EP0120567A2 - Kupplung für einen vertikalen Lamellenvorhang - Google Patents

Kupplung für einen vertikalen Lamellenvorhang Download PDF

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Publication number
EP0120567A2
EP0120567A2 EP84300637A EP84300637A EP0120567A2 EP 0120567 A2 EP0120567 A2 EP 0120567A2 EP 84300637 A EP84300637 A EP 84300637A EP 84300637 A EP84300637 A EP 84300637A EP 0120567 A2 EP0120567 A2 EP 0120567A2
Authority
EP
European Patent Office
Prior art keywords
sleeve
inner sleeve
tongue
outer sleeve
clutch
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
EP84300637A
Other languages
English (en)
French (fr)
Other versions
EP0120567A3 (en
EP0120567B1 (de
Inventor
Herman Oskam
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 BV
Original Assignee
Hunter Douglas Industries BV
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
Priority claimed from GB08308061A external-priority patent/GB2137269B/en
Priority claimed from GB08321980A external-priority patent/GB2145141A/en
Application filed by Hunter Douglas Industries BV filed Critical Hunter Douglas Industries BV
Publication of EP0120567A2 publication Critical patent/EP0120567A2/de
Publication of EP0120567A3 publication Critical patent/EP0120567A3/en
Application granted granted Critical
Publication of EP0120567B1 publication Critical patent/EP0120567B1/de
Expired 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
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • E06B9/26—Lamellar or like blinds, e.g. venetian blinds
    • E06B9/36—Lamellar or like blinds, e.g. venetian blinds with vertical lamellae ; Supporting rails therefor
    • E06B9/362—Travellers; Lamellae suspension stems
    • E06B9/364—Operating mechanisms therein
    • 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
    • E06B9/26—Lamellar or like blinds, e.g. venetian blinds
    • E06B9/36—Lamellar or like blinds, e.g. venetian blinds with vertical lamellae ; Supporting rails therefor
    • E06B9/367—Lamellae suspensions ; Bottom weights; Bottom guides

Definitions

  • the present invention relates to a clutch for a vertical louvre blind.
  • Such blinds include a headrail, travellers which can be moved along the headrail and hooks rotatably mounted in each traveller from which the louvres of the blind are suspended.
  • the purpose of the traveller is twofold. It allows the louvres to be moved back, rather in the manner of a curtain, from an initial position in which the louvres all overlie a window.
  • the traveller has in it a mechanism for rotating the louvres so that the angle can be altered. It is advantageous for all the louvres to be parallel to one another and it is a conventional arrangement for each traveller to include a rotatable worm which engages with a worm wheel forming part of, or connected to the louvre hook.
  • the worms are rotated by a common tilt rod which passes through all the travellers and is usually provided with longitudinal grooves which are engaged by keys of a rotatable sleeve which drives the worm, usually through a clutch.
  • Two forms of clutch have been proposed, one in which teeth are provided in radial walls, to provide a face clutch, and others in which a tooth or teeth engages or engage radial splines on an outer sleeve. None of the present constructions is fully satisfactory insofar as they are rather cumbersome and relatively expensive to manufacture.
  • a clutch for a vertical.louvre blind traveller comprising an inner sleeve, at least one key on the inner surface of the inner sleeve engageable in a groove in a tilt rod which passes through said sleeve, whereby the sleeve may be rotated thereby, at least one pair of slots each defining therebetween an axially extending tongue on said inner sleeve, an outer sleeve surrounding said inner sleeve, a worm forming element on the outer surface of the outer sleeve, a plurality of splines on the inner surface of said outer sleeve and means on the outer surface of the tongue engageable with the splines to cause rotation of the outer sleeve as the inner sleeve rotates, the or each tongue being at a circumferential location on the inner sleeve corresponding to a groove in said tilt rod, whereby the or each tongue can flex resilient
  • the corresponding groove can be a specially formed groove or a groove designed to receive said key, to provide the drive connection between the tilt rod and the inner sleeve.
  • the key or keys would be mounted at the same circumferential location as the tongue or tongues.
  • the tongues can readily flex into the corresponding groove or grooves of the tilt rod and can thus provide plenty of space for flexural movement.
  • the inner sleeve can be constructed so that it can be very thin indeed, making the whole assembly compact.
  • the pair or pairs of slots extend from one axial end of the sleeve, whereby the or each tongue is mounted in cantilever fashion with respect to the remainder of the inner sleeve. Again this makes sure of a positive action with very light components.
  • the clutch further comprises a housing having opposite side walls with aligned openings formed therein and end portions on the inner sleeve engageable in said openings, so as to be rotatable therein, the outer sleeve being mounted within the housing, a radially outwardly extending annular, or part-annular, abutment formed on the outer surface of the inner sleeve at a location spaced from one end, one side of said abutment engaging the inner surface of one of said opposite walls of the housing and one end of the outer sleeve engaging the other side of said abutment.
  • the position of the outer sleeve with the worm mounted thereon can be accurately controlled in a simple manner to provide a straight-forward bearing during the normal operation of the blind.
  • the tongue or tongues extend to a point which is not axially beyond the location of the annular abutment so they do not reach beyond the end of the outer sleeve with engages the abutment.
  • the or each tongue may be provided with a radially outwardly extending tooth to engage in the splines to give good positive gripping action thereon.
  • Each traveller 10 includes side walls 12 with aligned openings 13 therein. Movement of the right hand of the carriers, as illustrated in the drawings, is effected by a pull cord 14 and movement to the right of the other traveller is effected by a ball chain 15. Each traveller has associated therewith a louvre hook 16 associated with a worm wheel 17 having upstanding teeth 18.
  • the lefthand traveller illustrated in Figure 1 is shown as having the clutch mechanism of the present invention in an exploded state.
  • This clutch includes an inner sleeve 20 which is a sliding fit over a tilt rod 21 which is provided with three equi-angularly spaced longitudinal grooves 22.
  • the inner sleeve 20 has three equi-angularly spaced keys 23 fitting into the grooves, whereby rotation of the tilt rod 21 will cause rotation of the sleeve 20.
  • the outer surface of the sleeve is provided, at a location spaced a short distance from the end 24, with three part annular abutments 28.
  • the length of the tongue 26 is such as not to extend beyond the abutment 28.
  • an outer sleeve 30 Surrounding the inner sleeve 20 is an outer sleeve 30 provided on its outer surface with a worm 31 and on its inner surface with longitudinally extending splines 32.
  • the whole clutch assembly can be pushed into the housing (by splaying of the side walls 12 thereof) so that the ends of the inner sleeve engaged in the openings 13 and the side walls 12 of the housing.
  • the outer surface of the abutment 28 engages against the inner surface 35 of one side wall 12.
  • the length of the outer sleeve 30 is such that the other side of the outer sleeve engages against the inner surface 36 of the other side wall 12. In this way the inner and outer sleeves are both retained axially within the housing and are free to rotate.
  • the circumferential position of the keys 23 is the same as the circumferential position of the tongues 26, so that the tongues are located immediately above the grooves 22 in the tilt rod 21 as can be seen in Figure 3.
  • the teeth 27 on the tongues 26 engage in the spline 32 on the inner surface of the outer sleeve 30 so that the inner and outer sleeves will rotate together. Should the outer sleeve be arrested for any reason, then the tongue 26 can flex inwardly and allow slippage of the teeth 26 with respect to the splines 27.
  • the positioning of the tongues over the grooves 22 greatly facilitates this operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Blinds (AREA)
  • Mechanical Operated Clutches (AREA)
EP19840300637 1983-03-24 1984-02-01 Kupplung für einen vertikalen Lamellenvorhang Expired EP0120567B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB08308061A GB2137269B (en) 1983-03-24 1983-03-24 Verticle louvre blind
GB8308061 1983-03-24
GB8321980 1983-08-16
GB08321980A GB2145141A (en) 1983-08-16 1983-08-16 Clutch for a vertical louvre blind

Publications (3)

Publication Number Publication Date
EP0120567A2 true EP0120567A2 (de) 1984-10-03
EP0120567A3 EP0120567A3 (en) 1985-03-27
EP0120567B1 EP0120567B1 (de) 1986-11-05

Family

ID=26285599

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840300637 Expired EP0120567B1 (de) 1983-03-24 1984-02-01 Kupplung für einen vertikalen Lamellenvorhang

Country Status (2)

Country Link
EP (1) EP0120567B1 (de)
DE (1) DE3461210D1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0349998A1 (de) * 1988-07-05 1990-01-10 K. Bratschi, Silent Gliss Streifenvorhang
EP0352410A2 (de) * 1988-07-29 1990-01-31 bautex Adolf Stöver Söhne KG Schneckenantrieb zur Winkelpositionseinstellung von Vertikallamellenjalousien
EP0562711A2 (de) * 1992-02-24 1993-09-29 Hunter Douglas Industries B.V. Vertikaler Lamellenvorhang

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2104949A (en) * 1981-08-22 1983-03-16 Haller Gmbh And Co Kg Berthold Shutter blind of the type having vertically arranged shutters

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2104949A (en) * 1981-08-22 1983-03-16 Haller Gmbh And Co Kg Berthold Shutter blind of the type having vertically arranged shutters

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0349998A1 (de) * 1988-07-05 1990-01-10 K. Bratschi, Silent Gliss Streifenvorhang
EP0352410A2 (de) * 1988-07-29 1990-01-31 bautex Adolf Stöver Söhne KG Schneckenantrieb zur Winkelpositionseinstellung von Vertikallamellenjalousien
EP0352410A3 (de) * 1988-07-29 1991-07-24 bautex Adolf Stöver Söhne KG Schneckenantrieb zur Winkelpositionseinstellung von Vertikallamellenjalousien
EP0562711A2 (de) * 1992-02-24 1993-09-29 Hunter Douglas Industries B.V. Vertikaler Lamellenvorhang
EP0562711A3 (en) * 1992-02-24 1993-12-08 Hunter Douglas Ind Bv Vertical louver blind

Also Published As

Publication number Publication date
EP0120567A3 (en) 1985-03-27
EP0120567B1 (de) 1986-11-05
DE3461210D1 (en) 1986-12-11

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