EP0795066A1 - Extension limiter for awnings - Google Patents

Extension limiter for awnings

Info

Publication number
EP0795066A1
EP0795066A1 EP96907347A EP96907347A EP0795066A1 EP 0795066 A1 EP0795066 A1 EP 0795066A1 EP 96907347 A EP96907347 A EP 96907347A EP 96907347 A EP96907347 A EP 96907347A EP 0795066 A1 EP0795066 A1 EP 0795066A1
Authority
EP
European Patent Office
Prior art keywords
failure
limitation according
winding tube
failure limitation
spindle
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.)
Ceased
Application number
EP96907347A
Other languages
German (de)
French (fr)
Inventor
Josef Grüdl
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.)
Gerhard Geiger GmbH and Co
Original Assignee
Gerhard Geiger GmbH and Co
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 Gerhard Geiger GmbH and Co filed Critical Gerhard Geiger GmbH and Co
Priority to DE29624357U priority Critical patent/DE29624357U1/en
Publication of EP0795066A1 publication Critical patent/EP0795066A1/en
Ceased legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F10/00—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins
    • E04F10/02—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins
    • E04F10/06—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building
    • E04F10/0644—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building with mechanisms for unrolling or balancing the blind
    • E04F10/0648—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building with mechanisms for unrolling or balancing the blind acting on the roller tube
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F10/00—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins
    • E04F10/02—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins
    • E04F10/06—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F10/00—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins
    • E04F10/02—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins
    • E04F10/06—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building
    • E04F10/0611—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building with articulated arms supporting the movable end of the blind for deployment of the blind
    • E04F10/0618—Sunshades, e.g. Florentine blinds or jalousies; Outside screens; Awnings or baldachins of flexible canopy materials, e.g. canvas ; Baldachins comprising a roller-blind with means for holding the end away from a building with articulated arms supporting the movable end of the blind for deployment of the blind whereby the pivot axis of the articulation is perpendicular to the roller
    • 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
    • E06B9/76—Operating devices or mechanisms, e.g. with electric drive using crank handles
    • 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

Definitions

  • the invention relates to a limitation of failure for awnings according to the preamble of claim 1.
  • Such an awning is known for example from DE-C1-4014962.
  • the awning is provided with a braking device which is formed by at least one brake spring in the form of a helical spring which is arranged between the driven gear of the transmission and a piece which is fixedly connected to the transmission housing and which is held in a groove with an angled end, which is located in a hub firmly connected to this gearwheel, this gearwheel carrying the winding tube.
  • This braking device prevents the awning fabric from unintentionally and unintentionally unwinding and at the same time vibrates the winding tube during certain working positions of the extension arms.
  • a disadvantage of this known awning is that when the gear is turned further in the unwinding direction, in the case in which the desired unwinding position of the awning fabric has already been reached, further awning fabric material is unwound, so that the awning fabric is no longer taut, the wind that Can inflate and tear awning cloth like a balloon.
  • the object of the invention is therefore to provide an awning of the type mentioned above, in which the further unwinding of awning fabric material is prevented after the awning fabric has reached the unwinding desired position.
  • the invention is implemented in any case if there is a failure limitation that can be set with high accuracy, so that it intervenes practically at the same time as the desired position of the awning fabric is reached.
  • the adjustment of the failure limit can be done in such a way that the awning material is first unwound, until the desired unwinder position is reached, in which the awning fabric is still under tension and the failure arms have reached their maximum extension position. Then the failure limit is set such that a further twisting of the winding tube is no longer possible, so that even when the crank rod is actuated further, the tension of the cloth is reduced.
  • the failure limitation is preferably arranged at the opposite end of the winding tube with respect to the transmission and can be rotated and adjusted about the axis of the winding tube. As the rotation of the failure limitation is carried out continuously, the desired operating position of the failure limitation can be set with absolute accuracy. Come in addition, that the spatial separation of the failure limitation from the gearbox relieves the gearbox.
  • the locking device comprises a spindle, which is detachably fastened with a pin part in the bearing plate of the counter-bearing and has a threaded part protruding into the winding tube, and a running nut, which on the Threaded part runs and which is supported with its peripheral surface in a radially non-rotatable and axially displaceable in a bearing pot carrying the winding tube.
  • the setting of the unwinding setpoint can expediently take place in that the pin part of the spindle has on its end face a means for rotation in the hole in the bearing plate and in that a plate leading to the hole is provided in this bearing plate, which narrows by means of a screw for clamping the pin part can be.
  • a further embodiment of the invention provides that the spindle is provided with a collar having at least one stop and the barrel nut is provided with at least one stop which can be struck against the spindle stops.
  • the locking device works together with a freewheel device, which acts between the gearbox and the winding tube in such a way that it reaches the freewheeling state after the unwinding setpoint position has been reached.
  • a freewheel device acts between the gearbox and the winding tube in such a way that it reaches the freewheeling state after the unwinding setpoint position has been reached.
  • FIG. 2 shows a side view of a bearing having the gear (right) for the winding tube and the counter bearing (left) for the winding tube with the unwinding locking device, the bearings being partially shown in section,
  • FIG. 3 shows a rear view of a running nut which is connected non-rotatably to the winding tube
  • Fig. 4 is a side view of the barrel nut in Fig. 3 and a partial section of this barrel nut along the line A-A in Fig. 3 and
  • FIG. 5 is a plan view of the face of the barrel nut in FIG .. 3
  • the awning shown in FIG. 1 has a support device to be fastened to a house wall or the like, which is provided with a winding tube 34 rotatably mounted in bearing plates 30, 30 '(FIGS. 1 and 2).
  • the winding tube 34 can be moved by means of a gear 32, specifically via a crank rod 26 which can be hooked in or hooked out and which can be hooked into an actuating eyelet 28.
  • Two extension arms are fastened to a support tube 24 arranged between the bearing plates 30, only one of which, the extension arm 16, is shown.
  • the extension arm 16 consists of two legs 18, 20 which are connected to one another in an articulated manner by means of a joint 22, of which the leg 18 is connected to the support shaft connected part 36 is rotatably fastened by means of a joint 38 and the leg 20 to a downspout 10 exciting the awning fabric 14 by means of a joint 22 '.
  • the downpipe 10 can also wear a valance 12.
  • the joints 22, 22 ', 38 ensure that the extension arm 16 collapses in one plane.
  • the legs 18, 20 are designed as tubes. In the interior of the tubular leg 20, a tension spring is arranged in a manner not shown, which is attached on the one hand to the joint 22 'and on the other hand to the joint 38 via a rope (not shown) running through the tubular leg 18.
  • This tension spring is always so tensioned that it acts in the sense of unfolding the legs 18, 20.
  • the actuating eyelet 28 is rotated by means of the crank rod 26, the downpipe 10 moves in the direction of the double arrow 13.
  • the part 36 can be designed as an inclination adjustment device, when the downpipe 10 is actuated in the direction of the double arrow 15.
  • the counter bearing, not visible in FIG. 1, for the winding tube 34 is shown on the right side of FIG. 2. It consists of a stiffened bearing pot 70 which is rotatably mounted with a central opening 71 on a pin part 76 of a spindle 72. On the circumference of the pot 70, axially parallel ribs 73 are evenly distributed, which engage in matching axially parallel grooves, not shown, on the inner circumference of the winding tube 34, so that the pot 70 is non-rotatably connected to the winding tube 34.
  • the pin part 76 is non-rotatably fastened in a hole 72 in the bearing plate 30 '.
  • the bearing plate 30 has a slot, not shown, which runs vertically above the pin part 76 and which can be narrowed by means of a screw 75, so that the pin part 76 can be clamped.
  • the end of the pin part 76 has a recess 79, into which a key (not shown) for turning the pin part 76 and thus the spindle 72 can be inserted.
  • the spindle 72 has a two-stop collar, only one stop 78 is shown, and a threaded part 77, on which an internally threaded barrel nut 80 runs.
  • the running nut 80 has two on the side facing the stop 78 Stops 81, 82 and is mounted on its outer circumference in the pot 70 in a radially non-rotatable but axially movable manner.
  • FIGS. 3 to 5 The structure of the running nut 80 is shown in more detail in FIGS. 3 to 5.
  • this running nut has an outer jacket which is approximately octagonal in cross section with jacket sides 84 bent inwards between the corners, the centers of which are braced with a threaded ring 85 which carries the internal thread, so that eight chambers are formed, while the nut 80 remains stable.
  • Said end face carries the two stops 81, 82.
  • this stop has a surface in the form of a circular ring section which is delimited by an outer edge 86, an inner edge 87 and two radial side edges 88, 89 .
  • the outer edge 86 forms a circular section with a larger radius, while the inner edge 87 represents a circular section with a smaller radius. From the side edge 88, the surface rises evenly to the side edge 89. The same applies to the stop 82.
  • This running nut 80 is preferably made of plastic or metal.
  • the pot 70 has an inner shape adapted to the jacket sides 84 and is accordingly provided with two to eight round inner longitudinal ribs on which the running nut 80 can slide axially.
  • the stops 78 of the spindle 72 are designed to be dual to the stops 81, 82, so that the edges 89 can strike corresponding edges of the stops 78.
  • the drive for the winding tube 34 is shown on the right side of FIG. 2. This drive can be used with advantage in the invention. However, other drives can also be used.
  • the transmission consists of a housing 40 with two gear wheels 43, 44, which form a pair of bevel gears. The axes of rotation of the gears are arranged at right angles to one another, and teeth 42, 49 of the gears mesh with one another.
  • the gear 44 is on one cylindrical shell-shaped portion 45 of the housing 40 rotatably mounted.
  • a shaft 39 of the gear 43 is rotatably supported by its end 66 in the housing 40.
  • a cylinder tube 46 is arranged in the interior of the section 45 and in a cylindrical recess of the housing 40 in the extension of the section 45 and is connected to the housing 40 in a non-rotatable manner.
  • This cylinder tube 46 serves as a bearing for a hub-shaped part 37 of the gearwheel 44.
  • An adapter 48 is in turn rotatably mounted on this part 37, which has the shape of a cylindrical drum open on one side, on which the winding tube 34 is fastened non-rotatably.
  • Adapter 48 and part 37 of gear 44 are secured on cylinder tube 46 by means of a securing element 51 against horizontal displacement.
  • the adapter 48 is a plastic injection-molded part and has a honeycomb-shaped and thus stable structure to save material.
  • the mode of operation of the unwinding locking device according to the invention in connection with the drive having the freewheel device is as follows:
  • the spring arranged in the leg 20 spreads the legs 18, 20 apart.
  • the nose of the pawl 54 is in engagement with an edge of the recess 55 (further pawls and further recesses can also be provided).
  • the running nut 80 is transported from the position shown in FIG. 2 on the spindle in the direction of the stops 78.
  • the stops 78, 81 hit each other, so that a further unwinding movement of the winding tube 34 is prevented.
  • the spring force of the tension spring in the leg 20 ensures that the awning fabric 14 remains taut. If the crank rod 26 should be turned further in the sense of unwinding, the pawl 54 comes out of engagement with the edge of the recess 55; this pawl leans with its inclined surface against another edge of the recess 55 and is pressed inwards into the chamber 53. This process can be repeated at other cutouts of the gear 44.
  • the two gearwheels 43, 44 thus run in freewheel mode, while the winding tube 34 is locked by the running nut 80.
  • the crank rod 26 is rotated in the opposite direction.
  • the pawl 54 comes back into engagement with the first-mentioned edge of the recess 55 or a corresponding other edge, so that the winding tube 34 is carried along.
  • the stops 78, 81 separate from one another again and the running nut 80 runs in the direction of the drive.
  • An important advantage of the invention is that the user can choose the desired unwind position.
  • the awning fabric 14 is unwound to the intended unwinding position.
  • the screw 75 is loosened so far that the pin part 76 is rotatable in the hole 71.
  • the key mentioned is inserted into the recess 79 and the spindle 72 is rotated until the running nut 80 strikes with its stop 81 against the stop 78 of the spindle 72.
  • the screw 75 is tightened again.
  • screw 75 can be designed as a wing screw and the pin part can be provided with a fixed crank.
  • the barrel nut is made of plastic and can therefore be manufactured inexpensively because the freewheel device 53, 54, 55 possible further damage to the stops 81, 82 and when the crank rod 26 continues to rotate after reaching the unwinding desired position Internal thread of the nut 80 prevented.
  • Another advantage of the invention is that the provision of stops 78 on the spindle 72 and stops 81, 82 on the running nut 80 prevents the running nut 80 from seizing up.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Building Awnings And Sunshades (AREA)
  • Transmission Devices (AREA)

Abstract

The invention relates to an extension limiter (70, 72, 80) for awnings with a roller tube (34) operating with a drive (32), an awning fabric (14) and extension arms (16) which exert enough force on the fabric (10) sic to unroll it. The extension limiter (70, 72, 80) can be adjusted and set.

Description

Ausfallbegrenzung für MarkisenLimitation of failure for awnings
Die Erfindung betrifft eine Ausfallbegrenzung für Markisen nach dem Oberbegriff des Anspruches 1.The invention relates to a limitation of failure for awnings according to the preamble of claim 1.
Eine derartige Markise ist beispielsweise durch die DE-C1 -4014962 bekannt. Die Markise ist dort mit einer Bremsvorrichtung versehen, die durch mindestens eine Bremsfeder in Form einer Schraubenfeder gebildet ist, die zwischen dem angetriebenen Zahnrad des Getriebes und einem mit dem Getriebegehäuse fest verbundenen Stück angeordnet ist und die mit einem abgewinkelten Ende in einer Nut gehalten wird, die sich in einer mit diesem Zahnrad fest verbundenen Nabe befindet, wobei dieses Zahnrad das Wickelrohr trägt. Diese Bremsvorrichtung verhindert ein selbständiges und ungewolltes Abwickeln des Markisentuchs und gleichzeitig Vibrationen des Wickelrohrs während bestimmter Arbeitslagen der Ausfallarme. Ein Nachteil dieser bekannten Markise besteht jedoch darin, daß beim Weiterdrehen des Getriebes in Abwickelrichtung in demjenigen Fall, in dem die Abwickel-Sollstellung des Markisentuchs bereits erreicht ist, weiteres Markisentuchmaterial abgewickelt wird, so daß das Markisentuch nicht mehr straff gespannt ist, der Wind das Markisentuch ballonartig aufblasen und zerreißen kann.Such an awning is known for example from DE-C1-4014962. There the awning is provided with a braking device which is formed by at least one brake spring in the form of a helical spring which is arranged between the driven gear of the transmission and a piece which is fixedly connected to the transmission housing and which is held in a groove with an angled end, which is located in a hub firmly connected to this gearwheel, this gearwheel carrying the winding tube. This braking device prevents the awning fabric from unintentionally and unintentionally unwinding and at the same time vibrates the winding tube during certain working positions of the extension arms. A disadvantage of this known awning, however, is that when the gear is turned further in the unwinding direction, in the case in which the desired unwinding position of the awning fabric has already been reached, further awning fabric material is unwound, so that the awning fabric is no longer taut, the wind that Can inflate and tear awning cloth like a balloon.
Die Aufgabe der Erfindung besteht daher darin, eine Markise der eingangs genannte n Art zu schaffen, bei der das weitere Abwickeln von Markisentuchmaterial nach Erreichen der Abwickelsollstellung des Markisentuchs verhindert wird.The object of the invention is therefore to provide an awning of the type mentioned above, in which the further unwinding of awning fabric material is prevented after the awning fabric has reached the unwinding desired position.
Die gestellte Aufgabe wird erfindungsgemaß durch die Merkmale des Anspruches 1 gelöst.The object is achieved according to the invention by the features of claim 1.
Man erkennt, daß die Erfindung jedenfalls dann verwirklicht ist, wenn es sich um eine Ausfallbegrenzung handelt, die mit hoher Genauigkeit einstellbar ist, so daß sie praktisch zeitgleich mit Erreichen der Abwickel-Sollstellung des Markisentuchs greift. Die Einstellung der Ausfallbegrenzung kann hierbei so erfolgen, daß zunächst das Markisen-Material abgewickelt wird, und zwar bis zur Erreichung der Abwickel-Sollstellung, in der das Markisentuch noch unter Spannung steht und die Ausfallarme ihre maximale Ausfahr-Lage erreicht haben. Danach wird die Ausfallbegrenzung derart eingestellt, daß ein werteres Verdrehen des Wickelrohres nicht mehr möglich ist, so daß auch bei einer weiteren Betätigung der Kurbelstange verhindert wird, daß die Spannung des Tuches nachläßt. Die Ausfallbegrenzung ist in bezug auf das Getriebe vorzugsweise am gegenüberliegenden Ende des Wickelrohres angeordnet und um die Achse des Wickelrohres verdreh- und einstellbar. Da das Verdrehen der Ausfallbegrenzung kontinuierlich erfolgt, kann die gewünschte Betriebsposition der Ausfallbegrenzung mit absoluter Genauigkeit eingestellt werden. Hinzu kommt, daß durch die räumliche Trennung der Ausfallbegrenzung vom Getriebe eine Entlastung des Getriebes erreicht wird.It can be seen that the invention is implemented in any case if there is a failure limitation that can be set with high accuracy, so that it intervenes practically at the same time as the desired position of the awning fabric is reached. The adjustment of the failure limit can be done in such a way that the awning material is first unwound, until the desired unwinder position is reached, in which the awning fabric is still under tension and the failure arms have reached their maximum extension position. Then the failure limit is set such that a further twisting of the winding tube is no longer possible, so that even when the crank rod is actuated further, the tension of the cloth is reduced. The failure limitation is preferably arranged at the opposite end of the winding tube with respect to the transmission and can be rotated and adjusted about the axis of the winding tube. As the rotation of the failure limitation is carried out continuously, the desired operating position of the failure limitation can be set with absolute accuracy. Come in addition, that the spatial separation of the failure limitation from the gearbox relieves the gearbox.
Weitere zweckmäßige und vorteilhafte Ausgestaltungen der Erfindung gehen aus den Unteransprüchen hervor.Further expedient and advantageous refinements of the invention emerge from the subclaims.
Eine e infache Ausgestaltung der Erfi nd u ng sieht vo r, da ß d ie Arretierungsvorrichtung eine Spindel, die mit einem Zapfenteil in der Lagerplatte des Gegenlagers lösbar befestigt ist und einen in das Wickelrohr ragenden Gewindeteil aufweist, und eine Laufmutter umfaßt, die auf dem Gewindeteil läuft und die mit ihrer Umfangsfläche in einem das Wickelrohr tragenden Lagertopf radial unverdrehbar und axial verschiebbar gelagert ist.A simple embodiment of the invention provides that the locking device comprises a spindle, which is detachably fastened with a pin part in the bearing plate of the counter-bearing and has a threaded part protruding into the winding tube, and a running nut, which on the Threaded part runs and which is supported with its peripheral surface in a radially non-rotatable and axially displaceable in a bearing pot carrying the winding tube.
Die Einstellung der Abwickelsollstellung kann zweckmäßigerweise dadurch erfolgen, daß der Zapfenteil der Spindel auf seiner Stirnseite ein Mittel zur Drehung im Loch der Lagerplatte aufweist und daß in dieser Lagerplatte ein bis zum Loch hin führender Spalt vorgesehen ist, der mittels einer Schraube zum Festklemmen des Zapfenteils verengt werden kann.The setting of the unwinding setpoint can expediently take place in that the pin part of the spindle has on its end face a means for rotation in the hole in the bearing plate and in that a plate leading to the hole is provided in this bearing plate, which narrows by means of a screw for clamping the pin part can be.
Um die Laufmutter vor einem möglichen Festlaufen zu schützen, sieht eine weitere Ausbildung der Erfindung vor, daß die Spindel mit einem mindestens einem Anschlag aufweisendem Bund und die Laufmutter mit mindestens einem Anschlag versehen ist, die an die Spindelanschläge anschlagbar sind.In order to protect the barrel nut from possible jamming, a further embodiment of the invention provides that the spindle is provided with a collar having at least one stop and the barrel nut is provided with at least one stop which can be struck against the spindle stops.
Gemäß einer weiteren Ausgestaltung der Erfindung arbeitet d ie Arretierungsvorrichtung mit einer Freilaufvorrichtung zusammen, die zwischen dem Getriebe und dem Wickelrohr derart wirkt, daß sie nach Erreichen der Abwickelsollstellung in den Freilaufzustand gerät. Die Laufmutter wird dadurch nicht von dem Druck belastet, der beim Weiterdrehen des Getriebes nach Erreichen der Abwickel-Sollstellung erzeugt wird. Daher kann die Laufmutter Erreichen der Abwickel-Sollstellung erzeugt wird. Daher kann die Laufmutter vorteilhafterweise aus Kunststoff bestehen.According to a further embodiment of the invention, the locking device works together with a freewheel device, which acts between the gearbox and the winding tube in such a way that it reaches the freewheeling state after the unwinding setpoint position has been reached. As a result, the running nut is not burdened by the pressure which is generated when the gearbox continues to rotate after the desired unwinding position has been reached. Therefore, the barrel nut Reaching the unwind set position is generated. Therefore, the barrel nut can advantageously be made of plastic.
Die Erfindung wird nun anhand eines Ausführungsbeispiels näher erläutert. Es zeigen:The invention will now be explained in more detail using an exemplary embodiment. Show it:
Fig. 1 einen Teil einer Markise in einer Ansicht schräg von oben,1 is a part of an awning in a view obliquely from above,
Fig. 2 eine Seitenansicht eines das Getriebe aufweisenden Lagers (rechts) für das Wickelrohr und des Gegenlagers (links) für das Wickelrohr mit der Abwickelarretierungsvorrichtung, wobei die Lager teilweise im Schnitt dargestellt sind,2 shows a side view of a bearing having the gear (right) for the winding tube and the counter bearing (left) for the winding tube with the unwinding locking device, the bearings being partially shown in section,
Fig. 3 eine Rückansicht einer mit dem Wickelrohr unverdrehbar verbundenen Laufmutter,3 shows a rear view of a running nut which is connected non-rotatably to the winding tube,
Fig. 4 eine Seitenansicht der Laufmutter in Fig. 3 und einen Teilschnitt dieser Laufmutter längs der Linie A-A in Fig. 3 undFig. 4 is a side view of the barrel nut in Fig. 3 and a partial section of this barrel nut along the line A-A in Fig. 3 and
Fig. 5 eine Draufsicht auf die Stirnseite der Laufmutter in Fig. 3.5 is a plan view of the face of the barrel nut in FIG .. 3
Die in Fig. 1 dargestellte Markise hat eine an einer Hauswand oder dergleichen zu befestigende Trageinrichtung, die mit einem in Lagerplatten 30, 30' (Figuren 1 und 2) drehbar gelagerten Wickelrohr 34 versehen ist. Das Wickelrohr 34 ist mittels eines Getriebes 32 bewegbar, und zwar über eine ein- bzw. aushängbare Kurbelstange 26, die in eine Betätigungsöse 28 einhängbar ist. An einem zwischen den Lagerplatten 30 angeordneten Tragrohr 24 sind zwei Ausfallarme befestigt, von denen nur einer, der Ausfallarm 16, gezeigt ist. Der Ausfallarm 16 besteht aus zwei mittels eines Gelenks 22 gelenkig miteinander verbundenen Schenkeln 18, 20, von denen der Schenkel 18 an einem mit der Tragwelle verbundenen Teil 36 mittels eines Gelenks 38 und der Schenkel 20 an einem das Markisentuch 14 spannenden Fallrohr 10 mittels eines Gelenks 22' drehbar befestigt ist. Das Fallrohr 10 kann auch einen Volant 12 tragen. Die Gelenke 22, 22', 38 gewährleisten das Zusammenklappen des Ausfallarms 16 in einer Ebene. Die Schenkel 18, 20 sind als Rohre ausgebildet. Im Inneren des rohrförmigen Schenkels 20 ist in nicht dargestellter Weise eine Zugefeder angeordnet, die einerseits am Gelenk 22' und andererseits über ein durch den rohrförmigen Schenkel 18 verlaufendes, nicht dargestelltes Seil am Gelenk 38 befestigt ist. Diese Zugfeder ist stets so gespannt, daß sie im Sinne eines Auseinanderklappens der Schenkel 18, 20 wirkt. Beim Verdrehen der Betätigungsöse 28 mittels der Kurbelstange 26 bewegt sich das Fallrohr 10 in Richtung des Doppelpfeils 13. Das Teil 36 kann als Neigungsverstelleinrichtung ausgebildet sein, bei deren Betätigung das Fallrohr 10 in Richtung des Doppelpfeiles 15 bewegbar ist.The awning shown in FIG. 1 has a support device to be fastened to a house wall or the like, which is provided with a winding tube 34 rotatably mounted in bearing plates 30, 30 '(FIGS. 1 and 2). The winding tube 34 can be moved by means of a gear 32, specifically via a crank rod 26 which can be hooked in or hooked out and which can be hooked into an actuating eyelet 28. Two extension arms are fastened to a support tube 24 arranged between the bearing plates 30, only one of which, the extension arm 16, is shown. The extension arm 16 consists of two legs 18, 20 which are connected to one another in an articulated manner by means of a joint 22, of which the leg 18 is connected to the support shaft connected part 36 is rotatably fastened by means of a joint 38 and the leg 20 to a downspout 10 exciting the awning fabric 14 by means of a joint 22 '. The downpipe 10 can also wear a valance 12. The joints 22, 22 ', 38 ensure that the extension arm 16 collapses in one plane. The legs 18, 20 are designed as tubes. In the interior of the tubular leg 20, a tension spring is arranged in a manner not shown, which is attached on the one hand to the joint 22 'and on the other hand to the joint 38 via a rope (not shown) running through the tubular leg 18. This tension spring is always so tensioned that it acts in the sense of unfolding the legs 18, 20. When the actuating eyelet 28 is rotated by means of the crank rod 26, the downpipe 10 moves in the direction of the double arrow 13. The part 36 can be designed as an inclination adjustment device, when the downpipe 10 is actuated in the direction of the double arrow 15.
Das in Fig. 1 nicht sichbare Gegenlager für das Wickelrohr 34 ist auf der rechten Seite der Fig. 2 dargestellt. Es besteht aus einem versteiften Lagertopf 70, der mit einer zentrischen Öffnung 71 auf einem Zapfenteil 76 einer Spindel 72 drehbar gelagert ist. Am Umfang des Topfes 70 sind achsparallele Rippen 73 gleichmäßig verteilt, die in dazu passende, achsparallele, nicht dargestellte Nuten am Innenumfang des Wickelrohrs 34 eingreifen, so daß der Topf 70 mit dem Wickelrohr 34 unverdrehbar verbunden ist. Der Zapfenteil 76 ist in einem Loch 72 in der Lagerplatte 30' unverdrehbar befestigbar. Dazu weist die Lagerplatte 30' einen nicht gezeigten, oberhalb des Zapfenteils 76 vertikal verlaufenden Schlitz auf, der mittels einer Schraube 75 verengt werden kann, so daß der Zapfenteil 76 festgeklemmt werden kann. Der Zapfenteil 76 weist stirnseitig eine Ausnehmung 79 auf, in die ein nicht dargestellter Schlüssel zum Verdrehen des Zapfenteils 76 und damit der Spindel 72 gesteckt werden kann. Die Spindel 72 hat einen zwei Anschläge tragenden Bund, wobei nur ein Anschlag 78 dargestellt ist, und ein Gewindeteil 77, auf dem eine mit einem Innengewinde versehene Laufmutter 80 läuft. Die Laufmutter 80 weist auf der dem Anschlag 78 zugewandten Seite zwei Anschläge 81 , 82 auf und ist an ihrem Außenumfang im Topf 70 radial unverdrehbar, aber axial beweglich gelagert.The counter bearing, not visible in FIG. 1, for the winding tube 34 is shown on the right side of FIG. 2. It consists of a stiffened bearing pot 70 which is rotatably mounted with a central opening 71 on a pin part 76 of a spindle 72. On the circumference of the pot 70, axially parallel ribs 73 are evenly distributed, which engage in matching axially parallel grooves, not shown, on the inner circumference of the winding tube 34, so that the pot 70 is non-rotatably connected to the winding tube 34. The pin part 76 is non-rotatably fastened in a hole 72 in the bearing plate 30 '. For this purpose, the bearing plate 30 'has a slot, not shown, which runs vertically above the pin part 76 and which can be narrowed by means of a screw 75, so that the pin part 76 can be clamped. The end of the pin part 76 has a recess 79, into which a key (not shown) for turning the pin part 76 and thus the spindle 72 can be inserted. The spindle 72 has a two-stop collar, only one stop 78 is shown, and a threaded part 77, on which an internally threaded barrel nut 80 runs. The running nut 80 has two on the side facing the stop 78 Stops 81, 82 and is mounted on its outer circumference in the pot 70 in a radially non-rotatable but axially movable manner.
Der Aufbau der Laufmutter 80 geht näher aus den Figuren 3 bis 5 hervor. Wie die Rückansicht der Laufmutter 80 in Fig. 3 zeigt, hat diese Laufmutter einen im Querschnitt etwa achteckigen Außenmantel mit zwischen den Ecken nach innen gebogenen Mantelseiten 84, deren Mitten mit einem das Innengewinde tragenden Gewindering 85 verstrebt sind, so daß acht Kammern gebildet sind, wobei die Laufmutter 80 trotzdem stabil bleibt. Die genannte Stirnseite trägt die zwei Anschläge 81 , 82. Wie an der Stelle des Anschlags 81 gezeigt ist, hat dieser Anschlag eine die Form eines Kreisringabschnitts aufweisende Fläche, die von einer Außenkante 86, einer Innenkante 87 und zwei radialen Seitenkanten 88, 89 begrenzt ist. Dabei bildet die Außenkante 86 einen Kreisabschnitt mit größerem Radius, während die Innenkante 87 einen Kreisabschnitt mit kleinerem Radius darstellt. Von der Seitenkante 88 aus steigt die Fläche gleichmäßig bis zur Seitenkante 89 an. Das gleiche gilt für den Anschlag 82. Vorzugsweise besteht diese Laufmutter 80 aus Kunststoff oder Metall.The structure of the running nut 80 is shown in more detail in FIGS. 3 to 5. As the rear view of the running nut 80 in FIG. 3 shows, this running nut has an outer jacket which is approximately octagonal in cross section with jacket sides 84 bent inwards between the corners, the centers of which are braced with a threaded ring 85 which carries the internal thread, so that eight chambers are formed, while the nut 80 remains stable. Said end face carries the two stops 81, 82. As shown at the location of the stop 81, this stop has a surface in the form of a circular ring section which is delimited by an outer edge 86, an inner edge 87 and two radial side edges 88, 89 . The outer edge 86 forms a circular section with a larger radius, while the inner edge 87 represents a circular section with a smaller radius. From the side edge 88, the surface rises evenly to the side edge 89. The same applies to the stop 82. This running nut 80 is preferably made of plastic or metal.
Der Topf 70 hat eine an die Mantelseiten 84 angepaßte Innenform und ist demnach mit zwei bis acht runden Innenlängsrippen versehen, auf denen die Laufmutter 80 axial gleiten kann. Die Anschläge 78 der Spindel 72 sind dual zu den Anschlägen 81 , 82 ausgebildet, so daß die Kanten 89 an entsprechenden Kanten der Anschläge 78 anschlagen können.The pot 70 has an inner shape adapted to the jacket sides 84 and is accordingly provided with two to eight round inner longitudinal ribs on which the running nut 80 can slide axially. The stops 78 of the spindle 72 are designed to be dual to the stops 81, 82, so that the edges 89 can strike corresponding edges of the stops 78.
Auf der rechten Seite der Fig. 2 ist der Antrieb für das Wickelrohr 34 dargestellt. Dieser Antrieb kann mit Vorteil bei der Erfindung verwendet werden. Es sind jedoch auch andere Antriebe einsetzbar. Das Getriebe besteht aus einem Gehäuse 40 mit zwei Zahnrädern 43, 44, die ein Kegelradpaar bilden. Die Drehachsen der Zahnräder sind rechtwinklig zueinander angeordnet, und Zähne 42,49 der Zahnräd er kämmen miteinander. Das Zahnrad 44 ist auf einem zylindermantelförmigen Abschnitt 45 des Gehäuses 40 drehbar gelagert. Eine Welle 39 des Zahnrads 43 ist mit ihrem Ende 66 im Gehäuse 40 drehbar gelagert. Ein Zylinderrohr 46 ist im Inneren des Abschnitts 45 und in einer zylinderförmigen Aussparung des Gehäuses 40 in Verlängerung des Abschnitts 45 zentrisch angeordnet und mit dem Gehäuse 40 unverdrehbar verbunden. Dieses Zylinderrohr 46 dient als Lager für einen nabenförmigen Teil 37 des Zahnrads 44. Auf diesem Teil 37 ist wiederum ein Adapter 48 drehbar gelagert, der die Form einer nach einer Seite offenen, zylindrischen Trommel hat, auf der das Wickelrohr 34 unverdrehbar befestigt ist. Adapter 48 und der Teil 37 des Zahnrads 44 sind am Zylinderrohr 46 mittels eines Sicherungselementes 51 gegen eine horizontale Verschiebung gesichert. Eine nicht dargestellte Rippe im Inneren des Wickelrohrs 34 greift in eine nicht dargestellte Längsnut am Außenumfang des Adapters 48 ein, so daß dieser Adapter zusammen mit dem Wickelrohr 34 auf dem Teil 37 drehbar ist. Der Adapter 48 ist ein Kunststoffspritzteil und hat aus Materialersparnisgründen einen wabenfδrmigen und damit stabilen Aufbau.The drive for the winding tube 34 is shown on the right side of FIG. 2. This drive can be used with advantage in the invention. However, other drives can also be used. The transmission consists of a housing 40 with two gear wheels 43, 44, which form a pair of bevel gears. The axes of rotation of the gears are arranged at right angles to one another, and teeth 42, 49 of the gears mesh with one another. The gear 44 is on one cylindrical shell-shaped portion 45 of the housing 40 rotatably mounted. A shaft 39 of the gear 43 is rotatably supported by its end 66 in the housing 40. A cylinder tube 46 is arranged in the interior of the section 45 and in a cylindrical recess of the housing 40 in the extension of the section 45 and is connected to the housing 40 in a non-rotatable manner. This cylinder tube 46 serves as a bearing for a hub-shaped part 37 of the gearwheel 44. An adapter 48 is in turn rotatably mounted on this part 37, which has the shape of a cylindrical drum open on one side, on which the winding tube 34 is fastened non-rotatably. Adapter 48 and part 37 of gear 44 are secured on cylinder tube 46 by means of a securing element 51 against horizontal displacement. A rib, not shown, in the interior of the winding tube 34 engages in a longitudinal groove, not shown, on the outer circumference of the adapter 48, so that this adapter can be rotated together with the winding tube 34 on the part 37. The adapter 48 is a plastic injection-molded part and has a honeycomb-shaped and thus stable structure to save material.
Die Kupplung des Zahnrads 44 mit dem Adapter 48 und damit dem Wickelrohr 34 erfolgt nun mit einer Freilaufvorrichtung, die in Fig. 1 durch eine Kammer 53 des Adapters 48, eine in dieser Kammer geführte, federnde Klinke 54 und durch eine im Zahnrad 44 gebildete Ausnehmung 55 oder eine Scheibe angedeutet ist, in die die Klinke 54 kraftschlüssig eingreifen kann.The coupling of the gearwheel 44 with the adapter 48 and thus the winding tube 34 now takes place with a freewheel device, which in FIG. 1 has a chamber 53 of the adapter 48, a resilient pawl 54 guided in this chamber and a recess formed in the gearwheel 44 55 or a disc is indicated, in which the pawl 54 can engage non-positively.
Die Wirkungsweise der Abwickelarretierungsvorrichtung gemäß der Erfindung in Verbindung mit dem die Freilaufvorrichtung aufweisenden Antrieb ist folgende: Beim Abwickeln des Markisentuchs 14 mittels der Kurbelstange 26 spreizt die im Schenkel 20 angeordnete Feder die Schenkel 18, 20 auseinander. Dabei ist die Nase der Klinke 54 mit einer Kante der Ausnehmung 55 im Eingriff (Es können auch weitere Klinken und weitere Ausnehmungen vorgesehen sein). Auf die Kurbelstange 26 braucht kein Druck ausgeübt zu werden, da die Zugkraft der im Schenkel 20 angeordneten Feder ausreicht, das Markisentuch abzuwickeln. Bei diesem Abwickelvorgang wird die Laufmutter 80 aus der in Fig. 2 dargestellten Stellung auf der Spindel in richtung auf die Anschläge 78 transportiert. Ist die Abwickelsollstellung des Markisentuchs 14 erreicht, schlagen die Anschläge 78, 81 (und die beiden anderen Anschläge) aneinander, so daß eine weitere gleichsinnige Abwickelbewegung des Wickelrohrs 34 verhindert wird. Die Federkraft der Zugfeder im Schenkel 20 sorgt dafür, daß das Markisentuch 14 straff gespannt bleibt. Wenn die Kurbelstange 26 im Sinne des Abwickeins weitergedreht werden sollte, gerät die Klinke 54 mit ihrer Nase außer Eingriff mit der Kante der Ausnehmung 55; diese Klinke lehnt sich mit ihrer Schrägfläche gegen eine andere Kante der Ausnehmung 55 und wird nach innen in die Kammer 53 gedrückt. Dieser Vorgang kann sich an anderen Aussparungen des Zahnrads 44 wiederholen. Damit laufen die beiden Zahnräder 43, 44 im Freilauf, während das Wickelrohr 34 durch die Laufmutter 80 arretiert ist.The mode of operation of the unwinding locking device according to the invention in connection with the drive having the freewheel device is as follows: When the awning fabric 14 is unwound by means of the crank rod 26, the spring arranged in the leg 20 spreads the legs 18, 20 apart. The nose of the pawl 54 is in engagement with an edge of the recess 55 (further pawls and further recesses can also be provided). No pressure needs to be exerted on the crank rod 26, since the tensile force of the spring arranged in the leg 20 is sufficient to unwind the awning fabric. at this unwinding operation, the running nut 80 is transported from the position shown in FIG. 2 on the spindle in the direction of the stops 78. If the unwinding set position of the awning fabric 14 is reached, the stops 78, 81 (and the other two stops) hit each other, so that a further unwinding movement of the winding tube 34 is prevented. The spring force of the tension spring in the leg 20 ensures that the awning fabric 14 remains taut. If the crank rod 26 should be turned further in the sense of unwinding, the pawl 54 comes out of engagement with the edge of the recess 55; this pawl leans with its inclined surface against another edge of the recess 55 and is pressed inwards into the chamber 53. This process can be repeated at other cutouts of the gear 44. The two gearwheels 43, 44 thus run in freewheel mode, while the winding tube 34 is locked by the running nut 80.
Beim Aufwickelvorgang wird die Kurbelstange 26 in Gegenrichtung gedreht. Dabei gerät die Klinke 54 mit ihrer Nase wieder in den Eingriff mit der erstgenannten Kante der Ausnehmung 55 oder einer entsprechenden anderen Kante, so daß das Wickelrohr 34 mitgenommen wird. Dabei trennen sich die Anschläge 78, 81 wieder voneinander und die Laufmutter 80 läuft in Richtung des Antriebs.During the winding process, the crank rod 26 is rotated in the opposite direction. In this case, the pawl 54 comes back into engagement with the first-mentioned edge of the recess 55 or a corresponding other edge, so that the winding tube 34 is carried along. The stops 78, 81 separate from one another again and the running nut 80 runs in the direction of the drive.
Ein wichtiger Vorteil der Erfindung besteht darin, daß der Benutzer die Abwickelsollstellung beliebig wählen kann. Zu diesem Zweck wird das Markisentuch 14 bis in die vorgesehene Abwickelsollstellung abgewickelt. Dann wird die Schraube 75 soweit gelöst, daß der Zapfenteil 76 im Loch 71 drehbar ist. Dann wird der erwähnte Schlüssel in die Ausnehmung 79 gesteckt und die Spindel 72 solange gedreht, bis die Laufmutter 80 mit ihrem Anschlag 81 an den Anschlag 78 der Spindel 72 anschlägt. Schließlich wird die Schraube 75 wieder festgezogen. Zur leichteren Einstellung der Abwickel-Sollstellung kann die Schraube 75 als Fiügelschraube ausgebildet und der Zapfenteil mit einer festen Kurbel versehen sein. Ein weiterer Vorteil der Erfindung liegt darin, daß die Laufmutter aus Kunststoff besteht und damit preiswert gefertigt werden kann, weil die Freilaufvorrichtung 53, 54, 55 beim Weiterdrehen der Kurbelstange 26 nach Erreichen der Abwickel- Sollstellung eine mögliche Beschädigung der Anschläge 81 , 82 und des Innengewindes der Laufmutter 80 verhindert.An important advantage of the invention is that the user can choose the desired unwind position. For this purpose, the awning fabric 14 is unwound to the intended unwinding position. Then the screw 75 is loosened so far that the pin part 76 is rotatable in the hole 71. Then the key mentioned is inserted into the recess 79 and the spindle 72 is rotated until the running nut 80 strikes with its stop 81 against the stop 78 of the spindle 72. Finally, the screw 75 is tightened again. To make it easier to set the desired unwind position, screw 75 can be designed as a wing screw and the pin part can be provided with a fixed crank. Another advantage of the invention is that the barrel nut is made of plastic and can therefore be manufactured inexpensively because the freewheel device 53, 54, 55 possible further damage to the stops 81, 82 and when the crank rod 26 continues to rotate after reaching the unwinding desired position Internal thread of the nut 80 prevented.
Ein weiterer Vorteil der Erfindung besteht darin, daß durch das Vorsehen von Anschlägen 78 an der Spindel 72 und Anschlägen 81, 82 an der Laufmutter 80 ein mögliches Festlaufen der Laufmutter 80 verhindert wird. Another advantage of the invention is that the provision of stops 78 on the spindle 72 and stops 81, 82 on the running nut 80 prevents the running nut 80 from seizing up.

Claims

Aπspruche Claims
1. Ausfallbegrenzung (70,72,80) für Markisen mit einem Wickelrohr (34), das mit einem Getriebe (32) zusammenarbeitet, einem Markisentuch (14) sowie Ausfallarmen (16), die eine zur Abwicklung ausreichende Kraft auf das Markisentuch (14) ausüben, dadurch gekennzeichnet, daß die Ausfallbegrenzung (70,72,80) einstellbar und feststellbar ist. ist.1. Limitation of failure (70, 72, 80) for awnings with a winding tube (34) that works together with a gear (32), an awning cover (14) and extension arms (16) that exert sufficient force on the awning cover (14 ), characterized in that the failure limitation (70,72,80) is adjustable and lockable. is.
2. Ausfallbegrenzung nach Anspruch 1 , dadurch gekennzeichnet, daß die Ausfallbegrenzung (70,72,80) als eine Arretierungsvorrichtung ausgebildet ist.2. Failure limitation according to claim 1, characterized in that the failure limitation (70,72,80) is designed as a locking device.
3. Ausfallbegrenzung nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Ausfallbegrenzung (70,72,80) an dem einen Ende des Wickelrohres (34) angeordnet, während das Getriebe (32) am anderen Ende des Wickelrohres (34) positioniert ist.3. Failure limitation according to one of claims 1 or 2, characterized in that the failure limitation (70, 72, 80) is arranged at one end of the winding tube (34), while the gear (32) is positioned at the other end of the winding tube (34) is.
4. Ausfallbegrenzung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Arretierungsvorrichtung eine Spindel (72), die mit einem Zapfenteil (76) in der Lagerplatte (30') des Gegenlagers lösbar befestigt ist und einen in das Wickelrohr (34) ragenden Gewindeteil (77) aufweist, und eine Laufmutter (80) umfaßt, die auf dem Gewindeteil (77) läuft und die mit ihrer Umfangsfläche in einem das Wickelrohr (34) tragenden Lagertopf (70) radial unverdrehbar und axial verschiebbar gelagert ist.4. Failure limitation according to one of claims 1 to 3, characterized in that the locking device is a spindle (72) with a pin part (76) is detachably fastened in the bearing plate (30 ') of the counterbearing and has a threaded part (77) projecting into the winding tube (34), and comprises a running nut (80) which runs on the threaded part (77) and which runs with it Circumferential surface in a bearing pot (70) carrying the winding tube (34) is mounted in a radially non-rotatable and axially displaceable manner.
5. Ausfallbegrenzung nach Anspruch 4, dadurch gekennzeichnet, daß der Zapfenteil (76) der Spindel (72) auf seiner Stirnseite ein Mittel (79) zur Drehung im Loch (71) der Lagerplatte (30') aufweist und daß in dieser Lagerplatte ein bis zum Loch (71) führender Spalt vorgesehen ist, dessen Breite mittels einer Schraube (75) zum Festklemmen des Zapfenteils (76) veränderbar ist.5. Failure limitation according to claim 4, characterized in that the pin part (76) of the spindle (72) on its end face has a means (79) for rotation in the hole (71) of the bearing plate (30 ') and that in this bearing plate one to a gap leading to the hole (71) is provided, the width of which can be changed by means of a screw (75) for clamping the pin part (76).
6. Ausfallbegrenzung nach einem der Ansprüche 4 oder 5, dadurch gekennzeichnet, daß die Spindel (72) mit einem mindestens einem Anschlag (78) aufweisenden Bund und die Laufmutter (80) mit mindestens einem Anschlag (81, 82) versehen ist, die an die Spindelanschläge (78) anschlagbar sind.6. Failure limitation according to one of claims 4 or 5, characterized in that the spindle (72) with at least one stop (78) having collar and the barrel nut (80) with at least one stop (81, 82) is provided, which the spindle stops (78) can be stopped.
7. Ausfallbegrenzung nach Anspruch 6, dadurch gekennzeichnet, daß die Anschläge (78,81,82) durch jeweils eine Schrägfläche in Form eines Kreisringabschnitts gebildet sind, die von einer radialen Seitenkante (88) zur anderen radialen Seitentkante (89) ansteigt.7. Failure limitation according to claim 6, characterized in that the stops (78, 81, 82) are each formed by an inclined surface in the form of a circular ring section, which rises from one radial side edge (88) to the other radial side edge (89).
8. Ausfallbegrenzung nach einem der Ansprüche 4 bis 7, dadurch gekennzeichnet, daß die Laufmutter (80) einen im Querschnitt etwa achteckigen Außenmantel mit zwischen den Ecken nach innen gebogenen Mantelseiten (84) aufweist, deren Mitten mit einem das Innengewinde tragenden Gewindering (85) verstrebt sind, so daß mehrere Kammern gebildet sind, die zur Stirnseite (Fig. 5) der Laufmutter (80) hin geschlossen sind.8. Failure limitation according to one of claims 4 to 7, characterized in that the barrel nut (80) has an approximately octagonal in cross section Outer jacket with jacket sides (84) bent inwards between the corners, the centers of which are braced with a threaded ring (85) carrying the internal thread, so that several chambers are formed which are closed towards the end face (FIG. 5) of the running nut (80) are.
9. Ausfallbegrenzung nach einem der Ansprüche 4 bis 8, dadurch gekennzeichnet, daß die Laufmutter (80) aus Kunststoff besteht.9. Failure limitation according to one of claims 4 to 8, characterized in that the barrel nut (80) consists of plastic.
10. Ausfallbegrenzung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die Arretierungsvorrichtung (70,72,80) mit einer Freilaufvorrichtung (523,54,55) zusammenarbeitet.10. Failure limitation according to one of claims 1 to 9, characterized in that the locking device (70, 72, 80) cooperates with a freewheel device (523, 54, 55).
11. Ausfallbegrenzung nach Anspruch 10, dadurch gekennzeichnet, daß die die Freilaufvorrichtung (53,54,55) zwischen dem Getriebe (32) und dem Wickelrohr geschaltet ist, indem sie nach Erreichen der Abwickel- Sollstellung in den Freilaufzustand gerät.11. Failure limitation according to claim 10, characterized in that the free-wheeling device (53, 54, 55) is connected between the gear (32) and the winding tube by getting into the free-wheeling state after reaching the unwinding desired position.
12. Ausfallbegrenzung nach Anspruch 10, dadurch gekennzeichnet, daß die Freilaufvorrichtung ein Teil des Getriebes ist und mit der Antriebswelle in Wirkverbindung steht.12. Failure limitation according to claim 10, characterized in that the freewheel device is part of the transmission and is in operative connection with the drive shaft.
13. Ausfallbegrenzung nach Anspruch 10, dadurch gekennzeichnet, daß die Freilaufvorrichtung Teil der Kurbelstange ist, mit der das Getriebe zusammenarbeitet. 13. Failure limitation according to claim 10, characterized in that the freewheel device is part of the crank rod with which the transmission works.
EP96907347A 1995-09-28 1996-03-05 Extension limiter for awnings Ceased EP0795066A1 (en)

Priority Applications (1)

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DE29624357U DE29624357U1 (en) 1995-09-28 1996-03-05 Limitation of failure for awnings

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DE19536055 1995-09-28
DE19536055A DE19536055A1 (en) 1995-09-28 1995-09-28 Limitation of failure for awnings
PCT/EP1996/000913 WO1997012105A1 (en) 1995-09-28 1996-03-05 Extension limiter for awnings

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AU (1) AU5101596A (en)
DE (1) DE19536055A1 (en)
WO (1) WO1997012105A1 (en)

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DE19536055A1 (en) 1997-04-03
AU5101596A (en) 1997-04-17
WO1997012105A1 (en) 1997-04-03
US5921305A (en) 1999-07-13

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