EP0021197A1 - Dispositif pour interrompre une commande de position par moteur électrique en fonction de la course - Google Patents

Dispositif pour interrompre une commande de position par moteur électrique en fonction de la course Download PDF

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Publication number
EP0021197A1
EP0021197A1 EP19800103165 EP80103165A EP0021197A1 EP 0021197 A1 EP0021197 A1 EP 0021197A1 EP 19800103165 EP19800103165 EP 19800103165 EP 80103165 A EP80103165 A EP 80103165A EP 0021197 A1 EP0021197 A1 EP 0021197A1
Authority
EP
European Patent Office
Prior art keywords
shaft
drive shaft
drive
wheel
switching
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
EP19800103165
Other languages
German (de)
English (en)
Other versions
EP0021197B1 (fr
Inventor
Hermann Ing.-grad. Schwörer
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
Publication of EP0021197A1 publication Critical patent/EP0021197A1/fr
Application granted granted Critical
Publication of EP0021197B1 publication Critical patent/EP0021197B1/fr
Expired legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
    • G06M3/00—Counters with additional facilities
    • G06M3/02—Counters with additional facilities for performing an operation at a predetermined value of the count, e.g. arresting a machine
    • G06M3/04—Counters with additional facilities for performing an operation at a predetermined value of the count, e.g. arresting a machine with an additional counter train operating in the reverse direction
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/02—Details
    • H01H19/10—Movable parts; Contacts mounted thereon
    • H01H19/14—Operating parts, e.g. turn knob
    • H01H19/18—Operating parts, e.g. turn knob adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift

Definitions

  • the invention relates to a device for the travel-dependent shutdown of electromotive actuators, each with a multi-stage counter roller switch mechanism for each direction of rotation and with an electrical switch actuated by its last stage, and with means for setting the switching points corresponding to the end positions of the travel.
  • the ratchet wheels and shift pinion-bearing shafts of two roller counter switching mechanisms which operate switches with the aid of cam disks, are arranged parallel to a drive shaft connected to the actuator.
  • the counter roller deraillemers assigned to the two directions of rotation are driven by the drive shaft.
  • the actuator is moved to the respective end position and stopped there, the drive shaft of the roller derailleurs is disengaged and these are turned by hand until the cam disc actuates the switch assigned to each derailleur.
  • the known travel-dependent switching devices are relatively complex.
  • a solution to the problem is seen in a device of the type mentioned, which is characterized in that the switching wheels of both derailleurs are freely rotatably arranged on the outer sections of a shaft driven by the servomotor and that on the central section of the shaft a drive gear firmly connected to it and on both sides of this an intermediate wheel connected to the first ratchet of each rear derailleur is arranged so that it can rotate freely and that, parallel to the drive shaft, an adjusting shaft carrying the indexing pinions of the roller derailleurs is axially displaceable and lockable parallel to the drive shaft, on the central section of which three gears at such a distance from one another are firmly attached that the middle gear meshes with the drive wheel in a middle position and the outer gears are in engagement with the idler gears on the drive shaft and that each in a different position on either side or beyond the middle position one of the outer gears with the respective idler gear of a roller shift mechanism is engaged.
  • the setting shaft is rotatably supported with its upper end in a sleeve which is axially adjustable by means of a thread and can be locked in three positions by means of a detent, so that the operating position and the two other positions for setting the end switching points are fixed by turning the sleeve and the operability is thus facilitated.
  • Another advantage of the device designed according to the invention can be seen in the fact that only two instead of five shafts with their bearings are required and that a better use of space is achieved due to the smaller footprint of the path-dependent switching device.
  • FIG. 1 Two shafts 1 and 2, two shafts arranged parallel to each other, namely a drive shaft 3 and an adjusting shaft 4, are mounted.
  • the drive shaft 3 is driven in a manner not shown here by the electromotive actuator of an actuator in one or the other direction of rotation.
  • the elements of two multi-stage counter-roller derailleurs 5 and 5 ' are freely rotatable, namely on the drive shaft 3, the switching gears 6 and 6', on the setting shaft 4 the switching pinion 7 coupled to them in the manner of a Maltese cross gear and 7 '.
  • the middle section of the drive shaft 3 carries a drive gear 8 fixedly connected to it, while with the adjacent shift gears 6 and 6 'of the multi-stage roller shift mechanisms 5 and 5', intermediate gears 9 and 9 'are also connected coaxially and freely rotatable on the drive shaft 3.
  • the adjusting shaft 4 which can be displaced and locked in the axial direction, is here in a central position corresponding to the operating position.
  • the indexing pinions 7 and 7 'from their last stage are provided with switching cams 12, 12' which actuate electrical pushbuttons 13 and 13 'which, as limit switches, switch off the actuator when the travel end points are reached.
  • the upper end of the latter is rotatable in a sleeve 14, but is axially immovable.
  • the sleeve 14 is provided with an external thread 15 with a large pitch, which interacts with a corresponding internal thread in a socket 16 in the circuit board 1.
  • the sleeve 14 is still connected to a knurled shim 17, which, as can be seen in FIG. 2, has three incisions 18 on its circumference, into which a leaf spring 19 fastened on the circuit board 1 snaps and thus adjusts disc 17 and sleeve 14 sets in the respective position.
  • the positive connection of the setting shaft 4 to the drive shaft 3 is to be released via the gears 8 and 10.
  • the catch to the adjusting disk 17 is released by lifting the leaf spring 19; this can be rotated from the zero or operating position, see FIG. 2, until the leaf spring 19 engages in the next of the incisions 18, for example in the incision L (counterclockwise rotation of the Actuator), see FIG. 4.
  • This rotation of the adjusting disk 17 screws the sleeve 14 downward and takes the adjusting shaft 4 with it, as shown in FIG.
  • the axial stroke is calculated so that in the position L of the shim 17, the central gear 10 and the outer gear 11 on the setting shaft 4 disengage from the drive gear 8 and the idler gear 9 on the drive shaft 3, the other external gear 11 ' however, remains in engagement with the idler gear 9 '.
  • the setting shaft 4 can now be rotated by hand until after the number of revolutions of the roller switching mechanism 5 'corresponding to the travel of the actuator, the switching cams 12' of the last switching pinion 7 ' Switch 13 'operated.
  • the adjusting shaft 4 is raised by turning the adjusting disk 17 into the locking position R (clockwise rotation of the actuator) so that its gear 11 meshes with the intermediate gear 9, while the gear wheels 10 and 8 or 11 'and 9' are disengaged are.
  • Adjustment shaft 4 brought back into the zero or operating position, the roller switch mechanisms 5 and 5 'count the number of rotations, depending on the direction of rotation, of the travel of the actuator and switch off when the respective end positions are reached using the pushbutton switches 13 or 13'.
  • the switching devices shown can be constructed in a space-saving manner on a small footprint.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Transmission Devices (AREA)
  • Switches With Compound Operations (AREA)
EP19800103165 1979-06-18 1980-06-06 Dispositif pour interrompre une commande de position par moteur électrique en fonction de la course Expired EP0021197B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2924479 1979-06-18
DE19792924479 DE2924479A1 (de) 1979-06-18 1979-06-18 Einrichtung zur stellwegabhaengigen abschaltung von elektromotorischen stellantrieben

Publications (2)

Publication Number Publication Date
EP0021197A1 true EP0021197A1 (fr) 1981-01-07
EP0021197B1 EP0021197B1 (fr) 1983-04-13

Family

ID=6073461

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19800103165 Expired EP0021197B1 (fr) 1979-06-18 1980-06-06 Dispositif pour interrompre une commande de position par moteur électrique en fonction de la course

Country Status (2)

Country Link
EP (1) EP0021197B1 (fr)
DE (2) DE2924479A1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2288999A1 (fr) * 1974-10-25 1976-05-21 Quaker City Gear Works Limiteur de course

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2288999A1 (fr) * 1974-10-25 1976-05-21 Quaker City Gear Works Limiteur de course

Also Published As

Publication number Publication date
EP0021197B1 (fr) 1983-04-13
DE2924479A1 (de) 1981-01-22
DE7917405U1 (de) 1984-12-13

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