EP2874171A1 - Mécanisme de commutation variable avec la température - Google Patents

Mécanisme de commutation variable avec la température Download PDF

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Publication number
EP2874171A1
EP2874171A1 EP20140187984 EP14187984A EP2874171A1 EP 2874171 A1 EP2874171 A1 EP 2874171A1 EP 20140187984 EP20140187984 EP 20140187984 EP 14187984 A EP14187984 A EP 14187984A EP 2874171 A1 EP2874171 A1 EP 2874171A1
Authority
EP
European Patent Office
Prior art keywords
derailleur according
temperature
frame
snap
switch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP20140187984
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German (de)
English (en)
Other versions
EP2874171B1 (fr
Inventor
René Neumann
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.)
Thermik Geraetebau GmbH
Original Assignee
Thermik Geraetebau 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 Thermik Geraetebau GmbH filed Critical Thermik Geraetebau GmbH
Publication of EP2874171A1 publication Critical patent/EP2874171A1/fr
Application granted granted Critical
Publication of EP2874171B1 publication Critical patent/EP2874171B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01H37/02—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
    • H01H37/32—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
    • H01H2037/5445—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting with measures for avoiding slow break of contacts during the creep phase of the snap bimetal
    • 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
    • H01H2037/5454—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting with separate spring biasing the bimetal snap element against the heat transfer surface
    • 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
    • H01H2037/5463—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting the bimetallic snap element forming part of switched circuit

Definitions

  • the present invention relates to a temperature-dependent switching mechanism with a bimetallic snap disk and a movable contact member and preferably a spring snap-action disc.
  • Such a temperature-dependent switching mechanism and a temperature-dependent switch equipped therewith are, for example, from the DE 43 45 350 A1 known.
  • the known temperature-dependent switch comprises a housing with a metallic lower part and a metallic cover part.
  • a temperature-dependent switching mechanism is housed, which produces an electrically conductive connection between the lower part and the cover part of the housing as a function of its temperature.
  • the rear derailleur is equipped with a spring snap-action disc and a bimetal snap-action disc.
  • the spring snap-action disc carries as a contact member a so-called movable contact part, which is pressed by the spring washer against a stationary counter contact inside of the cover part, which has a first contact surface forms. With its edge, the spring snap-action disc is supported on a second contact surface in the lower part of the housing, so that the electric current flows from the lower part through the spring snap-action disc and the movable contact part into the stationary counter-contact and from there into the cover part.
  • the lower part of the housing is pot-shaped, it has on its inner side a circumferential shoulder on which rests the spring snap-action disc of the temperature-dependent switching mechanism.
  • the spring snap disc carries a centrally welded contact part over which the bimetallic snap disk is slipped, so that it rests loosely on the spring snap disk.
  • the cover part of the housing rests on another circumferential shoulder of the lower part. Because the lower part and the cover part of the housing are made of electrically conductive material, an insulating film is arranged between them, the lower part and the cover part of the housing electrically insulated from each other.
  • the outer side of the cover part of the housing serves as a first external connection, where a first stranded wire is soldered.
  • the outer side of the lower part serves as a second outer terminal, where a terminal lug is attached, to which a second pigtail is soldered.
  • the known temperature-dependent switch is used to protect electrical equipment from overheating.
  • it is mounted on the device to be protected so that it is in thermal contact with the device.
  • the power supply circuit of the device is routed through the temperature-dependent switch by connecting a device connection cable to one of the external connections of the switch and the other external connection of the switch to the power supply for the device.
  • the temperature-dependent switch always assumes the temperature of the electrical device to be protected. If the temperature of the device now rises above a predetermined response temperature, the bimetallic snap-action disc jumps into its high-temperature position, in which it opens the switch, so that the supply circuit of the device is interrupted, which consequently can not heat up further.
  • the bimetallic snap-action disc is mounted mechanically force-free below its transition temperature, wherein the bimetallic snap disk is not used to conduct the operating current of the device to be protected.
  • the bimetallic snap discs have a long mechanical life, and that the switching point, so the transition temperature of the bimetallic snap disk, not changed even after many switching cycles.
  • the temperature-dependent switching mechanism may also comprise only a bimetallic snap-action disk which carries the movable contact part and thus carries the operating current.
  • a current transfer element in the form of a contact bridge or a contact plate is frequently used as the contact element, which is moved by a spring part, that is to say a spring snap-action disc and / or a bimetallic snap-action disc and carries two contact parts. which cooperate with two stationary mating contacts, which are electrically connected to the external terminals of the switch.
  • the operating current of the device to be protected flows from the first mating contact via the first contact part into the contact plate, through it to the second contact part and from this into the second mating contact.
  • the spring part is thus de-energized.
  • the temperature-dependent switching mechanism has a bimetallic snap-action disc and a spring snap-action disc, both of which are held captive on a movable contact part.
  • the bimetallic snap disk lies with its edge between a shoulder on an annular insulating ring and a cover of the housing.
  • Below the bimetallic snap disk is the spring snap disk, which is arranged with its edge loose between a lying on the inner bottom of the housing base contact ring and an electrically conductive spacer ring. The relative position of bimetallic snap disk and spring snap disk to each other can also be reversed.
  • the temperature-dependent switching mechanism has a bimetal snap-action disc and a spring snap-action disc, both of which are captively held on a contact plate which cooperates with two stationary mating contacts on the inside of the housing cover.
  • the arranged above the bimetallic snap disk spring snap-action disc is guided with its edge between an inner shoulder of the housing base and a ring arranged between the shoulder and the housing cover.
  • the present invention has the object, the known switching mechanism in such a way that simplifies the assembly of the thus equipped temperature-dependent switch, in particular, the switch itself can be constructed mechanically simpler and cheaper.
  • the switching mechanism has an annular frame in which the bimetallic snap disk and possibly provided spring snap-action disc are held captive.
  • a temperature-dependent switching mechanism can be constructed, as it were, like a pushbutton, ie with an annular frame in which the bimetal snap-action disc or two snap-action discs are held captive, which preferably takes place over their edges in order to snap it over to allow the domes in their respective centers.
  • the or each snap-action disc is captively arranged in the annular frame, so that the switching mechanism can be pre-produced and tested without the complete assembly of a temperature-dependent switch itself is required.
  • the or each snap-action disc is mechanically protected from damage, so that the completed and tested new derailleur can be stored as bulk material, which is the prerequisite for a subsequent automatic assembly of equipped with the new rear derailleur switch.
  • the lower parts of a temperature-dependent switch equipped therewith can be made simpler, rotating parts, for example made of brass, are no longer necessary.
  • the lower part of a temperature-dependent switch which is designed with the new rear derailleur, therefore, an inexpensive deep-drawn part made of steel.
  • the mechanical protection of the or each snap-action by the annular frame also provides more freedom in shaping the housing of the equipped with the new rear derailleur temperature-dependent switch, since the snap discs are no longer aligned in the housing but with the annular frame and support.
  • the new rear derailleur can be inserted into a two-part housing as well as into a one-piece, so-called slide-in housing.
  • the new derailleur has only a bimetallic snap disk, which produces both the closing pressure and the operating current leads, it is particularly preferred if the new derailleur has a bimetallic snap disk and a spring snap disk, said both snap disc are arranged one above the other.
  • the annular frame does not necessarily have to be circular, it may also be oval, rectangular, square or oblong rounded. Corresponding shapes then also has the or each snap disc. This is particularly advantageous if the new rear derailleur is to be used in a plug-in housing.
  • the annular frame and the one or both snap-action disks are preferably of circular design.
  • the movable contact member may be either a contact bridge, on which two contact parts are arranged, which are electrically connected to each other via the contact bridge and each interact with a stationary counter contact, or a contact part, which cooperates with a stationary counter-contact, wherein the operating current then via a Snap disk flows.
  • the contact member may further be both a separate component, as well as be formed on the bimetal schnapps slice and / or the spring snap-action disc itself.
  • the annular frame can also compensate for height and curvature tolerances in the snap discs, so that no further action must be taken.
  • the frame can be designed so that its installation height can be readjusted by suitable deformation of the edge of the frame to compensate for installation tolerances.
  • the annular frame has an upper annular surface, and preferably has a lower annular surface, wherein more preferably the upper and lower annular surfaces are arranged parallel to each other and connected by a transverse to the annular surfaces, circumferential cylindrical surface.
  • the upper and / or lower annular surface and possibly the cylindrical surface can be made a contacting of the annular frame, so for example.
  • the electrical contact to a consisting of conductive material lower part or a test device.
  • a conical transition surface is arranged between the cylindrical surface and the lower annular surface.
  • This conical transition surface allows the insertion of the new rear derailleur in deep-drawn parts, in which the transition between the ground and the circumferential wall is not formed at right angles. So here is an advantage that structurally simple and inexpensive parts can be used for the equipped with the new rear derailleur switch.
  • the movable contact member is preferably formed as a movable contact part, which is arranged between the bimetallic snap disk and spring snap disk.
  • a snap-action disc is then firstly inserted into the annular frame, then the movable contact part is placed on the snap-action disc, and then the other snap-action disc is inserted into the frame, because the lower snap-action disc is already held in the frame during insertion of the movable contact part. makes the installation of the new rear derailleur very easy.
  • the snap-on disc can be kept simpler and more reliable than a loose snap-action disc, eliminating the risk that the snap-action disc will already be damaged during this assembly step.
  • the bimetallic snap disk is fixed captive with play on the movable contact member and preferably the spring snap disc is captively fixed to the movable contact member.
  • the three active components of the new switching mechanism so the bimetallic snap disk, the spring snap disc and the movable contact member need not be inserted sequentially in the annular frame, which is technically quite possible, but as a unit in the framework can be introduced. This facilitates the assembly of the new rear derailleur.
  • a lower circumferential shoulder is arranged in the frame, on which the bimetallic snap disk is supported at the transition in its low-temperature position with its edge, preferably inside the frame, an upper circumferential shoulder is arranged at which the spring snap-action disc is fixed over its edge.
  • the two shoulders used for the switching function are arranged inside in the annular frame, so that neither the edge of the bimetallic snap disk nor the edge of the spring snap-action disc protrudes upwards or downwards over the frame, if the rear derailleur, for example is tested outside a switch and is exposed to both high and low temperatures.
  • the spring snap-action disc In the low-temperature position, the spring snap-action disc is supported by its edge on the upper circumferential shoulder and pushes the movable contact member upwards, ie in the assembled switch against the or each stationary contact part.
  • the bimetallic snap disk is in this closed position without force below the spring snap disk.
  • the bimetallic snap disk presses with its edge from below against the spring snap-action disc and thus opens the switch.
  • the bimetallic snap disk When switching back to the low temperature position, the bimetallic snap disk first snaps around, whereby it is now supported with its edge on the lower shoulder because of the further lying at the lower annular surface movable contact member while the center of the spring-snap disc and with this the movable contact member pushes upwards, whereby the spring snap-action disc is pressed back into its first geometrically stable position in which it holds the switch electrically closed.
  • top or “above” is understood to mean a direction from the bimetallic snap disk to the stationary contact member, with a direction “downward” or “below” from the spring snap disk to the bimetal below it Snapping disk is understood.
  • the bimetallic snap-action disc is below the spring snap-action disc.
  • the upper shoulder is arranged in an inner circumferential groove in the frame in which the spring snap-action disc is fixed with its edge, wherein preferably the edge of the spring snap-action disc is engaged in the groove or alternatively by a the laying of the edge of the spring snap disc on the upper shoulder embossed projection is fixed.
  • the three active components are inserted individually or as an interconnected, for example via the movable contact member unit in the annular frame and then coined a projection on the edge of the spring snap-action disc.
  • the derailleur has a flat, blechianos power transmission member which is connected to the contact member designed as a movable contact part, wherein the current transmitting member is preferably connected to the annular frame.
  • connection to the annular frame can on the one hand take place in that the current transfer member rests with its edge on the lower shoulder, that is arranged on the side of the bimetallic snap disk.
  • the current transmission member may also be on the side of the spring snap-action disc and be arranged with its edge in the circumferential groove.
  • the current transmitting member When the current transmitting member is connected to both the movable contact member and the annular frame, it provides a permanent electrical connection between the movable contact member and the annular frame, so it is connected in electrically conductive annular frame to the spring snap disc, so to speak electrically in parallel and allows a higher strength of the flowing operating current.
  • the current transmitting member is arranged with its edge above the upper annular surface or below the lower annular surface.
  • the edge of the current transmission member may be fastened on the upper or lower annular surface, for example by spot welding.
  • the power transmission member When mounting a equipped with the new rear derailleur temperature-dependent switch, the power transmission member is clamped with its edge between the lower ring surface and the bottom of the housing base or between the upper annular surface and the inside of the lid.
  • edge of the current transmitting member is not attached to the upper or lower ring surface, the electrical contacting of the edge of the current transmitting member takes place only during the assembly of the equipped with the new rear derailleur switch.
  • the annular frame comprises electrically conductive material or electrically insulating material.
  • the annular frame itself When the annular frame itself is electrically conductive, the operating current of the device to be protected flows through the frame itself and through the spring snap-action disc or the bimetallic snap-action disc, if the spring snap-action disc is dispensed with in a simple switch, and by the latter movable contact part.
  • the frame is made of electrically insulating material, then the current is transmitted through the current transmission member, which is contacted as described above, or through the contact member designed as a contact bridge with two contact parts.
  • the current transfer member can then represent a small series resistance, so that it provides as a heating resistor for a current-dependent switching function. This is particularly useful when the power transmission member lies with its edge below the lower ring surface, because it is then in the immediate vicinity of the bimetallic snap disk, which is then effectively heated by the developed ohmic heat.
  • the spring snap-action disc which ensures the contact pressure between the movable contact part and the stationary mating contact when the switch is closed, is not heated up so much, which increases its service life.
  • the operating current flows through the movable contact part and the current transfer member, the spring snap-action disc is always de-energized, which also increases their life.
  • the annular frame comprises electrical resistance material, preferably at least one resistance layer.
  • the frame itself may, for example. From PTC material or other suitable material, where it depends on the interconnection and arrangement can serve as a self-holding resistor and / or as a series resistor for current-dependent switching.
  • a frame of resistance material can serve as a self-holding resistor.
  • annular frame with a resistance layer which is arranged on the upper annular surface, the lower annular surface and / or the cylindrical outer wall and serves as a self-holding resistor or series resistance for current-dependent switching.
  • the current transmission element can also be designed with a corresponding resistance value, so that it provides for current-dependent switching.
  • the rear derailleur can also serve to stabilize the housing, wherein the switching mechanism can also be used directly in a receiving opening in a device, as in principle from the DE 195 06 342 C1 is known.
  • the present invention also relates to a temperature-dependent switch with a pot-like lower part, which is closed by a cover part, and with two external terminals, wherein in the switch, the new temperature-dependent switching mechanism is arranged, which, depending on its temperature, an electrically conductive connection between the two external connections manufactures.
  • the present invention relates to a temperature-dependent switch with a plug-in housing, on which two external connections are provided, wherein in the plug-in housing, the new temperature-dependent switching mechanism is used, which produces an electrically conductive connection between the two external connections as a function of its temperature.
  • Fig. 1 is designated by a temperature-dependent switching mechanism 10, which has a circular bimetallic snap disk 11 and arranged above the bimetallic snap disk 11 circular spring snap-action disc 12.
  • the bimetallic snap disk 11 and the spring snap disk 12 are arranged captive on a movable contact part 14.
  • the bimetallic snap disk 11 and the spring snap-action disc 12 are held captive in a likewise annular annular frame 15 which has an upper annular surface 16 and a lower annular surface 17 parallel thereto, which lies radially further inward than the upper annular surface 16 Ring surface 16 and the lower annular surface 17 are interconnected via a transverse to the annular surfaces 16, 17 extending cylindrical surface 18 and a conical transition surface 19 which extends inclined between the cylindrical surface 18 and the lower annular surface 17.
  • the movable contact member 14 projects upwardly above the upper annular surface 16, the lower annular surface 17 is downwardly over the movable Contact part 14 and in particular on the bimetallic snap disk 11 and the spring snap disk 12 before, so that when opening the rear derailleur 10, the movable contact member 14 does not project down over the lower annular surface 17, so that no special measures must be taken to a To prevent contact between the movable contact part 14 and an inner bottom of a switch equipped with the switch when the switch opens.
  • the bimetallic snap disk 11 rests with its edge 21 loosely on an inner, in the frame 15 encircling, annular lower shoulder 22.
  • the spring snap-action disc 12 lies with its edge 23 on an inner in the frame 15 annular circumferential, upper shoulder 24 which is formed in a groove 25 which is formed by the shoulder 24 and the edge 23 cross-projection 26.
  • the spring snap-action disc 12 is held captive in the groove 25 and thus in the frame 15 via its edge 23.
  • the spring snap-action disc sits captive but with play in a circumferential groove 28 which is arranged on the movable contact part 14.
  • the bimetallic snap-action disc 11 is held captive but with play.
  • the rear derailleur 10 can be tested before mounting in a switch and store as bulk material, because the edges 21, 23 of the snap discs 11, 12 are protected by the frame 15 and the spring snap-action disc 12 can be contacted via the frame 15.
  • the rear derailleur 10 may also have only one snap-action disc, namely the bimetal snap-action disc 11, which is then arranged in the frame 15, as it is in Fig. 1 for the spring snap-action disc 12 is shown.
  • the bimetallic snap disk 11 is then arranged with its edge 21 in the circumferential groove 25 and fixed so captive in the frame 15.
  • the bimetallic snap disk 11 then carries the movable contact part 14, on which it is arranged with its inner portion captive but with play in the circumferential groove 28.
  • FIG. 2 shown temperature-dependent rear derailleur 10 'is basically the same structure as the rear derailleur 10 Fig. 1 However, it is additionally provided with a sheet-like current transmission member 31 which is welded at its center 32 to the movable contact part 14.
  • the current transfer member 31 protrudes beyond the lower annular surface 17.
  • the edge 33 may be fixedly connected to the annular surface 17 by spot welding. Also, the rear derailleur 10 'can be tested before the shoring.
  • a temperature-dependent switch 35 is shown, which has a pot-like lower part 36 which is closed by a plate-like cover part 37.
  • the rear derailleur 10 ' is made Fig. 2 inserted so that the frame 15 with its cylindrical surface 18 inside in contact with a peripheral wall 38 of the lower part 36 and the peripheral wall 38 so stabilized.
  • the power transmission member 31 is clamped with its edge 33 between the lower annular surface 17 and an inner bottom 39 of the lower part 36.
  • the lower part 36 is a deep-drawn part, so that the transition between wall 38 and bottom 39 is not formed exactly, in particular not at right angles. Because the frame 15 has the conical transition surface 19, it can still be positioned exactly in the lower part 36.
  • an insulating film 41 which extends laterally between the cover member 37 and the wall 38 upwardly and is then pressed from above onto the cover member 37, to which the wall 38 was crimped at its upper edge 42 ,
  • the edge 42 presses on the cover part 37 and this on the insulating film 41 on the upper annular surface 16, whereby the frame 15 and thus the switching mechanism 10 'is fixedly mounted in the temperature-dependent switch 35 and at the same time the electrical contact between the inner bottom 39 of the lower part 36 and the edge 33 of the power transmission member 31 is made.
  • the annular frame 15 can be made here both of electrically conductive material and of electrically insulating material.
  • a stationary mating contact 44 is arranged, which in the in Fig. 3 shown closed state of the switch 35 is in contact with the movable contact part 14.
  • switching state is the bimetallic snap disk 11 forces in the rear derailleur 10 ', while the spring snap disk 12 is supported with its edge 23 in the groove 25 and the movable contact member 14 presses against the stationary counter contact 44. In this way, the electrical circuit between the stationary mating contact 44 and the existing here of electrically conductive material lower part 36 is closed, wherein the operating current of a device to be protected via the current transfer member 31 and possibly also via the spring snap disk 12 flows.
  • the switch 35 has two outer terminals, which are formed by the outer bottom 36 'of the lower part 36 and the outer surface 44' of the stationary mating contact 44. When switch 35 is closed, the two outer terminals 36 'and 44' are electrically conductively connected to one another.
  • annular frame 15 is made of an electrically insulating material, can be dispensed with the insert of the insulating film 41.
  • the operating current then flows when the switch 35 is closed only by the current transfer member 31, which heats up depending on their contact resistance.
  • the current transmitting member 31 is located on the side of the bimetallic snap disk 11, the evolving ohmic heat leads to rapid heating of the bimetallic snap disk 11, which ensures an accurate response of the switch 35 to an excessive operating current of a device to be protected.
  • the spring snap-action disc 12 remains de-energized in this embodiment, it shows a long life.
  • the annular frame 15 consists of an electrically conductive material or is covered with a layer of an electrically conductive material, it represents a parallel resistor which is parallel to the switching mechanism 10 'both with the electrically conductive cover part 37 and with the electrically conductive lower part 36 is connected, although here is dispensed with the insert of the insulating film 41.
  • the self-holding resistor thus formed is short-circuited by the highly electrically conductive current transmitting member 31.
  • the switch 35 opens, the self-holding resistor formed by the annular frame 15 is now in series between the stationary mating contact 44 and the base 36, so that a residual current flows through the switch 35, which keeps the switching mechanism open until the power supply of the is switched off to be protected electrical device.
  • the power transmission member 31 can provide as a heating resistor for a current-dependent switching.
  • the annular frame 15 may consist of electrically conductive material or, for example, on the cylindrical surface 18 or the lower annular surface 17 have an electrically conductive layer.
  • the frame 15 may be so covered with resistive material that it acts as a self-holding resistor.
  • the height of the frame 15 between the upper and lower annular surface 16, 17 may be chosen so that the movable contact member 14 does not come into contact with the bottom 39 when the switch 35 is open.
  • a current transfer member 31 which projects down over the lower annular surface 17, shows the Fig. 4 a plan view of the rear derailleur 10 Fig. 1 , which is now provided with a current transmitting member 45, which is connected on the one hand to the movable contact part 14 and on the other hand to the upper annular surface 16, under which it extends.
  • the current transfer member 45 could also extend over the upper annular surface 16, so that it would then be clamped in a switch 35 between the upper annular surface and the inner side 43 of the cover part 37.
  • the power transmission member 45 is permanently connected to both the movable contact member 14 and the frame 15, so that it serves not only the power transmission but also as an arc screen.
  • the current transmitting member 45 may also extend only to one side away from the movable contact member 14 so as to leave free a large area of the top of the spring snap-action disc.
  • Fig. 5 is an embodiment of the current transfer member 31 in a schematic plan view Fig. 2 shown.
  • the current transmitting member 31 is formed as a circular disc in which curved, spiral and radially outwardly extending slots 46, 47 are located. These slots 46, 47 reduce the spring action of the current transfer member 31, so that it does not counteract when switching the spring force of the bimetallic snap disk and the spring snap-action disc 12.
  • a plug-in housing 50 is shown with walls 51 of electrically insulating material which limit an insertion opening 52.
  • the rear derailleur 10 is made Fig. 1 inserted.
  • the frame 15 comes into contact with a bottom electrode 53 and the movable contact part 14 in abutment with a cover electrode 54th
  • Bottom electrode 53 and cover electrode 54 are formed on the inside of the walls 51 and connected in a manner not shown with external terminals 55 and 56, respectively.
  • the plug-in housing 50 can be used as a temperature-dependent switch, in which the switching mechanism 10 between the external terminals 56, 57 produces or opens an electrical connection depending on temperature.
  • the insertion housing 50 is part of a device to be protected, in which a pocket forms the insertion opening 52.
  • the external connections can then lead to windings or components between which the switching mechanism 10 establishes or opens a temperature-dependent electrical connection.
  • Fig. 7 is a schematic functional picture of the switch 35 Fig. 3 shown.
  • the switch 35 is closed, so that the operating current of the electrical appliance to be protected by the cover part 35 and the movable contact part 14, from this by the spring snap-action disc 12 and in parallel by the current transfer member 31, and then by the frame 15 and the lower part 36th flows.
  • the operating current flows only through the lid part 35 and the movable contact part 14, from the latter through the current transmitting member 31 and then through the lower part 36.
  • the insulating film 41 is replaced by a lying between the cover part 37 and frame 15 resistance layer 57.
  • the frame 15 is made of electrically conductive material.
  • the current flows as in the switch 35 Fig. 7 , However, if the switch 35 'is opened, a residual current flows through cover part 37, resistance layer 57, frame 15 and lower part 36. In the resistance layer 57, a sufficient ohmic heat develops, which prevents the bimetallic snap disk 11 from cooling below its return temperature. so that the switch 35 'remains open.
  • the frame 15 may also itself entirely or partially consist of resistance material in order to realize the self-holding function.
  • Fig. 9 the switch 35 is off Fig. 7 modified so that the power transmission member 31 is formed as a series resistor.
  • the frame 15 is electrically insulating, so that it is possible to dispense with the insulating film 41.
  • the operating current flows through the cover part 37, movable contact member 14 and power transmission member 31 in the lower part 36.
  • the current transmission member 31 heated by the integrated series resistance at high current flow so far that the developed ohmic heat the switch 35 "already opens before the heat developed by the device to be protected heats it up to the point where it opens.
  • Fig. 10 the switch 35 is off Fig. 7 shown, but without Stromübertragungsglied 31.
  • the frame 15 is made of resistance material, so that it acts as a series resistor for current-dependent switching.
  • Fig. 11 is the switch 35 '"off Fig. 10 shown, wherein the frame 15 is electrically conductive here.
  • the insulating film 41 is as in the switch 35 'off Fig. 8 a resistance layer 57 is provided.
  • the frame 15 here as well may consist entirely or partially of resistance material in order to realize the self-holding function.
  • the switch 35 IV may still have a resistive layer 58 between the frame 15 and lower part 36, which provides series resistance for current-dependent switching, because he is 35 IV closed circuit in the circuit of the operating current and heats up at high current flow so far that the Switch 35 IV opens.
  • the resistance of the resistive layer 57 is much greater than that of the resistive layer 58.
EP14187984.1A 2013-10-17 2014-10-07 Mécanisme de commutation variable avec la température Active EP2874171B1 (fr)

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DE201310017232 DE102013017232A1 (de) 2013-10-17 2013-10-17 Temperaturabhängiges Schaltwerk

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EP (1) EP2874171B1 (fr)
CN (1) CN104576193A (fr)
DE (1) DE102013017232A1 (fr)
DK (1) DK2874171T3 (fr)
ES (1) ES2579378T3 (fr)
HK (1) HK1206483A1 (fr)
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DE102014108518A1 (de) 2014-06-17 2015-12-17 Thermik Gerätebau GmbH Temperaturabhängiger Schalter mit Distanzring
DE102019128367B4 (de) * 2019-10-21 2021-06-10 Marcel P. HOFSAESS Temperaturabhängiger schalter
DE102022118405B3 (de) 2022-07-22 2023-08-24 Marcel P. HOFSAESS Temperaturabhängiges Schaltwerk und temperaturabhängiger Schalter mit einem solchen Schaltwerk
DE102022118402B3 (de) * 2022-07-22 2023-08-24 Marcel P. HOFSAESS Temperaturabhängiges Schaltwerk, temperaturabhängiger Schalter und Verfahren zur Herstellung eines temperaturabhängigen Schaltwerks
DE102022120447B3 (de) * 2022-08-12 2023-11-30 Marcel P. HOFSAESS Temperaturabhängiger Schalter
DE102022120446B3 (de) 2022-08-12 2023-11-30 Marcel P. HOFSAESS Temperaturabhängiger Schalter
DE102022120445B3 (de) 2022-08-12 2023-11-30 Marcel P. HOFSAESS Temperaturabhängiger Schalter
DE102022134380B3 (de) 2022-12-21 2024-02-08 Marcel P. HOFSAESS Temperaturabhängige Schaltwerke und temperaturabhängiger Schalter mit einem solchen Schaltwerk

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DE8690150U1 (fr) 1985-11-07 1987-11-19 Limitor Ag, Zuerich, Ch
DE19506342C1 (de) 1995-02-23 1996-05-09 Marcel Peter Hofsaes Elektrischer Verbraucher
EP0756301A2 (fr) * 1995-07-26 1997-01-29 Thermik Gerätebau GmbH Thermostat
DE4345350C2 (de) 1993-10-30 1997-05-22 Hofsaes Geb Zeitz Ulrika Temperaturabhängiger Schalter sowie Verfahren für dessen Herstellung
DE202005019880U1 (de) 2005-12-20 2006-02-16 Inter Control Hermann Köhler Elektrik GmbH & Co. KG Temperaturregler und Kombination von Temperaturregler und Temperatursicherung
WO2010139781A1 (fr) * 2009-06-05 2010-12-09 Hofsaess Marcel P Pièce bimétallique et commutateur dépendant de la température équipé de ladite pièce
EP2503576A1 (fr) * 2011-03-22 2012-09-26 Marcel P. Hofsaess Procédé destiné à la fabrication d'un commutateur dépendant de la température
DE202013101153U1 (de) * 2013-02-13 2013-03-27 Thermik Gerätebau GmbH Temperaturabhängiger Schalter
DE102011119633B3 (de) 2011-11-22 2013-04-11 Marcel P. HOFSAESS Temperaturabhängiger Schalter

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DE3122899C2 (de) * 1981-06-10 1984-10-11 Peter 7530 Pforzheim Hofsäss Temperaturschalter
US4952901A (en) * 1989-12-22 1990-08-28 Elmwood Sensors, Inc. Bimetallic disc assembly for thermostatic switch and disc retainer therefor
US5043690A (en) * 1990-07-12 1991-08-27 Sundstrand Data Control, Inc. Balanced snap action thermal actuator
DK0729166T3 (da) 1995-02-23 1999-12-27 Marcel Hofsoss Elektrisk forbruger
DE19527253B4 (de) * 1995-07-26 2006-01-05 Thermik Gerätebau GmbH Nach dem Baukastenprinzip aufgebauter Temperaturwächter
DE19604939C2 (de) * 1996-02-10 1999-12-09 Marcel Hofsaes Schalter mit einem temperaturabhängigen Schaltwerk
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DE19727197C2 (de) * 1997-06-26 1999-10-21 Marcel Hofsaess Temperaturabhängiger Schalter mit Kontaktbrücke
DE19827113C2 (de) * 1998-06-18 2001-11-29 Marcel Hofsaes Temperaturabhängiger Schalter mit Stromübertragungsglied
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DE8690150U1 (fr) 1985-11-07 1987-11-19 Limitor Ag, Zuerich, Ch
DE4345350C2 (de) 1993-10-30 1997-05-22 Hofsaes Geb Zeitz Ulrika Temperaturabhängiger Schalter sowie Verfahren für dessen Herstellung
DE19506342C1 (de) 1995-02-23 1996-05-09 Marcel Peter Hofsaes Elektrischer Verbraucher
EP0756301A2 (fr) * 1995-07-26 1997-01-29 Thermik Gerätebau GmbH Thermostat
DE19527254A1 (de) 1995-07-26 1997-01-30 Thermik Geraetebau Gmbh Temperaturwächter
DE202005019880U1 (de) 2005-12-20 2006-02-16 Inter Control Hermann Köhler Elektrik GmbH & Co. KG Temperaturregler und Kombination von Temperaturregler und Temperatursicherung
WO2010139781A1 (fr) * 2009-06-05 2010-12-09 Hofsaess Marcel P Pièce bimétallique et commutateur dépendant de la température équipé de ladite pièce
EP2503576A1 (fr) * 2011-03-22 2012-09-26 Marcel P. Hofsaess Procédé destiné à la fabrication d'un commutateur dépendant de la température
DE102011119633B3 (de) 2011-11-22 2013-04-11 Marcel P. HOFSAESS Temperaturabhängiger Schalter
DE202013101153U1 (de) * 2013-02-13 2013-03-27 Thermik Gerätebau GmbH Temperaturabhängiger Schalter
DE102013101393A1 (de) 2013-02-13 2014-08-14 Thermik Gerätebau GmbH Temperaturabhängiger Schalter

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Publication number Publication date
PL2874171T3 (pl) 2016-09-30
DK2874171T3 (en) 2016-07-18
ES2579378T3 (es) 2016-08-10
HK1206483A1 (zh) 2016-01-08
DE102013017232A1 (de) 2015-04-23
US10256061B2 (en) 2019-04-09
CN104576193A (zh) 2015-04-29
US20150109092A1 (en) 2015-04-23
HUE029674T2 (en) 2017-03-28
EP2874171B1 (fr) 2016-03-30

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