EP0858089A2 - Dispositif de commutation - Google Patents

Dispositif de commutation Download PDF

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Publication number
EP0858089A2
EP0858089A2 EP98101790A EP98101790A EP0858089A2 EP 0858089 A2 EP0858089 A2 EP 0858089A2 EP 98101790 A EP98101790 A EP 98101790A EP 98101790 A EP98101790 A EP 98101790A EP 0858089 A2 EP0858089 A2 EP 0858089A2
Authority
EP
European Patent Office
Prior art keywords
switching device
spring element
spiral spring
carrier part
side sections
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Withdrawn
Application number
EP98101790A
Other languages
German (de)
English (en)
Other versions
EP0858089A3 (fr
Inventor
Sigurd Möller
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.)
Emerson Electric GmbH and Co OHG
Emerson Electric GmbH
Original Assignee
Emerson Electric GmbH and Co OHG
Emerson Electric 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 Emerson Electric GmbH and Co OHG, Emerson Electric GmbH filed Critical Emerson Electric GmbH and Co OHG
Publication of EP0858089A2 publication Critical patent/EP0858089A2/fr
Publication of EP0858089A3 publication Critical patent/EP0858089A3/fr
Withdrawn legal-status Critical Current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
    • H01H37/04—Bases; Housings; Mountings
    • 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

Definitions

  • the invention relates to a switching device, in particular for household appliances, with the features of the generic term of claim 1.
  • Switching devices e.g. temperature controllers (thermostats), used, which function relatively precisely over a long period of time have to. This also under comparatively rough Operating conditions, such as strong temperature fluctuations or high humidity. Also subject to such switchgear occasionally during operation strong vibrations. Nevertheless, this should result in switching points do not move and it is supposed to function safely be ensured.
  • thermostats temperature controllers
  • Switchgear of the type mentioned are very high Number of pieces required, being as inexpensive as possible Manufacturing is sought. Even small savings add up to considerable in the current series Amounts.
  • a switching device is known from EP 0 446 590 A1, which is designed as a temperature controller.
  • the switching device has a support part designed as a bent sheet metal part on which an insulator with a changeover contact is held. Serves to actuate the changeover contact a spiral spring element, which is also on the carrier part is held.
  • the spiral spring element is from a pressure can deflected, with one side on the spiral spring element and with their opposite side an end face of an adjusting spindle supports.
  • the pressure cell is connected via a capillary tube connected to a temperature sensor.
  • the Carrier part For holding the spiral spring element, the Carrier part two aligned parallel to each other at a distance Side walls on which strip-shaped sections are exempt. This with both ends with the strip-shaped sections connected to the other side wall are bent so that they are parallel at a distance to each other away from the central part of the carrier part extend.
  • Two adjacent strip-shaped sections a side wall define an insertion slot between them to accommodate a substantially plate-shaped Fastening end of the spiral spring element.
  • On the attachment end of the spiral spring element are lateral Lugs formed in the from the mounting end defined level.
  • the locked Condition i.e. if the spiral spring element between the Side walls of the support part is inserted, grasp the Lugs under the respective upper boundary edge each insertion slot.
  • the Side walls of the carrier part an evasive or locking movement away from each other and towards each other.
  • the snap connection can be released by the Side walls of the support part bent away from each other will. Will the snap connection between the spiral spring element and the support part is released, the switching device no longer works properly.
  • the spiral spring element secured to the carrier part by a locking means, whose locking elements essentially parallel to the side portions of the support member are moved. So that the locking elements are essentially transverse to the defined by the fastening end of the spiral spring element Level moves.
  • the snap connection does not come loose, when the side sections of the support part towards each other or bent away from each other.
  • the switching device is therefore relatively robust and less susceptible to vibrations.
  • the spiral spring element thus also serves as Spring means for flexible storage of the locking elements.
  • the high rigidity of the side sections against loads in the parallel direction results in a rigid mounting of the Counter elements that serve as abutments for the locking elements to serve.
  • the forces acting on the counter elements are recorded in a triangle by the respective counter element and the bend line is defined at which the Side section borders the middle section.
  • the locking elements with the relatively large force of the spiral spring element pressed into the counter elements and lie there under tension. This results in precise storage and clamping of the spiral spring element, which is a high Accuracy and a long-term stable setting of the Switching points of the switching device enables.
  • the assembly of the switching device especially the Assembly of the spiral spring element is simple and inexpensive.
  • the spiral spring element is only attached to the Carrier part brought up and inserted into corresponding receptacles, that the locking elements snap into the counter elements.
  • the seat of the spiral spring element are of an exact Adjustment of the side sections of the support part independently. There is essentially no play in this context Roll what angle the side sections with the middle section enclose the support part. Deviations of a few degrees are tolerable without the alignment to impair the spiral spring element.
  • While the locking means essentially the longitudinal position the fastening end of the spiral spring element and thus its sanding from the middle section of the Carrier part determined, serve on the side sections arranged holding means to the camp reaction forces of the spiral spring element.
  • the holding means thus form abutments separate from the locking means the fastening end of the spiral spring element.
  • the force attack or introduction points lie in a triangle, the through the lower edge of the fastening end of the spiral spring, through the locking lugs of the spiral spring or an adjacent one Contact area and by a pressure element defined at the free end of the spiral spring element is. Due to the extensive functional separation of Locking and holding means is achieved that the to be picked up Bearing reaction forces not the snap connection can affect.
  • Holding means abutment for only a given one Has direction of loading of the spiral spring element. This is sufficient if the spiral spring element is under constant prestressing in one direction of loading.
  • a particularly simple assembly results if the mutually facing sections of the side walls limit each insertion channel for the spiral spring element. These can, for example, by bent ends of the side wall sections be formed.
  • Advantageously has the fastening portion of the spiral spring element right or obtuse at both sides angled areas on the mounting section stiffen and, for example, into the insertion channels of the side walls are to be introduced. So that is the spiral spring element rigid in the area of the locking and holding means, which results in a precise clamping.
  • the abutment formed on the side sections is associated with a spaced abutment that for example on the central section or on one with the carrier part connected base plate is formed.
  • the Base plate is preferably an insulating plate that the switching device, for example electrical contacts.
  • the insulating plate is preferred during assembly permanently connected to the carrier part. For connection can be used with an internally threaded socket is used as a hollow rivet.
  • Threaded bushing is preferably rotationally symmetrical educated. She sits in a corresponding one Opening the base plate and reaches through the support part. The threaded bush is against rotation if it is riveted to the base plate and the support part, secured frictionally. This enables a special easy assembly, in which the threaded bushing without consideration to their rotational position in the corresponding opening can be used.
  • the spindle is preferably with a through hole provided, in the an adjustment pin in the press fit sits. To set defined switching points this axially shifted. To make this easier, the corresponding mounting hole of the threaded spindle with Provided with internal thread. In this is the pen whose Outside diameter exceeds the core diameter of the thread, indented.
  • Contact elements belonging to the switching device are preferably riveted to the base plate, wherein the corresponding rivets in graded holes that their heads cannot sit from the outside without tools are accessible. This provides the necessary protection against accidental contact for sure.
  • the fastening end of the spiral spring element serves preferably as a strain relief for one to one Temperature leading capillary tube, which with the Pressure cell is connected.
  • the capillary tube is U-shaped around the fastening end of the spiral spring element bent. If necessary, the base plate and / or that Bending spring element with a corresponding recess for Implementation of the capillary tube should be provided.
  • the stop element preferably has an inside knurled thread on the external thread of the Threaded spindle is pressed on, which creates many intersection points form and an easy to manufacture, permanent, non-rotatable connection is ensured.
  • a Spring-loaded locking element can when turning the threaded spindle provide a braking effect for the spindle and at the same time define a tangible preferred position that For example, a selected temperature or another preferred setting value is assigned.
  • Fig. 1 is a switching device 1 with the closed Housing 2 illustrates that as a temperature controller is trained.
  • the switching device 1 has a temperature sensor 3, from which a capillary tube 4 into the interior of the housing 2 to, for example, from FIG. 2 or 4 visible pressure can 5 leads.
  • the pressure cell 5 is with held on one side on a spiral spring element 6 and supports itself with its opposite side of the membrane an adjusting spindle 7.
  • the spiral spring element 6 transfers the movements of the pressure cell 5 to a movable one Contact 8 of a switch arrangement 9.
  • the spiral spring element 6 is from a carrier part 11 held, which can be seen, for example, from FIG. 2.
  • the Carrier part 11 is a bent sheet metal part with a flat, rectangular middle section 12.
  • the middle section 12 adjoins this towering, opposite side sections 13, 14, which are essentially parallel to one another are arranged.
  • At their respective, from the middle section 12 adjacent edge 16 are adjacent to the Side sections 13, 14 strip-shaped sections 17, 18 exempted as recesses for one Serve cover 19. This points accordingly Locking lugs 20, whose inwardly projecting locking projections reach behind sections 17, 18 in the assembled state.
  • the spiral spring element 6 For holding and fixing the spiral spring element 6 is the side portion 13 on its edge 16 the middle section 12 running edge bent like a hook, whereby an opening into the interior of the housing Channel or pocket is designed as a guide channel 22 serves.
  • the bent edge forms an oblique in the tab 21 extending near the interior upper edge 16 is on the bent narrow side of the Side portion 13 a locking opening 23 is formed.
  • the side wall 14 is in her bent area broken through a latching opening 25, the same with respect to the central section 12 Height is like the locking opening 23.
  • the formation of the Guide channel 24 and the locking opening 25 is in detail 3 can be seen.
  • the side wall section 14 is bent here so far with a narrow bending radius that the guide channel 24 has a V-shaped cross section.
  • the latch opening 25 is essentially rectangular and breaks through the bottom of the channel-shaped guide channel.
  • the inwardly curved edges of the tabs 21, 21 ' the side sections 13, 14 have approximately the height of Locking openings 23, 25 in the inwardly projecting, free Ends of guide surfaces 27, 28 for the spiral spring element 6 on.
  • the guide channels 22, 24 form abutments that the bearing reaction forces required for the spiral spring element 6 record, tape.
  • While the guide channels 22, 24 to the interior of the housing are open at one in the housing at the central portion 12 arranged insulating body 29 a flat end face 31 formed in the opposite direction points.
  • the guide channels 22, 24 and the end face 31 form a storage, i.e. a holding means for the in 3 illustrates spiral spring element 6.
  • This points an essentially plate-shaped fastening end 33 to which is angled by a little more than 90 ° Bending spring section 34 which connects into one lever arm 35 tapering in a trapezoidal shape.
  • the fastening end 33 and the lever arm 35 are through angled edges 36, 37 stiffened.
  • the edges 36 close each with the fastening end 33 Angle of about 102 °. Adequate compliance of the spiral spring section 34 can be reached this provided with an opening 38 so that the stiff Fastening end 33 ultimately over two from each other spaced, flexible strips with the stiff lever arm 35 is connected.
  • edges 36 are each provided with a locking projection 39.
  • the locking projections are sawtooth-shaped in side view and point at it from the spiral spring section 34 on the opposite side.
  • the locking projections 39 delimited by an edge 41 which essentially at right angles to the fastening end 33 is aligned.
  • the edge 41 acts in the locked Position with the upper, from the middle section 12 distant boundary edge of the locking openings 23, 25 together and thus determines the distance of the spiral spring section 34 from the middle section 12. If necessary edge 41 can also be arranged inclined so that the locking element 39 in the manner of a barb in the Locking openings 23, 25 sits.
  • the spiral spring element takes over in addition to his Spring function the holder of the capillary tube 4. This leads, as can be seen from FIGS. 2, 4 and 5a, 5b, radially from a base element 42 of the pressure cell 5 and in a U-shaped arch 43 around the bottom boundary edge of the fastening end 33 out of the housing 2 out. If necessary, at the fastening end 33, 2, a recess 44 is provided be, from which a U-shaped leg 46 to kink-free contact of the capillary tube 4 extends away. If necessary, the leg 46 can be dispensed with, as illustrated in Fig. 5b.
  • the U-shaped curved capillary tube 4 extends from the central portion 12 of the Carrier part 11 between the bent edges of the Side sections 13, 14 up a tab 47, the if necessary, a deepening towards its free end Bulge or recess 48 for guiding the Capillary tube 4 may have.
  • the tab forms one Part of the wall of the housing 2.
  • the tab carries one Tongue for connecting a protective conductor.
  • the housing cover 19 assigned to the carrier part 11 has in the area of the tab 47 one of the circumferential Tongue 49 to be extended onto the tab 47 on the lower, in the assembled state to the Tab 47 abutting edge 51 has a notch 52 that the capillary tube 4 receives and in the bulge or Recess 48 holds.
  • the capillary tube 4 is thus fixed.
  • the fastening end 33 of the spiral spring element 6 acts thereby together with the housing 2 and the insulating body 29 as strain relief (Fig. 4).
  • the lever arm 35 of the spiral spring element 6 is on provide its free tapered end with an opening 54, in which a preferably ceramic plunger element 55 is held.
  • the plunger element 55 is essentially cylindrical and points at one another on its two flat sides identically designed, cylindrical lugs 56, 57 on. Due to the symmetrical design of the plunger element 55 can be installed in any orientation can be inserted into the opening 54, which the Assembly process simplified. It becomes 56 with its approach into the opening 54 between preferably three (for self-centering) resilient rag pressed in. An inclination the rag works together with its spring force as protection against pulling out the plunger element 55 from opening 54.
  • the plunger element 55 acts both in the embodiment 4 as well as in FIG. 7 a rib 58 of the contact 8, which in both embodiments is designed as a snap contact.
  • the Contact 8 a cut-out tongue 59 that fits in a notch of a contact tab 61 is supported on a Flat plug contact 62 is formed.
  • the flat plug contact 62 has another, to the contact tab 61st parallel contact tab on the opposite side with is provided with a notch.
  • the contact tab protrudes a slot formed in the contact around the contact 8 to store.
  • the contact 8 are two further flat plug contacts 63, 64 associated with the corresponding sections 65, 66 as stops for the free end 67 of the contact 8 Act. If pressure is not applied to rib 58, the contact 8 jumps to its upper position in which it the flat plug contact 62 with the flat plug contact 63 connects. The rib 58 will have a switching point Moved down, the contact 8 jumps over and connects the tab connector 62 to the tab connector 64. The switching points for switching back and forth are different from each other, so a certain Switching hysteresis is obtained.
  • the flat plug contacts 62, 63, 64 are with the preferably made of ceramic insulating material body 29 riveted.
  • the insulating body 29 is dimensioned thick, so that there is no risk of breakage.
  • the corresponding Rivets 71, 72 and others for contact 64 sit (covered by section 66) in stepped bores of the insulating body 29, the rivet heads on the ring shoulder formed in the stepped bore support. They are therefore and due to the thickness of the Insulated body 29 sunk so far that it from externally inaccessible in terms of electrical contact protection are. So that the insulating body can Form part of the housing 2 and it is not a separate one Coverage required.
  • the insulating body 29 has, as shown in FIGS. 2 and 7, a substantially flat, plate-shaped section 74, which in assembled Condition on the central section 12 of the carrier part 11 is present.
  • the section 74 is provided with an opening 75, those with a corresponding opening in the middle section 12 is aligned. Both are from a threaded bush 77 penetrated the inside of the housing has a covenant. This lies in a corresponding one Recess of section 74.
  • the threaded bushing 77 has a rivet edge 78 on its outer side, with which they the insulating body 29 on the support member 11th holds. At the same time, the threaded bushing 77 is non-rotatably as a result in opening 75.
  • the threaded bushing 77 has an internal thread provided opening in which a separately in Fig. 6th illustrated adjusting spindle 7 is screwed in at its outward-facing end 82 to the defined Recording an adjustment knob is flattened.
  • the adjusting spindle 7 has a concentric through hole 83 on whose end 84 in the housing 2 has an internal thread 84 'is provided.
  • An adjustment pin sits in the thread 85 in the press fit. This can be done with a corresponding Mandrel through the through hole 83 in the smallest steps (practically infinitely) from the Adjustment spindle 7 are pushed out, the Adjustment pin 85 in any intermediate position holds frictionally.
  • the adjustment pin 85 serves as in FIG. 4 illustrates, as an abutment for the pressure cell 5, the on the other hand on the lever arm 35 of the spiral spring element 6 supports.
  • a stop 91 On the threaded end of the adjusting spindle 7 sits a stop 91 rotatably, which is in a radial Has direction extending extension 92. Of the Stop 91 has a passage delimiting an opening 93 on the wall delimiting the opening is knurled. This results in the external thread Adjustment spindle 7 many intersection points, the non-rotatable Ensure that the stop 91 is seated.
  • the stop 91 is on the section 74 of the Assigned to the insulating body 29 arranged projection 94, which forms a stop for the extension 92 and a rotation of the adjusting spindle 7 only in a predetermined Allows angular range.
  • the width of the protrusion 94 and the extension 92 define the size of the angular range firmly.
  • the stop 91 also has a disk-shaped Flange 95 with a notch 96. Between the Flange 95 and the insulating body 29 sits on the Adjustment spindle 7 a flat spring 97, of the middle Washer-shaped section 98 in the radial direction extend two spring arms 99 away. These are for Protection against rotation on the insulating body 29 between Guide projections 101 and press the disc-shaped Section 98 upwards in contact with the stop 91 disc-shaped section 98 has an upward direction Nose 102, which is assigned to the notch 96 and in corresponding angular position engages in this. This results in a noticeable locking effect on the adjusting spindle 7.
  • the flat spring 97 causes a frictional connection Escapement of the adjusting spindle 7.
  • the locking point can be a selected temperature or another selected Setting value can be assigned.
  • the flat spring is on its section 98 with a burr-free thread, through which the adjusting spindle 7 extends. The passage allows the section to move axially 98 without this scraping on the adjusting spindle 7.
  • the spiral spring element 6 is like shown in Fig. 2 pre-assembled.
  • the siphon 5 and the plunger element 55 attached to the lever arm 35.
  • the capillary tube 4 is bent into a U-shape and around the fastening end 33 of the spiral spring element 6 is laid around.
  • the spiral spring element 6 is now with its edges 36 into the guide channels 22, 24 of the carrier part 11 introduced so that the spiral spring element 33 in the between the bent tabs 21, 21 'of the side sections 13, 14 and the end face 31 of the insulating body 29 formed slot slides and with the end face 31 comes into contact.
  • the Lever arm 35 via the plunger element 55 on the contact 8 from.
  • Further pressure on the spiral spring element 6 leaves the Locking projections 39 against the pressure of the spiral spring element 6 snap into the locking openings 23, 25.
  • the received Preloading the spiral spring element 6 causes that Fastening end 33 with its edges 36 in the guide channels 22, 24 and on the end face 31.
  • the position of the locking openings 23, 25 is determined relatively precisely.
  • the bias of the spiral spring element 6 causes that the edges 41 of the locking projections 39 to the corresponding Edges of the locking openings 23, 25 are pressed. It there is approximately a positive connection between the carrier part 11 and spiral spring element 6, which by the force of Beige spring element is constantly maintained. This Form locking also prevents the side sections 13, 14 can bend outwards.
  • the pulling forces in Direction of the side walls 23 are even relative thin sheet of the housing 2 added without deformation.
  • the position of the fastening element 6 relative to the housing 2, absolutely crucial for the constant switching function of the Switching device 1 is very well secured and can by external forces on the side sections 13, 14 of the Housing 2 can not be changed.
  • the switching point is adjusted using a Dorns through the through hole 83 of the adjusting spindle 7 out and for advancing the adjusting pin 85 is used.
  • the adjustment is made when a given the spindle position the switching point is reached, i.e. just switched the contact 8 brought about becomes.
  • a flat spring 97 ' is used, which embodiment without guide projections 101 on the insulating material body 29 gets along.
  • the flat spring 97 ' has a rectangular shape Base body with a central opening 103 in the two tongues 104, 105 to be pointed towards one another are free are. In use, these press against the flange 95 of the Stop 91 and cause a frictional inhibition of Spindle rotation.
  • the tongue 105 is at its free end provided with a nose 102 'that the notch 96 of the stop 91 is assigned and defines a rest point. If necessary, the opposite tongue 104 can also be used be provided with such a nose, for example two Define rest points.
  • Embodiment is the insulating body 29 such stepped that the outer tab contact 64 is held in a plane that is the height of the section 66 corresponds.
  • the middle contact is below that Contact 8.
  • the contact 64 can thereby be cranked, i.e. be perfectly flat, what its manufacture simplified.
  • this is a modified one Switching device 1 also with regard to the holder of the housing cover 19 simplified.
  • the exempt Strips 17, 18 have the side sections 13, 14 of the Carrier part 11 recesses in which extended Lugs 20 in corresponding recesses 110, 111 of the Grip insulating body 29.
  • the spiral spring element 6 preferably two at its substantially flat end at an obtuse angle edges 36 on which Locking projections 39 are formed.
  • the cross section U-shaped carrier part 11 points to its Side legs or sections 13, 14 bent Tabs 21, 21 'that are vertical to the central section Define 12 extending guide channels 22, 24.
  • the tabs 21, 21 ' can be continuous or interrupted be.
  • the guide channels 22, 24 serve together with an insulating body 29 as an abutment for the spiral spring element 6.
  • the locking projections 39 are locking openings 23, 25 in the region of the bottom of the guide channels 22, 24 assigned.

Landscapes

  • Push-Button Switches (AREA)
  • Thermally Actuated Switches (AREA)
EP98101790A 1997-02-07 1998-02-03 Dispositif de commutation Withdrawn EP0858089A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1997104575 DE19704575C1 (de) 1997-02-07 1997-02-07 Schaltgerät
DE19704575 1997-02-07

Publications (2)

Publication Number Publication Date
EP0858089A2 true EP0858089A2 (fr) 1998-08-12
EP0858089A3 EP0858089A3 (fr) 2001-01-03

Family

ID=7819540

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98101790A Withdrawn EP0858089A3 (fr) 1997-02-07 1998-02-03 Dispositif de commutation

Country Status (2)

Country Link
EP (1) EP0858089A3 (fr)
DE (1) DE19704575C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114300305A (zh) * 2021-04-13 2022-04-08 慈溪市凯达温控器有限公司 一种新型液胀式温控器及其保护装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29815495U1 (de) 1998-08-28 1998-11-05 Siemens AG, 80333 München Geräteabdeckung
DE10028076C1 (de) * 2000-06-07 2001-10-11 Siemens Ag Schaltstück für ein Schaltgerät
DE102020111516A1 (de) * 2020-04-28 2021-10-28 Stiebel Eltron Gmbh & Co. Kg Sicherheitsvorrichtung für elektrische Geräte

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2853583A (en) * 1957-01-09 1958-09-23 Westinghouse Electric Corp Controller
GB901881A (en) * 1958-05-02 1962-07-25 Eric Hardman Taylor Improvements in or relating to thermally controlled electric switches
US4274546A (en) * 1977-12-29 1981-06-23 Robertshaw Controls Company Condition responsive electrical switch construction and parts and methods therefor
DE2815987C2 (de) * 1978-04-13 1986-02-06 E.G.O. Elektro-Geräte AG, Zug Temperaturregler
DE3844472A1 (de) * 1988-12-31 1990-07-05 Ego Elektro Blanc & Fischer Schaltgeraet
DE4003745A1 (de) * 1990-02-08 1991-08-14 Ego Elektro Blanc & Fischer Schaltgeraet

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114300305A (zh) * 2021-04-13 2022-04-08 慈溪市凯达温控器有限公司 一种新型液胀式温控器及其保护装置
CN114300305B (zh) * 2021-04-13 2024-01-19 慈溪市凯达温控器有限公司 一种液胀式温控器

Also Published As

Publication number Publication date
EP0858089A3 (fr) 2001-01-03
DE19704575C1 (de) 1998-08-06

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