EP1447519A1 - Automatische Ahschlagvorrichtung für einen elektrischen Motor - Google Patents

Automatische Ahschlagvorrichtung für einen elektrischen Motor Download PDF

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Publication number
EP1447519A1
EP1447519A1 EP04370003A EP04370003A EP1447519A1 EP 1447519 A1 EP1447519 A1 EP 1447519A1 EP 04370003 A EP04370003 A EP 04370003A EP 04370003 A EP04370003 A EP 04370003A EP 1447519 A1 EP1447519 A1 EP 1447519A1
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EP
European Patent Office
Prior art keywords
casing
motor
rotation
tooth
switch
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.)
Withdrawn
Application number
EP04370003A
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English (en)
French (fr)
Inventor
Daniel Bracq
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Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1447519A1 publication Critical patent/EP1447519A1/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/80—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling
    • E06B9/82—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic
    • E06B9/88—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic for limiting unrolling
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/68—Operating devices or mechanisms, e.g. with electric drive
    • E06B2009/6809—Control
    • E06B2009/6872—Control using counters to determine shutter position
    • E06B2009/6881—Mechanical counters

Definitions

  • the present invention relates to an automatic stop device for gearmotors electric with two directions of rotation which develop torque essentially in a direction of rotation, not defined in advance, of such geared motors being designed to be housed in tubes more particularly intended for winding roller shutters or blinds.
  • the stop device of these engines is based on a displacement of the motor housing which causes the deformation of elastic elements.
  • an opening limit switch device associated with this stop device, which is housed in a drum which blocks the rotation of the shutter winding tube when the latter has completed its opening stroke.
  • This drum has the drawback, however, of forming an assembly with the body of the gearmotor which cannot be accommodated in the short winding tubes.
  • the invention solves this difficulty with a stop device fully integrated into the gearmotor and having a faster adjustment mode. In addition, it no longer uses, for its normal operation, the need to assess the torque by elastic elements which remain in flexion after stopping.
  • the device according to the invention assumes that the winding tube rests, on the side opposite the motor, on a tip capable of sliding on an axis away from the support.
  • Her main characteristic is, on the one hand, that the cessation of each of the senses of rotation of the motor is controlled by at least one mechanism whose action proceeds from either of the following operating modes, a repetition-based mode analog of the rotary stroke of the winding tube and a mode based on a displacement of the motor housing in response to a torque, on the other hand, in that stopping the rotation inducing the rise of the movable element is, to say the least, controlled by a mechanism proceeding from the mode based on the analog repetition of the stroke, which constitutes the normal control means, and the stopping of the rotation inducing the descent, exclusively controlled by a mechanism proceeding from the mode based on displacement of the motor housing
  • FIG. 1 in which there is the winding tube (1) in which is housed the tubular casing (2) of the motor (3).
  • This casing incorporates the whole of the stop device which is the subject of the invention and is held longitudinally in the winding tube (1) by the wheel, not shown, forming the slow speed output of the reducer.
  • the opposite end of the casing, the section of which can be seen, is flush with the mouth of the winding tube (1). It is obstructed by a nozzle (4) and a sleeve (5) rotated by the winding tube serves as a centering pad allowing the sliding of one tube (1) on the other (2).
  • a first switch control mechanism constituted by the analog rotary stroke repeater.
  • This comprises a screw (6), the end of which has a pinion (7) which emerges from the casing (2) and meshes with an internal toothed crown (8) formed in the extension of the sleeve (5) which projects beyond the casing ( 2).
  • the meshing of the teeth is not firm in order to authorize a skid.
  • the pinion (7) can move away from the crown (8), in a centripetal movement to it, because the body of the screw (6) has, on this side, only one spring (9 ) for support.
  • the skid will be obtained from an appropriate effort and the teeth will have a rounded head, creating a compromise between the ratchet effect and the resulting effect.
  • the pinion (7) extends beyond the sleeve (5) to offer a manual adjustment wheel allowing to resume or refine the adjustment which will be described below.
  • the threaded part of the screw is bounded by keys (10) between which the sliding nut (11) is caused to move. This nut should meet only one key in its travel, this threaded part will be long enough to meet all winding needs.
  • Part of the nut (11) is wedged between the screw (6) and the wall of the casing (2) which it marries on an arc of a circle large enough not to turn.
  • the faces of the nut have notches (12) in which the keys (10) fit in to block the rotation of the screw at the end of the stroke, which makes it possible to obtain a frank stop of its rotation, without creating any Tightening.
  • This nut (11) has pierced ears (13) through which slide rods (14) connected to a bowl (15) which covers the pusher (16) actuating the switch (17) assigned to stop the rotation uphill.
  • the connecting rods (14) have stops (18) which move the bowl (15) in one direction or the other, when the nut approaches one or the other of the keys (10), this a little before they block the rotation of the screw (6).
  • the interior of the bowl (15) has two reliefs (19), in the form of circular arcs generated by the partial revolution of two bumps around the axis of the housing (2), these reliefs (19) being placed on either side of the pusher (16) when the bowl (15) is at rest. Depending on the direction of movement of this bowl, one or the other relief acts on the pusher. Springs (20) recall the bowl (15) so that the groove which separates the two reliefs (19) always returns towards the pusher (16) and releases it when the connecting rods (14) are themselves released from any thrust or traction constraint by the sliding nut (11). Because the sliding nut can actuate the switch regardless of its direction of movement, this mechanism can therefore always stop the rise of the movable element, regardless of the direction of rotation of the winding tube. For a better understanding of what has just been described, reference will also be made to FIGS. 2 and 4. It will be noted, FIG. 4, that the reliefs (19) fade towards the edges of the bowl (15) to facilitate the switching of the switch pushbuttons.
  • the mechanism which has just been described has the advantage of being very quick to regulate, but also, that of registering itself, since it is not necessary to access the winding tube when the movable element is wound on it.
  • This tube can then be completely hidden, and even the axle supports, if their size fits into the diameter of the winding tube, can be integrated into the width of the apron of the movable element.
  • This purely analog mechanism therefore constitutes the normal means of stopping the engine on the climb, but it can be doubled by a supplementary control means of the switch, in the event of an obstacle to the opening of the movable element. This means is described below.
  • This second switch (24) is therefore controlled, from a pivoting of the casing which can intervene at any time under the effect of a low torque. It is arranged symmetrically at the first switch (17) with respect to the axis of the casing (2), the two leaning against a load-bearing axis (25) which can telescope in the casing (2) by compressing a spring (26 ) and they are linked together to this load-bearing axis (25).
  • the latter comprises a tubular part which projects out of the casing, which is intended to be fixedly attached to an external support, allowing the escape of the electrical conductors to the outside.
  • the other part of the axis (25) illustrated by the view of a section A reproduced in FIG.
  • Fig. 3 ends with a cylindrical core (27) provided with a tooth (28) which clutch with a ring (29) linked to the casing (2).
  • the ring (29) has two housings (30, 31) capable of receiving the tooth, but with a clearance.
  • Fig. 3 a plane P1, median to the profile of the tooth (28) and to its supporting core (27). It will have been arranged, moreover, so that this plane P1 is also median to the pushers (16, 34) of the switches (17, 24), all these parts being integral with the axis (25).
  • each housing (30 or 31) of the ring (29) intended to receive the tooth (28) a bearing surface (35 or 36) which creates a stop position with a distinctive side of the tooth (28) and that the ring (29) must operate a 180 ° rotation to go from one to the other while simultaneously offering a new housing for the tooth (28). It will be on one or other of these stop positions that the casing will be able to react to the torque generated by the suspension or the lifting of the mobile element and according to the direction of exercise of this couple, one or the other stop position will be chosen. On the other hand, and we also refer to FIG.
  • Fig. 4 shows that the projecting shape (32) of the wheel (33) follows the internal concavity of the casing (2) and that it has a groove (37) whose central axis is parallel to that of the casing.
  • the axis of this groove (37) belongs to a central section plane P2 of the part.
  • the groove (37) has rounded side edges which create the bosses acting on the switch pusher.
  • the wheel (33) is largely hollowed out in its center for the passage of the carrier axis (25) as well as that of the conductors and it collaborates incidentally with the other mechanism by ensuring the holding of one end of the screw of the analog repeater and guiding the rods linked to the bowl.
  • FIG. 5 represents a front view of a modified clutching ring (29).
  • the bearing surfaces (35, 36) against which the tooth is called to create a stop position and the stops (38, 39) which extend these surfaces simply have an elongated spiral shape, the sides of the visible tooth (28) fig. 6 embracing these surfaces.
  • the pitch of the propellers will be such that a sliding of a spiral on the other causes significant lateral movement with regard to rotation and their direction of gyration will be such that it will always have the effect that the housing (2) and the 'carrier axis (25) are caused to telescope spontaneously facing a high torque, regardless of the stop position which works. It will easily be seen in FIG. 1 that any telescoping of the carrier axis (25) with the housing causes the displacement of the bowl (15) above the switch (17), thus stopping the rotation on the rise.
  • a final efficiency can also be added to the device, its description not requiring the use of a drawing to be understood.
  • the compression of the spring (26) which opposes this effect will require a slight effort on the part of the motor so that the casing (2) pivots and triggers its stopping.
  • the nose (40) of the tooth (28) will then, seen from above, a very flat " ⁇ " shape to work on spirals whose directions of gyration are opposite.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Invalid Beds And Related Equipment (AREA)
EP04370003A 2003-02-17 2004-02-16 Automatische Ahschlagvorrichtung für einen elektrischen Motor Withdrawn EP1447519A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0301880 2003-02-17
FR0301880A FR2851380A1 (fr) 2003-02-17 2003-02-17 Dispositif d'arret automatique pour un moteur electrique loge dans un tube rotatif plus particulierement destine a actionner un volet roulant ou un store

Publications (1)

Publication Number Publication Date
EP1447519A1 true EP1447519A1 (de) 2004-08-18

Family

ID=32669385

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04370003A Withdrawn EP1447519A1 (de) 2003-02-17 2004-02-16 Automatische Ahschlagvorrichtung für einen elektrischen Motor

Country Status (2)

Country Link
EP (1) EP1447519A1 (de)
FR (1) FR2851380A1 (de)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0844362A1 (de) * 1996-11-21 1998-05-27 Somfy Vorrichtung zum automatischen Abschalten eines Motorantriebes einer Rolladenwickelwelle

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0844362A1 (de) * 1996-11-21 1998-05-27 Somfy Vorrichtung zum automatischen Abschalten eines Motorantriebes einer Rolladenwickelwelle

Also Published As

Publication number Publication date
FR2851380A1 (fr) 2004-08-20

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