EP0559521A1 - Actuator device for a slider control - Google Patents

Actuator device for a slider control Download PDF

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Publication number
EP0559521A1
EP0559521A1 EP93400459A EP93400459A EP0559521A1 EP 0559521 A1 EP0559521 A1 EP 0559521A1 EP 93400459 A EP93400459 A EP 93400459A EP 93400459 A EP93400459 A EP 93400459A EP 0559521 A1 EP0559521 A1 EP 0559521A1
Authority
EP
European Patent Office
Prior art keywords
trigger
housing
slide
lever
axis
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.)
Granted
Application number
EP93400459A
Other languages
German (de)
French (fr)
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EP0559521B1 (en
Inventor
Jacques Colange
Jean Colange
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Moviluty
Original Assignee
Moviluty
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Publication date
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Publication of EP0559521B1 publication Critical patent/EP0559521B1/en
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
    • G05G1/30—Controlling members actuated by foot
    • G05G1/38—Controlling members actuated by foot comprising means to continuously detect pedal position
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
    • G05G1/30—Controlling members actuated by foot
    • G05G1/40—Controlling members actuated by foot adjustable
    • G05G1/405—Controlling members actuated by foot adjustable infinitely adjustable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • H01H21/02—Details
    • H01H21/18—Movable parts; Contacts mounted thereon
    • H01H21/22—Operating parts, e.g. handle
    • H01H21/24—Operating parts, e.g. handle biased to return to normal position upon removal of operating force
    • H01H21/26—Operating parts, e.g. handle biased to return to normal position upon removal of operating force adapted for operation by a part of the human body other than the hand, e.g. by foot

Definitions

  • the present invention relates to the control devices of a slider variator, and more particularly those which are used to vary the operating speed of certain power tools.
  • devices are used to control the operating speed of the tools arranged at the end of the flexible transmission.
  • the user's hands are often occupied elsewhere, these devices are arranged to be controlled by foot using a pedal.
  • a foot control does not ensure high precision and the tool often includes an additional device for adjusting by hand, with better precision, the operating speed of the tools.
  • the fact of having to have two separate devices in order to be able to vary the operating speed of the tools is unfavorable to the simplicity of use of these tools and to the cost of the tools.
  • US Pat. No. 4,299,182 proposes a device comprising a pedal acting on a rheostat and a series of buttons making it possible to selectively switch on discrete resistors in place of the rheostat.
  • these buttons do not allow continuous manual adjustment of the commanded parameter.
  • the circuit included in this device is relatively complex because it is necessary to provide a large number of discrete resistors and switching means in addition to the rheostat conventionally included in pedal control devices.
  • the object of the present invention is therefore to provide a device for controlling a slider variator, which makes it possible to safely provide foot control and hand control functions, which is of a simple and compact structure, and easy to use.
  • the device illustrated in Figures 1 to 7 is used to continuously control the value of a parameter.
  • This parameter can be, by way of nonlimiting example, the value of the speed of rotation of a tool coupled to a motor by means of a flexible transmission and the device is then connected to the motor.
  • FIG. 1 represents, in schematic form, a device for control of a variator 2 with cursor 14.
  • This device comprises a housing 1, a trigger 3 which can move in translation continuously, for example on guide rails or the like, between two positions relative to the housing, one of the two positions constituting a rest position such as that which is represented in this figure 1.
  • the device also comprises means for applying an elastic force to the trigger to tend to bring it back to this rest position, means 45 for coupling the trigger 3 with the cursor 14, a lever 9, means 46 for mounting this lever 9 in rotation relative to the housing around a first axis 17, and means for transforming the movement of rotation of the lever into movement of translation of the trigger 3.
  • the box 1 comprises at least two first 8 and second 15 housings separated by a so-called dividing wall 42, or equivalent, the variator being disposed in the first housing 8 and the trigger projecting, by its face 40, in the second housing 15 passing through a breakthrough or the like 47 produced in this party wall.
  • the second housing 15 has at least one opening 25, the axis of rotation 17 of the lever 9 being located substantially in the plane of this opening so that the lever, or at least part of the lever, constitutes a wall for closing this opening 25, the means 28 for mounting the slide in translation relative to the housing being located substantially on the wall 29 of this second housing which is substantially opposite to the opening 25.
  • the device further comprises means for erasing the lever 9 from the opening 25 to allow access to the interior of the second housing 15.
  • means for erasing the lever 9 can be produced in numerous ways and FIGS. 2 to 7 give a preferred mode.
  • the lever 9 is constituted by a pedal part 16, an actuating element 18 and means for mounting the actuating element in rotation relative to the pedal part 16 around a second axis 41 substantially parallel to the first axis 17.
  • the means for transforming the rotational movement of the lever 9 into translational movement of the trigger 3 are then constituted by the free end 22 of the actuating element 18 mounted in cooperation by sliding with, advantageously, the face 40 of the trigger 3, for example a face perpendicular to the direction of translation of the trigger and able to move in the second housing 15.
  • the device also advantageously comprises means for defining the angular position of the actuating element 18 relative to the pedal part 16 and elastic return means 27 applied between the actuating element 18 and the pedal part 16.
  • the means 10 for controlling the translation of the slider comprise manual operating means for delivering a rotational movement around a third axis 34 and means for transforming this rotational movement into translational movement of the slider 31.
  • the means for transforming the rotational movement in translational movement of the slide 31 comprise at least one cam 36 rotatably mounted around the third axis 34 substantially perpendicular to the direction of movement of the slide and the first axis 17 defined above and one end of the slide arranged to be suitable to slide on the edge 43 of the cam 36 produced so that the distance between each point of its edge and the third axis of rotation 34 varies, from one point to another, according to a continuous increasing function.
  • FIGS. 2 to 7 represent a preferred embodiment of a device according to the invention as schematically represented in FIG. 1.
  • the device produced according to the mode shown in FIGS. 2 to 7 in fact comprises a housing 1 in which the variator 2 is mounted, the trigger 3, the lower part of the housing 1 being closed by a bottom plate 4 which is not shown in FIGS. 6 and 7 to show the interior of the housing 1. Feet 6 of damping material are fixed under the plate 4.
  • the variator 2 may be constituted, for example, by a rheostat whose resistance varies according to the position of the cursor 14 and therefore of the trigger 3, to define the value of the commanded speed.
  • this variator can be electronic with a hybrid circuit comprising a triac controlled by trigger 3.
  • an output connector 7 is electrically connected to the variator 2.
  • the variator 2 is held in place by appropriate ribs 11, 12.
  • the trigger 3 is urged towards the outside of the first housing 8 by return springs 13 indicated in dashes in FIGS. 6 and 7.
  • the lever 9 constitutes a foot control means.
  • the pedal part 16 is articulated on the housing 1 around the first axis 17 advantageously perpendicular to the direction of movement of the trigger 3.
  • the axis 17 is mounted in two openings 19 formed in the housing 1 (FIG. 4) and the actuating element 18 is pivotally mounted about this axis 17, the first and second axes then being combined.
  • a shim 21 is placed between the underside 20 of the pedal part 16 and the actuating element 18 and constitutes the means for defining the angular position of the actuating element 18 relative to the pedal part 16.
  • the actuating element 18 has one end 22 applied in sliding position on the face 40 of the trigger 3, while its opposite end 23 is applied against the shim 21.
  • the pedal part 16 When the pedal part 16 is depressed, the actuating element 18 leverages to actuate the trigger 3 against the return springs 13 and to modify the position of the cursor 14, and therefore, in the chosen example of the use of the device, to vary the speed of the motor actuating the tool.
  • the manual operating means for delivering a rotational movement around the third axis 34 are constituted by a rotary button 32 accessible on the surface 33 of the housing 1 which extends substantially au- above the slide 31 and below the pedal part 16.
  • the button 32 can pivot around the axis 34 which is perpendicular to the surface 33 and the cam 36 is integral with this button, but located under the surface 33 of so that its edge is applied against the end of the slide 31 opposite to that which is in contact with the trigger.
  • the cam 36 is produced so that the distance between each point of its edge and the third axis of rotation 34 varies, from one point to another, according to an increasing (or decreasing) function ) keep on going.
  • the contact surface 30 between the cam 36 and the slider 31 is always substantially perpendicular to the direction of movement of the slider 31 and of the trigger 3.
  • the rotation of the cam 36 causes a translation of the slide 31 which actuates the trigger against the return springs 13.
  • the return springs 13 gradually push back the trigger 3 and the slide 31.
  • the cam 36 and the slide 31 include stops 35 to limit the rotation of the cam 36.
  • the slider 31 is applied against the trigger 3 by its end 37 advantageously comprising two support elements protruding above the surface 33 through a window 39 provided in it.
  • the two support elements 37 are separated by an interval 38 of a width slightly greater than that of the actuating element 18, and located at the right of this actuating element 18 relative to the axis 17.
  • the interval 38 leaves an area of the trigger 3 exposed to receive the free end 22 of the actuating element 18.
  • the articulation of the pedal part 16 on the housing 1 allows the pedal part to be placed in a raised position illustrated in FIG. 2. In this position, the surface 33 and the button 32 become accessible.
  • the device according to the invention can therefore be used either in so-called “foot control” mode, with the pedal part 16 folded in the position illustrated in FIG. 2, or in so-called “hand control” mode, with the pedal part raised in the position illustrated in FIG. 3.
  • the thickness of the shim 21 is adjustable.
  • This shim 21 has a generally cylindrical shape, one face of which is applied against the lower face 20 of the pedal part 16 and the opposite face receives the end 23 of the actuating element 18.
  • This last face of the shim 21 comprises , near its periphery, several radial notches 24 of different depths and width corresponding to that of the end 23 of the actuating element 18.
  • the wedge 21 is pivotally mounted on the underside 20 of the pedal part 16 about an axis 26 perpendicular to this face 20 and offset from the position of the actuating element 18, so that the end 23 of the latter engages in one of the notches 24 of the wedge 21.
  • the elastic return means 27 applied between the actuating element 18 and the part of pedal 16 are constituted by a helical spring arranged around the axis 17 and urging in rotation the actuating element 18 towards the shim 21, so as to maintain the end 23 of the element 18 in the selected notch of the shim 21 whatever the position of the pedal part 16.
  • This is how the action of the helical spring 27 on the actuating element 18 must be greater than the action, on this element, of the springs reminder 13 when the trigger returns to its rest position.
  • the depth of the selected notch 24 defines the value maximum of the travel of the trigger 3, and therefore the maximum value of the variation of the speed of rotation of the tool.

Abstract

The present invention relates to control devices for a variable controller 2 with a slider 14. The device is characterised essentially in that it includes a housing 1, a trigger 3 capable of moving in translation between two positions with respect to the housing, one of the two positions constituting a rest position, means 13 for applying an elastic force on the trigger in order to tend to bring it back towards the rest position, means 45 for coupling the trigger with the slider 14, a lever 9, means 46 for mounting the lever in rotation with respect to the housing around a first spindle 17, means for converting the rotational movement of the lever into translational movement of the trigger, a slide 31, means 28 for mounting the slide in translation with respect to the housing, one extremity 37 of the slide being able to come into contact with the trigger, and means 10 for controlling the translation of the slide 31. <IMAGE>

Description

La présente invention concerne les dispositifs de commande d'un variateur à curseur, et plus particulièrement ceux qui sont utilisés pour faire varier la vitesse de fonctionnement de certains outillages électroportatifs.The present invention relates to the control devices of a slider variator, and more particularly those which are used to vary the operating speed of certain power tools.

Dans l'exemple des machines à transmission flexible, des dispositifs sont utilisés pour commander la vitesse de fonctionnement des outils disposés en bout de la transmission flexible. Les mains de l'utilisateur étant souvent occupées par ailleurs, ces dispositifs sont agencés pour être commandés au pied à l'aide d'une pédale. Cependant, une telle commande au pied n'assure pas une grande précision et l'outillage comporte souvent un dispositif supplémentaire pour régler à la main, avec une meilleure précision, la vitesse de fonctionnement des outils. Le fait de devoir disposer de deux dispositifs distincts pour pouvoir faire varier la vitesse de fonctionnement des outils est défavorable à la simplicité d'utilisation de ces outils et au coût de l'outillage.In the example of machines with flexible transmission, devices are used to control the operating speed of the tools arranged at the end of the flexible transmission. The user's hands are often occupied elsewhere, these devices are arranged to be controlled by foot using a pedal. However, such a foot control does not ensure high precision and the tool often includes an additional device for adjusting by hand, with better precision, the operating speed of the tools. The fact of having to have two separate devices in order to be able to vary the operating speed of the tools is unfavorable to the simplicity of use of these tools and to the cost of the tools.

Pour éliminer cet inconvénient, le Brevet US-A-4 299 182 propose un dispositif comportant une pédale agissant sur un rhéostat et une série de boutons permettant de mettre sélectivement en circuit des résistances discrètes à la place du rhéostat. Cependant, ces boutons ne permettent pas de réaliser un réglage manuel continu du paramètre commandé. En outre, le circuit compris dans ce dispositif est relativement complexe car il est nécessaire de prévoir un grand nombre de résistances discrètes et des moyens de commutation en plus du rhéostat classiquement inclus dans les dispositifs de commande à pédale.To eliminate this drawback, US Pat. No. 4,299,182 proposes a device comprising a pedal acting on a rheostat and a series of buttons making it possible to selectively switch on discrete resistors in place of the rheostat. However, these buttons do not allow continuous manual adjustment of the commanded parameter. In addition, the circuit included in this device is relatively complex because it is necessary to provide a large number of discrete resistors and switching means in addition to the rheostat conventionally included in pedal control devices.

D'après le Brevet US-A-4 284 018, on connaît un système de commande pour machine à coudre dans lequel un dispositif à pédale classique peut être glissé à l'intérieur d'un boîtier comportant des moyens de commande à main qui permettent d'enfoncer de façon réglable la pédale. Ce système permet certes un réglage manuel continu et précis, mais il n'est pas optimal en matière de coût et de simplicité d'utilisation car il nécessite un boîtier supplémentaire distinct du dispositif à pédale.From patent US-A-4 284 018, a control system for a sewing machine is known in which a conventional pedal device can be slid inside a housing comprising hand control means which allow to depress the pedal in an adjustable manner. This system certainly allows a continuous and precise manual adjustment, but it is not optimal in terms of cost and simplicity of use because it requires an additional housing separate from the pedal device.

La présente invention a ainsi pour but de réaliser un dispositif de commande d'un variateur à curseur, qui permette d'assurer en toute sécurité des fonctions de commande à pied et de commande à main, qui soit d'une structure simple et compacte, et d'une d'utilisation aisée .The object of the present invention is therefore to provide a device for controlling a slider variator, which makes it possible to safely provide foot control and hand control functions, which is of a simple and compact structure, and easy to use.

Plus précisément, la présente invention a pour objet un dispositif de commande d'un variateur à curseur, caractérisé par le fait qu'il comporte:

  • un boîtier,
  • une gâchette, ladite gâchette pouvant se déplacer en translation entre deux positions par rapport audit boîtier, l'une des deux dites positions constituant une position de repos,
  • des moyens pour appliquer une force élastique sur ladite gâchette pour tendre à la ramener vers ladite position de repos,
  • des moyens pour coupler ladite gâchette avec ledit curseur,
  • un levier,
  • des moyens pour monter ledit levier en rotation par rapport audit boîtier autour d'un premier axe,
  • des moyens pour transformer le mouvement de rotation dudit levier en mouvement de translation de ladite gâchette,
  • un coulisseau,
  • des moyens pour monter ledit coulisseau en translation par rapport audit boîtier, une extrémité dudit coulisseau étant apte à venir au contact de la gâchette, et
  • des moyens pour commander la translation dudit coulisseau.
More specifically, the subject of the present invention is a device for controlling a slider variator, characterized in that it comprises:
  • a housing,
  • a trigger, said trigger being able to move in translation between two positions relative to said housing, one of the two said positions constituting a rest position,
  • means for applying an elastic force to said trigger in order to tend to bring it back towards said rest position,
  • means for coupling said trigger with said cursor,
  • a lever,
  • means for mounting said lever in rotation relative to said housing about a first axis,
  • means for transforming the rotational movement of said lever into translational movement of said trigger,
  • a slide,
  • means for mounting said slide in translation relative to said housing, one end of said slide being able to come into contact with the trigger, and
  • means for controlling the translation of said slide.

D'autres caractéristiques et avantages de la présente invention apparaîtront au cours de la description suivante donnée en regard des dessins annexés à titre illustratif mais nullement limitatif dans lesquels:

  • La figure 1 représente, sous forme schématique, un dispositif selon l'invention, de commande d'un variateur à curseur,
  • Les figures 2 et 3 sont deux vues en coupe en élévation d'un mode de réalisation d'un dispositif selon l'invention, la coupe étant référencée I-I sur la figure 6,
  • La figure 4 est une vue en perspective d'une partie du dispositif selon les figures 2 et 3,
  • La figure 5 est une vue en perspective des moyens de commande à pied du dispositif selon les figures 2 et 3, et
  • Les figures 6 et 7 sont des vues de dessous du dispositif selon les figures 2 et 3, dans lequel le fond a été retiré.
Other characteristics and advantages of the present invention will appear during the following description given with reference to the drawings annexed by way of illustration but in no way limitative in which:
  • FIG. 1 represents, in schematic form, a device according to the invention, for controlling a slider variator,
  • FIGS. 2 and 3 are two sectional views in elevation of an embodiment of a device according to the invention, the section being referenced II in FIG. 6,
  • FIG. 4 is a perspective view of part of the device according to FIGS. 2 and 3,
  • FIG. 5 is a perspective view of the foot control means of the device according to FIGS. 2 and 3, and
  • Figures 6 and 7 are bottom views of the device according to Figures 2 and 3, in which the bottom has been removed.

Dans un souci de simplification de la description, les mêmes références désignent, sur l'ensemble des figures, les mêmes moyens, quelles que soient les figures sur lesquelles elles apparaissent et quelle que soit la forme de représentation des moyens qu'elles désignent.For the sake of simplification of the description, the same references designate, on all the figures, the same means, whatever the figures on which they appear and whatever the form of representation of the means which they designate.

Le dispositif illustré sur les figures 1 à 7 sert à commander de façon continue la valeur d'un paramètre. Ce paramètre peut être, à titre d'exemple non limitatif, la valeur de la vitesse de rotation d'un outil couplé à un moteur au moyen d'une transmission flexible et le dispositif est alors relié au moteur.The device illustrated in Figures 1 to 7 is used to continuously control the value of a parameter. This parameter can be, by way of nonlimiting example, the value of the speed of rotation of a tool coupled to a motor by means of a flexible transmission and the device is then connected to the motor.

La figure 1 représente, sous forme schématique, un dispositif de commande d'un variateur 2 à curseur 14. Ce dispositif comporte un boîtier 1, une gâchette 3 pouvant se déplacer en translation de façon continue, par exemple sur des rails de guidage ou analogues, entre deux positions par rapport au boîtier, l'une des deux positions constituant une position de repos telle que celle qui est représentée sur cette figure 1.FIG. 1 represents, in schematic form, a device for control of a variator 2 with cursor 14. This device comprises a housing 1, a trigger 3 which can move in translation continuously, for example on guide rails or the like, between two positions relative to the housing, one of the two positions constituting a rest position such as that which is represented in this figure 1.

Le dispositif comporte aussi des moyens pour appliquer une force élastique sur la gâchette pour tendre à la ramener vers cette position de repos, des moyens 45 pour coupler la gâchette 3 avec le curseur 14, un levier 9, des moyens 46 pour monter ce levier 9 en rotation par rapport au boîtier autour d'un premier axe 17, et des moyens pour transformer le mouvement de rotation du levier en mouvement de translation de la gâchette 3.The device also comprises means for applying an elastic force to the trigger to tend to bring it back to this rest position, means 45 for coupling the trigger 3 with the cursor 14, a lever 9, means 46 for mounting this lever 9 in rotation relative to the housing around a first axis 17, and means for transforming the movement of rotation of the lever into movement of translation of the trigger 3.

Il comporte de plus un coulisseau 31, des moyens pour monter le coulisseau 31 en translation par rapport au boîtier, une extrémité 37 du coulisseau étant apte à venir au contact d'une face 40 de la gâchette 3, et des moyens 10 pour commander la translation du coulisseau 31.It further comprises a slide 31, means for mounting the slide 31 in translation relative to the housing, one end 37 of the slide being able to come into contact with a face 40 of the trigger 3, and means 10 for controlling the translation of the slide 31.

Selon un mode de réalisation avantageux, le boîtier 1 comporte au moins deux premier 8 et second 15 logements séparés par une paroi dite mitoyenne 42, ou équivalent, le variateur étant disposé dans le premier logement 8 et la gâchette débordant, par sa face 40, dans le second logement 15 en passant par une percée ou analogue 47 réalisée dans cette paroi mitoyenne.According to an advantageous embodiment, the box 1 comprises at least two first 8 and second 15 housings separated by a so-called dividing wall 42, or equivalent, the variator being disposed in the first housing 8 and the trigger projecting, by its face 40, in the second housing 15 passing through a breakthrough or the like 47 produced in this party wall.

Le second logement 15 comporte au moins une ouverture 25, l'axe de rotation 17 du levier 9 étant situé sensiblement dans le plan de cette ouverture de façon que le levier, ou au moins une partie du levier, constitue une paroi de fermeture de cette ouverture 25, les moyens 28 pour monter le coulisseau en translation par rapport au boîtier étant situés sensiblement sur la paroi 29 de ce second logement qui est sensiblement opposée à l'ouverture 25.The second housing 15 has at least one opening 25, the axis of rotation 17 of the lever 9 being located substantially in the plane of this opening so that the lever, or at least part of the lever, constitutes a wall for closing this opening 25, the means 28 for mounting the slide in translation relative to the housing being located substantially on the wall 29 of this second housing which is substantially opposite to the opening 25.

Le dispositif comporte en outre des moyens pour effacer le levier 9 de l'ouverture 25 pour permettre l'accès à l'intérieur du second logement 15. Ces moyens d'effacement du levier 9 peuvent être réalisés de nombreuses façons et les figures 2 à 7 en donnent un mode préférentiel.The device further comprises means for erasing the lever 9 from the opening 25 to allow access to the interior of the second housing 15. These means for erasing the lever 9 can be produced in numerous ways and FIGS. 2 to 7 give a preferred mode.

Selon un mode réalisation avantageux, le levier 9 est constitué par une partie de pédale 16, un élément d'actionnement 18 et des moyens pour monter l'élément d'actionnement en rotation par rapport à la partie de pédale 16 autour d'un deuxième axe 41 sensiblement parallèle au premier axe 17. Les moyens pour transformer le mouvement de rotation du levier 9 en mouvement de translation de la gâchette 3 sont alors constitués par l'extrémité libre 22 de l'élément d'actionnement 18 montée en coopération par glissement avec, avantageusement, la face 40 de la gâchette 3, par exemple une face perpendiculaire à la direction de translation de la gâchette et apte à se déplacer dans le second logement 15.According to an advantageous embodiment, the lever 9 is constituted by a pedal part 16, an actuating element 18 and means for mounting the actuating element in rotation relative to the pedal part 16 around a second axis 41 substantially parallel to the first axis 17. The means for transforming the rotational movement of the lever 9 into translational movement of the trigger 3 are then constituted by the free end 22 of the actuating element 18 mounted in cooperation by sliding with, advantageously, the face 40 of the trigger 3, for example a face perpendicular to the direction of translation of the trigger and able to move in the second housing 15.

Le dispositif comporte en outre avantageusement des moyens pour définir la position angulaire du l'élément d'actionnement 18 par rapport à la partie de pédale 16 et des moyens de rappel élastiques 27 appliqués entre l'élément d'actionnement 18 et la partie de pédale 16.The device also advantageously comprises means for defining the angular position of the actuating element 18 relative to the pedal part 16 and elastic return means 27 applied between the actuating element 18 and the pedal part 16.

Les moyens 10 pour commander la translation du coulisseau comportent des moyens de manoeuvre manuelle pour délivrer un mouvement de rotation autour d'un troisième axe 34 et des moyens pour transformer ce mouvement de rotation en mouvement de translation du coulisseau 31. Les moyens pour transformer le mouvement de rotation en mouvement de translation du coulisseau 31 comportent au moins une came 36 montée rotative autour du troisième axe 34 sensiblement perpendiculaire à la direction de déplacement du coulisseau et au premier axe 17 défini ci-avant et une extrémité du coulisseau agencée pour être apte à glisser sur la tranche 43 de la came 36 réalisée de façon que la distance entre chaque point de sa tranche et le troisième axe de rotation 34 varie, d'un point à un autre, suivant une fonction croissante continue.The means 10 for controlling the translation of the slider comprise manual operating means for delivering a rotational movement around a third axis 34 and means for transforming this rotational movement into translational movement of the slider 31. The means for transforming the rotational movement in translational movement of the slide 31 comprise at least one cam 36 rotatably mounted around the third axis 34 substantially perpendicular to the direction of movement of the slide and the first axis 17 defined above and one end of the slide arranged to be suitable to slide on the edge 43 of the cam 36 produced so that the distance between each point of its edge and the third axis of rotation 34 varies, from one point to another, according to a continuous increasing function.

Les figures 2 à 7 représentent un mode de réalisation préférentiel d'un dispositif selon l'invention tel que schématiquement représenté sur la figure 1.FIGS. 2 to 7 represent a preferred embodiment of a device according to the invention as schematically represented in FIG. 1.

Le dispositif réalisé selon le mode représenté sur les figures 2 à 7 comprend en effet un boîtier 1 dans lequel est monté le variateur 2, la gâchette 3, la partie inférieure du boîtier 1 étant fermée par une plaque de fond 4 qui n'est pas représentée sur les figures 6 et 7 pour montrer l'intérieur du boîtier 1. Des pieds 6 en matière amortissante sont fixés sous la plaque 4.The device produced according to the mode shown in FIGS. 2 to 7 in fact comprises a housing 1 in which the variator 2 is mounted, the trigger 3, the lower part of the housing 1 being closed by a bottom plate 4 which is not shown in FIGS. 6 and 7 to show the interior of the housing 1. Feet 6 of damping material are fixed under the plate 4.

Le variateur 2 peut-être constitué, par exemple, par un rhéostat dont la résistance varie selon la position du curseur 14 et donc de la gâchette 3, pour définir la valeur de la vitesse commandée. Toute fois, ce variateur peut être électronique à circuit hybride comportant un triac commandé par la gâchette 3.The variator 2 may be constituted, for example, by a rheostat whose resistance varies according to the position of the cursor 14 and therefore of the trigger 3, to define the value of the commanded speed. However, this variator can be electronic with a hybrid circuit comprising a triac controlled by trigger 3.

Pour raccorder le dispositif à la machine à transmission flexible, il est prévu un connecteur de sortie 7 relié électriquement au variateur 2.To connect the device to the flexible transmission machine, an output connector 7 is electrically connected to the variator 2.

Le variateur 2 est maintenu en place par des nervures appropriées 11, 12. La gâchette 3 est sollicitée vers l'extérieur du premier logement 8 par des ressorts de rappel 13 indiqués en tirets sur les figures 6 et 7.The variator 2 is held in place by appropriate ribs 11, 12. The trigger 3 is urged towards the outside of the first housing 8 by return springs 13 indicated in dashes in FIGS. 6 and 7.

Dans une réalisation possible, par la partie de pédale 16 définie ci-avant, le levier 9 constitue un moyen de commande à pied. La partie de pédale 16 est articulée sur le boîtier 1 autour du premier axe 17 avantageusement perpendiculaire à la direction de déplacement de la gâchette 3. L'axe 17 est monté dans deux ouvertures 19 ménagées dans le boîtier 1 (figure 4) et l'élément d'actionnement 18 est monté pivotant autour de cet axe 17, les premier et deuxième axes étant alors confondus. Une cale 21 est placée entre la face inférieure 20 de la partie de pédale 16 et l'élément d'actionnement 18 et constitue les moyens pour définir la position angulaire de l'élément d'actionnement 18 par rapport à la partie de pédale 16. Lorsque la partie de pédale 16 est rabattue dans sa position illustrée sur la figure 2, l'élément d'actionnement 18 a une extrémité 22 appliquée en position de glissement sur la face 40 de la gâchette 3, tandis que son extrémité opposée 23 est appliquée contre la cale 21. Lorsque la partie de pédale 16 est enfoncée, l'élément d'actionnement 18 fait levier pour actionner la gâchette 3 à l'encontre des ressorts de rappel 13 et pour modifier la position du curseur 14, et donc, dans l'exemple choisi de l'utilisation du dispositif, pour faire varier la vitesse du moteur actionnant l'outil.In one possible embodiment, by the pedal part 16 defined above, the lever 9 constitutes a foot control means. The pedal part 16 is articulated on the housing 1 around the first axis 17 advantageously perpendicular to the direction of movement of the trigger 3. The axis 17 is mounted in two openings 19 formed in the housing 1 (FIG. 4) and the actuating element 18 is pivotally mounted about this axis 17, the first and second axes then being combined. A shim 21 is placed between the underside 20 of the pedal part 16 and the actuating element 18 and constitutes the means for defining the angular position of the actuating element 18 relative to the pedal part 16. When the pedal part 16 is folded back into its position illustrated in FIG. 2, the actuating element 18 has one end 22 applied in sliding position on the face 40 of the trigger 3, while its opposite end 23 is applied against the shim 21. When the pedal part 16 is depressed, the actuating element 18 leverages to actuate the trigger 3 against the return springs 13 and to modify the position of the cursor 14, and therefore, in the chosen example of the use of the device, to vary the speed of the motor actuating the tool.

Dans le mode de réalisation selon les figures 2 à 7, les moyens de manoeuvre manuelle pour délivrer un mouvement de rotation autour du troisième axe 34 sont constitués par un bouton rotatif 32 accessible sur la surface 33 du boîtier 1 qui s'étend sensiblement au-dessus du coulisseau 31 et au-dessous de la partie de pédale 16. Le bouton 32 peut pivoter autour de l'axe 34 qui est perpendiculaire à la surface 33 et la came 36 est solidaire de ce bouton, mais située sous la surface 33 de façon que sa tranche soit appliquée contre l'extrémité du coulisseau 31 opposée à celle qui est en contact avec la gâchette.In the embodiment according to Figures 2 to 7, the manual operating means for delivering a rotational movement around the third axis 34 are constituted by a rotary button 32 accessible on the surface 33 of the housing 1 which extends substantially au- above the slide 31 and below the pedal part 16. The button 32 can pivot around the axis 34 which is perpendicular to the surface 33 and the cam 36 is integral with this button, but located under the surface 33 of so that its edge is applied against the end of the slide 31 opposite to that which is in contact with the trigger.

Comme il apparaît sur les figures 6 et 7, la came 36 est réalisée de façon que la distance entre chaque point de sa tranche et le troisième axe de rotation 34 varie, d'un point à un autre, suivant une fonction croissante (ou décroissante) continue.As it appears in FIGS. 6 and 7, the cam 36 is produced so that the distance between each point of its edge and the third axis of rotation 34 varies, from one point to another, according to an increasing (or decreasing) function ) keep on going.

De plus, pour que le coulisseau 31 agisse efficacement sur la gâchette 3, la surface de contact 30 entre la came 36 et le coulisseau 31 est toujours sensiblement perpendiculaire à la direction de déplacement du coulisseau 31 et de la gâchette 3. Lorsque l'utilisateur manoeuvre le bouton rotatif 32 de façon à entraîner en rotation la came 36 depuis sa position dans laquelle le coulisseau est en contact avec son point qui est le plus près de l'axe 34 jusqu'à sa position extrême représentée à la figure 7, dans laquelle cette extrémité du coulisseau est en contact avec le point de la tranche de la came le plus éloigné de l'axe 34, la rotation de la came 36 provoque une translation du coulisseau 31 qui actionne la gâchette à l'encontre des ressorts de rappel 13. Lorsque l'utilisateur manoeuvre le bouton rotatif 32 dans l'autre sens, les ressorts de rappel 13 repoussent progressivement la gâchette 3 et le coulisseau 31. La came 36 et le coulisseau 31 comprennent des butées 35 pour limiter la rotation de la came 36.In addition, in order for the slider 31 to act effectively on the trigger 3, the contact surface 30 between the cam 36 and the slider 31 is always substantially perpendicular to the direction of movement of the slider 31 and of the trigger 3. When the user operates the rotary button 32 so as to rotate the cam 36 from its position in which the slider is in contact with its point which is closest to the axis 34 to its extreme position shown in FIG. 7, in which this end of the slide is in contact with the point of the edge of the cam furthest from the axis 34, the rotation of the cam 36 causes a translation of the slide 31 which actuates the trigger against the return springs 13. When the user operates the rotary button 32 in the other direction, the return springs 13 gradually push back the trigger 3 and the slide 31. The cam 36 and the slide 31 include stops 35 to limit the rotation of the cam 36.

On voit, sur les figures 2, 3, 4, 6 et 7, que le coulisseau 31 est appliqué contre la gâchette 3 par son extrémité 37 comportant avantageusement deux éléments d'appui dépassant au-dessus de la surface 33 à travers une fenêtre 39 prévue dans celle-ci. Les deux éléments d'appui 37 sont séparés par un intervalle 38 d'une largeur légèrement supérieure à celle de l'élément d'actionnement 18, et situé au droit de cet élément d'actionnement 18 relativement à l'axe 17. L'intervalle 38 laisse une zone de la gâchette 3 exposée pour recevoir l'extrémité libre 22 de l'élément d'actionnement 18.We see, in Figures 2, 3, 4, 6 and 7, that the slider 31 is applied against the trigger 3 by its end 37 advantageously comprising two support elements protruding above the surface 33 through a window 39 provided in it. The two support elements 37 are separated by an interval 38 of a width slightly greater than that of the actuating element 18, and located at the right of this actuating element 18 relative to the axis 17. The interval 38 leaves an area of the trigger 3 exposed to receive the free end 22 of the actuating element 18.

Dans le mode de réalisation illustré, l'articulation de la partie de pédale 16 sur le boîtier 1 permet à la partie de pédale d'être placée dans une position relevée illustrée sur la figure 2. Dans cette position, la surface 33 et le bouton 32 deviennent accessibles. Le dispositif selon l'invention peut donc être utilisé soit en mode dit "de commande à pied", avec la partie de pédale 16 rabattue dans la position illustrée sur la figure 2, soit en mode dit "de commande à main", avec la partie de pédale relevée dans la position illustrée sur la figure 3. Ces deux modes d'utilisation du dispositif permettent de commander avec précision la vitesse de rotation d'un outil suivant une courbe de valeurs continue.In the illustrated embodiment, the articulation of the pedal part 16 on the housing 1 allows the pedal part to be placed in a raised position illustrated in FIG. 2. In this position, the surface 33 and the button 32 become accessible. The device according to the invention can therefore be used either in so-called "foot control" mode, with the pedal part 16 folded in the position illustrated in FIG. 2, or in so-called "hand control" mode, with the pedal part raised in the position illustrated in FIG. 3. These two modes of use of the device make it possible to precisely control the speed of rotation of a tool according to a continuous value curve.

Pour limiter de façon réglable la course de la gâchette 3 lors de l'utilisation de la partie de pédale 16, l'épaisseur de la cale 21 est réglable. Cette cale 21 a une forme générale cylindrique dont une face est appliquée contre la face inférieure 20 de la partie de pédale 16 et la face opposée reçoit l'extrémité 23 de l'élément d'actionnement 18. Cette dernière face de la cale 21 comporte, près de sa périphérie, plusieurs encoches radiales 24 de profondeurs différentes et de largeur correspondant à celle de l'extrémité 23 de l'élément d'actionnement 18. La cale 21 est montée pivotante sur la face inférieure 20 de la partie de pédale 16 autour d'un axe 26 perpendiculaire à cette face 20 et décalé par rapport à la position de l'élément d'actionnement 18, de façon que l'extrémité 23 de ce dernier s'engage dans l'une des encoches 24 de la cale 21.To adjustably limit the stroke of the trigger 3 when using the pedal part 16, the thickness of the shim 21 is adjustable. This shim 21 has a generally cylindrical shape, one face of which is applied against the lower face 20 of the pedal part 16 and the opposite face receives the end 23 of the actuating element 18. This last face of the shim 21 comprises , near its periphery, several radial notches 24 of different depths and width corresponding to that of the end 23 of the actuating element 18. The wedge 21 is pivotally mounted on the underside 20 of the pedal part 16 about an axis 26 perpendicular to this face 20 and offset from the position of the actuating element 18, so that the end 23 of the latter engages in one of the notches 24 of the wedge 21.

Dans le mode de réalisation selon les figures 2 à 7, les moyens de rappel élastiques 27 appliqués entre l'élément d'actionnement 18 et la partie de pédale 16 sont constitués par un ressort hélicoïdal disposé autour de l'axe 17 et sollicitant en rotation l'élément d'actionnement 18 vers la cale 21, de façon à maintenir l'extrémité 23 de l'élément 18 dans l'encoche sélectionnée de la cale 21 quelle que soit la position de la partie de pédale 16. C'est ainsi que l'action du ressort hélicoïdal 27 sur l'élément d'actionnement 18 devra être supérieure à l'action, sur cet élément, des ressorts de rappel 13 lorsque la gâchette revient vers sa position de repos. Pour régler la position angulaire de l'élément 18 par rapport à la partie de pédale 16, il suffit de modifier le réglage de la cale 21 de la façon suivante. L'utilisateur soulève la pédale jusqu'à la position relevée illustrée sur la figure 3, écarte manuellement l'élément 18 de la cale 21 à l'encontre du ressort 27, fait tourner la cale 21 autour de son axe 26 jusqu'à amener l'encoche sélectionnée 24 en face de l'extrémité 23 de l'élément 18, et relâche l'élément 18 qui est alors ramené vers la partie de pédale 16 par le ressort 27. La profondeur de l'encoche sélectionnée 24 définit la valeur maximum de la course de la gâchette 3, et donc la valeur maximum de la variation de la vitesse de rotation de l'outil.In the embodiment according to FIGS. 2 to 7, the elastic return means 27 applied between the actuating element 18 and the part of pedal 16 are constituted by a helical spring arranged around the axis 17 and urging in rotation the actuating element 18 towards the shim 21, so as to maintain the end 23 of the element 18 in the selected notch of the shim 21 whatever the position of the pedal part 16. This is how the action of the helical spring 27 on the actuating element 18 must be greater than the action, on this element, of the springs reminder 13 when the trigger returns to its rest position. To adjust the angular position of the element 18 with respect to the pedal part 16, it suffices to modify the adjustment of the shim 21 as follows. The user lifts the pedal to the raised position illustrated in FIG. 3, manually spreads the element 18 of the wedge 21 against the spring 27, rotates the wedge 21 around its axis 26 until it brings the selected notch 24 opposite the end 23 of the element 18, and releases the element 18 which is then brought back to the pedal part 16 by the spring 27. The depth of the selected notch 24 defines the value maximum of the travel of the trigger 3, and therefore the maximum value of the variation of the speed of rotation of the tool.

Claims (9)

Dispositif de commande d'un variateur (2) à curseur (14), caractérisé par le fait qu'il comporte: - un boîtier (1), - une gâchette (3), ladite gâchette pouvant se déplacer entre deux positions par rapport audit boîtier, l'une des deux dites positions constituant une position de repos, - des moyens (13) pour appliquer une force élastique sur ladite gâchette pour tendre à la ramener vers ladite position de repos, - des moyens (45) pour coupler ladite gâchette avec ledit curseur (14), - un levier (9), - des moyens (46) pour monter ledit levier en rotation par rapport audit boîtier autour d'un premier axe (17), - des moyens pour transformer le mouvement de rotation dudit levier en un mouvement de translation appliqué à ladite gâchette, - un coulisseau (31), - des moyens (28) pour monter ledit coulisseau en translation par rapport audit boîtier, une extrémité (37) dudit coulisseau étant apte à venir au contact de ladite gâchette, et - des moyens (10) pour commander la translation dudit coulisseau. Control device for a speed controller (2) with cursor (14), characterized in that it comprises: - a housing (1), a trigger (3), said trigger being able to move between two positions relative to said housing, one of the two said positions constituting a rest position, - means (13) for applying an elastic force to said trigger to tend to bring it back to said rest position, - means (45) for coupling said trigger with said cursor (14), - a lever (9), - means (46) for mounting said lever in rotation relative to said housing about a first axis (17), means for transforming the rotational movement of said lever into a translational movement applied to said trigger, - a slide (31), means (28) for mounting said slide in translation relative to said housing, one end (37) of said slide being able to come into contact with said trigger, and - Means (10) for controlling the translation of said slide. Dispositif selon la revendication 1, caractérisé par le fait que ledit boîtier comporte au moins deux premier (8) et second (15) logements séparés par une paroi mitoyenne (42), ledit variateur (2) étant disposé dans le premier logement (8) et ladite gâchette (3) débordant dans le second logement, ledit second logement (15) comportant au moins une ouverture (25), l'axe de rotation (17) dudit levier (9) étant situé sensiblement dans le plan de ladite ouverture (25) et les moyens (28) pour monter ledit coulisseau (31) en translation par rapport audit boîtier étant situés sensiblement sur la paroi (29) dudit second logement (15) qui est sensiblement opposée à ladite ouverture (25).Device according to Claim 1, characterized in that the said housing comprises at least two first (8) and second (15) housings separated by a dividing wall (42), the said variator (2) being arranged in the first housing (8) and said trigger (3) projecting into the second housing, said second housing (15) having at least one opening (25), the axis of rotation (17) of said lever (9) being located substantially in the plane of said opening ( 25) and the means (28) for mounting said slide (31) in translation relative to said housing being located substantially on the wall (29) of said second housing (15) which is substantially opposite to said opening (25). Dispositif selon la revendication 2, caractérisé par le fait que ledit levier (9) constitue sensiblement une paroi de fermeture de ladite ouverture (25) dudit second logement (15).Device according to claim 2, characterized in that said lever (9) constitutes substantially a closure wall of said opening (25) of said second housing (15). Dispositif selon la revendication 3, caractérisé par le fait qu'il comporte des moyens pour escamoter ledit levier pour permettre l'accès à l'intérieur dudit second logement (15).Device according to claim 3, characterized in that it comprises means for retracting said lever to allow access to the interior of said second housing (15). Dispositif selon l'une des revendications 1 à 4, caractérisé par le fait que ledit levier (9) est constitué par une partie de pédale (16), un élément d'actionnement (18) et des moyens pour monter ledit élément d'actionnement en rotation par rapport à ladite partie de pédale autour d'un deuxième axe (41) sensiblement parallèle audit premier axe (17), lesdits moyens pour transformer le mouvement de rotation dudit levier en un mouvement de translation de ladite gâchette étant constitués par l'extrémité libre (22) de l'élément d'actionnement (18) montée en coopération par glissement avec une face (40) de ladite gâchette (3).Device according to one of Claims 1 to 4, characterized in that the said lever (9) consists of a pedal part (16), an actuating element (18) and means for mounting the said actuating element in rotation relative to said pedal part about a second axis (41) substantially parallel to said first axis (17), said means for transforming the rotational movement of said lever into a translational movement of said trigger being constituted by the free end (22) of the actuating element (18) mounted in sliding cooperation with a face (40) of said trigger (3). Dispositif selon la revendication 5, caractérisé par le fait qu'il comporte en outre des moyens (21) pour définir la position angulaire dudit élément d'actionnement (18) par rapport à ladite partie de pédale (16) et des moyens de rappel élastiques (27) appliqués entre ledit élément d'actionnement et ladite partie de pédale.Device according to claim 5, characterized in that it further comprises means (21) for defining the angular position of said actuating element (18) relative to said pedal part (16) and elastic return means (27) applied between said actuating element and said pedal part. Dispositif selon l'une des revendications 1 à 6, caractérisé par le fait que les moyens (10) pour commander la translation dudit coulisseau (31) comportent des moyens de manoeuvre manuelle (32) pour délivrer un mouvement de rotation autour d'un troisième axe (34) sensiblement perpendiculaire audit premier axe (17) et au déplacement dudit coulisseau, et des moyens pour transformer ce mouvement de rotation en un mouvement de translation dudit coulisseau (31).Device according to one of claims 1 to 6, characterized in that the means (10) for controlling the translation of said slide (31) comprise manual operating means (32) for delivering a rotational movement around a third axis (34) substantially perpendicular to said first axis (17) and to the movement of said slide, and means for transforming this rotational movement into a translational movement of said slide (31). Dispositif selon la revendication 7, caractérisé par le fait que les moyens de manoeuvre manuelle pour délivrer un mouvement de rotation autour dudit troisième axe (34) comportent un bouton rotatif (32), et que les moyens pour transformer le mouvement de rotation en un mouvement de translation dudit coulisseau comportent une came (36) solidaire dudit bouton rotatif, ladite came étant réalisée de façon que la distance entre chaque point de sa tranche (43) et l'axe de rotation (34) varie, d'un point à un autre, suivant une fonction croissante continue, l'extrémité (36) du coulisseau opposée à celle (37) qui est au contact de la gâchette étant en coopération par glissement avec la tranche de ladite came.Device according to claim 7, characterized in that the manual operating means for delivering a rotational movement around said third axis (34) comprise a rotary button (32), and that the means for transforming the rotational movement into a movement for translating said slide comprises a cam (36) integral with said rotary button, said cam being produced so that the distance between each point of its edge (43) and the axis of rotation (34) varies, from point to point other, according to a continuous increasing function, the end (36) of the slide opposite to that (37) which is in contact with the trigger being in sliding cooperation with the edge of said cam. Dispositif selon l'une des revendications 1 à 8, caractérisé par le fait que lesdits premier (17) et second (41) axes sont confondus.Device according to one of claims 1 to 8, characterized in that said first (17) and second (41) axes are combined.
EP93400459A 1992-03-06 1993-02-23 Actuator device for a slider control Expired - Lifetime EP0559521B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9202730A FR2688326A1 (en) 1992-03-06 1992-03-06 CONTROL DEVICE.
FR9202730 1992-03-06

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EP0559521B1 EP0559521B1 (en) 1996-07-24

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US (1) US5321383A (en)
EP (1) EP0559521B1 (en)
DE (1) DE69303741T2 (en)
FR (1) FR2688326A1 (en)

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Also Published As

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FR2688326A1 (en) 1993-09-10
US5321383A (en) 1994-06-14
DE69303741T2 (en) 1997-03-06
EP0559521B1 (en) 1996-07-24
DE69303741D1 (en) 1996-08-29

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