EP0038289A1 - Propulsion d'énergie pour appareils de commutation - Google Patents

Propulsion d'énergie pour appareils de commutation Download PDF

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Publication number
EP0038289A1
EP0038289A1 EP81730037A EP81730037A EP0038289A1 EP 0038289 A1 EP0038289 A1 EP 0038289A1 EP 81730037 A EP81730037 A EP 81730037A EP 81730037 A EP81730037 A EP 81730037A EP 0038289 A1 EP0038289 A1 EP 0038289A1
Authority
EP
European Patent Office
Prior art keywords
support plate
power drive
switching device
housing
circuit breaker
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
EP81730037A
Other languages
German (de)
English (en)
Other versions
EP0038289B1 (en
Inventor
Gerd Dr. Kummerow
Werner Troebel
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Priority to AT81730037T priority Critical patent/ATE6392T1/de
Publication of EP0038289A1 publication Critical patent/EP0038289A1/fr
Application granted granted Critical
Publication of EP0038289B1 publication Critical patent/EP0038289B1/de
Expired 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
    • H01H71/66—Power reset mechanisms
    • H01H71/70—Power reset mechanisms actuated by electric motor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H2003/028—Rotating knob or lever or tumbler that can be turned or pushed by hand in only one direction, e.g. by making inaccessible one side of a tumbler
    • 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
    • H01H71/56—Manual reset mechanisms which may be also used for manual release actuated by rotatable knob or wheel
    • H01H2071/565—Manual reset mechanisms which may be also used for manual release actuated by rotatable knob or wheel using a add on unit, e.g. a separate rotary actuator unit, mounted on lever actuated circuit breakers
    • 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
    • H01H71/66—Power reset mechanisms
    • H01H2071/665—Power reset mechanisms the reset mechanism operating directly on the normal manual operator, e.g. electromagnet pushes manual release lever back into "ON" position
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/227—Interlocked hand- and power-operating mechanisms

Definitions

  • the invention relates to a power drive for electrical switching devices, in particular low-voltage circuit breakers, with an actuating member and with a support plate fastened to a housing of the switching device for drive parts interacting with the actuating member.
  • this object is achieved in that the support plate can be positively centered on the housing of the switching device by cutouts and / or bends. These cutouts or bends interact with a corresponding contour or profile of the side of the switching device to which the power drive is to be attached. By simply placing the power drive on this side of the switch device is therefore already in the correct position, in which the mounting holes of the support plate of the power drive and the switching device are aligned.
  • the switchgear has a symmetrical design on its side facing the power drive, as is generally the case with low-voltage circuit breakers with an insulating housing and an actuating handle protruding therefrom, there could possibly be a doubt as to whether the power drive in one or around 180 ° the rotated position is to be attached.
  • This difficulty can be avoided in that an elevation which is attached to the front of the housing of the switching device corresponds to a recess in the support plate when the power drive is correctly attached.
  • the off-center elevation need not be a permanent or fixed component of the housing of the switching device. Rather, attachments or attachable parts, e.g. B. a raised label.
  • screws are generally used to connect the power drive to the switching device.
  • the aligned position of the fastening holes achieved by the invention can be used to the effect that the fastening is carried out by screws which simultaneously connect an upper part and a lower part of the housing of the switching device to one another.
  • FIG. 1 shows a longitudinal section through a motor drive along the line I-I in FIG. 2.
  • FIG. 2 is a view of the motor drive in the direction of arrow II in FIG. 1.
  • Fig. 3 the motor drive is shown in a section along the line III-III in Fig. 1.
  • FIG. 4 A cross section along the line IV-IV in FIG. 1 is shown in FIG. 4.
  • FIG. 5 A detail of the connection of the circuit breaker to the motor drive is shown in FIG. 5.
  • FIG. 6 A detail of the attachment of a cap to a support plate is shown in FIG. 6.
  • Fig. 7 shows a rotary handle for manual operation of the motor drive in emergencies.
  • Fig. 1 the outline of a low-voltage circuit breaker 1 belonging to the design of the compact switch is shown in dash-dot lines in the version with an insulating housing and rocker arm drive.
  • the circuit breaker 1 comprises a housing 2, the upper part of which is offset by a step 3 each and which has a central elevation 4 which surrounds an operating handle 5. This is placed on a rocker arm 6, which is pivotable about a pivot bearing 7. The remaining components of the circuit breaker 1 are not shown.
  • a raised label 10 (FIG. 5) is attached, which extends almost to the edge of the upper part 23 of the housing 2.
  • a lateral bend 11 of a support plate 12 made of sheet metal, which also runs there, is provided with a recess 13, while the opposite bend 14 (FIG. 4) is designed without a recess.
  • the support plate 12 can only be attached to the circuit breaker in the position shown, but not in a position rotated by 180 °.
  • the support plate 12 is also provided with angle pieces 15 and 16 which are transverse to its longitudinal direction and have legs 17 and 18 with recesses 20 and 21 resting on the upper part of the housing 2.
  • the recesses are intended for the passage of screws 22 which, with a corresponding length, not only fasten the support plate 12 to the housing of the circuit breaker 1, but also connect the upper part 23 and the lower part 24 of the circuit breaker 1 (FIG. 5) to one another.
  • welded angles molded angles or spacers can also be used.
  • the support plate 12 is part of a motor drive designated as a whole by 25.
  • a total of four guide tabs 26 are pressed out of the surface lying parallel to the front side of the circuit breaker 1, which grip around a slide 27 at its edges and thereby guide it longitudinally displaceably on the support plate 12, as is indicated by a double arrow 30 in FIGS. 1 and 2 .
  • the slide 27 has a window-like opening 28 from which two tabs 31 perpendicular to the longitudinal extension of the slide 27 are pressed out at right angles. Between these tabs 31 there is a cylindrical body 32 made of a plastic, the cylinder axis of which is parallel to the plane of the slide 27 and the axis of the pivot bearing 7 of the rocker arm 6.
  • the cylindrical body 32 has a recess, the shape of which corresponds to the end of the operating handle 5, so that the cylindrical body 32 can be pushed onto the operating handle 5.
  • the areal contact between the cylindrical body 32 and the actuating handle 5 ensures a low specific stress on the material of the Operating handle.
  • the cylindrical body 32 is flattened on its surfaces which do not come into contact with the tabs 31 during the switching operations.
  • the upper flattened area 33 is opposite a guide track 34, which is pressed out on the support plate 12 by a punching process. 2 shows that elongated openings 35 are provided on both sides of the guideway 34. These are first punched out of the support plate 12 in order then to be able to form the remaining strips in such a way that the guide track is formed with a radius corresponding to the distance between the pivot bearing 7 and the rocker arm 6.
  • a motor gear unit 36 is also arranged on the support plate 12, a motor 37 with an axis running parallel to the support plate 12 and the gear 38 with an axis of rotation of a crank arm 41 perpendicular to the support plate 12 being arranged.
  • Screws 40 (FIG. 2) are used to fasten the motor gear unit 36 to the support plate 12.
  • a crank pin 42 of the crank arm 41 engages between the legs 43 of a U-shaped leaf spring 44 connected to the slide 27.
  • the legs 43 are attached to a mounting body 45, which in turn rigid with the slide, z. B. is connected by screws, rivets or rivets.
  • the mounting body 45 can, for. B. be a casting, in the manufacture of which the ends of the legs 43 of the leaf spring 44 are cast. Instead, a metal block can also serve as the mounting body, in which the leaf spring is fastened by clamping or by a pin. In addition to a rigid attachment, a limited movement of the leg ends of the leaf spring 44 can also be considered.
  • a fort is formed on the slide 27 set. 46 in connection with two limit switches 47 and 48.
  • microswitches serve as limit switches, the actuating plungers 50 and 51 of which can be actuated by levers 52 and 53 pivotably mounted on the housings of the microswitches.
  • An angular position of the limit switches 47 and 48 ensures that the extension 46 alternates with the lever 52 of the limit switch 47 or the lever 53 of the limit switch 48 in when the slide 27 moves into its end positions according to the double arrow 30 in FIG. 2 Contact occurs and the actuating plunger 50 or 1 acts on this limit switch.
  • the extension 46 is provided with a step 49, through which two mutually offset work surfaces for the actuating levers 52 and 53 arise. Due to the position of the step on the extension 46, the switching stroke can be determined despite the unchanged position of the limit switches 47 and 48.
  • this arrangement allows an overflow, ie. H. the extension 46 cannot damage the levers 52 and 53 if it moves a little further after contact with the levers due to the stopping of the motor 37 and thus the slide 27.
  • the desired angular position of the limit switches 47 and 48 is at the same time ensured with the arrangement of the levers 52 and 53 pointing in opposite directions in a simple manner in that two identical limit switches are placed on top of one another rotated by 180 ° and then fastened to the support plate 12 with two screws 54, which extend through fastening holes arranged diagonally with respect to the rectangular shape of the limit switches.
  • a cap 64 made of insulating plastic. This is fastened to the support plate 12 by a snap fastening.
  • the cap 64 overlaps with its side walls 65 and 66 the lateral angled portions 11 and 14 of the support plate 12.
  • the latter has flaps 67 and 68 which are pressed out in an angular manner, behind which protrusions 70 and 71 of the side walls 65 and 66 engage.
  • the projection 71 is formed with sharp edges, while the opposite projection 70 is rounded.
  • An inclined surface 72 adjoining the projection 71 allows the cap to be pressed onto the support plate 12 for assembly until the projections 70 and 71 reach behind the tabs 67 and 68 and snap into place.
  • a small opening 74 is provided on one end face 73, through which an elongated auxiliary tool, for. B. can insert a designated rod or a suitable screwdriver.
  • auxiliary tool for. B. can insert a designated rod or a suitable screwdriver.
  • the width of the cap 64 is selected to be a small amount smaller than the width of the circuit breaker 1, and the support plate 12 is correspondingly narrower so that the cap 64 with its side walls 65 and 66 has the bends 11 and 14 the trag plate 12 can cover.
  • the undersize of the cap 64 relative to the circuit breaker 1 allows the. Remove the cap from the motor drive even if several circuit breakers are installed next to each other without space. A small gap of 1 or 2 mm is sufficient to bring the one side wall of the cap with its projection out of engagement with the associated tab of the support plate.
  • the slide 27 also fulfills another function, namely the display of the respective switching position of the circuit breaker 1.
  • the circuit breaker Labels 75 and 76 attached, e.g. B. "0" for the off position and "I" for the on position.
  • These markings can consist of printed, glued or embossed symbols with or without colored highlighting.
  • a further opening 80 which lies above the opening 77, is located in a part 81 of the cap 64 which is pulled down to a small distance 82 from the support plate, in order to ensure good visibility of the marking 75 or which is in each case below the opening 80 76 to ensure.
  • a rotary handle 84 for actuating the circuit breaker 1 in the event of failure of the auxiliary voltage required to operate the motor drive is placed on this.
  • the gear 38 includes a one-way clutch, which allows the crank arm 41 to be rotated by means of the rotary handle 84 without simultaneously rotating the motor 37.
  • One-way clutches are known per se and are available in a number of suitable designs.
  • the rotary handle 84 avoids any danger to the operating personnel which would otherwise be conceivable if an operator wishes to switch the circuit breaker 1 on or off by actuating the rotary handle 84 and at the same time the motor transmission unit 36 is started remotely.
  • the rotary handle 84 (FIG. 7) is provided on its side facing the user on both sides of a central web 87 with opposing oblique surfaces 88.
  • two gripping surfaces 90 are formed which run parallel to the axis of the shaft stump 83 and via which a torque can be introduced into the twist grip by means of the thumb and index finger.
  • the rotary handle 84 in connection with the mentioned one-way clutch has the essential advantage that the motor drive 25 does not have to be dismantled in the event of a failure of the auxiliary voltage to actuate the circuit breaker, and nevertheless a quick emergency actuation is possible.
  • the motor drive described acts in the following manner: starting from the switch-on position shown in the figures, the slide 27 is shifted to the right when the motor 37 is switched on by means of the crank 41 and the crank pin 42, the power transmission from the crank pin 42 via the leaf spring 44, one the tab 31 and the cylindrical body 32 on the betä Cleaning handle 5 of the circuit breaker 1 takes place.
  • the switch-off position is reached after the crank arm 41 has been rotated by approximately 180 °, the extension 46 runs against the actuating lever 52 of the limit switch 47 and thereby interrupts the supply circuit of the motor 37.
  • the leaf spring 44 enables tolerance compensation and thereby prevents excessive stress on the actuating handle 5. In the switching process described, there are no significant radial forces between the actuating handle 5 and the cylindrical body 32.
  • the guideway 34 of the support plate 12 is therefore subject to only a slight and accidental stress due to the upper flattening of the cylindrical body 32 and therefore does not require any special surface treatment. Accordingly, the cylindrical body 32 normally faces the guideway at a certain distance, so that no special precautions are required with regard to the tolerances either. Between the cylindrical body 32 and the tab 31 there is a line in the form of a flat surface and a large radius, which in connection with the selected pairing of the materials leads to a low specific stress. In particular, however, any locally concentrated and scraping stress is kept away from the actuating handle 5 by the attached cylindrical body 32.
  • the switching process takes place in the same manner, in that after the motor 37 is switched on again while the direction of rotation of the motor and thus the gear 38 and the crank 41 remains the same, the slide 27 is displaced in the opposite direction by a further 18.0 ° until it is reached of the switchover point of the circuit breaker, the limit switch 48 is actuated and the motor drive is stopped.
  • the leaf spring 44 ensures the Ubertra supply of the driving force and for a tolerance compensation when the slide 27 reaches the end position.

Landscapes

  • Breakers (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Relay Circuits (AREA)
  • Brushes (AREA)
  • Electronic Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)
EP81730037A 1980-04-15 1981-03-19 Power drive for electric switching devices Expired EP0038289B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81730037T ATE6392T1 (de) 1980-04-15 1981-03-19 Kraftantrieb fuer elektrische schaltgeraete.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803014826 DE3014826A1 (de) 1980-04-15 1980-04-15 Kraftantrieb fuer elektrische schaltgeraete
DE3014826 1980-04-15

Publications (2)

Publication Number Publication Date
EP0038289A1 true EP0038289A1 (fr) 1981-10-21
EP0038289B1 EP0038289B1 (en) 1984-02-22

Family

ID=6100322

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81730037A Expired EP0038289B1 (en) 1980-04-15 1981-03-19 Power drive for electric switching devices

Country Status (3)

Country Link
EP (1) EP0038289B1 (fr)
AT (1) ATE6392T1 (fr)
DE (1) DE3014826A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2247567A (en) * 1990-08-30 1992-03-04 Mk Electric Ltd Circuit breaker motorised actuating device
EP0506066A1 (fr) * 1991-03-27 1992-09-30 Moeller GmbH Entraînement motorisé pour appareils de commutation électriques, notamment disjoncteurs
EP0561293A1 (fr) * 1992-03-17 1993-09-22 Moeller GmbH Couvercle pour la face frontale d'appareils de commutation électriques à commande d'un levier oscillant, en particulier pour disjoncteurs de puissance à basse tension
FR2701595A1 (fr) * 1993-02-16 1994-08-19 Merlin Gerin Disjoncteur à bloc de télécommande adaptable.
CN109494131A (zh) * 2018-11-28 2019-03-19 苏州景泰电气有限公司 电动操作机构

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10040713B4 (de) * 1999-08-21 2012-05-16 Marquardt Gmbh Elektrischer Schalter
DE102008004917B4 (de) 2008-01-18 2009-10-29 Moeller Gmbh Fernantrieb zur Betätigung eines elektrischen Schalters

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1252302B (fr) * 1962-11-08
US3328731A (en) * 1965-06-14 1967-06-27 Huska Paul Combined electrical circuit breaker and actuator
CH489894A (de) * 1968-04-18 1970-04-30 Carl Maier & Cie Elek Sche Sch Schaltschütz mit Grundplatte
EP0006962A1 (fr) * 1978-04-05 1980-01-23 Siemens Aktiengesellschaft Dispositif moteur pour disjoncteur de puissance basse tension

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1252302B (fr) * 1962-11-08
US3171920A (en) * 1962-11-08 1965-03-02 Gen Electric Motor operating mechanism for use with an electric circuit breaker
US3328731A (en) * 1965-06-14 1967-06-27 Huska Paul Combined electrical circuit breaker and actuator
CH489894A (de) * 1968-04-18 1970-04-30 Carl Maier & Cie Elek Sche Sch Schaltschütz mit Grundplatte
EP0006962A1 (fr) * 1978-04-05 1980-01-23 Siemens Aktiengesellschaft Dispositif moteur pour disjoncteur de puissance basse tension

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2247567A (en) * 1990-08-30 1992-03-04 Mk Electric Ltd Circuit breaker motorised actuating device
EP0506066A1 (fr) * 1991-03-27 1992-09-30 Moeller GmbH Entraînement motorisé pour appareils de commutation électriques, notamment disjoncteurs
EP0561293A1 (fr) * 1992-03-17 1993-09-22 Moeller GmbH Couvercle pour la face frontale d'appareils de commutation électriques à commande d'un levier oscillant, en particulier pour disjoncteurs de puissance à basse tension
US5362933A (en) * 1992-03-17 1994-11-08 Klockner Moeller Gmbh Electrical switching devices, in particular low voltage power circuit breakers
FR2701595A1 (fr) * 1993-02-16 1994-08-19 Merlin Gerin Disjoncteur à bloc de télécommande adaptable.
EP0612092A1 (fr) * 1993-02-16 1994-08-24 Schneider Electric Sa Disjoncteur à bloc de télécommande adaptable
CN109494131A (zh) * 2018-11-28 2019-03-19 苏州景泰电气有限公司 电动操作机构

Also Published As

Publication number Publication date
ATE6392T1 (de) 1984-03-15
EP0038289B1 (en) 1984-02-22
DE3014826A1 (de) 1981-10-22

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