EP0729127B1 - Display device for variable signs - Google Patents

Display device for variable signs Download PDF

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Publication number
EP0729127B1
EP0729127B1 EP95118203A EP95118203A EP0729127B1 EP 0729127 B1 EP0729127 B1 EP 0729127B1 EP 95118203 A EP95118203 A EP 95118203A EP 95118203 A EP95118203 A EP 95118203A EP 0729127 B1 EP0729127 B1 EP 0729127B1
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EP
European Patent Office
Prior art keywords
display
driven shaft
rotation
spacing
lever arm
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Expired - Lifetime
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EP95118203A
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German (de)
French (fr)
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EP0729127A1 (en
Inventor
Erich Dr.-Ing. Killinger
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Dambach Werke GmbH
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Dambach Werke GmbH
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Publication of EP0729127A1 publication Critical patent/EP0729127A1/en
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    • 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 change display device with at least a polygonal or lamellar cross-section that is rotatable about an axis Indicator body that has several on the outside at equal angular intervals has rotatable display surfaces to a visible side, with a drive motor and with a transmission device arranged between the latter and the display body, the one drive shaft and one coupled to the display body Has output shaft.
  • a change display device of this type is known in EP 0 370 414 A2 expelled.
  • the rotation of the drive shaft of an electric motor is over a conventional gear on an output shaft connected to an indicator body transferred so that the different display areas of the display body for Visible side can be turned.
  • the curve shape of the speed curve of the Output shaft corresponds to that except for the amount of the speed the drive shaft.
  • the rotation of the output shaft is controlled by a lever mechanism transferred to other display bodies for synchronous movement.
  • the load on the motor is relative, especially in the initial phase of rotation high, so that a relatively powerful motor or a corresponding electrical Control must be provided.
  • the invention has for its object a change display device to create the type specified at the beginning, measured in relation to the to be moved Indicators, a motor with relatively low power can be used and the control effort is low.
  • the transmission device between the drive shaft and the output shaft has a gear section with which one during of the display change even rotation speed of the drive shaft is convertible into a rotational speed of the output shaft, which is constant from a minimum initial value to a current maximum value increases and then steadily to a minimum value at the end of the display change falls.
  • the power required is Rotating the display body especially in the initial phase of the display change low because the display body or bodies have a very low rotational speed gradually brought up to the maximum rotation speed will be).
  • the measures according to the invention also have an effect favorable in the final phase of the display change, because of the gradual Decrease of the rotational movement to the minimum value and finally to zero a minimal braking force is required and the indicator body exactly in the display position can be rotated.
  • Display bodies such as those used for large-scale displays in road traffic the specified measures have an advantageous effect.
  • a Another advantage is that the specified structure of the gear device a wind force acting on the display area practically no torsion the indicator body causes.
  • a simple and reliable construction is such that the axes of rotation the input shaft and the output shaft in parallel under a first fixed Are aligned with each other and at their mutually facing end regions each have a lever arm extending transversely to the axis of rotation that the End of a lever arm in a second of the associated axis of rotation fixed Distance is provided with a coupling member, the second distance being larger first the distance that the coupling member in a guideway of the other Lever arms during the rotation in the input shaft and the output shaft radial is guided so that between the coupling member and the axis of rotation of the other Lever arm results in a variable distance during rotation, and that in a Display position of the display body, the two lever arms in an angular position are aligned in which the variable distance is minimal while it is rotating the axis of rotation is maximum by 180 ° and on further rotation on the Minimum returns at 360 °. After that is the maximum rotation speed the output shaft is reached with a rotation of 180 °, i.e. halfway during the display change
  • a full revolution of the input or output shaft is achieved exactly when it is provided that the gear device between the output shaft and the Indicator body has a reduction gear part that is a full revolution the output shaft in a the angular distance between two successive Implemented display areas corresponding rotation angle.
  • the structure in be made in such a simple way that the reduction gear part has two intermeshing gears, the tooth ratio of which is the angle of rotation ratio of output shaft and indicator body is inversely proportional.
  • the coupling between the input shaft and the output shaft can, for example be carried out that the coupling member parallel to the axes of rotation of the Has input and output shaft aligned pin, and that the guideway runs in a straight line and is formed by a groove or a slot. This ensures a safe coupling with a simple design of the coupling mechanism reached.
  • a smooth guide results from the fact that the coupling link is mounted in the guideway by means of a roller.
  • the one, provided with the coupling member lever arm on the Output shaft is attached, while the other is provided with the guideway Lever arm is attached to the drive shaft, and that at the minimum of variable distance this is smaller than the fixed distance between the axes of rotation the drive shaft and the output shaft, there is the possibility a very gentle start of the output shaft and the indicator body (s) realize because the variable lever arm at the beginning and at the end of the display change can be kept very small.
  • the display body 4 is at Display change rotated by means of a drive mechanism that a motor M, a drive shaft 5 driven via an angular gear part and an output shaft 6 has.
  • the tooth ratio is chosen so that with one revolution of the output shaft 6 a third revolution of the display body 4 takes place and for the display change from one Display area on an adjacent display area just one revolution of the Output shaft 6 is required.
  • the rotational position of the display body 4 is determined by a detector device 8 detects, for example, three coding letters on one axis having.
  • the axes of rotation of the drive shaft 5 and the output shaft 6 are parallel to each other aligned and offset by a distance a (see Fig. 2A).
  • a lever arm 5.1 or 6.1 is defined to the opposite end regions of the drive shaft 5 and the output shaft 6, a lever arm 5.1 or 6.1 is defined.
  • the lever arm 5.1 has its side facing the output shaft 6 has a U-shaped groove, while lever arm 6.1 fixed on the output shaft 6 on the drive shaft 5 thereof facing side has a pin 6.11 in the U-shaped groove of the other lever arm 5.1 is guided.
  • the pin 6.11 is parallel to the axes of rotation the drive shaft 5 and output shaft 6 aligned and contributes to the rotatable Bear a roller in the U-shaped groove.
  • Fig. 2A is the parallel distance b of the axis of the pin 6.11 from the axis of rotation of the output shaft 6 larger than the distance a between the axes of rotation of the drive shaft 5 and the output shaft 6.
  • the lever arm 6.1 fixed on the output shaft 6 shows here in the direction of the distance of the axis of rotation 5, while on the drive shaft 5 fixed lever 5.1 shows in the same direction.
  • the drive shaft 5 and the axis of the pin 6.11 results in a distance c that is variable and in the starting position shown in FIG. 2A the difference between corresponds to the distances b and a.
  • the variable distance c is smaller here than the fixed distance a between the axes of rotation of the shaft 5 and the Output shaft 6.
  • FIGS. 3A to 3C show a representation similar to that in FIG. 1, the various display areas 1 to 3 being arranged on the visible side are.
  • FIGS. 3A to 3C show that this is always the case if the described gear section has the same starting position.
  • the drive lever arm in a partially sectioned Representation shown so that the rolling pin in the U-shaped groove is recognizable.
  • the Transmission of the rotation between the output shaft 6 and the display body 4 takes place here via a bevel gear with bevel gears 6.2 'and 7', the tooth ratio is also chosen so that at a full revolution of the output shaft 6 the display body 4 is rotated just so far that the next display area appears on the visible side. In the present case it is because of of the three display areas, the tooth ratio of the bevel gear 7 'to the bevel gear 6.2' three to one.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Displays For Variable Information Using Movable Means (AREA)
  • Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
  • Water Treatment By Sorption (AREA)
  • Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)

Abstract

The rotary body (4) has indicator surfaces at regular angular intervals and brought in turn into the display position. A gear train between the motor (M) and the body incorporates a driving shaft (5), and a driven shaft (6) coupled to the body. A portion (5.1,6.1,6.11) of the train converts the constant speed of the driving shaft during changeover into a driven shaft speed. The speed initially rises steadily from a minimum to a momentary maximum, and then decreases steadily to a minimum at the end of the changeover. The axes of the shafts can be parallel and at a constant first distance apart, having radial levers (5.1) at their ends towards each other. A coupler (6.11) on one lever is at a distance from its shaft greater than the first distance. During rotation the distance varies between the coupler and the axis of rotation of the other lever.

Description

Die Erfindung bezieht sich auf eine Wechselanzeigevorrichtung mit mindestens einem um eine Achse drehbaren im Querschnitt polygonalen oder lamellenförmigen Anzeigekörper, der auf seiner Außenseite in gleichen Drehwinkelabständen mehrere zu einer Sichtseite drehbare Anzeigeflächen aufweist, mit einem Antriebsmotor und mit einer zwischen diesem und dem Anzeigekörper angeordneten Getriebevorrichtung, die eine Antriebswelle und eine mit dem Anzeigekörper gekoppelte Abtriebswelle besitzt.The invention relates to a change display device with at least a polygonal or lamellar cross-section that is rotatable about an axis Indicator body that has several on the outside at equal angular intervals has rotatable display surfaces to a visible side, with a drive motor and with a transmission device arranged between the latter and the display body, the one drive shaft and one coupled to the display body Has output shaft.

Eine Wechselanzeigevorrichtung dieser Art ist in der EP 0 370 414 A2 als bekannt ausgewiesen. Hierbei wird die Rotation der Antriebswelle eines Elektromotors über ein übliches Getriebe auf eine mit einem Anzeigekörper verbundene Abtriebswelle übertragen, so daß die verschiedenen Anzeigeflächen des Anzeigekörpers zur Sichtseite gedreht werden. Die Kurvenform des Geschwindigkeitsverlaufs der Abtriebswelle entspricht hierbei bis auf den Betrag der Geschwindigkeit derjenigen der Antriebswelle. Über einen Hebelmechanismus wird die Drehung der Abtriebswelle zur synchronen Bewegung auf weitere Anzeigekörper übertragen. Hierdurch ist die Belastung des Motors insbesondere in der Anfangsphase der Rotation relativ hoch, so daß ein relativ leistungsfähiger Motor oder eine entsprechende elektrische Steuerung vorgesehen werden muß.A change display device of this type is known in EP 0 370 414 A2 expelled. Here, the rotation of the drive shaft of an electric motor is over a conventional gear on an output shaft connected to an indicator body transferred so that the different display areas of the display body for Visible side can be turned. The curve shape of the speed curve of the Output shaft corresponds to that except for the amount of the speed the drive shaft. The rotation of the output shaft is controlled by a lever mechanism transferred to other display bodies for synchronous movement. Hereby the load on the motor is relative, especially in the initial phase of rotation high, so that a relatively powerful motor or a corresponding electrical Control must be provided.

Der Erfindung liegt die Aufgabe zugrunde, eine Wechselanzeigevorrichtung der eingangs angegebenen Art zu schaffen, bei der, gemessen an den zu bewegenden Anzeigekörpern, ein Motor mit relativ geringer Leistung einsetzbar und der Steuerungsaufwand gering ist.The invention has for its object a change display device to create the type specified at the beginning, measured in relation to the to be moved Indicators, a motor with relatively low power can be used and the control effort is low.

Diese Aufgabe wird mit den im Patentanspruch 1 genannten Merkmalen gelöst. Hiernach ist also vorgesehen, daß die Getriebevorrichtung zwischen der Antriebswelle und der Abtriebswelle einen Getriebeabschnitt aufweist, mit dem eine während des Anzeigewechsels gleichmäßige Rotationsgeschwindigkeit der Antriebswelle in eine Rotationsgeschwindigkeit der Abtriebswelle umsetzbar ist, die stetig von einem minimalen anfänglichen Wert auf einen momentanen maximalen Wert steigt und anschließend stetig auf einenminimalen Wert am Ende des Anzeigewechsel fällt.This object is achieved with the features mentioned in claim 1. Accordingly, it is provided that the transmission device between the drive shaft and the output shaft has a gear section with which one during of the display change even rotation speed of the drive shaft is convertible into a rotational speed of the output shaft, which is constant from a minimum initial value to a current maximum value increases and then steadily to a minimum value at the end of the display change falls.

Infolge der derart aufgebauten Getriebevorrichtung ist die benötigte Leistung zum Drehen des Anzeigekörpers insbesondere auch in der Anfangsphase des Anzeigewechsels gering, da der bzw. die Anzeigekörper von einer sehr geringen Rotationsgeschwindigkeit aus allmählich auf die maximale Rotationsgeschwindigkeit gebracht wird (werden). Auch wirken sich die erfindungsgemäßen Maßnahmen günstig in der Endphase des Anzeigewechsels aus, da durch den allmählichen Rückgang der Rotationsbewegung auf den minimalen Wert und schließlich auf Null eine minimale Bremskraft erforderlich ist und der Anzeigekörper exakt in die Anzeigestellung gedreht werden kann. Insbesondere bei verhältnismäßig schweren Anzeigekörpern, wie sie zum Beispiel für großflächige Anzeigen im Straßenverkehr benötigt werden, wirken sich die angegebenen Maßnahmen vorteilhaft aus. Ein weiterer Vorteil besteht darin, daß durch den angegebenen Aufbau der Getriebevorrichtung eine auf die Anzeigefläche wirkende Windkraft praktisch keine Verdrehung der Anzeigekörper bewirkt.As a result of the transmission device constructed in this way, the power required is Rotating the display body especially in the initial phase of the display change low because the display body or bodies have a very low rotational speed gradually brought up to the maximum rotation speed will be). The measures according to the invention also have an effect favorable in the final phase of the display change, because of the gradual Decrease of the rotational movement to the minimum value and finally to zero a minimal braking force is required and the indicator body exactly in the display position can be rotated. Especially with relatively heavy ones Display bodies, such as those used for large-scale displays in road traffic the specified measures have an advantageous effect. A Another advantage is that the specified structure of the gear device a wind force acting on the display area practically no torsion the indicator body causes.

Ein einfacher und dabei zuverlässig arbeitender Aufbau ist derart, daß die Drehachsen der Antriebswelle und der Abtriebswelle parallel unter einem ersten festen Abstand zueinander ausgerichtet sind und an ihren einander zugekehrten Endbereichen je einen quer zur Drehachse verlaufenden Hebelarm aufweisen, daß das Ende des einen Hebelarms in einem von der zugehörigen Drehachse zweiten festen Abstand mit einem Koppelglied versehen ist, wobei der zweite Abstand größer ist als erste der Abstand, daß das Koppelglied in einer Führungsbahn des anderen Hebelarms während der Rotation in der Antriebswelle und der Abtriebswelle radial geführt ist, so daß sich zwischen dem Koppelglied und der Drehachse des anderen Hebelarms ein während der Rotation variabler Abstand ergibt, und daß in einer Anzeigestellung des Anzeigekörpers die beiden Hebelarme in einer Winkelstellung ausgerichtet sind, in der der variable Abstand minimal ist, während er bei Rotation der Drehachsen um 180 ° maximal ist und bei weiterer Rotation wieder auf das Minimum bei 360 ° zurückkehrt. Hiernach ist die maximale Rotationsgeschwindigkeit der Abtriebswelle bei einer Drehung um 180 ° erreicht, d.h., auf halbem Weg während des Anzeigewechsels. Ein neuer Anzeigewechsel beginnt somit wieder bei 0°, d.h., aus der Ausgangsstellung der Antriebs- bzw. Abtriebswelle.A simple and reliable construction is such that the axes of rotation the input shaft and the output shaft in parallel under a first fixed Are aligned with each other and at their mutually facing end regions each have a lever arm extending transversely to the axis of rotation that the End of a lever arm in a second of the associated axis of rotation fixed Distance is provided with a coupling member, the second distance being larger first the distance that the coupling member in a guideway of the other Lever arms during the rotation in the input shaft and the output shaft radial is guided so that between the coupling member and the axis of rotation of the other Lever arm results in a variable distance during rotation, and that in a Display position of the display body, the two lever arms in an angular position are aligned in which the variable distance is minimal while it is rotating the axis of rotation is maximum by 180 ° and on further rotation on the Minimum returns at 360 °. After that is the maximum rotation speed the output shaft is reached with a rotation of 180 °, i.e. halfway during the display change. A new display change thus begins again 0 °, i.e. from the starting position of the input or output shaft.

Eine volle Umdrehung der Antriebs- bzw. Abtriebswelle wird exakt erreicht, wenn vorgesehen ist, daß die Getriebevorrichtung zwischen der Abtriebswelle und dem Anzeigekörper einen Untersetzungsgetriebeteil aufweist, der eine volle Umdrehung der Abtriebswelle in einen dem Drehwinkelabstand zweier aufeinanderfolgender Anzeigeflächen entsprechenden Drehwinkel umsetzt. Hierzu kann der Aufbau in einfacher Weise derart vorgenommen werden, daß der Untersetzungsgetriebeteil zwei aufeinander kämmende Zahnräder aufweist, deren Zahnverhältnis dem Drehwinkelverhältnis von Abtriebswelle und Anzeigekörper umgekehrt proportional ist.A full revolution of the input or output shaft is achieved exactly when it is provided that the gear device between the output shaft and the Indicator body has a reduction gear part that is a full revolution the output shaft in a the angular distance between two successive Implemented display areas corresponding rotation angle. For this purpose, the structure in be made in such a simple way that the reduction gear part has two intermeshing gears, the tooth ratio of which is the angle of rotation ratio of output shaft and indicator body is inversely proportional.

Die Koppelung zwischen der Antriebswelle und der Abtriebswelle kann bspw. so ausgeführt sein, daß das Koppelglied einen parallel zu den Drehachsen der Antriebs- und Abtriebswelle ausgerichteten Zapfen aufweist, und daß die Führungsbahn geradlinig verläuft und durch eine Nut oder einen Schlitz gebildet ist. Hierdurch wird eine sichere Kopplung bei einfacher Ausbildung des Koppelmechnismus erreicht. Eine leichtgängige Führung ergibt sich dadurch, daß das Koppelglied mittels einer Rolle in der Führungsbahn gelagert ist.The coupling between the input shaft and the output shaft can, for example be carried out that the coupling member parallel to the axes of rotation of the Has input and output shaft aligned pin, and that the guideway runs in a straight line and is formed by a groove or a slot. This ensures a safe coupling with a simple design of the coupling mechanism reached. A smooth guide results from the fact that the coupling link is mounted in the guideway by means of a roller.

Eine exakte Positionierung der Anzeigefläche des Anzeigekörpers auf der Sichtseite und das exakte Anfahren der Ausgangsstellung des Antriebsmechanismus wird dadurch erzielt, daß eine Detektoreinrichtung vorgesehen ist, mit der die Positionierung der jeweiligen Anzeigefläche in der Anzeigeposition feststellbar ist.An exact positioning of the display surface of the display body on the visible side and the exact approach to the starting position of the drive mechanism achieved in that a detector device is provided with which the positioning of the respective display area can be determined in the display position.

Ist vorgesehen, daß der eine, mit dem Koppelglied versehene Hebelarm an der Abtriebswelle angebracht ist, während der andere, mit der Führungsbahn versehene Hebelarm an der Antriebswelle angebracht ist, und daß bei dem Minimum des variablen Abstandes dieser kleiner ist als der feste Abstand zwischen den Drehachsen der Antriebswelle und der Abtriebswelle, so ergibt sich die Möglichkeit, einen sehr sanften Anlauf der Abtriebswelle und des bzw. der Anzeigekörper zu verwirklichen, da der variable Hebelarm zu Beginn und am Ende des Anzeigewechsels sehr klein gehalten werden kann.It is provided that the one, provided with the coupling member lever arm on the Output shaft is attached, while the other is provided with the guideway Lever arm is attached to the drive shaft, and that at the minimum of variable distance this is smaller than the fixed distance between the axes of rotation the drive shaft and the output shaft, there is the possibility a very gentle start of the output shaft and the indicator body (s) realize because the variable lever arm at the beginning and at the end of the display change can be kept very small.

Die Erfindung wird nachfolgend anhand von Ausführungsbeispielen unter Bezugnahme auf die Zeichnungen näher erläutert. Es zeigen:

Fig. 1
eine perspektivische ausschnittsweise Darstellung einer Wechselanzeigevorrichtung, aus der ein Antriebsmechanismus ersichtlich ist,
Fig. 2A bis 2D
eine Folge von Stellungsbildern des Antriebsmechanismus für verschiedene Drehstellungen, und zwar links in Draufsicht und rechts in Seitenansicht,
Fig.3A bis 3C
eine gegenüber der Fig. 1 geringfügig abgewandelte Dar stellung, wobei in den Fig. A bis C verschiedene Anzeigeflächen zur Sichtseite gerichtet sind, und
Fig. 4
eine Seitenansicht eines weiteren Antriebsmechanismus für eine Wechselanzeigevorrichtung.
The invention is explained in more detail below using exemplary embodiments with reference to the drawings. Show it:
Fig. 1
3 shows a perspective cutaway representation of a change indicator device, from which a drive mechanism can be seen,
2A to 2D
a sequence of position images of the drive mechanism for different rotational positions, namely on the left in plan view and on the right in side view,
Fig. 3A to 3C
a slightly modified compared to FIG. 1 Dar position, wherein in FIGS. A to C different display surfaces are directed to the visible side, and
Fig. 4
a side view of another drive mechanism for a change indicator.

Die Fig. 1 zeigt eine Wechselanzeigevorrichtung 10 mit einem Anzeigekörper 4 in Form eines dreiseitigen Prismas mit drei flachen, nach außen kehrbaren Anzeigeflächen 1, 2 und 3, wobei die sichtseitige Anzeigefläche 1 mit einer fett dargestellten Ziffer bezeichnet ist, während die beiden anderen Anzeigeflächen 2 und 3 mit in Hohlschrift dargestellten Ziffern bezeichnet sind. Der Anzeigekörper 4 wird beim Anzeigewechsel mittels eines Antriebsmechanismus gedreht, der einen Motor M, eine über ein Winkelgetriebeteil angetriebene Antriebswelle 5 und eine Abtriebswelle 6 aufweist. Zwischen der Abtriebswelle 6 und dem Anzeigekörper 4 ist ein Untersetzungsgetriebe mit Zahnrädern 6.2 und 7 angeordnet, deren Zahnverhältnis so gewählt ist, daß bei einer Umdrehung der Abtriebswelle 6 eine Drittel Umdrehung des Anzeigekörpers 4 erfolgt und für den Anzeigewechsel von einer Anzeigefläche auf eine benachbarte Anzeigefläche gerade eine Umdrehung der Abtriebswelle 6 erforderlich ist. Die Drehstellung des Anzeigekörpers 4 wird mittels einer Detektoreinrichtung 8 erfaßt, der bspw. drei Codierschreiben auf einer Achse aufweist. 1 shows a change display device 10 with a display body 4 in The shape of a three-sided prism with three flat, reversible display surfaces 1, 2 and 3, the visible side display area 1 being shown in bold Numeral is designated, while the other two display areas 2 and 3 with in Numbers shown in hollow letters are designated. The display body 4 is at Display change rotated by means of a drive mechanism that a motor M, a drive shaft 5 driven via an angular gear part and an output shaft 6 has. Between the output shaft 6 and the display body 4 is a Reduction gear with gears 6.2 and 7 arranged, the tooth ratio is chosen so that with one revolution of the output shaft 6 a third revolution of the display body 4 takes place and for the display change from one Display area on an adjacent display area just one revolution of the Output shaft 6 is required. The rotational position of the display body 4 is determined by a detector device 8 detects, for example, three coding letters on one axis having.

Die Drehachsen der Antriebswelle 5 und der Abtriebswelle 6 sind parallel zueinander ausgerichtet und um einen Abstand a (siehe Fig. 2A) versetzt. An den gegeneinander gerichteten Endbereichen der Antriebswelle 5 und der Abtriebswelle 6 ist jeweils ein Hebelarm 5.1 bzw. 6.1 festgelegt. Der Hebelarm 5.1 weist auf seiner der Abtriebswelle 6 zugewandten Seite eine U-förmige Nut auf, während der an der Abtriebswelle 6 festgelegte Hebelarm 6.1 auf seiner der Antriebswelle 5 zugewandten Seite einen Zapfen 6.11 aufweist, der in der U-förmigen Nut des anderen Hebelarms 5.1 geführt ist. Der Zapfen 6.11 ist parallel zu den Drehachsen der Antriebswelle 5 und Abtriebswelle 6 ausgerichtet und trägt zum drehbaren Lagern in der U-förmigen Nut eine Rolle. Wie ebenfalls aus Fig. 2A hervorgeht, ist der parallele Abstand b der Achse des Zapfens 6.11 von der Drehachse der Abtriebswelle 6 größer als der Abstand a zwischen den Drehachsen der Antriebswelle 5 und der Abtriebswelle 6.The axes of rotation of the drive shaft 5 and the output shaft 6 are parallel to each other aligned and offset by a distance a (see Fig. 2A). To the opposite end regions of the drive shaft 5 and the output shaft 6, a lever arm 5.1 or 6.1 is defined. The lever arm 5.1 has its side facing the output shaft 6 has a U-shaped groove, while lever arm 6.1 fixed on the output shaft 6 on the drive shaft 5 thereof facing side has a pin 6.11 in the U-shaped groove of the other lever arm 5.1 is guided. The pin 6.11 is parallel to the axes of rotation the drive shaft 5 and output shaft 6 aligned and contributes to the rotatable Bear a roller in the U-shaped groove. As is also apparent from Fig. 2A, is the parallel distance b of the axis of the pin 6.11 from the axis of rotation of the output shaft 6 larger than the distance a between the axes of rotation of the drive shaft 5 and the output shaft 6.

Durch die beschriebene Kopplung zwischen der Antriebswelle 5 und der Abtriebswelle 6 über die jeweiligen Hebelarme 5.1 und 6.1 und den in der U-förmigen Nut geführten Zapfen 6.11 ergibt sich während eines Rotationszyklus um 360° für die Abtriebswelle 6 eine andere Kurvenform der Rotationsgeschwindigkeit als bei der Antriebswelle 5, wie aus der Figurenfolge 2A bis 2D hervorgeht. Auf der linken Seite der Figurenfolge sind die Stellungen der beiden Hebelarme 5.1 und 6.1 in Draufsicht von der Antriebswelle 5 her dargestellt, während auf der rechten Seite eine Seitenansicht mit dem Motor M, der Antriebswelle 5, dem daran festgelegten Hebelarm 5.1, dem Zapfen 6.11, dem Hebelarm 6.1, der Abtriebswelle 6 und einer Seite des Antriebskörpers 4 gezeigt ist. In der Fig. 2A ist die Situation dargestellt, wie sie bei einer zur Sichtseite gekehrten Anzeigefläche, zum Beispiel der Anzeigefläche 1, vorliegt. Der an der Abtriebswelle 6 festgelegte Hebelarm 6.1 zeigt hierbei in Richtung des Abstandes der Drehachse 5, während der an der Antriebswelle 5 festgelegte Hebelarm 5.1 in dieselbe Richtung zeigt. Wie ersichtlich, ist der feste Abstand zwischen der Drehachse der Abtriebswelle 6 und dem an dem Hebelarm 6.1 angeordneten Zapfen 6.11 b größer als der Abstand a zwischen den Drehachsen der Antriebswelle 5 und der Abtriebswelle 6. Zwischen der Drehachse der Antriebswelle 5 und der Achse des Zapfens 6.11 ergibt sich ein Abstand c, der variabel ist und in der in Fig. 2A gezeigten Ausgangsstellung der Differenz zwischen den Abständen b und a entspricht. Hierbei ist der variable Abstand c kleiner als der feste Abstand a zwischen den Drehachsen der Antribswelle 5 und der Abtriebswelle 6.Through the described coupling between the drive shaft 5 and the output shaft 6 on the respective lever arms 5.1 and 6.1 and in the U-shaped groove guided pin 6.11 results during a rotation cycle by 360 ° for the Output shaft 6 a different curve shape of the rotational speed than in the Drive shaft 5, as can be seen from the sequence of figures 2A to 2D. On the left Side of the sequence of figures are the positions of the two lever arms 5.1 and 6.1 in Top view from the drive shaft 5 shown while on the right side a side view with the motor M, the drive shaft 5, the attached Lever arm 5.1, the pin 6.11, the lever arm 6.1, the output shaft 6 and one Side of the drive body 4 is shown. The situation is shown in FIG. 2A, as with a display surface turned towards the visible side, for example the display surface 1, is present. The lever arm 6.1 fixed on the output shaft 6 shows here in the direction of the distance of the axis of rotation 5, while on the drive shaft 5 fixed lever 5.1 shows in the same direction. As can be seen, the fixed distance between the axis of rotation of the output shaft 6 and at the Lever arm 6.1 arranged pins 6.11 b larger than the distance a between the Axes of rotation of the input shaft 5 and the output shaft 6. Between the axis of rotation The drive shaft 5 and the axis of the pin 6.11 results in a distance c that is variable and in the starting position shown in FIG. 2A the difference between corresponds to the distances b and a. The variable distance c is smaller here than the fixed distance a between the axes of rotation of the shaft 5 and the Output shaft 6.

Aus Fig. 2B ist ersichtlich, daß sich bei einer Drehung des antriebsseitigen Hebelarms 5.1 um 90° der abtriebsseitige Hebelarm 6.1 um einen wesentich geringeren Drehwinkel gedreht hat. Gemäß Fig. 2C hat sich der antriebsseitige Hebelarm 5.1 um deutlich mehr als 90° gedreht, während der abtriebsseitige Hebelarm 6.1 90° erreicht hat und in Fig. 2D haben beide Hebelarme 5.1 und 6.1 einen Drehwinkel von 180° beschrieben. Entsprechend den Drehwinkeln der Hebelarme 5.1 und 6.1 ändern sich auch die Drehwinkel der Antriebswelle 5 bzw. der Abtriebswelle 6.From Fig. 2B it can be seen that when the drive lever arm rotates 5.1 by 90 ° the lever arm 6.1 on the output side by a much smaller amount Has rotated the angle of rotation. 2C, the drive-side lever arm 5.1 rotated by more than 90 °, while the lever arm 6.1 on the output side 90 ° has reached and in Fig. 2D both lever arms 5.1 and 6.1 have an angle of rotation of 180 °. According to the angles of rotation of the lever arms 5.1 and 6.1 the angles of rotation of the drive shaft 5 and the output shaft 6 also change.

Bei gleichmäßiger Drehung der Antriebswelle 5, die nach einer kurzen Anlaufphase erreicht ist, dreht sich somit die Abtriebswelle 6 zunächst sehr langsam und dann mit stetig zunehmender Geschwindigkeit bis zu einem Maximum bei 180°, wonach die Rotationsgeschwindigkeit der Abtriebswelle 6 bei weiterhin gleichbleibender Rotationsgeschwindigkeit der Antriebswelle 5 stetig abnehmend wieder auf den minimalen Wert bei 360° bzw. 0° verringert. Bei einem erneuten Anzeigewechsel läuft somit der Vorgang erneut ab, wobei stets ein langsamer Anlauf des Anzeigekörpers 4 über eine maximale Rotationsgeschwindigkeit bei halbem Drehwinkel zwischen zwei benachbarten Anzeigeflächen und danach eine Verringerung der Drehgeschwindigkeit auf einen minimalen Wert bei Ende des Anzeigewechsels erreicht ist.With even rotation of the drive shaft 5 after a short start-up phase is reached, the output shaft 6 rotates very slowly first and then with steadily increasing speed up to a maximum at 180 °, after which the rotational speed of the output shaft 6 while still the same Rotational speed of the drive shaft 5 steadily decreasing again minimum value reduced at 360 ° or 0 °. When the display changes again The process therefore runs again, with the display body always starting up slowly 4 over a maximum rotation speed at half rotation angle between two adjacent display areas and then a decrease in Rotation speed to a minimum value at the end of the display change is reached.

Infolge der bis zum Maximum allmählich zunehmenden und danach allmählich abnehmenden Rotationsgeschwindigkeit des bzw. der Anzeigekörper 4 ist die erforderliche Kraft insbesondere in der Anfangsphase und der Endphase gering, so daß auch lediglich eine geringe Antriebsleistung benötigt wird. Umgekehrt vermag eine auf die Anzeigefläche drückende Windkraft den Anzeigekörper praktisch nicht aus der Anzeigestellung herauszudrehen, da hierzu infolge der beschriebenen Getriebegeometrie des zwischen der Antriebswelle 5 und der Abtriebswelle 6 angeordneten Getriebeabschnitts eine sehr große Kraft erforderlich wäre.As a result of the gradually increasing to the maximum and then gradually decreasing rotational speed of the or the display body 4 is the required force is low, especially in the initial phase and the final phase that only a low drive power is required. Conversely, a wind force pressing on the display surface practically does not displace the display body turn out of the display position, because this is due to the described Gear geometry of the between the input shaft 5 and the output shaft 6 arranged transmission section would require a very large force.

In den Figuren 3A bis 3C ist eine ähnliche Darstellung wiedergegeben wie in Fig. 1, wobei die verschiedenen Anzeigeflächen 1 bis 3 auf der Sichtseite angeordnet sind. Aus den Figuren 3A bis 3C geht hervor, daß dies stets dann der Fall ist, wenn der beschriebene Getriebeabschnitt die gleiche Ausgangsposition hat. In den Figuren 3A bis 3C ist der antriebsseitige Hebelarm in teilweise geschnittener Darstellung gezeigt, so daß auch der in der U-förmigen Nut abrollende Zapfen erkennbar ist.FIGS. 3A to 3C show a representation similar to that in FIG. 1, the various display areas 1 to 3 being arranged on the visible side are. FIGS. 3A to 3C show that this is always the case if the described gear section has the same starting position. In the Figures 3A to 3C is the drive lever arm in a partially sectioned Representation shown so that the rolling pin in the U-shaped groove is recognizable.

Bei dem bisher beschriebenen Ausführungsbeispiel sind die Achse des Anzeigekörpers 4 und die Drehachsen der Antriebswelle 5 und der Abtriebswelle 6 in gleicher Richtung angeordnet. In Fig. 4 ist hingegen die Achse des Anzeigekörpers 4 bezüglich der Abtriebswelle 6 und der Antriebswelle 5 rechtwinklig angeordnet. Die Übertragung der Rotation zwischen Abtriebswelle 6 und dem Anzeigekörper 4 erfolgt hierbei über ein Kegelradgetriebe mit Kegelrädern 6.2' und 7', deren Zahnverhältnis ebenfalls so gewählt ist, daß bei einer vollen Umdrehung der Abtriebswelle 6 der Anzeigekörper 4 gerade soweit gedreht wird, daß die nächste Anzeigefläche auf der Sichtseite erscheint. Im vorliegenden Fall beträgt somit wegen der drei Anzeigeflächen das Zahnverhältnis des Kegelrads 7' zu dem Kegelrad 6.2' drei zu eins.In the embodiment described so far, the axis of the display body 4 and the axes of rotation of the drive shaft 5 and the output shaft 6 in the same Direction arranged. 4, however, is the axis of the display body 4 arranged at right angles with respect to the output shaft 6 and the drive shaft 5. The Transmission of the rotation between the output shaft 6 and the display body 4 takes place here via a bevel gear with bevel gears 6.2 'and 7', the tooth ratio is also chosen so that at a full revolution of the output shaft 6 the display body 4 is rotated just so far that the next display area appears on the visible side. In the present case it is because of of the three display areas, the tooth ratio of the bevel gear 7 'to the bevel gear 6.2' three to one.

Claims (8)

  1. Interchangeable displaying apparatus, having at least one display member, which is rotatable about an axis and has a polygonal or lamellar cross-section, said member having a plurality of display faces, which are rotatable relative to one viewing side, on its outer surface at identical spacings between the rotational angles, having a driving motor and having a transmission device, which is disposed between said motor and the display member and has a driving shaft and a driven shaft, which is coupled to the display member, characterised in that the transmission device (5, 6, 7) has a transmission section (5.1, 6.1, 6.11) between the driving shaft (5) and the driven shaft (6), by means of which transmission section a rotational speed of the driving shaft (5), which is uniform during the display changeover, is convertible into a rotational speed of the driven shaft (6), which speed increases steadily from a minimum initial value to an instantaneous maximum value and subsequently drops steadily to a minimum value at the end of the display changeover.
  2. Interchangeable displaying apparatus according to claim 1, characterised in that the rotary axes of the driving shaft (5) and of the driven shaft (6) are orientated parallel to each other at a first fixed spacing therebetween and each have a lever arm (5.1, 6.1), which extends transversely relative to the rotary axis, at their end regions facing each other, in that the end of one lever arm (6.1) is provided with a coupling member (6.11) at a second fixed spacing (b) from the associated rotary axis, the second spacing (b) being greater than the first spacing (a), in that the coupling member (6.11) is radially guided in a guide path of the other lever arm (5.1) during the rotation of the driving shaft and of the driven shaft (6), so that a spacing (c), which is variable during the rotation, is produced between the coupling member (6.11) and the rotary axis of the other lever arm (5.1), and in that, when the display member (4) is in a displaying position, the two lever arms (5.1, 6.1) are orientated in an angular position, in which the variable spacing (c) is minimal, while it is maximal during rotation of the rotary axes through 180° and returns to the minimum again at 360° during further rotation.
  3. Interchangeable displaying apparatus according to claim 1 or 2, characterised in that the transmission device (5, 6, 7) has, between the driven shaft (6) and the display member (4), a reduction gear component (6.2, 7) which converts one full rotation of the driven shaft (6) into a rotational angle corresponding to the spacing between the rotational angles of two successive display faces (1, 2, 3).
  4. Interchangeable displaying apparatus according to claim 3, characterised in that the reduction gear component has two intermeshing toothed wheels (6.2, 7; 6.2, 7), the tooth radio of which is inversely proportional to the ratio between the rotational angles of the driven shaft (6) and the display member (4).
  5. Interchangeable displaying apparatus according to one of claims 2 to 4, characterised in that the coupling member (6.11) has a journal which is orientated parallel to the rotary axes of the driving shaft (5) and the driven shaft (6), and in that the guide path extends rectilinearly and is formed by a groove or a slot.
  6. Interchangeable displaying apparatus according to one of claims 2 to 5, characterised in that the coupling member (6.11) is supported in the guide path by means of a roller.
  7. Interchangeable displaying apparatus according to one of claims 2 to 6, characterised in that a detector means (8) is provided, whereby the positioning of the particular display face in the displaying position is ascertainable.
  8. Interchangeable displaying apparatus according to one of claims 2 to 7, characterised in that one lever arm (6.1), which is provided with the coupling member (6.11), is mounted on the driven shaft (6), while the other lever arm (5.1), which is provided with the guide path, is mounted on the driving shaft (5), and in that, for the minimum of the variable spacing (c), such spacing is smaller than the fixed spacing (a) between the rotary axes of the driving shaft (5) and of the driven shaft (6).
EP95118203A 1995-02-21 1995-11-20 Display device for variable signs Expired - Lifetime EP0729127B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19505837A DE19505837C1 (en) 1995-02-21 1995-02-21 Exchange indicator
DE19505837 1995-02-21

Publications (2)

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EP0729127A1 EP0729127A1 (en) 1996-08-28
EP0729127B1 true EP0729127B1 (en) 1998-03-25

Family

ID=7754547

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95118203A Expired - Lifetime EP0729127B1 (en) 1995-02-21 1995-11-20 Display device for variable signs

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EP (1) EP0729127B1 (en)
AT (1) ATE164466T1 (en)
DE (2) DE19505837C1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2811461A1 (en) * 2000-07-06 2002-01-11 Paul Ammar Oscillating drive for advertising panel has separate cranks so different elements move differently
CN110005915A (en) * 2019-04-25 2019-07-12 深圳市亮彩科技有限公司 A kind of any combination rotating device
CN112992019A (en) * 2021-03-04 2021-06-18 仲恺农业工程学院 Outdoor sharing display device for multimedia information

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1223940B (en) * 1988-11-25 1990-09-29 Stile Design Srl Centro MECHANICAL TRANSMISSION BETWEEN PARALLEL SHAFTS PARTICULARLY IN DISPLAYS OF ADVERTISING MESSAGES TO ROTATING BODIES PRESENT IN COMBINATION SEQUENTLY DIFFERENT MESSAGES
GB9015257D0 (en) * 1990-07-11 1990-08-29 Southern Metal Fabrications Li Display apparatus
EP0499324A1 (en) * 1991-02-12 1992-08-19 ONDAVISION di COMASCHI Laura & C. S.n.c. Advertising board with rotating elements
SE9100587L (en) * 1991-03-01 1992-03-02 Prisma Skyltreklam Ab DRIVING DEVICE FOR DRIVING SIGNALS ON IMAGE SWITCHING SIGNS
US5255465A (en) * 1992-06-05 1993-10-26 Hector Perez Multiple display sign assembly
DE4227676A1 (en) * 1992-08-21 1994-02-24 Werbetechnik Gmbh Picture wall for advertising - is composed of several pref. commonly driven picture screens arranged in support frame

Also Published As

Publication number Publication date
ATE164466T1 (en) 1998-04-15
DE59501705D1 (en) 1998-04-30
EP0729127A1 (en) 1996-08-28
DE19505837C1 (en) 1996-10-24

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