EP0795065A1 - Awning drive - Google Patents

Awning drive

Info

Publication number
EP0795065A1
EP0795065A1 EP96907346A EP96907346A EP0795065A1 EP 0795065 A1 EP0795065 A1 EP 0795065A1 EP 96907346 A EP96907346 A EP 96907346A EP 96907346 A EP96907346 A EP 96907346A EP 0795065 A1 EP0795065 A1 EP 0795065A1
Authority
EP
European Patent Office
Prior art keywords
transmission according
gear
winding tube
freewheel
freewheel device
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
EP96907346A
Other languages
German (de)
French (fr)
Other versions
EP0795065B1 (en
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
Publication of EP0795065A1 publication Critical patent/EP0795065A1/en
Application granted granted Critical
Publication of EP0795065B1 publication Critical patent/EP0795065B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • 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
    • E04F10/0666—Accessories
    • E04F10/0674—Accessories acting as separate supporting bar

Definitions

  • the invention relates to a transmission for awnings according to the preamble of claim 1.
  • Such a transmission is known for example from DE-C 1-4014962.
  • the braking device is formed there by at least one brake spring in the form of a helical spring which is arranged between the driven gearwheel and a piece which is fixedly connected to the transmission housing and which is held with an angled end in a groove which is fixedly connected to this gearwheel Hub is located, this gearwheel carries 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 transmission is that when the transmission is operated further in the unwinding direction, in the case in which the unwinding set position of the awning fabric has already been reached, further awning fabric material is unwound, so that the awning fabric no longer is taut and the wind can inflate and tear the awning cover like a balloon.
  • the object of the invention is therefore to provide a transmission of the type mentioned, with which the further unwinding n of awning fabric is prevented after reaching the maximum extended position of the extension arms.
  • the invention is achieved in any case when the awning fabric is wound up and unwound by means of a device which essentially consists of a gear, a freewheel or overrunning clutch with a driving effect and a braking device which are so coordinated with one another that when unrolling the awning cover, the extension arms can be operated with minimal force from the user, up to their stop. If the crank rod is actuated further, no torque from the transmission is exerted on the winding tube. This results from the fact that the spring force of the extension arms no longer exerts any force on the awning fabric, while at the same time the braking force of the braking device is greater than the driving force of the freewheel which acts between the gear and the freewheel. When unwinding, a rotational force acts on the winding tube from the freewheel, which is preferably minimally greater than the difference between the force of the drop arms and the braking device.
  • a simple embodiment of the invention provides that the freewheel device is formed on the one hand by a number of recesses which are evenly distributed on an arc on the side opposite the drive side of the driven gear near the gear circumference and arranged to form at least one radial edge, and on the other hand, is formed by at least one spring-loaded pawl, which can be moved axially parallel in a chamber of an adapter non-rotatably connected to the winding tube and engages in the recesses.
  • the freewheel device can be produced inexpensively if, according to a further embodiment of the invention, the adapter is a plastic injection-molded part and if the pawl, which is also made of plastic, is provided with a flexible tab which is molded onto the bottom of the chamber near the axis.
  • the freewheel of the freewheel device starts when the spreading movement of the legs of the extension arms in the unwinding desired position of the awning fabric is limited by stops of these legs, these legs forming an obtuse angle. Since these legs form an obtuse angle at the beginning of the winding process, the winding force, the force acting on the pawls of the freewheel device is much lower than in the case in which these legs would be stretched.
  • the freewheel can establish the connection between the winding tube and the transmission. On the other hand, however, it can also be connected to part of the crank rod or between the transmission and the crank rod.
  • FIG. 3 shows a rear view of an adapter, which is connected to the winding tube in a non-rotatable manner, with a part of the freewheel device,
  • FIG. 4 shows a side view of the arrangement in FIG. 3 with a cut part of the freewheel device
  • FIG. 5 is a plan view of the front side A-A of the arrangement in FIG. 3,
  • Fig. 6 is a radial section along the line C-C in Fig. 3 at the point
  • Fig. 8 is a side view and a partial section of the gear in Fig. 7 along the line B-B and
  • Fig. 9 is a side view and a partial section of a counter bearing of
  • Winding tube with a braking device Winding tube with a braking device.
  • the awning shown in FIG. 1 has a support device to be fastened to the house wall or the like, which is provided with an angle tube 34 rotatably mounted in bearing plates 30, 30 '(FIGS. 1 and 9).
  • the angled tube 34 can be moved by means of a gear 32, specifically via a crank rod 26 which can be hooked in or 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 drop arm 16 consists of two legs 18, 20 articulated to one another by means of a joint 22, of which the leg 18 is rotatably fastened to a part 36 connected to the supporting shaft by means of a joint 38 and the leg 20 is rotatably fastened to a drop tube 10 which tensiones 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 fastened 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 gear 32 is shown in more detail in FIG. 2. It consists of a housing 40 with two gear wheels 43, 44, which form a bevel gear pair. The axes of rotation of the gears are arranged at right angles to one another, and the teeth 42, 49 of the gears mesh with one another.
  • the toothed wheel 44 is rotatably mounted on a cylindrical section 45 of the housing 40.
  • a shaft 39 of the gear 43 is rotatably supported by its end 66 in the housing 40.
  • a cylinder tube 46 is arranged centrally and non-rotatably connected to the housing 40.
  • 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.
  • FIG. 3 represents a plan view of the open side of the drum.
  • a rib, not shown, inside the angle tube 34 engages in a longitudinal groove 52 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 therefore stable structure for reasons of material savings.
  • This freewheel device is shown in more detail in FIGS. 3 to 8, the part of the freewheel device relating to the adapter 48 being shown in FIGS. 3 to 6 and the part of the freewheel device relating to the gear 44 being shown in FIGS. 7 and 8.
  • each pawl 54, 58, 59 made of plastic is resiliently guided so that it is biased towards the front of the adapter 48.
  • This spring preload is achieved in that each pawl has an elastic tab 62 which is injection-molded onto the end of the chamber by means of a web 63 (designations only for the pawl 54).
  • the pawl 54 has a nose 60, which normally protrudes from the end face of the adapter 48, and an inclined surface 61 extending in the peripheral direction of the adapter 48 (FIG. 4).
  • the other two pawls 58, 59 are designed accordingly. This structure of the pawl 54 is also apparent from the sectional view in FIG. 6.
  • the side of the gearwheel 34 opposite the end face of the adapter 48 is provided with six recesses, which are evenly distributed on a circular arc in the vicinity of the gearwheel circumference, the recess 55 being selected by way of example for closer inspection.
  • the recess 55 is delimited by an upper, arcuate edge 64 lying in the vicinity of the gear wheel periphery, a lower, arcuate edge 65 and two lateral, radially running edges 66, 67.
  • the bottom surface of the recess 55 runs parallel to the radial outside of the gear 44. However, it can also rise from the edge 66 to the edge 67.
  • the recess 55 is dimensioned so that the pawl 54 can be received in it, the nose 60 can strike the edge 66.
  • a braking device provided for the winding tube 34 will be described, which is located on the other end of the winding tube, which is opposite to the end of the winding tube shown in FIG. 2, and which is shown in FIG. 9.
  • FIG. 9 is shown on a smaller scale than FIG. 2.
  • the counter bearing of the winding tube 34 consists of a stiffened pot 70 which is rotatably mounted on a pin 72 with a central opening 71.
  • axially parallel ribs 73 are evenly distributed, which engage in matching, axially parallel grooves 74 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 72 is fixed non-rotatably in a hole in the bearing plate 30 '.
  • the bearing plate 30 has a slot, not shown, which runs vertically above the pin 72 and which can be narrowed by means of a screw 75, so that the pin 72 can be clamped in place.
  • a brake spring 76 is arranged in the form of an approximately two-start helical spring which nestles tightly against the pin 72 and which is fixed with a right-angled end 77 in a radial inner groove of the pot 70.
  • the pot 70 and the brake spring 76 are secured on the journal by means of a disk 78 and a securing element 79 against horizontal displacement.
  • the winding direction of the brake spring 76 is directed so that when unrolling the awning fabric 14, (Fig.
  • the operation of the freewheel device in conjunction with the braking device is as follows:
  • the spring arranged in the leg 20 spreads the legs 18, 20 apart.
  • the nose 60 (FIG. 4) of the pawl 54 engages with the edge 66 (FIG. 7).
  • the other two pawls 58, 59 the following consideration refers only to the pawl 54 by way of example.
  • No pressure need be exerted on the crank since the tensile force of the spring arranged in the leg 20 is sufficient, the awning fabric 14 against the braking force of the brake spring 76 (FIG. 9) and the transmission friction forces to handle.
  • a stop (not shown) on the joint 22 limits the further spreading movement of the legs 18, 20.
  • the legs 18, 20 do not form a straight line in this unwinding set position of the awning fabric 14, but rather an obtuse line Angle that makes it possible to initiate the unwinding movement of the awning fabric 14 with a certain force.
  • the tensile force previously exerted on the circumference of the winding tube 34 is eliminated, so that only the braking force of the brake spring 76 acts on this winding tube, which ensures that the awning fabric 14 remains taut.
  • the awning fabric also remains taut when the crank rod 26 should be rotated further in the sense of unwinding.
  • the pawl 54 is pressed inward from the edge 67 into the chamber 53 via its inclined surface 61. This process can be repeated at other cutouts of the gear 44.
  • the two gears 43, 44 run in freewheel while the winding tube 34 is held by the brake spring 76.
  • the braking force of the brake spring 76 is selected to be greater than the driving force of the freewheel device acting in the unwinding direction.
  • crank rod 26 is rotated in the opposite direction.
  • the pawl 54 then comes into engagement with the edge 66 or a corresponding other edge with its nose 60, so that the winding tube 34 is carried along.
  • the brake spring 76 is opened so that essentially only the force of the tension spring arranged in the leg 20 has to be overcome.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Building Awnings And Sunshades (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Seal Device For Vehicle (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention relates to a drive for awnings with an awning fabric (14), extension arms (16) which exert sufficient force on the fabric (14) to unroll it, and a roller tube (34) operating together with a braking device in the unrolling direction. The drive (32) is in operative connection with the roller tube (34) via a freewheel device (53, 54, 55) and the braking device exerts a braking force on the roller tube (34) which is greater than the propulsive power of the freewheel device acting in the unrolling direction.

Description

Getriebe für MarkisenGear for awnings
Die Erfindung betrifft ein Getriebe für Markisen nach dem Oberbegriff des Anspruches 1.The invention relates to a transmission for awnings according to the preamble of claim 1.
Ein derartiges Getriebe ist beispielsweise durch die DE-C 1-4014962 bekannt. Die Bremsvorrichtung ist dort durch mindestens eine Bremsfeder in Form einer Schraubenfeder gebildet, die zwischen dem angetriebenen Zahnrad 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.Such a transmission is known for example from DE-C 1-4014962. The braking device is formed there by at least one brake spring in the form of a helical spring which is arranged between the driven gearwheel and a piece which is fixedly connected to the transmission housing and which is held with an angled end in a groove which is fixedly connected to this gearwheel Hub is located, this gearwheel carries 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.
Ein Nachteil dieses bekannten Getriebes besteht jedoch darin, daß beim Weiterbetätigen des Getriebes in Abwickelrichtung in demjenigen Fall, in dem die Abwickelsollstellung des Markisentuchs bereits erreicht ist, weiteres Markisentuchmaterial abgewickelt wird, so daß das Markisentuch nicht mehr straff gespannt ist und der Wind das Markisentuch ballonartig aufblasen und zerreißen kann.A disadvantage of this known transmission, however, is that when the transmission is operated further in the unwinding direction, in the case in which the unwinding set position of the awning fabric has already been reached, further awning fabric material is unwound, so that the awning fabric no longer is taut and the wind can inflate and tear the awning cover like a balloon.
Die Aufgabe der Erfindung besteht daher darin, ein Getriebe der eingangs genannten Art zu schaffen , mit dem das weitere Abwickel n vo n Markisentuchmaterial nach Erreichen der maximalen Ausfahrstellung der Ausfallarme verhindert wird.The object of the invention is therefore to provide a transmission of the type mentioned, with which the further unwinding n of awning fabric is prevented after reaching the maximum extended position of the extension arms.
Die gestellte Aufgabe wird erfindungsgemäß 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 das Auf- und Abwickeln des Markisentuchs mittels einer Vorrichtung erfolgt, die im wesentlichen aus einem Getriebe, einer Freilauf- oder Überhol-Kupplung mit Mitnahmewirkung sowie einer Bremsvorrichtung besteht, die so aufeinander abgestimmt sind, daß beim Abwickeln des Markisentuchs die Ausfallarme mit minimaler Kraft des Benutzers betätigt werden können, und zwar bis zu ihrem Anschlag. Bei weiterem Betätigen der Kurbelstange wird auf das Wickelrohr keine vom Getriebe herrührende Drehkraft mehr ausgeübt. Dies ergibt sich aus der Tatsache, daß die Federkraft der Ausfallarme auf das Markisentuch keine Kraft mehr ausübt, während gleichzeitig die Bremskraft der Bremsvorrichtung größer ist als die Mitnahmekraft des Freilaufs, die zwischen dem Getriebe und dem Freilauf wirkt. Beim Abwickeln wirkt vom Freilauf auf das Wickelrohr eine Drehkraft, die vorzugsweise minimal größer ist als die Differenz zwischen der Kraft der Ausfallarme und der Bremsvorrichtung.It can be seen that the invention is achieved in any case when the awning fabric is wound up and unwound by means of a device which essentially consists of a gear, a freewheel or overrunning clutch with a driving effect and a braking device which are so coordinated with one another that when unrolling the awning cover, the extension arms can be operated with minimal force from the user, up to their stop. If the crank rod is actuated further, no torque from the transmission is exerted on the winding tube. This results from the fact that the spring force of the extension arms no longer exerts any force on the awning fabric, while at the same time the braking force of the braking device is greater than the driving force of the freewheel which acts between the gear and the freewheel. When unwinding, a rotational force acts on the winding tube from the freewheel, which is preferably minimally greater than the difference between the force of the drop arms and the braking device.
Weitere zweckmäßige und vorteilhafte Maßnahmen der Erfindung gehen aus den abhängigen Ansprüchen hervor.Further expedient and advantageous measures of the invention emerge from the dependent claims.
Durch die Maßnahmen des Anspruchs 5 wird erreicht, daß herkömmliche Getriebe ohne Änderung verwendet werden können. Eine einfache Ausgestaltung der Erfindung sieht vor, daß die Freilaufvorrichtung einerseits durch eine Anzahl Ausnehmungen gebildet ist, die auf der der Antriebsseite des angetriebenen Zahnrads gegenüberliegenden Seite in der Nähe des Zahnradumfangs gleichmäßig auf einem Kreisbogen verteilt und unter Bildung mindestens einer radialen Kante angeordnet sind, und andrerseits durch mindestens eine federbelastete Klinke gebildet ist, die in einer Kammer eines mit dem Wickelrohr unverdrehbar verbundenen Adapters achsparallel bewegbar ist und in die Ausnehmungen eingreift.The measures of claim 5 ensure that conventional gears can be used without modification. A simple embodiment of the invention provides that the freewheel device is formed on the one hand by a number of recesses which are evenly distributed on an arc on the side opposite the drive side of the driven gear near the gear circumference and arranged to form at least one radial edge, and on the other hand, is formed by at least one spring-loaded pawl, which can be moved axially parallel in a chamber of an adapter non-rotatably connected to the winding tube and engages in the recesses.
Kostengünstig kann die Freilaufvorrichtung hergestellt werden, wenn nach einer weiteren Ausbildung der Erfindung der Adapter ein Kunststoffspritzteil ist und wenn die ebenfalls aus Kunststoff bestehende Klinke mit einem flexiblen Lappen versehen ist, der am achsnahen Boden der Kammer angespritzt ist.The freewheel device can be produced inexpensively if, according to a further embodiment of the invention, the adapter is a plastic injection-molded part and if the pawl, which is also made of plastic, is provided with a flexible tab which is molded onto the bottom of the chamber near the axis.
Die Haltbarkeit der Freilaufvorrichtung wird dadurch gefördert, daß nach einer weiteren Ausgestaltung der Erfindung der Freilauf der Freilaufvorrichtung dann einsetzt, wenn die Spreizbewegung der Schenkel der Ausfallarme in der Abwickelsollstellung des Markisentuchs durch Anschläge dieser Schenkel begrenzt wird, wobei diese Schenkel noch einen stumpfen Winkel bilden. Da diese Schenkel bei Beginn des Aufwickelvorgangs noch einen stumpfen Winkel bilden, ist die Aufwickelkraft, die auf die Klinken der Freilaufvorrichtung wirkende Kraft viel geringer als in dem Fall, in dem diese Schenkel gestreckt wären.The durability of the freewheel device is promoted in that, according to a further embodiment of the invention, the freewheel of the freewheel device starts when the spreading movement of the legs of the extension arms in the unwinding desired position of the awning fabric is limited by stops of these legs, these legs forming an obtuse angle. Since these legs form an obtuse angle at the beginning of the winding process, the winding force, the force acting on the pawls of the freewheel device is much lower than in the case in which these legs would be stretched.
Der Freilauf kann zum einen die Verbindung zwischen dem Wickeirohr und dem Getriebe herstellen. Zum anderen kann er jedoch auch ein Teil der Kurbelstange bzw. zwischen dem Getriebe und der Kurbelstange geschaltet sein.On the one hand, the freewheel can establish the connection between the winding tube and the transmission. On the other hand, however, it can also be connected to part of the crank rod or between the transmission and the crank rod.
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, Fig. 2 eine Seitenansicht eines Getriebes mit der Freilaufvorrichtung, wobei Getriebe und Freilaufvorrichtung teilweise geschnitten sind,1 part of an awning in a view obliquely from above, 2 shows a side view of a transmission with the freewheel device, the transmission and freewheel device being partially cut,
Fig. 3 eine Rückansicht eines mit dem Wickelrohr unverdrehbar verbundenen Adapters mit einem Teil der Freilaufvorrichtung,3 shows a rear view of an adapter, which is connected to the winding tube in a non-rotatable manner, with a part of the freewheel device,
Fig. 4 eine Seitenansicht der Anordnung in Fig. 3 mit einem geschnittenen Teil der Freilaufvorrichtung,4 shows a side view of the arrangement in FIG. 3 with a cut part of the freewheel device,
Fig. 5 eine Draufsicht auf die Stirnseite A-A der Anordnung in Fig. 3,5 is a plan view of the front side A-A of the arrangement in FIG. 3,
Fig. 6 einen radialen Schnitt längs der Linie C-C in Fig. 3 an der StelleFig. 6 is a radial section along the line C-C in Fig. 3 at the point
X,X,
Fig. 7 eine Rückansicht eines angetriebenen Zahnrads mit einem anderen Teil der Freilaufvorrichtung,7 is a rear view of a driven gear with another part of the freewheel device,
Fig. 8 eine Seitenansicht und einen Teilschnitt des Zahnrads in Fig. 7 längs der Linie B-B undFig. 8 is a side view and a partial section of the gear in Fig. 7 along the line B-B and
Fig. 9 eine Seitenansicht und einen Teilschnitt eines Gegenlagers desFig. 9 is a side view and a partial section of a counter bearing of
Wickelrohrs mit einer Bremsvorrichtung .Winding tube with a braking device.
Die in Fig. 1 dargestellte Markise hat eine an der Hauswand oder dergleichen zu befestigende Trageinrichtung, die mit einem in Lagerplatten 30, 30' (Figuren 1 und 9) drehbar gelagerten Winkelrohr 34 versehen ist. Das Winkelrohr 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 Zugfeder 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 Doppelpfeils 15 bewegbar ist.The awning shown in FIG. 1 has a support device to be fastened to the house wall or the like, which is provided with an angle tube 34 rotatably mounted in bearing plates 30, 30 '(FIGS. 1 and 9). The angled tube 34 can be moved by means of a gear 32, specifically via a crank rod 26 which can be hooked in or 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 drop arm 16 consists of two legs 18, 20 articulated to one another by means of a joint 22, of which the leg 18 is rotatably fastened to a part 36 connected to the supporting shaft by means of a joint 38 and the leg 20 is rotatably fastened to a drop tube 10 which tensiones 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 fastened 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 Getriebe 32 ist näher in Fig. 2 dargestellt. Es besteht aus einem Gehäuse 40 mit zwei Zahnrädern 43, 44, die ein Kegelradpaar bilden. Die Drehachsen der Zahnräder sind rechtwinklig zueinander angeordnet, und die Zähne 42, 49 der Za h n räde r kä mme n mite i na nde r . Das Za h n rad 44 ist a uf e i ne m zylindermantelförmigen Abschnitt 45 des Gehäuses 40 drehbar gelagert.The gear 32 is shown in more detail in FIG. 2. It consists of a housing 40 with two gear wheels 43, 44, which form a bevel gear pair. The axes of rotation of the gears are arranged at right angles to one another, and the teeth 42, 49 of the gears mesh with one another. The toothed wheel 44 is rotatably mounted on a cylindrical section 45 of the housing 40.
Eine Welle 39 des Zahnrads 43 ist mit ihrem Ende 66 im Gehäuse 40 drehbar gelagert. Im Inneren des Abschnitts 45 und in einer zylinderförmigen Aussparung des Gehäuses 40 in Verlängerung des Abschnitts 45 ist ein Zylinderrohr 46 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 Sicherungselements 51 gegen eine horizontale Veschiebung gesichert. Die Art der Befestigung des Wickelrohrs 34 auf dem Adapter 48 geht aus Fig, 3 hervor, die eine Draufsicht auf die offene Seite der Trommel darstellt. Eine nicht dargestellte Rippe im Inneren des Winkelrohrs 34 greift in eine Längsnut 52 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 wabenförmigen und damit stabilen Aufbau.A shaft 39 of the gear 43 is rotatably supported by its end 66 in the housing 40. Inside the section 45 and in a cylindrical recess of the housing 40 in the extension of the section 45, a cylinder tube 46 is arranged centrally and non-rotatably connected to the housing 40. 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 type of fastening of the winding tube 34 on the adapter 48 can be seen in FIG. 3, which represents a plan view of the open side of the drum. A rib, not shown, inside the angle tube 34 engages in a longitudinal groove 52 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 therefore stable structure for reasons of material savings.
Die Kupplung des Zahnrads 44 mit dem Adapter 48 und damit dem Wickelrohr 34 erfolgt nun mit einer Freilaufvorrichtung, die in Fig. 2 durch eine Kammer 53 des Adapters 48, eine in dieser Kammer geführte, federnde Klinke 54 und durch einen im Zahnrad 44 gebildete Ausnehmung 55 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. 2 is represented by a chamber 53 of the adapter 48, a resilient pawl 54 guided in this chamber and by a recess formed in the gearwheel 44 55 is indicated, in which the pawl 54 can engage non-positively.
Diese Freilaufvorrichtung ist näher in den Fig. 3 bis 8 dargestellt, wobei der den Adapter 48 betreffende Teil der Freilaufvorrichtung in den Figuren 3 bis 6 und der das Zahnrad 44 betreffende Teil der Freilaufvorrichtung in den Figuren 7 und 8 gezeigt ist.This freewheel device is shown in more detail in FIGS. 3 to 8, the part of the freewheel device relating to the adapter 48 being shown in FIGS. 3 to 6 and the part of the freewheel device relating to the gear 44 being shown in FIGS. 7 and 8.
Wie aus den Figuren 3 bis 6 hervorgeht, sind im Adapter 48 drei Kammern 53, 56, 57 gebildet, die um jeweils einen Winkel von 120° versetzt sind, einen rechteckförmigen Querschnitt haben, radial verlaufen und die zur Stirnseite (Fig. 5) und zur Rückseite (Fig. 3) des Adapters 48 offen sind. In diesen Kammern ist jeweils eine aus Kunststoff bestehende Klinke 54, 58, 59 federnd geführt, so daß sie in Richtung auf die Stirnseite des Adapters 48 vorgespannt ist. Diese Federvorspannung wird dadurch erreich, daß jede Klinke einen elastischen Lappen 62 aufweist, der mittels eines Steges 63 am achsseitigen Kammerende angespritzt ist (Bezeichnungen nur beispielhaft für die Klinke 54). Die Klinke 54 hat eine Nase 60, die normalerweise aus der Stirnfläche des Adapters 48 herausragt, und eine in peripherer Richtung des Adapters 48 verlaufende Schrägfläche 61 (Fig. 4). Die anderen beiden Klinken 58, 59 sind entsprechend ausgebildet. Dieser Aufbau der Klinke 54 geht auch aus dem Schnittbild in Fig. 6 hervor.As can be seen from FIGS. 3 to 6, three chambers 53, 56, 57 are formed in the adapter 48, which are offset by an angle of 120 ° in each case, have a rectangular cross section, run radially and are directed toward the end face (FIG. 5) and to the back (Fig. 3) of the adapter 48 are open. In these chambers a pawl 54, 58, 59 made of plastic is resiliently guided so that it is biased towards the front of the adapter 48. This spring preload is achieved in that each pawl has an elastic tab 62 which is injection-molded onto the end of the chamber by means of a web 63 (designations only for the pawl 54). The pawl 54 has a nose 60, which normally protrudes from the end face of the adapter 48, and an inclined surface 61 extending in the peripheral direction of the adapter 48 (FIG. 4). The other two pawls 58, 59 are designed accordingly. This structure of the pawl 54 is also apparent from the sectional view in FIG. 6.
Wie die Figuren 7 und 8 zeigen, ist die der Stirnseite des Adapters 48 gegenüberliegende Seite des Zahnrads 34 mit sechs, in der Nähe des Zahnradumfangs gleichmäßig auf einem Kreisbogen verteilten Aussparungen versehen, wobei für die nähere Betrachtung die Aussparung 55 beispielhaft herausgegriffen sei. Die Aussparung 55 wird durch eine obere, in der Nähe des Zahnradumfangs liegende, bogenförmige Kante 64, eine untere, bogenförmige Kante 65 und zwei seitliche, radial verlaufende Kanten 66, 67 begrenzt. Die Bodenfläche der Ausnehmung 55 verläuft parallel zur radialen Außenseite des Zahnrads 44. Sie kann jedoch auch von der Kante 66 aus bis zur Kante 67 ansteigend verlaufen. Die Ausnehmung 55 ist so bemessen, daß die Klinke 54 in ihr aufgenommen werden kann, wobei die Nase 60 an der Kante 66 anschlagen kann.As FIGS. 7 and 8 show, the side of the gearwheel 34 opposite the end face of the adapter 48 is provided with six recesses, which are evenly distributed on a circular arc in the vicinity of the gearwheel circumference, the recess 55 being selected by way of example for closer inspection. The recess 55 is delimited by an upper, arcuate edge 64 lying in the vicinity of the gear wheel periphery, a lower, arcuate edge 65 and two lateral, radially running edges 66, 67. The bottom surface of the recess 55 runs parallel to the radial outside of the gear 44. However, it can also rise from the edge 66 to the edge 67. The recess 55 is dimensioned so that the pawl 54 can be received in it, the nose 60 can strike the edge 66.
Die Wirkungsweise der Freilaufvorrichtung wird später erläutert. Zunächst wird noch eine für das Wickelrohr 34 vorgesehene Bremsvorrichtung beschrieben, die sich am anderen Wickelrohrende, das entgegengesetzt zu dem in Fig. 2 gezeigten Wickelrohrende liegt, befindet und die in Fig. 9 gezeigt ist.The operation of the freewheel device will be explained later. First, a braking device provided for the winding tube 34 will be described, which is located on the other end of the winding tube, which is opposite to the end of the winding tube shown in FIG. 2, and which is shown in FIG. 9.
Die Fig. 9 ist gegenüber der Fig. 2 in verkleinertem Maßstab gezeigt. Das Gegenlager des Wickelrohrs 34 besteht aus einem versteiften Topf 70, der mit einer zentrischen Öffnung 71 auf einem Zapfen 72 drehbar gelagert ist. Am Umfang des Topfes 70 sind achsparallele Rippen 73 gleichmäßig verteilt, die in dazu passende, achsparallele Nuten 74 am Innenumfang des Wickelrohrs 34 eingreifen, so daß der Topf 70 mit dem Wickelrohr 34 unverdrehbar verbunden ist. Der Zapfen 72 ist in einem Loch in der Lagerplatte 30' unverdrehbar befestigt. Dazu weist die Lagerplatte 30' einen nicht gezeigten, oberhalb des Zapfens 72 vertikal verlaufenden Schlitz auf, der mittels einer Schraube 75 verengt werden kann, so daß der Zapfen 72 festgeklemmt werden kann. Auf dem inneren Ende des Zapfens 72 ist eine Bremsfeder 76 in Form einer etwa zweigängigen Schraubenfeder angeordnet, die sich dicht an den Zapfen 72 anschmiegt und die mit einem rechtwinklig abgebogenen Ende 77 in einer radialen Innennut des Topfes 70 festgelegt ist. Der Topf 70 und die Bremsfeder 76 sind auf dem Zapfen mittels einer Scheibe 78 und eines Sicherungselements 79 gegen eine horizontale Verschiebung gesichert. Der Wickelsinn der Bremsfeder 76 ist so gerichtet, daß beim Abwickeln des Markisentuchs 14, ( Fig. 1 ) der Querschnitt der Bremsfeder 76 verringert wird, so daß dabei eine gewisse Bremswirkung auf das Wickelrohr 34 ausgeübt wird, und beim Aufwickeln des Markisentuchs der Querschnitt der Bremsfeder 76 vergrößert wird, so daß dabei das Wickelrohr 34 im wesentlichen frei läuft.FIG. 9 is shown on a smaller scale than FIG. 2. The counter bearing of the winding tube 34 consists of a stiffened pot 70 which is rotatably mounted on a pin 72 with a central opening 71. On the circumference of the pot 70, axially parallel ribs 73 are evenly distributed, which engage in matching, axially parallel grooves 74 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 72 is fixed non-rotatably in a hole in the bearing plate 30 '. For this purpose, the bearing plate 30 'has a slot, not shown, which runs vertically above the pin 72 and which can be narrowed by means of a screw 75, so that the pin 72 can be clamped in place. On the inner end of the pin 72, a brake spring 76 is arranged in the form of an approximately two-start helical spring which nestles tightly against the pin 72 and which is fixed with a right-angled end 77 in a radial inner groove of the pot 70. The pot 70 and the brake spring 76 are secured on the journal by means of a disk 78 and a securing element 79 against horizontal displacement. The winding direction of the brake spring 76 is directed so that when unrolling the awning fabric 14, (Fig. 1) the cross section of the brake spring 76 is reduced, so that a certain braking effect is exerted on the winding tube 34, and when winding the awning fabric the cross section of Brake spring 76 is enlarged so that the winding tube 34 runs essentially freely.
Die Wirkungsweise der Freilaufvorrichtung in Verbindung mit der Bremsvorrichtung 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 60 (Fig. 4) der Klinke 54 mit der Kante 66 (Fig. 7) im Eingriff. Für die beiden anderen Klinken 58, 59 gilt das gleiche; die folgende Betrachtung bezieht sich beispielhaft nur auf die Klinke 54. Auf die Kurbel braucht kein Druck ausgeübt zu werden, da die Zugkraft der im Schenkel 20 angeordneten Feder ausreicht, das Markisentuch 14 gegen die Bremskraft der Bremsfeder 76 (Fig. 9) und die Getriebereibungskräfte abzuwickeln. Ist die Abwickelsollstellung des Markisentuchs 14 erreicht, begrenzt ein nicht dargestellter Anschlag am Gelenk 22 (Fig. 1) die weitere Spreizbewegung der Schenkel 18, 20. Die Schenkel 18, 20 bilden in dieser Abwickelsollstellung des Markisentuchs 14 keine gerade Linie, sondern noch einen stumpfen Winkel, der es ermöglicht, mit bestimmter Kraft die Abwickelbewegung des Markisentuchs 14 einzuleiten. Beim Erreichen der Abwickelsollstellung des Markisentuchs 14 fällt die zuvor auf den Umfang des Wickelrohrs 34 ausgeübte Zugkraft fort, so daß auf dieses Wickelrohr nur noch die Bremskraft der Bremsfeder 76 wirkt, die dafür sorgt, daß das Markisentuch 14 straff gespannt bleibt. Das Markisentuch bleibt auch straff gespannt, wenn die Kurbelstange 26 im Sinne des Abwickeins weitergedreht werden sollte. Die Klinke 54 gerät mit ihrer Nase 60 in diesem Fall außer Eingriff mit der Kante 66 und lehnt sich mit ihrer Schrägfläche 61 (Fig. 4) an die Kante 67 (Fig. 7) an, die eine geringe Mitnahmekraft auf die Klinke 54 und damit auf Adapter und Winkelrohr ausübt. Nach Überwindung dieser Mitnahmekraft wird die Klinke 54 über ihre Schrägfläche 61 von der Kante 67 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 Bremsfeder 76 festgehalten wird. Dabei ist die Bremskraft der Bremsfeder 76 größer gewählt als die in Abwickelrichtung wirkende Mitnahmekraft der Freilaufvorrichtung.The operation of the freewheel device in conjunction with the braking 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 60 (FIG. 4) of the pawl 54 engages with the edge 66 (FIG. 7). The same applies to the other two pawls 58, 59; the following consideration refers only to the pawl 54 by way of example. No pressure need be exerted on the crank, since the tensile force of the spring arranged in the leg 20 is sufficient, the awning fabric 14 against the braking force of the brake spring 76 (FIG. 9) and the transmission friction forces to handle. Once the unwinding set position of the awning fabric 14 has been reached, a stop (not shown) on the joint 22 (FIG. 1) limits the further spreading movement of the legs 18, 20. The legs 18, 20 do not form a straight line in this unwinding set position of the awning fabric 14, but rather an obtuse line Angle that makes it possible to initiate the unwinding movement of the awning fabric 14 with a certain force. When reaching the unwinding set position of the awning fabric 14, the tensile force previously exerted on the circumference of the winding tube 34 is eliminated, so that only the braking force of the brake spring 76 acts on this winding tube, which ensures that the awning fabric 14 remains taut. The awning fabric also remains taut when the crank rod 26 should be rotated further in the sense of unwinding. The handle In this case, 54 comes out of engagement with the edge 66 with its nose 60 and leans with its inclined surface 61 (FIG. 4) against the edge 67 (FIG. 7), which has a low driving force on the pawl 54 and thus on the adapter and exerts angle tube. After overcoming this entraining force, the pawl 54 is pressed inward from the edge 67 into the chamber 53 via its inclined surface 61. This process can be repeated at other cutouts of the gear 44. Thus, the two gears 43, 44 run in freewheel while the winding tube 34 is held by the brake spring 76. The braking force of the brake spring 76 is selected to be greater than the driving force of the freewheel device acting in the unwinding direction.
Beim Aufwickelvorgang wird die Kurbelstange 26 in Gegenrichtung gedreht. Dabei gerät die Klinke 54 mit ihrer Nase 60 wieder in den Eingriff mit der Kante 66 oder einer entsprechenden anderen Kante, so daß das Wickelrohr 34 mitgenommen wird. Dabei wird die Bremsfeder 76 geöffnet, so daß im wesentlichen nur die Kraft der im Schenkel 20 angeordneten Zugfeder überwunden werden muß.During the winding process, the crank rod 26 is rotated in the opposite direction. The pawl 54 then comes into engagement with the edge 66 or a corresponding other edge with its nose 60, so that the winding tube 34 is carried along. The brake spring 76 is opened so that essentially only the force of the tension spring arranged in the leg 20 has to be overcome.
Abweichend von dem in den Figuren dargestellten Ausführungsbeispiel ist es auch möglich, die Bremsvorrichtung mit der Bremsfeder 76 auf dem Innenende des Zylinderrohrs 46 (Fig. 2) vorzusehen, wobei das abgewickelte Ende der Bremsfeder 76 durch den Adapter 48 festgehalten wird. Deviating from the exemplary embodiment shown in the figures, it is also possible to provide the brake device with the brake spring 76 on the inner end of the cylinder tube 46 (FIG. 2), the unwound end of the brake spring 76 being held in place by the adapter 48.

Claims

A n s p r ü c h e Expectations
1. Getriebe für Markise mit einem Markiseπtuch mit Ausfallarmen, die eine zur Abwicklung ausreichende Kraft auf das Markisentuch ausüben, sowie einem Wickelrohr, das in Abwickelrichtung mit einer Bremsvorrichtung zusammenarbeitet, dadurch gekennzeichnet, daß das mit dem Wickelrohr (34) zusammenarbeitende Getriebe (32) mit einer Freilaufvorrichtung (53, 54, 55) in Wirkverbindung steht und daß die Bremsvorrichtung (76) eine Bremskraft auf das Wickelrohr (43) ausübt, die größer als die in Abwickelrichtung wirkende Mitnahmekraft der Freilaufvorrichtung ist.1. Gear for awning with an awning fabric with drop arms that exert sufficient force on the awning fabric to unwind, and a winding tube that works in the unwinding direction with a braking device, characterized in that the gear (32) cooperating with the winding tube (34) is in operative connection with a freewheel device (53, 54, 55) and that the braking device (76) exerts a braking force on the winding tube (43) which is greater than the driving force of the freewheel device acting in the unwinding direction.
2. Getriebe nach Anspruch 1 , dadurch gekennzeichnet, daß die Freilaufvorrichtung (53, 54, 55) als Freilauf- oder Überhol-Kupplung ausgebildet ist.2. Transmission according to claim 1, characterized in that the freewheel device (53, 54, 55) is designed as a freewheel or overrunning clutch.
3. Getriebe nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Freilaufvorrichtung (53, 54, 55) eine Verbindung zwischen dem Wickelrohr (34) und dem Getriebe (32) herstellt.3. Gear according to claim 1 or 2, characterized in that the freewheel device (53, 54, 55) creates a connection between the winding tube (34) and the gear (32).
4. Getriebe nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Freilaufvorrichtung ein Teil des Getriebes ist und mit der Antriebswelle in Wirkverbindung steht. 4. Transmission according to claim 1 or 2, characterized in that the freewheel device is part of the transmission and is operatively connected to the drive shaft.
5. Getriebe nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Freilaufvorrichtung Teil einer Kurbeistange ist.5. Transmission according to claim 1 or 2, characterized in that the freewheel device is part of a crank rod.
6. Getriebe nach einem der Ansprüche 1 bis 3 mit einem Kegelzahnradpaar, dadurch gekennzeichnet, daß die Freilaufvorrichtung einerseits durch eine Anzahl Ausnehmungen (55) gebildet ist, die auf der der Antriebsseite des angetriebenen Zahnrads (44) gegenüberliegenden Seite (Fig. 7) in der Nähe des Zahnradumfangs gleichmäßig auf einem Kreisbogen verteilt und unter Bildung mindestens einer radialen Kante (66) angeordnet sind, und andrerseits durch mindestens eine federbelastete Klinke (54) gebildet ist, die in einer Kammer (53) eines mit dem Wickelrohr (34) unverdrehbar verbundenen Adapters (48) achsparallel bewegbar ist und in die Ausnehmungen (55) eingreift.6. Transmission according to one of claims 1 to 3 with a bevel gear pair, characterized in that the freewheel device is formed on the one hand by a number of recesses (55) on the opposite side of the drive side of the driven gear (44) (Fig. 7) in are evenly distributed on a circular arc near the circumference of the gear and are arranged to form at least one radial edge (66), and on the other hand are formed by at least one spring-loaded pawl (54) which is non-rotatable in a chamber (53) with the winding tube (34) connected adapter (48) is axially parallel movable and engages in the recesses (55).
7. Getriebe nach Anspruch 6, dadurch gekennzeichnet, daß die Ausnehmung (55) eine zweite radiale Kante (67) bildet und daß die Klinke (54) mit einer von ihrer Nase (60) ausgehenden Schrägfläche (61 ) versehen ist.7. Gearbox according to claim 6, characterized in that the recess (55) forms a second radial edge (67) and that the pawl (54) with an emanating surface (61) extending from its nose (60) is provided.
8. Getriebe nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß sechs Ausnehmungen (55) vorgesehen sind.8. Transmission according to claim 6 or 7, characterized in that six recesses (55) are provided.
9. Getriebe nach einem der Ansprüche 6 bis 8, dadurch gekennzeichnet, daß drei Klinken (55, 58, 59) vorgesehen sind, die jeweils in einer eigenen Kammer (55, 56, 57) des Adapters (48) geführt sind, wobei diese Kammern in Zahnradumfangsrichtung gleichmäßig verteilt sind. 9. Transmission according to one of claims 6 to 8, characterized in that three pawls (55, 58, 59) are provided, each of which is guided in a separate chamber (55, 56, 57) of the adapter (48), these Chambers in the gear circumference direction are evenly distributed.
10. Getriebe nach einem der Ansprüche 6 bis 9, dadurch gekennzeichnet, daß der Adapter ein Kunststoffspritzteil ist und daß die ebenfalls aus Kunststoff bestehende Klinke (54) mit einem flexiblem Lappen (62) versehen ist, der am achsnahen Boden der Kammer (53) angespritzt ist (Steg 63).10. Transmission according to one of claims 6 to 9, characterized in that the adapter is a plastic injection-molded part and that the pawl (54), which is also made of plastic, is provided with a flexible tab (62) which is on the bottom of the chamber (53) near the axis. is molded (web 63).
11. Getriebe nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß die Bremsvorrichtung eine Bremsfeder aufweist, die auf das Wickelrohr (34) In Abwickelrichtung Bremskraft ausübt, während sie es in Aufwickelrichtung freigibt.11. Transmission according to one of claims 1 to 10, characterized in that the braking device has a brake spring which exerts braking force on the winding tube (34) in the unwinding direction while it releases it in the winding direction.
12. Getriebe nach einem der Ansprüche 6 bis 11 , dadurch gekennzeichnet, daß die Bremsvorrichtung durch eine Bremsfeder in Form einer Schraubenfeder gebildet ist, die um einen zapfenförmigen und mit Lagerplatten (30, 30') der Markise fest verbundenen Teil gewunden ist und mit einem Ende in Halteverbindung mit dem Wickelrohr (34) steht.12. Transmission according to one of claims 6 to 11, characterized in that the braking device is formed by a brake spring in the form of a helical spring which is wound around a pin-shaped part with bearing plates (30, 30 ') of the awning and with one The end is in holding connection with the winding tube (34).
13. Getriebe nach Anspruch 12, dadurch gekennzeichnet, daß das Teil ein Zγlinderrohr (46) ist, auf dem das angetriebene Zahnrad (44) gelagert ist.13. Transmission according to claim 12, characterized in that the part is a Zγlinderrohr (46) on which the driven gear (44) is mounted.
14. Getriebe nach Anspruch 12, dadurch gekennzeichnet, daß das Teil ein Zapfen (72) ist, der Teil des Gegenlagers (Fig. 9) des Wickelrohrs (34) ist. 14. Transmission according to claim 12, characterized in that the part is a pin (72) which is part of the counter bearing (Fig. 9) of the winding tube (34).
15. Getriebe nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, daß der Freilauf der Freilaufvorrichtung (53, 54, 55) dann einsetzt, wenn die Spreizbewegung der Schenkel (18, 20) der Ausfallarme (16) in der Abwickelsollstellung des Markisentuchs (14) durch Anschläge dieser Schenkel begrenzt wird, wobei diese Schenkel noch einen stumpfen Winkel bilden. 15. Transmission according to one of claims 1 to 14, characterized in that the freewheeling of the freewheel device (53, 54, 55) starts when the spreading movement of the legs (18, 20) of the extension arms (16) in the unwinding set position of the awning fabric ( 14) is limited by stops of these legs, these legs still forming an obtuse angle.
EP96907346A 1995-09-28 1996-03-05 Awning Expired - Lifetime EP0795065B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19536135A DE19536135A1 (en) 1995-09-28 1995-09-28 Gear for awning
DE19536135 1995-09-28
PCT/EP1996/000912 WO1997012104A1 (en) 1995-09-28 1996-03-05 Awning drive

Publications (2)

Publication Number Publication Date
EP0795065A1 true EP0795065A1 (en) 1997-09-17
EP0795065B1 EP0795065B1 (en) 2002-07-03

Family

ID=7773454

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96907346A Expired - Lifetime EP0795065B1 (en) 1995-09-28 1996-03-05 Awning

Country Status (6)

Country Link
EP (1) EP0795065B1 (en)
AT (1) ATE220164T1 (en)
AU (1) AU5101496A (en)
DE (2) DE19536135A1 (en)
ES (1) ES2176444T3 (en)
WO (1) WO1997012104A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10122101A1 (en) * 2001-05-07 2002-11-14 Christian Born Device for extending and retracting an awning includes a brake engaging on the material shaft and formed by a speed limiter to restrict unrolling speed of shaft
ITMI20081081A1 (en) 2008-06-16 2009-12-17 Cherubini Spa LIFTING WINCH FOR VENETIAN SHUTTERS AWNINGS OR SIMILAR ITEMS WITH REMOVABLE SHELL
DE102013108386A1 (en) 2013-08-05 2015-02-05 Gerhard Geiger GmbH & Co. KG Windlass for awnings, shutters, blinds and the like.
DE202016107325U1 (en) 2016-12-23 2017-01-24 VANA Deutschland GmbH Manually actuable drive unit for an awning and awning with such a drive unit

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1979845U (en) * 1967-11-22 1968-02-29 Hans Dieter Hertel AWNING.
DE2823134C3 (en) * 1978-05-26 1980-11-13 Klafft & Klueppelholz, 5628 Heiligenhaus Gear for roller shutters and awnings
EP0246338A1 (en) * 1986-05-17 1987-11-25 Carlo Maurizio Pozzi Limit stop device for the opening of sun curtains
DE4014962C1 (en) * 1990-05-10 1991-07-11 Gerhard Geiger Gmbh & Co. Kg, 7120 Bietigheim-Bissingen, De Drive for awning reel - has bevel gear pair with driven gear coupled to reel shaft

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9712104A1 *

Also Published As

Publication number Publication date
EP0795065B1 (en) 2002-07-03
DE59609403D1 (en) 2002-08-08
ATE220164T1 (en) 2002-07-15
ES2176444T3 (en) 2002-12-01
DE19536135A1 (en) 1997-04-03
WO1997012104A1 (en) 1997-04-03
AU5101496A (en) 1997-04-17

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