WO1996019634A1 - Mecanisme de reglage de position - Google Patents

Mecanisme de reglage de position Download PDF

Info

Publication number
WO1996019634A1
WO1996019634A1 PCT/NL1995/000432 NL9500432W WO9619634A1 WO 1996019634 A1 WO1996019634 A1 WO 1996019634A1 NL 9500432 W NL9500432 W NL 9500432W WO 9619634 A1 WO9619634 A1 WO 9619634A1
Authority
WO
WIPO (PCT)
Prior art keywords
projection
coupling
adjusting mechanism
position adjusting
mechanism according
Prior art date
Application number
PCT/NL1995/000432
Other languages
English (en)
Inventor
Hermanus Marinus Ignatius Koot
Original Assignee
Techniku B.V.
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 Techniku B.V. filed Critical Techniku B.V.
Priority to AU44014/96A priority Critical patent/AU4401496A/en
Publication of WO1996019634A1 publication Critical patent/WO1996019634A1/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
    • E06B9/303—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable with ladder-tape
    • E06B9/307—Details of tilting bars and their operation
    • 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
    • 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
    • E06B2009/285—Means for actuating a rod (being tilt rod or lift rod)

Definitions

  • the invention relates to a position adjusting mechanism such as described in the preamble of claim 1.
  • position 1 of such a part is meant the rotational orientation of that part relative to an axis of rotation thereof.
  • the present invention relates to those situations wherein the axis of rotation of that part is aligned with the output shaft of that motor.
  • blind a blinding system comprising an assembly of mutually parallel slats, the slats being rotatable about their longitudinal axes in order to cover for instance a window in a variable manner. If the slats extend horizontally, the term “Venetian blinds” is also used. If the slats extend vertically, the term “vertical blinds” is also used.
  • window-blinding systems are generally known, and the present invention will hereinafter be explained for use in blinds. However, it is explicitly noted that the present invention is not limited to this use.
  • the operating mechanism for those slats is provided in a hollow headrail of the blind, and comprises a drive rod extending in the longitudinal direction of that headrail, which rod will hereinbelow be indicated by the term "tilting rod”.
  • This tilting rod is rotatable about its longitudinal axis and rotation of all slats about their longitudinal axes is effected through rotation of this tilting rod about its longitudinal axis. The rotational orientation of the tilting rod defines the position of the slats.
  • the shape and dimensions of the headrail, the shape and dimensions of the tilting rod, the position of the tilting rod in the headrail, and the maximum adjustment angle of the tilting rod may differ from each other.
  • a position adjusting mechanism has been developed that is adapted thereto. It is true that such an adapted position adjusting mechanism will operate satisfactorily with the associated blind, but on account of the necessary mutual differences between the individual position adjusting mechanisms, they are relatively expensive.
  • the object of the present invention is to overcome the above-mentioned problems.
  • the object of the present invention is to provide a position adjusting mechanism which is applicable to all known types of blinds, which can readily be adapted to possible model modifications or new models, which can be mounted in an easy and quick manner, and which can even be incorporated into already existing blinds.
  • the object of the present invention is to provide a relatively cheap, universal position adjusting mechanism.
  • a position adjusting mechanism as described in the preamble of claim l is known from French patent application 2,522,753.
  • the coupling piece of the known mechanism has the form of a shell-shaped insert.
  • some drawbacks are attached to this.
  • the thickness of the output element mentioned should be relatively great to be able to include both the rotatable element and the shell-shaped insert.
  • the insert is intended to form a fixed whole with this output element, as a result of which the mechanism, after the fitting of the insert, is only usable for one particular rotatable element.
  • the publication does not teach how one drive mechanism is usable with several types of rotatable elements.
  • this coupling piece is exchangeable, and can be coupled to the output element on the one hand and to the rotatable part on the other.
  • the output element fixedly coupled to the motor, can be coupled to the rotatable part by means of the exchangeable coupling element.
  • the drive box fits in several headrails of different blinds, and there is provided a system of several coupling elements which can all be coupled to the above-mentioned output element and are in each case adapted for coupling to other rotatable parts of the different blinds, there being provided a system of different mounting pieces for mounting the drive box in a selected blind, the output element being aligned with the relevant rotatable part.
  • the coupling piece is of a multipart design.
  • Fig. l is a perspective view of a blind
  • Fig. 2 is a diagrammatic top plan view of a blind
  • Fig. 3A shows a partial, diagrammatic cross section of a bind according to the line III-III in Fig. 2
  • Figs. 3B and 3C show the blind of Fig. 3A in different tilting conditions
  • Figs. 4A-4K show cross sections of different known blind headrails
  • Fig. 5 shows, to a larger scale, the cross sections of
  • FIG. 4A-4K projected one over the other;
  • Fig. 6 shows in more detail a perspective view of a position adjusting mechanism in disassembled condition according to the present invention
  • Fig. 7 is a top plan view, partly in section, of a drive box
  • Fig. 8 is a side elevation, partly in section, of a drive box with mounting pieces and a coupling piece;
  • Fig. 9A is a side elevation, partly in section, of a coupling piece
  • Fig. 9B is a front view of that coupling piece according to the arrow B in Fig. 9A;
  • Figs. 10A-10C are different views of a coupling piece proper of a multipart coupling piece;
  • Figs. 11A-11D are different views of an intermediate ring of a multipart coupling piece.
  • Fig. 12 shows a block diagram of a drive circuit for a motor.
  • Fig. 1 diagrammatically shows a blind 10, having a headrail 11 and horizontal slats 12.
  • the slats 12, generally having a bent cross section, are supported by supporting strips 17 which have their ends attached to vertically directed tilting cords 13 and 14, as is shown in more detail in Fig. 3A.
  • Mounted under the bottom slat 12 is a bottom rail 15, which is not only attached to the tilting cords 13 and 14, but also to a vertically directed hoisting cord 16 extending centrally through the slats 12.
  • the tilting cords 13 and 14 are coupled to a tilting mechanism 30 disposed in the headrail 11, while the hoising cord 16 is coupled to a hoisting mechanism disposed in the headrail 11.
  • the tilting mechanism 30 By operating the tilting mechanism 30, the slats 12 can be tilted, i.e. tha angle of the slats 12 relative to the horizontal can be varied.
  • the hoisting mechanism By operating the hoisting mechanism, the slats 12 can be hoisted, i.e. the vertical position of the bottom rail 15 can be changed.
  • the tilting mechanism 30 comprises a tilting rod 31, disposed in the headrail 11 and directed in the longitudinal direction of the headrail 11.
  • This tilting rod 31 is rotatably bearing-mounted in the headrail 11, by means of bearing blocks which are known per se and which are not shown for the sake of simplicity, and is coupled to the tilting cords 13 and 14, as shown in Figs. 2 and 3.
  • the tilting rod 31 comprises winding rollers 32.
  • the tilting cords 13 and 14 have their ends 33 and 34 attached to the winding rollers 32, and, upon rotation of the tilting rod 31, are respectively wound on or unwound from the winding rollers 32, as is illustrated in Fig. 3B.
  • Fig. 3C in this embodiment, the maximum angle through which the tilting rod 31 has to rotate in order to bring the slats 12 into their extreme tilting position is determined inter alia by the diameter of the winding rollers 32.
  • the tilting of the slats 12 can be performed manually.
  • the tilting rod 31 may comprise operating cords, not shown for the sake of simplicity. It is observed that the use of operating cords for tilting slats manually is generally known.
  • the blind 10 comprises a position adjusting mechanism 40 according to the invention.
  • the position adjusting mechanism 40 comprises a drive box 44 which is disposed in the headrail 11 and which has an electromotor 41 disposed therein, of which electromotor an output shaft is coupled to the tilting rod 31, so that the tilting of the slats 12 can be carried out through excitation of the motor 41.
  • a control panel 42 may be present, connected via an electric wire to the motor 41 or, as in the example illustrated, coupled via a wireless communication path to a receiver 43 associated with the motor 41.
  • remote control systems can be used which are already known per se for this purpose, while the nature and construction of transmitter and receiver do not constitute a subject of the present invention, and a skilled person need not have knowledge thereof for a proper understanding of the present invention, they will not be further described.
  • the position adjusting mechanism 40 according to the invention is designed to be universally applicable to a large number of different types of blinds, as will be explained with reference to Figs. 4 and 5.
  • Blinds are manufactured by various manufacturers, and, inter alia, the constructions of the differently manufactured headrails show mutual differences, as do the constructions of the tilting rods.
  • Figs. 4A-4K show cross sections of different types of headrails 11 and the tilting rods 31 present therein; for simplicity's sake, the reference numerals are provided in Fig. 4A only.
  • the headrail 11 consists of a U-shaped section which may be manufactured via injection molding or via the flanging over of a flat plate.
  • the different sections have different heights and different widths, the corner points have different contours, and the ends of the legs 18 of the U-form are bent inwards according to different contours.
  • the horizontal position of the tilting rod 31 it usually properly corresponds to a vertical plane of symmetry of the U-shaped section.
  • the tilting rods have mutually different thicknesses and mutually different cross sections, while, further, the vertical distances of the axis of rotation 35 of the tilting rods 31 relative to the bottom 19 of the headrail 11 may be mutually different.
  • two types of tilting rods have indeed mutually equal cross sections, but that the rotational orientations thereof are mutually different when the slats 12 are in the horizontal position (see Fig. 3A) , as is for instance illustrated in Figs. 4F and 4G.
  • FIG. 5 wherein the sections of the Figs. 4A-4K are projected one over the other to a larger scale, in such a manner that the axes of rotation 35 of the respective tilting rods 31 coincide.
  • An important aspect of the universal character of the position adjusting mechanism 40 according to the invention is also illustrated in Figs. 4A-4K and 5, in that the contour of the cross section of a drive box 44 is shown in dotted lines.
  • the preferred embodiment of the drive box 44 according to the present invention has a width of about 23.4 mm, a height of about 17.8 mm, and the vertical distance from the output shaft to the top face is about 5.6 mm.
  • the motor 41 and a gear wheel transmission system 45 are disposed in the drive box 44.
  • the drive box 44 comprises loose mounting pieces 46 for the mounting in a headrail 11.
  • the drive box 44 comprises pins 47 which project from the end faces of the drive box and fit in holes 48 in the mounting pieces 46.
  • the pins 47 have a projection on their side faces, so that they can be regarded as snap fingers.
  • the outer contour of the mounting pieces 46 is adapted to the inner contour of the headrail 11.
  • the mounting pieces 46 have a base part 50, two arms 51 which point upwards from that base part 50 via an S-curve and which fit in the inwardly folded ends of the legs 18 of the U-section of the headrail 11, and two resilient supporting parts 52 which extend upwards on both sides of that base part 50 and which, in mounted form, bear against the inner wall of the legs 18 of that U-section. Because of the resilient construction of the supporting parts 52, and because their outwardly pointing surface is preferably slightly rounded, as is shown, they are easily displaceable in the headrail 11 in order to be positioned therein.
  • the drive box 44 itself a shape which is adapted to the shape of a particular type of headrail, for instance by manufacturing the drive box 44 as one whole with the mounting pieces 46.
  • the drive box 44 with the motor 41 and gear wheel transmission system 45 disposed therein is preferably identical for all different types of headrails, and only the mounting pieces 46 are adapted, as far as contour is concerned, to the contour of the type of headrail for which those mounting pieces 46 are intended, a considerable reduction in the manufacturing costs is realized.
  • the shape of the mounting pieces 46 is adapted to the contour of the type of headrail for which those mounting pieces 46 are intended so that an axis of rotation 56 of an output element 55 of the gear wheel transmission system 45, in mounted condition, is aligned with the tilting rod 31 disposed in the headrail 11.
  • the output element 55 comprises a cylindrical body 59 which is coaxially attached to a gear wheel 57 forming part of the gear wheel transmission system 45.
  • the cylindrical body 59 and the gear wheel 57 are manufactured as a single molding from plastic through injection molding.
  • the cylindrical body 59 is provided with a central hole 59 of a predetermined transverse contour, a hexagon in the example shown, which will hereinafter be referred to as a coupling hole.
  • the drive box 44 comprises two half-housings: a top shell 61 and a bottom shell 62.
  • each shell 61, 62 On an output side 66, each shell 61, 62 has an outwardly projecting, semicircular shell part 63, 64.
  • the two circular shell parts 63, 64 connect to each other to form a cylindrical sleeve acting as a bearing for the cylindrical body 59.
  • the semicircular shell part 63 of the top shell 61 comprises an outwardly protruding projection 65, whose function will be described in more detail later on.
  • a coupling piece 70 is provided for coupling the output element 55 to the tilting rod 31.
  • the coupling piece 70 has a coupling pin 71 which fits tightly in the above-mentioned coupling hole 58 of the output element 55.
  • the coupling pin 71 has a hexagonal section.
  • the free end of the coupling pin 71 is preferably chamfered according to a cone having an apex angle of about 60°, as is illustrated in the side elevation of Fig. 9A.
  • the coupling pin 71 is preferably provided, at its outer surface, with at least one longitudinally extending groove 81, as is illustrated in the front view of Fig. 9B, permitting the air present in the coupling hole 58 to escape when the coupling pin 71 is introduced into that coupling hole 58.
  • the coupling piece 70 has a coupling hole 75 which is positioned coaxially opposite the coupling pin 71 and whose cross section has a contour corresponding to the contour of the cross section of the tilting rod 31.
  • a coupling hole 75 is located in a cylindrical body part 73 extending from that flange 72.
  • the diameter of that cylindrical body part 73 can be equally large as that of the flange 72, so that the flange 72 is defined by the bottom of the cylindrical body part 73.
  • the diameter of that cylindrical body part 73 is reduced relative to the diameter of the flange 72, and comprises longitudinally directed strengthening ribs 74 extending from the flange 72 to the mouth of the coupling hole 75.
  • the flange 72 On the side of the coupling pin 71, the flange 72 comprises a projection 76 having the shape of a segment of an arc of a circle which is centered relative to an axis of rotation 79 of the coupling piece 70. Between that segment of an arc of a circle and the coupling pin 71, a radial space is left clear. The tangential length of that segment of an arc of a circle is referred to as the projection length ⁇ , and can be expressed in degrees.
  • the end faces of the projection 76 are designated by the reference numerals 77 and 78. Diametrically opposite the projection 76, a recess 80 is provided in the flange 72, which recess serves to facilitate the automatic mounting of the coupling piece 70.
  • the coupling pieces 70 can be manufactured as a single molding in a simple and relatively cheap manner, for instance by means of an injection molding process.
  • Fig. 8 shows the coupling piece 70 in a mounted condition, the coupling pin 71 being inserted into the coupling hole 58 of the output element 55.
  • the projection 76 embraces the cylindrical sleeve defined by the semicircular shell parts 63, 64, with the cylindrical sleeve defined by the semicircular shell parts 63, 64 extending into the above-mentioned radial space between the coupling pin 71 and the projection 76.
  • this projection 76 will move along the outer surface of the cylindrical sleeve defined by the semicircular shell parts 63, 64, and finally, one of the end faces 77, 78 of the projection 76 will contact the projection 65 on the outer surface of the semicircular shell part 63 of the top shell 61.
  • a first extreme rotational position of the coupling piece 70 relative to the drive box 44 is defined.
  • the other one of the end faces 77, 78 of the projection 76 Upon rotation in the other direction, the other one of the end faces 77, 78 of the projection 76 will contact the above- mentioned projection 65, whereby a second extreme rotational position of the coupling piece 70 is defined.
  • the angular distance between the first extreme rotational position and the second extreme rotational position of the coupling piece 70 is here referred to as the rotational freedom ⁇ of the coupling piece 70.
  • ⁇ is equal to 360°- ⁇ - ⁇ , ⁇ being the angular dimension of the projection 65, measured relative to the axis of rotation 56.
  • the projection 65 has a thickness of about 2 mm, which at the selected dimensions of the system corresponds to an angular dimension ⁇ of about 30°.
  • the projection 76 has a projection length of at least about 2 mm, which corresponds to an angular dimension ⁇ of likewise about 30°.
  • the rotational freedom ⁇ of the coupling piece 70 is in the range of from 0° to about 300°.
  • the two extreme tilting positions of the slats 12 correspond to extreme rotational positions of the tilting rod 31.
  • the angular distance between the two extreme rotational positions of the tilting rod 31 is here referred to as the adjustment angle ⁇ of the tilting rod 31.
  • this adjustment angle ⁇ is a fixed datum which is determined by the type of blind for which the position adjusting mechanism 40 is intended, as well as that the contour of the cross section of the tilting rod 31 is a fixed datum.
  • the coupling element 70 is adapted to the type of blind for which the position adjusting mechanism 40 is intended, because, as has already been observed, the contour of the coupling hole 75 is chosen to be in agreement with the contour of the cross section of the tilting rod 31, while also the rotational freedom ⁇ of the coupling piece 70 is chosen to be in agreement with the adjustment angle b of the tilting rod 31, in that the angular dimension a of the projection 76 is chosen according to the formula ⁇ * 360° - ⁇ - ⁇ , or, in the example given, ⁇ * 330° - ⁇ .
  • the adjusting angle ⁇ of the tilting rod 31 in principle depends on the type of blind. In practice, for ⁇ , values varying from 180° to 500° occur. In accordance with a further aspect of the present invention, for adjustment angles greater than 300° a multipart coupling piece 100 is provided, as will be explained hereinafter with reference to Fig. 10 and further.
  • the multipart coupling piece 100 comprises a coupling piece proper 110 and an intermediate ring 130.
  • the coupling piece proper 110 has, like the coupling piece 70, a coupling pin 71 and a coupling hole 75.
  • Fig. 10A shows the coupling piece proper 110 in a perspective view;
  • Fig. 10B shows a side elevation thereof, comparable with Fig. 9A and partly in section, and
  • Fig. 10C shows a front view thereof, comparable with Fig. 9B.
  • the coupling hole 75 of the coupling piece proper 110 is located in a cylindrical portion 113.
  • a flange 112 Provided adjacent the mouth of the coupling hole 75, transverse to the cylindrical portion 113, is a flange 112 having a recess 111 whose function is the same as that of the recess 80 described with regard to the coupling piece 70.
  • the flange 112 comprises a projection 116, diametrically opposite the recess 111 in the example shown.
  • the end faces of the projection 116 are designated by 117 and 118.
  • the tangential length of the projection 116 is referred to as the projection length y.
  • Fig. HA shows the intermediate ring 130 in a perspective view
  • Fig. 11B shows a longitudinal section thereof
  • Fig. lie shows an axial front view
  • Fig. 11D shows an axial rear view.
  • the intermediate ring 130 comprises an annular portion 133 whose outer diameter is substantially equal to the outer diameter of the flange 112 of the coupling piece proper 110 and whose inner diameter is substantially equal to the outer diameter of the cylindrical portion 113 of the coupling piece proper 110, so that the annular portion 133 fits around the cylindrical portion 113.
  • the annular portion 133 has a recess 131, whose function is the same as that of the recess 80 described in respect of the coupling piece 70.
  • the annular portion 133 comprises a first intermediate projection 136, disposed on a first axial end face 134 of the annular portion 133.
  • the first intermediate projection 136 has the shape of a segment of an arc of a circle, and is centered relative to the recess 131. This first intermediate projection 136 serves for cooperation with the projection 116 of the coupling piece proper 110.
  • the end f ces of the projection 136 are designated by 137 and 138.
  • the tangential length of the projection 136 is referred to as the projection length ⁇ .
  • the annular portion 133 further comprises a second intermediate projection 140, disposed on a second axial end face 135 of the annular portion 133, diametrically opposite the first intermediate projection 136.
  • the second intermediate projection 140 also has the shape of a segment of an arc of a circle.
  • the end faces of the projection 140 are designated by 141 and 142.
  • the tangential length of the projection 140 is referred to as the projection length ⁇ .
  • the second intermediate projection 140 serves for cooperation with the projection 65 of the drive box 44, for which purpose the inner diameter of the second intermediate projection 140 can correspond with the outer diameter of the cylindrical sleeve defined by the semicircular shell parts 63, 64. More in particular, the outer diameter of the cylindrical portion 113 of the coupling piece proper 110 can correspond with the outer diameter of the cylindrical sleeve defined by the semicircular shell parts 63, 64.
  • the intermediate ring 130 is fitted around the cylindrical portion 113 of the coupling piece proper 110, having its first axial end face 134 facing the flange 112 of the coupling piece proper 110 and having its second axial end face 135 facing the drive box 44.
  • the projection 116 has a projection length of at least about 2 mm, which at the dimensions selected corresponds to an angular dimension y of about 30°.
  • the projections 136 and 140 of the intermediate ring 130 have lengths of at least about 2 mm, so that at the dimensions selected, ⁇ and ⁇ are also about 30°.
  • ⁇ is also about 30°. It will then be understood that it is possible to choose the rotational freedom ⁇ of the coupling piece proper no proper to be in the range of from 0° to about 600°, by selecting suitable values for ⁇ , ⁇ and ⁇ . Preferably, ⁇ and ⁇ are chosen to be equal to each other, and ⁇ is chosen to be about 30°.
  • the position adjusting mechanism 40 it is conveniently possible to quickly adapt the position adjusting mechanism 40 to new or altered constructions of headrails 11 and/or tilting rods 31, as it is only necessary that the mounting pieces 46 and/or the coupling pieces 70 or 100 be adapted, while the drive box 44 with the motor 41 disposed therein and the gear wheel transmission system 45 and the output element 55 can remain unchanged. It is then possible that a manufacturer of a particular type of blind is supplied with a set of a drive box 44 with two mounting pieces 46 adapted to that type of blind and one coupling piece 70 adapted to the tilting rod 31 in question or a multipart coupling piece 100. However, this means that after the receipt of an order, such sets should first be assembled, which takes time.
  • the invention provides that during manufacturing, sets are composed consisting of a drive box 44, all known mounting pieces 46 in duplicate, and all known coupling pieces 70 and 100.
  • sets are composed consisting of a drive box 44, all known mounting pieces 46 in duplicate, and all known coupling pieces 70 and 100.
  • This aspect of the invention also offers the advantage that it is possible to put a universal set on the market, permitting for instance a do-it-yourselfer to provide an already existing blind with a position adjusting mechanism, regardless of the type of his blind.
  • variations in the rotational resistance experienced is meant that during the performance of a position adjustment, a position path is followed wherein the resistance (friction) is not the same everywhere, but varies from place to place. If, as a consequence thereof, the rotational speed of the motor varied, the user would notice this in the form of variations in pitch of the noise generated by the motor. This is not only experienced as disturbing, but is also associated with a faulty functioning of the motor, and is therefore undesired.
  • changes in the rotational resistance experienced is meant that the rotational resistance undergoes changes as time passes, for instance caused by the occurrence of wear and/or contamination of the moving parts in the tilting mechanism 30.
  • the automatic control unit can in each case bring the slats from any position into the desired position, regardless of the time needed therefor.
  • a system is relatively expensive.
  • the desired position can only be reached with a certain degree of precision if the rotational speed of the motor is known with a certain precision.
  • these problems can be overcome by using an oversized type for the motor 41, i.e. the maximum force (torque) that can be produced by the motor 41 is many times greater (10 to 20 times) than the load experienced in practice during normal operating conditions.
  • a control element 150 for the motor 41 which control element generates at its output 152, 153 a driving voltage for the motor 41 in response to a signal received from the receiver 43 at an input 151, which driving voltage has a predetermined value with a predetermined precision. This will cause the motor 41 to rotate at a relatively accurate rotational speed, determined by the predetermined driving voltage, while the current strength taken up by the motor 41 depends on the resistance experienced.
  • current-limiting means 154 which serve to limit the current strength taken up by the motor 41 to a predetermined value. This can be realized by including a current sensor 154 in the feed line to the motor 41, which current sensor provides to the control element 150 a signal representative of the current strength, as is illustrated. It is also possible to include a current limiter in the feed line to the motor 41.
  • the force produced by the motor 41 will not exceed a predetermined value when the slats 12 reach an end position or are blocked for another reason.
  • the reaching of an end position is determined by the cooperating projections 65 and 76, or the projections 65, 140, 136, 116, so that it is not necessary to provide end switches, which are relatively expensive and require relatively much space. Because the force produced by the motor 41 is limited through the current limitation, it is not neccesary to provide a slip coupling, which is relatively expensive and requires relatively much space.
  • control element 150 can be an integrated hole with the curren -limiting means 154.
  • the blind has vertical slats 12, which are rotated about their vertical body axes.
  • the coupling pin 71 and the coupling hole 58 have a cross-sectional contour other than illustrated, and/or that a coupling pin is provided on the output element 55, while a matching coupling hole is provided in the coupling piece 70 or 100.
  • the drive box 44 is intended to be disposed outside the headrail, in which case the mounting elements are modified in a corresponding manner.
  • pins or snap fingers 47 are provided on the mounting elements 46, and that the corresponding holes 48 are provided in the drive box 44.
  • the projections 76, 136, 140 need not continue throughout their lengths a , o , ⁇ , but may be interrupted: the effect according to the invention is reached by the ends 77, 78, 137, 138 and 141, 142 thereof, the central part of the projections has no function.
  • a multipart coupling piece 100 comprises several intermediate rings 130 which are disposed one behind the other and intermesh, and which are all provided around the cylindrical portion 113 of the coupling piece proper 110, to adapt the rotational freedom ⁇ of the coupling piece to situations wherein the adjustment angle of the rotatable part whose position is to be adjusted is greater than 600°.
  • all intermediate rings 130 are equal to each other, while the projection lengths of the intermediate projections 136 and 140 may be equal to about 2 mm, which, at the dimensions selected, comes down to values for ⁇ and ⁇ of about 30°.
  • ⁇ can then be determined according to the formula Y - 630° - ⁇ , for values of ⁇ of between 300° and 600°. This offers the advantage that only one type of intermediate ring 130 needs to be manufactured, so that in a system of different multipart coupling pieces 100, only one single intermediate ring 130 needs to be present.
  • the motor 41 is excited with a controlled driving current, and that the voltage is watched.

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

Abstract

L'invention concerne un mécanisme de réglage de position (40) susceptible d'être utilisé universellement avec différents types de stores pour fenêtre (10). A cet effet, ledit mécanisme (40) est équipé d'un boîtier d'entraînement (44) à l'intérieur duquel se trouve un moteur (41) et un élément de sortie (55). Par l'intermédiaire d'éléments de montage lâche (46), le boîtier (44) peut être installé sur la barre d'appui (11) de n'importe quel type de store (10), de sorte que l'élément de sortie (55) soit aligné avec une tige inclinable (31). A l'aide d'éléments d'accouplement lâche (70; 100), l'élément de sortie (55) peut être accouplé à la tige inclinable (31). A cet effet, chaque élément d'accouplement (70; 100) est pourvu d'un trou correspondant (75), qui est adapté à la forme de la tige inclinable (31), et qui est équipé aussi au moins d'une partie saillante (76; 116, 136, 140) dont une dimension (α; η, δ, ε) est choisie par rapport à l'angle de réglage υ de la tige inclinable (31).
PCT/NL1995/000432 1994-12-20 1995-12-20 Mecanisme de reglage de position WO1996019634A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU44014/96A AU4401496A (en) 1994-12-20 1995-12-20 Position adjusting mechanism

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9402170A NL9402170A (nl) 1994-12-20 1994-12-20 Positie-instelmechanisme.
NL9402170 1994-12-20

Publications (1)

Publication Number Publication Date
WO1996019634A1 true WO1996019634A1 (fr) 1996-06-27

Family

ID=19865046

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL1995/000432 WO1996019634A1 (fr) 1994-12-20 1995-12-20 Mecanisme de reglage de position

Country Status (3)

Country Link
AU (1) AU4401496A (fr)
NL (1) NL9402170A (fr)
WO (1) WO1996019634A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2842859A1 (fr) * 2002-07-25 2004-01-30 Somfy Dispositif de protection solaire motorise comprenant un moyen de guidage du cable d'alimentation du moteur

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2522753A1 (fr) * 1982-03-05 1983-09-09 Int Standard Electric Corp Moteur avec reducteur a arbre de sortie a profil femelle et piece d'insertion associee
DE3904763A1 (de) * 1988-04-13 1989-10-26 Adriano Torresan Verglasungsanordnung, insbesondere zum schutz gegen sonneneinstrahlung

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2522753A1 (fr) * 1982-03-05 1983-09-09 Int Standard Electric Corp Moteur avec reducteur a arbre de sortie a profil femelle et piece d'insertion associee
DE3904763A1 (de) * 1988-04-13 1989-10-26 Adriano Torresan Verglasungsanordnung, insbesondere zum schutz gegen sonneneinstrahlung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2842859A1 (fr) * 2002-07-25 2004-01-30 Somfy Dispositif de protection solaire motorise comprenant un moyen de guidage du cable d'alimentation du moteur
WO2004011759A1 (fr) * 2002-07-25 2004-02-05 Somfy Sas Dispositif de protection solaire motorise

Also Published As

Publication number Publication date
NL9402170A (nl) 1996-08-01
AU4401496A (en) 1996-07-10

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