EP0474134A1 - Mécanisme latéral pour l'entraînement d'un store enroulable - Google Patents

Mécanisme latéral pour l'entraînement d'un store enroulable Download PDF

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Publication number
EP0474134A1
EP0474134A1 EP91114639A EP91114639A EP0474134A1 EP 0474134 A1 EP0474134 A1 EP 0474134A1 EP 91114639 A EP91114639 A EP 91114639A EP 91114639 A EP91114639 A EP 91114639A EP 0474134 A1 EP0474134 A1 EP 0474134A1
Authority
EP
European Patent Office
Prior art keywords
freewheel
winding shaft
brake
pull mechanism
friction brake
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
EP91114639A
Other languages
German (de)
English (en)
Other versions
EP0474134B1 (fr
Inventor
Hans Rink
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.)
OSKAR WIDMER Firma
Original Assignee
OSKAR WIDMER Firma
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 OSKAR WIDMER Firma filed Critical OSKAR WIDMER Firma
Publication of EP0474134A1 publication Critical patent/EP0474134A1/fr
Application granted granted Critical
Publication of EP0474134B1 publication Critical patent/EP0474134B1/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
    • E06B9/90—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic for immobilising the closure member in various chosen positions

Definitions

  • the invention relates to a side pull mechanism for the winding shaft of roller blinds, which is rotatably mounted on the side to be actuated by the mechanics on a pivot pin, which is in turn rotatably held in a mounting bracket that can be fastened to the base, and by a rope pulley that is non-rotatably connected to it, via which a pull rope or a chain is guided, can be rotated in the winding and unwinding direction, with a friction brake arranged between the winding shaft and the bearing journal and braking the winding shaft and a driver part, which is rotatable or rotatable depending on the direction of rotation between the friction brake and a freewheel through the freewheel is held in a neighboring part, the friction brake being arranged between the winding shaft and the driving part and the freewheel within the driving part between the latter and the non-rotatable bearing journal and in freewheeling at least one locking Kli provided in or on the rotationally fixed bearing journal nke is arranged, which is or are in their locked position.
  • a brake is arranged in such side-pull mechanisms within the hollow winding shaft, which is effective between the winding shaft and the rotationally fixed holder of the blind is.
  • a pin projecting laterally on the roller blind is received in a non-rotatable manner in a wall or ceiling holder.
  • the roller blinds are only rotatably mounted on the side on which the brake mechanism is also arranged. The other side is pivoted.
  • the brake of these pollos must be designed in such a way that, even after signs of wear, it can safely hold the moment which can be exerted on the winding shaft in the unwinding direction by the weight of the roller blind material - including any weighting at the lower edge of the roller blind. Since these roller blinds are wound up against the action of the brake, this means that a correspondingly large moment has to be overcome in addition to the winding torque that arises anyway from the roller weight which has not yet been wound up. This is perceived as uncomfortable - especially with large and heavy pollos. Large rope pulleys are therefore arranged on the roller blind because this unpleasant effect is less noticeable. However, due to the need to install blinds as close as possible to the wall or ceiling, there are limits to this measure.
  • roller blinds are installed side by side, one of which - because it is intended for a wide window front, for example - is relatively heavy and the other - for example for a balcony door next to it - is relatively light, it disturbs the user emotionally that the easy thing to do when unwinding Roller blinds require a comparatively higher unwinding force due to the brake being less relieved by the lower fabric weight.
  • a freewheel was provided in the cable-pull mechanism, which uncouples the friction brake when the roller shaft is rotated in the winding direction, so that it is only effective in the winding direction.
  • the operator only has to apply the moment dependent on the weight of the roller blind, i.e. the braking torque of the friction brake does not act in the winding direction.
  • the freewheel of the known cable-pull mechanism works with pawls which act in the unwinding direction and can be driven over during winding, and are resiliently pretensioned into the locking position.
  • the invention has for its object to provide a side pull mechanism for roller blinds, which is better tailored to the needs during use of the mechanism and is improved over the known roller blind drive in that it - regardless of the arrangement of the The ends of the roller blind shaft and regardless of whether the roller blind should run in front of or behind the take-up shaft - can be used for any conceivable attachment without modification.
  • the pawl (s) is or are formed by a pin which is mounted in a bore and is forced into the locking position by gravity
  • the driver part is divided lengthways is and consists of two substantially identical halves, in which at least one locking contour is formed for the freewheel, and that the driver part is mounted radially and axially on the rotationally fixed bearing journal.
  • the pawl (s) designed to be particularly easy to produce and assemble (s) is or are mounted in or on the non-rotatably mounted journal, enables the freewheel to be switched on and off can be achieved in a particularly simple manner by changing the position of the rotationally fixed bearing journal, a further simplified construction being achieved by the longitudinal division and the composition of the driver part from two essentially identical halves, in each of which at least one locking contour is formed for the freewheel.
  • the components can be manufactured as injection-molded plastic parts without machining. This results in low tool costs, low storage and handling costs and simple assembly.
  • roller blind If the rotatable bearing pin of the roller blind can be inserted into the associated bracket fitting in two positions rotated by 180 ° and two counter-rotating, gravity-free arrangements are provided, which are also rotated by 180 °, the direction of rotation of the freewheel (right-hand or left-hand rotation) is freely selectable simply by moving the roller blind in the bracket fitting.
  • the roller blind is suitable for all types of use, i.e. the side pull mechanism can be attached to the right or left of the roller blind shaft and the fabric or curtain can run in front of or behind the roller blind shaft.
  • a compact cup-shaped hollow plug can be provided in the winding shaft, the bottom of which forms the brake disc and which accommodates the driver part.
  • the braking torque can be adjusted by a nut that can be screwed onto a spindle running along the axis of the roller blind, the adjustable nut forming the counter bearing for a spring acting on the brake shoes, requires little radial space in the take-up reel, but uses the axial one available space without restriction.
  • a side pull mechanism 22 is shown in section. 10 in this cross section denotes a pot-shaped hollow plug.
  • the hollow plug 10 is driven into a tube, not shown, which forms the winding shaft of a side pull roller blind.
  • the hollow plug 10 is then connected in a rotationally fixed manner to the winding shaft of the roller blind.
  • the hollow plug 10 has an open and a closed end. At the open end of the hollow plug 10, a rope pulley 12 is formed on it. A rope or chain, not shown, is placed around the circumferential surface of the rope pulley 12. The rope or chain is thickened at regular intervals. The chain links or the thickenings of the rope engage in corresponding recesses 14 in the circumference of the rope sheave. By pulling on one or the other strand of the closed rope loop or chain loop, the rope pulley can be rotated in one or the other direction. This rotation is transferred to the winding shaft of the roller blind and the fabric on the winding shaft is wound up or unwound.
  • a cover 16 is slipped over the sheave 12 and held with locking projections 18. Openings 20 are provided on the underside of the cover 16 in order to allow the rope or chain to pass through.
  • a bearing journal 24 protrudes laterally from the side pull mechanism 22 and is used to support the roller blind shaft.
  • the pin 24 has flats 26 at its end protruding from the side-pull mechanism 22. These flats 26 enable the pin 24 to be held in a rotationally fixed manner in a corresponding receptacle of a bracket fitting (not shown) Recording on the wall or the ceiling, as is customary in the case of roller blinds, which has the shape of an upright rectangle, then the flats 26 in this recording are held in a rotationally fixed vertical manner.
  • the receptacle and the flats 26 allow two bearings rotated by 180 °.
  • the pin 24 pierces the cover 16 with the flats 26 and holds the cover 16 in a rotationally fixed manner with the flats 26.
  • the side pull mechanism 22 and thus the roller blind shaft is mounted on the bearing 24 on two bearing surfaces 28 and 30. Shoulders 32 and 34 secure the pin in the axial direction in the side pull mechanism 22.
  • the pin 24 is received in the hollow plug 10 in a driver part 36.
  • the driver part 36 is divided lengthways and made of two essentially identical halves 36a and 36b in order to be able to accommodate the pin 24 without complex assembly.
  • the two driver part halves 36a and 36b are designated together with 36.
  • the driver part 36 is also arranged between the winding shaft and the non-rotatable bearing pin 24.
  • the two halves of the driver part are held together by the union sleeves 38 and 40.
  • the outer sides of the union sleeves 38 and 40 serve as bearing surfaces for mounting the entire assembly in the hollow plug 10.
  • the bearing of the driver part 36 on the pin 24 through the surfaces 30 and 28 is rotatable per se, but between the two bearing surfaces 30 and 28 two free-wheel arrangements 42 and 44 are provided, which act between the driver part 36 and the externally rotatably mounted pin 24. However, only one of these two freewheel assemblies 42 and 44 is in operation.
  • the freewheels 42 and 44 each consist of a locking pin 46 or 48 and a locking contour 50 or 52.
  • the locking pins 46 and 48 are inserted in the pin 24, which is non-rotatably mounted, in a blind hole 54 and 56, respectively, so that they can move easily.
  • the center lines of the blind holes 54 and 56 run parallel to one another and at right angles through the axis of the pin 24. They are aligned parallel to the flats 26. However, the open mouths of the blind holes 54 and 56 point in opposite directions.
  • one blind hole 54 or 56 always points downwards and the other upwards.
  • the loosely inserted locking pin 48 remains on the bottom of the blind hole 54.
  • the inserted locking pin 46 falls down and - as far as possible - due to the force of gravity acting on it.
  • Two locking contours 50 and 52 are formed in the driver part 36 at this point between the bearing surfaces 28 and 30 in alignment with one of the two blind holes 54 and 56.
  • 5 and 6 are cross sections according to section lines 5-5 and 6-6 through the driver part 36 in the area of the locking contours 50 and 52.
  • the pin 24 with the locking pins 46 and 48 is omitted in these cross sections.
  • the locking contours 50 and 52 are in their course with steps 58 verses hen. Depending on the direction of travel, the locking pin 46 or 48 falling out of the blind hole 54 or 56 downwards can slide over the steps 58, or the movement is inhibited as soon as the pin 58 reaches the first step 58.
  • a freewheel arrangement is produced between the fixed pin 24 and the rotating driver 36.
  • the driver part 36 In one direction of rotation the driver part 36 is held in a rotationally fixed manner with respect to its neighboring part, the pin 24, in the other direction of rotation the driver part 36 rotates freely.
  • the driver part therefore accommodates the freewheels 42 and 44 in its interior and at the same time supports the pin 24 to be held in a rotationally fixed manner in the associated mounting fitting.
  • the blocking contours 50 and 52 are designed in opposite directions.
  • the two freewheels 42 and 44 therefore each act in the opposite direction, they are opposite and are rotated by 180 °.
  • Which of the two freewheeling directions is effective in the side pull roller blind is determined by the type of mounting of the flats 26 in a wall bracket, not shown.
  • the flats 26 must in any case be kept vertical. Which of the sides of the flats 26 points forward, for example, determines which of the blind holes 54 and 56 points downward and thus determines which freewheeling direction is set.
  • the bottom of the pot-shaped hollow plug 10, in which the driver part 36 is mounted, is used as a brake disk 60 arranged perpendicular to the axis of the roller blind in order to form the friction brake of the side pull roller blind.
  • the bottom of the hollow plug 10 is reinforced on the inside with an inserted metal plate 62 against wear.
  • the brake disc 60 is integrally connected to the hollow plug 10 and thus rotationally fixed to it, the metal plate is secured against rotation in the hollow plug 10; both are connected to the take-up reel in a rotationally fixed manner.
  • the brake disc 60 is acted upon by brake shoes from both sides.
  • the brake shoe is formed by the end face of the coupling sleeve 38.
  • the end face of the union nut 38 is coated with a friction lining 64, the union nut is connected to the driver part 36 in a rotationally fixed manner.
  • a ring 66 rests on the outer bottom of the hollow plug 10 as a brake shoe.
  • Both brake shoes, the ring 66 and the end face of the union nut 38 must be pressed against each other against the brake disc 60 between them in order to form an effective friction brake.
  • the driver part 36 extends through the bottom of the pot-shaped hollow plug 10, i.e. through the brake disc 60.
  • this extension of the driver part 36 forms a spindle 68.
  • the spindle 68 runs along the axis of the roller blind shaft and carries a nut 70 which is adjustable on the spindle 68.
  • a compression spring 72 is also pushed over the spindle 68.
  • the compression spring 72 rests on one brake shoe, namely on the ring 66.
  • the adjustable nut 70 acts as a counter bearing for the spring 72.
  • the friction brake thus acts on one side between the hollow plug 10, on which the brake disc 60 is formed, and the driver part 36 on the other side, on which the coupling sleeve 38 is fastened in a rotationally fixed manner.
  • the friction brake therefore also acts between the take-up shaft connected in a rotationally fixed manner to the hollow plug and the pin 24 supporting the roller blind shaft. Due to the freewheels 42 and 44, the friction brake always only acts in one direction of rotation, in the other The roller blind rotates freely.
  • the driver part lies between the friction brake and the freewheels 42 and 44 and the friction brake acts between the take-up shaft and the driver part 36, the freewheels 42 and 44 act between the driver part and the bearing journal to be held in a rotationally fixed manner.
  • the braking force of the friction brake can be adjusted precisely to the various needs.
  • the spring 72 is compressed, the pressing force of the brake shoes on the brake disc 60 is increased and the braking force, which prevents the winding shaft from spinning freely, is increased and can thus be adapted to higher weights of the roller blind to be wound onto the roller blind shaft.
  • two grooves 74 are provided in the spindle 68.
  • the fuse 78 is visible in FIG. 7 in the unfolded state.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Braking Arrangements (AREA)
EP19910114639 1990-09-03 1991-08-30 Mécanisme latéral pour l'entraînement d'un store enroulable Expired - Lifetime EP0474134B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4027852 1990-09-03
DE19904027852 DE4027852A1 (de) 1990-09-03 1990-09-03 Seitenzug-mechanik fuer rollos

Publications (2)

Publication Number Publication Date
EP0474134A1 true EP0474134A1 (fr) 1992-03-11
EP0474134B1 EP0474134B1 (fr) 1993-09-22

Family

ID=6413470

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910114639 Expired - Lifetime EP0474134B1 (fr) 1990-09-03 1991-08-30 Mécanisme latéral pour l'entraînement d'un store enroulable

Country Status (3)

Country Link
EP (1) EP0474134B1 (fr)
DE (1) DE4027852A1 (fr)
DK (1) DK0474134T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2697577A1 (fr) * 1992-11-03 1994-05-06 Simu Mécanisme à débrayage automatique pour l'actionnement des stores et autres dispositifs de fermeture à enroulement.
US6158563A (en) * 1998-07-15 2000-12-12 Hunter Douglas International N.V. Winding mechanism
EP1561897A3 (fr) * 2004-02-04 2008-06-04 Beatrix Dipl.-Ing. Gross Dispositif de freinage

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104839127B (zh) * 2015-06-04 2017-07-28 张国山 一种自动化虫情测报设备的传动装置
CN104839125B (zh) * 2015-06-04 2017-02-22 张国山 一种适用于捕虫机的防自转滚筒结构
CN104886023A (zh) * 2015-06-04 2015-09-09 张国山 一种适用于自动化虫情测报设备的传动辊结构

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE861887A (fr) * 1977-12-15 1978-03-31 Segerljung Bo Valter Dispositif de freinage pour des tiges pouvant tourner et rappelees par ressort
DE2648525A1 (de) * 1976-10-27 1978-05-03 Widmer Fa Oskar Federwellenmechanik fuer springrollos
GB2055936A (en) * 1979-08-15 1981-03-11 Sandall R E A roller blind control mechanism
DE3534628A1 (de) * 1985-09-28 1987-04-02 Stoever Adolf Bautex Kg Rolloantrieb

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6133117B2 (fr) * 1980-04-07 1986-07-31 Joeru Beruman Deii Bii Ei Joeru Beruman Asosheitsu

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2648525A1 (de) * 1976-10-27 1978-05-03 Widmer Fa Oskar Federwellenmechanik fuer springrollos
BE861887A (fr) * 1977-12-15 1978-03-31 Segerljung Bo Valter Dispositif de freinage pour des tiges pouvant tourner et rappelees par ressort
GB2055936A (en) * 1979-08-15 1981-03-11 Sandall R E A roller blind control mechanism
DE3534628A1 (de) * 1985-09-28 1987-04-02 Stoever Adolf Bautex Kg Rolloantrieb

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2697577A1 (fr) * 1992-11-03 1994-05-06 Simu Mécanisme à débrayage automatique pour l'actionnement des stores et autres dispositifs de fermeture à enroulement.
US6158563A (en) * 1998-07-15 2000-12-12 Hunter Douglas International N.V. Winding mechanism
EP1561897A3 (fr) * 2004-02-04 2008-06-04 Beatrix Dipl.-Ing. Gross Dispositif de freinage

Also Published As

Publication number Publication date
DE4027852A1 (de) 1992-03-05
DK0474134T3 (da) 1994-02-21
EP0474134B1 (fr) 1993-09-22
DE4027852C2 (fr) 1993-02-18

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