EP2126267B1 - Steckverbindung in einem aufrollbaren Behang zwischen der Wickelwelle und deren Kopfstück - Google Patents

Steckverbindung in einem aufrollbaren Behang zwischen der Wickelwelle und deren Kopfstück Download PDF

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Publication number
EP2126267B1
EP2126267B1 EP07817851.4A EP07817851A EP2126267B1 EP 2126267 B1 EP2126267 B1 EP 2126267B1 EP 07817851 A EP07817851 A EP 07817851A EP 2126267 B1 EP2126267 B1 EP 2126267B1
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EP
European Patent Office
Prior art keywords
tube
insert
ribs
roller blind
grooves
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.)
Active
Application number
EP07817851.4A
Other languages
English (en)
French (fr)
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EP2126267A4 (de
EP2126267A1 (de
Inventor
Kim Rysholt
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.)
Hunter Douglas Industries Switzerland GmbH
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Hunter Douglas Industries Switzerland GmbH
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Publication date
Application filed by Hunter Douglas Industries Switzerland GmbH filed Critical Hunter Douglas Industries Switzerland GmbH
Publication of EP2126267A1 publication Critical patent/EP2126267A1/de
Publication of EP2126267A4 publication Critical patent/EP2126267A4/de
Application granted granted Critical
Publication of EP2126267B1 publication Critical patent/EP2126267B1/de
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Anticipated expiration legal-status Critical

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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
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • E06B9/40—Roller blinds
    • E06B9/42—Parts or details of roller blinds, e.g. suspension devices, blind boxes
    • E06B9/50—Bearings specially adapted therefor

Definitions

  • the invention relates to the mechanical connection between the bearing insert and the roller blind tube in a roller blind.
  • roller blind rod was made of wood, and the bearing insert was simply a round nail placed centrally in the wood, which was solid and rod-shaped at one end.
  • the bearing insert became a plug with a cylindrical metal insert, said plug being pushed or hammered into position for a compression fit.
  • roller blind mechanisms have become more sophisticated, more and more of a mechanical nature is placed inside the tube and in the bearing insert, and it is no longer satisfactory that a plug is pressed into a tube, because it becomes impossible to separate the two sensibly afterwards.
  • Parts that are suitable for this purpose are indeed manufactured, but the fit obtained when the parts are joined is entirely dependent on the manufacturing tolerances of the parts.
  • the worst cases are the extremes of the tolerances: a tube with an inside diameter that is too small trying to cooperate with a plug that is average, or a plug with an outside diameter that is too large trying to cooperate with an average value inside diameter of the tube. In both cases, the joint will be too tight.
  • an inside diameter of the tube at the maximum limit trying to cooperate with an outside diameter of the plug at the minimum limit will not be a joint at all - it will fall apart.
  • close tolerances are expensive to obtain in manufacture, and in particular when one part is made of a polymer, the cost becomes unrealistic for a roller blind component.
  • US Patent 3,854,517 describes a bearing insert that cooperates with a roller blind tube by means of grooves that engage ribs on the inside of the roller blind tube. These is no mention of frictional engagement, and the construction does not need this feature. It is the purpose of the invention to provide a mechanical connection between the bearing insert and the roller blind tube in a roller blind in which the influence of manufacturing tolerances is minimized. This is obtained in a construction according to the present claim 1.
  • the insert is provided with angularly disposed radial and longitudinal ribs that cooperate with the inner surface of the roller blind tube, said inner surface being provided with longitudinal grooves at an angular spacing that is identical to the angular spacing of said ribs.
  • Such longitudinal grooves may be manufactured by extrusion, if the tube is made of aluminium, or they may be shaped by reaming from one end of the tube, because they need not have a length that exceeds the length of the ribs. In that case even a rolled and welded steel tube may be used.
  • the insert as well as the inside of the tube are provided with indexing means that ensure that either the inside cylindrical surface of the tube or the bottom of the longitudinal grooves are reliably engaged.
  • indexing means has been used, although “registration means” might equally indicate the essence of this feature, namely that a given angular relationship between the roller blind tube and the insert is reliably obtained.
  • the indexing means of the tube consist of at least one pair of internal longitudinal ribs in the tube, with a distance such that they may be straddled by two consecutive ribs on the insert, while one of the grooves is disposed between said ribs.
  • the indexing means of the tube consist of two inwards-facing dimple-like structures, with a distance such that they may be straddled by two consecutive ribs on the insert (1), while one of said grooves is disposed between said dimple-like structures.
  • Dimples would be simply formed by pressing radially inwards in a tubular material that is otherwise smooth, apart from the grooves.
  • either the ribs or the grooves define a slightly conical surface. This enables a simpler evaluation of the insertion and extraction force to be expected, because the axial penetration without appreciable force will be to a depth that is dependent on the tightness of the fit. If the fit is too tight, then it is easy to retract the insert before it is caught and perform the angular displacement to the grooves.
  • the conical surfaces provide a wedge-like effect.
  • Fig. 1 is shown an insert 1 inside a roller blind tube 2.
  • the insert is made in a plastic material and the roller blind tube is extruded in an aluminium alloy.
  • the insert 1 is provided with a number of ribs 3 that center the insert inside the tube 2 at the radius R and create friction to the inside surface of the tube, i.e. they provide the retaining force against being pulled out.
  • Fig. 2 is seen an enlargement of this fitting of the insert inside the tube, and the ribs 3' and 3" are shown straddling a structure 2', 2" formed on the inside of the tube.This structure is a set of longitudinal ribs that between them define a space 2s. From inspecting Figs.
  • Fig. 3 shows how a greater clearance between the insert 1 and the roller blind tube 2 is obtained, but it is more clearly shown in Fig. 4 .
  • the inside of the roller blind tube has been provided with longitudinal grooves 4 that locally increase the inside radius of the roller blind tube to R' at angular intervals that correspond to the angular distance between the external ribs 3 on the insert 1.
  • the insert is rotated a half division with respect to the situation described above, so that the rib 3" now engages the space 2s between the ribs 2', 2".
  • the local radius R' also applies to this space 2s.
  • the ribs 3 do not reach the bottom of the grooves 4, which in practice would lead the operator to prefer the previous situation.
  • Fig. 5 is shown an even greater enlargement in order to illustrate the two radii obtained in the same roller blind tube 2.
  • the provision of the choice of two radii is not necessary along the whole length of the roller blind tube, but only near one or both ends. For this reason the grooves may not need to be created by extrusion, but they may be made by other methods known in the trade, such as by a reaming or milling process near the ends.
  • the internal rib structure 2', 2" also does not need to extend the whole length of the tube, because the purpose is a locking against rotation. That may be obtained by the provision of a dimple-like structure near one or both ends of the roller blind tube.
  • the end of a roller blind tube has an insert with a bearing arbor.
  • the diameter tolerances on roller blind tubes and inserts are such that the operator meets very variable forces in pressing it in.
  • there may be provided a choice of diameters by providing the insert with longitudinal ribs that cooperate either with the original inside surface of the roller blind tube, which is normal, or with longitudinal grooves having slightly increased radius with respect to the axis of the roller blind tube.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Claims (7)

  1. Mechanische Verbindung zwischen einem Lagereinsatz (1) und einem Rollladenrohr (2) in einem Rollladen, wobei der Einsatz (1) mit winklig angeordneten radialen und longitudinalen Rippen (3, 3', 3") versehen ist, und wobei die innere Fläche des Rollladenrohrs (2) mit Längsnuten (4) in einem Winkelabstand versehen ist, der identisch zu dem Winkelabstand der Rippen (3, 3', 3") ist,
    dadurch gekennzeichnet, dass
    die Längsnuten (4) einen bezüglich der Achse des Rollladenrohrs leicht vergrößerten Radius aufweisen, wodurch eine Auswahl von Durchmessern bereitgestellt wird, wobei die Rippen (3, 3', 3") an dem Einsatz (1) in Abhängigkeit von den Durchmessertoleranzen an dem Rollladenrohr (2) und dem Einsatz (1), entweder mit der ursprünglichen inneren Fläche des Rollladenrohrs oder mit den Nuten (4) reibschlüssig zusammenwirken können.
  2. Mechanische Verbindung nach Anspruch 1, dadurch gekennzeichnet, dass
    der Einsatz (1) wie auch das Innere des Rohrs (2) mit Ausrichtmitteln (2', 2", 3', 3") versehen sind, die sicherstellen, dass entweder die innere zylindrische Fläche des Rohrs oder der Boden der Längsnuten (4) zuverlässig mit den Rippen (3, 3', 3") in Eingriff kommt.
  3. Mechanische Verbindung nach Anspruch 2, dadurch gekennzeichnet, dass
    die Ausrichtmittel des Rohrs aus zumindest einem Paar innerer Längsrippen (2', 2") in dem Rohr mit einem Abstand, sodass zwei aufeinander folgende Rippen (3', 3") an dem Einsatz (1) beidseits von ihnen liegen, bestehen, wobei eine der Nuten in dem Boden des Raumes (2s) zwischen den Rippen angeordnet ist.
  4. Mechanische Verbindung nach Anspruch 2, dadurch gekennzeichnet, dass
    die Ausrichtmittel des Rohrs aus zwei nach innen gerichteten muldenartigen Strukturen mit einem Abstand, sodass zwei aufeinander folgende Rippen (3', 3") an dem Einsatz (1) beidseits von ihnen liegen, bestehen, wobei eine der Nuten zwischen den muldenartigen Strukturen angeordnet ist.
  5. Mechanische Verbindung nach Anspruch 1, dadurch gekennzeichnet, dass
    die Rippen an dem Einsatz eine leicht kegelige Fläche definieren, wobei der kleinste Durchmesser zuerst einzubringen ist.
  6. Mechanische Verbindung nach Anspruch 1, dadurch gekennzeichnet, dass
    die Nuten (4) zumindest entlang einer Länge im Inneren des Rollladenrohrs, die der Längsausdehnung des Einsatzes (1) entspricht, eine leicht kegelige Fläche mit einem Scheitelpunkt innerhalb des Rollladenrohrs definieren.
  7. Verwendung einer mechanischen Verbindung nach Anspruch 2, dadurch gekennzeichnet, dass
    in einem ersten Installationsschritt, der Einsatz (1) zu einer Rippe (3") gegenüber dem Raum (2s) zwischen zwei aufeinanderfolgenden Rippen (2', 2") ausgerichtet und axial in das Rohr (2) gedrückt wird, bis er durch Reibung und an der vorbestimmten axialen Position innerhalb des Rohrs (2) gehalten wird,
    andernfalls,
    in einem zweiten Installationsschritt der Einsatz (1) wieder zurückgezogen wird, und
    er in einem dritten Installationsschritt gedreht wird, um zu einem Paar von Rippen (3', 3 ") ausgerichtet zu werden, welche beidseits der Rippen (2', 2"), die den Raum (2s) umschließen, liegen und gegen eine zunehmende Reibung axial in das Rohr (2) gedrückt wird, bis der Einsatz (1) an der vorbestimmten axialen Position innerhalb des Rohrs (2) ist.
EP07817851.4A 2006-10-26 2007-10-25 Steckverbindung in einem aufrollbaren Behang zwischen der Wickelwelle und deren Kopfstück Active EP2126267B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA200601390 2006-10-26
PCT/DK2007/000455 WO2008049431A1 (en) 2006-10-26 2007-10-25 A bearing insert fitting for roller blinds

Publications (3)

Publication Number Publication Date
EP2126267A1 EP2126267A1 (de) 2009-12-02
EP2126267A4 EP2126267A4 (de) 2013-04-24
EP2126267B1 true EP2126267B1 (de) 2015-02-11

Family

ID=39324156

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07817851.4A Active EP2126267B1 (de) 2006-10-26 2007-10-25 Steckverbindung in einem aufrollbaren Behang zwischen der Wickelwelle und deren Kopfstück

Country Status (3)

Country Link
EP (1) EP2126267B1 (de)
DK (1) DK2126267T3 (de)
WO (1) WO2008049431A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102896331B (zh) * 2012-10-23 2015-04-29 德州普利森机床有限公司 轴承双定位用隔套

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3854517A (en) * 1972-05-17 1974-12-17 I Nakamura Roll blind
US6540004B2 (en) * 2001-08-23 2003-04-01 Yuh San Corp. Ltd. Fixing seat structure of rolling curtain
EP1809849B1 (de) * 2004-10-22 2016-12-07 Damorgold Pty Ltd Verbinder für rollladenanordnung
FR2877689B1 (fr) * 2004-11-10 2008-08-15 Zurfluh Feller Sa Dispositif obturateur pour coffre de volet roulant, avec un systeme polyvalent de support et/ou fixation des axe et dispositif de manoeuvre du volet roulant
WO2006102894A1 (en) * 2005-03-29 2006-10-05 Faber A/S A device for fine adjustment of roller blinds

Also Published As

Publication number Publication date
EP2126267A4 (de) 2013-04-24
DK2126267T3 (en) 2015-03-30
WO2008049431A1 (en) 2008-05-02
EP2126267A1 (de) 2009-12-02

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