EP0122629A1 - Dispositif de commande électrique pour stores, rideaux ou similaires - Google Patents

Dispositif de commande électrique pour stores, rideaux ou similaires Download PDF

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Publication number
EP0122629A1
EP0122629A1 EP84104260A EP84104260A EP0122629A1 EP 0122629 A1 EP0122629 A1 EP 0122629A1 EP 84104260 A EP84104260 A EP 84104260A EP 84104260 A EP84104260 A EP 84104260A EP 0122629 A1 EP0122629 A1 EP 0122629A1
Authority
EP
European Patent Office
Prior art keywords
limit switch
control shaft
motor
cord
stop
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
EP84104260A
Other languages
German (de)
English (en)
Other versions
EP0122629B1 (fr
Inventor
Hans Dipl.-Ing. Gross
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
Priority to AT84104260T priority Critical patent/ATE26530T1/de
Publication of EP0122629A1 publication Critical patent/EP0122629A1/fr
Application granted granted Critical
Publication of EP0122629B1 publication Critical patent/EP0122629B1/fr
Expired legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47H—FURNISHINGS FOR WINDOWS OR DOORS
    • A47H5/00—Devices for drawing draperies, curtains, or the like
    • A47H5/02—Devices for opening and closing curtains
    • A47H5/032—Devices with guiding means and draw cords
    • A47H5/0325—Devices with guiding means and draw cords using electrical or electronical drive, detecting or controlling means

Definitions

  • the invention relates to an electric drive device for curtains, curtains or the like, with a drive motor which is in drive connection with a rope pulley which is designed for engagement with a cord for opening and closing the curtain, and with a device for automatically switching off the electric motor in at least one end position of the curtain.
  • the electric motor is switched off in both end positions of the curtain, if it is not switched off manually, in that a part of the curtain connected to the cord, in particular a roller, at the end of a guide in which the roller slides, comes to the plant, and that the then effective increased torque of the electric motor is used for switching off by means of a torque sensor.
  • the torque required to switch off is considerably greater than the torque required to pull the curtain.
  • the known device has the disadvantage that the increased torque causes the cord to be stretched, that is to say a permanent length extension, as a result of which the shutdown accuracy can be impaired and re-tensioning is necessary from time to time.
  • the invention has for its object to provide a device of the type mentioned, in which no significantly increased torque of the engine is required for switching off.
  • This object is achieved according to the invention in that the switch-off device has at least one limit switch built into the drive device, which detects when a stop means arranged on the cord comes to rest against an associated stop when the motor is running.
  • the stop element can in particular act directly on the limit switch, which can thus form the stop itself, or, as is provided in the embodiments described later, a movably mounted stop is provided which transmits its movement to the switching element of the limit switch. Another embodiment that is possible in principle will be explained later.
  • the drive device has, in the interior of a housing, a pivotably mounted control shaft which has a radially projecting projection which interacts with the switching element of the limit switch.
  • a further radially projecting projection can be provided on the control shaft, which forms the abovementioned stop.
  • control shaft runs within a bore in the motor shaft
  • limit switch is arranged in the region of that end of the control shaft that lies on the side of the motor facing away from the stop.
  • a spring is provided for returning the control shaft to a position in which the limit switch is not actuated. This can be useful for electrical reasons. To switch off the motor, a single brief actuation of the limit switch is sufficient.
  • control shaft is essentially coaxial or parallel to the pulley and has a radially protruding arm closely adjacent to the pulley, such that when the motor is running a stop element attached to the cord comes into contact with the arm and rotates the control shaft.
  • the radially projecting arm can be located on that side of the rope pulley which faces the motor, or else on the other side of the rope pulley. In the latter case, the control shaft extends through a central recess in the pulley.
  • At least one actuating part is slidably guided in the housing, which has an abutment surface protruding from the housing, which is provided for cooperation with an abutment element fastened to the cord, and which has its end region which is located inside the housing and faces away from the abutment surface actuation of the limit switch. It is thereby achieved in a particularly simple manner that the limit switch arranged in the interior of the housing is actuated safely without it being necessary for the stop element arranged on the cord to be able to run into the interior of the housing.
  • the actuating part can be designed such that the cord can be passed through it.
  • the inner end of the operating part acts on the arm mentioned above.
  • the inner end region of the actuating part acts directly on a switching element of the limit switch.
  • the limit switch can be arranged in close proximity to the rope pulley.
  • the advantage of this embodiment lies in the space-saving construction. If, as in the exemplary embodiment, the limit switches are located in a housing part which is separate from the actual motor housing, the motor can be easily removed from the latter housing part, the The number of connections to be disconnected and re-established after replacing the motor is limited to the power supply to the motor. This makes maintenance and repair of the device easier.
  • control shaft is designed for anchoring to a part of a curtain rail, such that the stator of the motor can be pivoted to a limited extent with respect to the control shaft.
  • the motor which is still running then causes the stator of the motor to pivot somewhat, as a result of which the limit switch, which is immovable relative to the stator, rotates relative to that in the adjacent end of the likewise immovable control shaft, so that the limit switch is actuated.
  • This embodiment is particularly advantageous when curtain rails are used with an extremely low height, so that it would be difficult to make the arrangement so that a stop element arranged on the cord can enter the drive device in order to pivot the control shaft.
  • the device has an electric motor 2 which is surrounded on all sides by a motor housing, and to the left (in the view of FIG. 1) there is a first roller housing 4 and a second roller housing 6, which essentially form a housing for a cable pulley 8 which Parts of the device arranged to the right of the motor 2 are covered by a cap 10 which has a feedthrough 12 through which an electrical cable 14 enters the inside of the cap 10, which contains the electrical leads to the electric motor 2 and to limit switches to be explained later.
  • the inner rotor 16 of the electric motor 2 drives a hollow shaft 18, which is connected in a rotationally fixed manner to the cable wheel 8, the rotationally fixed connection being effected by a tongue and groove connection. If the device for driving a curtain or a curtain shown in FIG. 1 is mounted, the longitudinal direction of the motor shaft 18 runs perpendicularly, and the cable pulley 8 is approximately at the level of the curtain strip guiding the curtain.
  • the second roller housing 6 has a projection 20 which is intended for engagement in a conventional curtain rail and which serves to mount the device in a defined position relative to the curtain rail.
  • the firm anchoring to the curtain rail is facilitated by a recess 22 in the area of the projections 20.
  • Further recesses 24, which are provided on outwardly projecting projections of the roller housings 4 and 6, are intended to facilitate cladding of the drive device by material webs.
  • the cable wheel 8 is supported on its side facing the motor 2 by a Seeger ring 26 which engages in a groove in the motor shaft 18, and on the other side the cable wheel 8 is held by two disks 30 and 32, of which the latter disk 32 abuts a lever 36 formed from flat material.
  • the lever 36 is rotatably attached to a control shaft 38 which is passed through a bore in the motor shaft 18 and is secured by a spring ring 40.
  • a control shaft 38 which is passed through a bore in the motor shaft 18 and is secured by a spring ring 40.
  • an actuating element 44 is connected in a rotationally fixed manner and secured against slipping off by a spring ring 46.
  • FIG. 4 shows two limit switches 50 and 52, which are fastened to the end shield 54 of the electric motor 2 on the right in FIG. 1, using suitable spacing elements at the distance shown in FIG. 1 for the limit switch 52.
  • the actuating element 44 has a short arm 56 pointing upwards in FIG. 1, to which an extension 58 running parallel to the control shaft 38 is connected.
  • the end region of the extension 58 lies exactly between the two switching elements 60 of the limit switches 50 and 52. If the control shaft 38 is rotated slightly, the extension 58 actuates the limit switch 50 or the limit switch 52 depending on the direction of rotation.
  • the actuating element 44 has the arm 56 diametrically opposite one another arm 62 of greater length, which also extends radially to the control shaft 38.
  • the arm 62 carries at its free end a transverse bar 64 which extends substantially transversely to the longitudinal direction of the control shaft 38, and the two ends of the transverse bar 64 are in the vicinity of the free ends of a U-shaped leaf spring 66 which is anchored to the end shield 54 is.
  • the leaf spring 66 ensures that the extension 58 is normally not in engagement with the actuators 60 of the limit switches 50 and 52.
  • actuating parts 67 which cooperate with the lever 36, are mounted so that they can be displaced from the bottom to the top in the illustration in FIGS. 1 to 5.
  • the actuating parts 67 have a tubular section 68 protruding from the housing 4, 6, the inside diameter of which is so large that the cord 48, which is passed through the tubular section 68, passes through almost without friction, but that one on the cord 48 attached stop element 69, in particular a precursor which is held on the cord by means of a screw, does not fit through.
  • a strip-like projection 70 is arranged, which in the illustration in FIG.
  • the actuating part 67 is in a position delimited by the housing 4, 6, the most outward, that is to say shifted downward in FIG. 3, the distance between the end 71 and the lever 36 is so large that if the other actuating part 67 is moved by the stop element 69, the pivoting angle of the lever 36 is sufficiently large to actuate the limit switch 50 or 52.
  • a stop element, not shown in FIG. 3, arranged on the left strand of the cord 48 comes to rest on the actuating part 67 on the left in FIG. 3 when the rope pulley 8 runs and then causes the limit switch 52 to respond.
  • the housing part 4 can be removed after loosening screws, and if necessary, after loosening the spring ring 40, the rope wheel 8 can also be pulled out in order to be able to insert the cord more easily.
  • a capacitor that is required for operating the electric motor 2 can also be seen in FIG. 1 within the right-hand part of the cap 10.
  • the connections 53 of the limit switches 50, 52 are connected to the cable 14.
  • the individual components of the device shown in Fig. 1 are clamped together by means of long screws.
  • the part 101 of a further drive device for curtains shown in FIG. 6 has a motor housing 103 in which the electric drive motor of the device is arranged.
  • the motor drives a planetary gear 105, of which only a few parts are broken off, drives a shaft 107, which has longitudinal teeth in its left end region 110 in FIG. 6, so that it can be rotatably engaged with the pulley described later .
  • An electrical multiple coupling 114 is fastened in a housing part 112 which is extended downward relative to the motor housing 103 and to which a multiple plug 116, which is connected to an electrical cable for supplying power to the motor, can be connected.
  • the electrical lines 118 leading to the motor lead partly to an electrical clamping device 120, partly to the multiple coupling 114.
  • the device part 130 which is arranged on the left-hand side of the housing part 112 in the ready-to-operate state and is arranged immediately after this is shown separately in FIGS.
  • the device part 130 contains a rope pulley 134 which is easily rotatably supported by a ball bearing 132 and over which the pulling rope (not shown) of the curtain is guided.
  • the cable pulley 134 has a central recess with a longitudinal toothing 136 which can be pushed onto the end section 110 of the shaft 107 and is rotatably connected in this way to the shaft 107.
  • Two microswitches 138 and 139 are arranged in the device part 130, each of which has a switching arm 140.
  • Each switching arm 140 can cooperate with the upper end region of a switching pin 142, which is arranged in a housing part 144 of the device part 130 in the illustration in FIG. 8 so as to be vertically displaceable.
  • the switching pin 142 has a groove, into which a spring ring 146 engages, which serves as an abutment for a helical compression spring 148, which is supported with its upper end region on part of the housing part 144.
  • the spring 148 thus endeavors to always move the switching pin 142 into the end position shown in FIG. 8, in which the microswitches 138, 139 are not actuated.
  • the end regions 150 of the switching pins 142 facing away from the microswitches 138, 139 protrude from the housing 144.
  • the outer end surface of the switching pins forms a stop surface 151.
  • the electrical clamping device 120 which is part of the device part 101, is drawn in the position it occupies relative to the device part 130 when it is attached to the device part 101. Connections of the clamping device 120 are connected to the electrical connections of the microswitches 138, 139.
  • the device shown in FIGS. 6 to 8 with the motor axis running horizontally is generally arranged in the installed state in such a way that the motor axis runs perpendicularly, so that the switching pins 142 run horizontally.
  • the unit shown in FIG. 6 can be pulled off the housing part 144, the end section 110 of the shaft 107 being easily detached from the cable pulley 134.
  • a few electrical connections in the area of the clamping device 120 are then still to be loosened, and then the device part shown in FIG. 6 can be removed, for example in order to carry out an engine repair.
  • the curtain traction cable remains in engagement with pulley 134, which does not have to be removed from the place of the building where it is located to replace the motor.

Landscapes

  • Curtains And Furnishings For Windows Or Doors (AREA)
EP84104260A 1983-04-15 1984-04-14 Dispositif de commande électrique pour stores, rideaux ou similaires Expired EP0122629B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84104260T ATE26530T1 (de) 1983-04-15 1984-04-14 Elektrische antriebsvorrichtung fuer vorhaenge, gardinen oder dergleichen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3313706 1983-04-15
DE19833313706 DE3313706A1 (de) 1983-04-15 1983-04-15 Elektrische antriebsvorrichtung fuer vorhaenge, gardinen oder dgl.

Publications (2)

Publication Number Publication Date
EP0122629A1 true EP0122629A1 (fr) 1984-10-24
EP0122629B1 EP0122629B1 (fr) 1987-04-15

Family

ID=6196497

Family Applications (2)

Application Number Title Priority Date Filing Date
EP84104260A Expired EP0122629B1 (fr) 1983-04-15 1984-04-14 Dispositif de commande électrique pour stores, rideaux ou similaires
EP84901756A Pending EP0140945A1 (fr) 1983-04-15 1984-04-14 Dispositif d'entrainement electrique pour rideaux, stores ou autres

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP84901756A Pending EP0140945A1 (fr) 1983-04-15 1984-04-14 Dispositif d'entrainement electrique pour rideaux, stores ou autres

Country Status (4)

Country Link
EP (2) EP0122629B1 (fr)
AT (1) ATE26530T1 (fr)
DE (2) DE3313706A1 (fr)
WO (1) WO1984004031A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2798194A (en) * 1954-05-06 1957-07-02 Harland J Cantin Electric motor for drape operating mechanism
CH406892A (fr) * 1963-01-30 1966-01-31 Acec Appareil comprenant un moteur électrique actionnant un tambour d'entraînement d'un élément, notamment d'un volet ou d'un store
US3269454A (en) * 1963-11-14 1966-08-30 Gill Drapery actuator
GB1045250A (en) * 1964-09-28 1966-10-12 Malcolm Hubert John Over Arrangements for drawing curtains
DE2051059A1 (de) * 1970-10-17 1972-04-20 Mechanische Fensterbehänge GmbH, 2850 Bremerhaven Antriebsvorrichtung für Schnurzüge von Vorhängen
AT326859B (de) * 1973-12-03 1976-01-12 Wuster Heinrich Elektrisch antreibbare verschiebevorrichtung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2798194A (en) * 1954-05-06 1957-07-02 Harland J Cantin Electric motor for drape operating mechanism
CH406892A (fr) * 1963-01-30 1966-01-31 Acec Appareil comprenant un moteur électrique actionnant un tambour d'entraînement d'un élément, notamment d'un volet ou d'un store
US3269454A (en) * 1963-11-14 1966-08-30 Gill Drapery actuator
GB1045250A (en) * 1964-09-28 1966-10-12 Malcolm Hubert John Over Arrangements for drawing curtains
DE2051059A1 (de) * 1970-10-17 1972-04-20 Mechanische Fensterbehänge GmbH, 2850 Bremerhaven Antriebsvorrichtung für Schnurzüge von Vorhängen
AT326859B (de) * 1973-12-03 1976-01-12 Wuster Heinrich Elektrisch antreibbare verschiebevorrichtung

Also Published As

Publication number Publication date
WO1984004031A1 (fr) 1984-10-25
EP0140945A1 (fr) 1985-05-15
EP0122629B1 (fr) 1987-04-15
DE3313706A1 (de) 1984-10-18
DE3463117D1 (en) 1987-05-21
ATE26530T1 (de) 1987-05-15

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