EP0862784B1 - Überstromschutzschalter - Google Patents

Überstromschutzschalter Download PDF

Info

Publication number
EP0862784B1
EP0862784B1 EP97944829A EP97944829A EP0862784B1 EP 0862784 B1 EP0862784 B1 EP 0862784B1 EP 97944829 A EP97944829 A EP 97944829A EP 97944829 A EP97944829 A EP 97944829A EP 0862784 B1 EP0862784 B1 EP 0862784B1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
contact
contact bridge
housing
breaker according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97944829A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0862784A1 (de
Inventor
Fritz Krasser
Franz Winkler
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 DE29724493U priority Critical patent/DE29724493U1/de
Publication of EP0862784A1 publication Critical patent/EP0862784A1/de
Application granted granted Critical
Publication of EP0862784B1 publication Critical patent/EP0862784B1/de
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
    • 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
    • H01H73/306—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 the push-button supporting pivotally a combined contact-latch lever
    • 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
    • H01H73/02—Details
    • H01H73/04—Contacts
    • H01H73/045—Bridging contacts
    • 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
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0207—Mounting or assembling the different parts of the circuit breaker
    • H01H71/0214—Housing or casing lateral walls containing guiding grooves or special mounting facilities

Definitions

  • the invention has for its object a switch of the type mentioned to develop in such a way that it is inexpensive to manufacture and a space-saving, also allows narrow construction across its wall surfaces. In particular, he should can also cope with high switching currents above 50 A, without having to deal with large ones Suitable larger current cross-sections the solution of the beginning mentioned task is impaired.
  • This object is solved by claim 1.
  • This solution enables the fixed contacts in a very space-efficient way and yet with a large air space between them in the corners of the housing position. Their knife-edge-like effectiveness compared to the contact bridge ensures good contact.
  • Claim 3 enables in this context Particularly space-saving, staggered positioning in the direction of the switch's longitudinal axis of the two fixed contacts with their base parts. This enables compliance a narrow design of the switch or switch housing.
  • Claim 4 serves to facilitate the switch assembly while ensuring the Position accuracy of the two fixed contacts.
  • the housing is only in two parts. It contains not only the for storage and / or guidance Fixed contacts, but also the moving parts of the switch kinematics only two with their open sides facing each other, made of insulating material, namely the chassis part and the closure part. Both parts contain one of the two substantially parallel side walls.
  • the switch housing has approximately the outline shape of a cuboid and its approximately parallel to each other Aligned side walls are the one with several lined-up switches Contact areas to the neighboring switch.
  • the chassis part forms one in addition to one of the two said wall surfaces Face, while the closure part next to the other face still the two Contains flank or narrow side walls of the housing.
  • the Functional parts - if necessary previously assembled into assemblies - only on put the inside of the chassis part and between there at the one-piece Injection molding of the chassis part molded-in wall projections used fixed.
  • the chassis part equipped with the functional parts in such a secured manner becomes drawer-like in the longitudinal direction of the switch until it snaps into one another the closure part inserted.
  • Claim 5 long despite the narrow design of the switch sought Creepage distances created for the switching voltage. This creates an arc opposite.
  • the switch contains a flat box-shaped insulating material housing 1, which in the essentially has the outline shape of a cuboid.
  • the two-part housing is made from the chassis part 2 and the closure part 3 with the purpose of a space-saving Side walls 4 and 5 running approximately parallel to one another.
  • the chassis part 2 contains the first of the further outer walls of the switch End wall 6 with bushings for the contact connections 7, 8 and one Through hole 9 for the adjustment of the bimetal 38 described below Locking part 3, on the other hand, contains on externally effective housing walls the side wall 5 still the actuation side, second end wall 10 and the two Flank walls 11, 12 of the housing 1.
  • the manual transmission is located approximately in the middle of one plane of movement running parallel between the side walls 4, 5.
  • the Manual transmission is used to guide the movement of the contact bridge 13, which in Switched on position bridges the gap between the fixed contacts 14, 15 and by means of their contact ends 71, 72 the fixed contacts 14, 15 are electrically conductive connects with each other.
  • the in the current path between the contact terminal 7 (current input) to Contact terminal 8 (current output) fixed contacts 14, 15 are flat parts, e.g. Sheet metal stampings. With their area extension they run in the manner of about one Knife blade parallel to the side walls 4,5 and form with their Contact bridge 13 facing narrow edges in the manner of cutting each one Contact point 16 and 17.
  • the fixed contacts 14,15 are with their Contact points 16,17 opposite back narrow edges 18,19 on the Flank wall 12 of the housing 1. They are in the direction of their longitudinal axis 73 the first housing end wall 6 in the flank spaces next to the plane of movement of the contact bridge support 20 of the gearbox.
  • the fixed contacts 14, 15 are in their base areas approximately at right angles to their surface extension angled that their base parts 21,22 as connecting areas to the Contact connections 7.8 substantially perpendicular to the side walls 4.5 and run approximately parallel to the end walls 6, 10 of the housing 1. They are in Gaps between from the side wall 4 of the housing part 2 to Housing projections protruding 23-26 positioned or plug-in.
  • the base parts 21 form an upper one, the contact points 16, 17 facing U-legs of a U-shaped base part 75, 76 of the fixed contacts 14, 15.
  • the base part 75 of the fixed contact 14 comprises that through a segment of the end wall 6 of the chassis part 2 formed retaining projection 26.
  • the base part 76 of the other fixed contact 15 has a U-shape with the base part 22 as the upper U-leg and with the lower U-leg forming the passage for the adjusting screw 63 77 (Fig.6.7).
  • the fixed contacts 14, 15 are with their base parts 21, 22 and Fixed contact 14 is additionally formed in one piece with its contact connection 7.
  • the fixed contacts 14, 15 are at approximately the same height position of their contact points 16, 17 different lengths (Fig. 4). This means their are in the installed position Base parts 21, 22 are spaced differently apart from the first end wall 6. The enables the desired narrow construction by nesting the two Fixed contacts 14, 15 in their installation position. This is because they are both Base parts 75, 76 in the installation position of the fixed contacts 14, 15 in the longitudinal direction of the Switch axis staggered one behind the other or one below the other (Fig. 8,9 and 11) arranged.
  • the contact bridge support 20 is essentially one with its central plane parallel to the side walls 4,5 and in the middle with a distance between the Side walls 4.5 running flat part. It is made in one piece from insulating material.
  • the Contact bridge carrier 20 carries on its side facing the fixed contacts 14, 15 the contact bridge 13.
  • the contact bridge support 20 has an angular contour and thereby has one on the side of the fixed contacts 14, 15 to the Contact connections 7,8 or projecting towards the housing end wall 6 Vertical leg 27 on that in the area of its free end 28 from the approximately perpendicular to the wall surfaces 4,5 aligned contact bridge 13 is penetrated.
  • the Contact bridge 13 is a metallic, largely flat sheet metal part that also with Contact plate can be populated, and forms with their two towards their Longitudinal axis 74 projecting beyond the ends of the contact bridge carrier 20 Counter contact to the fixed contacts 16, 17. It lies in a vertical leg 27 approximately perpendicularly penetrating slot 29 of the contact bridge support 20.
  • the deposit is such that the contact bridge 13 about the axis formed by the slot 29 from their approximately perpendicular position to the central longitudinal plane of the Contact bridge support 20 is slightly deflectable on both sides. That represents a good one Contact sure.
  • the contact bridge support 20 molded in one piece from insulating material 13 is shown in FIG Switch-on position with one aligned approximately parallel to the fixed contacts 14, 15 Flat part 30 in the manner of a parallel screen to them in the space between the two fixed contacts 14, 15. This will make the Fixed contacts 14.15 shielded from each other and the arc gap between they are significantly enlarged.
  • a switching rod 31 made of insulating material is also in the between the fixed contacts 14.15 and parallel to the side walls 4.5 extending movement plane of the gearbox kinematics longitudinally displaceable.
  • the Longitudinal displacement is achieved by manually loading the housing protruding actuating end 32 of the shift rod 31 causes and the Actuating direction 34 is opposite to the pressure direction of a release spring 33, those in the plane of movement to from the fixed contacts 14, 15 and from Vertical leg 27 of the contact bridge support 20 facing away is offset and on the lower, contact terminal end of the switching rod 31 on the one hand and supported on the housing 1 on the other hand.
  • it is Pressurization of the shift rod 31 biased in the pressure direction 34.
  • the shift rod 31 is of approximately in the central longitudinal plane of the Manual transmission kinematics extending longitudinal groove 35 penetrates. It serves as Slideway for the horizontal leg 36 of the contact bridge support 20, by the longitudinal groove 35 through from the fixed contact side or from the left side Flank wall 12 (Fig. 8,9 and 11) of the housing 1 forth in the other, the right Flank wall 11 facing the housing side area and at its end Latching nose 37 for latching the contact bridge support 20 to the next Overcurrent trip described in detail below, namely the bimetal 38 carries.
  • the contact bridge support 20 is one Tension spring 39 in the upward direction towards the end wall 10 of the push button Switch housing 1 applied.
  • the tension spring 39 is on by means of a spring eye 41 their front wall-side, upper end on one of the wall surface 4 of the Chassis part 2 upstanding spur 40 threaded.
  • a spring eye 41 their front wall-side, upper end on one of the wall surface 4 of the Chassis part 2 upstanding spur 40 threaded.
  • the switching rod 31 and the contact bridge support 20 are supported by support guides the side walls 4,5 of the housing 1 aligned and guided. There are that is, the housing parts 2, 3, or the side walls 4, 5 assigned to them, which on the one hand the orientation, but on the other hand also the mobility of Switch rod 31 and contact bridge support 20 in the plane of movement within the Ensure housing 1.
  • the tension spring 39 is at its lower end 42 on that of the latching nose 37 opposite side of the contact bridge carrier 20 in the area of its Angle apex 49 hinged. There is an integral holding finger 43 available, on which the tension spring 39 is placed with its lower end 42.
  • the Tension spring 39 runs with its longitudinal axis on the fixed contact side and parallel to Central longitudinal plane of the switch kinematics in one of the side walls 4 of the chassis part 2 close range, so off-center in this respect. This off-center location of the Tension spring 39 is causally related to the fact that the Contact bridge carrier 20 only on the side wall 4 of the chassis part 2 in a essentially in the longitudinal direction of the push rod is led.
  • the rotary slide joint guide is essentially parallel to the Shift rod 31 directed guide groove 44 on the side wall 4 of the chassis part 2nd and by a slidably guided therein, approximately perpendicular to the plane of movement of the Gearbox kinematics directed pivot 45 on the apex 49 of the Contact bridge carrier 20 made.
  • the guide groove 44 has in its longitudinal direction a circular segment-shaped course with the shift rod 31 facing Belly of curvature. This course of the guide groove favors the engagement of the Switch rod 31 on the contact bridge support 20 in a further below described way.
  • the tension spring is created by swiveling of the contact bridge support around its pivot 45 the contact pressure on the Contact points 16.17.
  • the pivot pin 45 not only has a guiding function in the manner of a sliding block, by a certain movement curve of the contact bridge carrier 20 compared to the Ensure housing 1. Rather, its end face 46 continues to be used for contact the side wall 4 of the chassis part 2. This system works together with the system the end face 47 of the contact bridge carrier 20 on the other flank side molded boom 48 on the side wall 5 of the closure part 3 of the housing the alignment and parallel guidance of the contact bridge carrier 20 between the causes two side walls 4,5 of the housing 1.
  • the rib-like arm 48 extends from the apex region 49 between the two legs 27, 36 of the Contact bridge carrier 20 to the area of the slot 29 for holding the Contact bridge 13, which by means of the through hole 50 of the contact bridge 13th penetrating pin 49 with the plug hole 78 of the contact bridge support 20th is pinned.
  • the cross-sectional shape of the boom 48 is that of a T or about one Double-T beam.
  • the shift rod 31 is in the region of the passage of its actuating end 32 through the second end wall 10 of the housing 1 and in the housing interior by two diametrically protruding approximately perpendicular to the plane of motion of the gearbox kinematics Sliding shoes 51, 52 on the side walls 4.5 in a groove in the switching direction 34 longitudinally displaceable.
  • the grooves are on the inside of the side walls 4,5 of Chassis part 2 and closure part 3 are integrally formed.
  • the associated with the closure part 3 Groove 52 is clearly visible in Fig. 2.
  • the sliding shoes 51, 52 are at the height of the Longitudinal groove 35 of the shift rod 31 is arranged.
  • the shift rod 31 At the lower end of the shift rod 31 is one on the inside of the Vertical leg 27 of the contact bridge support 20 can be brought into contact as a driver Grip rib 53 formed. It is used when pushing the shift rod 31 in Direction of pressure 34 taking a driver notch 54 on the inside and lower end 28 of the vertical leg 27 of the contact bridge carrier 20.
  • This Driver notch 54 is in the contact opening position (Fig. 8) in the displacement of Grip rib 53 of the shift rod 31 into it.
  • To the contact bridge support 20 in a the engagement of the grip rib 53 in the driver notch 54 is in a convenient position conduct, is the one described above in the direction of the shift rod 31 protruding curvature of the guide groove 44 is provided (Fig. 4). This The belly of curvature is on the course shown in FIGS Guide groove 44 recognizable.
  • the overcurrent release includes a bimetal 38 which is approximately parallel to the switching rod 31 a locking opening 55 located at its swiveling end for engaging the Latching lug 37 of the contact bridge carrier 20.
  • the bimetal 38 is U-shaped bent and stands with the connecting web 56 between the two U-legs 57.58 upwards (Fig. 7).
  • One U-leg 57 is fixed to the base part 22 or connected to the base part 76 of the fixed contact 14 assigned to the current output, especially welded.
  • the other U-leg 58 is at its end with that Current output associated contact terminal 8 welded. Both U-legs 57.58 form approximately a plane perpendicular to the wall surfaces 4, 5.
  • the welded joint is in the region of the leg end 59 of the one-piece contact connection 8 (FIG. 7) intended.
  • the U-bend or the U-connecting bridge bends under the influence of overcurrent 56 of the bimetal 38 clockwise in relation to the clamping points the U-leg 57.58 outwards (Fig. 8), i.e. in from the contact bridge support 20 facing away.
  • Fig. 8 the latching lug 37 of the Contact bridge carrier 20 released.
  • FIG. 8 and 9 Switching on and overcurrent tripping are particularly shown in FIG. 8 and 9:
  • Fig. 8 the switch is in the off position.
  • the Contact bridge carrier 20 is raised on the one hand by the release spring 33 and counterclockwise around the pivot pin 45 and on the other hand through the Tension spring 39 pulled into its off position.
  • the trigger spring 33 acts the shift rod 31.
  • the shift rod 31 indirectly takes the Contact bridge support 20 over which the lower length limit of the longitudinal groove 35 forming, off-center anvil 60 upwards with.
  • the anvil 60 rests on the Contact bridge carrier 20 with its horizontal leg 36.
  • the application of Contact bridge carrier 20 through the release spring 33 in the area of Horizontal leg 36 also causes the contact bridge support 20 to pivot counterclockwise around the pivot pin 45 (Fig. 5,10).
  • FIG. 8 shows the open position in which the contact bridge 13 a clear distance from the two contact points 16, 17 of the fixed contacts 14, 15. In this position the contact bridge 13 through that protruding in the direction of the fixed contacts 14, 15 Flat part 30 shielded from the fixed contacts 14, 15.
  • the switch-off position of the Switch rod 31 is the driver notch 54 of the vertical leg 27 of the Contact bridge carrier 20 into the displacement path of the grip rib 53 into the lower end of the switching rod 31 is formed.
  • the Switch rod 31 with its actuating end 32 particularly far from the Housing bushing 61 and the protruding length of the actuating end 32nd also shows the switch state "off position" to the outside.
  • the switching rod 31 is acted upon in the pressure direction 34.
  • the Grip rib 53 at the lower end of the shift rod 31 grips the Contact bridge carrier 20 by inserting in the driver notch 54 and moves the Contact bridge carrier 20 down.
  • the transmission of the thrust movement from the Switch rod 31 on the contact bridge carrier 20 is carried out by applying the Horizontal leg 36 of the contact bridge support 20 through the upper end of the Longitudinal groove 35 in the shift rod 31. With the pressure movement of the shift rod 31 the tension spring 39 is tensioned and the release spring 33 is compressed.
  • the shift rod 32 is designed so that even when holding it in Switch-on position and simultaneous application of overcurrent to the device, this unlatched and the contact bridge support 20 can move to the off position (Free release).
  • Adjusting screw 63 acts on the base part 22 of the fixed contact 15 in Current outlet area and thus generates the adjustment movement of the bimetal 38.
  • the figures show that the switch is easy to install: First, the assembly VI assigned to the fixed contact 15 of the current outlet 6 inserted into the chassis part 2. After that the will Contact bridge carrier 20 with threaded rod 31 existing assembly V (Fig. 4) with simultaneous anchoring of the function springs 33,39 also on Chassis part 2 assembled. The current input is then fixed assigned fixed contact 14 on the chassis part 2. At least for the duration of the assembly process the captivity of those previously mounted on the chassis part 2 Assemblies ensured.
  • chassis part 2 is compared to the closure part 3 in the from FIG. 2nd and 3 evident relative position brought.
  • the chassis part 2 is then countered the direction of pressure 34 of the switching rod 31 in the manner of a drawer into the closure part 3 inserted.
  • the flank walls 11, 12 of the closure part 3 engage behind the Side wall 4 in the manner of a dovetail by means of its projecting Ribs 66.67.
  • the chassis part 2 snaps with the Locking part 3 by its locking projections 68 in the locking eyes 69 of the Locking part 3 fall into place.
  • Threaded sleeve 70 On the end wall 10 of the closure part 3 is an outwardly projecting Threaded sleeve 70 is formed, which for attaching the switch e.g. in one Control cabinet is used.

Landscapes

  • Breakers (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Keying Circuit Devices (AREA)
  • Control Of Eletrric Generators (AREA)
  • Electronic Switches (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Push-Button Switches (AREA)
EP97944829A 1996-09-07 1997-09-04 Überstromschutzschalter Expired - Lifetime EP0862784B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE29724493U DE29724493U1 (de) 1996-09-07 1997-09-04 Überstromschutzschalter

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
DE29615644U 1996-09-07
DE29615644 1996-09-07
DE29615761 1996-09-10
DE29615761U 1996-09-10
DE19647716 1996-11-19
DE19647716 1996-11-19
PCT/EP1997/004809 WO1998010456A1 (de) 1996-09-07 1997-09-04 Überstromschutzschalter

Publications (2)

Publication Number Publication Date
EP0862784A1 EP0862784A1 (de) 1998-09-09
EP0862784B1 true EP0862784B1 (de) 2001-11-14

Family

ID=27216844

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97944829A Expired - Lifetime EP0862784B1 (de) 1996-09-07 1997-09-04 Überstromschutzschalter

Country Status (7)

Country Link
US (1) US6040747A (id)
EP (1) EP0862784B1 (id)
AT (1) ATE208956T1 (id)
CA (1) CA2236927C (id)
DE (2) DE29724493U1 (id)
ID (1) ID19307A (id)
WO (1) WO1998010456A1 (id)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10013103C1 (de) * 2000-03-17 2001-11-29 Aeg Niederspannungstech Gmbh Gehäuse
US6710688B2 (en) * 2001-04-30 2004-03-23 Eaton Corporation Circuit breaker
CN101763995B (zh) * 2009-12-29 2012-08-22 宁波奇乐电气集团有限公司 具有自锁功能的断路器触头
US9216527B2 (en) 2012-02-09 2015-12-22 G & W Electric Company Solid-dielectric switch including a molded viewing window
US10541519B1 (en) * 2018-10-10 2020-01-21 Hamilton Sundstrand Corporation Large current circuit breaker plug-in installation

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1588146B2 (de) * 1967-02-22 1972-02-10 Druckknopfbetaetigter ueberstromschalter
CH579823A5 (en) * 1975-03-04 1976-09-15 Baumann Hans Ag Manually operated protective switch - is for thermal and or magnetic automatic release and has swivel toggle levers
US4463403A (en) * 1982-09-27 1984-07-31 Porta Systems Corp. Plug type gas tube replacement module
DE8904063U1 (de) * 1989-04-03 1989-06-22 Ellenberger & Poensgen Gmbh, 8503 Altdorf Druckknopfbetätigter Überstromschutzschalter

Also Published As

Publication number Publication date
EP0862784A1 (de) 1998-09-09
WO1998010456A1 (de) 1998-03-12
JPH11502367A (ja) 1999-02-23
CA2236927A1 (en) 1998-03-12
DE29724493U1 (de) 2001-08-30
CA2236927C (en) 2005-01-04
JP3364749B2 (ja) 2003-01-08
ATE208956T1 (de) 2001-11-15
DE59705384D1 (de) 2001-12-20
ID19307A (id) 1998-07-02
US6040747A (en) 2000-03-21

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