EP0274656A2 - Dispositif d'arrêt - Google Patents

Dispositif d'arrêt Download PDF

Info

Publication number
EP0274656A2
EP0274656A2 EP87118004A EP87118004A EP0274656A2 EP 0274656 A2 EP0274656 A2 EP 0274656A2 EP 87118004 A EP87118004 A EP 87118004A EP 87118004 A EP87118004 A EP 87118004A EP 0274656 A2 EP0274656 A2 EP 0274656A2
Authority
EP
European Patent Office
Prior art keywords
worm wheel
worm
roller shutter
shutter shaft
stop
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
EP87118004A
Other languages
German (de)
English (en)
Other versions
EP0274656B1 (fr
EP0274656A3 (en
Inventor
Manfred-Josef Dipl.-Ing. Peters (Fh)
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.)
SIBYLLA NEUKIRCHEN
Original Assignee
Wuh Neukirchen & Co KG GmbH
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 Wuh Neukirchen & Co KG GmbH filed Critical Wuh Neukirchen & Co KG GmbH
Priority to AT87118004T priority Critical patent/ATE63969T1/de
Publication of EP0274656A2 publication Critical patent/EP0274656A2/fr
Publication of EP0274656A3 publication Critical patent/EP0274656A3/de
Application granted granted Critical
Publication of EP0274656B1 publication Critical patent/EP0274656B1/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
    • E06B9/84—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic against dropping

Definitions

  • the invention relates to a safety device against unintentional rolling of a roller shutter, which is driven by a drive worm and a first worm wheel arranged in a rotationally fixed manner on the roller shutter shaft, with a second worm wheel meshing with the drive worm and synchronously running in the free-running state of the roller shutter shaft with its change in position compared to the first worm wheel in the absence of engagement of the teeth of the first worm wheel in the teeth of the drive worm blocking the roller shutter shaft against a fixed stop.
  • the first and the second worm wheel are connected to one another in a rotationally fixed manner by spring-supported axial screws and are axially displaceable against the spring force.
  • the teeth of both worm gears are in engagement with the toothing of the drive worm. If the engagement of the toothing of the first worm wheel with the drive worm fills up, for example as a result of material wear, the engagement between the toothing of the second worm wheel and the drive worm takes effect.
  • the inclination of the tooth flanks of the second worm wheel results in an axial force component which, due to the axially resilient support of the second worm wheel, leads to its axial displacement in the direction of the stop fixed to the housing.
  • a toothing carried by the second worm wheel engages with the stop fixed to the housing, so that the roller shutter is prevented from falling by blocking the roller shutter axle against the stop.
  • the second worm wheel Since in this safety gear, when there is no engagement between the first worm wheel and the drive worm, the force or torque that occurs when the roller shutter shaft is blocked is absorbed exclusively by the second worm wheel, the second worm wheel must be of a correspondingly large size.
  • the second worm wheel is rotatably mounted so that it rotates in the absence of engagement of the drive worm in the first worm wheel relative to this and driver elements on the second worm wheel locking body of a friction device acting as a blocking device from the free-running state in the opposite of the roller shutter shaft bring the housing-fixed stop blocking condition.
  • the safety device according to the invention is particularly distinguished from the prior art in that the torque which arises on the roller shutter shaft is derived directly via blocking bodies onto the stop fixed to the housing when the first worm wheel disengages from the drive worm.
  • the effect of the second worm wheel is limited according to the invention to the actuation of the blocking device, but without a substantial portion of the blocking force being transmitted via the second worm wheel, so that the functional safety of the safety device is increased compared to the prior art. Because the second worm wheel does not have to be designed to absorb the blocking forces, its execution thereby saves space.
  • the anti-friction lock has a support surface assigned to the roller shutter shaft and a support surface assigned to the stop fixed to the housing, between which the locking bodies are located. In normal operation, these are guided freely between the surfaces by the driver elements of the second worm wheel, so that they do not cause any noticeable friction between the stop and the roller shutter shaft. When the worm wheels are rotated relative to one another, these driver elements have the function of displacing the locking bodies between the support surfaces in such a way that they block movement of the roller shutter shaft relative to the housing.
  • a particularly simple embodiment is obtained if one of the two support surfaces has a polygonal contour and the other support surface has a circular contour, the radial dimensions of the blocking bodies being between the smallest and the largest distance between the support surfaces.
  • cylindrical disks can advantageously be provided as locking bodies.
  • the Driver elements are preferably formed as cams formed on the second worm wheel, which engage in the annular space between the support surfaces in the spaces between the locking bodies.
  • a drive worm 1 connected to a drive, not shown, is in meshing engagement with a first worm wheel 2, which is connected in a rotationally fixed manner to a roller shutter shaft 4 via a key 3.
  • a second worm wheel 5 is rotatably mounted on one side of the first worm wheel 2 with respect to the latter and with respect to the roller shutter shaft 4 on the roller shutter shaft 4 and is also in engagement with the toothing of the drive worm 1.
  • the second worm wheel 5 is on the side facing away from the first worm wheel 2 axially immovable against a shoulder of a stop 6 fixed to the housing and carries cams 7 which are arranged on a concentric circular path and are distributed over the circumference of the circle and serve as driver elements.
  • the cams 7 have a base in the form of a circular ring piece.
  • the roller shutter shaft 4 carries a flange with a polygonal shape in the area of the second worm wheel 5 Boundary.
  • this support surface 9 formed by the polygonal boundary and a cylindrical support surface 10 of the stop 6 connected to the housing there are blocking bodies 8 in the form of cylindrical disks, a disk 8 being assigned to each edge of the surface 9.
  • the positioning of the locking body 8 between the support surfaces 9 and 10 is carried out by the driver elements 7.
  • the elements 6, 7, 8, 9, 10 together form a frictional directional lock, which is shown in Fig. 2 in the free running and in Fig. 3 in the blocking state .
  • Fig. 3 shows the arrangement of the Reibrichtgesperres in the blocking state.
  • the locking body 8 are moved by the driver elements 7 in a clamped position between the support surfaces 9, 10, so that rotation of the roller shutter shaft 4 is prevented with respect to the housing.
  • the drive worm 1 meshes with both worm wheels 2, 5, so that the locking bodies 8 are held approximately in the middle of the support surfaces 9.
  • the position of the driver elements 7 relative to the polygonal support surface 9 corresponds to the arrangement shown in FIG. 2 with a free-running directional lock. But if an accident occurs, for example when the teeth of the first worm wheel 2 wear and consequently disengages from the drive worm 1, the two worm wheels 2, 5 are rotated relative to one another until the frictional directional lock assumes the blocking state shown in FIG. 3 .
  • the torque on the roller shutter shaft 4 is transmitted directly to the stop 6 fixed to the housing, so that the force is dissipated to the housing practically exclusively in this way.
  • the safety device described acts in both directions of rotation of the roller shutter shaft 4.
  • the safety device according to the invention also acts not only when the described accident occurs, but also when the teeth of the second worm wheel 5 are no longer in engagement with the Drive worm 1 stand, or if the connection between the teeth of the two worm wheels 2, 5 is broken by the toothing of the drive worm 1 by a break of the drive worm 1. In these cases, the worm wheels 2, 5 are rotated relative to one another by the different inertial forces occurring on the worm wheels, so that the locking bodies 8 also come into the blocking state shown in FIG. 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Gear Transmission (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
  • Transmission Devices (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Manipulator (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Cookers (AREA)
EP87118004A 1987-01-16 1987-12-05 Dispositif d'arrêt Expired - Lifetime EP0274656B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87118004T ATE63969T1 (de) 1987-01-16 1987-12-05 Fangvorrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3701106 1987-01-16
DE3701106A DE3701106C1 (fr) 1987-01-16 1987-01-16

Publications (3)

Publication Number Publication Date
EP0274656A2 true EP0274656A2 (fr) 1988-07-20
EP0274656A3 EP0274656A3 (en) 1989-06-07
EP0274656B1 EP0274656B1 (fr) 1991-05-29

Family

ID=6318935

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87118004A Expired - Lifetime EP0274656B1 (fr) 1987-01-16 1987-12-05 Dispositif d'arrêt

Country Status (3)

Country Link
EP (1) EP0274656B1 (fr)
AT (1) ATE63969T1 (fr)
DE (2) DE3701106C1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2394754A (en) * 2002-09-20 2004-05-05 Kaba Door Systems Ltd A shutter or door operating mechanism
EP3865446A1 (fr) * 2020-02-12 2021-08-18 Framo Morat GmbH & Co. KG Boîte de vitesses

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2824375B1 (fr) 2001-05-04 2003-06-13 Simu Reducteur epicycloidal et mecanisme de manoeuvre d'une installation de fermeture de protection solaire comprenant un tel reducteur

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3129648A1 (de) * 1981-07-28 1983-02-17 W. u. H. Neukirchen GmbH & Co KG, 4060 Viersen Antrieb fuer ein rolltor
DE3427505A1 (de) * 1984-07-26 1986-02-06 Menke, Wilhelm, 4425 Billerbeck Fangvorrichtung fuer rolltore, rollgitter o.dgl.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3129648A1 (de) * 1981-07-28 1983-02-17 W. u. H. Neukirchen GmbH & Co KG, 4060 Viersen Antrieb fuer ein rolltor
DE3427505A1 (de) * 1984-07-26 1986-02-06 Menke, Wilhelm, 4425 Billerbeck Fangvorrichtung fuer rolltore, rollgitter o.dgl.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2394754A (en) * 2002-09-20 2004-05-05 Kaba Door Systems Ltd A shutter or door operating mechanism
GB2394754B (en) * 2002-09-20 2005-10-19 Kaba Door Systems Ltd Door and shutter mechanism
EP3865446A1 (fr) * 2020-02-12 2021-08-18 Framo Morat GmbH & Co. KG Boîte de vitesses

Also Published As

Publication number Publication date
DE3701106C1 (fr) 1988-06-23
EP0274656B1 (fr) 1991-05-29
ATE63969T1 (de) 1991-06-15
EP0274656A3 (en) 1989-06-07
DE3770440D1 (de) 1991-07-04

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