EP2743954B1 - Commutateur thermodépendant - Google Patents

Commutateur thermodépendant Download PDF

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Publication number
EP2743954B1
EP2743954B1 EP13191916.9A EP13191916A EP2743954B1 EP 2743954 B1 EP2743954 B1 EP 2743954B1 EP 13191916 A EP13191916 A EP 13191916A EP 2743954 B1 EP2743954 B1 EP 2743954B1
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EP
European Patent Office
Prior art keywords
switch
housing
temperature
shielding
dependent
Prior art date
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Application number
EP13191916.9A
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German (de)
English (en)
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EP2743954A1 (fr
Inventor
Marcel P. Hofsaess
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HOFSAESS, MARCEL P.
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Individual
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Priority to PL13191916T priority Critical patent/PL2743954T3/pl
Publication of EP2743954A1 publication Critical patent/EP2743954A1/fr
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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
    • 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
    • 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
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49105—Switch making

Definitions

  • the present invention relates to a temperature-dependent switch with a housing having a cover part and a lower part with a circumferential wall and a bottom, with a temperature-dependent switching mechanism disposed in the housing, which, depending on its temperature, an electrically conductive connection between two on the housing provided external connections or opens, and with a Abletopf of an electrically conductive, metallic material, in which the housing is inserted with its bottom first.
  • Such a switch is, for example, from the US 2003/034872 A1 known.
  • one serves from the DE 103 01 803 A1 known temperature-dependent switch in a conventional manner to monitor the temperature of a device. For this purpose, for example, it is brought into thermal contact with the device to be protected via one of its outer surfaces, so that the temperature of the device to be protected influences the temperature of the derailleur.
  • the switch is electrically connected via the soldered to its external terminals leads in series in the supply circuit of the device to be protected, so that below the response temperature of the switch, the supply current of the device to be protected flows through the switch.
  • the known switch has a deep-drawn lower part, in which an inner circumferential shoulder is provided, on which a lid part rests.
  • the lid part is held by a raised and flanged edge of the base firmly on this shoulder.
  • cover part and lower part are made of electrically conductive material, an insulating film is provided between them, which extends parallel to the cover part and is pulled up laterally, so that the flanged edge presses with the interposition of the insulating film on the cover part.
  • the temperature-dependent switching mechanism here comprises a spring snap-action disk, which carries the movable contact part, as well as a bimetallic disk which is put over the movable contact part.
  • the spring snap-action disk carries a so-called movable contact part, which presses the spring disk against a stationary contact part on the inside of the cover part.
  • the spring snap-action disk With its edge, the spring snap-action disk is supported in the lower part of the housing, so that the electric current flows from the lower part through the spring snap-action disk and the movable contact part into the stationary contact and from there into the cover part.
  • the first external connection is a contact surface, which is arranged centrally on the cover part.
  • This design is particularly chosen when very high currents must be switched, which can not be easily passed through the spring washer itself.
  • a bimetal disc is provided for the temperature-dependent switching function, which rests below its critical temperature without force in the switching mechanism, wherein it is arranged geometrically between the contact part or the contact bridge and the spring snap-action disc.
  • the bimetallic disc changes its configuration and presses with its edge against an abutment, which is usually provided on the cover part.
  • the bimetallic disc presses with its central region against the spring snap-action disc and thus lifts the movable contact part of the stationary contact or the current transfer member of the two stationary contacts, so that the switch opens and the device to be protected is turned off and not further can heat up.
  • the bimetallic disc is mounted mechanically free of forces below its transition temperature, the bimetallic disc is also used in any case to guide the flow.
  • bimetallic discs have a long mechanical life, and that the switching point, so the critical temperature of the bimetal disc, not changed even after many switching cycles.
  • the bimetallic disc can also take over the function of the spring snap-action, so that the switching mechanism comprises only a bimetallic disc, which then carries the movable contact part or the current transfer member and in the closed State of the switch also conducts the current.
  • the bimetallic disc can take over the function of the spring snap-action disc.
  • From the DE 195 17 310 A1 is one to the from the above-mentioned DE 103 01 803 A1 Comparable constructed temperature-dependent switch known in which the cover part, however, is made of a PTC thermistor and rests without interposition of an insulating film on an inner circumferential shoulder of the lower part to which it is pressed by the flanged edge of the lower part.
  • the first external connection is an external head of a rivet sitting centrally in the cover part, the inside head of which serves as a fixed mating contact.
  • As a second outer terminal also serves a provided on the flanged edge of the base contact surface.
  • the PTC thermistor cover is electrically connected in parallel to the two outer terminals, so that it gives the switch a self-holding function.
  • the cover part is also made of PTC thermistor, so that it also has a self-holding function.
  • the outer heads form the two outer terminals, and interact their inner heads as stationary contacts with the contact bridge.
  • the known switches are therefore often used in enclosing or protective caps that serve the mechanical and / or electrical protection and often the case should also protect against the entry of impurities. Examples of this can be found for example in the DE 91 02 841 U1 , the DE 92 14 543 U1 , the DE 37 33 693 A1 and the DE 197 54 158 ,
  • connection caps on the switches from above, ie from the connection side, in order to ensure a defined external connection and the sealing of the housing. Examples of this can be found for example in the DE 10 2005 001 371 B4 or the DE 10 2009 030 353 B3 ,
  • an insulating cap for a temperature-dependent switch is known, which is designed as a cup-like surrounding housing and is pushed from below onto the housing of the temperature-dependent switch so that lead up to the switch housing soldered leads up out of the cap. The opening of the cap is then closed by a cast resin cover.
  • the cap is made of plastic and serves for the electrical insulation of the switch, whose lower part consists of metal.
  • From the DE 10 2011 016 896 B3 is a temperature-dependent switch with a bimetallic disc, an insulator body and external connections and a housing known, in which the bimetallic disc and the insulator body are used.
  • the housing can be made of ferromagnetic steel to mechanically shield the derailleur.
  • the electromagnetic environment to which the switches are exposed during use appears to have changed in particular as a result of changed compositions of the leads, windings, winding plates, etc.
  • a planter is a metallic receptacle for the temperature dependent switch that includes an enclosed metallic housing.
  • the receptacle is formed on a fastening part, which is provided with an external thread.
  • the switch is inserted with the interposition of an insulating film with its bottom first in the recording.
  • a made of plastic intermediate part is inserted, which is permanently connected by a flanged edge of the receptacle with this.
  • On the intermediate part of a likewise existing plastic lid is snapped.
  • the present invention seeks to eliminate in the known switch in a structurally simple and inexpensive way, the above-mentioned problems, at least reduce.
  • the inventor has therefore just not gone the way to modify the housing itself or to insert the switch in a surrounding this from all sides shielding.
  • the inventor of the present application has recognized that the effect of electromagnetic fields is completely prevented or at least reduced by a shielding pot which is placed on the housing from below.
  • the shielding pot can be mechanically held on the housing, for example by crimping, clamping or crimping a raised edge of the Abletopfes on top of the switch inserted into the Abletopf.
  • the shielding pot can also be connected by suitable resins or silicone with the top of the switch.
  • a shielding pot is therefore understood to mean an upwardly open planter which, owing to the physical properties of the material from which it is made, ensures a shielding of the temperature-dependent switch contained therein against electromagnetic fields.
  • Suitable materials are in particular electrically conductive metals and metal alloys in question.
  • the insertion depth is preferably at least 10% greater than the height of the housing, it is also advantageous that the mechanical protection not only acts against loads from the side but also against forces from the top or bottom.
  • the supernatant of Abletopfes thus gives even better mechanical protection.
  • the shielding effect is also improved by this measure.
  • the shielding pot is made of steel.
  • hot-rolled or cold-rolled deep-drawing steels which are used without coating or with a surface finish are considered as steels.
  • the shielding pots are shaped in particular from thin sheets of the type DC.
  • the electrically conductive lower part of the housing existing temperature-dependent switch is usually made of brass, because brass is a material that can be processed well due to its mechanical properties. These parts are structurally demanding, they have shoulders, etc. and must be made very dimensionally stable, so that the switching function of the temperature-dependent derailleur is guaranteed.
  • temperature-dependent switches have very small dimensions, the lower parts of the housing, for example, have a diameter of 8 to 10 mm and a total height of 4 to 6 mm.
  • Such small parts can be made of steel, a material that gives a very good electromagnetic shielding effect, only with much greater effort and therefore significantly higher costs than brass.
  • a shielding pot made of steel is very simple in construction, it preferably consists of a circumferential wall which defines an insertion opening at the top and is closed at the bottom by a bottom. This simple structure can also be produced very inexpensively from steel.
  • the thicknesses of the circumferential wall and bottom can be kept very low, without the shielding effect deteriorates.
  • the thicknesses of wall and floor are in the range of 0.1 to 03 mm. Such thin walls and floors also ensure good thermal connection of the equipped with the shielding switch to the device to be protected.
  • the shielding pot made of steel not only protects the switch inside from electromagnetic fields, it also provides mechanical protection that the brass housing can not guarantee.
  • the advantages of the shielding steel, even with temperature-dependent switches are realized, whose housing is made of a different material than brass, for example, made of an insulating material or a metal sheet.
  • the pressure stability mediated by the shielding pot has a particularly advantageous effect.
  • An inventively equipped with a shield pot made of steel thus combines the advantages of the usual, inexpensive and dimensionally stable to manufacture housing and the steel housing, without causing the high cost associated with a steel housing.
  • the shielding pot has a peripheral wall which delimits an insertion opening at the top and is closed at the bottom by a bottom, wherein the peripheral wall is bent over with its upper edge to the top of the housing.
  • the housing is mechanically held by the bent edge in the shielding pot, wherein the edge additionally provides for a mechanical protection of the cover part, which is particularly advantageous if the cover part is made of insulating material or PTC thermistor.
  • the two outer terminals are provided with connecting leads leading out of the shielding pot at the top, contact angles being fastened with their short legs to the outer terminals, and the connecting leads being fastened to their long legs.
  • the long legs are bent over the short legs.
  • the connecting leads are still pointing vertically upwards, the upper edge of the peripheral wall of the shielding pot can be bent inwards in a simple manner in order to mechanically fix the housing. Only now are the long legs bent over the short legs, so that the leads lead away from the side of the switch, as it is required for most applications.
  • an electrical insulating material preferably a silicone adhesive, one-component thermoset or a resin, in particular a composition with an epoxy resin is applied to the top, wherein the Elektroisoliermaterial covers at least the two external connections and connects the shielding pot with the housing.
  • the shielding pot is not or not exclusively held purely mechanically, but also / only cohesively on the housing. It is set automatically, so to speak, during the curing of the electrical insulating material on the housing.
  • the Elektroisoliermaterial which is preferably a silicone adhesive, one-component thermosetting plastic or a cast resin such as epoxy resin, covers at least the outer terminals of the switch and the possibly still free stripped ends of the connecting cables.
  • the silicone adhesive or resin also provides strain relief for the leads soldered to the outer leads or the legs of the contact angles, although a silicone adhesive does not provide the degree of stability such as an epoxy resin. Nevertheless, the electrical insulation material ensures a further improved mechanical stability and pressure compatibility of the new switch as well as improved electrical and mechanical protection of the cover part.
  • the switch can therefore also be wrapped in a winding of a coil when the cover part consists of a PTC thermistor material.
  • the provided with the Abletopf switch can then be subsequently introduced into a cap made of a shrink tubing to isolate the switch to the outside, as it is, for example, from the DE 197 05 153 is known.
  • a shielding pot for the new switch is provided with a peripheral wall which defines an insertion opening at the top and is closed at the bottom by a bottom, wherein the shielding pot consists of an electrically conductive, metallic material, preferably of steel.
  • This shielding pot has the features described above in connection with the new switch, wherein it can be supplied as a separate marketable part of a manufacturer of the temperature-dependent switch via a third party.
  • the present invention further relates to a method for final assembly of a temperature-dependent switch according to the present claim 6.
  • pre-assembled switches in which the switching mechanism has been installed in the housing, can be provided with connection lines at any time and then equipped with a shielding pot, so that they can be wrapped, for example, in windings of transformers.
  • oils or outgassing fluids used in this wrapping can not diffuse or creep into the interior of the switch, so that the switch is not only mechanically stable but also highly sealed against the environment.
  • the new method and the new shielding can be used in switches of any design, with changes to the switches themselves are not required.
  • switches are shown by way of example, each having a pot-like lower part with a wall, the edge of which is flanged inwardly to fix the lid part on a shoulder of the lower part.
  • At least one external connection for a connecting line is provided in the cover part, wherein the other external connection is also provided on the cover part, if the temperature-dependent switching mechanism carries a contact plate, or if the edge itself or the bottom or a wall of the electrically conductive lower part partially as further external connection can be formed.
  • Such switches are often distributed by the applicant's company, they can be equipped with a cover part of PTC thermistor or with a lid part made of insulating material or with a cover part of electrically conductive material, each corresponding insulation measures are provided so that no short circuit between electrically conductive parts that affects the operation of the switch.
  • a shielding pot adapted in its geometry to the respective switch type is now placed on these existing switches if necessary, effectively protecting the pickup switch against the action of electromagnetic fields.
  • step b in the method in step b) two contact angles are fastened in each case with their short legs to one of the two outer terminals, and one of the two connection lines is fastened to its respective long leg.
  • step c the peripheral wall is bent with its upper edge on the top of the housing.
  • the long legs are bent over onto the short legs in step c).
  • the new switch can be protected in a structurally simple and inexpensive way from the effects of electromagnetic fields.
  • Fig. 1 is schematic, not to scale and shown in side section a temperature-dependent switch 1 having a housing 2, which has a cylindrical circumferential wall 10 here, which is formed on an electrically conductive pot-like lower part 11, of a plate-like, electrically conductive cover part 12th is closed.
  • the lid part 12 is held with the interposition of an insulating film 13 by a flanged edge 14 of the wall 10 to the lower housing part 11.
  • a temperature-dependent switching mechanism 15 is arranged, which comprises a Federschnappulation 16, which centrally carries a movable contact member 17 on which a freely inserted bimetallic disc 18 is seated.
  • a bimetallic disc is understood to mean a multilayer, active, sheet-metal component made of two, three or four components which are inseparably connected to one another and have different coefficients of expansion.
  • the connection of the individual layers of metals or metal alloys are cohesively or positively and are achieved for example by rolling.
  • the spring snap disc 16 is supported on a bottom 19 inside of the lower part 11, while the movable contact part 17 is in contact with a fixed contact part 20 which is provided on an inner side 21 of the cover part 12.
  • the lower part 11 is provided with a flat underside 24, via which the switch 1 is thermally coupled to a device to be protected.
  • the two outer terminals 22, 23 are thus adjacent to one another at an upper side 25 of the housing.
  • the temperature-dependent switching mechanism 15 in the in Fig. 1 low-temperature position shown an electrically conductive connection between the two outer terminals 22, 23 forth, the operating current on the fixed contact part 20, the movable contact member 17, the spring snap disk 16 and the lower part 11 flows.
  • Fig. 2 shows a temperature-dependent switch 1 ', which is constructed similar to the switch 1 off Fig. 1 , Same constructive features are denoted by the same reference numerals as in FIG Fig. 1 Provided.
  • the cover part 12 is not made of electrically conductive material, but of a cold conductor material 26 which acts as a self-holding resistor, so that the switch 1' is held in the open state until the supply voltage is switched off ,
  • a "PTC resistor material” is understood to mean an electrically conductive ceramic material which has a positive temperature coefficient, so that its electrical resistance increases as the temperature increases. The course of the electrical resistance value over the temperature is non-linear.
  • PTC thermistors are also referred to as PTC resistors. They are made, for example, from semiconductive, polycrystalline ceramics such as BaTiO3.
  • the stationary contact part 20 is formed by an inner head of a rivet 27, which passes through the lid part and forms the outer terminal 22 with its outer head.
  • Fig. 3 shows a schematic plan view of the switches 1 and 1 ', which do not differ significantly in this view.
  • switches 1 and 1 'from the Fig. 1 and 2 are provided with a switching mechanism 15, in which the current flows through the spring snap disk 16, shows Fig. 4 a switch 1 "', in which the current is passed through a contact plate, so that this switch 1" can switch higher currents.
  • the temperature-dependent switch 1 "comprises a temperature-dependent switching mechanism 111 housed in the housing 2, which again has the lower side 24 and the upper side 25.
  • the housing 2 comprises a circumferential, here cylindrical wall 113 exhibiting lower part 114 and a this closing lid member 115 of insulating material, which is held by a flanged edge 116 of the wall 113 of the lower part 114 at this.
  • a ring 117 is arranged, which is supported on a shoulder 118 of the lower part 114 and there leads a spring snap-action disc 121 of the rear derailleur 111 at its edge.
  • the rear derailleur 111 additionally comprises, in addition to the spring snap-action disc 121, a bimetallic disc 122 which, together with the spring snap-action disc 121, is centrally penetrated by a pin-like rivet 123, by which these are mechanically connected to a current transfer member in the form of a contact plate 124.
  • the rivet 123 has a first shoulder 125 on which the bimetallic disc 122 sits with radial and axial play, with a second shoulder 126 is provided, on which the spring snap disc 121 also sits with radial and axial play.
  • the bimetal disc 122 is supported with its peripheral edge inside in the lower part 114.
  • the already mentioned contact plate 124 has, in the direction of the cover part 115, two electrically interconnected, large-area contact surfaces 127 which cooperate with two stationary contacts 131, 132 arranged on the inner side 129 of the cover part 115, which are inner heads of contact rivets 133, 134 pass through the lid member 115 and serve with their outer heads 135, 136 on the upper side 25 of the lid part 115 and thus of the housing 2 as petroleuman say22 and 23.
  • the lid part 115 is made of insulating material. Like the one from the DE 198 27 113 C2 Known switch, the lid member 115 may alternatively be made of a PTC resistor 26, so represent a PTC resistor, which is electrically connected between the stationary contacts 131, 132. The lid part 115 then acts as a self-holding resistor.
  • Fig. 5 shows a plan view of the switch 1 "in a representation like Fig. 3 , Here, too, a connection line 27, 28 with their respective stripped end 29, 31 soldered to the outer terminals 22, 23 each.
  • the switches 1 and 1 are used in a schematically indicated shielding pot 41, which serves in a manner to be described, the electromagnetic shielding of the switches 1, 1 'and consists of an electrically conductive, metallic material, preferably as a turned part is made of steel.
  • Fig. 6 shows above a schematic side view of the switch 1 "', where there are attached to the outer heads 135, 136 of the contact rivets 133, 134, ie to the pads 22, 23 contact angle 137 and 138 with their short legs 139, 140, wherein at the upstanding long legs 141, 142 are each soldered to a connecting line 27, 28 with their respective stripped ends 29, 31.
  • the housing 2 has an outer diameter designated 39 and between the lower side 24 and upper side 25 a height designated 40 on.
  • shielding pot 41 Under the switch 1 '"is in Fig. 6 in a sectional side view of the FIGS. 3 and 5 known shielding pot 41 is shown, which has a circumferential, here cylindrical wall 42 and is closed at the bottom by a flat bottom 43 having a support surface 44. Opposite the bottom 43, the shielding pot 41 has an insertion opening 45, through which the switch 1 '"with its underside 25 is first inserted, which thereby comes to lie on the support surface 44.
  • the shielding pot 41 has between bearing surface 44 and insertion opening 45 with a designated insertion depth, which is slightly, at least 10% greater than the height 40 of the housing 2.
  • the shielding pot 41 has an inner diameter 47 which is slightly larger than the outer diameter 39 of the housing 2, so that the housing 2 can be inserted into the shielding pot 41 and the wall 42 thereafter tight against the wall 113 of the housing 2.
  • the bottom 43 has a thickness designated 48 and the wall 42 has a thickness designated 49. With 50, the outer diameter of the shielding pot 41 is designated.
  • the shielding pot 41 is made of an electrically conductive, metallic material such as steel, for example, a deep-drawn sheet steel grade DC.
  • the insertion depth 46 is for example 5 mm
  • the outer diameter 50 is for example 10 mm
  • the thicknesses 48 and 49 are, for example, about 0.5 mm in each case.
  • the height 40 is then, for example, 4 mm, so that the wall 43 protrudes about 1 mm above the top 24 when the housing 2 is inserted into the shielding pot 41.
  • Fig. 7 the switch 1 '"is shown in this state inserted into the shielding pot 41, wherein the shielding pot 41 is cut in.
  • the switch 1'" in Fig. 7 is opposite to the representation of Fig. 6 rotated 90 ° counterclockwise, so that the contact angle 137 can be seen from the side.
  • the soldered to the long legs 141, 142 connection lines 28, 27 protrude vertically upwards out of the shielding pot 41.
  • the peripheral wall 42 is bent at its upper edge 51, which is easy to do, because the connecting lines are facing upwards.
  • the housing 2 is now on the bottom surface 24 on the support surface 44 and is held captive in the shielding pot 41 about the after insertion of the housing slightly inward, so on the top 25 of the housing 2 to bent upper edge 51 of the wall 42.
  • the shielding pot 41 establishes the thermal contact with the device to be protected via its underside 52. Because the housing 2 is in thermal contact with the support surface 44 via its lower surface 24 and in thermal contact with the wall 42 via its wall 113, it is thermally connected to the device to be protected. The quality of the thermal connection is determined by the strength of the mechanical system between the housing 2 and shielding pot 4 and by the material from which the Abletopf is made, which is also a good thermal conductor because of its electrical conductivity.
  • the shielding pot 41 shields the housing 2 not only from electromagnetic fields, it also protects it mechanically against pressure loads from above and from the side. This is particularly advantageous for switches whose cover part 12 consists of PTC thermistor material or insulating material.
  • the two long legs 141, 142 are bent along the arrow 53 to the short legs 139, 140, so that the long legs 141, 142 extend approximately parallel to the top 245 and the connecting lines 28, 27 upwards and laterally lead out of the connection pot 41.
  • Fig. 9 is the switch off Fig. 8 in side view with cut connecting lines 27, 28 shown.
  • the Elektroisoliermaterial 54 projects beyond the shielding pot 4 upwards and is curved, so that the top of the housing 2 is mechanically and electrically protected.
  • the switches 1, 1 ', 1 are significantly better protected against the action of electromagnetic fields than if the relevant switch without shielding pot 41 were used, where the influences of the electromagnetic fields on the bimetallic disks and on opening resulting arcing can lead to malfunction or shorten the life.

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Thermally Actuated Switches (AREA)

Claims (6)

  1. Commutateur dépendant de la température, comprenant un boîtier (2), qui comporte une partie formant couvercle (12 ; 115) et une partie inférieure (11 ; 114) ayant une paroi circonférentielle (10 ; 113) et une face inférieure (24), comprenant un mécanisme de commutation dépendant de la température (15 ; 111) disposé dans le boîtier (2), qui établit ou interrompt en fonction de sa température une liaison électriquement conductrice entre deux bornes extérieures (22, 23) prévues sur une face supérieure (25) du boîtier (2), et comprenant un caisson de blindage (41) constitué d'un matériau métallique électriquement conducteur dans lequel le boîtier (2) est inséré par sa face inférieure (24) en premier, et qui présente une paroi circonférentielle (42) délimitant vers le haut une ouverture d'enfichage (45) et est refermé vers le bas par un fond (43), dans lequel les deux bornes externes (22, 23) sont pourvues de lignes de connexion (27, 28) qui sortent du caisson de blindage (41) vers le haut,
    caractérisé en ce que la paroi circonférentielle (42) est repliée par son bord supérieur (51) sur la face supérieure (25) du boîtier (2), des cornières de contact (137, 138) sont fixées par leurs branches courtes (139, 140) aux bornes externes (22, 23), dans lequel les lignes de connexion (27, 28) sont fixées à leurs branches longues (141, 142), et les branches longues (141, 142) sont repliées sur les branches courtes (139, 140).
  2. Commutateur selon la revendication 1, caractérisé en ce que le caisson de blindage (41) est réalisé en acier.
  3. Commutateur selon la revendication 1 ou 2, caractérisé en ce que le caisson de blindage (41) présente une profondeur d'enfichage (46) qui correspond au moins à la hauteur (40) du boîtier (2) entre la face supérieure (25) et la face inférieure (24).
  4. Commutateur selon la revendication 3, caractérisé en ce que la profondeur d'enfichage (46) est supérieure d'au moins 10% à la hauteur (40).
  5. Commutateur selon l'une des revendications 1 à 4, caractérisé en ce qu'un matériau électriquement isolant (54), de préférence un adhésif de silicone, un plastique thermodurcissable à un seul composant ou une résine, qui recouvre au moins les deux bornes externes (22, 23) et relie le caisson de blindage (41) au boîtier (2), est appliqué sur la face supérieure (25).
  6. Procédé pour le montage final d'un commutateur dépendant de la température selon l'une des revendications 1 à 5, comprenant les étapes consistant à :
    a) fournir un commutateur dépendant de la température (1 ; 1' ; 1") comprenant un boîtier (2), qui comporte une partie formant couvercle (12 ; 115) et une partie inférieure (11 ; 114), et comprenant un mécanisme de commutation dépendant de la température (15 ; 111) disposé dans le boîtier (2), qui établit ou interrompt en fonction de sa température une liaison électriquement conductrice entre deux bornes externes (22,23) prévues sur le commutateur (1, 1', 1") ;
    b) relier respectivement une ligne de connexion (27, 28) à l'une des bornes externes (22, 23) en fixant deux cornières de contact (137, 138) par leurs branches courtes (139, 140) respectives à l'une des deux bornes externes (22, 23), et en fixant l'une des deux lignes de connexion (27, 28) à leurs branches longues (141, 142) respectives ;
    c) insérer le commutateur (1 ; 1' ; 1") par la face inférieure (24) en premier dans un caisson de blindage (41) constitué d'un matériau métallique électriquement conducteur, qui est muni d'une paroi circonférentielle (42) délimitant vers le haut une ouverture d'enfichage (45) et refermée vers le bas par un fond (43), de manière à ce que les lignes de connexion (27, 28) sortent vers le haut du caisson de blindage (41), à ce que la paroi circonférentielle (42) soit repliée par son bord supérieur (51) sur la face supérieure (25) du boîtier (2), puis à ce que les branches longues (141, 142) soient repliées sur les branches courtes (139, 140) ;
    d) appliquer un matériau électriquement isolant (54) sur la face supérieure (25) du boîtier (2), de manière à ce que le matériau électriquement isolant (54) recouvre au moins les bornes externes (22, 23) prévues sur la face supérieure (25) ; et
    e) laisser durcir le matériau électriquement isolant (54).
EP13191916.9A 2012-12-13 2013-11-07 Commutateur thermodépendant Active EP2743954B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL13191916T PL2743954T3 (pl) 2012-12-13 2013-11-07 Przełącznik zależny od temperatury

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012112207.5A DE102012112207B3 (de) 2012-12-13 2012-12-13 Temperaturabhängiger Schalter

Publications (2)

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EP2743954A1 EP2743954A1 (fr) 2014-06-18
EP2743954B1 true EP2743954B1 (fr) 2019-08-21

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EP13191916.9A Active EP2743954B1 (fr) 2012-12-13 2013-11-07 Commutateur thermodépendant

Country Status (7)

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US (1) US20140167907A1 (fr)
EP (1) EP2743954B1 (fr)
CN (1) CN103871777A (fr)
DE (1) DE102012112207B3 (fr)
DK (1) DK2743954T3 (fr)
ES (1) ES2752180T3 (fr)
PL (1) PL2743954T3 (fr)

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Publication number Priority date Publication date Assignee Title
US9831054B2 (en) 2014-03-27 2017-11-28 Littelfuse, Inc. Insulated thermal cut-off device
US20160370813A1 (en) * 2015-06-19 2016-12-22 Phillips & Temro Industries Inc. Thermostat Assembly and Method of Manufacturing
US11195679B2 (en) 2018-11-28 2021-12-07 Marcel P. HOFSAESS Temperature-dependent switch
DE102018130078B4 (de) * 2018-11-28 2020-10-15 Marcel P. HOFSAESS Temperaturabhängiger Schalter
DE102019112581B4 (de) * 2019-05-14 2020-12-17 Marcel P. HOFSAESS Temperaturabhängiger Schalter

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DE2442397A1 (de) 1974-09-04 1976-03-18 Thermik Geraetebau Gmbh Bimetallschalter mit kunststoffisolierung
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IT8153530V0 (it) * 1981-08-07 1981-08-07 Aspera Spa Gruppo di alimentazione e protezione di un compressore ermetico di una macchina frigorifera con regolazione termostatica
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Also Published As

Publication number Publication date
ES2752180T3 (es) 2020-04-03
US20140167907A1 (en) 2014-06-19
PL2743954T3 (pl) 2020-02-28
DK2743954T3 (da) 2019-11-11
EP2743954A1 (fr) 2014-06-18
DE102012112207B3 (de) 2014-02-13
CN103871777A (zh) 2014-06-18

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