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EP2332161B1 - Disjoncteur miniature - Google Patents

Disjoncteur miniature Download PDF

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Publication number
EP2332161B1
EP2332161B1 EP09777595.1A EP09777595A EP2332161B1 EP 2332161 B1 EP2332161 B1 EP 2332161B1 EP 09777595 A EP09777595 A EP 09777595A EP 2332161 B1 EP2332161 B1 EP 2332161B1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
contact
push button
housing
tappet
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.)
Active
Application number
EP09777595.1A
Other languages
German (de)
English (en)
Other versions
EP2332161A1 (fr
Inventor
Wolfgang Ullermann
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.)
Ellenberger and Poensgen GmbH
Original Assignee
Ellenberger and Poensgen 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 Ellenberger and Poensgen GmbH filed Critical Ellenberger and Poensgen GmbH
Priority to EP14002033.0A priority Critical patent/EP2779196B1/fr
Priority to PL14002033T priority patent/PL2779196T3/pl
Priority to PL09777595T priority patent/PL2332161T3/pl
Publication of EP2332161A1 publication Critical patent/EP2332161A1/fr
Application granted granted Critical
Publication of EP2332161B1 publication Critical patent/EP2332161B1/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
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/22—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electrothermal release and no other automatic release
    • H01H73/30—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electrothermal release and no other automatic release reset by push-button, pull-knob or slide
    • H01H73/303—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electrothermal release and no other automatic release reset by push-button, pull-knob or slide with an insulating body insertable between the contacts when released by a bimetal element
    • 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
    • H01H37/5409—Bistable switches; Resetting means
    • 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
    • H01H37/5418—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting using cantilevered bimetallic snap elements
    • 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
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/14—Electrothermal mechanisms
    • H01H71/16—Electrothermal mechanisms with bimetal element
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/08—Terminals; Connections
    • H01H2071/088—Terminals for switching devices which make the devices interchangeable, e.g. with fuses
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49105—Switch making

Definitions

  • the invention relates to a miniature circuit breaker, as used for example in the context of an automotive electrical system.
  • Such circuit breakers are increasingly being used as a replacement for the automotive industry earlier standard flat fuses.
  • Flachsteckschschen used in the automotive industry are standardized in terms of their geometric dimensions.
  • the relevant norm in Germany is DIN 72581-3.
  • ISO 8820 is currently being prepared in this area. In the latter standard, three sizes are defined for the flat-type fuses, namely "type C (medium)”, “type E (high current)” and “type F (miniature)”.
  • Circuit breakers of the above-mentioned type are usually based on the standards developed for flat-type fuses in order to ensure the compatibility of the circuit breakers with plug-in sockets for blade-type fuses.
  • a miniature circuit breaker is generally referred to here a circuit breaker, which is compatible in terms of its geometric dimensions with a socket for a Flachsteckêt, in particular a Flachsteck mixer the (smallest) type F according to ISO 8820.
  • Such circuit breakers are sold, for example, by the company Cooper Bussmann under the name "Series 21 X mini circuit breaker".
  • Circuit breakers of the abovementioned type usually comprise as tripping mechanism a bimetallic snap-action disc, which changes suddenly and reversibly between two curvature positions as a function of the temperature.
  • the Bimetallschnappulation is firmly connected in one or more attachment points with a Bimetallkingarm.
  • the remote from the attachment points or the free end of the Bimetallschnappulation forms or carries a moving contact.
  • the Bimetallschnappulation is arranged such that the moving contact is applied to a corresponding fixed contact of a FestWalletarms, as long as the temperature prevailing in the circuit breaker temperature falls below a predetermined building temperature threshold. In this case, an electrically conductive path between the bimetallic contact and the fixed contact is thus closed via the Bimetallschnappulation.
  • the Bimetallschnappulation abruptly changes its shape, whereby the moving contact lifted from the fixed contact and the current path is thus separated.
  • circuit breakers In simple circuit breakers of the type mentioned above, the closure or interruption of the current path takes place exclusively by the temperature-induced change in shape of the bimetallic snap disk.
  • Such circuit breakers work in persistent overload condition, so for example in the case of a persistent even after the first triggering of the circuit breaker intermittently, especially since the circuit breaker gradually cools after tripping, causing the Bimetallschnappulation closes the circuit again, and thus the tripping cycle of the circuit breaker again abuts.
  • separation mechanisms are for relatively large circuit breaker (eg compatible with ISO 8820 type C), for example in DE 35 26 785 C1 or EP 1 278 226 B1 described.
  • a generic circuit breaker is off US 6 144 541 A known.
  • the circuit breaker comprises a housing having a housing base of insulating material and a cup-like housing cover placed on the housing base .
  • In the housing base are two elongated and flat contact arms partially and in terms their longitudinal direction parallel to each other embedded.
  • a fixed contact is arranged at an inner end of a first of the contact arms.
  • a bimetallic snap-action disc having a free-end forming or supporting end is mounted in a mounting point such that the attachment point and the moving contact are on an axis parallel to the longitudinal direction of the contact arms.
  • the invention has for its object to provide a particularly suitable for miniaturization, especially easy to manufacture and functionally reliable circuit breaker.
  • the circuit breaker comprises a housing which is formed from a housing base made of insulating material as well as from an attachable to the housing base or attached housing cover.
  • the housing cover is in this case pot-shaped and thus - at least substantially - closed on all of the housing base facing away from five sides.
  • two elongate and flat contact arms are partially embedded and parallel to each other with respect to their longitudinal direction.
  • a fixed contact is arranged at an inner end of a first of the two contact arms.
  • a fastening point is arranged, on which a Bimetallschnapplicate is mounted, wherein the Bimetallschnappulation forms a moving contact in the region of its free end (or a separate moving contact) carries.
  • the Bimetallschnappulation is in this case arranged in the housing, that the attachment point and the moving contact lie on a common, parallel to the longitudinal extent of the contact arms axis.
  • the housing cover is a one-piece part, which also consists of insulating material, in particular a thermoplastic material.
  • the reliability of the circuit breaker is increased, especially a leakage of current from the housing in case of faulty contact of the housing with an electrically conductive component of the protective circuit and thus the risk of short circuits and current loops on the housing is safely avoided .
  • the completely made of insulating material housing - in contrast to a wholly or partially metallic housing - a very low thermal conductivity, whereby an improved response of the circuit breaker is achieved. Specifically, a relatively low heat loss must be generated in the circuit breaker due to the reduced heat dissipation in case of overload in order to bring this when using a conventional bimetallic snap-action. In addition, the cooling of the circuit breaker is slowed down.
  • a simple intermittent circuit breaker of the type according to the invention therefore has - under the same environmental conditions - a significantly longer trip time than a comparable circuit breaker with metallic housing. The life of the circuit breaker is thereby prolonged and the risk of malfunction due to a prematurely worn bimetallic snap disk is reduced.
  • the inner end of the second contact arm (hereinafter referred to as BimetallKINGarm) free from the housing base, so that the attachment point of the Bimetallschnappulation is spaced from the housing base.
  • This distance is in an advantageous embodiment at least 2 mm, preferably between 3 mm and 5 mm, and in particular about 4.5 mm (specifically, for example, 4.65 mm).
  • the freestanding design of the Bimetallkingarms allows the use of a particularly simple, precise and jam-free mounting method in which the snap-mounted first fixed without mechanical bias against the fixed contact on the Bimetalletterarm, and the bias of Bimetallschnappulation against the fixed contact only in a subsequent adjustment step by bending the inner end of the bimetal contact arm is adjusted.
  • the bend is advantageously carried out about an axis extending transversely to the longitudinal direction of the contact arms.
  • the inner end of the second contact arm between the housing base and the attachment point of the Bimetallschnappulation is advantageously slightly bent by a transverse to the longitudinal direction of the contact arms axis as a result of the adjustment. It thus extends obliquely to the plane defined by the adjacent region of the Bimetallkingarms.
  • the adjusting method described above is considered as an independent invention.
  • each contact arm for forming a plug contact from the housing socket after led out the outside.
  • Analogous to Flachsteckêtracracschracracracracen the two plug contacts are spaced offset parallel in a common plane.
  • the common axis, on the present invention, the attachment point of the Bimetallschnappulation and the moving contact are expediently approximately centrally between the plug contacts.
  • the contact arms are preferably embedded in a form-fitting manner in the housing base.
  • the contact arms are in particular encapsulated with the material of the housing base.
  • this is provided with a separating element for the electrical separation of the moving contact and the fixed contact.
  • This separating element comprises a separating plate made of insulating material and a push button which protrudes from the housing cover in the assembled state.
  • the partition plate is displaceably guided between a separating position in which the separating plate rests in an insulating manner between the moving contact and the fixed contact, and a release position in which the separating plate releases a contacting of the moving contact and the fixed contact.
  • the separating element is in this case biased by a spring in the direction of the separating position, so that the separating plate automatically assumes the disconnected position when the circuit breaker is triggered.
  • the push button is designed in such a way that the separating plate can be returned to the release position by manual pressure on it.
  • the separating element is in particular a one-piece plastic injection-molded part. An extended position of the push button corresponds in this case always with the disconnected position of the partition plate, while a depressed position of the push button corresponds to the release position.
  • the separator biasing spring is expediently a helical compression spring.
  • This helical compression spring is advantageously placed on a guide pin made of metal, which extends at least substantially over the entire spring length.
  • the guide pin protrudes through the spring into a guide bore of the separating element, in particular the push button, into it, wherein in particular the cross section of the guide bore is approximately adapted to the cross section of the guide dome.
  • the guide pin thus advantageously also serves for direct guidance of the separating element.
  • the separating element is additionally or alternatively, in particular in the region of the separating plate, expediently (also) on a mecanicsgrat the other contact arm, in particular so the Bimetalltakingarms out.
  • the separating element advantageously has a fork-like guide contour, which engages around the guide ridge in a form-fitting manner.
  • the "threading" the guide contour on the senatorsgrat is thereby expediently simplified in that the guide contour has two longitudinally offset guide tines. This embodiment also simplifies the production of the separating element by injection molding.
  • the Stanfordsgrat may alternatively be formed on the base.
  • the push button and the partition plate are not integral, but designed as separate, mutually displaced guided components.
  • the push button in this case has a driver, which is guided so that it moves the separating plate in the release position upon depression of the push button from its extended position to its depressed position, but that when the depressed position of the push button, the driver is decoupled from the partition plate , By decoupling the driver of the partition plate is a so-called free trip reached the partition plate.
  • the separating function of the partition plate can not be rendered ineffective by the fact that the push button is kept permanently in its depressed state. A malfunction of the circuit breaker by abusive or accidentally depressed push button is therefore excluded.
  • the driver is preferably guided on a closed circular path, so that he takes a different path when pressing the push button than when Jump back the push button in the extended position.
  • the driver is guided in particular on a guide ridge, which is formed integrally with one of the contact arms, in particular the BimetallANDarm.
  • the driver is preferably guided around this ring guide annularly.
  • this is expediently provided with two with respect to the displacement direction of the push button obliquely hired, in particular approximately parallel sliding surfaces. These sliding surfaces are arranged with respect to the above-mentioned Systemssgrates that the driver is deflected when pressing the push button and when extending the push button on each other flat side of the contact arm.
  • the driver is preferably connected elastically deflectable with the push button.
  • the driver is integrally connected via an integrally formed on the push button spring arm with this.
  • the contact arm is provided with an incision through which the driver springs back to a rest position when the Push button has reached its depressed position, so that the driver is quickly and safely decoupled from the separator plate.
  • the push button advantageously additionally has a second driver.
  • This second driver is arranged such that it abuts in the extension of the push button on the partition plate, so that the push button is held by the partition plate in the depressed position, as long as the partition plate is in the release position.
  • both parts are separately biased by a separate helical compression spring in the direction of the separation position of the partition plate or on the extended position of the push button in a separate embodiment of the partition plate and the push button.
  • Each of these two helical compression springs is hereby placed in the sense of an easily miniaturizable and effective guidance on a separate guide pin of one of the contact arms.
  • both helical compression springs are guided on the same contact arm, in particular the fixed contact arm.
  • the circuit breaker 1 comprises in this embodiment a housing 2, which is formed from a housing base 3 and a housing cover 4.
  • the circuit breaker 1 further comprises a Fest.arm 5, a BimetallKINGarm 6 and a Bimetallschnappulation 7.
  • the circuit breaker 1 also includes a fixed contact 8 in the form of a weld plate, a moving contact 9 in the form of a rivet and for attaching the Bimetallschnappulation 7 another rivet 10 and another Welding plate 11.
  • the housing base 3 and the housing cover 4 are made of electrical insulating material, namely a thermoplastic material.
  • the one-piece housing cover 4 is pot-shaped and thus encloses with five closed walls a volume which defines an interior 12 (indicated by a dashed reference arrow) of the circuit breaker 1.
  • the housing cover 4 can be snapped onto the housing base 3 with its open side.
  • Fig. 2 shows the circuit breaker 1 with the housing 2 closed, ie with attached to the housing base 3 housing cover 4th
  • the contact arms 5 and 6 are bent-stamped parts made of sheet metal, in particular tinned brass, with a flat, rectangular cross-section.
  • the housing base 3 of the Fest.arm 5 and the Bimetallkingarm 6 are positively embedded by the contact arms 5 and 6 are encapsulated with the material of the Gezzauesockels 3 in the manufacture of the circuit breaker 1.
  • the contact arms 5 and 6 protrude on an underside 13 of the housing base 3, each with a plug contact 14 from the housing base 3 to the outside.
  • the housing 2, in particular the housing cover 4 have approximately the shape of a Flachquaders with a (housing) narrow side 15 and a (housing) broadside 16.
  • the contact arms 5 and 6 are embedded in the housing base 3 in such a way that the plug contacts 14 parallel to each other and with respect to the housing narrow side 15 approximately centrally and spaced from each other are.
  • the circuit breaker 1 is based on the standard ISO 8820 type F (miniature) in terms of its external geometrical dimensions, ie corresponds from the outside a type F flat fuse according to this standard, so that the circuit breaker 1 is compatible with a socket for such Flachsteckêt, i. in such a socket can be inserted.
  • the plug contacts 14 of the contact arms 5 and 6 are each arranged at the edge.
  • both contact arms 5 and 6 are each guided inwardly toward the housing center, so that an inner end 17 of the Fest.arms 5 is disposed over an inner end 18 of the Bimetallkingarms 6.
  • top here - regardless of the actual orientation of the circuit breaker 1 in the room - the side facing away from the housing base 3 and the plug contacts 14 side of the circuit breaker 1 is designated.
  • the inner ends 17 and 18 of the contact arms 5 and 6 are - as in particular from Fig. 3 can be seen - in the direction of the housing broadside 16 centered with respect to a central longitudinal axis 19 ( Fig. 3 ) of the housing 2.
  • the longitudinal extent of the contact arms 5 and 6, and in particular of the plug contacts 14 of these contact arms 5 and 6, defines a longitudinal direction 21.
  • the direction perpendicular to the longitudinal direction 21 within the center plane 20 is referred to below as transverse direction 22.
  • the housing base 3 in the transverse direction 22 each edge, and thus approximately in extension of the plug contacts 14, two of a base plate 23 in the interior 12 projecting arms 24 and 25, wherein the Fest.arm 5 in the arm 24 and the Bimetallkingarm 6 are embedded in the arm 25.
  • the arms 24 and 25 can - again in the transverse direction 22 seen - between them a free space 26, in which the inner ends 17 and 18 of the contact arms 5 and 6 protrude.
  • both ends 17 and 18 of the contact arms 5 and 6 are free from the base 3 in the interior 12 from.
  • ELId lake is at a distance from the housing base 3, (also ELId lake) at the inner end 17 of the Fest.arms 5 of the fixed contact 8 is welded.
  • ELId lake is at the inner end 18 of the contact arm 6 - thus again at a distance from the housing base 3 - the rivets 10 attached (see in particular Fig. 3 and 4 ).
  • the Bimetallschnappulation 7 is welded by means of the welding plate 11 (see in particular Fig. 5 or 6 ).
  • the Bimetallschnappulation is in this case in the assembled state - as in particular in the Fig. 7 and 8th recognizable - sandwiched between the rivet 10 and the welding plate 11 is arranged.
  • the oval-shaped bimetallic snap disk 7 is arranged with respect to its longitudinal extension - in the direction of the housing broadside 16 - centered with the central longitudinal axis 19 (see Fig. 5 ).
  • the moving contact 9 and the spatially coincident with the rivet 10 attachment point 34 of the Bimetallschnappulation 7 are thus aligned in particular parallel to the longitudinal direction 21 of the circuit breaker 1 and its contact arms 5 and 6.
  • the opposite longitudinal end of the Bimetallschnappulation 7 is free in the interior 12 and is referred to as free end 28 accordingly.
  • This free end 28 carries the Bimetallschnappulation 7 in juxtaposition to the fixed contact 8 and on its fixed contact 8 side facing the moving contact 9 (see in particular Fig. 7 and 8th ; in the illustration according to Fig. 5 is not visible moving contact 9 only indicated by dashed lines).
  • the Bimetallschnappulation 7 is further formed such that it changes its shape abruptly when its temperature exceeds a design predetermined default trip temperature of preferably 1700 ° C. This change in shape takes place in such a way that the moving contact 9 is lifted off the fixed contact 8, and thus the electrical connection existing between the fixed contact arm 5 and the bimetallic contact arm 6 is disconnected.
  • Fig. 8 shows the circuit breaker 1 in the tripped position.
  • the change in shape of the Bimetallschnappulation 7 is reversible depending on their temperature, so that the Bimetallschnapplite 7 in the normal position according to Fig. 7 springs back when its temperature falls below a building-specific predetermined return temperature.
  • this optionally has a snap hysteresis, in which the return temperature is lower than the release temperature.
  • the circuit breaker is therefore only at a low compared to the triggering temperature return temperature conductive again.
  • the punched out, curved in shape and provided with the fixed contact 8 and the rivets 10 contact arms. 5 and 6 with the housing base 3 encapsulated and thus embedded in this.
  • the Bimetallschnappulation 7 provided with the moving contact 9 is welded to the BimetallWalletarm 6 - more precisely to the rivet 10 -.
  • the Bimetallschnappulation 7 is first welded so that the moving contact 9 is spaced from the fixed contact 8 or only loosely rests on this, so that the Bimetallschnappulation 7 is not initially under a bias.
  • the required bias of the Bimetallschnappulation 7 in the normal state is produced only in a subsequent manufacturing step by the inner end 18 of the Bimetallkingarms 6 about a 22 extending in the transverse direction and from the housing base 3 sufficiently spaced buckling axis 29 (see Fig. 3 and 5 ) is bent over.
  • the bending of the end 18 takes place in the representation of the Fig. 3 and 5 to the rear, and thus in the direction of the end 17 of the Fest.arms 5.
  • the bending is preferably controlled, wherein the bending process is continued until the Bimetallschnappulation 7 has reached a predetermined target bias.
  • the bend of the end 18 thus allows an adjustment of the circuit breaker 1, compensated by the manufacturing tolerances, especially in the embedding of the contact arms 5 and 6 in the housing base 3, and a uniform, precise tripping behavior of the circuit breaker 1 can be ensured.
  • the housing cover 4 is snapped onto the housing base 3.
  • the circuit breaker 1 operates intermittently.
  • the Bimetallschnappulation 7 is heated by the electrical power loss until the release temperature is exceeded, and the Bimetallschnappulation 7 by leaps and bounds Shape change separates the circuit. Due to the now forcibly collapsing current flow occurs a gradual cooling of the circuit breaker 1, and thus the bimetallic snap 7. As soon as the temperature of the bimetallic snap disk 7 drops below the return temperature, the bimetallic snap disk 7 returns to the normal position, whereby the circuit is closed again.
  • the overload condition in particular the short circuit
  • the plastic housing cover 4 which effectively thermally insulates the interior 12 of the circuit breaker 1. Due to the thermally insulating housing 2, the turn-off of the circuit breaker 1 is extended in case of overload, since the cooling of the bimetallic snap disk 7 is slowed down after the release. Thus, both protected by the circuit breaker 1 circuit and the circuit breaker 1 itself is spared.
  • a second variant of the circuit breaker 1 is based on Fig. 9 to 15 described.
  • This second variant is similar in terms of construction, assembly and function - unless otherwise described below - in the first variant.
  • the housing base 3, the contact arms 5 and 6, the Bimetallschnappulation 7, the fixed contact 8, the moving contact 9, and the rivet 10 and the welding plate 11 with the corresponding parts of the embodiment described above are identical.
  • the second variant of the circuit breaker 1 according to the Fig. 9 to 15 but a separator 36 and a helical compression spring 37th
  • the separating element 36 is designed as a one-piece plastic injection molded part and essentially comprises a separating plate 38 and a push button 39.
  • the housing cover 4 substantially corresponds to the housing cover 4 of the variants of the circuit breaker 1 described above, but deviating from this has in its upper surface a recess 40 through which the push button 39 of the separating element 36 in the installed state protrudes from the housing 2.
  • the Fig. 10 shows the circuit breaker 1 in the assembled state, and in particular protruding from the housing 2 pushbutton 39th
  • the helical compression spring 37 and the push button 39 are guided on the Festutton 5.
  • the fixed contact arm 5 has for this purpose two thin, elongated guide domes 41 and 42.
  • the helical compression spring 37 is in this case pushed onto the outer guide pin 41 (see in particular Fig. 11 ).
  • the push button 39 is pushed onto the guide dome 41 and 42, so that the helical compression spring 37 sandwiched between the arm 24 of the housing base 2 and the push button 39 (see Fig. 12 ).
  • the pushbutton 39 has a receptacle which is substantially adapted to the dimensions of the domes 41 and 42. This receptacle is optionally formed of two separate bores for receiving in each case one of the guide domes 41 and 42 or through a slot-shaped opening in which both guide domes 41 and 42 eino together.
  • the partition plate 38 In the installed position of the separating element 36, the partition plate 38 is approximately in the transverse direction 22 from the push button 39 and is approximately co-planar with the median plane 20 the inner end 17 of the Fest.arms 5 upstream (see Fig. 12 ). It lies thus in particular between the inner end 17 of the Fest.arms 5 and the Bimetallschnappgrade 7.
  • the partition plate 38 At its side facing away from the push button 39 in the transverse direction edge 22, the partition plate 38 is guided on the inner edge of a longitudinal extension 33 of the contact arm 6, which is approximately in extension of the plug contact 14 into the interior 12 into it. This inner edge thus forms a wishessgrat 43 for the partition plate 38.
  • the partition plate 38 engages around this foundedsgrat 43 with an integrally formed, fork-like guide contour 44.
  • This guide contour 44 has two, the Actuallysgrat 43 front and rear embracing tines 45 and 46 (see in particular Fig. 14 ).
  • the two prongs 45 and 46 of the guide contour 44 are - as in particular from Fig. 15 is recognizable - slightly offset in the longitudinal direction 21 to the "Einfädein" the guide contour 44 on the foundedsgrat 43 of the longitudinal extension 33 to facilitate.
  • the separating element 36 is displaceably guided on the guide domes 41 and 42 as well as on the guide ridge 43 in the longitudinal direction 21 between a separating position and a release position.
  • the partition plate 38 is disposed below the fixed contact 8 and the moving contact 9. More precisely, the partition plate 38 - seen in the longitudinal direction 21 - between the fixed contact 8 and the moving contact 9 on the one hand and the end 18 of the contact arm 6 and the attachment point 34 of the Bimetallschnappulation 7 is arranged. The partition plate 38 is thus withdrawn from the area of the fixed contact 8 and the moving contact 9, so that the moving contact 9 can touch the fixed contact 8 unhindered.
  • the separating position is the separating element 36 (compared to the illustration in FIG Fig. 12 ) Move upward, so that the partition plate 38 rests between the fixed contact 8 and the moving contact 9.
  • the separator 36 is raised by the helical compression spring 37, i. biased in the direction of the release position. Under the spring pressure, the separating element 36 automatically assumes the disconnected position when, when the circuit breaker 1 is triggered, the moving contact 9 is lifted off the fixed contact 8.
  • the partition plate 38 thus pushes between the fixed contact 8 and the moving contact 9 and prevents that upon cooling of the Bimetallschnappulation 7, the electrical connection between the fixed contact 8 and the moving contact 9 is closed again.
  • the release position of the partition plate 38 corresponds to a position of the push button 39, in which the push button 39 is flush with the upper edge of the housing cover 4 or protrudes only slightly from the housing 2 to the outside. This position of the push button 39 is referred to as depressed position.
  • the separating position of the partition plate 38 corresponds to a position of the pushbutton 39, in which - if appropriate - protrudes from the housing 2 as in the depressed position.
  • This position of the push button 39 is hereinafter referred to as "extended position”.
  • the partition plate 38 is at least on its bimetallic snap disk 7 facing front with a sharp upper edge (hereinafter referred to as contact edge 47) provided with the partition plate 38 on the Moving contact 9 is present.
  • the abutment edge 47 is for this purpose in particular, as from the Fig. 12 and 15 emerges outward, thus on the bimetallic snap disk 7, obliquely employed.
  • the displacement of the push button 39 is limited downwards by a stop 48 which is integrally formed on the arm 24 of the housing base 3.
  • the stop 48 flanks the helical compression spring 37 and is dimensioned sufficiently long to preclude crushing of the helical compression spring 37.
  • the displacement of the push button 39 is limited by stops 49 which are integrally formed at the lower end of the push button 39, and with which the push button 39 abuts in the extended position on the housing cover 4.
  • FIG. 16 to 24 A further improved variant of the above-described embodiment of the circuit breaker 1 is in the Fig. 16 to 24 shown.
  • the partition plate 38 and the push button 39 of the separating element 36 realized as separate components which are guided against each other slidably to allow a free release of the circuit breaker 1.
  • the housing base 3, the fixed contact 5, the Bimetallschnappulation 7, the fixed contact 8, the moving contact 9, the rivets 10 and the welding plate 11 are in turn identical to the corresponding parts of the embodiments described above.
  • the BimetallKeyarm 6 is formed substantially identical to the Bimetallnapsarm 6 of the embodiments described above. Notwithstanding this, only the longitudinal extension 33 is according to Fig.
  • a recess 50 is formed.
  • the housing cover 4 substantially corresponds to the housing cover 4 according to Fig. 9 , Only the shape of the recess 40 is in adaptation to a in the embodiment according to Fig. 16 to 24 modified cross section of the push button 39, which here essentially has the shape of a letter "H" - modified.
  • the closed housing 2 with the protruding from the housing 2 push-button 39 is in Fig. 17 shown.
  • the partition plate 38 For biasing the partition plate 38 comprises the circuit breaker 1 in the embodiment according to the Fig. 16 to 24 an additional helical compression spring 51, which - is pushed parallel to the helical compression spring 37 - on the guide pin 42 (see Fig. 18 ).
  • the push button 39 comprises an integrally formed transverse strut 52, which in the assembled state (see Fig. 19 ), the partition plate 38 engages under.
  • the guide contour 44 is formed, which - in particular for preventing rotation of the push button 39 - as described above, the foundedsgrat 43 below the incision 50 surrounds.
  • a spring arm 53 protruding in the longitudinal direction 21 is furthermore molded, which is provided with a driver 54 at its free end. In the assembled state, the spring arm 53 extends at a small distance to the Guide ridge 43 approximately parallel to the longitudinal extension 33 (FIG. Fig. 19 ), wherein the driver 54 overlaps in the transverse direction 22 with the foundedsgrat 43.
  • a support arch 55 is formed on the partition plate 38, which vaulted over the actual partition plate 38.
  • a fork-like guide projection 56 which engages around the guide mandrel 42 in a form-fitting manner in the assembled state.
  • This guide projection 56 serves at the same time as an abutment for the helical compression spring 51, via which the helical compression spring 51 initiates a spring plate, the biasing plate 38 in the direction of its separation position.
  • the push button 39 is guided on FestAutharm 5 only by the guide pin 41, which stands for this purpose in a corresponding opening of the push button 39.
  • the guide pin 42 and the patch on this coil spring 51 extend without direct interaction with the push button 39 in a recess 57 (FIG. Fig. 19 ) of the latter.
  • circuit breaker 1 each in a fragmentary side view in different Positions of the push button 39 and the partition plate 38 when pressing and then releasing the push button 39 show.
  • Fig. 21 In this case, first shows the circuit breaker 1 in the released state, wherein the push button 39 is in its extended position, and the partition plate 38 in the disconnected position between the moving contact 9 and the fixed contact 8 not visible here.
  • the free end 59 of the driver arm 58 is aligned approximately with the free end 60 of the longitudinal extension 33.
  • the driver 54 however, - arranged in extension of the plane defined by the longitudinal extension 33 - above its free end 60.
  • the spring arm 53 thus protrudes beyond the longitudinal extension 33 in this state.
  • the spring arm 53 is in this case in a relaxed state (also referred to as idle state).
  • the driver 54 has, as in particular from the Fig. 21 to 24 becomes clear, a roughly diamond-shaped cross-section.
  • the downward or upward surfaces 61 and 62 are aligned obliquely to the longitudinal direction 21 and serve as Abgleitschrägen, where the driver 54 is deflected by the Stanfordsgrat 43.
  • the driver 54 When pressing the push button 39, the driver 54 first encounters the upper edge of the longitudinal extension 33 formed at the free end 60. Due to the inclination of the surface 61 and a corresponding inclination of the upper edge of the longitudinal extension 33 of the driver 54 is under deflection of the spring arm 53 to the back of the longitudinal extension 33rd deflected out. He meets here on the free end 59 of Mit Conversearms 54 and moves it with continued pressing the push button 39 down (see Fig. 22 ). With the Mitauerarm 58 and the partition plate 38 is moved downward, in the direction of their release position.
  • the separating plate 38 is again moved under the pressure of the helical compression spring 51 into its separating position, even if the push-button 39 is still held in its depressed position.
  • the displacement of the push button 39 is limited by the partition plate 38 by the push button 39 with the top of his Cross strut 52 abuts the lower edge of the partition plate 38.
  • the crossbar 52 thus forms another driver, which locks the push button 39 in its depressed position, as long as the partition plate 39 is in its release position.

Landscapes

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

Claims (21)

  1. Disjoncteur de protection miniature (1) avec un boitier (2), comprenant une embase de boitier (3) en matériau isolant, ainsi qu'un couvercle de boitier (4) en forme de pot placé ou pouvant être placé sur l'embase de boitier (3), disjoncteur
    dans lequel deux bras de contact (5, 6) allongés et plats sont encastrés partiellement et parallèlement l'un à l'autre quant à leur direction longitudinale (21), dans l'embase de boitier (3),
    dans lequel, à une extrémité intérieure (17) d'un premier des bras de contact (5), est agencé un contact fixe (8),
    dans lequel, à une extrémité intérieure (18) du deuxième bras de contact (6), en un point de fixation (34), est rapportée une lame bimétallique à déclic (7) qui présente une extrémité libre (28) formant ou portant un contact mobile (9), et
    dans lequel le point de fixation (34) et le contact mobile (9) se situent sur un axe (19) parallèle à la direction longitudinale (21) des bras de contact (5, 6),
    caractérisé
    en ce que l'extrémité intérieure (18) du deuxième bras de contact (6) est coudée, entre l'embase de boitier (3) et le point de fixation (34) de la lame bimétallique à déclic (7), autour d'un axe (29) s'étendant transversalement à la direction longitudinale (21) des bras de contact (5, 6), de manière à ce que l'extrémité intérieure (18) du deuxième bras de contact (6) soit d'une orientation légèrement oblique par rapport à un plan médian (20) du disjoncteur de protection (1).
  2. Disjoncteur de protection (1) selon la revendication 1, dans lequel l'extrémité intérieure (18) du deuxième bras de contact (6) fait saillie librement de l'embase de boitier (3), de manière à ce que le point de fixation (34) de la lame bimétallique à déclic (7) soit distant de l'embase de boitier (3).
  3. Disjoncteur de protection (1) selon la revendication 2, dans lequel la distance du point de fixation (34) à l'embase de boitier (3) a une valeur d'au moins 2 mm, de préférence entre 3 mm et 5 mm, notamment de 4,5 mm.
  4. Disjoncteur de protection (1) selon l'une des revendications 1 à 3, dans lequel une extrémité extérieure de chaque bras de contact (5, 6) fait saillie de l'embase de boitier (3), vers l'extérieur, sous forme de fiche de contact (14), et dans lequel l'axe commun (19) du point de fixation (34) et du contact mobile (9) s'étend sensiblement de manière centrale entre les extrémités extérieures (14) des bras de contact (5, 6).
  5. Disjoncteur de protection (1) selon l'une des revendications 1 à 4, dans lequel une extrémité extérieure de chaque bras de contact (5, 6) fait saillie de l'embase de boitier (3), vers l'extérieur, sous forme de fiche de contact (14), et dans lequel les extrémités extérieures des bras de contact (5, 6), ainsi que l'embase de boitier (3), sont conçus compatibles avec un connecteur femelle à fiche pour fusible enfichable selon ISO 8820 type F (miniature).
  6. Disjoncteur de protection (1) selon l'une des revendications 1 à 5, comprenant un élément de sectionnement (36), qui est destiné au sectionnement électrique du contact mobile (9) et du contact fixe (8), et présente une plaque de sectionnement (38) en matériau isolant et un bouton poussoir (39) faisant saillie hors du couvercle de boitier (4) dans l'état monté, disjoncteur dans lequel l'élément de sectionnement (36) est guidé de manière coulissante entre une position de sectionnement, dans laquelle la plaque de sectionnement (38) se place entre le contact mobile (9) et le contact fixe (8), et une position de validation, dans laquelle la plaque de sectionnement (38) libère la mise en contact réciproque du contact mobile (9) et du contact fixe (8), disjoncteur dans lequel l'élément de sectionnement (36) est précontraint par un ressort (37, 51) en direction de la position de sectionnement, et dans lequel l'élément de sectionnement (36) peut être ramené dans la position de validation par appui sur le bouton poussoir (39).
  7. Disjoncteur de protection (1) selon la revendication 6, dans lequel le ressort est un ressort hélicoïdal de compression (37, 51), et dans lequel le ressort (37, 51) est placé sur une première broche de guidage (41, 42) en métal, qui s'étend au moins sensiblement sur toute la longueur de ressort.
  8. Disjoncteur de protection (1) selon la revendication 6 ou la revendication 7, dans lequel la broche de guidage (41, 42) est reliée d'un seul tenant avec l'un des bras de contact, notamment le premier bras de contact (5).
  9. Disjoncteur de protection (1) selon l'une des revendications 6 à 8, dans lequel la broche de guidage (41, 42) s'engage dans un alésage de guidage de l'élément de sectionnement (36), notamment du bouton poussoir (39).
  10. Disjoncteur de protection (1) selon la revendication 8 ou la revendication 9, dans lequel l'élément de sectionnement (36), notamment la plaque de sectionnement (38), est guidé sur une nervure de guidage (43) de l'autre bras de contact (6).
  11. Disjoncteur de protection (1) selon la revendication 10, dans lequel l'élément de sectionnement (36) entoure, par complémentarité de formes, la nervure de guidage (43), avec un contour de guidage (44) en forme de fourche.
  12. Disjoncteur de protection (1) selon la revendication 11, dans lequel le contour de guidage (44) présente deux dents de guidage (45, 46) décalées mutuellement dans la direction longitudinale (21).
  13. Disjoncteur de protection (1) selon l'une des revendications 6 à 12, dans lequel le bouton poussoir (39) et la plaque de sectionnement (38) sont réalisés en tant que pièces séparées et sont guidés de manière coulissante l'un par rapport à l'autre, et dans lequel le bouton poussoir (39) présente un entraîneur (54), qui est guidé de manière telle, que lors de l'enfoncement du bouton poussoir (39) d'une position sortie à une position enfoncée, il déplace la plaque de sectionnement (38) dans la position de validation, et que, lorsque la position enfoncée du bouton poussoir (39) est atteinte, il soit découplé de la plaque de sectionnement (38).
  14. Disjoncteur de protection (1) selon la revendication 13, dans lequel l'entraîneur (54), pour le couplage et le découplage avec la plaque de sectionnement (38), est guidé sur une trajectoire circulaire fermée.
  15. Disjoncteur de protection (1) selon la revendication 13 ou la revendication 14, dans lequel l'entraîneur (54) est guidé autour d'une nervure de guidage (43) réalisée d'un seul tenant avec l'un des bras de contact, notamment le deuxième bras de contact (6).
  16. Disjoncteur de protection (1) selon la revendication 14 ou la revendication 15, dans lequel l'entraîneur (54) présente deux surfaces de glissement (61, 62) d'orientation inclinée par rapport à la direction de coulissement du bouton poussoir (39), qui sont agencées par rapport au bras de contact (6) guidant l'entraîneur (54), de manière telle que l'entraîneur (54), lors de l'enfoncement du bouton poussoir (39), soit dévié sur une face plate du bras de contact (6), et sur l'autre face plate, lors de la sortie du bouton poussoir (39).
  17. Disjoncteur de protection (1) selon l'une des revendications 13 à 16, dans lequel l'entraîneur (54) est relié au bouton poussoir (39) de façon à pouvoir être dévié de manière élastique.
  18. Disjoncteur de protection (1) selon la revendication 17, dans lequel l'entraîneur (54) est relié d'un seul tenant avec le bouton poussoir (39), par l'intermédiaire d'un bras élastique (53).
  19. Disjoncteur de protection (1) selon la revendication 17 ou la revendication 18, dans lequel l'entraîneur (54), lors de l'enfoncement du bouton poussoir (39) d'une position sortie à une position enfoncée, est guidé dans l'état dévié sur l'un des bras de contact, notamment sur le deuxième bras de contact (6), et dans lequel ce bras de contact (6) présente, pour le découplage de l'entraîneur (54) de la plaque de sectionnement (38), une entaille (50) par l'intermédiaire de laquelle l'entraîneur (54) retourne élastiquement dans une position de repos.
  20. Disjoncteur de protection (1) selon l'une des revendications 13 à 19, dans lequel le bouton poussoir (39) comprend un deuxième entraîneur (52) qui vient buter contre la plaque de sectionnement (38) dans la direction de sortie du bouton poussoir (39), de sorte que le bouton poussoir (39) est maintenu dans la position enfoncée aussi longtemps que la plaque de sectionnement (38) se trouve dans la position de validation.
  21. Disjoncteur de protection (1) selon l'une des revendications 13 à 20, dans lequel la plaque de sectionnement (38) et le bouton poussoir (39) sont précontraints de manière distincte en direction de la position de sectionnement, respectivement la position de sortie, par un ressort hélicoïdal de compression séparé (37, 51), placé respectivement sur une broche de guidage séparée (41, 42) de l'un des bras de contact, notamment du premier bras de contact (5).
EP09777595.1A 2008-09-29 2009-08-01 Disjoncteur miniature Active EP2332161B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP14002033.0A EP2779196B1 (fr) 2008-09-29 2009-08-01 Disjoncteur miniature
PL14002033T PL2779196T3 (pl) 2008-09-29 2009-08-01 Miniaturowy wyłącznik ochronny
PL09777595T PL2332161T3 (pl) 2008-09-29 2009-08-01 Miniaturowy wyłącznik ochronny

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008049507A DE102008049507A1 (de) 2008-09-29 2008-09-29 Miniatur-Schutzschalter
PCT/EP2009/005586 WO2010034373A1 (fr) 2008-09-29 2009-08-01 Disjoncteur miniature

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP14002033.0A Division EP2779196B1 (fr) 2008-09-29 2009-08-01 Disjoncteur miniature
EP14002033.0A Division-Into EP2779196B1 (fr) 2008-09-29 2009-08-01 Disjoncteur miniature

Publications (2)

Publication Number Publication Date
EP2332161A1 EP2332161A1 (fr) 2011-06-15
EP2332161B1 true EP2332161B1 (fr) 2014-07-23

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EP14002033.0A Active EP2779196B1 (fr) 2008-09-29 2009-08-01 Disjoncteur miniature
EP09777595.1A Active EP2332161B1 (fr) 2008-09-29 2009-08-01 Disjoncteur miniature

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US (1) US8576042B2 (fr)
EP (2) EP2779196B1 (fr)
KR (1) KR101214133B1 (fr)
CN (1) CN102165554B (fr)
AU (1) AU2009296611B2 (fr)
CA (1) CA2738198C (fr)
DE (2) DE102008049507A1 (fr)
PL (2) PL2779196T3 (fr)
RU (1) RU2461906C1 (fr)
WO (1) WO2010034373A1 (fr)

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Also Published As

Publication number Publication date
EP2779196B1 (fr) 2018-02-14
EP2332161A1 (fr) 2011-06-15
AU2009296611A1 (en) 2010-04-01
US8576042B2 (en) 2013-11-05
RU2461906C1 (ru) 2012-09-20
DE202009019183U1 (de) 2017-11-29
US20110220475A1 (en) 2011-09-15
WO2010034373A1 (fr) 2010-04-01
PL2332161T3 (pl) 2015-01-30
PL2779196T3 (pl) 2018-10-31
CN102165554B (zh) 2014-01-01
AU2009296611B2 (en) 2014-01-16
DE102008049507A1 (de) 2010-04-01
CA2738198A1 (fr) 2010-04-01
EP2779196A1 (fr) 2014-09-17
CA2738198C (fr) 2015-10-06
AU2009296611A2 (en) 2011-04-28
CN102165554A (zh) 2011-08-24
KR101214133B1 (ko) 2012-12-20
KR20110084894A (ko) 2011-07-26

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