EP0246255B2 - Thermobimetallschalter - Google Patents

Thermobimetallschalter Download PDF

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Publication number
EP0246255B2
EP0246255B2 EP86906334A EP86906334A EP0246255B2 EP 0246255 B2 EP0246255 B2 EP 0246255B2 EP 86906334 A EP86906334 A EP 86906334A EP 86906334 A EP86906334 A EP 86906334A EP 0246255 B2 EP0246255 B2 EP 0246255B2
Authority
EP
European Patent Office
Prior art keywords
carrier
bimetal
contact spring
hole
thermoswitch according
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
EP86906334A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0246255A1 (de
EP0246255B1 (de
Inventor
Manfred K. MÜLLER
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.)
Limitor AG
Original Assignee
Limitor AG
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
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Application filed by Limitor AG filed Critical Limitor AG
Publication of EP0246255A1 publication Critical patent/EP0246255A1/de
Application granted granted Critical
Publication of EP0246255B1 publication Critical patent/EP0246255B1/de
Publication of EP0246255B2 publication Critical patent/EP0246255B2/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
    • H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
    • H01H37/54—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/002—Thermally-actuated switches combined with protective means
    • 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
    • H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
    • H01H37/54—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting
    • H01H37/5427—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting encapsulated in sealed miniaturised housing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H61/00—Electrothermal relays
    • H01H61/01—Details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/10—Adaptation for built-in fuses
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/0241—Structural association of a fuse and another component or apparatus
    • H01H2085/0258—Structural association of a fuse or a fuse holder with a bimetallic element

Definitions

  • the invention is based on a bimetal temperature switch with those in the preamble of the claim 1 specified characteristics.
  • Such a switch is in DE-29 16 516 A1 described. It is a temperature switch, which on a circuit board as Carrier is arranged. You can do this on the circuit board one or more heating resistors are provided with the help of the thermal switch too can work as a relay or timing relay.
  • the known Switch has the disadvantage that the circuit board tends to result from thermal stress to warp, creating a flawless Function of the thermal switch not guaranteed is, in particular its switching temperature changed can be.
  • a switch with the features of the preamble of claim 1 is also out known from DE 32 31 136 A1.
  • the carrier an injection molded part made of plastic, in which the electrical connection parts are embedded are.
  • a thick film resistor is arranged on the underside of the carrier, which has the shape of a flat, coated ceramic plate. The thick film resistance bridges the switch electrically.
  • a relay in which on a Ceramic plate is a PTC thick film resistor as a heater.
  • a bimetallic contact spring which has one end on the Carrier is attached and carries a movable contact at its other end, who works with a fixed contact, who works with you Ceramic plate connected contact arm is located.
  • the thick film resistance is a component attached to the ceramic plate, which is connected to a control current source is to be connected in order to heat the bimetal contact spring Switch relay.
  • the contact bridge is located at one end of an arm; this is with attached to the other end of the substrate, but it’s not a contact spring, but a solid strip of electrical insulating material on the top there is a resistance element, which for Actuation of the switching bridge is supplied with a control current becomes.
  • DE-A-1 465 674 already discloses one Thermobimetal switch with a ceramic one Carrier, which is a Molding with several recesses and holes acts to accommodate screws for fastening a complex adjustment mechanism for the sound temperature.
  • US-A-2,860,208 discloses a bimetallic switch, in which the switch contacts on Edge of a bimetallic snap disc attached which is attached to a screw base, which like the fixed contacts on one Carriers are attached by means of set screws that allow adjustment.
  • the carrier can out malleable plastic or bahelite or one Ceramics not specified.
  • the invention has for its object a To create bimetal temperature switch, which one can be manufactured in a very flat design, too at different temperatures remains dimensionally stable, maintains its switching temperature and is versatile and adaptable.
  • the new thermal bimetal switch is used a thin aluminum oxide ceramic plate as a support, which is also referred to as a wafer in semiconductor technology becomes.
  • alumina ceramic plates with exceptional breaking strength is state of the art. Despite their merits, they are described below however, so far as a carrier for bimetal circuit breakers not been used.
  • aluminum oxide ceramic plates used for the bimetallic switches be much thinner than the previously common for small, open thermal switches used molded plastic carrier, thinner than printed circuit boards. It follows that the carrier used according to the invention only one has relatively low heat capacity, what favorably on the response speed of the Switch affects.
  • the carrier used according to the invention only one has relatively low heat capacity, what favorably on the response speed of the Switch affects.
  • an alumina ceramic carrier also and especially in the form of a thin plate highly heat resistant: it can up to significantly higher temperatures are used as a plastic carrier or printed circuit board and warps not yourself. It is also advantageous over Low thermal expansion coefficient plastics.
  • An aluminum oxide ceramic plate can also be used more true to size from the start manufacture as a plastic injection molded part, so that at the manufacture of a bimetal switch with an aluminum oxide ceramic plate as a carrier fewer tolerance problems occur.
  • An aluminum oxide ceramic plate can also be used not just like a circuit board with conductor tracks provided and with electrical components populate, rather resistances and other active or passive circuit elements to complete circuits in the carrier plate integrate, making the switch one compact, inexpensive hybrid component becomes.
  • a particularly simple but practical one Application significant training of the invention Switch is characterized by that the alumina ceramic support on on one side the generic elements of the bimetallic switch while it is on its opposite side (the bottom) provided with a resistance layer and thereby is designed as a thick-film resistor. Is arranged the resistance layer so that it bridges the switch electrically, then one such switch used as an overtemperature switch become after passing a predetermined temperature does not automatically closes, but remains open because after opening the switch the current is only over the Resistance layer flows, which heats up and generates so much heat and on the bimetal element transmits this above his Switching temperature remains. In his invention Training such a switch is essential more compact and cheaper than that in DE-PS 32 31 136 described switch, which after the Exceeding its switching temperature also open remains.
  • two sheet resistors may be provided, one of which one bridges the switch electrically and one is arranged as a series resistor, which accordingly with one of the two switch contacts associated electrical connectors and on the other hand with a third electrical connection part connected is; in the invention
  • a switch stands out compared to a comparable switch as in the DE-GM 84 11 838 is described by a more compact and cheaper construction.
  • the carrier plate of course, more than two film resistors be formed.
  • the Alumina ceramic plate in a fuse wire Series connection with the switching contacts arranged his offers an additional one Security in the event that the switch contacts not separated despite the switching temperature being exceeded e.g. because they stick; in such a In this case, the fuse wire heats up to over its melting temperature and interrupts the Circuit.
  • An aluminum oxide ceramic plate is suitable also excellent for equipping them with sensors, that generate an electrical output signal. With the output signal of such a sensor can be provided on the carrier plate Control the heating resistor, which is the bimetal element heated and thereby the switch operated.
  • the necessary electrical connection parts of the This could turn the bimetallic switch on attach the carrier to that one in the carrier Holes drilled e.g. by means of a laser beam, and the connecting parts to the holes drilled in this way screwed or riveted to the carrier. More advantageous it is, however, to metallize the support in places, preferably at its bottom, and the To form connecting parts fork-shaped, so that you put them on the carrier with your fork can, in separate metallized areas, after which they are soldered to the carrier.
  • the soldering can be done in electronics manufacturing common, inexpensive, automatic procedures take place, e.g. by guiding the carrier plates over a wave pool.
  • alumina ceramic plate metallizing leads to another Advantage of the invention: You can namely Fixed contact through selective metallization of the Form the top of the carrier, in particular by a Printing process.
  • connection parts at the same time can be used as a carrier for the permanent contact of the Switch or as a carrier for one, on the carrier Use the end of the contact spring to be determined.
  • the connection between the fixed contact and the one connector and between the contact spring and the other connector can be in the usual Way done by spot welding, being the welding process because of the temperature resistance the alumina ceramic attaching the electrical connectors the carrier plate can be done.
  • the connecting parts to attach to the carrier consists in the Use of the re-flow process. To do this the intended attachment points on the Carrier printed a solder metal, on which the Connection parts that work best for this purpose are forked, clamped and then soldered in a soldering oven.
  • Another advantage of the invention is that it is possible in the manufacture of bimetallic switches of larger alumina ceramic plates going out on these plates side by side a whole number of thermal bimetal switches train and only in one last Manufacturing step the panels along predetermined Separation lines between the bimetallic switches to separate.
  • bimetallic snap disc For the actuation of the contact spring is a separate bimetal element provided namely a bimetallic snap disc, which best arranged between the contact spring and the carrier becomes.
  • a snap disk is one through Emboss domed disc, which due to its Curvature two oppositely arched, stable Shaping can take the transition between the two figures.
  • For holding and centering the bimetallic snap disc you could be on or under the contact spring Provide hooks and tabs that hold the bimetallic snap disc hold on the edge and at least partially embrace.
  • a plastic bolt in front of the Play through a hole in the bimetallic snap disk is passed through and either on the contact spring is attached and with play through a hole protrudes through the carrier or attached to the carrier and with play through a hole in the contact spring protrudes, expediently this Bolt between the contact spring and the bimetallic snap disc has a collar through which the two are kept apart.
  • you can use a contact spring Provide extension e.g. through a deep drawing process, which through a hole in the bimetallic snap disc and through a hole in the carrier with Reaches through.
  • the bimetallic snap disc and the contact spring keeping your distance is important if should be prevented that the heat of electricity the contact spring on the bimetallic snap disc transmits. It is advisable to do this between the Contact spring and the bimetallic snap disc to provide insulating plastic part, which either in a hole in the bimetallic disc or in a Hole in the contact spring inserted, if necessary with both connected is. To the heat transfer between the contact spring and the bimetallic snap disc to prevent as much as possible, one forms this plastic part - and corresponding to the collar the bolt described above - as large as possible out so he's the bimetallic snap disc can thermally isolate from the contact spring.
  • the contact spring and the bimetal element can arranged on the same side of the carrier his. However, for many applications it is cheaper the contact spring on one side and that Bimetal element on the opposite side to arrange the carrier because then the bimetal element before being influenced by thermal the current-carrying contact spring through the one in between lying carrier is protected.
  • the necessary Active connection between the bimetal element and the contact spring is expedient in this case made by an actuator, which is in a hole of the carrier between the bimetal element and the contact spring is arranged.
  • the actuator act as a plunger in a bore formed opening of the carrier axially, i.e. in Longitudinal direction of the plunger is movable, guided.
  • This pestle could prevent it from being lost secure, be attached to the bimetallic element.
  • Cheaper is to attach it to the contact spring, the switching behavior of the bimetallic element to influence as little as possible.
  • the plunger neither on the contact spring nor to attach to the bimetallic element, but him loosely between them in a hole in the carrier to arrange; the loose arrangement of the Heat transfer from the contact spring to the bimetal element over the plunger to a minimum reduced.
  • One embodiment is particularly advantageous the bimetallic switch according to the invention, in which that between the bimetallic element one side and the contact spring on the other Side enclosed, in a hole of the carrier arranged actuator a ball which is preferably made of glass or from a ceramic material.
  • a bullet not only has the advantage of being a particularly bad one Thermal bridge between the contact spring and the Being a bimetal element, it is also extraordinary easy to assemble.
  • Screen the Balls can be made easily and inexpensively make sure that those used Balls only slightly in diameter distinguish that these diameter tolerances not to noticeable scatter of the Lead switching temperature. Too little scatter the switching temperature also bears the used one Alumina ceramic support at because this can be manufactured very dimensionally and even after prolonged use and more often Temperature change does not warp, but keeps its shape stable.
  • the bimetallic element could be a soldered on one side to the underside of the carrier Be bimetallic spring, but it is more advantageous instead using a bimetallic snap disc that of brackets, which attached to the carrier and encompass the edge of the bimetal element and / or a stop for the edge of the Form bimetal elements, loose - but captive - is held on the carrier.
  • holders for the Bimetal snap disks are suitable e.g. on the Top of the carrier brackets attached by soldering, which folded over to the underside of the carrier and there are similar to photo corners Hold the bimetal disc.
  • At least one of the brackets is expediently an integral part one of the two electrical connection parts of the switch and therefore does not have to be separate to be assembled.
  • bracket which an integral part of one of the two electrical Connection parts is, as a further bracket those with a peg with which they are captive inserted into a bore of the carrier, in particular is snapped into place.
  • This second bracket can be an injection molded part made of plastic act.
  • Bimetallic disc only through such in the Carrier inserted, especially latched Hold brackets.
  • the brackets must be the Bimetallic disc against all directions Secure sliding out. You can do that with just two Brackets if you have the respective bimetallic element on one edge with two opposite one another Provides recesses, in each of which engages a nose of the brackets. Vice versa you could of course also use the bimetal element on opposite edges with each provided a nose and this in recesses of the two opposite brackets intervene. The previously mentioned possibility is cheaper, however.
  • Another advantage of using a carrier from a thin aluminum oxide ceramic plate is that you can both without difficulty electrical connections of the switch to and can arrange the same end of the carrier; to one leads from the fixed contact one on the carrier printed conductor to that end of the carrier, on which the connector for the contact spring is located.
  • the switch shown in Figs. 1 to 3 consists of a thin, rectangular support 1 made of an aluminum oxide ceramic, which in the Has a slot 2 in the middle.
  • the elongated support 1 is metallized at both ends on the underside 1a and there are therefore two connecting flags 3 and 4 attached, which at one end each have a solder eye 5 and on their other End are fork-shaped. That of the metallized Underside 1a of the carrier tines 6 of the fork are with the carrier 1 in the immersion bath soldered. The top of the carrier 1 overlying tines 7 of the fork are with the Carrier 1 not soldered.
  • a contact spring 8 On the one terminal lug 3 is by spot welding one end of a contact spring 8 is welded on, which is a contact piece at its free end 9 wears. This moving contact piece 9 is opposite to the other terminal lug 4 a fixed contact 10 is welded on.
  • the contact spring 8 has a hole 11 approximately in the middle which captive a bolt 12 made of plastic is held.
  • the bolt 12 lies with a head 13 on the top of the contact spring 8 and extends through the contact spring below.
  • His shaft is by a central one Hole 14 in the middle of a bimetallic snap disc 15, which between the carrier 1 and the contact spring 8 is arranged, and through the slot 2 of the carrier 1 passed. Between the Contact spring 8 and the bimetallic snap disc 15 is the bolt 12 with an extended collar 16 provided, which on the one hand for a certain Distance and on the other hand for thermal shielding between the contact spring 8 and the Bimetallic snap disk 15 ensures.
  • a sheet resistor 17 which by conductor tracks 18 with the two connecting lugs 3 and 4 is connected and thus the switch electrically bridged. Speaks the bimetal snap disc 15 due to the occurrence of a temperature, which is above its switching temperature, then lifts the contact spring 8 and current only flows via the sheet resistor 17, which heats up as a result the bimetallic snap disc 15 heated and prevents them from their starting position jumps back in which the switch would close.
  • the bimetallic snap disc 15 By the current heat, which is in the contact spring 8 is generated, the bimetallic snap disc 15 hardly influenced. For that takes care of Shielding by the collar 16, but on the other hand also the contact of the bimetallic snap disc 15 with the carrier 1, causing a heat drain from the bimetallic element to the carrier 1 can.
  • thermobimetal switch shown in FIGS. 4 and 5 differs from that in the 1 to 3 shown mainly in that the Bimetal snap disk 15 is not on the top of the carrier 1 between the carrier and the contact spring 8 is arranged, but at the bottom of the carrier 1 loosely through a holder 20 is held, which is an integral part of one Terminal lug 3 is on which also the contact spring 8 is attached.
  • This terminal lug 3 is similar like the terminal lug shown in Fig. 1 fork-shaped.
  • the immovable end the contact spring 8 is under the upper prong 7 the fork of the connecting lug 3, and both are soldered to the carrier 1.
  • the lower tine 6 of the Fork 3 is beyond the center of the carrier 1 extended and formed into a structure 20 which is like a pan, in the bottom of which one large, almost from edge to edge Recess 21 is provided. On their edges are four upright, against the bottom 1a of the wearer, towards the four edges of the Beam 1 parallel side walls 22, 23, 24 and 25 provided, of which the two face the narrow sides of the carrier 1 parallel walls 24 and 25 touch the underside 1a of the carrier.
  • the structure 20 serves as a holder for the bimetallic snap disk 15, which is inserted before the terminal lug 3 is attached to the carrier 1.
  • By the large recess 21 ensures that the bimetallic snap disk 15 unhindered Can reach ambient temperature.
  • the shaft length of the plunger 27 is dimensioned that when the temperature of the bimetallic snap disc below their switching temperature lies and the bimetallic snap disc down is curved, as shown in Fig. 4 in solid Lines shows the plunger 27 not quite up to Bimetallic snap disk reaches down. However, exceeds the temperature of the bimetallic snap disc their switching temperature, then their curvature reverses um, as shown in dashed lines in Fig. 4, and thereby it raises the plunger 27 and this the Contact spring 8, so that at the top provided contact piece 9 from the fixed contact 10 is lifted off.
  • the bimetallic switch shown in Figs. 6 and 7 differs from that in the 4 and 5 switch shown substantially in the formation of the connecting flags and the Bracket for the bimetallic snap disc.
  • the two Terminal lugs 3 and 4 are not fork-shaped trained, but to attach to the Carrier 1 has certain ends to form an approximate C-shaped structure on one side twice angled. With this roughly C-shaped Formations encompass the connecting lugs 3 and 4 Carrier 1 from the side and are with it soldered.
  • the bracket for the bimetallic snap disc 15 is only partially through the connecting lug 3rd formed, and that is with a step-shaped angled extension 32 provided; opposite this there is a second one in carrier 1 through hole 33, into which from above forth a holding part 34 is inserted; It is about a pin with one on the top of the support 1 lying flat head 35 and a shaft 36 which is underneath the carrier 1 has a flat recess 37 which the extension 32 facing the connecting lug 3.
  • the Bimetallic snap disk 15 lies with one End in between the bottom 1a of the carrier and the extension 32 formed gap and with its opposite end in the recess 37 of the pin 34.
  • a recess 38 is provided at one end, in which the pin 34 engages so that the bimetallic snap disc not to the side of the recess 37 can swing out.
  • the edge of the bimetallic snap disc is a Swing out of the area of the extension 32 thereby prevents the bimetallic snap disc there one to the narrow side of the carrier 1 has parallel edge 39, which is almost over extends the entire width of the carrier 1 and in short distance in front of the perpendicular to the carrier 1 angled wall 32a of the extension 32 extends.
  • the bracket 34 designed as a pin allows easy assembly of the bimetallic snap disc 15.
  • the pin can simply be in its hole 33 are inserted and is in it by the contact spring 8 leading over it cannot be lost held. However, it is preferable to ensure that he's stuck in his hole 33, for example by having its diameter closely matches the diameter of the hole.
  • the bimetallic switch shown in FIGS. 8 and 9 differs from that in the 4 and 5 switch shown substantially through the other formation of the connecting lugs and the bracket of the bimetallic snap disc.
  • the two lugs 3 and 4 are essentially trained the same way, essentially as the terminal lug 4 in Fig. 4 and 5. None the two connecting lugs 3 and 4 are used for mounting the bimetallic snap disc 15 rather two separate brackets 40 are provided, which is cone-shaped in a similar manner are like the bracket 34 in Fig. 6.
  • the both brackets 40 have a flat head 45, which rests on the top of the carrier 1, a shaft 46, with which they pass through extend their respective hole 43 in the carrier 1, a collar 44 which is the bottom 1a of the carrier rests, and a wedge-shaped recess 47 in the shaft 46 below the collar 44.
  • the brackets 40 can be Injection molded plastic parts act first made without the head 45, from bottom to inserted into the respective hole 43 for the collar 44 and then by thermoplastic forming their upward ending into one Head 45 captively fastened in the carrier 1 become.
  • the two brackets are arranged so that the two wedge-shaped recesses 47 opposite each other for the same height of the two opposite each other Edges 49 of the bimetallic snap disk 15, which both with a recess 48 - accordingly the recess 38 in Fig. 7 - are provided in which engage and prevent the brackets 40 that the bimetallic snap disk 15 is lost goes.
  • Switch has the one shown in Fig. 8 Switch between the bimetallic snap disc 15 and the contact spring 8 a plunger 27, the above his head 28 has a cylindrical extension 41 has some play through a hole in the Contact spring 8 passes through and thereby to a leads to improved centering.
  • thermobimetal switch shown in FIGS. 10 and 11 has a connecting lug 4, which in essentially looks like the connecting lug 4 1 to 3, and has a connecting lug 3, which looks essentially like that in the Fig. 1 to 3, but also one for the support of Bimetal snap disk 15 serving extension 32 has as in Fig. 6 terminal lug 3.
  • Switch has the switch shown in Fig. 10 another pin-shaped bracket 54, which with a slit near his an end undercut shaft 56 snapped into a through hole 33 of the carrier 1 is.
  • the bracket 54 is from below here up to a collar 55 inserted into the hole 33.
  • a flat head connects to the collar 55 57 at.
  • the bimetallic snap disk 15 is in the area of action the bracket 54 with a recess 38 as in the example of FIGS. 6 and 7 provided, in which the bracket 54 with the Collar 55 engages.
  • bracket 54 in Fig. 10 and instead the bracket 34 in Fig. 6 and instead of Mounts 40 in Fig. 8 could also be mounts use as shown in Figs. 12 and 13 are.
  • These brackets differ of the holder shown in Fig. 6 therein, that in the recess 37 a semicircular, the Bimetallic snap disk 15 facing and in their Recess 38 engaging projection provided is.

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Thermally Actuated Switches (AREA)
  • Contacts (AREA)
EP86906334A 1985-11-07 1986-11-07 Thermobimetallschalter Expired - Lifetime EP0246255B2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19853539425 DE3539425A1 (de) 1985-11-07 1985-11-07 Thermobimetallschalter
DE3539425 1985-11-07
PCT/EP1986/000642 WO1987003137A2 (en) 1985-11-07 1986-11-07 Thermostatic bimetal switch

Publications (3)

Publication Number Publication Date
EP0246255A1 EP0246255A1 (de) 1987-11-25
EP0246255B1 EP0246255B1 (de) 1994-06-08
EP0246255B2 true EP0246255B2 (de) 2001-08-22

Family

ID=6285332

Family Applications (2)

Application Number Title Priority Date Filing Date
EP86906334A Expired - Lifetime EP0246255B2 (de) 1985-11-07 1986-11-07 Thermobimetallschalter
EP86201993A Pending EP0224950A3 (de) 1985-11-07 1986-11-07 Thermobimetallschalter

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP86201993A Pending EP0224950A3 (de) 1985-11-07 1986-11-07 Thermobimetallschalter

Country Status (6)

Country Link
US (1) US4847587A (enrdf_load_stackoverflow)
EP (2) EP0246255B2 (enrdf_load_stackoverflow)
JP (1) JPS63501833A (enrdf_load_stackoverflow)
DE (3) DE3539425A1 (enrdf_load_stackoverflow)
ES (1) ES2059310T5 (enrdf_load_stackoverflow)
WO (1) WO1987003137A2 (enrdf_load_stackoverflow)

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DE3843950C1 (en) * 1988-12-24 1990-03-29 Inter Control Hermann Koehler Elektrik Gmbh & Co Kg, 8500 Nuernberg, De Thermally controllable switching device
DE9101925U1 (de) 1991-02-19 1991-09-19 Limitor GmbH, 7530 Pforzheim Elektrischer Thermobimetallschalter und Halbzeug zu seiner Herstellung
DE4108725A1 (de) * 1991-03-18 1992-09-24 Inter Control Koehler Hermann Thermische schalteinheit fuer elektrische waermegeraete
JP2585148B2 (ja) * 1991-04-05 1997-02-26 ウチヤ・サーモスタット株式会社 フィルム状発熱体内蔵型サーモスタット
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Also Published As

Publication number Publication date
EP0224950A2 (de) 1987-06-10
US4847587A (en) 1989-07-11
WO1987003137A3 (fr) 1987-08-13
JPH0426171B2 (enrdf_load_stackoverflow) 1992-05-06
ES2059310T5 (es) 2002-01-16
DE3539425C2 (enrdf_load_stackoverflow) 1989-06-22
EP0224950A3 (de) 1987-11-25
ES2059310T3 (es) 1994-11-16
EP0246255A1 (de) 1987-11-25
JPS63501833A (ja) 1988-07-21
DE3689906D1 (de) 1994-07-14
DE8690150U1 (de) 1987-11-19
EP0246255B1 (de) 1994-06-08
DE3539425A1 (de) 1987-05-14
WO1987003137A2 (en) 1987-05-21

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