EP0219454A1 - Vorrichtung zum Auf- und Abrollen und zum selbsttätigen Bremsen des Behangs einer Sonnen- und Wetterschutzanlage - Google Patents

Vorrichtung zum Auf- und Abrollen und zum selbsttätigen Bremsen des Behangs einer Sonnen- und Wetterschutzanlage Download PDF

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Publication number
EP0219454A1
EP0219454A1 EP86810408A EP86810408A EP0219454A1 EP 0219454 A1 EP0219454 A1 EP 0219454A1 EP 86810408 A EP86810408 A EP 86810408A EP 86810408 A EP86810408 A EP 86810408A EP 0219454 A1 EP0219454 A1 EP 0219454A1
Authority
EP
European Patent Office
Prior art keywords
gear
parts
drive shaft
turn
driven wheel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP86810408A
Other languages
German (de)
English (en)
French (fr)
Inventor
Ernst Bernhard
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.)
Hartmann & Co Ag
Original Assignee
Hartmann & Co Ag
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 Hartmann & Co Ag filed Critical Hartmann & Co Ag
Publication of EP0219454A1 publication Critical patent/EP0219454A1/de
Withdrawn legal-status Critical Current

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Classifications

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

Definitions

  • the invention relates to a device for rolling up and down and for automatically braking the curtain of a sun and weather protection system, with a drive shaft which can be actuated via a crank drive or an electric motor, a gearbox with a worm which is in engagement with a driven wheel, and two brake drums, as well as an output shaft that can be actuated via a driver fixed in the driven gear.
  • the invention specified in claim l was based on the object of eliminating the known mechanical limit stops by a device by which the components of the sun and weather protection system when reaching the lower and the upper stop position of the curtain, but also in any intermediate position, from overstraining and damage would be protected if necessary.
  • the assembly times of such a device should be shortened compared to the prior art.
  • the deblocking and readjustment of the stop positions of the curtain should be carried out during the assembly of the curtain in a very simple, time-saving manner.
  • the drive shaft of which is electrically driven the automatic shutdown of the electric drive should also be enabled when the transmission-side torque interruption is triggered.
  • a sun and weather protection system comprises a drive shaft 1, a transmission 7 (see FIG. 1) and an output shaft, not shown.
  • the drive shaft 1 is set in rotation by a schematically illustrated crank drive 2 or an electric motor 33.
  • the drive shaft l is carried out by two tubular coupling parts ll, ll ', which are accommodated in the transmission housing 5 in an abutting and coaxial manner.
  • the ends of the coupling parts ll, ll ' are stored in bearing shells 5l, 5l'.
  • the drive shaft l is longitudinally displaceable in the coupling parts ll, ll 'and is positively mounted on the circumference at an angle of approximately 45 °.
  • the worm is supported by the coupling parts ll, ll '.
  • the worm 3 is in constant engagement with an output gear 4, in which a driver 10 is fastened for actuating the output shaft, not shown.
  • a flat coil spring l2, l2 ' which has a special shape, is mounted on each coupling part ll, ll'.
  • the one, outwardly directed coil part l9, l9 'of each coil spring l2, l2' has a smaller diameter than the other, inwardly directed coil part 20, 20 '.
  • the inside diameter of the one winding part l9, l9 ' is also smaller than the outside diameter of the coupling part ll, ll'.
  • the angled end part of the one winding part l9, l9 ' is denoted by l7, l7'.
  • a fixed brake drum l3, l3 ' is placed on each inward winding part 20, 20' puts.
  • the braking effect is achieved by the other winding part 20, 20 'resting on the inner wall of the brake drum l3, l3'.
  • the worm 3 is placed between the two brake drums l3, l3 'on the winding-free sections of the coil springs l2, l2'.
  • Insert blades 9 are provided between the screw 3 and the brake drums l3, l3 '.
  • Each angled end part l8, l8 'of the coil-free sections of the coil springs l2, l2' engages in a wedge path 8 formed on both sides of the worm 3 in a force-locking manner.
  • a bore 32 with an oval outer contour is provided in the housing 5, in which the driven wheel 4 with the driver 10 is mounted so as to be radially displaceable with play (see FIG. 2).
  • the stub shafts 28 of the driven wheel 4 are supported in bearing shells 30, 30 'which are prestressed by spring assemblies 3l, 3l'. These spring assemblies 3l, 3l 'consist of one or more spring plates.
  • three slats are shown in the left half and only one in the right half. The three slats in the left half are for raising, whereas the one in the right half is for lowering the curtain.
  • the preload force of the bearing shells 30, 30 ' can be changed in stages by the spring plates 3l, 3l'.
  • the driven wheel 4 shifts radially from its center by about 1 mm.
  • the reasons for exceeding the spring force can include, for example, frozen end rails of the curtain, latched latches, an object lying in the area of the curtain on the window sill etc.
  • each end stop 2l, 2l ' is housed, which are in engagement with the coil springs l2, l2'.
  • Each end stop 2l, 2l ' consists of a set of three intermeshing gears 23, 23', 25, 25 ', 26, 26' (see FIGS. 4 and 5), which can be freely selected within the adjustment range of approx. 220 revolutions jam automatically.
  • the gears have unequal diameters.
  • the three gears are each housed in a pair of guide blades 22, 22 'which are resilient.
  • the first, largest gear 23, 23 'of the set has internal teeth 24, 24'.
  • the angled end part l7, l7 'of the outward winding part l9, l9' of the coil springs l2, l2 ' engages in this internal toothing.
  • the three gears are designed to form a locking device. On these gearwheels - at locations designated by small circles in FIG. 4 - one tooth gap is smaller and one tooth larger than the other gaps or teeth.
  • the number of crank revolutions is freely adjustable and the gears 23, 23 ', 25, 25', 26, 26 'caused by the toothing errors can be jammed.
  • 27, 27 'bearing bolts are shown, by means of which the intermediate gears 25, 25' and the third gears 26, 26 'in the pairs of guide blades 22, 22' and the corresponding recesses of the gear housing 5 are held be.
  • the gear housing 5 further comprises a stop adjustment mechanism 16, 16 ′.
  • a stop adjustment mechanism is provided in each half of the device.
  • Each stop adjustment mechanism comprises an axially movable pressure ring 50, 50 ', a stationary bearing bush 5l, 5l' and a steel cable 53, 53 '(see also FIG. 3).
  • the pressure ring 50, 50 'and the bearing bush 5l, 5l' each contain a toothing 52, 52 'on the end face. Both parts have an edge break on the outer circumference of the teeth 52, 52 ', so that a conical groove 54, 54' is formed all around when the teeth 52, 52 'engage.
  • the steel cable 53, 53 ' is passed through the walls of the gear housing 5 in a bore so that it lies in the groove 54, 54' and wraps around the two parts.
  • the helical spring l2 drawn on the coupling part ll contracts and winds the other winding part 20 located in the brake drum l3, which is of a larger diameter than the first winding part l9, so that the helical spring l2 opens stretched their entire length and thus sits non-positively on the smooth surface of the coupling part ll and takes the screw 3 by means of the winding-free section with the angled end part l8.
  • this winding part is released from the brake drum l3.
  • the opposite helical spring l2 ' is entrained by the end part l8' located in the worm 3 without a turn.
  • the other winding part 20 ' which is of a larger diameter than the first winding part l9', is drawn together in the brake drum l3 'and only runs with one ge wrestle with friction.
  • the device can also function in any position of the curtain except for the lower and upper end stop positions. This is done by the radial displacement of the driven wheel 4 in the oval bore 32 by exceeding the maximum permissible torque.
  • the driven wheel 4 presses on the inner guide blade of one of the pairs 22, 22 'by its displacement. Due to the increased friction now occurring between the lower gear wheels 25, 25 'or 26, 26' and the inner guide blade of the pair 22, 22 ', an increasing force acts on the angled end part l7, l7' of the coil spring l2, l2 ', because the wheels 23, 23 ', 25, 25', 26, 26 'no longer turn.
  • the result of this is that the outward turn part l9, l9 'of the helical spring l2, l2' is unscrewed, so that no torque transmission can take place between the drive shaft l and the worm 3.
  • the set stop position can be unblocked by pulling on the steel cable 53, 53 'of the stop adjustment mechanism l6, l6' and readjusted again.
  • the steel cable 53, 53 ' By pulling on the steel cable 53, 53 ', the loop around the pressure ring 50, 50' and the bearing bush 5l, 5l 'shrinks and the steel cable penetrates into the conical groove 54, 54'.
  • the pressure ring 50, 50 ' is set into an axial movement in the direction of the outer guide blade 22, 22' of the end stops 2l, 2l '.
  • the first gear 23, 23 ' is also slightly axially displaced, as a result of which the angled end part 17, 17' comes out of the internal toothing 24, 24 'of the first gear 23, 23'.
  • the angled end part l7, l7 ' is no longer in engagement with the internal toothing 24, 24'.
  • the desired new stop position is then set, and the steel cable 53, 53 'is then relieved.
  • the gear 23, 23 ' is pushed back by the pairs of guide blades 22, 22' and the pressure ring 50, 50 'by a wave washer 55, 55'.
  • the angled end part l7, l7 'of the helical spring l2, l2' engages in the closest gap in the internal toothing 24, 24 'of the first gear 23, 23' and prevents further rotation beyond the set stop position.
  • An electric motor 33 is accommodated in a housing 44 according to FIGS. 1 and 6. With the square shaft 4l of the electric motor 33, the rotary movement generated by the electric motor is transmitted to the drive shaft 1 and the worm 3.
  • a cam disk 34 which has only a single cam 40, is placed on the square shaft 4l between the electric motor 33 and the worm 3.
  • a ratchet wheel 35 is placed on an axis 43 in the housing 44, the cam 40 of the cam disk 34 engaging into one of the gaps between the teeth 45 of the ratchet wheel 35 when the electric motor 33 rotates. Thus, the switching wheel 35 is rotated by one tooth 45 per handling of the cam disk 34.
  • Disc springs 39 are used to brake the switching wheel 35 during the rotary movement and to lock it in its rest position until it is rotated again by the cam disk 34.
  • pins 38 Perpendicular to the wheel plane 35 pins 38 are provided on both sides of the ratchet wheel, which are arranged radially on each side. They are intermittently set against each other on each side of the ratchet wheel 35.
  • a two-armed actuating lever 36 is also provided, the lever from the housing 44 in Arm projecting in the direction of the driven wheel 4, which arm is provided with a tooth 46 at its end, is in engagement with the toothing 47 of the driven wheel 4.
  • the actuating lever 36 is fixed in the housing 44 so that it can pivot about a point (fixing screw 48).
  • the end of the other arm of the operating lever 36 is formed by a fork 49.
  • the fork 49 surrounds the ratchet 35.
  • the actuating lever 36 is rocked by the rotational movement of the driven wheel 4. The result of these rocking movements is that the pins 38 of the switching wheel 35 do not abut the fork 49 of the actuating lever 36; the fork 49 swings away from the pins 38. Thus, the fork 49 is not laterally deflected and the limit switches 37, 37 ', which are also accommodated in the housing 44, are not actuated.
  • the circuit to the electric motor 33 remains closed.
  • the forces acting on the driven wheel 4 are indicated in FIG. Depending on the direction of rotation of the drive shaft l it does not occur (among others here forces) to form components Fx, Fy or Fx ', Fy'.
  • the component Fx or Fx '- if it is large enough in terms of amount - causes a radial displacement of the driven wheel 4 in the direction x or x'. This lateral displacement is made possible because the driven wheel 4 is mounted in the oval bore 32 in a radially movable manner in bearing shells 30, 30 'preloaded with spring assemblies 3l, 3l'.
  • the end stops 2l, 2l ' are blocked, as a result of which the transmission of the torque is interrupted and no damage to the components of the sun or weather protection system can take place.
  • the coupling is carried out in two parts, so that the coupling parts ll, ll 'can turn on the drive shaft l by about 90 ° to each other.
  • the electric motor 33 switches off automatically when the driven wheel 4 is stationary.

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)
  • Curtains And Furnishings For Windows Or Doors (AREA)
EP86810408A 1985-09-10 1986-09-09 Vorrichtung zum Auf- und Abrollen und zum selbsttätigen Bremsen des Behangs einer Sonnen- und Wetterschutzanlage Withdrawn EP0219454A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH390285A CH669636A5 (enrdf_load_stackoverflow) 1985-09-10 1985-09-10
CH3902/85 1985-09-10

Publications (1)

Publication Number Publication Date
EP0219454A1 true EP0219454A1 (de) 1987-04-22

Family

ID=4265959

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86810408A Withdrawn EP0219454A1 (de) 1985-09-10 1986-09-09 Vorrichtung zum Auf- und Abrollen und zum selbsttätigen Bremsen des Behangs einer Sonnen- und Wetterschutzanlage

Country Status (2)

Country Link
EP (1) EP0219454A1 (enrdf_load_stackoverflow)
CH (1) CH669636A5 (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0446049A3 (en) * 1990-03-07 1992-06-24 Rotalac Plastics Limited Improved roller shutter assembly
AU698353B1 (en) * 1998-01-07 1998-10-29 Ying Fu Wu Vehicle roller blind
ES2263337A1 (es) * 2004-06-30 2006-12-01 Miguel Emper Sanchez Dispositivo autobloqueante para persianas y cierres.
ES2288073A1 (es) * 2005-06-17 2007-12-16 Miguel Emper Sanchez Dispositivo autobloqueante perfeccionado para persianas y cierres.
WO2008095335A1 (en) * 2007-02-02 2008-08-14 Inno Digic Ltd. Adjusting structure for limit switch
CN101220729B (zh) * 2007-01-09 2010-09-08 现代微控股份有限公司 极限开关的调整结构
CN113079593A (zh) * 2021-03-24 2021-07-06 吉首市宏佳达科技有限公司 一种用于5g物联网基站的散热机构

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR916214A (fr) * 1943-08-12 1946-11-29 Manuf De Volets & Stores Roula Dispositif de commande pour persiennes, stores roulants, etc.
FR2141534A1 (enrdf_load_stackoverflow) * 1971-06-04 1973-01-26 Riou Jean
FR2449192A1 (fr) * 1979-02-13 1980-09-12 Feller Samuel Perfectionnements apportes aux dispositifs de manoeuvre de volets roulants, stores et similaires
FR2455160A1 (fr) * 1979-04-27 1980-11-21 Baldanello U Volet roulant, ou analogue, a entrainement electrique et commande automatique

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR916214A (fr) * 1943-08-12 1946-11-29 Manuf De Volets & Stores Roula Dispositif de commande pour persiennes, stores roulants, etc.
FR2141534A1 (enrdf_load_stackoverflow) * 1971-06-04 1973-01-26 Riou Jean
FR2449192A1 (fr) * 1979-02-13 1980-09-12 Feller Samuel Perfectionnements apportes aux dispositifs de manoeuvre de volets roulants, stores et similaires
FR2455160A1 (fr) * 1979-04-27 1980-11-21 Baldanello U Volet roulant, ou analogue, a entrainement electrique et commande automatique

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0446049A3 (en) * 1990-03-07 1992-06-24 Rotalac Plastics Limited Improved roller shutter assembly
US5351743A (en) * 1990-03-07 1994-10-04 Rotalac Plastics Limited Improved roller shutter assembly
AU698353B1 (en) * 1998-01-07 1998-10-29 Ying Fu Wu Vehicle roller blind
ES2263337A1 (es) * 2004-06-30 2006-12-01 Miguel Emper Sanchez Dispositivo autobloqueante para persianas y cierres.
ES2263337B1 (es) * 2004-06-30 2007-11-01 Miguel Emper Sanchez Dispositivo autobloqueante para persianas y cierres.
ES2288073A1 (es) * 2005-06-17 2007-12-16 Miguel Emper Sanchez Dispositivo autobloqueante perfeccionado para persianas y cierres.
ES2288073B1 (es) * 2005-06-17 2009-02-01 Miguel Emper Sanchez Dispositivo autobloqueante perfeccionado para persianas y cierres.
CN101220729B (zh) * 2007-01-09 2010-09-08 现代微控股份有限公司 极限开关的调整结构
WO2008095335A1 (en) * 2007-02-02 2008-08-14 Inno Digic Ltd. Adjusting structure for limit switch
GB2454099A (en) * 2007-02-02 2009-04-29 Inno Digic Ltd Adjusting structure for limit switch
CN113079593A (zh) * 2021-03-24 2021-07-06 吉首市宏佳达科技有限公司 一种用于5g物联网基站的散热机构

Also Published As

Publication number Publication date
CH669636A5 (enrdf_load_stackoverflow) 1989-03-31

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