EP0503161B1 - Arbre d'enroulement avec accouplement à glissement - Google Patents

Arbre d'enroulement avec accouplement à glissement Download PDF

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Publication number
EP0503161B1
EP0503161B1 EP91122350A EP91122350A EP0503161B1 EP 0503161 B1 EP0503161 B1 EP 0503161B1 EP 91122350 A EP91122350 A EP 91122350A EP 91122350 A EP91122350 A EP 91122350A EP 0503161 B1 EP0503161 B1 EP 0503161B1
Authority
EP
European Patent Office
Prior art keywords
roller blind
spring
blind according
slip clutch
internal geared
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP91122350A
Other languages
German (de)
English (en)
Other versions
EP0503161A3 (en
EP0503161A2 (fr
Inventor
Ulrik Ulriksen
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.)
VKR Holding AS
Velux Industri AS
Original Assignee
VKR Holding AS
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 VKR Holding AS filed Critical VKR Holding AS
Publication of EP0503161A2 publication Critical patent/EP0503161A2/fr
Publication of EP0503161A3 publication Critical patent/EP0503161A3/de
Application granted granted Critical
Publication of EP0503161B1 publication Critical patent/EP0503161B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/80—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling
    • E06B9/82—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic
    • E06B9/88—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic for limiting unrolling
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/68—Operating devices or mechanisms, e.g. with electric drive
    • E06B9/70—Operating devices or mechanisms, e.g. with electric drive comprising an electric motor positioned outside 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
    • E06B9/80—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/80—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
    • 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
    • E06B9/92—Means allowing the closures to be shifted out of the plane of the opening

Definitions

  • the invention relates to a roller shutter, in particular for skylights, with a winding shaft, preferably arranged at the top, which is designed to be driven by a motor via a slip clutch, the slip clutch having release torques which are designed to act differently for both directions of rotation.
  • Window shutters are increasingly driven by a motor to enable remote control or automatic control of the opening and closing process.
  • automatic closing of the roller shutters controlled by suitable sensors is often necessary in order to prevent the interior from being excessively heated when exposed to sunlight.
  • the electric drives are arranged on the winding shaft, which is usually arranged at the top.
  • roller shutter drives for winding with slip clutches. This protects the electric motor from overloads that occur, for example, when the shutter slats are frozen in the closed state.
  • a torque limiting clutch which disengages depending on the direction of rotation with two different torque sizes.
  • Two grooves are used for coupling, in which two springs are provided for snapping into place. Each groove has two flanks, one against each of which the springs come to rest when the clutch is turned.
  • the springs are Z-shaped leaf springs. These feathers are with both of them Inner edges pivotally mounted on the outside in a turned part. The two outer edges of the spring are intended to snap into the grooves.
  • a support is used to support the springs, which guides the springs on both sides in the middle section.
  • the overload protection device has two disc-shaped coupling members which are located coaxially under spring force and have frontal toothing.
  • the toothing can have uneven tooth flank angles so that torques of different sizes can be transmitted depending on the direction of rotation.
  • the noise and wear can be kept extremely low with an asymmetrical number division.
  • the invention was based on the object of specifying a roller shutter of the type mentioned at the outset, in which a slip clutch acting to different degrees in both directions of rotation is realized in a structurally particularly simple manner.
  • the slipping clutch consists of two partial clutches, each part having a release torque only in one direction of rotation and the coupled parts being constructed in a rotationally fixed connection in the opposite direction.
  • the slip clutch has release torques which are designed differently for both directions of rotation, it can be taken into account that the drive torques required for closing or opening the roller shutter are different.
  • the roller shutter When the roller shutter is closed, the rotational movement of the winding shaft is supported by the weight of the unwound roller shutter slats.
  • the slip clutch consists of two partial clutches, each part having a release torque only in one third direction and the coupled parts being non-rotatably connected in the opposite direction, the release torque for each direction of rotation can be set independently of one another to adjust. Adaptation to different installation conditions, for example different roof pitches, can be carried out easily and quickly on the two partial couplings.
  • the slip clutch is arranged within the winding shaft, preferably in connection with a raw motor, an advantageously small-sized roller shutter results.
  • the roller shutter box can be made extremely slim.
  • roller shutter it is provided that several, in particular four, spring tongues are arranged so as to engage in the teeth of the gearwheel. This further improves the functional reliability of the slip clutch. Furthermore, a compensation of the radial forces acting between the spring tongue and the rest wheel is achieved, so that decentration does not occur.
  • the spring tongue is inexpensively designed as a sheet metal strip.
  • a molded sliding profile supports the function as a bending or buckling bar.
  • Spring tongues arranged symmetrically to one another compensate for the radial forces generated by the spring tongues.
  • the desired release torques can be generated by spring tongues from sheet metal strips of different thicknesses.
  • the free bending length of the spring tongues corresponds approximately to 0.7 times the pitch circle radius of the ring gear, mutual interference between the spring tongues is avoided in the event of buckling and bending loads, and at the same time sufficient mobility of the spring tongues is ensured.
  • the spring tongue has a tangential direction to an intended concentric circle around the spring element with a radius of about 0.7 times the pitch circle, the spring tongue is held in a prestressed position from which it is only slightly compressed when subjected to buckling until the spring tongue partially abuts the internal toothing of the ring gear and a rotationally fixed connection is established.
  • the spring tongue has a clamping point which is approximately on an imaginary semicircle above the pitch circle radius of the Ring gear is arranged at the point of engagement of the spring tongue in the toothing of the ring gear. So that the clamping point of the spring tongue with respect to the point of engagement of the free spring tongue end is aligned so that a positive connection with a particularly high holding torque is created when the spring tongue is loaded.
  • FIG. 1 shows a winding shaft 2 which is arranged on an end cover 1 of a roller shutter box and can be driven by a tubular motor 3 fastened to the end cover 1 by screws 4.
  • the first spring element 6 On a motor shaft 5, a first spring element 6 shown in Figures 2 and 3 is rotatably connected.
  • the first spring element 6 has a plate-shaped base body 7 and thereon a spring tongue 9 held in the holder 8.
  • the first spring element 6 is arranged centrally in a first ring gear 11 of a transmission element 10.
  • the spring tongues 9 engage non-rotatably or, depending on the load, engage in an internal toothing 12 of the first ring gear 11 depending on the load.
  • the transmission element 10 is freely rotatable in a bore 13 on the motor shaft 5.
  • the transmission element 10 consists of the first ring gear 11 and a second spring element 14 with holders 15 and spring tongues 16 held therein, as shown in FIGS. 4, 5 and 6.
  • the spring tongues 16 are oriented opposite to the spring tongues 9 of the first spring element 6.
  • the second spring element 14 is in turn arranged concentrically in a second ring gear 17 shown in FIGS. 7 and 8.
  • the second ring gear 17 has an internal toothing 18 and a nose 21 formed on the outer circumference.
  • the second ring gear 17 is in a concentric bore 19 on the motor shaft 5 mounted non-rotatably, a nut 20 screwed onto the outer end of the motor shaft 5 holding the partial couplings together.
  • the two spring elements 6, 14 each have four spring tongues 9, 16 distributed symmetrically in the holders 8, 15.
  • the spring tongues 9, 16 are fastened to the holders 8, 15 at clamping points 23.
  • the spring tongues 9, 16 consist of 0.2-0.5 mm thick sheet steel strips, at the ends of which a semi-arc-shaped slide-on profile 24 is formed. This slide-on profile 24 engages in the internal toothing 12, 18 of the associated ring gears 11, 17.
  • the rotational movement transmitted to the transmission element 10 is transmitted to the second ring gear 17 by means of a second spring element 14.
  • the spring tongues 16 of the second spring element 14 engage in the internal toothing 18 of the second ring gear 17.
  • the spring tongues 16, which are oriented opposite to the spring tongues 9 of the first spring element 6, thus also effect a load-dependent coupling of the second direction of rotation, wherein different release moments can be preselected by different design of the spring tongues 9 or 16.
  • the rotational movement of the second ring gear 17 is transmitted via the nose 21, which engages in a groove 22 in the winding shaft 2, to the winding shaft 2 in the roller shutter box. The winding shaft 2 rolls up and down the roller shutters.
  • the coupling can also be provided particularly advantageously manually, for example by means of a crank, moving roller shutters. This prevents damage caused by incorrect operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Blinds (AREA)
  • Mechanical Operated Clutches (AREA)
  • One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
  • Pulleys (AREA)
  • Friction Gearing (AREA)
  • Ticket-Dispensing Machines (AREA)
  • Catching Or Destruction (AREA)
  • Harvester Elements (AREA)

Claims (11)

  1. Volet roulant, notamment pour lucarne, comportant un arbre d'enroulement (2), de préférence monté en partie supérieure, cet arbre étant entraîné à partir d'un moteur (3) par l'intermédiaire d'un accouplement à glissement, cet accouplement à glissement ayant un couple de libération agissant avec une intensité différente dans les deux sens de rotation, caractérisé en ce que l'accouplement à glissement est constitué de deux parties ayant chacune un couple de libération que pour un sens de rotation, les deux parties étant reliées solidairement en rotation pour le sens de rotation opposé.
  2. Volet roulant selon la revendication 1, caractérisé en ce que l'accouplement à glissement est monté dans l'arbre d'enroulement (2), de préférence en combinaison avec un moteur tubulaire (3).
  3. Volet roulant selon la revendication 1 ou 2, caractérisé en ce que l'embrayage à glissement présente une roue dentée réalisée de préférence sous forme de roue creuse (11, 17), une languette élastique (9, 16) venant prendre dans les dents, cette languette formant une tige de flexion pour un sens de rotation et une tige pliante dans la direction opposée.
  4. Volet roulant selon la revendication 3, caractérisé en ce que plusieurs languettes élastiques (9, 16), notamment quatre languettes, sont montées de façon à prendre dans les dents de la roue dentée.
  5. Volet roulant selon la revendication 3 ou 4, caractérisé en ce qu'à chaque partie de l'accouplement est associée une roue dentée en forme de roue creuse et un élément à ressort monté au centre de la roue dentée, une roue creuse (17) étant montée solidairement en rotation avec l'arbre d'enroulement (2) et un élément à ressort (3) étant solidaire en rotation de l'arbre moteur (5) et l'autre élément à ressort (14) et la roue creuse (11) sont reliées solidairement en rotation.
  6. Volet roulant selon les revendication 3, 4 ou 5, caractérisé en ce que les languettes à ressort (9, 16) sont des bandes de tôle dans lesquelles est réalisé de préférence un profilé d'attaque, réalisé dans la forme.
  7. Volet roulant selon les revendications 3, 4, 5 ou 6, caractérisé en ce que les languettes élastiques (9, 16) sont montées de manière symétrique.
  8. Volet roulant selon les revendications 3, 4, 5, 6 ou 7, caractérisé en ce que les languettes élastiques (9, 16) sont formées à partir de bandes de tôle d'épaisseurs différentes en fonction de leur couple de libération.
  9. Volet roulant selon les revendications 3, 4, 5, 6, 7 ou 8, caractérisé en ce que la languette élastique (9, 16) a une longueur de flexion libre comprise entre la moitié et l'entier rayon du cercle primitif, notamment environ à 0,7 fois le rayon du cercle primitif de la roue creuse (11, 17).
  10. Volet roulant selon les revendications 3, 4, 5, 6, 7, 8 ou 9, caractérisé en ce que les languettes élastiques (9, 16) ont une direction tangentielle par rapport à un cercle fictif concentrique à l'élément à ressort (6, 14), cercle dont le rayon correspond sensiblement à 0,7 fois celui du cercle primitif.
  11. Volet roulant selon les revendications 3, 4, 5, 6, 7, 8, 9 ou 10, caractérisé en ce que la languette élastique (9, 16) présente un point de fixation (23) qui se situe sensiblement sur un demi-cercle imaginaire sur le rayon du cercle primitif de la roue creuse (11, 17), au point d'attaque de la languette élastique dans la denture de la roue creuse.
EP91122350A 1991-03-09 1992-01-01 Arbre d'enroulement avec accouplement à glissement Expired - Lifetime EP0503161B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4107611 1991-03-09
DE4107611A DE4107611A1 (de) 1991-03-09 1991-03-09 Wickelwelle mit rutschkupplung

Publications (3)

Publication Number Publication Date
EP0503161A2 EP0503161A2 (fr) 1992-09-16
EP0503161A3 EP0503161A3 (en) 1993-04-14
EP0503161B1 true EP0503161B1 (fr) 1995-07-19

Family

ID=6426882

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91122350A Expired - Lifetime EP0503161B1 (fr) 1991-03-09 1992-01-01 Arbre d'enroulement avec accouplement à glissement

Country Status (5)

Country Link
EP (1) EP0503161B1 (fr)
JP (1) JPH0565785A (fr)
AT (1) ATE125330T1 (fr)
DE (2) DE4107611A1 (fr)
ES (1) ES2075319T3 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19519440A1 (de) * 1995-05-26 1996-11-28 Theodor Kuhlmann Rolladen für Fenster und Fenstertüren
FR2785274B1 (fr) * 1998-11-02 2000-12-29 Fermetures Henri Peyrichou Dispositif d'arret automatique de la manoeuvre d'un element enroulable motorise
KR100522357B1 (ko) 2003-09-26 2005-11-09 주식회사 윈스피아 내장형 전동 블라인드 장치
AT503139B1 (de) * 2006-02-08 2009-02-15 Blum Gmbh Julius Ausstosser mit rutschkupplung
EP2085564A3 (fr) 2008-01-30 2013-05-15 Gerhard Geiger GmbH & Co. Dispositif d'entraînement doté d'un accouplement à patinage ou d'un frein

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7809535U1 (de) * 1978-03-31 1978-09-21 Emil Und Adolf Becker Kg, 6349 Sinn Antriebswelle fuer einen rolladen, eine markise o.dgl.
CH662868A5 (en) * 1982-05-10 1987-10-30 Baumann Rolladen Torque-limiting coupling
CH662859A5 (en) * 1984-03-21 1987-10-30 Griesser Ag Overload safety device for a roller shutter, blind or awning drive
DE8412842U1 (de) * 1984-04-26 1984-07-19 Baier, Paul, 7592 Renchen Rolladen fuer dachfenster

Also Published As

Publication number Publication date
ATE125330T1 (de) 1995-08-15
DE4107611A1 (de) 1992-09-17
DE4107611C2 (fr) 1993-06-03
EP0503161A3 (en) 1993-04-14
ES2075319T3 (es) 1995-10-01
DE59202890D1 (de) 1995-08-24
EP0503161A2 (fr) 1992-09-16
JPH0565785A (ja) 1993-03-19

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