EP0412953A2 - Interrupteur de protection de ligne - Google Patents

Interrupteur de protection de ligne Download PDF

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Publication number
EP0412953A2
EP0412953A2 EP90890212A EP90890212A EP0412953A2 EP 0412953 A2 EP0412953 A2 EP 0412953A2 EP 90890212 A EP90890212 A EP 90890212A EP 90890212 A EP90890212 A EP 90890212A EP 0412953 A2 EP0412953 A2 EP 0412953A2
Authority
EP
European Patent Office
Prior art keywords
pawl
circuit breaker
switching bridge
housing
mouth
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP90890212A
Other languages
German (de)
English (en)
Other versions
EP0412953B1 (fr
EP0412953A3 (en
Inventor
Adolf Tetik
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.)
Felten & Guilleaume Fabrik Elektrischer Apparate A
Original Assignee
Felten & Guilleaume Fabrik Elektrischer Apparate AG Schrems-Eugenia Niederoesterreich
Felten & Guilleaume Fabrik Elektrischer Apparate AG
Felten and Guilleaume Austria AG
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 Felten & Guilleaume Fabrik Elektrischer Apparate AG Schrems-Eugenia Niederoesterreich, Felten & Guilleaume Fabrik Elektrischer Apparate AG, Felten and Guilleaume Austria AG filed Critical Felten & Guilleaume Fabrik Elektrischer Apparate AG Schrems-Eugenia Niederoesterreich
Publication of EP0412953A2 publication Critical patent/EP0412953A2/fr
Publication of EP0412953A3 publication Critical patent/EP0412953A3/de
Application granted granted Critical
Publication of EP0412953B1 publication Critical patent/EP0412953B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/526—Manual reset mechanisms which may be also used for manual release actuated by lever the lever forming a toggle linkage with a second lever, the free end of which is directly and releasably engageable with a contact structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
    • H01H2300/046—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H using snap closing mechanisms
    • 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
    • H01H71/04—Means for indicating condition of the switching device
    • 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
    • H01H71/1009—Interconnected mechanisms
    • H01H71/1027—Interconnected mechanisms comprising a bidirectional connecting member actuated by the opening movement of one pole to trip a neighbour pole
    • 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
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2409—Electromagnetic mechanisms combined with an electromagnetic current limiting mechanism
    • 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
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2454—Electromagnetic mechanisms characterised by the magnetic circuit or active magnetic elements
    • 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
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2463—Electromagnetic mechanisms with plunger type armatures

Definitions

  • the invention relates to a circuit breaker with a trigger mechanism which can be triggered by a magnetic release (51) and a bimetallic release (41) for a switching bridge (5) in the housing (1) of the circuit breaker, which extends around a preferably slot-shaped opening (86) in the switching bridge ( 5) engaging bearing pin (4) is pivotally mounted, and which is under the action of a tension spring (16), with a pawl (6) pivotable about the bearing pin (4) of the switching bridge (5) and with an actuating button (20) the switching bridge (5) can be moved into its on position, which is in contact with the contact (48) on a contact carrier (49) fixed to the housing, and back again into its off position, the actuating button (20) being connected to the switching bridge (5) by a push link (25), in particular a bow-shaped thrust link, is coupled, the end (26) of the thrust link (25) facing the pawl (6) in a mouth (9), the opening of which is from the L Agerbolzen (4) of the switching bridge (5) points away,
  • Such a circuit breaker is known from DE-OS 35 20 905.
  • the mouth for the one end of the push rod is on the side facing the actuating button from the pawl and on the other side bounded by the movable switching bridge.
  • the switching bridge and the pawl can be pivoted in the housing of the known circuit breaker around a common bearing pin, a spring being provided which loads the pawl in the sense of reducing the width of the opening of the mouth between the movable switching bridge and the pawl.
  • the movable switching bridge is loaded by a tension spring supported in the housing in the sense of pivoting into the off position.
  • a disadvantage of this embodiment is that the thrust link must overcome the entire force exerted by the tension spring in order to pivot the switching bridge into the on position and to hold it in this on position.
  • the pawl is triggered either by the plunger of the magnetic release or by the bimetallic release in the sense of increasing the width of the opening of the mouth, so that the end initially received in the mouth of the thrust link slides out of the mouth and the movable switching bridge is pivoted from the tension spring to the off position.
  • a baffle is provided on the housing or a push-back stop surface is provided at the end of the movable switching bridge adjacent to the mouth, through which the free End of the push rod is to be pushed back into the mouth when the actuating button is pivoted into its position corresponding to the off position.
  • a circuit breaker with a pair of contacts and with an actuating mechanism mus known for a movable switching bridge is a circuit breaker with a pair of contacts and with an actuating mechanism mus known for a movable switching bridge.
  • a locking lever is provided, which is pivotable relative to the movable switching bridge, the movable switching bridge having a locking surface and the pivoting locking lever having a curved locking end, which together form a mouth for the bent end of a push link, which at its other end with an actuating button which can be pivoted in the housing of the circuit breaker is coupled.
  • the locking lever is pivoted relative to the switching bridge, so that the mouth opens for the end of the push rod and the movable switching bridge is pivoted away from the fixed contact with the aid of a spring.
  • a disadvantage of this known embodiment of a circuit breaker is that, as in the circuit breaker known from DE-OS 3 520 905, the contact pressure is a direct function of the length of the push rod, so that no compensation of the necessary contact pressure after repeated actuation of the Circuit breaker occurring contact erosion is possible.
  • the circuit breaker known from DE-OS 2 933 767 has a switching bridge which is pivotally supported in the housing at one end with lateral play and which is pressed by a compression spring into the off position, ie away from the fixed contact.
  • a two-armed clamping lever is pivotally mounted in the housing of the known circuit breaker, one end of which rests on the movable switching bridge and the other end together with a latching lever which is in the Housing is pivoted about the same axis as the tensioning lever, forms an openable mouth for a push rod.
  • the push rod is connected at its other end to an operating button.
  • the other end of the latch lever opposite the mouth is the magnetic release and the bimetal assigned to solvers.
  • the latching lever is pivoted in such a way that the mouth formed between the tensioning lever and the latching lever is opened, so that the end of the push rod received in the mouth is released and the compression spring pivots the switching bridge thus released into its off position.
  • the latching lever is under the action of a spring, which loads it in the sense of narrowing the width of the opening of the mouth, which is reduced by a bend provided at the end of the latching lever that delimits the mouth on one side.
  • the disadvantage of this circuit breaker is that separate bearings for the switching bridge on the one hand and on the other hand for the latching lever and the tensioning lever are provided, which complicates not only the construction, but also the assembly of the circuit breaker.
  • the circuit breaker known from DE-OS 2 943 696 has a switching bridge pivotally mounted in the housing with lateral play on a bearing pin and a switching pawl pivotably mounted about the same bearing pin.
  • the switching bridge and the pawl together form a mouth for one end of a push link, which is coupled at its other end to an actuating button.
  • the switching link In the on position, the switching link is pressed against the fixed contact by the push rod against the action of a leg spring which is assigned to the switching link.
  • the pawl has an extension which is assigned to the plunger of the magnetic release.
  • An additional clutch lever is provided for the bimetallic release, which is pivoted by the bimetallic strip in the event of release.
  • a cam provided on the clutch lever engages an extension of the pawl and pivots the latter under opening of the mouth.
  • the pawl is assigned a tension spring supported in the housing, which pulls it into its mouth-closing position.
  • the actuating button is under the action of a tension spring which pivots the actuating button into its pivot position corresponding to the off position, so that the end of the push lever is pulled into the mouth is, the switching bridge and the pawl temporarily pivot apart against the action of the spring associated with the pawl.
  • a coupling pin can be used in the cam of the coupling lever, by means of which the switching mechanism can be coupled to the switching mechanism of an adjacent circuit breaker.
  • a disadvantage of this embodiment of a circuit breaker is not only the large number of bearing points and springs - a spring must also be assigned to the coupling lever - but also that the bimetallic release only acts indirectly on the switching pawl, namely via the coupling lever.
  • a jaw that can be opened under the action of a magnetic release and a bimetallic release for a push rod between two parts pivotably mounted in the housing of the switch is implemented in the Kopp circuit breaker, type HS68 (see also CH-PS 586 461).
  • the swivel part assigned to the plunger of the magnetic release and coupled to the bimetallic release via a pull lever which is guided in a guide in the housing is under the action of a spring, which loads it in relation to the other swivel part in order to reduce the size of the mouth.
  • the angled end of the push rod is held in its mouth when the switching bridge is moved into its on position and is held in this.
  • the thrust link In order to pull the end of the thrust link assigned to the mouth back into the mouth after triggering, the thrust link is one Tension spring assigned.
  • One of the two swivel parts of this known circuit breaker interacts with a compression spring which is inserted over a guide bracket connected to the switching bridge. When this pivoting part is pivoted, the spring is compressed, so that the movable switching bridge tilts into the on position.
  • the movable switching bridge is pivotally mounted on a carrier, which in turn is pivotally mounted in the housing. Between the carrier and a hook-shaped sheet metal part, which is movably held by a pawl pivotably mounted on the carrier, a mouth is provided for a thrust link coupled to the actuating button. The movable switching bridge can thus be moved into its on position by pivoting the actuating button.
  • the construction of this known circuit breaker is complicated insofar as the pawl, to which the magnetic release and a pull lever of the bimetal release is assigned, does not limit the receptacle for the push rod directly, but via a hook-shaped sheet metal part that is movably connected to it.
  • the bimetallic strip is attached to a carrier inserted into the housing and connected to the associated terminal.
  • the support is assigned an adjusting screw which is screwed into a nut inserted in the housing. Since the carrier for the bimetallic strip is held by the contact clamp assigned to it, there is a risk that the adjustment of the bimetallic release will be changed unintentionally when the circuit breaker is manipulated when the line circuit breaker is installed.
  • the invention is based on the object, while maintaining a known basic principle, namely the coupling of the actuating button with the movable switching bridge via a thrust link received at one end in a mouth, both to simplify and improve the triggering process and to simplify the assembly of the circuit breaker .
  • the switching bridge is mounted with play on the bearing pin fixed to the housing. Therefore, the switching bridge is first moved to the on position by a pivoting movement around the bearing pin. As soon as the contacts touch each other, the switching bridge pivots around the fixed point formed by the contact fixed to the housing. As the thrust link continues to move, the pawl support is pivoted relative to the movable switching bridge around the bearing connecting these components. This results in a more favorable sequence of movements when switching on and when triggered. Furthermore, the actuation mechanism is less stressed overall.
  • a sleeve which is preferably designed as a tubular rivet, is received in the bearing bores of the pawl support and pawl, which extends through the bearing slot of the switching bridge, and that the housing-fixed bearing pin of the switching bridge engages in the sleeve.
  • This embodiment of the circuit breaker according to the invention has the advantage that the jack support, the pawl and the switching bridge can be combined to form an assembly - this can be done by a machine - before they are inserted into the circuit breaker and that the insertion of this assembly into the circuit breaker is also from a machine can be executed.
  • the sleeve which e.g. a tubular rivet is, instead of the bearing bolt fixed to the housing, the limitation of the pivoting range of the pawl support relative to the switching bridge, since this penetrates the slot of the switching bridge.
  • the movements of the switching bridge relative to the pawl support when pivoting from the off position to the on position are particularly favorable if, according to a proposal of the invention, it is provided that the Bearing slot in the switching bridge following the arc of a circle, the center of which lies in the pivot axis of the pawl support on the switching bridge, is curved.
  • the pawl in its area opposite the plunger of the magnetic release has an extension pointing towards the switching bridge.
  • This embodiment has the advantage that the movement of the plunger of the magnetic release not only opens the mouth and thus triggers the release, but also supports the movement of the contact of the movable switching bridge away from the contact of the contact carrier fixed to the housing, since the projection under the action of the plunger Magnetic release acts in the sense of an opening movement on the switching bridge, because after the release current continues to flow until the arc is extinguished.
  • a stop surface is provided on the actuating button, which rests on the opposite side of the mouth on the push rod when the end of the Push rod is received in the mouth and the switching bridge is in the off position, and that the actuating button is loaded by its spring in the direction that corresponds to the movement of the end of the push rod in the mouth.
  • the thrust link is pressed into the mouth by the stop surface provided on the actuating button, while the actuating button is moved back into its rotational position corresponding to the off position, with the pawl initially opposite the action of the spring loading it in the sense of increasing the width the opening of the mouth and then like under the action of the spring which swivels into the position in which the end of the thrust link is held in its mouth.
  • Additional guide surfaces such as in DE-OS 35 20 905 or separate springs loading the push rod (miniature circuit breaker from Kopp) are therefore unnecessary and an automatic coupling of the push rod with the assembly of the jack, jack support and movable switching bridge is nevertheless achieved.
  • the pawl support is U-shaped, that the web forms a stop assigned to the pawl and that the bearing openings are provided in the legs for the storage of the pawl support on the switching bridge.
  • the bearing forces are distributed symmetrically on both sides of the movable switching bridge.
  • An embodiment of the circuit breaker according to the invention acts in the same sense, in which it is provided that the pawl, which has an essentially U-shaped cross section, has guide lugs which rest on the outer sides of the legs of the pawl support.
  • a technically advantageous embodiment of the circuit breaker according to the invention is characterized in that the spring associated with the pawl rests with one leg on an abutment of the pawl and with its other leg against a raised tongue of the pawl support, and in that the spring with its at least one helical turn having middle part sits on a pin concentric to the bearing opening of the pawl.
  • the bimetallic strip of the bimetallic release is fastened to a support fixed in the housing without play and that the switching bridge rests in its off position on the support of the bimetallic strip.
  • the movable switching bridge in the off position rests against the stop formed by the support of the bimetallic strip, the commutation of the arc from the switching bridge to the guide plate leading into the arc quenching chamber is facilitated, since after the commutation the voltage drop across the poorly conductive bimetal strip disappears .
  • this embodiment allows a more precise adjustment of the bimetal strip of the bimetal trigger.
  • the backlash-free fit of the carrier for the bimetal strip in the circuit breaker according to the invention is achieved particularly easily if the carrier of the bimetal strip has a tab in which at least two openings are provided, and that at least two truncated-cone-shaped pins project into the openings of the carrier .
  • the end of the carrier for the bimetal strip connected to the bimetal strip is assigned an adjusting screw which is screwed into a nut inserted into the housing.
  • This embodiment in conjunction with the backlash-free seat of the carrier for the bimetal strip in the housing, allows a more precise adjustment of the bimetal trigger and additionally gives the advantage that once adjustment has been made by manipulation of the clamp adjacent to the bimetal trigger when installing the circuit breaker according to the invention in the switch box can be changed unintentionally.
  • this embodiment has the advantage that the in the circuit breaker according to DE-OS 35 20 905 provided at the free end of the bimetallic adjusting screw, the operation of which is difficult to dispense with.
  • the transmission of the movement of the bimetallic strip to the pawl for triggering is particularly easy if, according to a proposal of the invention, it is provided that the bimetallic strip is coupled to the pawl via a preferably bow-shaped pull lever.
  • the pull lever assigned to the bimetallic strip is slidably guided in a slot-shaped guide provided in the housing.
  • the guidance necessary for the pull lever is achieved in a particularly simple manner, since the guidance is provided in the housing or more precisely in one half of the housing and is designed in the form of a slot.
  • the conductor cable that connects it to the switching bridge, the switching bridge and the housing-fixed contact carrier with the supply of the solenoid there is an approximately S-shaped current path in the circuit breaker when it is in the on position. Due to the magnetic fields formed in the S-shaped current path when current flows, each arc of the S-loop tends to stretch. Since the arc, which is formed by the bimetallic strip, the conductor cable and the movable switching bridge, contains the magnetically highly conductive carrier for the bimetallic strip protrudes, the magnetic field formed in this area is partially shielded, so that the tendency of this arch to stretch is less.
  • the construction of the circuit breaker according to the invention can also be developed in the direction which allows the circuit breaker to be coupled with further circuit breakers for all-pole disconnection if the conditions required for tripping occur in only one conductor.
  • circuit breakers can be coupled to one another, so that when a switch is triggered by the bimetal release or the magnetic release, the other two switches are also triggered by pivoting their pawls.
  • the slot-like design of one of the two recesses ensures that the pawl in the switch that triggers first can pivot without moving the pawl in the next switch, which is particularly important in the initial stage of the triggering movement.
  • the aforementioned embodiment of the circuit breaker according to the invention also has the effect that when arc-shaped slots are formed instead of rectangular openings, the cross section for the passage openings provided in the housing of coupling pins is smaller, so that increased gas tightness is achieved. This gas tightness is essential insofar as the transfer of ionized gas, which is formed during all switching operations, is reduced considerably from one switching path to the other.
  • the miniature circuit breaker according to the invention can also be equipped with a contact position indicator thanks to its jack support.
  • the pawl support has an eye into which the actuating pin of a contact position indicator engages, which is pivotably mounted in the housing, and whose display surfaces are assigned to an opening in the housing.
  • a jump switch can also be implemented on the circuit breaker according to the invention.
  • the part of the actuating button which is coupled to the push rod is coupled to the part of the actuating lever thereof via a spring accumulator
  • the part of the actuating button which is coupled to the push rod has a projection which on a nose according to a predetermined pivoting angle of the actuating button a pawl mounted pivotably in the housing and standing under the action of a spring comes up so that the thrust link stops when the actuating lever is pivoted further
  • a cam is provided on the part of the actuating button with the actuating lever which essentially completely Position of the actuated lever pivoted against the action of the spring loading it to move the nose out of engagement with the projection, so that the push rod jumps the switch bridge while releasing the spring accumulator in di e On position moved.
  • a circuit breaker shown in Fig. 1 is housed in a housing 1, of which only the lower shell is visible in Fig. 1, since the upper shell is removed.
  • the usual terminals 2 and 3 are used for connecting the conductor to be protected to the circuit breaker.
  • An assembly consisting of a movable switching bridge 5, pawl 6 and pawl support 7 is pivotally mounted in the circuit breaker about a bearing pin 4.
  • the pawl support 7 is pivoted by a leg spring 8 relative to the pawl 6 such that the width of the opening of a mouth 9, which is formed between the pawl 6 and the pawl support 7, is reduced.
  • the spring 8 is placed with a plurality of turns over a pin 10, and rests with its one leg 11 on an abutment 12 of the pawl 6 and with its other leg 13 on a bent tongue 14 of the pawl support 7.
  • the pawl support 7 is pivotally connected to the movable switching bridge 5 by a bearing formed by a tubular rivet 15.
  • the movable switching bridge 5 is loaded by a tension spring 16 which acts on a bent hook 17 of the switching bridge 5.
  • actuating button 20 with an actuating lever 21 which is pivotably mounted about a pin 22 fixed to the housing and by a spring 23 (only the ends of which are visible in FIG. 1) in the sense of a clockwise pivoting, i.e. is loaded in the sense of pivoting into the off position shown in FIG. 1.
  • a hole 24 is provided in the actuation button 20, into which the bent leg of a U-shaped thrust link 25, which is designed, for example, as a wire bracket, engages.
  • the bent leg 26 provided at the other end of the push rod 25 is accommodated in the mouth 9 between the pawl 6 and the pawl support 7 in the position of the circuit breaker shown in FIG. 1 and is in this by the projection 27 which reduces the width of the opening of the mouth 9 on an approach 28 the jack 6 held. It can be seen that the width of the opening of the mouth 9 is increased by pivoting the pawl 6 counter-clockwise in relation to the pawl support 7 so that the leg 26 can slide out of the mouth 9.
  • a stop surface 29 is provided on the actuating button 20, on which the web of the push rod 25 rests when it is arranged with its leg 26 in the receptacle 9 and the switching bridge 5 is in the off position shown in FIG. 1.
  • the pawl support 7 is equipped with an eye 30 which has an arcuate recess.
  • a control pin 31 of a contact position indicator 32 engages in the recess and can be pivoted about an axis 33 fixed to the housing such that, depending on the position of the movable switching bridge 5, one of the two correspondingly colored sections of the contact position indicator 32 is visible from the outside through a window 34 in the housing 1 is.
  • the movable switching bridge 5 is connected to the bimetallic strip 41 via a flexible conductor cable 40.
  • the bimetallic strip 41 is connected to a carrier 42 at its other end.
  • the carrier 42 has a tab 43 in which two openings 44 are provided. In the openings 44, upwardly tapering, conical pins 45, which extend from the bottom of the lower shell of the housing 1, engage, so that the carrier 42 is fixed via its tab 43 without play in the housing 1.
  • the secure, play-free fit of the carrier 42 for the bimetallic strip 41 is achieved without special measures only by simply pressing the tab 43 onto the conical pin 45.
  • the contact 47 of the movable switching bridge 5 is assigned a contact 48 on a contact carrier 49 which is stationary in the housing.
  • the contact carrier 49 is electrically conductively connected to the second terminal 3 of the circuit breaker via a coil 50 of the magnetic release 51.
  • the magnetic release 51 has a conventional structure with a yoke sleeve 52, armature 53, plunger 54 and plunger spring 55.
  • a sheet metal strip serving as a stop 60 for the movable switching bridge 5 in its off position is connected, which leads to an arc extinguishing chamber 61 in which deionized sheets 63 are accommodated.
  • the beginning of the arc quenching chamber 61 is covered on both sides opposite the side housing walls by ceramic plates (not shown).
  • the latter In order to pivot the pawl 6 in relation to the pawl support 7 in the event of a release, the latter has an extension 65 facing the plunger 54 of the magnetic release 51.
  • An extension 66 extends from the extension 65 and points towards the movable switching bridge 5.
  • the bimetallic strip 41 is coupled to the pawl 6 by a U-shaped pull lever 67 which is guided in a guide groove 68 in the bottom of the lower shell of the housing 1.
  • One leg 69 of the pull lever 67 is assigned to the bimetallic strip 41, whereas the other leg 70 of the pull lever 67 is assigned to the arm 65 of the pawl 6.
  • the end of the carrier 42 for the bimetallic strip 41, to which the bimetallic strip 41 is attached is assigned an adjusting screw 75 which is screwed into a nut 76 which is inserted in the housing 1.
  • the set screw 75 By turning the set screw 75, the orientation of the bimetal strip 41 relative to the pull lever 67 can be changed and the bimetal trigger can be adjusted.
  • Lugs 80 and 81 are integrally formed on the pawl 6, which has an essentially U-shaped cross section.
  • the approach 81 has a hole 83 into which a coupling pin can be inserted, which engages through an arcuate opening in the wall of the housing 1 in the arcuate recess 82 in the approach 80 of the pawl 6 of an adjacent circuit breaker.
  • side-by-side circuit breakers can be coupled to one another, the coupled pawl 6 being pivoted only after a predetermined pivoting of the pawl 6, in the extension 81 of which the coupling pin is inserted, because of the slot-shaped recess 82 in the extension 80.
  • the pawl 6 has an essentially U-shaped cross-section, guide projections 89 being provided on the webs, the inner surfaces of which are guided on the pawl support 7.
  • the pawl support 7 is, as shown in FIGS. 9 to 11, essentially U-shaped (FIG. 11) and consists of two legs 101 and 102 which are connected to one another by a web 103. An opening 104 is provided in each of the legs 101, 102, which serves to receive the tubular rivet 15, via which the pawl support 7 is pivotably mounted on the switching bridge 5. The pivotability of the pawl 6 relative to the pawl support 7 is limited by the web 103.
  • Fig. 9 is again the eye 30 for the actuation of the contact position indicator 32 and the tongue 14 on the the leg 13 of the spring 8 is supported to see.
  • the movable switching bridge 5 is made, for example, of a highly conductive copper alloy and carries the contact 47 at one end.
  • FIGS. 2 to 4 also show the hook 17 for the spring 16, which is made in one piece with the switching bridge 5.
  • the switching bridge 5 has an opening 85 for receiving the tubular rivet 15, which pivotally connects the pawl support 7 to the switching bridge 5.
  • the opening 86 in the switching bridge 5 which receives the bearing pin 4 or the sleeve or the tubular rivet described below is designed as a slot which follows an arc whose center lies at the center of the opening 85.
  • the switching bridge 5 also has a flag 87 for connecting the conductor cable 40.
  • the actuating button 20 In the modified embodiment of the actuation button 20 shown in FIG. 12, a so-called snap-on switching is implemented, in which the contacts 47 and 48 approach each other at the end of the switching-on process at a speed which is independent of how quickly the actuating lever 21 is pivoted.
  • the actuating button 20 consists of a part connected to the actuating lever 21 and a further part 90, on which the thrust link 25 engages, the two parts of the actuating button 20 being connected to one another via a spring accumulator (not shown).
  • a pawl 93 is provided, which is pivotably mounted about an axis 92 fixed to the housing, under the action of a pressure spring 94 stands and carries a nose 95 at its free end.
  • a control cam 96 is provided on the part of the actuation button 20 connected to the actuation lever 21.
  • the projection 91 runs on the nose 95 of the pawl 93 after a predetermined pivoting path of the actuating lever 21, so that, despite further pivoting of the actuating lever 21, the push rod 25 is not moved further and the contacts 47 and 48 are no longer approximated.
  • the actuating lever 21 of the actuating button 20 is pivoted counterclockwise to switch on, so that the assembly of the pawl 6, pawl support 7 and movable switching bridge 5 - the three components mentioned are by one Tubular rivet, which passes through the bearing openings of the above-mentioned components and which is then inserted over the bearing pin 4 fixed to the housing, combined to form a structural unit - is pivoted by the push rod 25 so that the contact 47 of the switching bridge 5 approaches the contact 48.
  • the tension spring 16 is tensioned.
  • the bore 24 in the actuation button 20 is located above the connecting line between the bearing pin 22 for the actuation button 20 and the receptacle 9 ("over-dead center position"), so that the assembly of the pawl 6, pawl support 7 and switching bridge 5 and the actuating button 20 remain in the positions corresponding to the on position despite the action of the springs 23 and 16.
  • the contact position indicator 32 is also rotated into its position indicating the on position.
  • the pawl 6 is pivoted, for example, by the plunger 54 of the magnetic trigger 51, so that the leg 26 of the push rod 25 slides out of the mouth 9, the opening width of which has now been enlarged, and the movable switching bridge 5 is moved from the tension spring 16 into its in FIG 1 shown off position is pulled.
  • the movement of the switching bridge 5 is supported by the continued pressure of the plunger 54 on the boom 65, which is transmitted to the switching bridge 5 via the extension 66.
  • Analogous causes a release by the bimetallic release, since the pawl 6 from the bimetallic strip 41 via the pull lever 67, the leg 70 on the boom 65 of the Pawl 6 attacks, is pivoted with an increase in the width of the opening of the mouth 9 relative to the pawl support 7.
  • the leg 26 of the push rod 25 is automatically reinserted into the mouth 9 when the actuating button 20 is moved back into the position shown in FIG. 1 under the action of the spring 23, since the push rod 25 rests against the stop surface 29 of the actuating button 20 and therefore by the rotating actuating button 20 with its end 26 is forced into the mouth 9. Since the width of the opening of the mouth 9 is smaller than the diameter of the leg at the end 26 of the thrust link 25, the pawl 6 springs back against the action of the spring 8 when the end 26 enters the mouth 9 and then back into the position shown in FIG 1 shown locking position, so that the opening of the mouth 9 is so small that the leg 26 of the push rod 25 cannot come out of the mouth 9 the next time it is switched on.

Landscapes

  • Breakers (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Cookers (AREA)
  • Push-Button Switches (AREA)
  • High-Pressure Fuel Injection Pump Control (AREA)
  • Vending Machines For Individual Products (AREA)
  • Thermally Actuated Switches (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Centrifugal Separators (AREA)
  • Massaging Devices (AREA)
  • Sorption Type Refrigeration Machines (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Thermally Insulated Containers For Foods (AREA)
EP90890212A 1989-08-08 1990-07-16 Interrupteur de protection de ligne Expired - Lifetime EP0412953B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT1905/89 1989-08-08
AT190589 1989-08-08

Publications (3)

Publication Number Publication Date
EP0412953A2 true EP0412953A2 (fr) 1991-02-13
EP0412953A3 EP0412953A3 (en) 1991-05-02
EP0412953B1 EP0412953B1 (fr) 1994-08-31

Family

ID=3523561

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90890212A Expired - Lifetime EP0412953B1 (fr) 1989-08-08 1990-07-16 Interrupteur de protection de ligne

Country Status (9)

Country Link
EP (1) EP0412953B1 (fr)
AT (1) ATE110882T1 (fr)
AU (1) AU627054B2 (fr)
DE (1) DE59006962D1 (fr)
ES (1) ES2063331T3 (fr)
HK (1) HK60396A (fr)
HU (1) HU205483B (fr)
TN (1) TNSN90113A1 (fr)
TR (1) TR24652A (fr)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0506503A1 (fr) * 1991-03-29 1992-09-30 Hager Electro S.A. Mécanisme de serrure pour disjoncteur
FR2689309A1 (fr) * 1992-03-31 1993-10-01 Merlin Gerin Mécanisme de commande à tiroir pour disjoncteur électrique à phase et neutre.
EP0570647A1 (fr) * 1992-05-13 1993-11-24 Hager Electro S.A. Mécanisme de serrure pour disjoncteur et disjoncteurs l'incorporant
EP0577586A1 (fr) * 1992-06-29 1994-01-05 Felten & Guilleaume Austria Ag Interrupteur automatique
TR27123A (tr) * 1993-07-21 1994-11-09 Felten & Guilleaume Ag Oester Kontak köprüsüne, tespit mandali mesnedine, tepit mandalina sahip otomatik salter.
WO1996030924A1 (fr) * 1995-03-29 1996-10-03 Delta Circuit Protection & Controls Limited Disjoncteur
EP0897186A2 (fr) * 1997-08-14 1999-02-17 Siemens Aktiengesellschaft Mécanisme de commutation pour un disjoncteur
EP1146534A1 (fr) * 2000-04-11 2001-10-17 Felten & Guilleaume KG Mécanisme de commutation pour un disjoncteur
DE10126851C1 (de) * 2001-06-01 2002-12-19 Siemens Ag Schaltgerät mit einem elektromagnetischen Auslöser
WO2003012812A1 (fr) * 2001-08-01 2003-02-13 Abb Service S.R.L. Disjoncteur pour circuit electrique basse tension
US6816055B2 (en) 2001-01-31 2004-11-09 Siemens Aktiengesellschaft Adjusting device for a thermal trip element
US7135953B2 (en) 2001-07-02 2006-11-14 Siemens Aktiengesellschaft Adjusting device for a thermal trip
CZ300092B6 (cs) * 2001-09-20 2009-01-28 Moeller Gebäudeautomation KG Spínací mechanika pro ochranný spínac
EP1884975B1 (fr) * 2006-08-01 2016-08-31 Siemens Aktiengesellschaft Dispositif de commutation
CN108172479A (zh) * 2018-02-01 2018-06-15 雅絮智能科技有限公司 一种塑壳断路器的动触头

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2147158B1 (es) * 1998-12-30 2001-03-01 Power Controls Iberica Sl Perfeccionamientos en los disyuntores automaticos de escape a tierra.
CN103021748B (zh) * 2012-12-28 2015-04-22 常熟开关制造有限公司(原常熟开关厂） 大断口断路器

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3520905A1 (de) * 1984-06-15 1985-12-19 Mitsubishi Denki K.K., Tokio/Tokyo Leitungsunterbrecher
EP0338930A1 (fr) * 1988-04-22 1989-10-25 Hager Electro S.A. Disjoncteurs ou disjoncteurs differentiels

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3520905A1 (de) * 1984-06-15 1985-12-19 Mitsubishi Denki K.K., Tokio/Tokyo Leitungsunterbrecher
EP0338930A1 (fr) * 1988-04-22 1989-10-25 Hager Electro S.A. Disjoncteurs ou disjoncteurs differentiels

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0506503A1 (fr) * 1991-03-29 1992-09-30 Hager Electro S.A. Mécanisme de serrure pour disjoncteur
FR2674679A1 (fr) * 1991-03-29 1992-10-02 Hager Electro Mecanisme de serrure pour disjoncteur.
FR2689309A1 (fr) * 1992-03-31 1993-10-01 Merlin Gerin Mécanisme de commande à tiroir pour disjoncteur électrique à phase et neutre.
EP0564380A1 (fr) * 1992-03-31 1993-10-06 Schneider Electric Sa Mécanisme de commande à tiroir pour disjoncteur électrique à phase et neutre
EP0570647A1 (fr) * 1992-05-13 1993-11-24 Hager Electro S.A. Mécanisme de serrure pour disjoncteur et disjoncteurs l'incorporant
EP0577586A1 (fr) * 1992-06-29 1994-01-05 Felten & Guilleaume Austria Ag Interrupteur automatique
TR27123A (tr) * 1993-07-21 1994-11-09 Felten & Guilleaume Ag Oester Kontak köprüsüne, tespit mandali mesnedine, tepit mandalina sahip otomatik salter.
WO1996030924A1 (fr) * 1995-03-29 1996-10-03 Delta Circuit Protection & Controls Limited Disjoncteur
EP0897186A2 (fr) * 1997-08-14 1999-02-17 Siemens Aktiengesellschaft Mécanisme de commutation pour un disjoncteur
EP0897186A3 (fr) * 1997-08-14 1999-08-04 Siemens Aktiengesellschaft Mécanisme de commutation pour un disjoncteur
EP1146534A1 (fr) * 2000-04-11 2001-10-17 Felten & Guilleaume KG Mécanisme de commutation pour un disjoncteur
US6816055B2 (en) 2001-01-31 2004-11-09 Siemens Aktiengesellschaft Adjusting device for a thermal trip element
DE10126851C1 (de) * 2001-06-01 2002-12-19 Siemens Ag Schaltgerät mit einem elektromagnetischen Auslöser
US7135953B2 (en) 2001-07-02 2006-11-14 Siemens Aktiengesellschaft Adjusting device for a thermal trip
WO2003012812A1 (fr) * 2001-08-01 2003-02-13 Abb Service S.R.L. Disjoncteur pour circuit electrique basse tension
CZ300092B6 (cs) * 2001-09-20 2009-01-28 Moeller Gebäudeautomation KG Spínací mechanika pro ochranný spínac
EP1884975B1 (fr) * 2006-08-01 2016-08-31 Siemens Aktiengesellschaft Dispositif de commutation
CN108172479A (zh) * 2018-02-01 2018-06-15 雅絮智能科技有限公司 一种塑壳断路器的动触头
CN108172479B (zh) * 2018-02-01 2024-04-09 雅絮智能科技有限公司 一种塑壳断路器的动触头

Also Published As

Publication number Publication date
ES2063331T3 (es) 1995-01-01
HUT56659A (en) 1991-09-30
HU904706D0 (en) 1991-01-28
TR24652A (tr) 1992-01-01
ATE110882T1 (de) 1994-09-15
EP0412953B1 (fr) 1994-08-31
TNSN90113A1 (fr) 1991-03-05
DE59006962D1 (de) 1994-10-06
AU6022690A (en) 1991-02-14
AU627054B2 (en) 1992-08-13
HK60396A (en) 1996-04-19
HU205483B (en) 1992-04-28
EP0412953A3 (en) 1991-05-02

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