EP0770980B1 - Dispositif pour la représentation selon le choix d'images sélectionnées - Google Patents

Dispositif pour la représentation selon le choix d'images sélectionnées Download PDF

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Publication number
EP0770980B1
EP0770980B1 EP19960202905 EP96202905A EP0770980B1 EP 0770980 B1 EP0770980 B1 EP 0770980B1 EP 19960202905 EP19960202905 EP 19960202905 EP 96202905 A EP96202905 A EP 96202905A EP 0770980 B1 EP0770980 B1 EP 0770980B1
Authority
EP
European Patent Office
Prior art keywords
teeth
circular segment
members
recess
cam
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
EP19960202905
Other languages
German (de)
English (en)
Other versions
EP0770980A2 (fr
EP0770980A3 (fr
Inventor
Ulbe Jan Lanting
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.)
Assembla Lichtreklame BV
Original Assignee
Assembla Lichtreklame 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
Application filed by Assembla Lichtreklame BV filed Critical Assembla Lichtreklame BV
Publication of EP0770980A2 publication Critical patent/EP0770980A2/fr
Publication of EP0770980A3 publication Critical patent/EP0770980A3/fr
Application granted granted Critical
Publication of EP0770980B1 publication Critical patent/EP0770980B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F11/00—Indicating arrangements for variable information in which the complete information is permanently attached to a movable support which brings it to the display position
    • G09F11/02—Indicating arrangements for variable information in which the complete information is permanently attached to a movable support which brings it to the display position the display elements being secured to rotating members, e.g. drums, spindles
    • G09F11/025—Indicating arrangements for variable information in which the complete information is permanently attached to a movable support which brings it to the display position the display elements being secured to rotating members, e.g. drums, spindles the members being rotated simultaneously, each face of the member carrying a part of the sign

Definitions

  • the invention relates to a device for at choice reproducing a selection of two or three representations provided with display panels, each having two respectively three mainly rectangular display faces mounted in a row side by side and which are rotatable around mutually parallel axes, the display faces in two respectively three rotating positions with their edges adjoining the edges of the display faces situated alongside, wherewith a drive is present coupled with each of the display panels by means of a driving member, which has a stabilisation plane for a driven member of the display face and an interrupted circular segment, a coupling member connected to the driving member, which lets the driven member undergo a beginning of a rotation, after which it comes into the path of a recess of the circular segment to be driven till it comes out of the recess of the circular segment by its own rotation.
  • EP-A-0 539 308 An example of driving unit which tries to solve the above problems is known by EP-A-0 539 308. Such a disclosure forms the basis for the preamble of claim 1.
  • the play between the moving parts should be minimized because even the slightest rattling of the display panels due to the wind, which display panels with a normal sized device may have a total weight of several hundred kilos, impose a considerable load on the driving device.
  • the object of the invention is to improve the known device, that is to lower further the friction and to overcome the play between the moving parts.
  • the essential features of such an invention are defined in the characterizing portion of present claim 1.
  • the contact surface of the position fixation member, in the fixation position, with the stabilisation plane of the driving member is restricted to small planes at the flanges of respective teeth at respective sides of the recess between the teeth. With the distance between these contact surfaces the stabilization is guaranteed, while the friction between these members in this orientation is reduced to a minimum.
  • the bevel is steeper to the centre of the circular segment. Even more preferably it is provided that this side varies from a flat to a curved side near the centre of the circular segment. Apart from enabling a continuous contact, this also increases considerably the smoothness of the rolling of movement between the coupling member and the driven member.
  • the part of the driven member contacting the coupling member preferably is two- or three-tooth.
  • the coupling member is symmetrical with respect to a line through the rotation axis of the circular segment and that the teeth of the two- or three-tooth member are symmetrical with respect to a line through the axis of said member.
  • a further improvement in the operation of the driven member is obtained by providing that the position fixation member fixedly connected to the part of the driven member cooperating with the coupling member having two or three teeth with a tapered end with a small rounding off at the top and between the successive teeth a circular-segment-shaped recess.
  • the teeth With the recesses between the teeth, the teeth only have relatively small faces at their tapered ends, which permits for a better fit of the teeth in the opening in the circular segment.
  • the contact surface of the opening is made up of two planes with an obtuse angle between the planes.
  • the first plane in the opening to contact a tooth being nearer to the centre of the circular segment, than the second plane, and the angles of the planes with respect to the flange of a tooth being such that in the respective positions the rotational movement is transmitted with the least slip between the moving parts.
  • the recesses between the teeth also have the result that the point of engagement between the circular segment and the position fixation member, can never be closer to the centre of the position fixation member than the intersection line between a tapered teeth end and a respective recess, as a result of which the momentum between the circular segment and the position fixation member remains basically the same during the contact between these parts.
  • a common drive shaft is indicated with 5, with which a number of display panels, rotatable around axes 3, can be driven.
  • the display panels have rectangular display faces adjacent to each other in the position when a representation is shown. Usually these display faces are the lateral faces of triangular prisms, but naturally the invention is also applicable for constructions with only two display faces, in which case an angle of 180° is necessary in stead of an angle of 120° for switching between representations.
  • the driving member 6 coupled with the input axis 5 has a circular segment 17 provided with a cam 18 (vide fig. 3 and 4), which is meant to cooperate with a coupling member 27 of the driven member 32, to rotate it so far that a tooth of the driven member comes in engagement with an opening in the circular segment 17.
  • a cam 18 (vide fig. 3 and 4), which is meant to cooperate with a coupling member 27 of the driven member 32, to rotate it so far that a tooth of the driven member comes in engagement with an opening in the circular segment 17.
  • the driven member is positioned with a tooth in the opening in the circular segment 17, and is exactly in the middle between successive presentations, with a point of the triangle cross-section of the prism pointing upward.
  • the axis 5 in this figure is indicated with an interrupted line.
  • the coupling member 27 has three teeth 28, 29 and 30 (vide fig. 4) with there between circular shaped transitional members 31, the teeth having convex shaped flanges. In the coupling position one of the teeth 28, 29 and 30 in fig. 4 is taken by the cam 18 and by the shape and the inclination thereof and the shape of the teeth a very gradual start of the movement of the coupling member 27 is initiated.
  • the coupling member 27 is fixedly coupled with the position fixation member 32 having three teeth 33, 34 and 35, which when rotating the combined driving member 27, 32 can protrude in an opening 19 of the circular segment 17 and have such a shaped, that they have virtually no play in said opening.
  • This opening has inclined boundary walls 16,25 with boundary edges 23 and 24, with an obtuse angle between these planes, as can be seen more clearly in fig.3 and 6.
  • the teeth 33,34 and 35 of the position fixation member 32 have relatively small flatted parts near their ends, which come to rest against the plane of the circular segment 17 in the fixation position.
  • the small surface area in contact with the circular segment means only little friction, while the mutual distance between these parts is sufficient to guarantee a fixation without play.
  • the circular segment 17, position fixation member 32, coupling member 27 and cam 18 are designed and cooperating in a manner such that during the period in which the position is fixed and during the switching between successive representations, the friction is at a minimum and, equally important, with no play between the moving parts. Important herewith is that during a larger part of the period needed for switching between representations, a tooth of the position fixation member is in engagement with circular segment 17, at the same time that cam 18 is in engagement with coupling member 27.
  • these driving parts of the device according to the invention can be manufactured at relatively low costs.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Toys (AREA)
  • Displays For Variable Information Using Movable Means (AREA)

Claims (8)

  1. Dispositif pour reproduire au choix une sélection de deux ou trois représentations pourvu de panneaux d'affichage (1), comportant chacun deux, respectivement trois, surfaces d'affichage principalement rectangulaires montées en une rangée côte à côte et qui sont rotatifs autour d'axes mutuellement parallèles (3), les surfaces d'affichage dans deux, respectivement trois, positions de rotation ayant leurs bords contigus aux bords des surfaces d'affichage situées à côté, le dispositif comprenant une unité d'entraínement, un arbre d'entraínement (5) et des moyens de transmission entre l'arbre d'entraínement (5) et chacun des axes (3) des panneaux d'affichage (1), consistant en des éléments d'entraínement (6) sur l'arbre d'entraínement (5) et des éléments d'accouplement à dents (27, 32) avec trois dents (28, 29, 30 ; 33, 34, 35) sur les axes (3), les dents (28, 29, 30 ; 33, 34, 35) des éléments d'accouplement étant destinées à se mettre en prise avec les éléments d'entraínement (6), caractérisé en ce que :
    les éléments d'entraínement (6) comportent un segment circulaire (17) à peu près perpendiculaire à l'arbre d'entraínement (5) pourvu d'un évidement (19) au niveau du bord extérieur et, radiale par rapport à l'évidement (19), d'une came (18) sur la face avant circulaire du segment circulaire (17),
    chaque élément d'accouplement (27, 32) consiste en des premier (27) et deuxième (32) éléments coaxiaux à dents, les dents (28, 29, 30 ; 33, 34, 35) des premier et deuxième éléments (27, 32) étant espacées les unes par rapport aux autres d'un angle de 60°, le premier élément (27) se mettant en prise avec la came (18) pour faire tourner un panneau d'affichage (1) et le deuxième élément (28) se mettant en prise avec l'évidement (19) pendant une rotation vers une position suivante et mettant la face avant du segment circulaire (17) en butée avec les côtés de deux dents (33, 34, 35) après le passage de l'évidement (19), servant, de ce fait, de moyens d'immobilisation en position.
  2. Dispositif selon la revendication 1, caractérisé en ce que la came (18) dans sa direction entraínée est biseautée du côté (21) qui est en contact avec le premier élément (27).
  3. Dispositif selon la revendication 2, caractérisé en ce que le biseau est plus incliné vers le centre du segment circulaire (17).
  4. Dispositif selon la revendication 2 ou 3, caractérisé en ce que, plus près du centre du segment circulaire (17), le côté (21) est de forme concave.
  5. Dispositif selon les revendications 2 à 4, caractérisé en ce que la came (18) est symétrique par rapport à une droite passant par l'axe de rotation du segment circulaire (17) et en ce que les dents (28, 29, 30) du premier élément à dents (27) sont symétriques par rapport à une droite passant par l'axe dudit élément.
  6. Dispositif selon les revendications 2 à 5, caractérisé en ce que les dents (28, 29, 30) du premier élément (27) ont chacune deux flancs sphériques et, entre les flancs de dents successives (28, 29, 30), une partie de forme circulaire.
  7. Dispositif selon les revendications 1 à 6, caractérisé en ce que les dents (33, 34, 35) du deuxième élément d'immobilisation en position (32) ont une extrémité effilée avec un petit arrondi sur le dessus et, entre des dents successives (33, 34, 35), au moins un évidement en forme de segment circulaire.
  8. Dispositif selon une ou plusieurs des revendications précédentes, caractérisé en ce que les éléments d'entraínement sont entraínés ensemble par un moteur à courant alternatif à fonctionnement automatique.
EP19960202905 1995-10-24 1996-10-23 Dispositif pour la représentation selon le choix d'images sélectionnées Expired - Lifetime EP0770980B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1001491 1995-10-24
NL1001491A NL1001491C1 (nl) 1995-10-24 1995-10-24 Inrichting voor het naar keuze weergeven van een uitgekozen beeld.

Publications (3)

Publication Number Publication Date
EP0770980A2 EP0770980A2 (fr) 1997-05-02
EP0770980A3 EP0770980A3 (fr) 1999-02-03
EP0770980B1 true EP0770980B1 (fr) 2002-04-03

Family

ID=19761747

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19960202905 Expired - Lifetime EP0770980B1 (fr) 1995-10-24 1996-10-23 Dispositif pour la représentation selon le choix d'images sélectionnées

Country Status (5)

Country Link
EP (1) EP0770980B1 (fr)
DE (1) DE69620340T2 (fr)
ES (1) ES2175026T3 (fr)
NL (1) NL1001491C1 (fr)
PT (1) PT770980E (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2797502B1 (fr) * 1999-08-12 2002-01-11 Solsystems Dispositif d'entrainement des prismes rotatifs d'un systeme d'affichage-signalisation
US20030005612A1 (en) * 2001-02-14 2003-01-09 Limax Electronics Co., Ltd. Desktop decoration with movable advertisement signs
FR2889343B1 (fr) * 2005-07-26 2007-10-19 Mecatec Sarl Soc Dispositif d'entrainement d'organes mobiles prismatiques pour panneaux publicitaires
FR2896905B1 (fr) * 2006-01-30 2008-04-11 Mecatec Soc Par Actions Simpli Dispositif d'entrainement pour panneaux d'affichage a prismes rotatifs
CN105590563B (zh) * 2016-03-12 2017-02-01 徐美琴 三面翻广告系统
CN109345972B (zh) * 2018-12-04 2020-08-18 项炜涛 一种三面翻广告牌

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5233772A (en) * 1990-12-21 1993-08-10 3-Message Display Limited Multi-message sign
FR2683072B1 (fr) * 1991-10-25 1995-08-25 Mecatec Panneau publicitaire forme par une serie d'organes mobiles prismatiques.
DE4328514A1 (de) * 1993-08-25 1995-03-02 Schuler Reinhardt Antrieb für Anzeigeelemente

Also Published As

Publication number Publication date
ES2175026T3 (es) 2002-11-16
EP0770980A2 (fr) 1997-05-02
DE69620340T2 (de) 2002-11-21
PT770980E (pt) 2002-09-30
EP0770980A3 (fr) 1999-02-03
DE69620340D1 (de) 2002-05-08
NL1001491C1 (nl) 1997-04-25

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