EP0352410B1 - Transmission à vis sans fin pour l'ajustage d'angle des stores à lamelles verticales - Google Patents

Transmission à vis sans fin pour l'ajustage d'angle des stores à lamelles verticales Download PDF

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Publication number
EP0352410B1
EP0352410B1 EP89107580A EP89107580A EP0352410B1 EP 0352410 B1 EP0352410 B1 EP 0352410B1 EP 89107580 A EP89107580 A EP 89107580A EP 89107580 A EP89107580 A EP 89107580A EP 0352410 B1 EP0352410 B1 EP 0352410B1
Authority
EP
European Patent Office
Prior art keywords
worm
drive according
worm drive
snap sleeve
hooks
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
EP89107580A
Other languages
German (de)
English (en)
Other versions
EP0352410A3 (fr
EP0352410A2 (fr
Inventor
Horst Dipl.-Ing. Spohr
Walter Hügin
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.)
Bautex Adolf Stover Sohne GmbH and Co KG
Original Assignee
Bautex Adolf Stover Sohne GmbH and Co KG
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 Bautex Adolf Stover Sohne GmbH and Co KG filed Critical Bautex Adolf Stover Sohne GmbH and Co KG
Publication of EP0352410A2 publication Critical patent/EP0352410A2/fr
Publication of EP0352410A3 publication Critical patent/EP0352410A3/fr
Application granted granted Critical
Publication of EP0352410B1 publication Critical patent/EP0352410B1/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
    • E06B9/36—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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S160/00—Flexible or portable closure, partition, or panel
    • Y10S160/90—Vertical type venetian blind

Definitions

  • the invention relates to a worm drive for adjusting the angular position of vertical louvre blinds with a vertical axis arranged within a lamellar carrier housing, which carries a pinion connected to it in a rotationally fixed manner and is connected at the end to a lamella, the worm being in drive engagement with the pinion by means of a worm rotatable via an inner profile by a drive shaft.
  • Vertical blinds generally serve as sun and / or privacy screens for windows. However, they can also be used for other purposes, such as for subdivision or division of larger rooms.
  • Their generally made of textile material, strip-shaped, vertically arranged slats are each fastened at least at their upper end to a slat carrier and can generally be pivoted about a central longitudinal axis, it being possible for all slats of a vertical blind to be pivoted together by means of a common drive.
  • the plate carriers are generally held in a mounting rail and can be moved along this by means of a drive.
  • the slats In the open position, in which the window is not covered by the slats, the slats are practically moved together on one side to form a package, the slats running parallel to one another.
  • the angular position of the individual lamellae is adjusted by means of a common drive, which generally has the shape of a drive shaft, which is in positive engagement with screws mounted in the lamella carrier housings.
  • the vertical axis on which the lamella is held carries a pinion which meshes with the worm, so that the rotation of the drive shaft Angular position of the slat is adjustable.
  • the invention has for its object to design the worm drive of the type mentioned in such a way that simple assembly is made possible without the use of special tools and without the risk of a housing breakage.
  • the overall depth of the disk carrier housing is to be reduced in order to reduce its expansion in the direction of the mounting rail, in particular when the disk pack is moved together.
  • the worm has an axial central opening and is held by means of a snap sleeve on a tubular socket-shaped projection of the disk carrier housing. Thanks to this configuration, the assembly in a very simple way.
  • the worm is pushed with its central opening onto the tube-shaped projection, which could also be referred to as a hub, whereupon the snap sleeve is inserted, which rotatably holds the worm on the hub.
  • the front wall of the housing can be completely eliminated. In addition to the significantly simplified assembly, this also results in material savings.
  • a further considerable advantage of the design according to the invention is that the worm is now held on a hub and no longer on the end of pins or flanges. As a result, the overall depth of the disk carrier housing can be reduced considerably, so that the space requirement of the retracted disk pack is considerably reduced.
  • the worm has a circumferential internal toothing which is in engagement with an outer profile of the snap sleeve.
  • the outer profile engages in the toothing of the worm and transmits the torque from the drive shaft via the worm to the pinion on the vertical axis.
  • the profiling of the snap sleeve slides along the internal toothing of the screw under a certain resistance. A slip clutch is thus formed, which allows the drive shaft to be overtightened without damage.
  • the internal toothing of the worm is preferably arranged in a circumferential recess, while the outer profile of the snap sleeve is formed by cams directed outwards from its collar.
  • the collar of the snap sleeve is thus able on the one hand to hold the screw on its hub, while the cams engage in the internal toothing of the screw on the peripheral edge.
  • the cams are advantageously held on a spring clip, which expediently from a cut-out part of the federal government Snap sleeve exist.
  • the cams can thus yield radially resiliently.
  • the spring force is sufficient to transmit the torque required to rotate the slats. In the event of resistance, they spring over the internal toothing of the worm so that damage to the drive parts can be ruled out.
  • the snap sleeve preferably carries axially held and radially resilient hooks which engage behind the disk carrier housing.
  • the hooks When the snap sleeve is inserted into the tubular socket-shaped hub, the hooks spring together radially inwards. In the end position, the hooks spring back radially outwards and thus hold the snap sleeve and worm rotatably on the hub of the housing.
  • a circumferential recess is advantageously provided concentrically with the hub, into which the hooks of the snap sleeve engage.
  • the hooks do not protrude beyond the level of the rear housing wall, so that, accordingly, they do not contribute to an adverse increase in the overall depth of the housing.
  • the end faces of the hooks are advantageously inclined outwards towards the collar of the snap sleeve.
  • the inclined surfaces slide along the inlet opening and are thus pressed radially inwards. This considerably simplifies assembly, since only an axial pressure has to be applied to the snap sleeve in order to guide the hooks through the axial opening of the hub.
  • the snap sleeve is provided with an inner projection which engages in a corresponding axial recess in the drive shaft.
  • This preferably has Inner projection has a circular cross-sectional configuration, this profile engaging in a corresponding longitudinal recess in the drive shaft.
  • the worm preferably comprises only one thread. This design facilitates the insertion of the vertical axis with the pinion formed in one piece with it.
  • the vertical axis with its end bearing journal is initially inserted obliquely into two axially offset half bearing shells, whereupon the second bearing journal is latched into the lower second bearing shell provided with an axial slot by lateral pressure. With a slight turn, the pinion engages with the single thread of the worm.
  • the pinion of the vertical axis, with which the worm is in engagement extends, according to one embodiment of the invention, only over a partial circumference of the vertical axis and is delimited on both sides by a stop. As soon as the worm comes into contact with one of the stops, the slip clutch between the snap sleeve and the worm comes into operation, so that a further rotation of the drive shaft has no effect.
  • the disk carrier housing 10 is in contact with the inner profile of a mounting rail (not shown here) via slide guide 11, 12, 13 and 14 and is moved along the mounting rail via a manual or motor drive.
  • a vertical axis 15 is rotatably mounted in the housing 10 and bears a lamella holder or a hook 16 at its lower end for receiving a bracket 18 held on the lamella 17.
  • the vertical axis 15 comprises a pinion 19 formed with the same material, but which extends only over half the circumference of the vertical axis 15, since the lamella 17 itself should not be pivoted by more than an angle of 180 °.
  • the pinion is delimited by at least one stop 20 on the circumference of the vertical axis 15.
  • FIG. 2 shows, protrudes from the rear wall 21 of the disk carrier housing 10, which has no front end wall, a tube-shaped projection 22 forward into the interior of the housing 10, which forms the hub for the screw 23.
  • the worm 23 comprises only a single thread 24.
  • the diameter of the hub 22 is only slightly smaller than the inner diameter of the worm 23, so that it can easily turn on it.
  • the worm 23 is held on the hub 22 of the housing 10 by means of a snap sleeve 25.
  • Radially resilient hooks 26 extend through the axial recess of the hub 22 and spring radially outward into a circumferential recess 37 on the rear side of the rear wall 21 of the housing 10, as is clear from FIG. 1.
  • FIG 3 shows the worm drive in the assembled state, the worm 23 being held firmly, but rotatably, on the hub by the snap sleeve 25.
  • the vertical axis 15 is inserted obliquely into two axially offset bearing half-shells 27 of the housing 10, whereupon, as indicated by arrows in FIG. 3, the lower bearing journal 28 is latched into the lower bearing shell 29 provided with an axial slot by lateral pressure.
  • the pinion 19 comes into engagement with the worm gear 24 of the worm 23.
  • the front view of the snap sleeve 25 shown in FIG. 4 shows that it carries two cams 30 on the outer periphery of the collar which engage with the internal toothing 31 of the worm 23 shown in section in FIG. 6.
  • the snap sleeve 25 is at a distance from the outer circumference with two one another opposite, circular arc-shaped recesses 32, whereby spring clips 33 are formed which carry the cams 30.
  • the cams 30 are thus in resilient engagement with the internal toothing 31 of the worm 23, so that only a predetermined torque is transmitted.
  • the snap sleeve 25 is also provided on its inside with a circular projection 34, for positive engagement with the drive shaft not shown in the drawings, which is provided with a corresponding longitudinal recess.
  • the snap sleeve 25, starting from its collar, is provided with hooks 26 extending in the axial direction.
  • the hooks 26 have an end surface 35 inclined towards the outside, which facilitates the insertion of the snap sleeve 25 into the hub 22, the hooks 26 being guided radially inwards.
  • the worm 23 carries an annular flange 36 adjacent to the inner toothing 31, against which the snap sleeve 25 bears when it engages the worm 23 and the hub 22.
  • FIG. 7 shows a section through the housing 10 with the worm drive mounted.
  • the worm 23 is placed on the hub 22 and the snap sleeve 25 engages with its hooks 26 in the annular recess 37 on the back of the rear wall 21 of the housing 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Gear Transmission (AREA)
  • Blinds (AREA)

Claims (13)

  1. Mécanisme de transmission à vis sans fin pour le réglage de la position angulaire de stores à lamelles verticales, comportant un axe vertical qui est disposé à l'intérieur d'un carter de support de lamelle, qui porte un pignon qui lui est lié de manière fixe en rotation, et qui à son extrémité est en liaison avec une lamelle, une vis sans fin susceptible d'être entraînée en rotation par l'intermédiaire d'une partie profilée intérieure, étant en prise de transmission avec le pignon, caractérisé en ce que la vis sans fin (23) présente une ouverture centrale axiale et est maintenue sur une protubérance (22) en forme d'embout tubulaire du carter de support de lamelle (10), au moyen d'une douille encliquetable (25).
  2. Mécanisme de transmission à vis sans fin selon la revendication 1, caractérisé en ce que la vis sans fin (23) comporte une denture intérieure périphérique (31) qui est en prise avec une partie profilée extérieure (30) de la douille encliquetable (25).
  3. Mécanisme de transmission à vis sans fin selon la revendication 2, caractérisé en ce que la denture intérieure (31) de la vis sans fin (23) est agencée dans un évidement périphérique, et la partie profilée extérieure de la douille encliquetable (25) est formée par des cames (30) dirigées vers l'extérieur à partir de son embase.
  4. Mécanisme de transmission à vis sans fin selon la revendication 3, caractérisé en ce que les cames (30) sont maintenues chacune sur un étrier élastique (33).
  5. Mécanisme de transmission à vis sans fin selon la revendication 4, caractérisé en ce que les étriers élastiques (33) sont constitués par une partie périphérique découpée de la douille encliquetable (25).
  6. Mécanisme de transmission à vis sans fin selon l'une des revendications précédentes, caractérisé en ce que la douille encliquetable (25) porte des crochets (26) maintenus en direction axiale et élastiques en direction radiale, qui viennent s'engager derrière la paroi arrière (21) du carter de support de lamelle (10).
  7. Mécanisme de transmission à vis sans fin selon la revendication 6, caractérisé en ce que les crochets (26) de la douille encliquetable (25) s'engagent dans un évidement périphérique (37) sur le côté arrière de la paroi arrière (21) du carter de support de lamelle (10).
  8. Mécanisme de transmission à vis sans fin selon la revendication 6 ou 7, caractérisé en ce que les surfaces terminales (35) des crochets (26) sont inclinées vers l'extérieur en direction de l'embase de la douille encliquetable (25).
  9. Mécanisme de transmission à vis sans fin selon l'une des revendications 6 à 8, caractérisé en ce que quatre crochets (26) décalés l'un par rapport à l'autre de 90°, sont maintenus sur la douille encliquetable (25).
  10. Mécanisme de transmission à vis sans fin selon l'une des revendications précédentes, caractérisé en ce que la douille encliquetable (25) présente une protubérance interieure (34).
  11. Mécanisme de transmission à vis sans fin selon la revendication 10, caractérisé en ce que la protubérance intérieure (34) présente en section transversale, essentiellement une forme de secteur circulaire.
  12. Mécanisme de transmission à vis sans fin selon l'une des revendications précédentes, caractérisé en ce que la vis sans fin (23) ne comporte qu'un seul pas de filet (24).
  13. Mécanisme de transmission à vis sans fin selon l'une des revendications précédentes, caractérisé en ce que le pignon (19) de l'axe vertical (15), avec lequel est en prise la vis sans fin (23), ne s'étend que sur une partie de la périphérie de l'axe vertical (15), et est limité de part et d'autre par une butée (20).
EP89107580A 1988-07-29 1989-04-26 Transmission à vis sans fin pour l'ajustage d'angle des stores à lamelles verticales Expired - Lifetime EP0352410B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3825978 1988-07-29
DE3825978A DE3825978A1 (de) 1988-07-29 1988-07-29 Schneckenantrieb zur winkelpositionseinstellung von vertikallamellenjalousien

Publications (3)

Publication Number Publication Date
EP0352410A2 EP0352410A2 (fr) 1990-01-31
EP0352410A3 EP0352410A3 (fr) 1991-07-24
EP0352410B1 true EP0352410B1 (fr) 1993-02-17

Family

ID=6359933

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89107580A Expired - Lifetime EP0352410B1 (fr) 1988-07-29 1989-04-26 Transmission à vis sans fin pour l'ajustage d'angle des stores à lamelles verticales

Country Status (5)

Country Link
US (1) US5067544A (fr)
EP (1) EP0352410B1 (fr)
CA (1) CA1316096C (fr)
DE (1) DE3825978A1 (fr)
ES (1) ES2039739T3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5445205A (en) * 1993-10-08 1995-08-29 Hansen; Don Vertical blind assembly
US5577542A (en) * 1994-09-28 1996-11-26 Hung; Tien-Szu Slat carrier for vertical venetian blind
US5950701A (en) * 1997-06-30 1999-09-14 Exactocraft (Proprietary) Limited Drive gear unit for vertical blind systems
US6866078B1 (en) * 2003-12-03 2005-03-15 Ya-Yin Lin Sliding carriage for vertical blind

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4316493B1 (en) * 1977-08-15 1997-06-24 Newell Operating Co Vertical blind controls
DE2807440C2 (de) * 1978-02-22 1985-06-13 Hunter Douglas Industries B.V., Rotterdam Vertikallamellenjalousie mit in einer Oberschiene verschiebbaren Laufwagen
US4350197A (en) * 1978-08-03 1982-09-21 Berthold Haller Shutter blind assembly
DE2913885C2 (de) * 1979-04-06 1984-04-12 Hunter Douglas Industries B.V., 3008 Rotterdam Lamellenjalousie mit lotrecht angeordneten Lamellen
EP0120567B1 (fr) * 1983-03-24 1986-11-05 Hunter Douglas Industries B.V. Embrayage pour un store à lamelles verticales
GB2145141A (en) * 1983-08-16 1985-03-20 Hunter Douglas Ind Bv Clutch for a vertical louvre blind
US4628981A (en) * 1985-04-08 1986-12-16 Micro Molds Corporation Vertical blind assembly
AU556227B3 (en) * 1986-07-14 1986-11-13 Kresta Blinds Ltd. Vertical blind carrier
US4736784A (en) * 1987-02-09 1988-04-12 Boloix Jose A Vertical blind mechanism
US4799527A (en) * 1987-04-30 1989-01-24 American Vertical Systems Vertical blind assembly
DE3825959A1 (de) * 1988-07-29 1990-02-08 Stoever Adolf Bautex Kg Lamellentraeger fuer eine vertikallamellenjalousie

Also Published As

Publication number Publication date
ES2039739T3 (es) 1993-10-01
EP0352410A3 (fr) 1991-07-24
CA1316096C (fr) 1993-04-13
DE3825978A1 (de) 1990-02-01
EP0352410A2 (fr) 1990-01-31
US5067544A (en) 1991-11-26

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