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EP0410235B1 - Appareil de commutation électrique - Google Patents

Appareil de commutation électrique Download PDF

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Publication number
EP0410235B1
EP0410235B1 EP90113497A EP90113497A EP0410235B1 EP 0410235 B1 EP0410235 B1 EP 0410235B1 EP 90113497 A EP90113497 A EP 90113497A EP 90113497 A EP90113497 A EP 90113497A EP 0410235 B1 EP0410235 B1 EP 0410235B1
Authority
EP
European Patent Office
Prior art keywords
switching device
housing
fuse element
arm
contact
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
EP90113497A
Other languages
German (de)
English (en)
Other versions
EP0410235A2 (fr
EP0410235A3 (en
Inventor
Johannes Magendans
Kornelis Loppersum
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.)
ABB BV
Original Assignee
Bv Hollandse Apparatenfabriek "haf"
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 Bv Hollandse Apparatenfabriek "haf" filed Critical Bv Hollandse Apparatenfabriek "haf"
Publication of EP0410235A2 publication Critical patent/EP0410235A2/fr
Publication of EP0410235A3 publication Critical patent/EP0410235A3/de
Application granted granted Critical
Publication of EP0410235B1 publication Critical patent/EP0410235B1/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
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/10—Adaptation for built-in fuses
    • H01H9/104—Adaptation for built-in fuses with interlocking mechanism between switch and fuse

Definitions

  • the invention relates to an electrical switching device with two contact points for a phase conductor and a neutral conductor, with a switching mechanism which can be actuated by means of a switching handle for opening and closing the contact points, and with a fuse element which can be screwed into a receiving space of the switching device and which, when screwed in and out, onto at least one contact point acts to actuate them.
  • a switching device of the type mentioned is known from the Dutch patent application 87 00 770 from April 1, 1987.
  • Switching devices of this type are combined fuses and load switches, the fuses of which respond to a short circuit and which serve to interrupt the phase conductor and the neutral conductor by means of their own switching device.
  • the fuse element is a commercially available fuse, which is housed in a cartridge housing that can be screwed into the switchgear. When screwing in, the securing element acts on a switching mechanism, whereby the contact points are closed; the contact points are opened when the fuse link is removed.
  • the object of the invention is to provide a switching device of the type mentioned, which is simplified compared to the known switching device.
  • the switching mechanism has a rotatably mounted double arm lever, the first arm of which is coupled to the switching handle and the second arm of which is connected to the contact points, the switching mechanism having a first stable position in which the contact points are closed and a second stable position in which the contact points are open, and that in the axis of rotation of the double arm lever a first and a second fork arm having a fork lever is mounted, the first fork arm is coupled to the securing element and the second fork arm is coupled to the switching mechanism, such that when unscrewing the securing element, the switching mechanism can be brought into or held in the second stable position.
  • a particularly advantageous embodiment of the invention can be that the switching handle is coupled to the first arm by means of a bracket and that the second fork arm projects with an extension into the movement path of the bracket, so that the bracket and thus the switching mechanism in the off position when the securing element is unscrewed is captured.
  • the fork lever in the region of the connection point of the two fork arms has a bolt-like extension on which the double-arm lever is rotatably mounted.
  • control arm running transversely thereto in the area of the foot of the securing element, which acts on the first fork arm in such a way that when the securing element is screwed out, it acts in the second stable position of the switching mechanism holds and releases when the securing element is screwed in.
  • the control arm is rotatably supported on one side at its end opposite the first fork arm, and moreover it has a bend at the end adjacent the fork arm, against which the fork arm comes to rest.
  • This embodiment of the switching mechanism ensures that the contact points cannot be switched on with certainty by the movable switching lever when the securing element is unscrewed.
  • the contact points preferably have movable contact pieces which can be moved transversely to the screwing-in direction of the securing element for opening and closing.
  • the contact bridges are accommodated in a contact housing which can be displaced transversely to the direction of insertion of the securing element, the second arm of the double-arm lever being coupled to this contact housing. This creates a mechanical connection between the switching mechanism and the contact points.
  • the housing is coupled to the second arm of the double-arm lever by engaging in a recess in the contact housing.
  • two associated contact points are arranged at different distances from the bottom of the switchgear housing according to claim 10. So that the contact housing is designed stepped in itself.
  • the adapter is preferably equipped with a wall that effects the separation.
  • a post is attached to the fitting, which reaches through to the front front wall of the housing, then characteristics of the securing element can be applied to its end wall, so that the correct securing element is used and no attempt is made to make an inadmissible securing element introduce.
  • the adapter can therefore be prefabricated in an advantageous manner and labeled and characterized for a permissible current, so that confusion can be avoided.
  • a cap is preferably provided which, according to the characterizing features of claim 14, sets the securing element in a linear movement when it is rotated. This simplifies screwing and unscrewing the securing element.
  • a switching device 10 is accommodated in a housing 11, which is composed of a lower housing part 12 and an upper housing part 13. Both housing parts 12 and 13 together form the housing 11 with a T-shape, of which the crossbar 14 of the T-shape contains the parting line 15 between the two housing parts 12 and 13.
  • the longitudinal web 16 of the T-shape which can be found in the upper housing part 13, has an upwardly open recess 17 into which a fuse cartridge 18 can be inserted is.
  • the fuse cartridge 18 is a commercially available fuse cartridge with a cartridge base 19, which consists of electrically conductive material and has a specific diameter that is standardized in accordance with the amperages to be protected.
  • the recess 17 is adapted to the fuse cartridge 18 and therefore has a circular cross section.
  • the recess 17 has on its free edge an inwardly projecting inner rim 20, the inner diameter of which is smaller than the inner diameter of the recess 17 in the remaining area in the longitudinal web 16, so that a radial, annular stop surface 21 is formed, against which the flanged outward Area 22 of a cylindrical guide element 23 for the fuse cartridge 18 comes to rest; on the flanged area 22 a connecting lug 24 is attached, which is bent back in the direction of the cylindrical guide element 23 parallel thereto and is connected to a connecting line 25 which is guided through the parting plane 15 to a connecting terminal 26 located in the crosspiece 14.
  • the edge 27 of the guide element 23 lying opposite the region 22 is provided with a recess 28 which has a bevel 29 drawn in broken lines in FIG. 1, on which a pin 30 also shown in broken lines on the outer surface of a cylindrical, cup-shaped one Housing element 31 can slide, which housing element 31 is surrounded in the region of its cup base by a guide pot 32 with ears 33, 34, which serve as handles for rotating the guide pot 32 with the housing element 31 connected to it.
  • the cup-shaped housing part 31 is in other words, inserted into the inside of the guide pot 32 with its cup bottom.
  • the pin 30 sliding on the bevel 29 or pressed against it also serves for power transmission or contacting.
  • the contact pressure is generated by means of a spring 66 (see below).
  • the guide element 23 (see also FIG. 3) is adjoined in the interior of the longitudinal web 16 by a fitting piece 35 which has a plate 36 with a fitting opening 37; the diameter of the fitting opening 37 corresponds to the diameter of the cartridge foot 19, with different fitting opening diameters being available for different cartridge foot diameters in order to achieve a distinctive character, so that it is prevented that fuse cartridges 18 for impermissible current strengths can be used in an impermissible manner in the switching device.
  • the fitting piece 35 has, at four opposite corners, perpendicular posts 38 and 39, only these two posts being visible in FIG. 3; of the other posts only the post 40 can be seen in FIG.
  • transverse walls 41 which also correspond to perpendicular transverse walls 42 which are also formed perpendicularly thereto on the opposite side of the plate 36.
  • a lateral extension 43 which has an opening 44 in which a shift lever 45 is rotatably mounted.
  • the axis of rotation is designated 46.
  • One of the posts can be designed to reach through to the front wall; the end face of this post is then suitable for carrying a label (max. permissible current, etc.) that is adapted to the corresponding adapter.
  • the shift lever 45 has two lever arms, of which a lever arm 47 protrudes as a shift handle from the top of the side extension 43.
  • the opening 44 has the movement of the control handle 47 stop surfaces 48 and 49, the angle of which is adapted to the vertical to the end positions of the control handle 47.
  • the other lever arm 50, the shift lever 45 which is located on the side of the axis of rotation 46 opposite the lever arm 47 and projects from it, has at its free end a bore 51 into which the one leg 52 of a U-shaped bow 53 engages from wire.
  • the other leg 54 of the bracket 53 is connected to the free end of an arm 55 of a double arm lever 56, the two arms forming an obtuse angle with one another.
  • the double arm lever 56 is rotatably mounted on a shaft which is guided in a bore 59 in the housing and on which two fork arms 60 and 61 are formed, which are arranged in a fork-like manner and lie parallel to one another and perpendicular to the axis of rotation, with the transverse wall between the fork arms 60 and 61 42 engages so that there is a fork arm where the foot 19 of the fuse cartridge 18 passes through the plate, whereas the another fork arm 61 is arranged outside the transverse wall 42.
  • the fork arm 60 has at its free end a cylindrical extension 62 which extends transversely to the longitudinal extension of the fork arm, so that an L-shape is thereby formed;
  • This extension 62 is located in the range of movement of the bracket 53, so that when the switching lever 45 is rotated about the axis 46, the bracket 53 comes to rest against the outer surface of the extension 62 and the two fork arms 60 and 61 are thus rotated with their shaft 58.
  • the fork arm 61 has a nose 63 which cooperates with a bend 64 of a contact plate 65 which covers the opening 37, as will be explained in more detail below.
  • the contact plate 65 rests under the pressure of a spring 66 against a projection 67 on the plate 36, so that the inclined position shown in FIG. 3 is taken up by the plate 65.
  • the arm 57 engages in a recess, not shown, in a contact housing 68.
  • the bottom surface of the lower housing part 12 is stepped transversely to the connecting line of the terminals 26, 69, so that two double contact points 70 and 71 are formed, which are arranged at different heights in relation to the fastening level of the switching device.
  • Also connected to the fixed contact piece 73a is a rail 75a, which is connected to a connecting terminal 69a lying next to the connecting terminal 69.
  • the fixed contact piece 73b is fastened to a rail 75b to which a strand 75c is connected, the other end of which connects to the plate 65.
  • the fixed contact pieces 72a, 72b; 73a, 73b can be bridged by means of a contact bridge 76 and 77 running parallel to the contact rails 74 and 75 and having movable contact pieces 78a, 78b and 79a, 79b.
  • the contact pressure is produced by means of contact pressure springs 80 and 81, which are only shown in broken lines.
  • the contact housing 68 is adapted to the contact areas 70 and 71, so that the contact housing 68 is also stepped.
  • the contact pressure springs 80 and 81 are guided in the contact housing 68, and the contact housing 68 together with the contact bridges 76 and 77 can be moved transversely to the connecting plane of the two terminals 26 and 69 or connecting terminals 26 and 69.
  • the height of the contact areas 70 and 71 depends on the width of the contact rails 72 and 73.
  • the contact rails 72 and 73 run, as can be seen from FIG. 1, parallel to the connecting line of the two connecting terminals 26 and 69.
  • the switching device works as follows:
  • Figures 1, 3 and 4 show the switching device in the switched-off state, that is to say in the state when the fuse cartridge 18 has been removed.
  • the contact areas or contact points 70 and 71 are switched off and the contact plate 65 is in the position shown in solid lines in FIG. 3, in which it rotates around the projection 67 or rests there rotatably against the underside of the plate 65.
  • the bevel 64 bears against the nose 63 of the lever 61, and if the switch toggle is to be pivoted from the position shown in FIG. 4, that is to say the switch-off position, to the switch-on position, then this should occur due to the movement of the contact point 53 and the movement of the projection 62 caused thereby, the nose in FIG.
  • the switch-on position in which the switching handle 47 is pivoted clockwise, the switching mechanism assumes a first stable position, which is influenced by the angle ⁇ ; from this first stable position, the switching mechanism reaches the switch-off position, a dead center position being overcome, after which the position shown in FIG. 4 is reached in a snap.
  • phase P runs from the connecting terminal 79a via the rail 75a, the contact bridge 76 to the rail 75b and the strand 75c, to the plate 65 and this to the fuse 18.
  • the current flows from there via the cup 31 and the element 30 to the bend 24 and to the connecting line 25 to the terminal 26.
  • the current flow in the neutral conductor runs through the terminal 69 via the rail 74a and the contact bridge 75 to the rail 74b, which is connected to the connecting terminal 26.

Landscapes

  • Fuses (AREA)

Claims (18)

  1. Appareil de commutation (10) comportant deux points de contact (79a, 69) pour un conducteur de phase et un conducteur neutre, un mécanisme de commutation qui peut être actionné au moyen d'une manette de commande (45) aux fins d'ouvrir et de fermer les points de contact (74, 75, 78, 79) et un élément coupe-circuit (18) à fusible qui se monte dans un logement de l'appareil de commutation (10) et qui lors de sa mise en place ou lors de son retrait agit sur au moins un point de contact (74, 75, 78, 79) aux fins d'actionner celui-ci, caractérisé par le fait que le mécanisme de commutation comporte un levier à bras double (56) rotatif dont le premier bras (55) est couplé à la manette de commande (45) et le deuxième bras (57) est couplé aux points de contact (74, 75, 78, 79), le mécanisme de commutation occupant une première position stable dans laquelle les points de contact sont fermés et une deuxième position stable dans laquelle les points de contact sont ouverts et par le fait qu'un levier à fourche qui comporte un premier et un deuxième bras de fourche (60, 61) est monté tournant sur l'axe du levier à bras double (56), levier à fourche dont le premier bras de fourche (61) est couplé à l'élément coupe-circuit (18) et dont le deuxième bras de fourche (60) est couplé au mécanisme de commutation de manière telle que lorsqu'on retire l'élément coupe-circuit à fusible le mécanisme de commutation soit amené dans la deuxième position stable ou soit maintenu dans celle-ci.
  2. Appareil de commutation selon la revendication 1, caractérisé par le fait que la manette de commande est couplée au premier bras (55) du levier à bras double (56) par l'intermédiaire d'un étrier (53) et par le fait que le deuxième bras de fourche (60), par un prolongement (62), fait saillie sur la trajectoire de déplacement de l'étrier (53) de telle sorte que, lorsqu'on retire l'élément coupe-circuit (18) à fusible l'étrier et avec lui le mécanisme de commutation soit maintenu dans la position d'ouverture.
  3. Appareil de commutation selon la revendication 2, caractérisé par le fait que dans la région de leur point d'attache, les bras de fourche comportent un prolongement (58) en forme d'axe sur lequel le levier à bras double est monté avec possibilité de rotation limitée.
  4. Appareil de commutation selon l'une des revendications précédente, caractérisé par le fait que dans la région du pied (19) de l'élément coupe-circuit (18) à fusible un bras de commande (plaque de contact 65) est monté avec possibilité de déplacement transversalement audit élément coupe-circuit, lequel bras de commande agit sur le premier bras de fourche (61) de manière à le maintenir dans la deuxième position stable du mécanisme de commutation lorsque l'élément coupe-circuit (18) à fusible est retiré et à le libérer lors de la mise en place dudit élément coupe-circuit.
  5. Appareil de commutation selon la revendication 4, caractérisé par le fait que le bras de commande (65) est monté pivotant à son extrémité opposée au premier bras de fourche.
  6. Appareil de commutation selon la revendication 5, caractérisé par le fait que dans la région voisine du premier bras de fourche (61), le levier de commande présente une partie coudée (64) contre laquelle le bras de fourche prend appui.
  7. Appareil de commutation selon l'une des revendications précédentes, caractérisé par le fait que les points de contact comportent des éléments de contact mobiles (79, 78) qui, à des fins d'ouverture et de fermeture, peuvent être déplacés transversalement à la direction de mise en place de l'élément coupe-circuit (18) à fusible et transversalement au plan qui relie des bornes de connexion correspondantes.
  8. Appareil de commutation selon la revendication 7, caractérisé par le fait que les points de contact sont des points de contact doubles dont les éléments de contact fixes sont pontés chacun par un pontet (76, 77) qui porte les éléments de contact mobiles (79, 78).
  9. Appareil de commutation selon la revendication 8, caractérisé par le fait que les pontets de contact (76, 77) sont logés dans un boîtier de contact (68) qui peut se déplacer transversalement à la direction de montage de l'élément coupe-circuit (18) à fusible et par le fait que le deuxième bras du levier à bras double (56) est couplé au boîtier de contact.
  10. Appareil de commutation-selon la revendication 9, caractérisé par le fait que deux points de contact associés présentent chaque fois une distance différente par rapport au fond du boîtier.
  11. Appareil de commutation selon l'une des revendications précédentes, caractérisé par le fait qu'un élément calibré (35) est monté à l'intérieur du boîtier (11) abritant l'appareil de commutation, lequel élément calibré est pourvu d'une ouverture (37) dont les dimensions correspondent aux dimensions du pied de l'élément coupe-circuit (18) à fusible.
  12. Appareil de commutation selon la revendication 11, caractérisé par le fait que la face de l'élément calibré (35) qui est tournée vers l'arc comporte une paroi (42) perpendiculaire à la dite face qui sépare le mécanisme de commutation de la zone de l'élément coupe-circuit (18) à fusible et s'engage entre les bras de fourche (60, 61).
  13. Appareil de commutation selon l'une des revendications précédentes, caractérisé par le fait qu'il est prévu sur la face de l'élément calibré (35) qui est tournée vers l'élément coupe-circuit à fusible au moins une colonnette (38) qui s'étend jusqu'à la paroi frontale antérieure du boîtier (11) et sur laquelle sont portées les caractéristiques de l'élément coupe-circuit (18) à fusible.
  14. Appareil de commutation selon l'une des revendications précédentes, caractérisé par le fait que la partie de l'élément coupe-circuit (18) à fusible qui fait saillie hors du boîtier est entourée par une coiffe (31, 32) qui porte sur sa surface extérieure au moins un têton (30) qui coopère avec une surface inclinée (29) du boîtier de manière telle que lorsqu'on tourne la coiffe, le têton glisse sur la surface inclinée et qu'ainsi la coiffe déplace l'élément coupe-circuit à fusible dans la direction de son axe longitudinal.
  15. Appareil de commutation selon la revendication 14, caractérisé par le fait qu'il est prévu à l'intérieur du boîtier (11) un élément de guidage (23) sur lequel la surface inclinée (29) est aménagée, par le fait que l'élément de guidage (23) est relié à l'une des bornes de connexion (26) de l'appareil de commutation et par le fait que l'élément de guidage (23) entoure et guide une partie en matériau électro-conducteur d'un élément formant enveloppe.
  16. Appareil de commutation selon la revendication 14, caractérisé par le fait que l'élément élément formant enveloppe (31) en matériau électro-conducteur est entouré sur sa face extérieure par une coiffe (32) en matériau électro-isolant dont la surface extérieure porte des oreilles (33, 34) qui font saillie radialement et servent à tourner la coiffe et ainsi à déplacer l'élément coupe-circuit (18) à fusible.
  17. Appareil de commutation selon l'une des revendications précédentes, caractérisé par le fait qu'il est prévu sur le côté de l'ouverture (17) destinée à recevoir l'élément coupe-circuit (18) à fusible un bossage (43) dans lequel le levier de commande (45) est monté pivotant.
  18. Appareil de commutation selon l'une des revendications précédentes, caractérisé par le fait que la forme extérieure du boîtier (11) est celle d'un T et par le fait que qu'il est prévu dans la barrette transversale du T un plan de joint (15) au niveau duquel le boîtier (11) est subdivisé en une partie de boîtier (12) inférieure et une partie de boîtier (13) supérieure.
EP90113497A 1989-07-22 1990-07-14 Appareil de commutation électrique Expired - Lifetime EP0410235B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3924371 1989-07-22
DE3924371A DE3924371A1 (de) 1989-07-22 1989-07-22 Elektrisches schaltgeraet

Publications (3)

Publication Number Publication Date
EP0410235A2 EP0410235A2 (fr) 1991-01-30
EP0410235A3 EP0410235A3 (en) 1992-07-08
EP0410235B1 true EP0410235B1 (fr) 1994-09-28

Family

ID=6385668

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90113497A Expired - Lifetime EP0410235B1 (fr) 1989-07-22 1990-07-14 Appareil de commutation électrique

Country Status (2)

Country Link
EP (1) EP0410235B1 (fr)
DE (2) DE3924371A1 (fr)

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1249382B (fr) *
FR1332034A (fr) * 1961-12-21 1963-12-16
US3474373A (en) * 1967-06-22 1969-10-21 Ite Imperial Corp Fuse holder including coordinated operating means between fuse insertion and an associated circuit breaker device
DE2722279C3 (de) * 1977-05-17 1981-07-23 Christian Geyer GmbH & Co, 8500 Nürnberg Sicherungsschalter
NL7712994A (nl) * 1977-11-25 1979-05-29 Nl Weber Mij Smeltpatroonhouder met ingebouwde tuimel- schakelaar.
FR2452776A1 (fr) * 1979-03-30 1980-10-24 Hager Electro Perfectionnements aux interrupteurs munis d'un coupe-circuit interieur a cartouche fusible
DE2946874A1 (de) * 1979-11-21 1981-05-27 Christian Geyer GmbH & Co, 8500 Nürnberg Schaltersicherung
FR2508701A1 (fr) * 1981-06-30 1982-12-31 Legrand Sa Coupe-circuit a prehenseur et interrupteur de sectionnement
FR2508700A1 (fr) * 1981-06-30 1982-12-31 Merlin Gerin Coupe-circuit a sectionnement du neutre
FR2514942A1 (fr) * 1981-10-21 1983-04-22 Hager Electro Perfectionnements aux interrupteurs electriques actionnes par une manette oscillante et munis d'un logement pour une cartouche fusible
DE3445285C1 (de) * 1984-12-12 1986-04-30 Lindner Gmbh, Fabrik Elektrischer Lampen Und Apparate, 8600 Bamberg Sicherungsschalter
NL8700770A (nl) * 1987-04-01 1988-11-01 Hollandse Apparatenfab Gecombineerde patroonhouder en lastschakelaar.
DE8801347U1 (de) * 1988-02-04 1988-05-26 Lindner Gmbh, Fabrik Elektrischer Lampen Und Apparate, 8600 Bamberg Elektrischer Schmelzsicherungsschalter
DE8802457U1 (de) * 1988-02-25 1988-05-05 Lindner Gmbh, Fabrik Elektrischer Lampen Und Apparate, 8600 Bamberg Schalter-Sicherungseinheit aus einem Lastschalter und einem NH-Sicherungstrenner

Also Published As

Publication number Publication date
DE3924371A1 (de) 1991-01-24
EP0410235A2 (fr) 1991-01-30
EP0410235A3 (en) 1992-07-08
DE59007314D1 (de) 1994-11-03

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