EP0021197B1 - 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
EP0021197B1
EP0021197B1 EP19800103165 EP80103165A EP0021197B1 EP 0021197 B1 EP0021197 B1 EP 0021197B1 EP 19800103165 EP19800103165 EP 19800103165 EP 80103165 A EP80103165 A EP 80103165A EP 0021197 B1 EP0021197 B1 EP 0021197B1
Authority
EP
European Patent Office
Prior art keywords
drive shaft
counter
switching
shaft
wheel
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
Application number
EP19800103165
Other languages
German (de)
English (en)
Other versions
EP0021197A1 (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 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 counter roller derailleurs are freely rotatable on the outer sections of a drive shaft driven by the servomotor and that on the central portion of the drive shaft a firmly connected to it Drive gear and on both sides of this an intermediate wheel connected to the first ratchet of each counter roller derailleur is freely rotatably arranged and that parallel to the drive shaft an adjusting shaft carrying the indexing pinions of the counter roller derailleur on its outer sections is axially displaceable and lockable, on the middle section three Gears are firmly attached to each other at such a distance that in a central position the middle gear meshes with the drive wheel and the outer gears are engaged with the idler gears on the drive shaft and that in a different position ng on this side or beyond the middle position one of the outer gears with the respective idler gear of a counter roller derailleur engages.
  • the adjusting shaft is freely rotatable with its upper end in a sleeve which is axially adjustable by means of an external thread and lockable 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 rotating the sleeve and the Usability is so easy.
  • 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 indexing pinions 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 ratchet wheels 6 and 6 'of the multi-stage counter roller derailleurs 5 and 5' intermediate gears 9 and 9 'are coaxially connected and also 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 lower 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 shims 17 and sleeve 14 in of the respective position.
  • the positive connection of the setting shaft 4 with the drive shaft 3 via the drive gear 8 and the gear 10 must be released.
  • the latching to the adjusting disk 17 is released by lifting the leaf spring 19, this can be from the zero or operating position, see FIG. 2, are rotated until the leaf spring 19 engages in the next of the incisions 18, for example in the position L (counterclockwise rotation of the actuator), see FIG. 4.
  • the sleeve 14 screws down and takes the adjusting shaft 4 with, as shown in Fig. 3.
  • 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 counter roller derailleur 5 ′ corresponding to the distance traveled by the actuator, the switching cams 12 ′ of the last switching pinion 7 'the key switch 13' operated.
  • the adjusting shaft 4 is raised by turning the dial 17 into the position R (clockwise rotation of the actuator) so that its gear 11 meshes with the intermediate gear 9, while the gear 10 and the drive gear 8 or the gear 11 'and the intermediate wheel 9 'are disengaged.
  • the setting shaft 4 is brought back to the zero or operating position, the counter roller switch mechanisms 5 and 5 'count the distance traveled by the actuator depending on the direction of rotation and switch when the respective end positions are reached using the pushbuttons 13 or 13 'from.
  • 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)

Claims (2)

1. Dispositif pour arrêter des servo-moteurs électriques en fonction de la course de réglage, qui comporte respectivement un mécanisme de commutation (5, 5') des rouleaux du compteur à plusieurs étages pour chaque sens de rotation, et un commutateur électrique (13, 13'), pouvant être actionné par le dernier étage de ce mécanisme, ainsi que des moyens pour régler les points de commutation correspondant aux positions extrêmes de la course de réglage, caractérisé par le fait que les roues de commutation (6, 6') des deux mécanismes de commutation (5, 5') des rouleaux du compteur sont montées de façon à pouvoir tourner librement sur des sections extérieures d'un arbre d'entraînement (3) entraîné par le servo-moteur, et que sur la section centrale de l'arbre d'entraînement (3) sont montées, de façon à pouvoir tourner librement, une roue dentée d'entraînement (8) qui lui est couplée et, respectivement de chaque côté de celle-ci, une roue intermédiaire (9, 9') couplée à la première roue de commutation de chaque mécanisme de commutation (5, 5') des rouleaux du compteur, et qu'un arbre de réglage, qui porte les pignons d'avancement (7, 7') des mécanismes de commutation (5,4) des rouleaux du compteur sur ces sections extérieures, est monté parallèlement à l' arbre d'entraînement (3) de manière à pouvoir être déplacé et bloqué axialement, trois roues dentée (10, 11, 11') étant montées fixes l'une par rapport à l'autre sur la section centrale de cet arbre, à une distance telle que dans une position centrale la roue dentée centrale (10) engrène avec la roue d'entraînement (8), et les roues dentées extérieures (11, 11') engrènent avec les roues intermédiaires (9, 9') sur l'arbre d'entraînement (3), et que, dans une autre position respective, d'un côté ou de l'autre de la position centrale, chaque roue dentée extérieure (11, 11') engrène avec la roue intermédiaire respective (9, 9') d'un mécanisme de commutation (5,5') des rouleaux du compteur.
2. Dispositif suivant la revendication 1, caractérisé par le fait que l'extrémité supérieure de l'arbre de réglage (4) est montée de façon à pouvoir tourner librement dans un manchon (14) qui peut être déplacé axialement au moyen d'un filetage extérieur (15) et être bloqué dans trois positions, au moyen d'un encliquetage (18, 19).
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 EP0021197A1 (fr) 1981-01-07
EP0021197B1 true 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)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3974962A (en) * 1974-10-25 1976-08-17 Quaker City Gear Works, Inc. Position limiting switch assembly

Also Published As

Publication number Publication date
DE2924479A1 (de) 1981-01-22
EP0021197A1 (fr) 1981-01-07
DE7917405U1 (de) 1984-12-13

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