EP0315793B1 - Rollo, insbesondere Bildwandrollo - Google Patents

Rollo, insbesondere Bildwandrollo Download PDF

Info

Publication number
EP0315793B1
EP0315793B1 EP88117180A EP88117180A EP0315793B1 EP 0315793 B1 EP0315793 B1 EP 0315793B1 EP 88117180 A EP88117180 A EP 88117180A EP 88117180 A EP88117180 A EP 88117180A EP 0315793 B1 EP0315793 B1 EP 0315793B1
Authority
EP
European Patent Office
Prior art keywords
roller blind
winding shaft
stop
pawls
pawl
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
EP88117180A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0315793A3 (en
EP0315793A2 (de
Inventor
Georg Sperber
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.)
Mechanische Weberei GmbH
Original Assignee
Mechanische Weberei 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 Mechanische Weberei GmbH filed Critical Mechanische Weberei GmbH
Publication of EP0315793A2 publication Critical patent/EP0315793A2/de
Publication of EP0315793A3 publication Critical patent/EP0315793A3/de
Application granted granted Critical
Publication of EP0315793B1 publication Critical patent/EP0315793B1/de
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
    • 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

Definitions

  • the invention relates to a roller blind, in particular a screen roller blind according to the preamble of claim 1.
  • roller blinds In the known roller blinds, pawls grip a ratchet disc arranged in a fixed position. Depending on the speed of rotation, the pawls either hook into the intended receptacles of the pawl disc or they overflow the receptacles of the pawl disc.
  • the roller blind In the known construction, the roller blind is blocked again only at a low winding speed, that is to say only with a slow upward movement in the next locking position. When released quickly, the pawls overflow the receptacles of the ratchet disc and the roller blind may run to the end position, ie up to the inlet slot of the housing. This rapid running-in can also have the consequence that the roller blind or the roller blind cord wind several times around the winding shaft.
  • Another disadvantage of the known construction is that the roller blind can also be mechanically damaged, for example torn, in the event of an uncontrolled run-up too quickly.
  • the invention has for its object to design a roller blind of the type presumed to be known so that it has a small-sized and yet very reliable locking device.
  • a locking device for roller shutters is also known (DE-A 2 309 225) in which spring-loaded pawls can be pivoted into a locking position when a predetermined rotational speed is exceeded under the influence of centrifugal force.
  • Two pawls are pivotally connected to the free ends of a rod, which in turn is firmly connected to the rotatable shaft.
  • the two pawls are also articulated by a rod and are pulled towards the center of the shaft by a tension spring.
  • the restoring force of the tension spring overcome and there are projections of the pawls on stops that are arranged around the shaft in a circle.
  • the invention has for its object to design a roller blind of the type presumed to be known so that it has a small and simple construction, yet very reliable locking device.
  • the construction according to the invention has an essential system-related advantage: in contrast to the prior art, in which a high winding speed leads to a failure of the locking effect due to the overflowing of the counter surfaces, the security of the locking effect increases with increasing winding speed in the subject matter of the invention.
  • the result of this is that if the blind is rolled up in an uncontrolled manner, its locking is guaranteed to be guaranteed well before the end position is reached. It can there is no overflow of the end position or tearing of the blind surface.
  • pawls are provided, the pivot axes of which are evenly distributed on a circle, the center of which lies in the axis of rotation.
  • the blind can run up by only comparatively small amounts when released.
  • the pawls are mounted between two flanges which are arranged at a distance from one another and which have transverse webs serving as locking elements for the pawl.
  • the pawls can be stored particularly simply and reliably, and a type of cage for the pawls is formed with the aid of the two flanges and the crossbars.
  • the flanges have central, non-circular openings which are aligned with one another and which are penetrated by a bearing journal having a corresponding outer profile.
  • the cage consisting of the two flanges with pivots pivotally mounted therebetween is simply pushed onto the bearing journal.
  • the roller blind has a weighting tube 1 at the lower end of the roller blind material 2, which can form a projection surface.
  • the roller blind material is wound on a winding shaft 5, which has a return spring 6 in its center.
  • the return spring 6 is tensioned when the roller blind unrolls and rotates the winding shaft backwards in order to wind up the roller blind material 2.
  • the housing of the roller blind shown consists of a housing tube shown here hexagonal, which has end caps 3 and a wall and ceiling bracket 4.
  • the winding shaft 5 has bearing journals on its end faces.
  • the right bearing journal according to FIG. 1 has a non-round, hexagonal contour and a bearing 12 at its end.
  • Two round flanges 11 parallel to each other are pushed onto the bearing journal 16 and are connected to one another via rivets 10.
  • the rivets 10 serve as bearing journals for the pivotable pawls 9, which are only shown simply, but in practice are provided several times.
  • the two flanges 11 have transverse webs 13 which are not visible in FIG Crosspieces 13 serve as locking elements for the pivoting path of the pawl 9 in the direction of the arrow 17 (cf. FIG. 2).
  • the pawl 9 pivots from the position shown in FIG. 3 to the position shown in FIG. 2 about the pivot axis 15, which is parallel to the axis of rotation 14 extends.
  • the pawl 9 then runs with its front against the stop 8 and rests with its rear against the crosspiece 13 of the cage formed by the two flanges 11. The winding shaft is securely blocked in this position.
  • the weighting tube 1 is slightly pulled down again so that the pawl can move about its pivot axis 15 into the immersed position shown in FIG.
  • the pawl 9 remains in the submerged position, i.e. it does not run against the stop 8.
  • the stop 8, against which the pawl 9 runs for locking, lies with its stop surface above the axis of rotation 14.
  • the pawl 9 can only move within a predetermined pivoting angle.
  • the pivot path in the direction of the axis of rotation 14 is limited in the illustrated embodiment by the bearing pin 16 serving as a stop.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
EP88117180A 1987-11-09 1988-10-15 Rollo, insbesondere Bildwandrollo Expired - Lifetime EP0315793B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3738003 1987-11-09
DE19873738003 DE3738003A1 (de) 1987-11-09 1987-11-09 Rollo, insbesondere bildwandrollo

Publications (3)

Publication Number Publication Date
EP0315793A2 EP0315793A2 (de) 1989-05-17
EP0315793A3 EP0315793A3 (en) 1990-06-13
EP0315793B1 true EP0315793B1 (de) 1992-03-04

Family

ID=6340114

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88117180A Expired - Lifetime EP0315793B1 (de) 1987-11-09 1988-10-15 Rollo, insbesondere Bildwandrollo

Country Status (2)

Country Link
EP (1) EP0315793B1 (enrdf_load_stackoverflow)
DE (2) DE3738003A1 (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19509940C2 (de) * 1995-03-18 1997-09-11 Benthin Ag Rollvorhang mit Endlagenbegrenzung
US20120168099A1 (en) 2011-01-04 2012-07-05 Richard Anderson Lock mechanism for a covering for architectural openings

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1411865A (en) * 1921-01-06 1922-04-04 Moors Automatic Shade Fixtures Shade-roller safety catch
US2122670A (en) * 1936-12-15 1938-07-05 Shade Check Inc Shade roller check
DE1133864B (de) * 1954-05-08 1962-07-26 Haglund & Soener A B Rollvorhangstange
DE2309225A1 (de) * 1973-02-24 1974-08-29 Neukirchen W U H Vorrichtung an wellen von rollaeden u. dgl
DE8714900U1 (de) * 1987-11-09 1988-04-28 MW Verwaltungsgesellschaft mbH, 4792 Bad Lippspringe Rollo, insbesondere Bildwandrollo

Also Published As

Publication number Publication date
DE3738003C2 (enrdf_load_stackoverflow) 1991-11-21
DE3868853D1 (de) 1992-04-09
EP0315793A3 (en) 1990-06-13
EP0315793A2 (de) 1989-05-17
DE3738003A1 (de) 1989-05-24

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