EP0514995A1 - Kompakte Einrichtung für die manuelle Kontrolle von arbeitenden Schaltern - Google Patents

Kompakte Einrichtung für die manuelle Kontrolle von arbeitenden Schaltern Download PDF

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Publication number
EP0514995A1
EP0514995A1 EP92201446A EP92201446A EP0514995A1 EP 0514995 A1 EP0514995 A1 EP 0514995A1 EP 92201446 A EP92201446 A EP 92201446A EP 92201446 A EP92201446 A EP 92201446A EP 0514995 A1 EP0514995 A1 EP 0514995A1
Authority
EP
European Patent Office
Prior art keywords
baseplate
handle
manual control
aperture
rod
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
EP92201446A
Other languages
English (en)
French (fr)
Other versions
EP0514995B1 (de
Inventor
Giampietro Tosi
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0514995A1 publication Critical patent/EP0514995A1/de
Application granted granted Critical
Publication of EP0514995B1 publication Critical patent/EP0514995B1/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
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/22—Interlocking, locking, or latching mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts
    • H01H9/223—Defeatable locking means
    • 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
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/28—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member
    • H01H9/285—Locking mechanisms incorporated in the switch assembly and operable by a key or a special tool
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/0006—Apparatus or processes specially adapted for the manufacture of electric switches for converting electric switches
    • 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
    • H01H3/08—Turn knobs
    • H01H3/10—Means for securing to shaft of driving mechanism

Definitions

  • This invention relates to a compact device for the manual control of operating switches.
  • Their constituent handle is generally rotatable between a position in which the switch is closed and a position in which the switch is open, elements being associated with it for its stable retention in these two positions.
  • An object of the present invention is to provide a manual control device both for switches and for switchgear cubicles which is extremely compact and of small overall size.
  • a further object is to provide such a device which although offering considerable safetu can with difficulty be disengaged or operated at the specific requirement of the operator alone.
  • a further object is to provide a device of simple construction which is easy and inexpensive to mount, while maintaining its strength and effectiveness.
  • a compact device for the manual control of operating switches comprising a handle mountable on a wall of switchgear containing a switch operated by rotating a rod provided with projecting elements which is able to be removably connected to an inner portion of said handle, and is rotatably associated with a baseplate, said rod being rotatable from a first position in which internal electrical contacts within said switchgear are open and in which it can be released from said handle, to a second position in which said internal electrical contacts are closed and in which it is locked to said handle, characterised in that within a part of said handle there is provided an aperture having lateral extensions and arranged to receive said rod and said projecting elements, on said baseplate there being positioned an elastic element which is aligned with said aperture and with said extensions provided in said handle when said baseplate is in a first position, and is superposed on and engaged with said rod and said projecting elements contained in said extensions when in a second position, said baseplate being recessed and being closable by
  • a particularly compact device for the manual control of operating switches is indicated overall by 10 and comprises essentially a handle 11 rotatably mounted on a cylindrical baseplate 12 of box structure which is fixed by screws 13 to a wall 14 of switchgear, shown only partly, containing a switch (not shown) operated by rotating an operating rod 20 which can be connected to said control device.
  • a plate 18 is fixed by screws 17 to a hollow part 15 of the handle 11 in its central portion 16, and centrally comprises a square aperture 19 which also extends into the central portion 16.
  • a square aperture 19 which also extends into the central portion 16.
  • the square aperture 19 in the plate 18 comprises recessed extensions 22 into which the pins 21 of the square operating rod 20 can be passingly inserted.
  • a series of enlarged cylindrical portions 23 which project radially inwards and comprise fixing holes such as the hole 24 or the screw 13, and further holed cylindrical portions 25 of lesser height than the preceding cylindrical portions 23 and arranged to receive fixing screws 26 for fixing a cover element 27 for the baseplate 12.
  • Correct positioning between the baseplate 12 and the cover element 27 is determined by the presence of an aperture 28 provided in the side edge wall of the baseplate and an appendix 29 projecting radially outwards from the cover element 27.
  • a flat wedge element 32 of triangular shape is provided on its opposing faces with two projecting portions 33 and 34 of shape complementary to that of the recess 31 but of different lengths. Specifically, the projecting portion 33 is of rather lesser length than the recess 31, whereas the projecting portion 34 differs only slightly from this recess in length.
  • the flat wedge element 32 acts as the element for disengaging the rod 20 from the control device.
  • a spring 35 essentially of elongate U-shape comprises central arched portions 36 projecting outwards from the U, and end portions 37 inclined outwards from the U.
  • the spring 35 is arranged within the recessed portion of the baseplate 12 so that the lower rounded end of the U abuts against the pin 30 while its inclined end portions 37 lie against the inwardly facing tip 38 of the fat wedge element 32.
  • the central arched portions 36 lie in correspondence with the aperture 19 in the plate 18, this spring acting as the engagement element for the operating rod 20 and its pins 21.
  • the cover element 27 arranged on the baseplate 12 has a radial slot 39 for receiving the projecting portion 34 of the flat wedge element 32.
  • the cover element 27 is provided in its outwardly projecting surface with a cross-shaped aperture 40 to be aligned with the square aperture 19 and with its recess extensions 22. From the aperture 40 there extends a cross-shaped lead-in element 41 with its inner walls 42 inclined so that they widen outwards to facilitate the insertion of the end of the operating rod 20 and its pins 21.
  • a pushbutton element 44 is provided in the top of the hollow part 15 of the handle 11 within a first cylindrical seat 43 such that its axis is essentially parallel to the axis of rotation of the handle 11, it being maintained in a raised position by an opposing spring 45 and holding by means of an inner screw 46 a plate 47 slidingly guided within the hollow part 15.
  • the plate 47 is provided lowerly with a tooth 48 arranged to engage in a slotted seat 49 in the baseplate 12.
  • In the side of the plate 47 there is provided at least one recess 50 which can be aligned with holes 51 provided in the hollow part 15 so as to receive a closure locking bolt, not shown.
  • the plate 47 also comprises a rear undercut 52 to receive a pin 53 of a lock 54, for example of cylinder type, positionable in a second shaped seat 55 provided in the body of the handle 11 essentially parallel to the first seat 43.
  • a lock 54 for example of cylinder type
  • the use of the manual control device according to the present invention is extremely simple and safe.
  • the handle 11 can be rotated between its two main operating positions.
  • the handle of the device according to the invention is therefore rotatable between a position in which the electrical contacts within the switchgear are open and a position in which they are closed.
  • This second position can be fixed by operating the pushbutton element 44 and inserting a locking bolt into the holes 51, and by further rotating the key 56.
  • the tooth 48 remains inserted in the seat 49 of the baseplate 12 and the pin 53 remains inserted in the undercut 52. Removal of the key prevents the the control device from being released.
  • a different arrangement is required if the user wishes to totally prohibit any intervention on the switchgear when live, ie when the operating rod is locked within the manual control device according to the present invention.
  • the greater-length projecting portion 34 is positioned in the radial recess 31 and the smaller-length projecting portion 33 is positioned within the radial slot 39. In this case if the flat wedge element 32 is pushed from the outside by the needle tool 57, it cannot move because the projecting portion 34 is engaged in the recess 31 of approximately equal length.
  • the present invention achieves a device for the manual control of operating switches which is safe and functional.
  • the lead-in element 41 can be formed of a height essentially similar to that of the switchgear wall 14.
  • the particular shape of the outwardly widening inclined inner walls 42 ensures comfortable and reliable insertion of the operating rod 20 even if this is not in its optimum position aligned with the aperture 19 in the control device.

Landscapes

  • Switch Cases, Indication, And Locking (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Controls For Constant Speed Travelling (AREA)
  • Switches With Compound Operations (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Lifting Devices For Agricultural Implements (AREA)
  • Harvester Elements (AREA)
EP92201446A 1991-05-24 1992-05-21 Kompakte Einrichtung für die manuelle Kontrolle von arbeitenden Schaltern Expired - Lifetime EP0514995B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI911434A IT1252318B (it) 1991-05-24 1991-05-24 Dispositivo compatto di comando manuale per interruttori di manovra
ITMI911434 1991-05-24

Publications (2)

Publication Number Publication Date
EP0514995A1 true EP0514995A1 (de) 1992-11-25
EP0514995B1 EP0514995B1 (de) 1997-07-23

Family

ID=11359982

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92201446A Expired - Lifetime EP0514995B1 (de) 1991-05-24 1992-05-21 Kompakte Einrichtung für die manuelle Kontrolle von arbeitenden Schaltern

Country Status (4)

Country Link
EP (1) EP0514995B1 (de)
AT (1) ATE155927T1 (de)
DE (1) DE69221026D1 (de)
IT (1) IT1252318B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106024491A (zh) * 2016-06-17 2016-10-12 中国西电电气股份有限公司 一种操动机构手动闭锁装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU497112B2 (en) * 1973-04-24 1978-11-30 Bo Wennersten Coupling device
DE3038009A1 (de) * 1979-11-29 1982-04-22 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Anordnung zur betaetigung und verriegelung eines schalters
SE446677B (en) * 1980-11-25 1986-09-29 Eldon Ab Control
SE459704B (sv) * 1987-08-21 1989-07-24 Eldon Ab Spaerranordning
DE3901260A1 (de) * 1988-01-19 1989-07-27 Allen Bradley Co Griffanordnung fuer ein elektrisches schaltgeraet

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU497112B2 (en) * 1973-04-24 1978-11-30 Bo Wennersten Coupling device
DE3038009A1 (de) * 1979-11-29 1982-04-22 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Anordnung zur betaetigung und verriegelung eines schalters
SE446677B (en) * 1980-11-25 1986-09-29 Eldon Ab Control
SE459704B (sv) * 1987-08-21 1989-07-24 Eldon Ab Spaerranordning
DE3901260A1 (de) * 1988-01-19 1989-07-27 Allen Bradley Co Griffanordnung fuer ein elektrisches schaltgeraet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106024491A (zh) * 2016-06-17 2016-10-12 中国西电电气股份有限公司 一种操动机构手动闭锁装置

Also Published As

Publication number Publication date
ATE155927T1 (de) 1997-08-15
ITMI911434A1 (it) 1992-11-24
DE69221026D1 (de) 1997-09-04
IT1252318B (it) 1995-06-08
ITMI911434A0 (it) 1991-05-24
EP0514995B1 (de) 1997-07-23

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