WO1984003535A1 - Dispositif de blocage d'une corde - Google Patents

Dispositif de blocage d'une corde Download PDF

Info

Publication number
WO1984003535A1
WO1984003535A1 PCT/SE1984/000038 SE8400038W WO8403535A1 WO 1984003535 A1 WO1984003535 A1 WO 1984003535A1 SE 8400038 W SE8400038 W SE 8400038W WO 8403535 A1 WO8403535 A1 WO 8403535A1
Authority
WO
WIPO (PCT)
Prior art keywords
locking
cord
locking arm
holder
arm
Prior art date
Application number
PCT/SE1984/000038
Other languages
English (en)
Inventor
Torsten Swensson
Original Assignee
Torsten Swensson
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 Torsten Swensson filed Critical Torsten Swensson
Priority to DE8484900768T priority Critical patent/DE3467388D1/de
Priority to AT84900768T priority patent/ATE30757T1/de
Priority to AU25761/84A priority patent/AU2576184A/en
Publication of WO1984003535A1 publication Critical patent/WO1984003535A1/fr

Links

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
    • E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
    • E06B9/30—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable
    • E06B9/32—Operating, guiding, or securing devices therefor
    • E06B9/324—Cord-locks
    • 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
    • E06B9/78—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor for direct manual operation, e.g. by tassels, by handles

Definitions

  • This invention refers to a locking device for cords preferably but not exclusively intended to lock pulling cords for roller blinds, Venetian blinds and the like.
  • the primary object of the invention is to provide a locking device with improved locking of the cord.
  • a further object of the invention is to provide a locking device, substantially comprising a holder and a locking arm, pivotable in relation to said holder, wherein these parts may be easily and rapidly mounted respectively dismantled.
  • Fig. 1 is a side view, partly broken, of the novel cord locking device
  • Fig. 2 is a cross section through the cord locking device as shown in fig. 1 and
  • Fig. 3 is an end view of a locking arm of the device.
  • Fig. 4 is a side view, partly broken, of a modified cord locking device
  • Fig. 5 finally is a side view, partly broken, of a further modified cord locking device.
  • numeral 1 generally designates the holder of the locking device.
  • This holder has bottom wall 2, which is provided with countersunk holes 3 for fastening screws such that the holder can be secured to a support.
  • Projecting from the bottom wall are two spaced flanges 4a, 4b. The space between the flanges 4a, 4b is denoted 5 in the drawings.
  • each of the flanges 4a, 4b is provided a hole 6 for a pivot shaft,not shown.
  • the holes are of course coaxial.
  • the locking device further includes a locking arm, generally designated as 10, which has a portion 11 formed as a locking lug, an operating portion 12, two annular projections 14a, 14b, which as seen in figure 3 surround the pivot hole 13 of the locking arm, further a stud 15 extending from the operating portion 12 and preferably having a bead 15, intended to hold with friction one end of the spring 9, and finally a tongue 16 which terminates in a friction portion 17.
  • a locking arm generally designated as 10
  • 10 has a portion 11 formed as a locking lug, an operating portion 12, two annular projections 14a, 14b, which as seen in figure 3 surround the pivot hole 13 of the locking arm, further a stud 15 extending from the operating portion 12 and preferably having a bead 15, intended to hold with friction one end of the spring 9, and finally a tongue 16 which terminates in a friction portion 17.
  • the bottom surface of the space 5 is designated as 18 and the cord 19 is intended to be pressed against sard bottom surface by the locking arm.
  • the width respectively the depth of the recesses 7a, 7b is dimensioned in such a manner relative to the dimension of the annular projections 14a, 14b, that said projections, when inserted into the recesses 7a, 7b and in contact with the bottom of said recesses, will keep the locking arm positioned in such a manner relative to the holder that the holes 6 in the flanges of the holder and the hole 13 in the locking arm will be concentric which means that the pivot shaft (not shown) can be inserted without any kind of adjustment and independent of the angular position of the locking arm relative to the holder. It is thus very easy for any person to assemble the locking device after a disassemblance thereof.
  • the locking arm as well as the holder is preferably made from a suit able plastic material.
  • the device just described works in the manner that the locking arm by means of the spring 9 normally is in contact with the cord 19 and thus clamps the cord to surface 18 by means of its locking lug 11.
  • the locking arm In order to release the cord for movement the locking arm is depressed by pressing a finger against the operating portion 12 thereof. Since in most cases, as in roller blinds, the cord is attached to an object which will give to the cord an accelerating movement to the left in figure 1 it is of importance that this rapid movement can be retarded and for this purpose the locking arm is provided with a tongue 16 which by means of a friction portion 17 comes into contact with the cord when the locking arm is fully depressed. This retardation occurs softly and successively since the tongue is obliquely directed, possibly somewhat resilient and located at a relatively big distance from the pivot center of the locking arm.
  • the locking device illustrated in fig. 4 eliminates these drawbacks at the same time as it makes it possible to use a very weak spring, which minimizes the wear.
  • This first, grasping portion has its point situated at such a distance from the pivot center of the locking arm that the grasping portion in question should not be able to lock the cord since it would not clamp it against the bottom 18 of the holder but instead just pass the locking position and then completely free the cord.
  • the locking arm further has a second, locking portion 21, which is located at such an angular distance from the first, grasping portion 20, that said second, locking portion will not come in-to contact with the cord 3 until the first, grasping portion has started to be carried by the cord but before it has been it.
  • the design is preferably such that the second, locking portion will come into contact with the cord just when the first, grasping portion is passing through the locking position.
  • the second, locking portion 21 can have the shape of a cam surface with a lowermost point located at a certain distance from the pivot center X and a highest point 21b, located at a somewhat bigger distance from the pivot center X than the lowermost point 21a.
  • the difference in distance between on one hand the turning or pivot center X and the lowermost point 21a and the turning or pivot center X and the highest point 21b is however minor, which means that said second, locking portion will act upon the cord along a relatively large area.
  • This surface can of course be blasted or serrated but it has been proved that such a treatment in most cases is unnecessary since the locking portion owing to its position in close vicinity to a normal through the pivot center X will be pressed against the cord without any noticable slip. Since no slipping action is noticed the wear upon the locking portion 21 will be very small and it has been proved that a locking device with a locking arm according to fig. 4 is able to hold very heavy curtains and acts very distinct and with a very weak spping.
  • the locking device is not overloaded. Such an overloading can for instance occur when a curtain is forced downards instead of allowed to go down by means of its own weight and the weight of a rod. Such a maltreatment of a roller blind with pulling cord would mean damages to one or several parts of the blind.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Blinds (AREA)
  • Clamps And Clips (AREA)
  • Curtains And Furnishings For Windows Or Doors (AREA)

Abstract

Dispositif de blocage destiné à serrer une corde de traction d'un store à rouleaux, d'un store vénitien ou analogue, et comprenant un support (1) possédant deux rebords (4), entre lesquels est monté de manière pivotante un bras de blocage (10). Ce dernier possède une première partie (20) qui est pointue et une deuxième partie (21) disposée à un certain angle par rapport à la première partie et présentant une surface de came. La première partie (20) est disposée à une distance telle du centre de pivot du bras de blocage qu'elle peut traverser la position de blocage du dispositif de blocage portant la corde (19) sans la bloquer. La deuxième partie (21) est toutefois disposée à une distance telle du centre de pivot qu'elle ne peut traverser la position de blocage, ou qu'elle ne peut faire ceci que lorsqu'on lui applique une force considérable. Le bras de blocage possède un trou pour un arbre et un bourrelet annulaire est disposé à chaque extrémité autour du trou. Dans les rebords (4) du support sont aménagées des rainures (7) qu'épousent les bourrelets annulaires.
PCT/SE1984/000038 1983-03-04 1984-02-07 Dispositif de blocage d'une corde WO1984003535A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE8484900768T DE3467388D1 (en) 1983-03-04 1984-02-07 Cord locking device
AT84900768T ATE30757T1 (de) 1983-03-04 1984-02-07 Seilblockiervorrichtung.
AU25761/84A AU2576184A (en) 1983-03-04 1984-02-07 Linlasanordning

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8301206A SE452783B (sv) 1983-03-04 1983-03-04 Anordning vid lasorgan for linor foretredesvis draglinor for rullgardiner och liknande

Publications (1)

Publication Number Publication Date
WO1984003535A1 true WO1984003535A1 (fr) 1984-09-13

Family

ID=20350267

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1984/000038 WO1984003535A1 (fr) 1983-03-04 1984-02-07 Dispositif de blocage d'une corde

Country Status (4)

Country Link
EP (1) EP0148185B1 (fr)
DE (1) DE3467388D1 (fr)
SE (1) SE452783B (fr)
WO (1) WO1984003535A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994019573A1 (fr) * 1993-02-26 1994-09-01 Israel Karmel Systeme d'actionnement de store
EP1350916A3 (fr) * 2002-04-04 2004-09-29 Sps (Holdings) Ltd. Dispositif de tension pour une fermeture de sûreté

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE357665B (fr) * 1968-03-21 1973-07-09 Bengtsson Sigurd W
WO1982000849A1 (fr) * 1980-08-29 1982-03-18 T Swensson Dispositif de verrouillage et de guidage facilement demontable pour des cordes, de preference des cordes de traction pour des stores a rouleau
SE427203B (sv) * 1979-09-04 1983-03-14 Enar Von Knorring Sperrorgan for draglinor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE357665B (fr) * 1968-03-21 1973-07-09 Bengtsson Sigurd W
SE427203B (sv) * 1979-09-04 1983-03-14 Enar Von Knorring Sperrorgan for draglinor
WO1982000849A1 (fr) * 1980-08-29 1982-03-18 T Swensson Dispositif de verrouillage et de guidage facilement demontable pour des cordes, de preference des cordes de traction pour des stores a rouleau

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994019573A1 (fr) * 1993-02-26 1994-09-01 Israel Karmel Systeme d'actionnement de store
EP1350916A3 (fr) * 2002-04-04 2004-09-29 Sps (Holdings) Ltd. Dispositif de tension pour une fermeture de sûreté

Also Published As

Publication number Publication date
SE452783B (sv) 1987-12-14
EP0148185A1 (fr) 1985-07-17
EP0148185B1 (fr) 1987-11-11
DE3467388D1 (en) 1987-12-17
SE8301206L (sv) 1984-09-05
SE8301206D0 (sv) 1983-03-04

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