EP0360684A1 - Manual controlling mean using a rotary button - Google Patents

Manual controlling mean using a rotary button Download PDF

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Publication number
EP0360684A1
EP0360684A1 EP89402560A EP89402560A EP0360684A1 EP 0360684 A1 EP0360684 A1 EP 0360684A1 EP 89402560 A EP89402560 A EP 89402560A EP 89402560 A EP89402560 A EP 89402560A EP 0360684 A1 EP0360684 A1 EP 0360684A1
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EP
European Patent Office
Prior art keywords
rotation
wheel
axis
button
contact
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.)
Withdrawn
Application number
EP89402560A
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German (de)
French (fr)
Inventor
Francis Orillard
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.)
Thales SA
Original Assignee
Thomson CSF SA
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Filing date
Publication date
Application filed by Thomson CSF SA filed Critical Thomson CSF SA
Publication of EP0360684A1 publication Critical patent/EP0360684A1/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/005—Electromechanical pulse generators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/005—Electromechanical pulse generators
    • H01H2019/006—Electromechanical pulse generators being rotation direction sensitive, e.g. the generated pulse or code depends on the direction of rotation of the operating part
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20576—Elements
    • Y10T74/20732—Handles
    • Y10T74/20834—Hand wheels
    • Y10T74/2084—Knob or dial

Definitions

  • the present invention relates to a manual control device by driving a rotating button.
  • a manual control button generally has a mechanical axis which is driven at one end by the rotation of the button and the other end of which drives a part so as to produce the desired command.
  • the control button is located next to the panel on which it is mounted, the mechanical axis passes through the panel and the part driven by the axis is located on the other side of the panel relative to the button. .
  • the part driven is the potentiometer cursor and the rotation of the button results in an electric signal of variable level taken between the cursor and an end itself connected to a reference potential .
  • the invention applies to such cases and an example of a corresponding application is described below concerning, more particularly, a display device on a flat screen, this device being able to constitute on-board equipment on aircraft.
  • a display device on a flat screen this device being able to constitute on-board equipment on aircraft.
  • the use, for such a device, of a housing which closely follows the shape of the screen does not spare much space for the passage of a conventional control member with a mechanical axis, hence the need for another solution.
  • the object of the invention is to solve such problems by reducing the volume of the control device substantially to the one occupied simply by the control button on the front of the panel.
  • the invention provides a manual control device by driving a rotating button, mounted in a support and comprising the button, an axis integral with the button and controlled in rotation by the button, a given assembly, formed of a wheel with fixed ratchet, coaxial to the axis, with internal teeth, of an electrical contact mounted on the axis and provided with at least one conductive blade forming a pawl for the ratchet wheel and coming to lock in the toothing of the wheel to ratchet for a given direction of rotation of the axis and sliding on the teeth for the direction of rotation of the reverse axis of the given direction, and electrical accesses associated respectively with the axis and with the wheel, and in which the mechanical connection which goes from the wheel to the axle via the support is electrically insulating, characterized in that the contact is mounted so as to slide on the axle when it is blocked by the ratchet wheel and in that the device comprises a reverse assembly formed by a ratchet wheel and a contact, mounted around the axis, next to the
  • Figure 1 shows a button, 1, which is controlled in manual rotation by the operator around the axis of rotation Z.
  • the button 1 has the shape of a cylindrical tube element closed at its upper end.
  • a mechanical axis of rotation 2 is secured to the solid upper part of the button by one of its ends.
  • the remaining part of the manual control device consists of a mechanical device driven by axis 2 and elements of electrical connection to the outside.
  • the mechanical device is essentially arranged inside the cylindrical cavity of the button. It comprises a housing 3 provided with a base at its lower part to ensure that it is held on an annex support panel 33. Inside the housing 3 which has a recessed part to allow the mechanical axis 2 to pass through at the upper part, there is a mounting consisting of two contact blades 4 and 5 and two ratchet wheels 8 and 7 respectively associated with the blades 4,5.
  • Each of the assemblies 4-8 and 5-7 is shown in detail in axial section, in the following figures 2 and 3 respectively.
  • Each wheel has an internal toothing on which one end of the associated blade moves for a direction of rotation.
  • the end of the associated blade will be engaged in the toothing and blocked by the corresponding tooth; this blade thus constitutes a pawl.
  • the mounting of the ratchet wheels and the blades is reversed between FIGS. 2 and 3 so that for a direction of rotation of the axis 2, for example direction F, the blade 4 slides successively in the internal circular toothing carried by the wheel 8.
  • the blade 5 is blocked by the internal toothing of the wheel 7.
  • the wheels 8 and 7 are fixed, made integral with the housing 3 by spacers 9 of cylindrical shape ensuring the wheels in their peripheral part on the housing side.
  • the blades have a spiral shape composed of a single turn with a cylindrical axial part forming one end and winding around the axis of rotation and a rectilinear terminal part which comes to rest on the teeth.
  • the cylindrical part of the blades 4 and 5 does not bear directly on the mechanical axis 2 but by means of a first cylindrical part 10 on which they are frictionally mounted; this part 10 ensures their mechanical strength along the axis Z.
  • the axis 2 and the part 10 are metallic and an insulating sleeve 11 is interposed between these two parts which are integral with the axis of rotation 2 and driven in rotation with this axis in one direction or the other by the control of the button 1.
  • the blades 4 and 5 being mounted in fraction, for a given direction of rotation one of the blades 4 is driven by the part 10 while the other blade, which is blocked, allows the rotation of the part 10 with negligible friction, and vice versa for the other direction of rotation.
  • the device comprises electrical connections respectively connecting the two blades 4 and 5, via the collector 10 and an elastic blade 14, to a common terminal 15 and the two ratchet wheels 7 and 8 which are made of conductive material to two other terminals 16 and 17.
  • the terminals or studs 15, 16 and 17 are located at the bottom of the button and appear in a hollowed-out part of the panel 33 on which the button is mounted.
  • the electrical connection terminals are made integral with the housing by means of a base 36 on which the other end of the mechanical axis 2 terminates.
  • the button 1 drives the mechanical axis 2, which drives for one direction of rotation the blade 4 along the teeth of the wheel 8 and for the other direction of rotation the blade 5 along the teeth of the wheel 7; it follows that if the common point 15 is connected to a DC voltage, the signal supplied by the outputs 16 and 17 is constituted by a chopped signal for one and continuous for the other, and vice versa by changing the direction of rotation.
  • the chopping comes from that of the two blades 4, 5 which slides over the teeth and momentarily interrupts its electrical contact with the wheel with which it is associated during the passage from one tooth to the next.
  • This distinction of signals is used to discriminate the direction of rotation which has been manually imposed on axis 2 by command of button 1 and to produce the desired variation.
  • connection between the contact blades and the terminal 15 is effected by means of an elastic blade 14 at the bottom of the manifold.
  • the blade 14 rubs on the bottom of the collector 10 and allows the electrical connection between the collector 10 and the common contact 15.
  • the control device makes it possible to house a rotary pulse generator device, with discrimination of the direction of rotation, in the volume usually allocated to a simple control button.
  • FIG. 4 represents the circuit electrically connected to terminals 15 to 17.
  • the assembly formed by the two ratchet wheels 7, 8 the blades 5, 4 and the device for driving the two blades, is symbolized by a cam 21 and two switches 22 and 23.
  • the switch 22 is actuated at each passage of a toothing while the switch 23 remains in the indicated position connecting it to a common wire, that is to say say at a DC voltage V cc applied to terminal 15.
  • the output signals taken at 16 and 17 are transmitted to a shaping circuit 24 before being applied to an up-down counter circuit 25.
  • the output of the counter- down-counter is sent to the operating circuits.
  • the action of the button is intended to act on a display on a liquid crystal flat screen 26.
  • the system is managed by a programmed processor 27 connected to the counter 25 and to the display 26 by the via a bus to adjust the display brightness.
  • the processor 27 identifies a corrective action to be carried out in one direction or the other on the display device 26.
  • the processor 27 controls a corresponding amplitude or level variation of the parameter to be modified.
  • FIG. 5 shows the mounting of the rotation control device according to FIG. 1 outside the front face of the display as well as the lack of space between the useful internal profile of the housing 30 and the external profile of the crystal panel liquids 31 protected by a glass 35.
  • This lack of space makes it impossible to install a conventional mechanical connection between an external control button 1 and a controlled member disposed inside.
  • the small space available, however, allows the passage of electrical connections 18.
  • the housing 30 is internally machined to allow the mounting of the liquid crystal 31. Its front face is hollowed out to receive a printed circuit 32 equipped with three contact blades, one of which, 19, is shown. The blades are connected by the wires 18 corresponding to the downstream operating circuit and ensure, through a front frame 33 on which the button is placed, the connection with the contact pads 15, 16 and 17 of the pulse transmitter button .
  • the contact 22 (FIG. 4) is opened intermittently while the contact 23 remains continuously closed.
  • the pulses produced are shaped then, by the link 28, are applied to the up-down counter register 25.
  • the pulses produced are transmitted by the link 29 to the up-down counter circuit 25.
  • the processor 27 resets or resets the counter before each count.

Landscapes

  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Switches With Compound Operations (AREA)
  • Mechanical Control Devices (AREA)
  • Adjustable Resistors (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

The device is designed to be housed in the space of a control button. It comprises two ratchet wheels (7,8) mounted coaxially so as to present oppositely directed internal circular teeth; a contact strip (4,5) is associated with each wheel. The contact strips are driven by the rotation of the button (1) via a mechanical axle (2,10,11) around which they are friction mounted. For one direction of rotation of the axle one of the strips slides over the teeth of the wheel with which it is associated, creating intermittent interruptions of the electrical strip-wheel connection on passing from one tooth to the next, whereas the other strip, which is blocked by the toothing of the associated wheel and slides over the axle, remains in continuous electrical contact with the ratchet wheel with which it is associated. If the direction of rotation is reversed, the role of the strips is reversed. <??>Application to the creation of pulses by intermittent interruption of a d.c. voltage with the aid of strips and to the distinguishing of the direction of rotation of the axle. <IMAGE>

Description

La présente invention concerne un dispositif de commande manuelle par entraînement d'un bouton en rotation.The present invention relates to a manual control device by driving a rotating button.

Certains équipements, notamment dans les domaines militai­res et avioniques, doivent présenter une forte compacité et un faible poids et la conception qui s'en suit est telle, que l'im­plantation de bouton de commande rotatif, généralement sur une face avant, présente des difficultés, voire une impossibilité.Certain equipment, in particular in the military and avionics fields, must have a high compactness and a low weight and the design which follows is such, that the installation of rotary control button, generally on a front face, presents difficulties. , or even an impossibility.

En effet, un bouton de commande manuelle comporte généra­lement un axe mécanique qui est entraîné à une extrémité par la rotation du bouton et dont l'autre extrémité entraîne une pièce de manière à produire la commande désirée. Dans ce genre com­mun de réalisation le bouton de commande se trouve à côté du panneau sur lequel il est monté, l'axe mécanique traverse le panneau et la pièce entraînée par l'axe se trouve de l'autre côté du panneau par rapport au bouton.Indeed, a manual control button generally has a mechanical axis which is driven at one end by the rotation of the button and the other end of which drives a part so as to produce the desired command. In this common type of embodiment, the control button is located next to the panel on which it is mounted, the mechanical axis passes through the panel and the part driven by the axis is located on the other side of the panel relative to the button. .

Dans le cas bien connu d'un potentiomètre par exemple, la pièce entraînée est le curseur du potentiomètre et la rotation du bouton se traduit par un signal électrique de niveau variable prélevé entre le curseur et une extrémité elle-même connectée à un potentiel de référence.In the well-known case of a potentiometer for example, the part driven is the potentiometer cursor and the rotation of the button results in an electric signal of variable level taken between the cursor and an end itself connected to a reference potential .

L'invention s'applique à de tels cas et un exemple d'appli­cation correspondant est décrit dans la suite concernant, plus particulièrement, un appareil de visualisation sur un écran plat, cet appareil pouvant constituer un matériel embarqué sur aéronef. L'utilisation, pour un tel appareil, d'un boîtier qui épouse étroitement la forme de l'écran ne ménage pas beaucoup de place pour le passage d'un organe de commande conventionnel à axe mécanique d'où la nécessité d'une autre solution.The invention applies to such cases and an example of a corresponding application is described below concerning, more particularly, a display device on a flat screen, this device being able to constitute on-board equipment on aircraft. The use, for such a device, of a housing which closely follows the shape of the screen does not spare much space for the passage of a conventional control member with a mechanical axis, hence the need for another solution.

Le but de l'invention est de résoudre de tels problèmes en ramenant le volume du dispositif de commande sensiblement à celui occupé simplement par le bouton de commande à l'avant du panneau.The object of the invention is to solve such problems by reducing the volume of the control device substantially to the one occupied simply by the control button on the front of the panel.

L'invention propose un dispositif de commande manuelle par entraînement d'un bouton en rotation, monté dans un support et comportant le bouton, un axe solidaire du bouton et commandé en rotation par le bouton, un ensemble donné, formé d'une roue à rochet fixe, coaxiale à l'axe, à denture intérieure, d'un contact électrique monté sur l'axe et muni d'au moins une lame conductrice formant cliquet pour la roue à rochet et venant se bloquer dans la denture de la roue à rochet pour un sens donné de rotation de l'axe et glissant sur la denture pour le sens de rotation de l'axe inverse du sens donné, et d'accès électriques associés respectivement à l'axe et à la roue, et dans lequel la liaison mécanique qui va de la roue à l'axe en passant par le support est électriquement isolante, caractérisé en ce que le contact est monté de manière à glisser sur l'axe lorsqu'il est bloqué par la roue à rochet et en ce que le dispositif comporte un ensemble inverse formé d'une roue à rochet et d'un contact, monté autour de l'axe, à côté de l'ensemble donné, de façon inversée par rapport à l'ensemble donné, c'est-à-dire de façon que la lame formant cliquet de cet ensemble inverse vienne se bloquer pour le sens de rotation de l'axe inverse du sens donné et glisse sur la denture pour le sens donné de rotation.The invention provides a manual control device by driving a rotating button, mounted in a support and comprising the button, an axis integral with the button and controlled in rotation by the button, a given assembly, formed of a wheel with fixed ratchet, coaxial to the axis, with internal teeth, of an electrical contact mounted on the axis and provided with at least one conductive blade forming a pawl for the ratchet wheel and coming to lock in the toothing of the wheel to ratchet for a given direction of rotation of the axis and sliding on the teeth for the direction of rotation of the reverse axis of the given direction, and electrical accesses associated respectively with the axis and with the wheel, and in which the mechanical connection which goes from the wheel to the axle via the support is electrically insulating, characterized in that the contact is mounted so as to slide on the axle when it is blocked by the ratchet wheel and in that the device comprises a reverse assembly formed by a ratchet wheel and a contact, mounted around the axis, next to the given assembly, inversely with respect to the given assembly, that is to say so that the ratchet blade of this reverse assembly comes to lock for the direction of rotation of the reverse axis of the given direction and slides over the teeth for the given direction of rotation.

Les particularités et avantages de l'invention apparaî­tront dans la description qui suit donnée à titre d'exemple à l'aide des figures annexées qui représentent :

  • - Figure 1, un exemple de réalisation d'un dispositif de commande manuelle par entraînement d'un bouton en rotation conforme à l'invention, en coupe médiane par l'axe de rotation ;
  • - Figures 2 et 3, des schémas de détails relatifs au sys­tème commutateur constitué par les deux lames et les dentures associées ;
  • - Figure 4, un diagramme des circuits d'exploitation des signaux produits par la rotation du bouton pour élaborer un signal de variation correspondant ;
  • - Figures 5 et 6, des schémas relatifs à un exemple d'uti­lisation de l'invention sur un appareil de visualisation à écran à cristaux liquides.
The features and advantages of the invention will appear in the description which follows, given by way of example with the aid of the appended figures which represent:
  • - Figure 1, an embodiment of a manual control device by driving a rotary button according to the invention, in median section through the axis of rotation;
  • - Figures 2 and 3, detailed diagrams relating to the switch system constituted by the two blades and the associated teeth;
  • - Figure 4, a diagram of the operating circuits of the signals produced by the rotation of the button to develop a corresponding variation signal;
  • - Figures 5 and 6, diagrams relating to an example of use of the invention on a display device with liquid crystal screen.

La figure 1 montre un bouton,1, qui est commandé en rotation manuelle par l'opérateur autour de l'axe de rotation Z. Le bouton 1 a la forme d'un élément de tube cylindrique fermé à son extrémité supérieure. Un axe mécanique de rotation 2 est solidaire de la partie supérieure pleine du bouton par l'une de ses extrémités.Figure 1 shows a button, 1, which is controlled in manual rotation by the operator around the axis of rotation Z. The button 1 has the shape of a cylindrical tube element closed at its upper end. A mechanical axis of rotation 2 is secured to the solid upper part of the button by one of its ends.

La partie restante du dispositif de commande manuelle est constituée d'un dispositif mécanique entraîné par l'axe 2 et d'éléments de connexion électrique vers l'extérieur.The remaining part of the manual control device consists of a mechanical device driven by axis 2 and elements of electrical connection to the outside.

Le dispositif mécanique est pour l'essentiel disposé à l'intérieur de la cavité cylindrique du bouton. Il comporte un boîtier 3 muni d'une embase à sa partie inférieure pour assurer sa tenue sur un panneau support annexe 33. A l'intérieur du boîtier 3 qui comporte une partie évidée pour laisser passer l'axe mécanique 2 à la partie supérieure, se trouve un montage constitué de deux lames de contact 4 et 5 et de deux roues à rochet 8 et 7 respectivement associées aux lames 4,5..The mechanical device is essentially arranged inside the cylindrical cavity of the button. It comprises a housing 3 provided with a base at its lower part to ensure that it is held on an annex support panel 33. Inside the housing 3 which has a recessed part to allow the mechanical axis 2 to pass through at the upper part, there is a mounting consisting of two contact blades 4 and 5 and two ratchet wheels 8 and 7 respectively associated with the blades 4,5.

Chacun des ensembles 4-8 et 5-7 est représenté de manière détaillée en coupe axiale, sur les figures suivantes 2 et 3 respectivement. Chaque roue comporte une denture interne sur laquelle se déplace une extrémité de la lame associée pour un sens de rotation. Pour l'autre sens de rotation l'extrémité de la lame associée va se trouver engagée dans la denture et blo­quée par la dent correspondante ; cette lame constitue ainsi un cliquet. Le montage des roues à rochet et des lames est inversé entre les figures 2 et 3 en sorte que pour un sens de rotation de l'axe 2, par exemple le sens F, la lame 4 glisse successivement dans la denture circulaire interne portée par la roue 8. Au contraire dans le cas de l'autre montage, la lame 5 se trouve bloquée par la denture interne de la roue 7. Les roues 8 et 7 sont fixes, rendues solidaires du boîtier 3 par des entretoises 9 de forme cylindrique assurant la tenue des roues dans leur partie périphérique du côté boîtier. Les lames ont une forme spiralée composée d'une seule spire avec une partie axiale cylindrique formant une extrémité et s'enroulant autour de l'axe de rotation et une partie terminale rectiligne qui vient s'appuyer sur la denture. La partie cylindrique des lames 4 et 5 ne porte pas directement sur l'axe mécanique 2 mais par l'intermédiaire d'une première pièce cylindrique 10 sur laquelle elles sont montées à friction ; cette pièce 10 assure leur tenue mécanique le long de l'axe Z. L'axe 2 et la pièce 10 sont métalliques et un manchon isolant 11 est interposé entre ces deux pièces qui sont solidaires de l'axe de rotation 2 et entraînées en rotation avec cet axe dans un sens ou dans l'autre par la commande du bouton 1. Les lames 4 et 5 étant montées à frîction, pour un sens de rotation donné une des lames 4 se trouve entraînée par la pièce 10 tandis que l'autre lame, qui se trouve bloquée, autorise la rotation de la pièce 10 avec un frottement négligeable, et inversement pour l'autre sens de rotation.Each of the assemblies 4-8 and 5-7 is shown in detail in axial section, in the following figures 2 and 3 respectively. Each wheel has an internal toothing on which one end of the associated blade moves for a direction of rotation. For the other direction of rotation, the end of the associated blade will be engaged in the toothing and blocked by the corresponding tooth; this blade thus constitutes a pawl. The mounting of the ratchet wheels and the blades is reversed between FIGS. 2 and 3 so that for a direction of rotation of the axis 2, for example direction F, the blade 4 slides successively in the internal circular toothing carried by the wheel 8. On the contrary in the case of the other assembly, the blade 5 is blocked by the internal toothing of the wheel 7. The wheels 8 and 7 are fixed, made integral with the housing 3 by spacers 9 of cylindrical shape ensuring the wheels in their peripheral part on the housing side. The blades have a spiral shape composed of a single turn with a cylindrical axial part forming one end and winding around the axis of rotation and a rectilinear terminal part which comes to rest on the teeth. The cylindrical part of the blades 4 and 5 does not bear directly on the mechanical axis 2 but by means of a first cylindrical part 10 on which they are frictionally mounted; this part 10 ensures their mechanical strength along the axis Z. The axis 2 and the part 10 are metallic and an insulating sleeve 11 is interposed between these two parts which are integral with the axis of rotation 2 and driven in rotation with this axis in one direction or the other by the control of the button 1. The blades 4 and 5 being mounted in fraction, for a given direction of rotation one of the blades 4 is driven by the part 10 while the other blade, which is blocked, allows the rotation of the part 10 with negligible friction, and vice versa for the other direction of rotation.

Le dispositif comporte des connexions électriques reliant respectivement les deux lames 4 et 5, par l'intermédiaire du collecteur 10 et d'une lame élastique 14, à une borne commune 15 et les deux roues à rochet 7 et 8 qui sont en matériau conducteur à deux autres bornes 16 et 17. Les bornes ou plots 15, 16 et 17 sont situés à la partie inférieure du bouton et apparaissent dans une partie évidée du panneau 33 sur lequel le bouton est monté. Les bornes de connexion électrique sont rendues solidaires du boîtier par l'intermédiaire d'une embase 36 sur laquelle aboutit l'autre extrémité de l'axe mécanique 2.The device comprises electrical connections respectively connecting the two blades 4 and 5, via the collector 10 and an elastic blade 14, to a common terminal 15 and the two ratchet wheels 7 and 8 which are made of conductive material to two other terminals 16 and 17. The terminals or studs 15, 16 and 17 are located at the bottom of the button and appear in a hollowed-out part of the panel 33 on which the button is mounted. The electrical connection terminals are made integral with the housing by means of a base 36 on which the other end of the mechanical axis 2 terminates.

Le bouton 1 entraîne l'axe mécanique 2, lequel entraîne pour un sens de rotation la lame 4 le long de la denture de la roue 8 et pour l'autre sens de rotation la lame 5 le long de la denture de la roue 7 ; il s'ensuit que si le point commun 15 est connecté à une tension continue, le signal fourni par les sorties 16 et 17 est constitué par un signal haché pour l'un et continu pour l'autre, et inversement en changeant le sens de rotation. Le hachage provient de celle des deux lames 4, 5 qui glisse sur la denture et interrompt momentanément son contact électrique avec la roue à laquelle elle est associée lors du passage d'une dent à la suivante. Cette distinction des signaux est mise à profit pour discriminer le sens de rotation qui a été imposé manuellement à l'axe 2 par commande du bouton 1 et pour produire la variation désirée. Celle-ci résulte directement de l'amplitude angulaire de la rotation et donc du nombre de transitions électriques relevées sur le signal correspondant. Dans l'exemple représenté, la connexion entre les lames de contact et la borne 15 s'effectue par l'intermédiaire d'une lame élastique 14 à la partie inférieure du collecteur. La lame 14 frotte sur le bas du collecteur 10 et permet la liaison électrique entre le collecteur 10 et le contact commun 15.The button 1 drives the mechanical axis 2, which drives for one direction of rotation the blade 4 along the teeth of the wheel 8 and for the other direction of rotation the blade 5 along the teeth of the wheel 7; it follows that if the common point 15 is connected to a DC voltage, the signal supplied by the outputs 16 and 17 is constituted by a chopped signal for one and continuous for the other, and vice versa by changing the direction of rotation. The chopping comes from that of the two blades 4, 5 which slides over the teeth and momentarily interrupts its electrical contact with the wheel with which it is associated during the passage from one tooth to the next. This distinction of signals is used to discriminate the direction of rotation which has been manually imposed on axis 2 by command of button 1 and to produce the desired variation. This results directly from the angular amplitude of the rotation and therefore from the number of electrical transitions noted on the corresponding signal. In the example shown, the connection between the contact blades and the terminal 15 is effected by means of an elastic blade 14 at the bottom of the manifold. The blade 14 rubs on the bottom of the collector 10 and allows the electrical connection between the collector 10 and the common contact 15.

Le dispositif de commande permet de loger un dispositif rotatif générateur d'impulsions, avec discrimination du sens de rotation, dans le volume habituellement alloué à un simple bouton de commande.The control device makes it possible to house a rotary pulse generator device, with discrimination of the direction of rotation, in the volume usually allocated to a simple control button.

La figure 4 représente le circuit relié électriquement aux bornes 15 à 17. L'ensemble formé par les deux roues à rochet 7, 8 les lames 5, 4 et le dispositif d'entraînement des deux lames, est symbolisé par une came 21 et deux interrupteurs 22 et 23. Pour le sens de rotation F il est considéré que l'interrupteur 22 est actionné à chaque passage d'une denture tandis que le commutateur 23 reste sur la position indiquée le reliant à un fil commun c'est-à-dire à une tension continue Vcc appliquée à la borne 15. Les signaux de sortie prélevés en 16 et 17 sont transmis à un circuit de mise en forme 24 avant d'être appliqués à un circuit compteur-décompteur 25. La sortie du compteur-décompteur est envoyée aux circuits d'exploitation. Dans le cas d'application envisagé, l'action du bouton est destinée à agir sur une visualisation sur écran plat à cristaux liquides 26. Le système est géré par un processeur programmé 27 relié au compteur 25 et à l'afficheur 26 par l'intermédiaire d'un bus pour régler la luminosité de l'affichage. Selon la voie fournissant les impulsions, le processeur 27 identifie une action correctrice à effectuer dans un sens ou dans l'autre sur le dispositif de visualisation 26. Selon l'amplitude de la rotation angulaire du bouton et donc du comptage d'impulsions, le processeur 27 commande une variation d'amplitude ou de niveau correspondante du paramètre à modifier.FIG. 4 represents the circuit electrically connected to terminals 15 to 17. The assembly formed by the two ratchet wheels 7, 8 the blades 5, 4 and the device for driving the two blades, is symbolized by a cam 21 and two switches 22 and 23. For the direction of rotation F it is considered that the switch 22 is actuated at each passage of a toothing while the switch 23 remains in the indicated position connecting it to a common wire, that is to say say at a DC voltage V cc applied to terminal 15. The output signals taken at 16 and 17 are transmitted to a shaping circuit 24 before being applied to an up-down counter circuit 25. The output of the counter- down-counter is sent to the operating circuits. In the application case envisaged, the action of the button is intended to act on a display on a liquid crystal flat screen 26. The system is managed by a programmed processor 27 connected to the counter 25 and to the display 26 by the via a bus to adjust the display brightness. According to the way providing the pulses, the processor 27 identifies a corrective action to be carried out in one direction or the other on the display device 26. Depending on the amplitude of the angular rotation of the button and therefore of the pulse count, the processor 27 controls a corresponding amplitude or level variation of the parameter to be modified.

Les figures 5 et 6 se rapportent à ce type d'application et sont des schémas de détail de réalisation. La figure 5 montre le montage du dispositif de commande de rotation selon la figure 1 à l'extérieur de la face avant de l'afficheur ainsi que le manque de place entre le profil intérieur utile du boîtier 30 et le profil extérieur du panneau à cristaux liquides 31 protégé par une glace 35. Ce manque de place rend impossible l'implantation d'une liaison mécanique conventionnelle entre un bouton de commande extérieur 1 et un organe commandé disposé à l'intérieur. Le faible espace disponible permet cependant le passage de liaisons électriques 18.Figures 5 and 6 relate to this type of application and are detailed implementation diagrams. FIG. 5 shows the mounting of the rotation control device according to FIG. 1 outside the front face of the display as well as the lack of space between the useful internal profile of the housing 30 and the external profile of the crystal panel liquids 31 protected by a glass 35. This lack of space makes it impossible to install a conventional mechanical connection between an external control button 1 and a controlled member disposed inside. The small space available, however, allows the passage of electrical connections 18.

Le boîtier 30 est usiné intérieurement pour permettre le montage du cristal liquide 31. Sa face avant est creusée pour recevoir un circuit imprimé 32 équipé de trois lames de contact dont une, 19, est représentée. Les lames sont reliées par les fils 18 correspondants au circuit d'exploitation en aval et assurent, à travers un cadre avant 33 sur lequel est posé le bouton, la connexion avec les plots de contact 15, 16 et 17 du bouton émetteur d'impulsions.The housing 30 is internally machined to allow the mounting of the liquid crystal 31. Its front face is hollowed out to receive a printed circuit 32 equipped with three contact blades, one of which, 19, is shown. The blades are connected by the wires 18 corresponding to the downstream operating circuit and ensure, through a front frame 33 on which the button is placed, the connection with the contact pads 15, 16 and 17 of the pulse transmitter button .

Pour une rotation de sens horaire F du bouton 1, le con­tact 22 (figure 4) est ouvert de façon intermittente alors que le contact 23 reste continuellement fermé. Les impulsions produi­tes sont mises en forme puis, par la liaison 28, sont appliquées au registre compteur-décompteur 25. Pour l'autre sens de rota­tion, les impulsions produites sont transmises par la liaison 29 au circuit compteur-décompteur 25. Le processeur 27 effectue la remise à zéro ou réinitialisation du compteur avant chaque comp­tage.For a clockwise rotation F of the button 1, the contact 22 (FIG. 4) is opened intermittently while the contact 23 remains continuously closed. The pulses produced are shaped then, by the link 28, are applied to the up-down counter register 25. For the other direction of rotation, the pulses produced are transmitted by the link 29 to the up-down counter circuit 25. The processor 27 resets or resets the counter before each count.

Claims (2)

1. Dispositif de commande manuelle par entraînement d'un bouton en rotation, monté dans un support et comportant le bouton, un axe solidaire du bouton et commandé en rotation par le bouton, un ensemble donné, formé d'une roue à rochet fixe, coaxiale à l'axe, à denture intérieure, d'un contact électrique monté sur l'axe et muni d'au moins une lame conductrice formant cliquet pour la roue à rochet et venant se bloquer dans la denture de la roue à rochet pour un sens donné de rotation de l'axe et glissant sur la denture pour le sens de rotation de l'axe inverse du sens donné, et d'accès électriques associés respectivement à l'axe et à la roue, et dans lequel la liaison mécanique qui va de la roue à l'axe en passant par le support est électriquement isolante, caractérisé en ce que le contact est monté de manière à glisser sur l'axe (2, 10, 11) lorsqu'il est bloqué par la roue à rochet (8) et en ce que le dispositif comporte un ensemble inverse formé d'une roue à rochet (7) et d'un contact (5), monté autour de l'axe, à côté de l'ensemble donné, de façon inversée par rapport à l'ensemble donné, c'est-à-dire de façon que la lame formant cliquet de cet ensemble inverse vienne se bloquer pour le sens de rotation de l'axe inverse du sens donné et glisse sur la denture pour le sens donné de rotation.1. Manual control device by driving a rotating button, mounted in a support and comprising the button, an axis integral with the button and controlled in rotation by the button, a given assembly, formed by a fixed ratchet wheel, coaxial to the axis, with internal teeth, of an electrical contact mounted on the axis and provided with at least one conductive blade forming a pawl for the ratchet wheel and coming to lock in the toothing of the ratchet wheel for a given direction of rotation of the axis and sliding on the toothing for the direction of rotation of the axis opposite to the given direction, and of electrical accesses associated respectively with the axis and with the wheel, and in which the mechanical connection which goes from the wheel to the axle via the support is electrically insulating, characterized in that the contact is mounted so as to slide on the axle (2, 10, 11) when it is blocked by the ratchet wheel (8) and in that the device comprises a reverse assembly formed by a rou e with ratchet (7) and a contact (5), mounted around the axis, next to the given assembly, inversely with respect to the given assembly, that is to say so the ratchet blade of this reverse assembly comes to lock for the direction of rotation of the reverse axis of the given direction and slides on the teeth for the given direction of rotation. 2. Dispositif de commande manuelle selon la revendication 1, caractérisé en ce que les roues des ensembles sont conductrices, au moins au niveau de leur denture intérieure, si bien que, lors de la rotation du bouton (1), la liaison électrique roue-contact d'un même ensemble n'est interrompue que lorsque la lame du contact considéré passe d'une dent à l'autre de la denture de la roue considérée.2. Manual control device according to claim 1, characterized in that the wheels of the assemblies are conductive, at least at the level of their internal toothing, so that, during the rotation of the button (1), the wheel-electric connection contact of the same assembly is interrupted only when the blade of the contact considered passes from one tooth to another of the teeth of the wheel considered.
EP89402560A 1988-09-23 1989-09-19 Manual controlling mean using a rotary button Withdrawn EP0360684A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8812471A FR2637119A1 (en) 1988-09-23 1988-09-23 MANUAL CONTROL DEVICE BY DRIVING A ROTATING BUTTON
FR8812471 1989-09-22

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EP0360684A1 true EP0360684A1 (en) 1990-03-28

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EP89402560A Withdrawn EP0360684A1 (en) 1988-09-23 1989-09-19 Manual controlling mean using a rotary button

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US (1) US5039830A (en)
EP (1) EP0360684A1 (en)
FR (1) FR2637119A1 (en)
WO (1) WO1992005570A1 (en)

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USD377337S (en) 1992-01-13 1997-01-14 BACO Constructions Electriques - Anct. Baumgarten S.A. Actuator for a pushbutton electrical switch

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US7518070B2 (en) * 2007-02-07 2009-04-14 Lear Corporation Electrical switch
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USD377337S (en) 1992-01-13 1997-01-14 BACO Constructions Electriques - Anct. Baumgarten S.A. Actuator for a pushbutton electrical switch
FR2691595A1 (en) * 1992-05-19 1993-11-26 Sextant Avionique Rotating pulse generating appts. - uses two pairs of photoelectric emitter-detectors separated by perforated rotating disk

Also Published As

Publication number Publication date
US5039830A (en) 1991-08-13
WO1992005570A1 (en) 1992-04-02
FR2637119A1 (en) 1990-03-30

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