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
  • H01H1/00—Contacts
  • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
  • H01H1/504—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by thermal means
• • 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
  • H01H11/0006—Apparatus or processes specially adapted for the manufacture of electric switches for converting electric switches
  • H01H11/0031—Apparatus or processes specially adapted for the manufacture of electric switches for converting electric switches for allowing different types or orientation of connections to contacts
• • 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
  • H01H11/0056—Apparatus or processes specially adapted for the manufacture of electric switches comprising a successive blank-stamping, insert-moulding and severing operation
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H81/00—Protective switches in which contacts are normally closed but are repeatedly opened and reclosed as long as a condition causing excess current persists, e.g. for current limiting
  • H01H81/02—Protective switches in which contacts are normally closed but are repeatedly opened and reclosed as long as a condition causing excess current persists, e.g. for current limiting electrothermally operated

Definitions

• the present invention relates to a temperature limiter acting as a switch, which comprises a switch assembly with temperature-dependent switching mechanism and a AnschlußGermantopf for receiving, contacting and sealing the switch assembly.
• the invention further relates to such a connection pot for receiving, contacting and sealing a switch assembly.
• switch assemblies which have a closed housing of the lower housing part and the upper housing part and arranged in the housing temperature-dependent switching mechanism which produces an electrically conductive connection between two provided on the housing, stationary contacts as a function of its temperature.
• Such switch assemblies are often niche products, i. their individual components must be tailored to the particular application, which often leads to the need for costly manufacturing for many different applications.
• the dimensions of the switch assemblies and therefore in particular those of the individual components are so small that the present as bulk material constituents often escape a fully automatic production, so that a semi-automatic or even manual production is required.
• connection technology Another problem with known switch assemblies is the connection technology, because due to the small dimensions on the one hand and the observed upper limits in the mechanical and thermal capacity on the other hand prepare depending on the application soldering, welding or crimping connections problems, so that kept many different connection techniques in stock Need to become.
• the housing receiving the temperature-dependent switching mechanisms are always constructed in two parts in the prior art, wherein the pot-like housing base receives the rear derailleur and is closed by a plate-like upper housing part. If the lower housing part and the upper housing part are both made of metal, an insulating film is provided between the lower housing part and the upper housing part, since in each case a stationary contact for the outer terminal is generally provided both on the housing lower part and on the upper housing part.
• Such a switch is described, for example, in DE 21 21 802 C2.
• the temperature-dependent switching mechanism on a spring washer which is supported with its edge on the lower housing part and centrally carries a movable contact, which presses against a stationary contact, which is provided as a rivet in the upper housing part.
• a conductive connection between the stationary contact on the upper housing part and the lower housing part which serves as a further stationary contact.
• a bimetallic snap disk is slipped, which is free of forces in their low temperature position. Increases the temperature of the known switch assembly beyond the response temperature of the bimetallic snap-action, so this jumps after a certain creep from its convex low-temperature position in its concave high temperature position, where it pushes off with its edge on the housing top, while the movable contact of the stationary contact lifts. Since the upper part of the housing is insulated from the lower part of the housing, in this way the elec- interrupted connection between the two stationary contacts.
• the known switch assembly is used to protect an electrical device from overheating.
• the known switch assembly is brought into thermal contact with the device to be protected, wherein thelessnesssström the electrical device is passed through the switch assembly. If the temperature of the electrical device and therefore of the switch assembly increases beyond the set high temperature, the thermal switch module opens and the power supply to the electrical device is interrupted.
• the upper housing part and / or the lower housing part from insulating material, so that it is possible to dispense with the insulating film.
• the sealing of such switches is then carried out by hot pressing of the housing made of insulating material, wherein it is also known to additionally use an adhesive to the between Closing the upper housing part and the lower housing part forming gap.
• the metal-made housing part is a deep-drawn part having relatively high tolerance variations, which not only has problems in tuning the other components of the switch assembly, but may also show problems in subsequent use.
• the use of deep drawn parts in particular results in a reduction in long term stability and switch point accuracy.
• EP 0 863 527 A2 describes a switch assembly in which an electrical lower housing part is closed by a plastic upper housing part, whose peripheral wall is latched at its edge to the lower housing part, wherein additionally the projecting edge is hot-pressed.
• the temperature-dependent switching mechanism comprises in the usual way a spring washer and a bimetallic snap disk, but it carries no movable contact but a contact bridge, which comes into contact with two stationary contacts, which are provided in the cover part.
• This is a very special, designed for high currents temperature limiter, in which two connection electrodes are provided parallel to each other in the upper housing part.
• EP 0 795 885 A2 also describes a temperature limiter in which two connection electrodes lie in parallel in an upper housing part made of plastic, on which the thermoformed part is designed. formed housing lower part is fixed by crimping tabs.
• a PTC module is provided as a parallel resistor, which serves the self-holding.
• a series resistor is provided between the planar electrode in the upper housing part and the stationary counter contact for the movable contact, which is flowed through with the switch closed by the operating current of the electrical device to be protected and gives the temperature limiter a current sensitivity.
• the operating current of the electrical appliance to be protected which passes through the known temperature limiter, exceeds a permissible value, it heats up the series resistance to such an extent that it heats the temperature limiter, in particular the bimetal snap-action disc, so that it circulates. jumps and breaks the connection to the electrical device. In this way, the electrical device is protected not only from excessive operating temperature but also from excessive current consumption.
• the parallel resistor which now flows from the self-holding current after opening the known temperature limiter, ensures that the known temperature limiter does not close again.
• EP 0 730 285 A1 discloses an insulating housing for accommodating a temperature limiter with a closed housing. This insulating housing with recorded temperature limiter is pushed onto two connecting contacts, which are provided on an electrical device to be protected, whereby the contact between the device and temperature limiter takes place and at the same time so plugged temperature limiter is protected.
• the object of the present invention is to avoid the disadvantages existing in the prior art in the known switches which act as temperature limiters, in particular a more rational production, easier modifiability and better adaptability to a wide variety of operating conditions.
• this object is achieved in that for the first time a connection pot for receiving, contacting and sealing a switch assembly is provided which has a closed housing of the lower housing part and the upper housing part and a temperature-dependent switching mechanism arranged in the housing, depending on its temperature produces an electrically conductive connection between two stationary contacts provided on the housing, wherein a mating contact is provided on the inside of the connection sump for each of the stationary contacts, which contact is in each case connected to an external connection provided on the outside of the connection sump.
• connection pot created according to the invention which on its inside provides the possibility of connection to an already existing temperature limiter.
• the present invention also relates to an acting as a temperature limiter switch with the connection pot according to the invention.
• connection pot according to the invention can be applied either manually or semi-automatically as bulk material or semi-automatically or fully automatically on the band on derailleurs. This allows a great production flexibility and cost optimization.
• the provided on the Ranauertopf external connections can be arbitrarily designed for soldering, welding, crimping, plugging, terminals, etc., so that the connection technology can be optimized independently of the electrical and mechanical properties of the switching mechanism.
• the switch according to the invention also has advantages in connection with the final assembly of the electrical device to be protected, because with the required connection techniques are now lower risks that the rear derailleur is affected, because the pads are outside the Ranfordtopfes, so are separated by this and the housing of the switch assembly of the rear derailleur itself.
• the present invention also relates to a connection pot for receiving, contacting and sealing a switch assembly having a lower housing part and a housing disposed in the lower part temperature-dependent switching mechanism which carries a movable contact and depending on its temperature, an electrically conductive connection between a provided the housing lower part, stationary contact and a counter contact for the movable contact, wherein the inside of the Anschlußschreibf a mating contact for the stationary contact and the mating contact for the movable contact is provided, and the mating contacts are each connected to an externally provided on the Anschlußschreibtopf outer terminal ,
• the present invention relates to acting as a temperature limiter switch with the inventively further provided Randomionattopf and a derailleur incorporated therein.
• the inventor of the present application has recognized that the concept of the terminal pot, in which a closed housing is inserted into a kind of over or over housing, can also be used to receive switch assemblies, to contact and seal, which, so to speak, an upwardly open Housing is used so that the connecting pot must provide the stationary mating contact for the moving contact.
• the Ruthauertopf thus provides the standardized connection technology, and at the same time receives the provided with the temperature-dependent switching mechanism housing lower part, which closes it sealingly, so that neither dust nor paint or the like can penetrate into the interior of the temperature limiter thus formed.
• connection pot is made of insulating material, preferably made of heat-resistant plastic or ceramic, wherein it further preferably has a peripheral wall which is formed so that it form-locking and / or non-positively detects the housing base with inserted switch assembly and is sealingly applied to these.
• the circumferential wall is designed such that it bears laterally against the lower housing part when the switch assembly is inserted and there with this form-fitting and / or non-positively connectable or that the peripheral wall protrudes beyond the lower housing part and is deformable with its edge on the bottom thereof.
• connection plug protruding through the connection plug, which is preferably encapsulated by the connection plug and further preferably is formed integrally with the external connection and mating contact.
• the contact clip is a stamped part, can be easily finished by these measures the Schaundtopfe that the contact bars are provided on the band, so that they can be overmolded with the appropriate plastic to form the Ranauertopfes.
• This not only ensures a firm grip of external connections and mating contacts on the Ranauertopf, the connection between the outer terminals and the mating contacts is also very tight, neither dust nor paint or solder can get along the contact bracket into the interior of the Ranübertopfes.
• the contact clip is resilient at least in the region of the mating contact.
• the contact clip protrude from its external connection with an extension forming an external connection part out of the connection pot.
• connection pot a connecting part is created at the same time during the production of the connection pot, at which point the connection pot can be grasped and manipulated during the further assembly as well as the final assembly on the device to be protected and if necessary can also be fastened to the device.
• connection pot it is preferred if the external connections protrude at the same height from the connection pot.
• This measure has the advantage that can realize a variety of applications, with the connection technology itself can be technically easily realized.
• the lower housing part is a rotating part.
• connection pot has a parallel resistor connected in parallel with the external terminals and / or a series resistor connected electrically in series with one of the external terminals.
• the temperature limiter formed from the connection pot and a switch assembly accommodated therein can be equipped with a self-holding function and / or current sensitivity solely by the design of the connection pot. Regardless of the switching mechanism used, it is possible to set different current sensitivities and self-holding temperatures, so that a high degree of flexibility in adapting to the widest possible range of applications is possible here overall with low production costs.
• the parallel resistor is a PTC module which is arranged in a pocket provided in the terminal cup, into which protrude two electrode surfaces, which are each connected to one of the external terminals.
• the parallel resistor can be inserted easily into the terminal pot, with one and the same terminal pot is provided only by inserting a PTC module with a self-holding function. Without the PTC module, the terminal pot can also be used, but it lacks the self-holding function. To protect the electrode surfaces projecting into the pocket, a plastic plug can then be pushed into the pocket. Furthermore, it is preferred if the series resistor is connected at one end to an external connection and at the other end to the associated countercontact.
• a terminal pot has a current sensitivity or not has no influence on the position and arrangement of the external connections in this construction, so that with the same geometrical arrangements a connection plug can be provided either with or without current sensitivity. Also on the arrangement of the mating contacts inside the connection pot, the equipment with a series resistor has no influence.
• connection pot of which the first is connected to a mating contact and the series resistor, the second to the series resistor and an external connection, and the third to the other mating contact and the other external connection , wherein preferably the first and the third or the second and the third electrode surface are connected to the parallel resistor.
• the switching mechanism presses a spring washer, which bears against the lower housing part with its edge and presses the movable contact carried centrally by it against the associated mating contact, as well a working against the spring washer bimetallic snap disk, which lifts in its high temperature position, the movable contact of the associated mating contact.
• the advantage here is that a temperature-dependent switching mechanism is used in which in the closed state, the bimetallic snap disk is not flowed through by the operating current of the device to be protected, this is taken up solely by the spring washer.
• the bimetallic snap-action disc can rest on the spring washer without forces below its response temperature, so that it is exposed to only minor aging influences, which leads to great long-term stability and switching point accuracy.
• Figure 1 is a schematic sectional view of the new Dolphintopf, in which a switch assembly is used with a closed housing.
• Fig. 2 is a view like Fig. 1, but with a switch assembly with an open housing;
• FIG. 3 shows a plan view of the connection pot from FIG. 2 from below, that is to say into the interior of the connection pot;
• connection pot 4 shows a plan view of electrode surfaces provided on conveyor belts, which are to be overmoulded with a connection pot;
• FIG. 5 shows a sectional view through a connection pot with three electrode surfaces, as seen along the line V-V from FIG. 4.
• Fig. 1 acting as a temperature limiter switch which comprises a cup-shaped connecting pot 10, in which a switch assembly 11 is inserted with a closed housing 12, as is known from DE 21 21 802 C2.
• the housing 12 comprises a housing lower part 14 made of metal as well as a housing upper part 15 made of metal, which enclose a temperature-dependent switching mechanism 16.
• the lower housing part 14 acts as the first stationary contact 17, while on the upper housing part 15, a second stationary contact tionary contact 18 is provided.
• the temperature-dependent switching mechanism 17 ensures an electrically conductive connection between the two stationary contacts 17 and 18, when a certain switching temperature is not exceeded. If the switching temperature is exceeded, the temperature-dependent rear derailleur opens the electrical connection. In order to avoid a short circuit between the lower housing part 14 and the upper housing part 15, an insulating film 19 is provided between them.
• connection pot 10 Inside the connection pot 10, a first mating contact 21 for the stationary contact 17 and a second mating contact 22 for the stationary contact 18 is provided.
• the mating contact 22 is connected to an outer terminal 23, it is integrally formed with this to a contact clip 24.
• the mating contact 21 with an external connection (No. 47 in FIG. 3), which is not visible in FIG. 1, is also formed integrally on a contact clip 25.
• the contact clip 25 extends opposite from its outer terminal of the Ranauertopf 10 as an external extension part 26, which is for manipulating and securing the Anschlußschreibtopfes 10 before, during and after the assembly of the switch assembly 10 and possibly for fixing the temperature limiter so formed on a protected electrical device is used.
• the temperature-dependent switching mechanism 16 includes in a conventional manner a spring washer 27 which is supported with its edge 28 inside of the housing base 14 and centrally carries a movable contact 29, which presses against the stationary contact 17. Centered on the spring washer 27 is a Bimetallic snap-action disc 31 slipped, which is free of forces in the low-temperature position shown in FIG.
• the bimetallic snap disk 31 When the temperature of the switching mechanism 16, in particular the bimetallic snap disk 31 increases beyond its response temperature, it jumps from the shown convex into a concave shape, in which it is supported with its edge on the insulating film 19 and thereby the movable contact 29 pushes away from the stationary contact 17 and so breaks the electrical connection between the stationary contacts 17 and 18.
• the contact between the stationary contact 18 and the mating contact 22 takes place in that it rests resiliently on a bead 32 of the lower housing part 14, with which the upper housing part 15 is held firmly on the lower housing part 14.
• the contact clip 24 is embodied as a one-piece stamped part and, just like the contact clip 25, is overmolded by the connecting plug 10 consisting of insulating material, preferably heat-compressible plastic, so that the contact clips 24 and 25 are received immovably and sealed in the connecting pot 10. Due to their design as a stamped part, the contact bars 24 and 25 at least in the region of the mating contacts 22 and 21 are resilient, so that they provide when inserting the switch assembly 11 in the interior of the Ranauertopfes 10 for a good mechanical and electrical connection.
• the connecting pot 10 For receiving and sealing the switch assembly 11, the connecting pot 10 has a peripheral wall 34, the edge 35th by hot pressing on the bottom 36 of the housing base 14 abuts.
• connection between the lower housing part 14 and wall 34 can also be effected by a latching or by gluing, wherein a combination of several measures can be provided to protect the interior of the connecting pot against the entry of dust, paint, solder and the like.
• a connecting pot 40 is shown in a representation as in FIG. In which a switch assembly 41 has been used, which comprises an upwardly open housing base 42, in which the already known from Fig. 1, temperature-dependent switching mechanism 16 is inserted.
• the lower housing part 42 here forms a stationary contact 43, which is in communication with the mating contact 22, which rests on a peripheral edge 44 of the housing lower part 42.
• a shoulder 45 is provided in the Ranauertopf which rests anywhere on the edge 44 where it is not contacted by the mating contact 22, as shown in particular in FIG 3 can be seen.
• FIG. 3 is a schematic plan view of the terminal cup 40 of FIG. 2 from below with the switch assembly 41 removed.
• FIG. 3 is a schematic plan view of the terminal cup 40 of FIG. 2 from below with the switch assembly 41 removed.
• the outer terminal 23 integrally merges into the mating contact 22, in the shoulder 45 is poured.
• the second contact clip 25 can be seen, which is formed in one piece with the mating contact 21 and the extension part 46 and an external connection 47 to be recognized here.
• the outer terminals 23 and 47 may be formed for a variety of connection techniques, without thereby affecting the arrangement of the mating contacts 21 and 22 and thus the electrical contact and the mechanical recording and sealing of an inserted switch assembly 11 or 41.
• FIG. 4 two punching and conveyor belts 48 and 49 are shown in a schematic representation, on which stampings are provided, which are to be encapsulated in a next step with an indicated at 50 Raufordtopf, which then serves to accommodate the switch assemblies 11 or 41 ,
• the stamped parts form three electrode surfaces 51, 52, 53, of which the electrode surface 51 is completely encapsulated by the connecting pot 50.
• the electrode surface 51 carries centrally in front of the Anschlußschreibf 50 the mating contact 21 and is otherwise connected to a series resistor 54 in the form of a wire resistor, which is used for a current sensitivity of a self-current-sensitive switch assembly, which can be installed in the Stanfordschreibtopf 50.
• the series resistor 54 is connected at its other end to the second electrode surface 52, which protrudes from the connection pot 50 and there transitions into the outer terminal 47.
• the third electrode surface 53 also protrudes out of the connecting pot 50 and forms the outer connection 23 there.
• the electrode surface 53 is further formed in one piece with the mating contact 22.
• a parallel resistor 55 in the form of a PTC block can be provided in a manner to be described.
• the parallel resistor 55 is always electrically parallel to the external terminals 23 and 47.
• connection pot 50 fabricated with the electrode surfaces 51, 52 and 53 of FIG. 4 is shown in FIG. 5 in section along the line V-V of FIG. 4 in FIG. It can be seen that in the connection pot 50, a pocket 56 is provided, in which the parallel resistor 55 is inserted so that it comes into contact with the protruding into the pocket 56 electrode surfaces 51 and 53 in abutment. Furthermore, Fig. 5 still shows the series resistor 55, which is shown cut there in sections.

Landscapes

• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Thermally Actuated Switches (AREA)
• Structure Of Telephone Exchanges (AREA)
• Cookers (AREA)
• Details Of Connecting Devices For Male And Female Coupling (AREA)
• Switch Cases, Indication, And Locking (AREA)
• Coupling Device And Connection With Printed Circuit (AREA)
• Handcart (AREA)
• Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
• Walking Sticks, Umbrellas, And Fans (AREA)
• Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Priority Applications (11)

Applications Claiming Priority (1)

Publications (1)

Family

ID=37496522

Family Applications (1)

Country Status (11)

Cited By (6)

Families Citing this family (4)

Citations (9)

Family Cites Families (1)

• 2006
  • 2006-07-11 SI SI200630847T patent/SI2038905T1/sl unknown
  • 2006-07-11 DK DK06776194.0T patent/DK2038905T3/da active
  • 2006-07-11 PL PL06776194T patent/PL2038905T3/pl unknown
  • 2006-07-11 AT AT06776194T patent/ATE482461T1/de active
  • 2006-07-11 ES ES06776194T patent/ES2350367T3/es active Active
  • 2006-07-11 EP EP06776194A patent/EP2038905B1/de not_active Not-in-force
  • 2006-07-11 CN CN2006800552886A patent/CN101536130B/zh not_active Expired - Fee Related
  • 2006-07-11 WO PCT/EP2006/006766 patent/WO2008006385A1/de active Application Filing
  • 2006-07-11 PT PT06776194T patent/PT2038905E/pt unknown
  • 2006-07-11 DE DE502006007936T patent/DE502006007936D1/de active Active
• 2010
  • 2010-01-11 HK HK10100249.7A patent/HK1132837A1/xx not_active IP Right Cessation

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