EP0204905A2 - Disjoncteur automatique - Google Patents

Disjoncteur automatique Download PDF

Info

Publication number
EP0204905A2
EP0204905A2 EP86103897A EP86103897A EP0204905A2 EP 0204905 A2 EP0204905 A2 EP 0204905A2 EP 86103897 A EP86103897 A EP 86103897A EP 86103897 A EP86103897 A EP 86103897A EP 0204905 A2 EP0204905 A2 EP 0204905A2
Authority
EP
European Patent Office
Prior art keywords
outer housing
switching
switch according
circuit breaker
auto switch
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.)
Withdrawn
Application number
EP86103897A
Other languages
German (de)
English (en)
Other versions
EP0204905A3 (fr
Inventor
Karl Dipl.-Ing. Faber (Fh)
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.)
ASEA BROWN BOVERI AKTIENGESELLSCHAFT
Original Assignee
Asea Brown Boveri AG Germany
BBC Brown Boveri AG Germany
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 Asea Brown Boveri AG Germany, BBC Brown Boveri AG Germany filed Critical Asea Brown Boveri AG Germany
Publication of EP0204905A2 publication Critical patent/EP0204905A2/fr
Publication of EP0204905A3 publication Critical patent/EP0204905A3/fr
Withdrawn legal-status Critical Current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
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/025—Constructional details of housings or casings not concerning the mounting or assembly of the different internal parts
    • H01H71/0257—Strength considerations
    • 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
    • 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
    • H01H9/02—Bases, casings, or covers
    • H01H9/04—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
    • H01H9/042—Explosion-proof cases

Definitions

  • the invention relates to a circuit breaker according to the preamble of claim 1.
  • Self-switches are electrical switching devices with current-limiting switching elements which interrupt the current flow in the event of a response, that is to say in the event of a short circuit, fault current or overcurrent.
  • Mainly such self-switches are used as so-called circuit breakers, which are designed for overcurrent or short-circuit current limitation according to the respective conductor cross-section.
  • An explosion-proof circuit breaker is known from DE-PS 20 52 040. It is a flameproof fuse in a capsule with two fixed internal contacts which are connected to external electrical connection parts, and with a fuse insert arranged in the capsule, the contact pieces of which are in contact with the fixed internal contacts in the operating state.
  • the capsule consists of a housing and a plate, which, as a fuse link, accommodate a circuit breaker with a self-timer, which has at least one outstanding switching element that can be actuated indirectly from outside the housing, the axis leading from the inside of the housing to the outside being flame-proof and displaceable in the Wall of the housing is arranged.
  • the switching element which is movable about an axis of rotation on the known circuit breaker, is actuated in the known explosion-protected version by means of a sliding element.
  • Such an actuating device must be manufactured very carefully in order to reliably rule out malfunctions in the operating case.
  • the invention has for its object to provide a circuit breaker of the type mentioned, which is as simple as possible, functionally reliable and inexpensive to manufacture.
  • the switching element is designed as a rocker arm, the axis of rotation of which is aligned with the axis of rotation of the switching lever of the switching device inserted into the outer housing.
  • the rocker arm is connected to a selector shaft, which can be rotated through a side wall of the outer housing and is connected there with switching elements that are positively engaged with the shift lever of the switching device used, thus ensuring that the pivoting movement of the rocker arm is free of play and with low friction Switch lever of the switching device transmits.
  • the outer housing has a recess which is accessible from its rear and which serves to accommodate the switching device.
  • the design of the recess is adapted to the cross-sectional profile of the switching device.
  • a base plate is provided, which is potted using synthetic resin.
  • the switching elements in the interior of the circuit breaker according to the invention are designed so that when the switching device is inserted into the outer housing, its switching lever automatically engages with the switching elements and its contact terminals connect automatically to the contact rails embedded in the outer housing.
  • the control shaft is cranked like a crank within the outer housing.
  • the cranked end of the shift shaft engages with a pivot pin which, at the free end of the shift lever, penetrates it in a transverse bore arranged parallel to its axis of rotation.
  • the pivot pin is designed as a cylindrical pin which is mounted in a cylindrical recess in the selector shaft. This type of design allows the compensation of manufacturing-related dimensional tolerances.
  • a U-shaped profiled clamping piece with a retaining tab adjoining an end face is clamped onto the free end of the shift lever, which receives and fixes the pivot pin protruding at least on one side of the shift lever in a recess provided for this purpose.
  • the selector shaft is made in two parts. According to this embodiment of the invention, the selector shaft consists of a straight rotating part and the retaining tab of the clamping piece adjoining it at right angles.
  • the retaining tab has a corresponding recess which engages around the rotating part in a form-fitting manner. To secure this rigid connection, it is provided to screw or glue the retaining tab to the rotating part.
  • the straight turned part is expanded on one side to form a collar that serves as an axial guide for the turned part and is connected to the retaining tab, which is thereby held at a distance from the side wall of the outer housing.
  • the length of the turned part is like this chosen that the opposite end of the rotating part also protrudes and holds the rocker arm connected there at a defined distance from the outer wall of the outer housing.
  • the outer housing for the installation of a plurality of, that is to say at least two, shading devices which can be actuated simultaneously via the already mentioned control lever. According to the invention, it is thus possible to design multiple switching blocks in an explosion-proof design.
  • the base plate which covers the recess in which the switching devices are used
  • the attachment to known mounting rail systems for. B. top-hat rail
  • the outer housing has bores which receive screws for fastening the self-switch to a wall.
  • a commercially available circuit breaker 11 is used, on the upper side of which an actuation toggle 12 is offset and opposite it and two terminals 13 and 14 are arranged on both sides thereof.
  • the circuit breaker 11 is a commercially available circuit breaker, for example an S 160 circuit breaker from Brown, Boveri & Cie Aktiengesellschaft.
  • the explosion-proof housing is a housing made of plastic, which, as will be shown in more detail below, is adapted in its interior 15 to the outer contour of the circuit breaker 11 and is cup-like open at the bottom. In the lower area, the housing 10 has a circumferential recess 16, on which a plate 17 is placed, which is then cast in by means of casting resin 18.
  • connection terminals 13 and 14 are pressed against connection lugs 19 and 20 by means of an intermediate piece 21, so that an electrical contact is achieved between the connection lugs 19 and the connection terminals 13 and 20 and 14, respectively. So that the contact force is sufficiently large, the intermediate layer 21 is made of elastic material.
  • the connecting lugs 19 and 20 are pressure-tightly passed through a recess 22 and 23 in the housing 10 and end in the upper region at connecting terminals 24 and 25, via which the circuit breaker can be fastened to connecting lines (not shown in more detail).
  • the housing has flange-like projections 26 and 27 on both sides, so that the housing with the circuit breaker therein or the explosion-proof housing can be attached to a base plate.
  • the invention lies in the actuation of the circuit breaker 11 inside the explosion-proof housing.
  • FIG. 2 The pressure-resistant housing 10 can be seen in the upper region according to the section line II-II. Inside the explosion-proof or pressure-proof housing 10 is the pressure-proof space and in the pressure-proof space the miniature circuit breaker 11.
  • This miniature circuit breaker 11 has semicircular projections 30 and 31 on both sides of its broad sides and of these projections the projection 31 can be seen in FIG. Between the two projections can be seen in Figure 2, the actuating toggle 12, which has grooves 32 and 33 on both sides.
  • a U-shaped bracket 34 is snapped into these two grooves 32 and 33.
  • This U-shaped bracket 34 is made of plastic and has at the leg ends on the inside of projections 35 and 36, which are designed so that they can engage in the grooves 33 and 32.
  • a pin 37 is fixed on the actuating knob 12, the pin 37, as can be seen from FIG. 2, projecting beyond the actuating knob on both sides. By means of the bracket 34, the pin 37 is pressed firmly against the upper surface of the actuating knob 12.
  • a crank element 40 is guided through the housing and is composed of a shaft part 41 and a guide element 42 by means of a rivet connection 43.
  • the rivet connection 43 presses the guide part 42 against the shaft part 41 in such a way that the two parts form a firm connection with one another.
  • the shaft part 41 is passed through the inner bore 44 of a bushing 45, which means Tongue and groove 46 is held in an opening 47 in the housing 10.
  • the shaft part 41 protrudes outwards from the housing 10 and an L-shaped lever 48 is fastened to the shaft part 41 and covers one side 49 of the upper side of the explosion-protected housing 10.
  • the axis of rotation MM of the shaft part and thus of the guide part 42 and the lever 48/49 is identical to the axis of rotation DD of the switch toggle 12 in the interior of the circuit breaker.
  • the guide part 42 has a U-shaped receiving groove 50 which is formed on a flat region 51 of the guide part.
  • One recognizes two walls 52 and 53 inclined approximately in a V-shape with respect to one another, which form an opening angle alpha with one another, which is open towards the central axis M.
  • the pin 37 engages in this interior space 50, which is formed by the two walls 52 and 53, whereby the pin 37 connects to the guide part 42 in a form-fitting manner. If the lever 49 is now moved, then the rotary part 41 rotates and with the rotary part 41 the guide part 42 and, via the two walls 52 and 53, the pin 37 and thereby the switching knob 12 can be actuated. It is particularly important that the axis of rotation of the lever 48/49 located on the outside coincides with the axis of rotation of the switch toggle inside the circuit breaker.
  • FIG. 5 shows a further variant of the embodiment according to FIG. 2.
  • the upper region of the guide part 42 is different.
  • the guide part 60 has a flat region 61 which corresponds to the flat region 51 identically.
  • an extension 62 covering the entire switch or the switching knob 12 is formed on the guide part 60 or on the flat region 61, which in principle has the two walls 52 and 53, which, however, project beyond the entire switching knob. So that the switch itself is not hindered by the two walls 52 and 53, the extension 62 has a recess 63, the width of which corresponds to the width of the switch knob 12.
  • the pin 37 is not only guided on the left, as in the embodiment according to FIG. 2, but also on the right, which leads to better power transmission from the guide part 60 to the pin, in that the power transmission at both ends, both of which are the shift knobs 12 tower, can be done.
  • the invention is described on the basis of a single-pole, explosion-proof circuit breaker.
  • a single-pole, explosion-proof circuit breaker there is also the possibility of inserting three adjacent circuit breaker poles in a housing 10. Then the extension 62 on the guide part 60 would have to be guided over all circuit breakers, which is in principle possible without any problems. If necessary, it is advisable to provide a rotary axis bushing, as shown on the left in FIG. 2, on the right side, so that the actuation of the switching device from the outside does not lead to deformations inside the explosion-proof housing.
EP86103897A 1985-06-13 1986-03-21 Disjoncteur automatique Withdrawn EP0204905A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3521153 1985-06-13
DE19853521153 DE3521153A1 (de) 1985-06-13 1985-06-13 Selbstschalter

Publications (2)

Publication Number Publication Date
EP0204905A2 true EP0204905A2 (fr) 1986-12-17
EP0204905A3 EP0204905A3 (fr) 1989-06-28

Family

ID=6273139

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86103897A Withdrawn EP0204905A3 (fr) 1985-06-13 1986-03-21 Disjoncteur automatique

Country Status (2)

Country Link
EP (1) EP0204905A3 (fr)
DE (1) DE3521153A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2622734A1 (fr) * 1987-11-04 1989-05-05 Legrand Sa Boitier pour appareil de coupure, notamment disjoncteur ou interrupteur, utilisable en atmosphere explosible
DE102012111391A1 (de) 2012-11-26 2014-05-28 R.Stahl Schaltgeräte GmbH Explosionsgeschützter Leitungsschutzschalter
CN115910715A (zh) * 2022-12-26 2023-04-04 明迈防爆技术(上海)有限公司 一种对防爆箱内的微型断路器进行合闸的防爆旋钮

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8805069U1 (fr) * 1988-04-16 1988-07-14 Bbc Brown Boveri Ag, 6800 Mannheim, De
AT505602A1 (de) 2006-09-01 2009-02-15 Moeller Gebaeudeautomation Gmb Schaltgerät

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2029599A (en) * 1934-10-22 1936-02-04 Appleton Electric Co Means for actuating enclosed electric switches
US2050854A (en) * 1933-04-10 1936-08-11 Crouse Hinds Co Explosionproof switch box
US2132624A (en) * 1935-07-01 1938-10-11 Square D Co Enclosed circuit breaker
US2237530A (en) * 1938-11-23 1941-04-08 Crouse Hinds Co Switch actuating mechanism
DE2052040B2 (de) * 1970-10-23 1979-01-25 R. Stahl Gmbh & Co, 7000 Stuttgart Druckfest geschützte Sicherung

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD31257A (fr) *
DD45988A (fr) *
US2154821A (en) * 1937-06-30 1939-04-18 Crouse Hinds Co Explosionproof switch housing
US2287650A (en) * 1940-05-31 1942-06-23 Appleton Electric Co Explosionproof switch device
DE930396C (de) * 1941-05-09 1955-07-14 Aeg Antriebswelle fuer Geraete in explosionsgeschuetzten Gehaeusen
DE872800C (de) * 1949-11-29 1953-04-09 Siemens Ag Elektrisches Steuerschaltgeraet fuer explosions- bzw. schlagwetter-gefaehrdete Raeume
GB829993A (en) * 1955-01-13 1960-03-09 Simplex Electric Co Ltd Improvements relating to flameproof electrical equipment
DE1082649B (de) * 1955-06-08 1960-06-02 Casp Arn Winkhaus Fa Wasserdichter Kippschalter
US2903541A (en) * 1957-05-24 1959-09-08 Crouse Hinds Co Switch housing
DE1850879U (de) * 1959-08-01 1962-05-03 Stahl R Fa Explosionsgeschuetzte elektrische schalteinrichtung.
BE628350A (fr) * 1962-02-14
US3264443A (en) * 1963-11-18 1966-08-02 Killark Electric Mfg Company Explosion-proof switch box assembly including reciprocal external actuator means
US3475576A (en) * 1967-07-20 1969-10-28 Square D Co Driving connection for independently mounted circuit breaker and operating handle
US3543096A (en) * 1968-02-05 1970-11-24 Systems Electronics Inc Method and apparatus for sensing and correcting an overloaded electrical circuit
DE2845503A1 (de) * 1978-10-19 1980-04-30 Bbc Brown Boveri & Cie Druckfest gekapseltes elektrisches schaltgeraet

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2050854A (en) * 1933-04-10 1936-08-11 Crouse Hinds Co Explosionproof switch box
US2029599A (en) * 1934-10-22 1936-02-04 Appleton Electric Co Means for actuating enclosed electric switches
US2132624A (en) * 1935-07-01 1938-10-11 Square D Co Enclosed circuit breaker
US2237530A (en) * 1938-11-23 1941-04-08 Crouse Hinds Co Switch actuating mechanism
DE2052040B2 (de) * 1970-10-23 1979-01-25 R. Stahl Gmbh & Co, 7000 Stuttgart Druckfest geschützte Sicherung

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2622734A1 (fr) * 1987-11-04 1989-05-05 Legrand Sa Boitier pour appareil de coupure, notamment disjoncteur ou interrupteur, utilisable en atmosphere explosible
DE102012111391A1 (de) 2012-11-26 2014-05-28 R.Stahl Schaltgeräte GmbH Explosionsgeschützter Leitungsschutzschalter
CN115910715A (zh) * 2022-12-26 2023-04-04 明迈防爆技术(上海)有限公司 一种对防爆箱内的微型断路器进行合闸的防爆旋钮
CN115910715B (zh) * 2022-12-26 2023-11-07 明迈防爆技术(上海)有限公司 一种对防爆箱内的微型断路器进行合闸的防爆旋钮

Also Published As

Publication number Publication date
DE3521153A1 (de) 1986-12-18
DE3521153C2 (fr) 1989-01-26
EP0204905A3 (fr) 1989-06-28

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