EP2854149B1 - Commutateur thermosensible doté d'un disque à action rapide disposé sur le bord - Google Patents

Commutateur thermosensible doté d'un disque à action rapide disposé sur le bord Download PDF

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Publication number
EP2854149B1
EP2854149B1 EP14180471.6A EP14180471A EP2854149B1 EP 2854149 B1 EP2854149 B1 EP 2854149B1 EP 14180471 A EP14180471 A EP 14180471A EP 2854149 B1 EP2854149 B1 EP 2854149B1
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EP
European Patent Office
Prior art keywords
snap
contact
action disc
disc
switch according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
EP14180471.6A
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German (de)
English (en)
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EP2854149A1 (fr
Inventor
Elfriede Klaschewski
Tan Le Nguyen
René Neumann
Michael Zeleny
Michael Kirch
Rainer Mitschele
Hans-Christian Liehr
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
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Thermik Geraetebau GmbH
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Publication of EP2854149A1 publication Critical patent/EP2854149A1/fr
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    • 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
    • H01H2037/5481—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting the bimetallic snap element being mounted on the contact spring
    • 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
    • H01H2037/549—Details of movement transmission between bimetallic snap element and contact

Definitions

  • the present invention relates to a temperature-dependent switch, which has a temperature-dependent switching mechanism and a housing receiving the switching mechanism, which comprises an upper part with a first outer terminal and a lower part with a second outer terminal, wherein on an inner side of the upper part in communication with the first outer terminal first contact surface and inside in the lower part provided with the second outer terminal second contact surface are provided, wherein the switching mechanism comprises a snap disc on which at least one outer contact region and at least one inner contact region are provided, wherein held on the inner contact portion a movable contact part is, which cooperates with the first contact surface, wherein the at least one outer contact region is mechanically and electrically permanently connected to the second contact surface, and wherein the snap disc, the movable contact part in Depends on the temperature of the rear derailleur from the first contact surface lifts.
  • Such a switch is from the DE 10 2011 119 637 A1 known.
  • the known switch has a pot-like lower part, which is closed by a lower part cross-top part.
  • a temperature-dependent switching mechanism is arranged, which carries a movable contact part, which cooperates with a stationary counter-contact, which is arranged on an inner side of the upper part and forms a first contact surface.
  • the derailleur comprises a spring snap-action disc, which carries the movable contact part and presses against the stationary counter contact.
  • the spring snap disc is supported with its edge on the inner bottom of the lower part, which forms the second contact surface. In this position, the two contact surfaces are thus electrically conductively connected to one another via the movable contact part and the spring snap-action disc.
  • the external connections are made via the electrically conductive cover part, which is electrically conductively connected to the stationary mating contact, and the likewise electrically conductive lower part, on the inner bottom of which the spring snap-action disk is supported.
  • a bimetallic snap-action disc is arranged, which rests loosely in the rear derailleur in its low-temperature position.
  • the temperature of the bimetallic snap disk rises to a value above its response temperature, it presses with its center the movable contact part away from the stationary mating contact, for which it bears with its edge against an insulating film provided between the lower part and the upper part.
  • the spring snap-action disc jumps from its one to its other stable geometric configuration.
  • the snap-action disc is a spring snap-action disc against which a bimetal snap-action disc operates
  • the snap-action disc is in the case of the DE 10 2011 119 637 A1 known switch also provided to use only a bimetal snap-action disc, so that the current flows directly through the bimetallic snap disk, which also causes the contact pressure between the movable contact part and the stationary counter contact when the switch is closed.
  • the snap disc is at the out of the DE 10 2011 119 637 A1 Known switch, for example, a circular disc having an inner contact region on which the movable contact member is welded.
  • the inner contact area is separated by a semicircular gap of the snap disk, which extends over an angle of more than 180 °.
  • a connecting web is formed, which serves together with the rest of the edge as a second contact area.
  • This connecting bridge is used for better handling of the rear derailleur during its installation and when inserting into the lower part.
  • the connecting bar then becomes surface welded to the inner bottom of the base to provide a permanent electrical and mechanical connection between the snap disc and the second contact surface inside in the lower part.
  • the second contact region is thus permanently connected in the region of the connecting web and, in the region of the edge, with the switch closed, with the second contact surface.
  • This construction offers the advantage that the material and manufacturing costs for the known temperature-dependent switch are lower than other switches, because as a lower part no rotary member is required, and because can be dispensed with the silvering both the snap disc and the lower part.
  • temperature-dependent switches of the type mentioned above are provided with snap discs, loose with their edge, so freely movable resting on the inner bottom of the base or an inner circumferential shoulder in the lower part, so that the entire edge forms the outer contact area.
  • Such switches are for example from the DE 43 45 350 A1 known.
  • the snap disc When jumping from one to the other geometric configuration, the snap disc stretches until its edge is lifted from the bottom of the base or the peripheral edge.
  • the spring-snap disc is at the out of the DE 43 45 350 A1 well-known switch is supported on a circumferential shoulder, it can when snapping with its center through the shoulder and its resting on the shoulder edge "through” on the lower ground to move, so snap through the edge while at the same time mechanically extending radially outward, which allows snapping without overcoming external mechanical counter forces ,
  • the known temperature-dependent switches are used to protect an electrical device from excessive temperature.
  • the supply current for the device to be protected is passed through the temperature-dependent switch, wherein the switch is thermally coupled to the device to be protected.
  • the respective switching mechanism At a specified by the transition temperature of the bimetallic snap disc response temperature the respective switching mechanism then opens the circuit by the movable contact part is lifted from the stationary counter contact.
  • the switch does not close again after cooling the device, it is also known parallel to the temperature-dependent switching mechanism to provide a self-holding resistor, preferably a PTC resistor, which is electrically short-circuited at the closed temperature-dependent switching mechanism is.
  • a self-holding resistor preferably a PTC resistor
  • the self-holding resistor takes over a portion of the current flowing so far and heats up enough to generate enough heat to keep the bimetal snap-action disc at a temperature above the response temperature. This process is called latching, it prevents a temperature-dependent switch closes uncontrollably again when the device to be protected cools down again.
  • switches While self-heating of the snap-action disk by the flowing current is often undesirable in such temperature-dependent switches, switches are also known in which a series resistor is additionally provided, which heats up in a defined manner by the flowing current of the device to be protected. If the current flow is too high, this series resistance heats up to such an extent that the transition temperature of the bimetallic snap disk is reached. In addition to monitoring the temperature of the device to be protected, the flowing current can be monitored in this way, the switch then has a defined current dependence.
  • switches have proven sufficiently in everyday use. If the switches do not open at the zero crossing of an AC supply voltage or DC applied, arcs and sparks form during lifting of the movable contact part of the stationary counter contact and / or lifting the edge of the power snap disc of the second contact surface.
  • contact erosion In addition to the contact erosion on the stationary counter contact and the movable contact part, contact erosion also occurs at the edge of the snap disks, which carry the movable contact part and produce the electrical connection to the second contact surface with its edge as outer contact region. in the Over the course of the switching cycles, this leads to damage to the edge of the snap discs also increase the volume resistance.
  • the DE 977 187 A suggests, therefore, in a temperature-dependent switching mechanism, which has only a bimetallic snap disk to relieve them from the current flow, that the movable contact part is connected via a sun-wheeled metal spider to the housing of the switch. In this way, the current no longer flows only through the bimetallic snap disk but mainly through the metal spider.
  • a similar approach chooses the AT 256 225 A in which on the remote from the stationary mating contact surface of the bimetallic snap disk, a copper lead is provided, which connects the movable contact part with the housing.
  • the copper lead and the metal spider do not contribute to the mechanical function of the switch, on the contrary they must be moved by the bimetallic snap disk when opening and closing the switch, so they represent an additional mechanical load for them. This leads to fatigue and concomitantly not only to an undesirable shift in the switching temperature but also to a deteriorated opening and closing behavior, which greatly limits the life.
  • the DE 1 180 446 shows a comparable temperature-dependent switch with a bimetallic disc on which rests a slotted guide plate.
  • This slotted Leitteller can with wheel-like S-spokes or according to a Leitspirale be equipped.
  • the Leitteller serves only the power supply and is designed as a metal spider.
  • the baffle does not have the characteristics of a snap-action disc, because it should not affect the mechanical properties of the bimetallic disc.
  • the EP 0 678 891 A1 shows a temperature-dependent switch with a bimetallic snap disk and a spring snap disc, which is equipped with four radial slots to increase the electrical resistance between the outer periphery of the disc and the inner edge region and thus the total resistance of the disc. Furthermore, the slots serve as ventilation openings.
  • the spring snap-action disc is divided by the slots into four quadrants, which in themselves are rigid and non-compliant.
  • the WO 99/01879 A shows a bimetallic snap-action disc, which is soldered on a substrate via three legs extending outwards and downwards at about 45 ° away from the bimetallic disc.
  • the legs must not be unstable, because they should provide the counterforce, so that the snap disc can buckle back and forth.
  • the present invention has the object to increase in a structurally simple way the life and / or the switching capacity of the known temperature-dependent switch.
  • this object is achieved in that the snap disk between the at least one or each outer contact region and the at least one or each inner contact region has at least one compensating section, which is formed yielding in the radial direction.
  • the or each permanently on the second contact surface resting outer contact area is understood in the invention that all the areas of the snap-action disc, which are used for the electrical connection to the second contact surface, permanently rest on this, so for example by pressing , Gluing or welding are connected to it, and which do not stand out when opening the switch from the second contact surface.
  • the snap disk is equipped with a plurality of connecting webs along their Circumference arranged distributed and are each welded to the bottom of the base.
  • the connecting webs of which, for example, three are arranged offset by 120 °, then make the only electrical and mechanical connection between the snap disk and the second contact surface ago.
  • the remaining edge of the snap-action disc is without mechanical and electrical contact.
  • the snap disc is symmetrically fixed to the second contact surface, so that it mechanically shows a uniform switching behavior.
  • the snap disc must overcome external forces when snapping.
  • each outer contact area is also welded, glued or clamped itself. It is only important that each outer contact area rests permanently on the second contact surface. This can be achieved, for example, if six circumferentially equally distributed connecting webs are provided, of which only every second one is connected to the second contact surface. The other connecting webs are thus permanently pressed firmly on the second contact surface, so remain connected to her even when the switch opens.
  • Snap discs of the type used here are slightly curved discs with slightly raised towards the edge center.
  • the domes are generally round, circular, oval or similarly rounded.
  • Bimetal domes have a high temperature position in which they are convex in one view while appearing concave in the same view when in their low temperature position.
  • spring snap disks have two mechanically stable geometric positions or configurations which, depending on the view, appear as convex or concave.
  • Snaps snap from their one configuration to the other by moving their center, as it were, through the edge, which tends to make a radial evasive movement.
  • edge When the edge is firmly clamped, snapping over is done by internal deformation while overcoming internal forces. These internal deformations and the resulting internal forces lead to mechanical stress and aging of the snap discs, which limits the life of the switches equipped with it.
  • a "compensating section" of the snap-action disc is thus understood to mean an area which is, so to speak, designed to be yielding or resilient in the radial direction.
  • a compensating portion of the snap-action disc permits radial evasion or expansion movement within the snap-action disc, although the outer contact portion can not move or move radially outwardly relative to the second contact surface.
  • This property of a compensation section results from its structure, ie its geometry and / or connection with the snap-action disk, the outer and / or the inner contact region.
  • a compensation section can therefore also be referred to as an expansion structure.
  • the outer contact region may be formed, for example, as an outer ring, which is connected via a plurality of webs with the central region of the snap disk, which is followed radially inwardly by the inner contact region.
  • the outer contact area is clamped onto the second contact surface. If the inner contact area of the snap-action disk, which carries the movable contact part, now snaps together with the middle area, then the webs deform temporarily by performing an evasive movement and / or being resiliently compressed. So they make a compensatory movement, which relieves the central area of the snap disc of the mechanical stress and thus slows down the aging processes.
  • a comparable compensation structure may alternatively or additionally also be provided between the inner contact region and the central region of the snap-action disc.
  • the structurally simple measure of the compensation sections ensures that the snap disk does not have to overcome any external forces when snapped over, because the snap disk makes a compensating movement in the radial direction between the outer contact area and the inner contact area, because the compensation section is designed to be resilient, for example.
  • the snap-action disc can thus expand radially internally when the switch is opened and closed, without having to overcome external forces.
  • the bimetallic snap disk as with the switches from the DE 977 187 A or the AT 256 225 A Assigning a current-carrying connection, which connects the movable contact part with the second contact surface, the contact erosion is indeed reduced, but the bimetallic snap disk is mechanically overloaded because it must move the copper lead or metal spider with.
  • the advantage of the compensating sections results, in particular, in connection with snap-action disks which are mechanically fixed at their edge at least to the extent that they are symmetrically and permanently connected both mechanically and electrically to the second contact surface so that no contact erosion can take place at the edge.
  • the snap-action disc itself may be the bimetallic snap-action disc, it is preferred if the snap-action disc is a spring-loaded snap-action disc associated with a bimetallic snap-action disc held on the movable contact member.
  • the advantage here is that the bimetallic snap disk neither has to exert the mechanical closing pressure nor conducts the operating current of the device to be protected.
  • bimetallic snap disk is held captive with play on the contact part.
  • the rear derailleur can be mounted and stored as a separate Halbfertigteil, with a separate examination of the rear derailleur is possible because the bimetallic snap disk is held captive, but has corresponding lots so that it can deform unhindered between its low temperature position and high temperature position.
  • the bimetallic snap disk can be easily mounted and fixed on the movable contact part without the bimetallic snap disk being exposed to mechanical stresses in its centric region.
  • the bimetallic snap disk is arranged between the spring snap disk and the first contact surface.
  • the bimetallic disc is, so to speak, above the spring snap-action disc, so that there is space below the spring snap-action disc to connect the or each outer contact region to the second contact surface.
  • the bimetallic snap disk is arranged on the side facing away from the first contact surface side of the spring snap disk.
  • the bimetallic disc is, so to speak, below the spring snap-action disc, so that the spring snap-action disc is above the bimetallic snap disk and shields them from flying sparks, when opening the switch between the stationary mating contact and the movable contact part can arise.
  • this protective function of the spring snap-action disc has a particularly good effect when the spring snap-action disc is permanently connected to the second contact surface at the outer contact region.
  • each outer contact region is permanently connected by clamping with the second contact surface, wherein preferably the movable contact part is clamped to the at least one inner contact region.
  • the or each compensation section is resilient in the radial direction, preferably the or each outer and / or inner contact area is formed on a radially extending web, which is preferably connected exclusively via a compensation section with a central region of the snap disk.
  • the advantage here is that the compensatory movements when snapped through the structure can be predetermined in a structurally simple manner, for example, by the compensating section being formed as a high-arched section between the outer or inner contact region and the central region of the snap-action disc.
  • the outer and / or inner contact region is formed as a self-contained ring, which is connected via a compensation portion with a central region of the snap-action disc, wherein the compensation portion at least one outer, circumferentially extending gap and at least one inner, in the circumferential direction extending gap, wherein the two gaps partially overlap in the circumferential direction, and preferably the two gaps are connected by an inwardly extending gap with each other, more preferably at least three outer and three inner column are provided.
  • the balancing portion at the outer contact portion when the inner gap extends over an angular range which is at most half the angular range over which the outer gap extends, and is preferable for the balancing portion at the inner contact portion when the inner gap extends over an angular range which is at most as large as the angular range over which the outer gap extends.
  • the new switch can be equipped with a parallel resistor for latching and / or with a series resistor for defined current dependence.
  • Fig. 1 is a schematic side view of a circular in plan view of temperature-dependent switch 10 is shown, which has a temperature-dependent switching mechanism 11 which is arranged in a housing 12.
  • the housing 12 comprises a pot-like lower part 14, which is closed by an upper part 15.
  • a circumferential, stepped shoulder 16 is provided, on which a spacer ring 17 is arranged, on which the upper part 15 rests with intermediate storage of an insulating film 18.
  • Lower part 14 and upper part 15 are made in the embodiment shown from electrically conductive material, which is why the insulating film 18 is provided, the lower part 14 and top 15 electrically insulated from each other.
  • a further insulating cover 22 is provided, while on an inner side 23 of the upper part 15, a stationary counter-contact 24 is arranged.
  • the rear derailleur 11 comprises a spring snap-action disc 26, which is permanently clamped with its edge 27 between the spacer ring 17 and the shoulder 16, so that it produces a permanent electrically conductive connection there.
  • a bimetal snap-action disc 28 is provided below the spring snap-action disc 26, that is on its side facing away from the stationary counter-contact 24 side, which has two geometric temperature positions, the in Fig. 1 shown low-temperature position and a high-temperature position, not shown.
  • the bimetallic snap disk 28 lies with its edge 29 freely above a wedge-shaped, circumferential shoulder 31, which is formed on an inner bottom 32 of the lower part 14.
  • the lower part 14 also has an outer bottom 33, which together with the outer side 21 of the upper part 15 of the outer terminal of the switch 10 Fig. 1 serves.
  • the bimetallic snap disk 28 is supported on a peripheral shoulder 34 of the contact part 25 with its center 35.
  • the spring snap-action disc 26 is permanently connected to the inner contact region 36 in its center with the movable contact part 25, on which a pin 37, which projects through the two snap discs 26 and 28, a ring 37 is pressed on which also the shoulder 34th is trained.
  • the stationary mating contact 24 forms a first contact surface 38, which cooperates with the movable contact part 25 and via this with the inner contact region 36 of the spring snap-action disc 26 and is connected via the upper part 15 with the outer side 21, ie the first outer connection.
  • the shoulder 16 forms a second contact surface 39 for an outer contact region 41 on the edge 27 of the spring snap-action disc 26, which is mechanically and electrically permanently connected to the second contact surface 39, via the lower part 14 with its outer side 33, ie the second outer terminal connected is.
  • the spring snap-action disc 26 Radially inside the outer contact region 41, the spring snap-action disc 26 then has a compensation section 42, which connects the outer contact region 41 to a central region 43 of the spring snap-action disc 26, which is connected to the inner contact region 36 via a further compensation section 44.
  • inner and outer contact region 36 and 41 are firmly clamped by a respective clamping, so permanently connected mechanically and electrically, so that it can not come to the formation of sparks and / or arcs in these areas, so that contact erosion is avoided.
  • the radially resilient compensation sections 42 and 44 are provided, as will be discussed below.
  • the bimetallic snap disk 28 presses with its center 35 on the shoulder 34 and thus lifts the movable contact part 25 from the stationary counter contact 24.
  • the spring snap-action disc 26 may be a bistable spring washer, which is geometrically stable even in the open position of the switch, so that the movable contact member 25 does not come back into contact with the stationary counter contact 24 even if the edge 29 of the bimetallic snap disk 28 no longer presses against the edge 27 of the spring snap-action disc 26.
  • the temperature inside the switch 10 is lowered again, then moves the edge 29 of the bimetallic snap disk 26 down and comes into abutment with the wedge-shaped shoulder 31. With its center 35, the bimetallic snap disk 26 then presses from below against the spring snap-action disc 26 and pushes them back into their other geometrically stable position, in accordance with Fig. 1 the movable contact member 25 presses against the stationary mating contact 24.
  • the rear derailleur 11 in addition to the bimetallic snap disk 28, the current-conducting spring snap disk 26, wherein in the switching mechanism 11, only the bimetallic snap disk 28 may be provided, which would then be clamped with its edge 29 under the rotating ring 17, and the contact portions 36 and 41 and the balancing sections 42 and 44 would have.
  • Fig. 2 is an enlarged section of the switch 10 off Fig. 1 shown in the shoulder 16. It can be seen that the spacer ring 17 presses the outer contact region 41 on the second contact surface 39, which is formed as a lowered step on the shoulder 16. Between the spacer ring 17 and shoulder 16, a gap 45 is exaggerated in size.
  • the equalizing portion 42 is formed between the middle portion 43 and the outer contact portion 41, which are approximately at the same height, as a high-arched portion.
  • the central portion 43 moves along the arrow 46 down and the balancing portion 42 is temporarily compressed radially.
  • the central region 43 may thus extend radially outward along the arrow 47 temporarily.
  • Fig. 3 is a schematic plan view of a first embodiment of the spring snap-action disc 26 according to Fig. 2 shows.
  • the spring snap-action disc 26 has in the embodiment of Fig. 4 a total of three webs 53, the equally distributed at 120 ° to each other around the edge 27 are arranged distributed around. Each web 53 has, radially outward, the outer contact region 41, which extends radially outward beyond the edge 27.
  • the web is separated at its sides 54 and 55 by a gap or incision 56 and 57 of the spring snap-action disc 26 so that it is connected only to the central region 43 via the compensating portion 42.
  • the spring snap-action disc 26 is clamped only on the three outer contact areas 41 on the second contact surface 39.
  • the three compensating portions 42 perform a compensating movement, as determined by the Fig. 2 has been described, so that the central region 43 can expand radially.
  • the spring snap-action disc 26 In its center, the spring snap-action disc 26 has a center hole 58, through which the movable contact part 25 projects with its pin 30.
  • Three webs 59 protrude radially inwardly into the center hole 58 and each have an inner contact region 36 radially inward.
  • Each web 59 is separated at its sides 61 and 62 by a gap or indentation 63 and 64, respectively, from the spring snap-action disc 26 so that it is connected to the central region 43 only via the compensating section 44.
  • the three webs 59 are equally distributed at 120 ° to each other, wherein each web 53 is radially opposite a web 59.
  • center region 43 can also extend radially inwardly when the spring snap-action disc 26 snaps around, which also reduces the mechanical loads during snap-fitting.
  • the spring snap-action disc 26 may also be equipped only with the webs 53 or only with the webs 59, wherein more than three webs 53 and / or 59 may be provided.
  • the compensating sections 42 and 44 can each be designed in this case as it is in Fig. 2 is shown.
  • Fig. 4 a further embodiment of the spring snap-action disc 26 'is shown, in which the inner webs 59 are formed as in Fig. 3 , The outer webs 53 are as in Fig. 3 educated.
  • the outer contact areas 41 are connected by three ring sections 65 circumferentially to a self-contained ring 66, which serves as an outer contact area 41 in total.
  • the inner contact portions 36 are connected by three ring portions 67 to a self-contained ring 68, which serves as an inner contact region 36 in total
  • the ring 66 is connected only to the central region 43 of the spring snap-action disc 26 via the three webs 53 and their compensation sections 42. Accordingly, the ring 68 is connected only to the central region 43 of the spring snap-action disc 26 via the three webs 59 and their compensation sections 44.
  • Fig. 5 shows a spring snap-action disc 26 ", in which also a circumferential ring 66 is provided as an outer contact region 41, which is connected via three angled webs with the central region 43 of the spring snap-action disc 26". Each angled web extends with its first portion 69 radially inwardly of the ring 66 and subsequently with its longer portion 70 in the circumferential direction.
  • a comparable structure is also found in the center of the spring snap-action disc 26, where the inner contact region 36 is formed as a ring 74 which is connected via three angled webs to the central region 43.
  • the three webs each have a first portion 75 extending radially from the ring 74 to the outside and an adjoining portion 76 extending in the circumferential direction.
  • the sections 69, 70 form with the columns 71, 72, 73 as well as the sections 75, 76 with the columns 77, 78, 79 a balancing section.
  • the outer gaps 71 cover an angle range 81 of 110 °, while the inner gaps 72 cover an angle range 82 of 35 °, which is therefore less than half the angle range 81.
  • the outer gaps 77 cover an angle range 83 of 50 °
  • the inner gaps 78 cover an angle range 84 of 40 °, which is thus at most as large as the angular range 83.

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Thermally Actuated Switches (AREA)

Claims (13)

  1. Commutateur dépendant de la température, qui présente un mécanisme de commutation (11) dépendant de la température et un boîtier (12) recevant le mécanisme de commutation (11), qui comprend une partie supérieure (14) pourvue d'un premier raccord extérieur (21) ainsi qu'une partie inférieure (15) pourvue d'un deuxième raccord extérieur (33), dans lequel une première surface de contact (38) reliée au premier raccord extérieur (21) est prévue au niveau d'un côté intérieur (23) de la partie supérieure (14) et une deuxième surface de contact (39) reliée au deuxième raccord extérieur (33) est prévue à l'intérieur dans la partie inférieure (15), dans lequel le mécanisme de commutation (11) comprend un disque à déclic (26), au niveau duquel sont prévues au moins une zone de contact extérieure (41) et au moins une zone de contact intérieure (36), dans lequel une partie de contact (25) mobile est maintenue au niveau de la zone de contact intérieure (36), laquelle partie de contact coopère avec la première surface de contact (38), dans lequel l'au moins une zone de contact extérieure (41) est reliée de manière mécanique et électrique durablement à la deuxième surface de contact (39), et dans lequel le disque à déclic (26) soulève de la première surface de contact (38) la partie de contact (25) mobile en fonction de la température du mécanisme de commutation (11),
    caractérisé en ce que le disque à déclic (26) présente, entre l'au moins une ou chaque zone de contact extérieure (41) et l'au moins une ou chaque zone de contact intérieure (36), au moins une section de compensation (42, 44), qui est réalisée de manière flexible dans la direction radiale.
  2. Commutateur selon la revendication 1, caractérisé en ce que la zone de contact extérieure ou chaque zone de contact extérieure (41) est reliée par serrage de manière durable à la deuxième surface de contact (39).
  3. Commutateur selon la revendication 1 ou 2, caractérisé en ce que la section de compensation ou chaque section de compensation (42, 44) est réalisée sur ressorts dans la direction radiale.
  4. Commutateur selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la zone de contact ou chaque zone de contact (36, 41) est réalisée au niveau d'une entretoise (59, 53) s'étendant de manière radiale, laquelle est reliée par l'intermédiaire d'une section de compensation (44, 42) à une zone centrale (43) du disque à déclic (26).
  5. Commutateur selon la revendication 4, caractérisé en ce que la section de compensation (44, 42) est réalisée sous la forme d'une section hautement bombée entre la zone de contact (36, 41) et la zone centrale (43) du disque à déclic (26).
  6. Commutateur selon la revendication 4 ou 5, caractérisé en ce que l'entretoise (59, 53) est reliée, exclusivement par l'intermédiaire de la section de compensation (44, 42), à la zone centrale (43) du disque à déclic (26).
  7. Commutateur selon l'une quelconque des revendications 4 à 6, caractérisé en ce qu'au moins trois entretoises (59, 53) sont prévues, et les zones de contact (36, 41) des entretoises (59, 53) sont reliées les unes aux autres en une bague (68, 66).
  8. Commutateur selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la zone de contact extérieure (41) est réalisée sous la forme d'une bague (66) fermée, qui est reliée par l'intermédiaire d'une section de compensation à une zone centrale (43) du disque à déclic (26), dans lequel la section de compensation présente au moins une fente extérieure (71) s'étendant dans la direction périphérique et au moins une fente intérieure (72) s'étendant dans la direction périphérique, dans lequel les deux fentes (71, 72) se chevauchent en partie dans la direction périphérique.
  9. Commutateur selon la revendication 8, caractérisé en ce que les deux fentes (71, 72) sont reliées l'une à l'autre par une fente (73) s'étendant de l'intérieur vers l'extérieur.
  10. Commutateur selon la revendication 8 ou 9, caractérisé en ce que la fente intérieure (72) s'étend sur une plage angulaire (82), qui est au maximum égale à la moitié de la plage angulaire (81), sur laquelle s'étend la fente extérieure (71).
  11. Commutateur selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la zone de contact intérieure (36) est réalisée sous la forme d'une bague (74) fermée, qui est reliée par l'intermédiaire d'une section de compensation à une zone centrale (43) du disque à déclic (26), dans lequel la section de compensation présente au moins une fente extérieure (77) s'étendant dans la direction périphérique et au moins une fente intérieure (78) s'étendant dans la direction périphérique, dans lequel les deux fentes (77, 78) se chevauchent en partie dans la direction périphérique.
  12. Commutateur selon la revendication 11, caractérisé en ce que les deux fentes (77, 78) sont reliées l'une à l'autre par une fente (79) s'étendant de l'intérieur vers l'extérieur.
  13. Commutateur selon la revendication 11 ou 12, caractérisé en ce que la fente intérieure (78) s'étend sur une plage angulaire (84), qui est au maximum aussi grande que la plage angulaire (83), sur laquelle s'étend la fente extérieure (77).
EP14180471.6A 2013-08-27 2014-08-11 Commutateur thermosensible doté d'un disque à action rapide disposé sur le bord Active EP2854149B1 (fr)

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DE102013109291.8A DE102013109291A1 (de) 2013-08-27 2013-08-27 Temperaturabhängiger Schalter mit am Rand eingeklemmter Schnappscheibe

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US (1) US20150061818A1 (fr)
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CN (1) CN104425182B (fr)
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DK (1) DK2854149T3 (fr)

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DE102014108518A1 (de) * 2014-06-17 2015-12-17 Thermik Gerätebau GmbH Temperaturabhängiger Schalter mit Distanzring
DE102015114248B4 (de) * 2015-08-27 2019-01-17 Marcel P. HOFSAESS Temperaturabhängiger Schalter mit Schneidgrat
DE102019112074B4 (de) * 2019-05-09 2020-12-17 Marcel P. HOFSAESS Temperaturabhängiger Schalter
DE102019125453A1 (de) * 2019-09-20 2021-03-25 Marcel P. HOFSAESS Temperaturabhängiger Schalter
DE102019125450B4 (de) * 2019-09-20 2021-04-08 Marcel P. HOFSAESS Temperaturabhängiger Schalter
DE102019128367B4 (de) * 2019-10-21 2021-06-10 Marcel P. HOFSAESS Temperaturabhängiger schalter

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Publication number Publication date
CN104425182B (zh) 2018-02-13
CN104425182A (zh) 2015-03-18
DK2854149T3 (en) 2018-06-25
EP2854149A1 (fr) 2015-04-01
DE102013109291A1 (de) 2015-03-05
US20150061818A1 (en) 2015-03-05

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