EP0322354B1 - Store à lamelles - Google Patents

Store à lamelles Download PDF

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Publication number
EP0322354B1
EP0322354B1 EP88810811A EP88810811A EP0322354B1 EP 0322354 B1 EP0322354 B1 EP 0322354B1 EP 88810811 A EP88810811 A EP 88810811A EP 88810811 A EP88810811 A EP 88810811A EP 0322354 B1 EP0322354 B1 EP 0322354B1
Authority
EP
European Patent Office
Prior art keywords
carriage
blind according
lamellar blind
lamellar
spring
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
EP88810811A
Other languages
German (de)
English (en)
Other versions
EP0322354A1 (fr
Inventor
Hugo Eisenring
Paul Frei
Oskar Wymann
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.)
Griesser AG
Original Assignee
Griesser AG
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 Griesser AG filed Critical Griesser AG
Priority to AT88810811T priority Critical patent/ATE65825T1/de
Publication of EP0322354A1 publication Critical patent/EP0322354A1/fr
Application granted granted Critical
Publication of EP0322354B1 publication Critical patent/EP0322354B1/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
    • E06B9/24—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
    • E06B9/322—Details of operating devices, e.g. pulleys, brakes, spring drums, drives

Definitions

  • the present invention relates to a venetian blind, the slats of which are guided laterally on transverse levers with an end pin in the longitudinal slot of a side guide.
  • Venetian blinds of the type mentioned are e.g. known from DE-A-3037701.
  • Venetian blinds of the type mentioned are usually made entirely of metal and are particularly suitable as external blinds, since their pulling and supporting members are protected in side housings and there are no textile cords for adjusting the slats.
  • External venetian blinds which are inevitably guided both upwards and downwards by tension and support elements, do not have an end rail that forms a lower end.
  • a Roman blind is known, the lowest slat of which is attached with its two ends to carriages sliding in the lateral guide profiles via slot-shaped bearings.
  • the lowest slat can only be displaced vertically in the car by a modest amount of a few millimeters, but cannot be detached from the car when it encounters an obstacle. This can damage the slat.
  • a stroke safety device is also known from the same publication, which consists of a lever which is pivotally attached to the carriage and which jams in the guideway when the bottom slat is manually raised and prevents the store from being pushed upwards. The lever is kept away from the guideway during normal lifting and lowering of the store by the elevator belt, the end of which is attached to the lever, as long as the elevator belt is taut.
  • the lever If the lowest slat is raised by an obstacle, the lever is swiveled and clamps the slat on one side.
  • the lowest and possibly also the slats above are inclined and can suffer damage. The operator does not perceive the impact of the lowermost lamella on an obstacle, since there are no means to transfer it to the crank.
  • the invention seeks to remedy this.
  • the invention solves the problem of creating an external venetian blind in which the slats detach from the pulling element when hitting an obstacle or when it jams in the facade when the blind is lowered and when it is restarted, i.e. automatically engage with it when pulling it up.
  • the carriage according to the invention on external venetian blinds enables the connection between the traction element and the slats to be released in an advantageous and cost-effective manner when an extraordinary resistance occurs when lowering and then by pulling up the traction mechanism to engage again.
  • Another advantage is that the forces acting on the connection between the car and the tension element when the store is pulled up are not taken over by the notching element, but by a fixed stop.
  • the spring used in the drive wheel of the tension element causes increased resistance on the drive crank before the release element triggers a separation from the tension element with the slats. As a result, the operator becomes aware of the obstacle at an early stage and can possibly interrupt the lowering process even before it is released. In addition, this spring causes the end of the lowering process to be indicated by a slow increase in resistance on the crank and a wide switch-off span when using an electric drive.
  • FIG. 1 the most important elements necessary for lifting, lowering and pivoting the slats 5 of the store 7 are shown in the side guide 1 and in the above arranged, housed in a housing 3, for lifting, lowering and pivoting the slats 5.
  • a drive and deflection wheel on a shaft 9 which connects the two side guides 1 11 put on.
  • the drive wheel 11 can be fixedly connected to the shaft 9, or a coupling can be inserted between the shaft 9 and the drive wheel, which allows the shaft 9 to rotate in at least one direction with respect to the drive wheel 11 by, for example, a rotation angle of 100 degrees, without being taken along.
  • a coupling member a helically or helically wound spring 13 can be provided, one end of which is connected to the shaft 9 and the other end of which is connected to the drive wheel 11 (FIG. 7).
  • a tension member 15 in the form of a perforated sheet metal strip, a plastic band or rope or a chain, at one end of a locking member 17 and at the other end a control cam 19 is attached.
  • the holes or recesses 21 in the tension member 15 engage on the periphery of the drive wheel 11 with drivers 23 attached there.
  • the groove 25 is preferably on a side surface; on the side of the control cam 19, the groove 25 is preferably substantially at an angle of approximately 45 degrees in the corner between the rear wall and the side wall of the side guide 1.
  • the housing 3 can of course itself take the lead, particularly if it is made of plastic.
  • the side guide 1 there is also a guide track 29 in which a slide shoe or a slide roller 31, which is attached to a carriage 33 and guides it on a vertically running track.
  • the carriage 33 is arranged parallel to the rear wall of the side guide and consists of a profiled sheet metal or plastic and is suspended from a foldable vertical connection, in the example described a pair of link chains 37, and is latched onto the latching link 17 in the operating state.
  • the link chain pair 37 of known design hangs on a rocker 39 pivotably arranged on the shaft 9.
  • the rocker 39 exists from two arms 41, on which the two chains of the link chain pair 37 are fastened by means of ropes 35.
  • a brake cylinder 43 with a spring 45 wound helically thereon is arranged on the shaft 9 in a rotationally fixed manner.
  • the two ends 47 of the spring 45 project radially outward from the brake cylinder surface (FIG. 3).
  • a driving segment 49 which is part of the rocker 41, projects axially between the two ends 47 into a recess 51 in a step plate 53 mounted on the brake cylinder 43 on the shaft 9.
  • the step plate 53 is rotatably mounted on the brake cylinder 43 and has a in the lower area four levels A, B, C and D and in the upper area another opposite level E.
  • the jumps in the individual stages preferably run radially.
  • the slats 5 are fastened in a conventional manner to the link chains 37 by means of transverse levers 38 and can be pivoted by them or by the rocker 39.
  • the carriage 33 which slides freely or in a vertical path 29 produced by profiling the side guide 1, is connected to the lower-lying transverse lever 38 via a support 46, into which a pin 48 attached to the carriage 33 engages (see FIG. 8). .
  • the pin 48 can slide to compensate for inaccuracies in the construction and mutual changes in position caused by the temperature change of the two side guides 1 attached to the reveal of a window in the recess 75 in the support 46.
  • the locking member 17 consists of an elongated, vertically lying support body 16 connected by rivets, screws, locking means or by gluing to the tension member 15, in the front a spring 18 is inserted.
  • the spring 18 is embedded at its lower end in the body 16 if it is made of plastic, or it is screwed or riveted to it. In its lower region, the spring 18 runs parallel to the tension member 15 and to the side edge 20 of the adjacent carriage 33.
  • Adjoining the lower region is a section 22 which extends at an obtuse angle to the pulling member 15, to which is connected a section 24 which is substantially longer and which is inclined at an acute angle to the pulling member 15, the end 26 of which rests loosely resiliently on the body 16.
  • the two sections 22 and 24 thus form a nose 28 directed towards the carriage 33.
  • a correspondingly shaped plate which is resiliently fastened to the locking member 17 can also be provided.
  • the latching means 17 has a shoulder 30 protruding towards the carriage 33 and into its travel area, which is in contact with a bearing surface 32 attached to the carriage 33.
  • the nose 28 engages in a recess 34 on the side edge 20 of the carriage 33.
  • the recess 34 is dimensioned such that the nose 28 of the spring 18 preferably has room in it with play and the section 22 of which in the latched position lies at a distance from the lower boundary edge 36 of the recess 34.
  • the lowermost cross lever 38 is wrapped around by a spring-loaded connecting strap 73 and can be pressed against the support 46.
  • the connecting tab 73 is slidably supported in a slot-shaped recess 77 in the support 46 and is pressed into the recess 77 by a coil spring 79 or an equivalent means.
  • the connecting tab 73 consists of a stamped or injection-molded part with a central opening which receives the spring 79 on the one hand and the support bolt 42 on the other hand.
  • a flat cam 81 is also attached to the support bolt 42 and is arranged in the case of slats 5 lying essentially horizontally rests on the surface 83 of the support 46 and holds the lamella 5 or the lamella stack in a horizontal position.
  • a pawl 55 can also be pivotally attached to the carriage 33, the free end 57 of which contacts the side guide 1 in an approximately horizontal position.
  • the pawl 55 is pressed by a spring 59 against the upper edge of the locking member 17.
  • FIG. 4 shows the carriage 33 in the locked normal position with the latching member 17 in a position as it is when the slats 5 are pulled up.
  • the weight of the carriage 33 and at most the slats 5 already stacked on it rests on the shoulder 30 of the latching member 17 and is carried by the latter.
  • the spring 18 protrudes into the recess 34 without touching the section 22.
  • the nose 28 of the spring 18 When hitting the obstacle 50, the nose 28 of the spring 18 also only presses the carriage 33 with successively increasing force when the spring 13 described above is inserted in the deflection wheel 11.
  • the resistance required for disengaging the carriage 33 can thus be set both by the characteristic of the spring 13 and by the choice of the contact angle of the section 22 of the spring 18. It does not matter whether the disengagement takes place when the store 7 is almost completely raised and all the slats 5 lie as a package on the bottom slat 5 or whether the store 7 is almost completely lowered (FIG. 5).
  • the carriage 33 slides down either due to its own weight and that of the slats 5 lying thereon, or the latching member 17 is pulled up and snaps back into the recess 34.
  • the engagement takes place without overcoming a large resistance, since the section 24 of the spring 18 lies at an acute angle to the side edge 20 of the carriage 33 and the spring 18 is thereby pressed to the left until its nose 28 can engage in the recess 34 (FIG. 6 ).
  • the lowest slat 5 When the store 7 is opened and closed, the lowest slat 5 is always horizontal and is pressed against the support 46 by the connecting tab 73. As soon as the lowest position of the store 7 is reached, the carriage 75 is guided downward by the pin 48, while the lowest slat cannot move further downward on the extended link chain 37 via the transverse lever 38. As a result of this relative movement between the cross lever 38, to which the lamella 5 is fastened, and the support 46, the coil spring 79 is pressed together in the connecting bracket 73, as a result of which the surface 83 of the support 46 is detached from the cam 81 and the pivoting movement of the cross lever which was previously prevented 38 with the slat 5 allows.
  • the cam 81 is inclined to the surface 83 of the support 46 and enables the lamella 5 to pivot about 30 degrees as long as the support 46 is pulled downward.
  • the cam 81 is designed such that in the lowest position, i.e. when the coil spring 79 is compressed, the lowest lamella can assume the same inclination as the freely movable lamellae above it.
  • the cam 81 has a flat contact surface with the surface 83 of the support 46.
  • another suitable contact surface preferably congruent with the support surface 83, can also be provided on the cam 81.
  • the carriage 33 lifts off the latching member 17.
  • the pawl 55 pivots downward and comes into engagement with the side guide 1. This causes the carriage 33 to wedge in the guide 1 with increasing lifting force and thus a lifting of the Slats 5 impossible.
  • the carriage 33 slides downward and the pawl 55 is raised by the upper edge of the latching member 17 and the contact with the side guide 1 is released.
  • the latch can be locked by the pawl 55 in any lowered position of the store.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Blinds (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Harvester Elements (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Non-Insulated Conductors (AREA)

Claims (11)

1. Store à lamelles (7) dont les lamelles (5) sont guidées chacune latéralement sur des leviers transversaux (38) comprenant un tourillon d'extrémité (42) dans la fente longitudinale (44) d'un guide latéral (1), comprenant un organe de traction (15) passant dans le guide latéral (1), entraîné par un arbre (9) et passant sur des roues de renvoi (11) pour soulever et abaisser les lamelles (5), ainsi qu'un chariot (33) relié au levier transversal (38) situé le plus en bas d'une paire de chaînes à maillons (37) disposées dans les guide latéral, caractérisé en ce qu'un organe d'arrêt (17) est monté entre le chariot (33) et l'organe de traction (15), qui peut être dégagé quand une résistance est rencontrée dans la région des lamelles (5) ou du guide latéral (1) en surmontant une résistance opposée par le chariot (33).
2. Store à lamelles selon la revendication 1, caractérisé en ce que l'organe d'arrêt (17) comprend un talon (30) sur lequel repose le chariot (33) en position enclenchée.
3. Store à lamelles selon la revendication 2, caractérisé en ce que l'organe d'arrêt (17) comprend un nez élastique (28) qui fait saillie dans un évidement (34) du chariot (33) avec ou sans jeu vertical quand le chariot (33) repose contre le talon (30).
4. Store à lamelles selon la revendication 3, caractérisé en ce que le nez (28) est constitué par un ressort coudé ou par une plaque (18) montée élastiquement, dont la section inférieure (22) forme un angle obtus avec le bord latéral vertical (20) du chariot (33), et la section supérieure (24) un angle aigu avec ce bord latéral.
5. Store à lamelles selon l'une des revendications 1 à 4, caractérisé en ce que l'organe d'arrêt (17) est fixé dans les trous ou découpes (23) de l'organe de traction (15).
6. Store à lamelles selon l'une des revendications 1 à 5, caractérisé en ce qu'un ressort (13) est monté entre la roue d'entraînement et de renvoi (11) et l'arbre d'entraînement (9) pour assurer la liaison élastique entre ces deux éléments.
7. Store à lamelles selon la revendication 6, caractérisé en ce que l'arbre (9) et la roue d'entraînement et de renvoi (11) peuvent tourner l'un par rapport à l'autre sur au moins 90°.
8. Store à lamelles selon l'une des revendications 1 à 7, caractérisé en ce qu'un cliquet pivotant (55) est monté sur le chariot (33), dont l'extrémité libre (57) repose contre un organe d'arrêt (17) de l'organe de traction (15) pendant le fonctionnement et parvient en appui contre le guide latéral (1) lors du soulèvement d'une lamelle (5).
9. Store à lamelles selon l'une des revendications 1 à 8, caractérisé en ce que le levier transversal (38) de la lamelle inférieure (5) peut être pressé contre une surface d'appui (83) du chariot (33) par une patte de liaison (73).
10. Store à lamelles selon la revendication 9, caractérisé en ce qu'une butée (81) est montée sur le tourillon de support (42) du levier transversal (38), butée qui comprend une section de butée adaptée à la surface d'appui (83).
11. Store à lamelles selon la revendication 9 ou 10, caractérisé en ce que la patte de liaison (73) est guidée dans un évidement (77) et peut être enfoncée dans l'évidement (77) par un ressort (79).
EP88810811A 1987-12-21 1988-11-28 Store à lamelles Expired - Lifetime EP0322354B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88810811T ATE65825T1 (de) 1987-12-21 1988-11-28 Raffstore.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4972/87 1987-12-21
CH497287 1987-12-21

Publications (2)

Publication Number Publication Date
EP0322354A1 EP0322354A1 (fr) 1989-06-28
EP0322354B1 true EP0322354B1 (fr) 1991-07-31

Family

ID=4285731

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88810811A Expired - Lifetime EP0322354B1 (fr) 1987-12-21 1988-11-28 Store à lamelles

Country Status (5)

Country Link
EP (1) EP0322354B1 (fr)
JP (1) JPH079140B2 (fr)
AT (1) ATE65825T1 (fr)
DE (1) DE3864017D1 (fr)
ES (1) ES2024050B3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH702333A1 (de) * 2009-12-04 2011-06-15 Griesser Holding Ag Ganzmetall-Lamellenstore.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH442699A (de) * 1966-08-25 1967-08-31 Griesser Ag Lamellenstore
DE3037701A1 (de) * 1980-10-06 1982-07-15 Emil Schenker AG, 5012 Schönenwerd Rafflamellenstore, rolladen o.dgl.
ATE40440T1 (de) * 1983-05-18 1989-02-15 Baumann Rolladen Hubsicherung sowie rafflamellenstore mit einer derartigen vorrichtung.

Also Published As

Publication number Publication date
ATE65825T1 (de) 1991-08-15
JPH079140B2 (ja) 1995-02-01
ES2024050B3 (es) 1992-02-16
EP0322354A1 (fr) 1989-06-28
JPH01203582A (ja) 1989-08-16
DE3864017D1 (de) 1991-09-05

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