EP0886292B1 - Low profile switch for control panel, in particular for car heating, ventilation and/or climatisation devices - Google Patents

Low profile switch for control panel, in particular for car heating, ventilation and/or climatisation devices Download PDF

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Publication number
EP0886292B1
EP0886292B1 EP98401487A EP98401487A EP0886292B1 EP 0886292 B1 EP0886292 B1 EP 0886292B1 EP 98401487 A EP98401487 A EP 98401487A EP 98401487 A EP98401487 A EP 98401487A EP 0886292 B1 EP0886292 B1 EP 0886292B1
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EP
European Patent Office
Prior art keywords
switch according
tracks
track
projections
arms
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP98401487A
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German (de)
French (fr)
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EP0886292A1 (en
Inventor
Louis Jean Michel Lacroix
Henry Beraud
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Valeo Climatisation SA
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Valeo Electronique SA
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Publication of EP0886292A1 publication Critical patent/EP0886292A1/en
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    • 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
    • H01H19/54—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 the operating part having at least five or an unspecified number of operative positions
    • H01H19/56—Angularly-movable actuating part carrying contacts, e.g. drum switch
    • H01H19/58—Angularly-movable actuating part carrying contacts, e.g. drum switch having only axial contact pressure, e.g. disc switch, wafer switch
    • 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
    • H01H19/02—Details
    • H01H19/10—Movable parts; Contacts mounted thereon
    • H01H19/12—Contact arrangements for providing make-before-break operation, e.g. for on-load tap-changing

Definitions

  • the invention relates to electrical switches, and more especially switchgear power switches control, including heating, ventilation installation and / or air conditioning of a motor vehicle.
  • This invention relates more particularly still to electrical switches comprising a body mounted to rotation around an axis perpendicular to tracks primary and a secondary feed track, forming a set of electrically conductive tracks and geometries selected individuals.
  • the body supports radially at at least two electrically interconnected conductive projections, carrying a total of at least three contact pads.
  • one of the two projections carries two studs intended to ensure a double surface contact on one primary tracks or two surface contacts simple on two neighboring tracks.
  • This type of switch is disclosed, for example, by the publication FR-95 10566 of the Applicant. It is generally used to control an electrical appliance, such as for example the electric motor of a blower.
  • the primary tracks of game are connected to resistors of different values. So according to the contacts made by the switch, and therefore depending on its angular position, a user can manage the engine speed, and therefore the flow treated air which opens into the passenger compartment of the vehicle.
  • this switch Due to its configuration, this switch has a certain size, especially radial, which may limit it use in certain types of vehicles. In addition, his space does not allow to control the installation according to different operating modes (at least two).
  • An object of the invention is therefore to provide a switch electric, for control panel, which does not have all or part of the disadvantages of switches in the prior art.
  • the invention proposes an electrical switch of the type described in the introduction, in which the projections are shaped so that two of the three studs establish a contact in the foreground while the third stud establishes a contact in a second plane which can be substantially parallel to the first.
  • two of the studs among the three are angularly spaced and contact at least one of the primary tracks, when the body is placed in certain predetermined positions, the distance tangential, corresponding to the angular difference between these two pads spaced angularly, being greater than the tangential distance between two neighboring and lower tracks to the tangential dimension of each primary track.
  • either primary tracks and the secondary track are noticeably coplanar and define by upper faces and lower respectively the first and second planes, that is the primary tracks and the secondary track are placed respectively in two substantially parallel planes and respectively define by their opposite faces one on the other, or opposed to each other, the first and second shots.
  • the tracks primary and secondary are distributed respectively substantially in first and second annular zones located on the periphery of the switch body. These areas annulars may extend over 180 °, or even over 360 °.
  • the first and second annular zones are located at the periphery of the body at distances chosen so that they do not overlap.
  • the radial distance between the first and second zones will advantageously be chosen lower than the radial distance between the studs making contacts in one plane.
  • the first and second zones annulars may overlap or not.
  • the projections also carry a fourth contact pad so that a second contact can be established between the projections and the secondary track Power.
  • the protrusions when there are two of them, can be made in many forms. They can be notably substantially superimposed in planes parallel to the first and second planes. But, they can also be positioned diametrically opposite and each have at the end of their radial part first and second curved arms which roll up in a same direction around the periphery of the body and are placed substantially in planes parallel to the first and second shots, the first and second arms of the projections opposite preferably winding in directions opposed.
  • the arms that these may be of different shapes depending on, from hand, that the contacts are established on primary tracks and secondary coplanar or distributed on two planes superimposed, and on the other hand, the shapes (or geometries) chosen tracks. So the first and second arms curved from each projection can be rolled up by presenting the same radius of curvature, constant or not (increasing or decreasing), or different radii of curvature. Of even, these arms may have lengths substantially identical or different so that the studs of a protrusion are offset angularly.
  • the arms have a substantially axial curvature produced by folding their base, each arm having a part extremally closer axially to a runway than is its base of this same track. This ensures a elastic contact between a track and a projection by through a point of contact.
  • the game of primary and secondary tracks is connected to a motor electrical installation.
  • the treasure hunt can include also, in selected places, tertiary tracks belonging to control circuits of organs of the vehicle other than the installation's electric motor. It could in particular be one or more tracks of a lighting circuit.
  • This characteristic concerns more particularly the embodiments of the invention in which the secondary track is superimposed on the tracks primary, since it is then possible to place several tertiary tracks next to the secondary track, below (or above) the primary tracks.
  • the switch according to the invention controls an electric motor managing the speed of a blower in the installation
  • This type of dual function switch is made possible because of the space saved thanks to the invention.
  • the projections are extensions radials of a metal ring folded so as to form two superimposed half-rings. So the ring and its extensions can be done in a single step by precut of a flat disc.
  • FIG. 1 A first embodiment of an electrical switch according to the invention.
  • This embodiment is called “mono-ply”. It concerns a rotary switch intended, in the example illustrated in the figures, piloting an installation motor vehicle heating and / or air conditioning (not shown in Figure 1). Of course, this type of rotary electric switch could be used in other types of facilities.
  • this type of switch comprises a body 1 rotatably mounted around a axis XX and integral in an upper part of an organ 3 protruding from the top a control box 4 through an orifice provided in the instrument panel 5 of the vehicle.
  • the controller 3 is realized in the form of a rotary button suitable for being rotated by a passenger-user housed in the passenger compartment of the vehicle. As illustrated in the Figures 14 and 15, this rotary button 3 can take several positions which correspond respectively to settings part of the installation.
  • the electrical switch is more particularly intended for set the speed of a group blower (not shown) motor-fan of the heating installation and / or vehicle air conditioning.
  • the rotary button 3 can take 4 materialized positions, for example on the dashboard 5, with the digits 0 to 3, each position corresponding to different fan modes, and by therefore at different air flow rates. In others terms, each position corresponds to an intensity of supply current of the blower which is different from the neighboring position. Position 0 indicates the position of "rest” (or deactivation) of the blower, and position 3 the one in which the treated air flow is maximum.
  • the rotary button 3 illustrated in FIG. 15 ensures two functions: management of both the air flows from the exterior of the vehicle and the interior of the passenger compartment (also called recirculated air).
  • the button control, and therefore the electrical switch can take seven different positions, one position central unit corresponding to the deactivation of the pulser, and twice three corresponding side positions at three different blower speeds, respectively for the supply of recirculated air and outside air.
  • the body 1 of the rotary switch also supports, in a lower part 6, a slider 7 (see FIG. 3) made of an electrically conductive material.
  • This cursor 7 is intended to establish electrical contacts between primary 8-i tracks and a secondary track feed 9, which tracks constitute a set of tracks (see Figure 2).
  • These tracks are made of an electrically conductive material, such as copper, and are maintained like this is better illustrated in Figures 2 and 5, one next to the other others by a support 10 formed in an insulating material, such as for example a plastic-type synthetic material.
  • the primary and secondary tracks are distributed over an angular sector of approximately 180 °. But they could extend over 180 °, even 360 °, as required.
  • the secondary feed track 9 has a partially shaped central part 11 annular, intended to surround the body 1 at a distance device R1 of axis XX, and ends in one of its ends by a pin 12 allowing connection to a connector (not shown in the figures).
  • the primary tracks 8-i are placed beyond the track secondary supply 9, at a peripheral distance R2 of axis XX (R2> R1). They each include a first partially annular part which ends, like the secondary feed track 9, by a second part forming a pin 13 intended to be introduced into the aforementioned connector. These first parts are therefore distributed in a second annular zone which surrounds, in this example, the first annular zone 11.
  • the secondary feed track 9 is intended to be connected, via the connector, to a current generator or Of voltage.
  • the primary 8-i tracks are independent and electrically isolated from each other. They are respectively connected, always via the connector, to resistors (not shown) of different values and forming an integral part of the supply circuit of the electric motor of the blower. So according to the primary track 8-i which is contacted by cursor 7 at the same time as the secondary track 9, the current which feeds the motor electric of the blower varies.
  • the cursor 7 (see Figures 3 and 5) includes projections 14-1 and 14-2 each comprising a linear part substantially radial, extended, in the example illustrated, by two arms 16-a and 16-b, of form general circular, carrying at their end a stud contact 15 intended to establish an electrical contact between the projection which carries it and the track contacted.
  • the arms 16 are wound around an annular portion 17 of the cursor 7 electrically connecting the two projections 14 between them.
  • the cursor 7 is first of all precut in a flat disc, preferably metallic, so that form the circular portion 17, the projections 14 and the arms 16. Then, the cursor 7 is folded along a diameter of the annular part so that the arms 16 of each projection 14 are distributed in two substantially parallel planes between them and called upper and lower.
  • the contact pads 15 are produced by stamping of the terminal part of the arms, using a appropriate tool. Such stamping can be carried out after the step of cutting the cursor 7, and before folding.
  • the two projections 14 are substantially diametrically opposite and their pairs of arms roll up, after folding, in two opposite directions, one in the direction clockwise and the other counterclockwise.
  • the contact pads 15 are found, therefore, all grouped in a region of low volume.
  • the first projection 14-1 is intended to establish a double contact with the secondary track supply 9, which is located closer to the axis XX than are the primary tracks 8-i. It's here reason why, in this example, arms 16-a and 16-b worn by this first projection 14-1 have substantially identical dimensions (length and curvature). The arms 16 extend here over an angular sector of approximately 90 °, and their contact pads 15 are therefore substantially face.
  • arms 16-a and 16-b have an axial curvature obtained after the step of cutting, by folding their base 18 located at the end of the linear part of the corresponding projection 14.
  • the radius of curvature of the arms 16-a and 16-b of the first projection 14-1 decreases from base 18 towards the terminal part opposite bearing the contact pad 15.
  • the two arms 16-a and 16-b carried by the second projection 14-2 are made according to the same principle as those worn by the first projection 14-1. In this example, they only show, however not identical lengths.
  • the studs of contact 15 carried by these two arms 16-a and 16-b are not therefore not superimposed one above the other. They are angularly offset by a distance greater than the circumferential (or tangential) distance between two neighboring tracks (primary or primary and secondary), and less than the circumferential extension of the tracks primary 8-i in the second annular zone.
  • the arms 16-a and 16-b of the second projection 14-2 can establish either a double contact on the faces upper and lower of a primary track 8-i, i.e. two mono-contacts on the upper face of a track and the face lower of the neighboring track so as to short-circuit them without interrupting the power supply to the motor.
  • the switch is between two of its predetermined positions but a current continues to circulate, which avoids electric arcs ensuring continuity of supply of the motor by a point contact.
  • the four studs 15 carried by the two projections 14 must be close to each other. This is why, in this example, the arms carried by the second projection 14-2 extend over an angular sector of approximately 90 °. Through elsewhere, so that the arms of the second projection 14-2 can wrap around the arms carried by the first protrusion 14-1, their respective curvatures grow with their base 18 towards their terminal part carrying the stud contact 15.
  • arms 16-a and 16-b of the second projection 14-2 can establish contacts with respectively the upper and lower faces of primary tracks 8, which are then inserted between their respective studs.
  • the respective shapes of the arms carried by the protrusions depend on the shape chosen for each of the tracks of the treasure hunt. The same goes for positioning radial projections, which are not necessarily positioned diametrically opposite. So, we could provide two substantially protruding radial projections superimposed one above the other, and bearing in places spaced radially, or not, two arms intended to each establish contact with the upper faces or lower secondary feed tracks 9 and primary 8-i. Similarly, in the case of diametrically protruding opposite, we can consider a variant in which the arms 16-a contained substantially in the upper plane conform to contact the single track secondary feed 9, while arms 16-b substantially contained in the lower plane are shaped so as to establish contacts with the only tracks primary 8-i (outside the rest position). Many still other variants can be envisaged.
  • Immobilization of the cursor 7 on the body 1 of the switch takes place in a lower part 6 of it thanks to immobilization means, of the protruding type 19 (see figure 4) intended to cooperate with notches formed on said cursor 7, for example at its radial projections 14-1 and 14-2.
  • a switch according to the invention can also integrate tracks services belonging to supply circuits or other parts of the vehicle, such as example lighting.
  • tracks services belonging to supply circuits or other parts of the vehicle such as example lighting.
  • Such a variant is illustrated on the figure 6.
  • Tertiary tracks 20-1 to 20-5 are here held by the support 10 in a plane substantially parallel to that of the primary 8-i and secondary 9 tracks.
  • FIGS. 7 to 13 we now refer more particularly to FIGS. 7 to 13 to describe a second embodiment of the invention, says bi-tablecloth.
  • the secondary supply track 9 is no longer located in the same plane as the slopes primary 8-i. As is more particularly illustrated in FIG. 8A, the secondary feed track is now found below (or above) the slopes primary 8-1 to 8-4. These two types of tracks are by therefore kept side by side, and one above or below the others by the support 10, whence the designation "bi-tablecloth".
  • the annular parts of the 8-i primary tracks and the secondary feed track 9 preferably overlap substantially. But he could be otherwise in variants.
  • two variants can be considered, depending on whether arms 16-a and 16-b of radial projections 14 are located between the tracks primary 8-i and the secondary feed track 9, or although these same arms frame the primary tracks and the secondary feed track.
  • this second embodiment allows integration into the tertiary tracks switch 20.
  • These tertiary tracks can be placed in the plane containing the track secondary supply 9, as illustrated in the figure 12. But, we can also provide tertiary tracks in the same plane as the primary tracks 8-i.
  • track support 10 will be adapted depending on the number of primary, secondary and tertiary, and their respective forms.
  • the shapes arms may vary according to the shape of the tracks primary 8-i and secondary feed track 9.
  • the track set illustrated in FIG. 8A is more particularly suitable for managing a single function, such as for example that of the outside air flow treated by the kicker.
  • a single function such as for example that of the outside air flow treated by the kicker.
  • the switch according to the invention in bi-function mode, as illustrated in figure 15, it is necessary to adapt the primary tracks 8-i of the figure 8A.
  • the primary tracks 8-i are now spread over substantially 360 °.
  • Runway 8-1 corresponds substantially to the position 0 illustrated in FIG. 15, while the tracks 8-2 to 8-4 correspond to positions 1 to 3 of each function.
  • these tracks 8-2 to 8-4 include two electrically connected parts, so that the contact of either part of a track ensures the same power supply at the electric motor.
  • the switch body is mechanically coupled to a cam path that manages the position of one or more air intake shutters.

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  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Switches With Compound Operations (AREA)
  • Push-Button Switches (AREA)

Description

L'invention concerne les commutateurs électriques, et plus particulièrement les commutateurs de puissance pour tableau de commande, notamment d'installation de chauffage, ventilation et/ou climatisation de véhicule automobile.The invention relates to electrical switches, and more especially switchgear power switches control, including heating, ventilation installation and / or air conditioning of a motor vehicle.

Cette invention concerne plus particulièrement encore les commutateurs électriques comprenant un corps monté à rotation autour d'un axe perpendiculaire à des pistes primaires et une piste secondaire d'alimentation, formant un jeu de pistes électriquement conductrices et de géométries individuelles choisies. Le corps supporte radialement au moins deux saillies conductrices et interconnectées électriquement, portant en tout au moins trois plots de contact. Généralement, l'une des deux saillies porte deux plots destinés à assurer un contact surfacique double sur l'une des pistes primaires ou bien deux contacts surfaciques simples sur deux pistes voisines.This invention relates more particularly still to electrical switches comprising a body mounted to rotation around an axis perpendicular to tracks primary and a secondary feed track, forming a set of electrically conductive tracks and geometries selected individuals. The body supports radially at at least two electrically interconnected conductive projections, carrying a total of at least three contact pads. Generally, one of the two projections carries two studs intended to ensure a double surface contact on one primary tracks or two surface contacts simple on two neighboring tracks.

Ce type de commutateur est divulgué, par exemple, par la publication FR-95 10566 de la Demanderesse. Il sert généralement à commander un appareil électrique, comme par exemple le moteur électrique d'un pulseur. Les pistes primaires du jeu sont connectées à des résistances de valeurs différentes. Ainsi, selon les contacts établis par le commutateur, et par conséquent selon sa position angulaire, un utilisateur peut gérer le régime du moteur, et donc le débit d'air traité qui débouche dans l'habitacle du véhicule.This type of switch is disclosed, for example, by the publication FR-95 10566 of the Applicant. It is generally used to control an electrical appliance, such as for example the electric motor of a blower. The primary tracks of game are connected to resistors of different values. So according to the contacts made by the switch, and therefore depending on its angular position, a user can manage the engine speed, and therefore the flow treated air which opens into the passenger compartment of the vehicle.

En raison de sa configuration, ce commutateur présente un certain encombrement, notamment radial, qui peut en limiter l'utilisation à certains types de véhicules. De plus, son encombrement ne permet pas de commander l'installation selon des modes de fonctionnement différents (au moins deux). Due to its configuration, this switch has a certain size, especially radial, which may limit it use in certain types of vehicles. In addition, his space does not allow to control the installation according to different operating modes (at least two).

Un but de l'invention est donc de procurer un commutateur électrique, pour tableau de commande, qui ne présente pas tout ou partie des inconvénients des commutateurs de la technique antérieure.An object of the invention is therefore to provide a switch electric, for control panel, which does not have all or part of the disadvantages of switches in the prior art.

L'invention propose à cet effet un commutateur électrique du type décrit en introduction, dans lequel les saillies sont conformées pour que deux des plots parmi les trois établissent un contact en un premier plan tandis que le troisième plot établit un contact en un second plan pouvant être sensiblement parallèle au premier. De plus, deux des plots parmi les trois sont espacés angulairement et contactent l'une au moins des pistes primaires, lorsque le corps est placé dans certaines positions prédéterminées, la distance tangentielle, correspondant à l'écart angulaire entre ces deux plots espacés angulairement, étant supérieure à la distance tangentielle entre deux pistes voisines et inférieure à la dimension tangentielle de chaque piste primaire.To this end, the invention proposes an electrical switch of the type described in the introduction, in which the projections are shaped so that two of the three studs establish a contact in the foreground while the third stud establishes a contact in a second plane which can be substantially parallel to the first. In addition, two of the studs among the three are angularly spaced and contact at least one of the primary tracks, when the body is placed in certain predetermined positions, the distance tangential, corresponding to the angular difference between these two pads spaced angularly, being greater than the tangential distance between two neighboring and lower tracks to the tangential dimension of each primary track.

On entend par distance tangentielle, ou encore distance circonférentielle, la distance linéaire qui sépare deux points situés sur une même portion d'arc de cercle, ou bien deux points projetés sur un plan et appartenant respectivement à des portions d'arcs de cercle sensiblement parallèles.By tangential distance, or distance circumferential, the linear distance between two points located on the same portion of an arc, or two points projected on a plane and belonging respectively to portions of substantially parallel arcs of a circle.

Deux configurations peuvent être envisagées : soit les pistes primaires et la piste secondaire sont sensiblement coplanaires et définissent par des faces supérieure et inférieure respectivement les premier et second plans, soit les pistes primaires et la piste secondaire sont placées respectivement dans deux plans sensiblement parallèles et définissent respectivement par leurs faces en regard l'une de l'autre, ou opposées l'une à l'autre, les premier et second plans.Two configurations can be envisaged: either primary tracks and the secondary track are noticeably coplanar and define by upper faces and lower respectively the first and second planes, that is the primary tracks and the secondary track are placed respectively in two substantially parallel planes and respectively define by their opposite faces one on the other, or opposed to each other, the first and second shots.

Selon une autre caractéristique de l'invention, les pistes primaires et secondaire sont respectivement réparties sensiblement dans de première et seconde zones annulaires situées en périphérie du corps du commutateur. Ces zones annulaires pourront s'étendre sur plus de 180°, voire même sur 360°. Par ailleurs, lorsque les contacts s'établissent sur des pistes primaires et secondaire coplanaires, il est particulièrement avantageux que les première et seconde zones annulaires soient situées en périphérie du corps à des distances choisies de sorte qu'elles ne se recouvrent pas. Dans ce cas, la distance radiale entre les première et seconde zones sera avantageusement choisie inférieure à la distance radiale séparant les plots établissant des contacts en un même plan. En revanche, lorsque les contacts s'établissent sur des pistes primaires et secondaire réparties sur deux plans superposés, les première et seconde zones annulaires pourront se recouvrir ou non.According to another characteristic of the invention, the tracks primary and secondary are distributed respectively substantially in first and second annular zones located on the periphery of the switch body. These areas annulars may extend over 180 °, or even over 360 °. In addition, when contacts are established on primary and secondary coplanar tracks, it is particularly advantageous than the first and second annular zones are located at the periphery of the body at distances chosen so that they do not overlap. In this case, the radial distance between the first and second zones will advantageously be chosen lower than the radial distance between the studs making contacts in one plane. However, when contacts are established on primary and secondary tracks distributed on two superimposed planes, the first and second zones annulars may overlap or not.

Préférentiellement, les saillies portent également un quatrième plot de contact de sorte qu'un second contact puisse être établi entre les saillies et la piste secondaire d'alimentation. Dans ce cas, il est particulièrement avantageux de prévoir deux saillies portant chacune deux plots de contact.Preferably, the projections also carry a fourth contact pad so that a second contact can be established between the projections and the secondary track Power. In this case, it is particularly advantageous to provide two projections each carrying two contact pads.

Les saillies, lorsqu'elles sont au nombre de deux, peuvent être réalisées sous de nombreuses formes. Elles pourront être notamment sensiblement superposées dans des plans parallèles aux premier et second plans. Mais, elles pourront également être positionnées de façon diamétralement opposée et comporter chacune à l'extrémité de leur partie radiale des premier et second bras courbés qui s'enroulent selon une même direction autour de la périphérie du corps et sont placés sensiblement dans des plans parallèles aux premier et second plans, les premier et second bras des saillies opposées s'enroulant de préférence selon des directions opposées.The protrusions, when there are two of them, can be made in many forms. They can be notably substantially superimposed in planes parallel to the first and second planes. But, they can also be positioned diametrically opposite and each have at the end of their radial part first and second curved arms which roll up in a same direction around the periphery of the body and are placed substantially in planes parallel to the first and second shots, the first and second arms of the projections opposite preferably winding in directions opposed.

Tout comme pour les saillies, les bras que ces dernières comportent pourront être de différentes formes selon, d'une part, que les contacts s'établissent sur des pistes primaires et secondaire coplanaires ou réparties sur deux plans superposés, et d'autre part, les formes (ou géométries) choisies des pistes. Ainsi, les premier et second bras courbés de chaque saillie pourront s'enrouler en présentant un même rayon de courbure constant ou non (croissant ou décroissant), ou bien des rayons de courbure différents. De même, ces bras pourront présenter des longueurs sensiblement identiques ou bien différentes de sorte que les plots d'une saillie soient décalés angulairement.Just like the projections, the arms that these may be of different shapes depending on, from hand, that the contacts are established on primary tracks and secondary coplanar or distributed on two planes superimposed, and on the other hand, the shapes (or geometries) chosen tracks. So the first and second arms curved from each projection can be rolled up by presenting the same radius of curvature, constant or not (increasing or decreasing), or different radii of curvature. Of even, these arms may have lengths substantially identical or different so that the studs of a protrusion are offset angularly.

Selon encore une autre caractéristique de l'invention, les bras présentent une courbure sensiblement axiale réalisée par pliage de leur embase, chaque bras présentant une partie extrémale plus proche axialement d'une piste que ne l'est son embase de cette même piste. Cela permet d'assurer un contact élastique entre une piste et une saillie par l'intermédiaire d'un point de contact.According to yet another characteristic of the invention, the arms have a substantially axial curvature produced by folding their base, each arm having a part extremally closer axially to a runway than is its base of this same track. This ensures a elastic contact between a track and a projection by through a point of contact.

Dans une application préférée de l'invention, le jeu de pistes primaires et secondaire est connecté à un moteur électrique de l'installation.In a preferred application of the invention, the game of primary and secondary tracks is connected to a motor electrical installation.

Selon encore une autre caractéristique de l'invention, du fait du gain de place réalisé, le jeu de piste peut comprendre également, en des endroits choisis, des pistes tertiaires appartenant à des circuits de commande d'organes du véhicule autres que le moteur électrique de l'installation. Il pourra notamment s'agir d'une ou plusieurs pistes d'un circuit d'éclairage. Cette caractéristique concerne plus particulièrement les modes de réalisation de l'invention dans lesquels la piste secondaire est superposée aux pistes primaires, puisqu'il est alors possible de placer plusieurs pistes tertiaires à côté de la piste secondaire, en dessous (ou au dessus) des pistes primaires.According to yet another characteristic of the invention, saving space, the treasure hunt can include also, in selected places, tertiary tracks belonging to control circuits of organs of the vehicle other than the installation's electric motor. It could in particular be one or more tracks of a lighting circuit. This characteristic concerns more particularly the embodiments of the invention in which the secondary track is superimposed on the tracks primary, since it is then possible to place several tertiary tracks next to the secondary track, below (or above) the primary tracks.

Dans un mode de réalisation particulier dans lequel le commutateur selon l'invention commande un moteur électrique gérant le régime d'un pulseur de l'installation, on peut lui adjoindre un mécanisme permettant la commutation de l'alimentation en air du pulseur entre des modes dits "extérieur" (alimentation en air extérieur) et "recirculé" (alimentation en air recirculé). Ce type de commutateur à double fonction est rendu possible du fait du gain de place obtenu grâce à l'invention. Dans ce mode de réalisation, il est possible de subdiviser en deux parties connectées électriquement l'une au moins des pistes primaires de sorte que le régime du moteur puisse être réglé en mode extérieur comme en mode recirculé.In a particular embodiment in which the switch according to the invention controls an electric motor managing the speed of a blower in the installation, we can add a mechanism for switching the power supply in blower air between so-called "outdoor" modes (external air supply) and "recirculated" (supply in recirculated air). This type of dual function switch is made possible because of the space saved thanks to the invention. In this embodiment, it is possible to subdivide into two electrically connected parts, one at least primary tracks so the scheme of the motor can be set in outdoor mode as in recirculated.

Préférentiellement, les saillies sont des extensions radiales d'un anneau métallique replié de façon à former deux demi-anneaux superposés. Ainsi, l'anneau et ses extensions peuvent être réalisés en une unique étape par prédécoupe d'un disque plan.Preferably, the projections are extensions radials of a metal ring folded so as to form two superimposed half-rings. So the ring and its extensions can be done in a single step by precut of a flat disc.

Dans la description qui suit, faite à titre d'exemple, on se réfère aux dessins annexés, sur lesquels :

  • la figure 1 est un schéma illustrant un commutateur selon l'invention dans un premier mode de réalisation dit "mono-nappe", dans une vue en coupe transversale, partiellement éclatée;
  • la figure 2 est un schéma illustrant un jeu de pistes selon l'invention propre à être utilisé dans un commutateur du type de celui illustré sur la figure 1;
  • la figure 3 est un schéma illustrant un "contacteur" selon l'invention, dans un mode de réalisation adapté à la forme des pistes de la figure 2;
  • la figure 4 est un schéma illustrant la partie du corps du commutateur destinée à supporter le "contacteur" de la figure 3;
  • la figure 5 est un schéma illustrant, en vue du dessus, le jeu de pistes de la figure 2 et le contacteur de la figure 3;
  • la figure 6 est une variante du jeu de pistes de la figure 2;
  • la figure 7 est un schéma illustrant partiellement un commutateur selon l'invention dans un second mode de réalisation dit "bi-nappe", dans une vue en coupe transversale, partiellement éclatée;
  • la figure 8A est un schéma illustrant un jeu de pistes selon l'invention propre à être utilisé dans un commutateur du type de celui illustré sur la figure 7;
  • la figure 8B est un schéma illustrant un "contacteur" selon l'invention, dans un mode de réalisation adapté à la forme des pistes de la figure 8A;
  • la figure 9 est un schéma illustrant, en vue du dessous, la nappe supérieure du jeu de pistes de la figure 8A et la partie supérieure du contacteur de la figure 8B;
  • la figure 10 est un schéma illustrant, en vue du dessus, la nappe inférieure du jeu de pistes de la figure 8A et la partie inférieure du contacteur de la figure 8B;
  • la figure 11 est une première variante de la nappe supérieure du jeu de pistes de la figure 8A;
  • la figure 12 est une seconde variante de la nappe supérieure du jeu de pistes de la figure 8A;
  • la figure 13 est une variante de la nappe inférieure du jeu de pistes de la figure 8A, destinée à coopérer avec la nappe supérieure illustrée sur la figure 12;
  • les figures 14 et 15 illustrent schématiquement les différentes positions que peuvent prendre les commutateurs munis des jeux de pistes illustrés respectivement sur les figures 2 et 11.
In the description which follows, given by way of example, reference is made to the appended drawings, in which:
  • Figure 1 is a diagram illustrating a switch according to the invention in a first embodiment called "mono-ply", in a cross-sectional view, partially exploded;
  • Figure 2 is a diagram illustrating a set of tracks according to the invention suitable for use in a switch of the type illustrated in Figure 1;
  • Figure 3 is a diagram illustrating a "contactor" according to the invention, in an embodiment adapted to the shape of the tracks of Figure 2;
  • Figure 4 is a diagram illustrating the part of the switch body intended to support the "contactor" of Figure 3;
  • FIG. 5 is a diagram illustrating, from above, the set of tracks in FIG. 2 and the contactor in FIG. 3;
  • Figure 6 is a variant of the track game of Figure 2;
  • Figure 7 is a diagram partially illustrating a switch according to the invention in a second embodiment called "bi-ply", in a cross-sectional view, partially exploded;
  • FIG. 8A is a diagram illustrating a set of tracks according to the invention suitable for being used in a switch of the type of that illustrated in FIG. 7;
  • FIG. 8B is a diagram illustrating a "contactor" according to the invention, in an embodiment adapted to the shape of the tracks of FIG. 8A;
  • FIG. 9 is a diagram illustrating, in view from below, the upper ply of the track set of FIG. 8A and the upper part of the contactor of FIG. 8B;
  • FIG. 10 is a diagram illustrating, in top view, the lower ply of the track set of FIG. 8A and the lower part of the contactor of FIG. 8B;
  • FIG. 11 is a first variant of the upper ply of the set of tracks of FIG. 8A;
  • FIG. 12 is a second variant of the upper ply of the set of tracks in FIG. 8A;
  • FIG. 13 is a variant of the lower ply of the set of tracks in FIG. 8A, intended to cooperate with the upper ply illustrated in FIG. 12;
  • FIGS. 14 and 15 schematically illustrate the different positions that the switches fitted with the sets of tracks illustrated in FIGS. 2 and 11 can take.

On se réfère tout d'abord aux figures 1 à 5 pour décrire un premier mode de réalisation d'un commutateur électrique selon l'invention. Ce mode de réalisation est dit "mono-nappe". Il concerne un commutateur rotatif destiné, dans l'exemple illustré sur les figures, à piloter une installation de chauffage et/ou climatisation de véhicule automobile (non représentée sur la figure 1). Bien entendu, ce type de commutateur électrique rotatif pourrait être utilisé dans d'autres types d'installations.We first refer to Figures 1 to 5 to describe a first embodiment of an electrical switch according to the invention. This embodiment is called "mono-ply". It concerns a rotary switch intended, in the example illustrated in the figures, piloting an installation motor vehicle heating and / or air conditioning (not shown in Figure 1). Of course, this type of rotary electric switch could be used in other types of facilities.

Dans son application aux véhicules automobiles, ce type de commutateur comprend un corps 1 monté à rotation autour d'un axe XX et solidaire dans une partie supérieure d'un organe de commande 3 faisant saillie hors de la partie supérieure d'un boítier de commande 4 par un orifice prévu dans le tableau de bord 5 du véhicule. L'organe de commande 3 est réalisé sous la forme d'un bouton rotatif propre à être entraíné en rotation par un passager-utilisateur logé dans l'habitacle du véhicule. Comme cela est illustré sur les figures 14 et 15, ce bouton rotatif 3 peut prendre plusieurs positions qui correspondent respectivement à des réglages prédéterminés d'une partie de l'installation. Ici, le commutateur électrique est plus particulièrement destiné à fixer le régime d'un pulseur (non représenté) du groupe moto-ventilateur de l'installation de chauffage et/ou climatisation du véhicule.In its application to motor vehicles, this type of switch comprises a body 1 rotatably mounted around a axis XX and integral in an upper part of an organ 3 protruding from the top a control box 4 through an orifice provided in the instrument panel 5 of the vehicle. The controller 3 is realized in the form of a rotary button suitable for being rotated by a passenger-user housed in the passenger compartment of the vehicle. As illustrated in the Figures 14 and 15, this rotary button 3 can take several positions which correspond respectively to settings part of the installation. Here, the electrical switch is more particularly intended for set the speed of a group blower (not shown) motor-fan of the heating installation and / or vehicle air conditioning.

Dans l'exemple illustré sur la figure 14, le bouton rotatif 3 peut prendre 4 positions matérialisées, par exemple sur le tableau de bord 5, par les chiffres 0 à 3, chaque position correspondant à des régimes du pulseur différents, et par conséquent à des débits d'air différents. En d'autres termes, à chaque position correspond une intensité de courant d'alimentation du pulseur qui est différente de la position voisine. La position 0 indique la position de "repos" (ou de mise hors de fonctionnement) du pulseur, et la position 3 celle dans laquelle le débit d'air traité est maximal. In the example illustrated in Figure 14, the rotary button 3 can take 4 materialized positions, for example on the dashboard 5, with the digits 0 to 3, each position corresponding to different fan modes, and by therefore at different air flow rates. In others terms, each position corresponds to an intensity of supply current of the blower which is different from the neighboring position. Position 0 indicates the position of "rest" (or deactivation) of the blower, and position 3 the one in which the treated air flow is maximum.

Contrairement au bouton rotatif illustré sur la figure 14, lequel ne permet d'assurer qu'une unique fonction (gestion du débit du flux d'air issu de l'extérieur du véhicule), le bouton rotatif 3 illustré sur la figure 15 permet d'assurer deux fonctions : gestion à la fois des débits d'air issus de l'extérieur du véhicule et de l'intérieur de l'habitacle (encore appelé air recirculé). Dans cet exemple, le bouton de commande, et par conséquent le commutateur électrique, peut prendre sept positions différentes, une position centrale correspondant à la mise hors de fonctionnement du pulseur, et deux fois trois positions latérales correspondant à trois régimes différents du pulseur, respectivement pour l'alimentation en air recirculé et en air extérieur.Unlike the rotary knob shown in Figure 14, which only ensures a single function (management the air flow from the outside of the vehicle), the rotary button 3 illustrated in FIG. 15 ensures two functions: management of both the air flows from the exterior of the vehicle and the interior of the passenger compartment (also called recirculated air). In this example, the button control, and therefore the electrical switch, can take seven different positions, one position central unit corresponding to the deactivation of the pulser, and twice three corresponding side positions at three different blower speeds, respectively for the supply of recirculated air and outside air.

Le corps 1 du commutateur rotatif supporte également, dans une partie inférieure 6, un curseur 7 (voir figure 3) réalisé dans un matériau conducteur électriquement.The body 1 of the rotary switch also supports, in a lower part 6, a slider 7 (see FIG. 3) made of an electrically conductive material.

Ce curseur 7 est destiné à établir des contacts électriques entre des pistes primaires 8-i et une piste secondaire d'alimentation 9, lesquelles pistes constituent un jeu de pistes (voir figure 2).This cursor 7 is intended to establish electrical contacts between primary 8-i tracks and a secondary track feed 9, which tracks constitute a set of tracks (see Figure 2).

Dans le mode de réalisation illustré sur les figures 1 à 5, les pistes primaires 8-i (ici i = 1 à 4) et la piste secondaire d'alimentation 9 sont coplanaires. Ces pistes sont réalisées dans un matériau conducteur électriquement, comme par exemple du cuivre, et sont maintenues, comme cela est mieux illustré sur les figures 2 et 5, les unes à côtés des autres par un support 10 formé dans un matériau isolant, comme par exemple une matière synthétique de type plastique.In the embodiment illustrated in FIGS. 1 to 5, the primary tracks 8-i (here i = 1 to 4) and the track secondary supply 9 are coplanar. These tracks are made of an electrically conductive material, such as copper, and are maintained like this is better illustrated in Figures 2 and 5, one next to the other others by a support 10 formed in an insulating material, such as for example a plastic-type synthetic material.

Dans cet exemple, les pistes primaires et secondaire sont réparties sur un secteur angulaire d'environ 180°. Mais elles pourraient s'étendre sur plus de 180°, voire sur 360°, selon les besoins. La piste secondaire d'alimentation 9 présente dans une partie centrale 11 une forme partiellement annulaire, destinée à entourer le corps 1 à une distance périphérique R1 de l'axe XX, et se termine en l'une de ses extrémités par une broche 12 permettant un raccordement à un connecteur (non représenté sur les figures).In this example, the primary and secondary tracks are distributed over an angular sector of approximately 180 °. But they could extend over 180 °, even 360 °, as required. The secondary feed track 9 has a partially shaped central part 11 annular, intended to surround the body 1 at a distance device R1 of axis XX, and ends in one of its ends by a pin 12 allowing connection to a connector (not shown in the figures).

Les pistes primaires 8-i sont placées au delà de la piste secondaire d'alimentation 9, à une distance périphérique R2 de l'axe XX (R2 > R1). Elles comprennent chacune une première partie partiellement annulaire qui se termine, comme la piste secondaire d'alimentation 9, par une seconde partie formant broche 13 destinée à être introduites dans le connecteur précité. Ces premières parties sont donc réparties dans une seconde zone annulaire qui entoure, dans cet exemple, la première zone annulaire 11.The primary tracks 8-i are placed beyond the track secondary supply 9, at a peripheral distance R2 of axis XX (R2> R1). They each include a first partially annular part which ends, like the secondary feed track 9, by a second part forming a pin 13 intended to be introduced into the aforementioned connector. These first parts are therefore distributed in a second annular zone which surrounds, in this example, the first annular zone 11.

La piste secondaire d'alimentation 9 est destinée à être raccordée, via le connecteur, à un générateur de courant ou de tension. Les pistes primaires 8-i sont indépendantes et électriquement isolées les unes des autres. Elles sont respectivement raccordées, toujours via le connecteur, à des résistances (non représentées) de valeurs différentes et faisant partie intégrante du circuit d'alimentation du moteur électrique du pulseur. Ainsi, selon la piste primaire 8-i qui est contactée par le curseur 7 en même temps que la piste secondaire 9, le courant qui alimente le moteur électrique du pulseur varie.The secondary feed track 9 is intended to be connected, via the connector, to a current generator or Of voltage. The primary 8-i tracks are independent and electrically isolated from each other. They are respectively connected, always via the connector, to resistors (not shown) of different values and forming an integral part of the supply circuit of the electric motor of the blower. So according to the primary track 8-i which is contacted by cursor 7 at the same time as the secondary track 9, the current which feeds the motor electric of the blower varies.

Pour permettre ce contact, le curseur 7 (voir figures 3 et 5) comprend des saillies 14-1 et 14-2 comprenant chacune une partie linéaire sensiblement radiale, prolongée, dans l'exemple illustré, par deux bras 16-a et 16-b, de forme générale circulaire, portant en leur extrémité un plot de contact 15 destiné à établir un contact électrique entre la saillie qui le porte et la piste contactée.To allow this contact, the cursor 7 (see Figures 3 and 5) includes projections 14-1 and 14-2 each comprising a linear part substantially radial, extended, in the example illustrated, by two arms 16-a and 16-b, of form general circular, carrying at their end a stud contact 15 intended to establish an electrical contact between the projection which carries it and the track contacted.

Dans l'exemple illustré, les bras 16 s'enroulent autour d'une portion annulaire 17 du curseur 7 reliant électriquement les deux saillies 14 entre elles.In the example illustrated, the arms 16 are wound around an annular portion 17 of the cursor 7 electrically connecting the two projections 14 between them.

Préférentiellement, le curseur 7 est tout d'abord prédécoupé dans un disque plan, de préférence métallique, de façon à former la portion circulaire 17, les saillies 14 et les bras 16. Puis, le curseur 7 est replié suivant un diamètre de la partie annulaire de sorte que les bras 16 de chaque saillie 14 soient répartis selon deux plans sensiblement parallèles entre eux et dits supérieur et inférieur.Preferably, the cursor 7 is first of all precut in a flat disc, preferably metallic, so that form the circular portion 17, the projections 14 and the arms 16. Then, the cursor 7 is folded along a diameter of the annular part so that the arms 16 of each projection 14 are distributed in two substantially parallel planes between them and called upper and lower.

De préférence, les plots de contact 15 sont réalisés par emboutissage de la partie terminale des bras, à l'aide d'un outil approprié. Un tel emboutissage peut être effectué après l'étape de découpe du curseur 7, et avant le pliage.Preferably, the contact pads 15 are produced by stamping of the terminal part of the arms, using a appropriate tool. Such stamping can be carried out after the step of cutting the cursor 7, and before folding.

Dans cet exemple, pour réduire l'encombrement au minimum, les deux saillies 14 sont sensiblement diamétralement opposées et leurs paires de bras s'enroulent, après repliement, selon deux directions opposées, l'une dans le sens horaire et l'autre dans le sens opposé (anti-horaire). Les plots de contact 15 se trouvent, par conséquent, tous regroupés dans une région de faible volume.In this example, to minimize clutter, the two projections 14 are substantially diametrically opposite and their pairs of arms roll up, after folding, in two opposite directions, one in the direction clockwise and the other counterclockwise. The contact pads 15 are found, therefore, all grouped in a region of low volume.

Grâce aux 4 plots de contact, portés dans cet exemple de réalisation par 4 bras, il est possible, lorsque le corps 1 est dans l'une de ses positions prédéterminées, d'établir des doubles contacts électriques à la fois sur la piste secondaire d'alimentation 9 et sur la piste primaire 8-i associée à la position dudit corps.Thanks to the 4 contact pads, worn in this example realization by 4 arms, it is possible, when the body 1 is in one of its predetermined positions, to establish double electrical contacts both on the track secondary supply 9 and on primary track 8-i associated with the position of said body.

Dans l'exemple illustré, la première saillie 14-1 est destinée à établir un double contact avec la piste secondaire d'alimentation 9, qui se trouve placée plus près de l'axe XX que ne le sont les pistes primaires 8-i. C'est la raison pour laquelle, dans cet exemple, les bras 16-a et 16-b que porte cette première saillie 14-1 présentent des dimensions (longueur et courbure) sensiblement identiques. Les bras 16 s'étendent ici sur un secteur angulaire d'environ 90°, et leurs plots de contact 15 se font donc sensiblement face.In the example illustrated, the first projection 14-1 is intended to establish a double contact with the secondary track supply 9, which is located closer to the axis XX than are the primary tracks 8-i. It's here reason why, in this example, arms 16-a and 16-b worn by this first projection 14-1 have substantially identical dimensions (length and curvature). The arms 16 extend here over an angular sector of approximately 90 °, and their contact pads 15 are therefore substantially face.

Pour permettre un contact élastique, les bras 16-a et 16-b présentent une courbure axiale obtenue, après l'étape de découpe, par pliage de leur embase 18 située à l'extrémité de la partie linéaire de la saillie 14 correspondante.To allow elastic contact, arms 16-a and 16-b have an axial curvature obtained after the step of cutting, by folding their base 18 located at the end of the linear part of the corresponding projection 14.

Lorsque le jeu de pistes, et plus précisément la piste secondaire 9 est introduite entre les deux bras 16-a et 16-b de la première saillie 14-1, leurs plots de contact 15 établissent donc chacun un contact électrique avec les faces supérieure et inférieure de cette piste, qui se trouve alors intercalée entre les plots.When the track game, and more precisely the track secondary 9 is introduced between the two arms 16-a and 16-b from the first projection 14-1, their contact pads 15 establish so each one an electrical contact with the faces upper and lower of this track, which then sits interposed between the studs.

Afin de réduire au maximum l'encombrement radial du curseur 7, le rayon de courbure des bras 16-a et 16-b de la première saillie 14-1 décroit de l'embase 18 vers la partie terminale opposée portant le plot de contact 15.To minimize the radial footprint of the cursor 7, the radius of curvature of the arms 16-a and 16-b of the first projection 14-1 decreases from base 18 towards the terminal part opposite bearing the contact pad 15.

Les deux bras 16-a et 16-b portés par la seconde saillie 14-2, sont réalisés selon le même principe que ceux portés par la première saillie 14-1. Dans cet exemple, ils ne présentent, cependant pas des longueurs identiques. Les plots de contact 15 portés par ces deux bras 16-a et 16-b ne sont donc pas superposés l'un au dessus de l'autre. Ils sont décalés angulairement d'une distance supérieure à la distance circonférentielle (ou tangentielle) séparant deux pistes voisines (primaires ou primaire et secondaire), et inférieure à l'extension circonférentielle des pistes primaires 8-i dans la seconde zone annulaire.The two arms 16-a and 16-b carried by the second projection 14-2, are made according to the same principle as those worn by the first projection 14-1. In this example, they only show, however not identical lengths. The studs of contact 15 carried by these two arms 16-a and 16-b are not therefore not superimposed one above the other. They are angularly offset by a distance greater than the circumferential (or tangential) distance between two neighboring tracks (primary or primary and secondary), and less than the circumferential extension of the tracks primary 8-i in the second annular zone.

Ainsi, les bras 16-a et 16-b de la seconde saillie 14-2 peuvent établir soit un double contact sur les faces supérieure et inférieure d'une piste primaire 8-i, soit deux mono-contacts sur la face supérieure d'une piste et la face inférieure de la piste voisine de manière à les court-circuiter sans interrompre l'alimentation du moteur. Dans ce dernier cas (court-circuit), le commutateur se trouve entre deux de ses positions prédéterminées, mais un courant électrique continue de circuler, ce qui permet d'éviter les arcs électriques en assurant la continuité de l'alimentation du moteur par un contact ponctuel. Thus, the arms 16-a and 16-b of the second projection 14-2 can establish either a double contact on the faces upper and lower of a primary track 8-i, i.e. two mono-contacts on the upper face of a track and the face lower of the neighboring track so as to short-circuit them without interrupting the power supply to the motor. In this last case (short circuit), the switch is between two of its predetermined positions but a current continues to circulate, which avoids electric arcs ensuring continuity of supply of the motor by a point contact.

Dans l'exemple illustré sur la figure 2, pour que le commutateur électrique soit dans une position "de repos" (ou de mise hors fonctionnement), il faut que les 4 plots portés par les deux saillies 14-1 et 14-2 soient en contact avec la piste secondaire d'alimentation 9. Aucune piste primaire 8-i n'est alors reliée électriquement à cette piste secondaire d'alimentation 9, et par conséquent le moteur électrique n'est pas alimenté en courant.In the example illustrated in Figure 2, so that the electrical switch either in a "rest" position (or of deactivation), it is necessary that the 4 studs carried by the two projections 14-1 and 14-2 are in contact with the secondary feed track 9. No primary track 8-i is then electrically connected to this secondary track 9, and therefore the electric motor is not supplied with current.

En revanche, pour que le moteur soit alimenté selon une intensité prédéterminée, il faut que les deux plots 15 portés par les deux bras de la première saillie 14-1 soient au contact de la piste secondaire d'alimentation 9, et que les deux plots 15 portés par les deux bras de la seconde saillie 14-2 soient au contact avec les faces supérieure et inférieure de l'une des pistes primaires 8-i.On the other hand, so that the motor is supplied with a predetermined intensity, it is necessary that the two pads 15 carried by the two arms of the first projection 14-1 are in contact with the secondary supply track 9, and that the two studs 15 carried by the two arms of the second projection 14-2 are in contact with the upper faces and lower of one of the primary tracks 8-i.

Pour permettre cette mise en position repos, les quatre plots 15 portés par les deux saillies 14 doivent être proches les uns des autres. C'est pourquoi, dans cet exemple, les bras portés par la seconde saillie 14-2 s'étendent sur un secteur angulaire d'environ 90°. Par ailleurs, pour que les bras de la seconde saillie 14-2 puissent s'enrouler autour des bras portés par la première saillie 14-1, leurs courbures respectives croissent de leur embase 18 vers leur partie terminale portant le plot de contact 15.To allow this setting in the rest position, the four studs 15 carried by the two projections 14 must be close to each other. This is why, in this example, the arms carried by the second projection 14-2 extend over an angular sector of approximately 90 °. Through elsewhere, so that the arms of the second projection 14-2 can wrap around the arms carried by the first protrusion 14-1, their respective curvatures grow with their base 18 towards their terminal part carrying the stud contact 15.

Lorsque le jeu de pistes est introduit entre les deux niveaux supérieur et inférieur de bras 16, les bras 16-a et 16-b de la seconde saillie 14-2 peuvent établir des contacts avec respectivement les faces supérieure et inférieure des pistes primaires 8, qui sont alors intercalées entre leurs plots respectifs.When the treasure hunt is introduced between the two upper and lower levels of arms 16, arms 16-a and 16-b of the second projection 14-2 can establish contacts with respectively the upper and lower faces of primary tracks 8, which are then inserted between their respective studs.

Bien entendu, les formes respectives des bras portés par les saillies dépendent de la forme choisie pour chacune des pistes du jeu de pistes. Il en va de même du positionnement des saillies radiales, lesquelles ne sont pas nécessairement positionnées de façon diamétralement opposées. Ainsi, on pourrait prévoir deux saillies radiales sensiblement superposées l'une au dessus de l'autre, et portant en des lieux espacés radialement, ou non, deux bras destinés à établir chacun un contact avec les faces supérieures ou inférieures des pistes secondaire d'alimentation 9 et primaire 8-i. De même, dans le cas de saillies diamétralement opposées, on peut envisager une variante dans laquelle les bras 16-a contenus sensiblement dans le plan supérieur soient conformés de façon à contacter la seule piste secondaire d'alimentation 9, tandis que les bras 16-b sensiblement contenu dans le plan inférieur soient conformés de façon à établir des contacts avec les seules pistes primaires 8-i (en dehors de la position repos). De nombreuses autres variantes encore peuvent être envisagées.Of course, the respective shapes of the arms carried by the protrusions depend on the shape chosen for each of the tracks of the treasure hunt. The same goes for positioning radial projections, which are not necessarily positioned diametrically opposite. So, we could provide two substantially protruding radial projections superimposed one above the other, and bearing in places spaced radially, or not, two arms intended to each establish contact with the upper faces or lower secondary feed tracks 9 and primary 8-i. Similarly, in the case of diametrically protruding opposite, we can consider a variant in which the arms 16-a contained substantially in the upper plane conform to contact the single track secondary feed 9, while arms 16-b substantially contained in the lower plane are shaped so as to establish contacts with the only tracks primary 8-i (outside the rest position). Many still other variants can be envisaged.

L'immobilisation du curseur 7 sur le corps 1 du commutateur s'effectue dans une partie inférieure 6 de celui-ci grâce à des moyens d'immobilisation, de type saillie 19 (voir figure 4) destinés à coopérer avec des encoches formées sur ledit curseur 7, par exemple au niveau de ses saillies radiales 14-1 et 14-2.Immobilization of the cursor 7 on the body 1 of the switch takes place in a lower part 6 of it thanks to immobilization means, of the protruding type 19 (see figure 4) intended to cooperate with notches formed on said cursor 7, for example at its radial projections 14-1 and 14-2.

En raison de son architecture particulière, un commutateur selon l'invention peut également intégrer des pistes tertiaires appartenant à des circuits d'alimentation électrique ou d'autres éléments du véhicule, comme par exemple l'éclairage. Une telle variante est illustrée sur la figure 6. Les pistes tertiaires 20-1 à 20-5 sont ici maintenues par le support 10 dans un plan sensiblement parallèle à celui des pistes primaires 8-i et secondaire 9.Due to its particular architecture, a switch according to the invention can also integrate tracks services belonging to supply circuits or other parts of the vehicle, such as example lighting. Such a variant is illustrated on the figure 6. Tertiary tracks 20-1 to 20-5 are here held by the support 10 in a plane substantially parallel to that of the primary 8-i and secondary 9 tracks.

On se réfère maintenant plus particulièrement aux figures 7 à 13 pour décrire un second mode de réalisation de l'invention, dit bi-nappe.We now refer more particularly to FIGS. 7 to 13 to describe a second embodiment of the invention, says bi-tablecloth.

Dans ce second mode de réalisation, dans le but de réduire l'encombrement radial, la piste secondaire d'alimentation 9 n'est plus localisée dans le même plan que les pistes primaires 8-i. Comme cela est plus particulièrement illustré sur la figure 8A, la piste secondaire d'alimentation se trouve désormais placée en dessous (ou au dessus) des pistes primaires 8-1 à 8-4. Ces deux types de pistes sont par conséquent maintenues les unes à côté des autres, et l'une au dessus ou au dessous des autres par le support 10, d'où l'appellation de "bi-nappe".In this second embodiment, in order to reduce the radial size, the secondary supply track 9 is no longer located in the same plane as the slopes primary 8-i. As is more particularly illustrated in FIG. 8A, the secondary feed track is now found below (or above) the slopes primary 8-1 to 8-4. These two types of tracks are by therefore kept side by side, and one above or below the others by the support 10, whence the designation "bi-tablecloth".

Dans ce mode de réalisation, contrairement au premier mode de réalisation décrit ci-avant, les parties annulaires des pistes primaires 8-i et de la piste secondaire d'alimentation 9 se recouvrent sensiblement, de préférence. Mais il pourrait en être autrement dans des variantes.In this embodiment, unlike the first mode described above, the annular parts of the 8-i primary tracks and the secondary feed track 9 preferably overlap substantially. But he could be otherwise in variants.

Ainsi, à l'aide des plots 15 portés par les bras 16-a des deux saillies 14-1 et 14-2, qui sont sensiblement contenus dans l'un des deux plans, ici le plan supérieur, on contacte les seules pistes primaires 8-i, tandis qu'avec les plots de contact 15 portées par les bras 16-b contenus sensiblement dans le plan inférieur, on contacte la seule piste secondaire d'alimentation 9.Thus, using the studs 15 carried by the arms 16-has two projections 14-1 and 14-2, which are substantially contained in one of the two planes, here the upper plane, we contact the only primary tracks 8-i, while with the pads of contact 15 carried by the arms 16-b contained substantially in the lower plane, we contact the only secondary track supply 9.

Dans ce second mode de réalisation, deux variantes peuvent être envisagées, selon que les bras 16-a et 16-b des saillies radiales 14 se trouvent placés entre les pistes primaires 8-i et la piste secondaire d'alimentation 9, ou bien que ces mêmes bras encadrent les pistes primaires et la piste secondaire d'alimentation.In this second embodiment, two variants can be considered, depending on whether arms 16-a and 16-b of radial projections 14 are located between the tracks primary 8-i and the secondary feed track 9, or although these same arms frame the primary tracks and the secondary feed track.

Il est bien évident que le sens de la courbure axiale d'un bras et la face sur laquelle est formé le plot de contact porté par ce bras vont dépendre de la variante choisie, afin que lesdits plots de contact 15 qu'ils portent respectivement puissent établir un contact élastique efficace avec les faces supérieures ou inférieures des pistes du jeu de piste. Un exemple de réalisation d'un curseur propre à établir des contacts, dans une position intercalée, avec le jeu de pistes de la figure 8A est illustré sur la figure 8B. It is quite obvious that the direction of the axial curvature of a arm and the face on which the contact pad is formed carried by this arm will depend on the variant chosen, so that said contact pads 15 which they respectively carry can establish an effective elastic contact with the upper or lower faces of the treasure hunt tracks. An example of making a cursor suitable for establishing contacts, in an interposed position, with the set of Figure 8A tracks is illustrated in Figure 8B.

Dans ce second mode de réalisation, afin d'obtenir la position de repos (ou de mise hors de fonctionnement) du pulseur), qui correspond à une situation dans laquelle les quatre plots de contact 15 sont reliés à la piste d'alimentation secondaire 9, il est avantageux que l'une des pistes, par exemple celle référencée 8-1, soit reliée électriquement à la piste d'alimentation 9, les autres pistes primaires 8-2 à 8-4 restant indépendantes de cette piste secondaire d'alimentation de manière à offrir trois régimes différents.In this second embodiment, in order to obtain the rest (or deactivation) position of the pulser), which corresponds to a situation in which the four contact pads 15 are connected to the supply track secondary 9, it is advantageous that one of the tracks, for example that referenced 8-1, is electrically connected at feed track 9, the other primary tracks 8-2 8-4 remaining independent of this secondary track diet so as to offer three different diets.

Tout comme cela a été illustré en référence à la figure 6, ce second mode de réalisation permet l'intégration dans le commutateur de pistes tertiaires 20. Ces pistes tertiaires peuvent être placées dans le plan contenant la piste secondaire d'alimentation 9, comme illustré sur la figure 12. Mais, on peut prévoir également des pistes tertiaires dans le même plan que les pistes primaires 8-i.Just as illustrated with reference to Figure 6, this second embodiment allows integration into the tertiary tracks switch 20. These tertiary tracks can be placed in the plane containing the track secondary supply 9, as illustrated in the figure 12. But, we can also provide tertiary tracks in the same plane as the primary tracks 8-i.

Il est bien évident, que le support de pistes 10 sera adapté en fonction du nombre de pistes primaires, secondaire et tertiaires, et de leurs formes respectives.It is obvious that the track support 10 will be adapted depending on the number of primary, secondary and tertiary, and their respective forms.

Tout comme dans le premier mode de réalisation, les formes des bras pourront varier selon les formes des pistes primaires 8-i et de la piste secondaire d'alimentation 9.Just as in the first embodiment, the shapes arms may vary according to the shape of the tracks primary 8-i and secondary feed track 9.

Le jeu de pistes illustré sur la figure 8A est plus particulièrement adapté à la gestion d'une unique fonction, comme par exemple celle du débit d'air extérieur traité par le pulseur. Pour utiliser le commutateur selon l'invention en mode bi-fonction, comme illustré sur la figure 15, il est nécessaire d'adapter les pistes primaires 8-i de la figure 8A. Une telle adaptation est illustrée sur la figure 11. Les pistes primaires 8-i sont désormais réparties sur sensiblement 360°. La piste 8-1 correspond sensiblement à la position 0 illustrée sur la figure 15, tandis que les pistes 8-2 à 8-4 correspondent aux positions 1 à 3 de chaque fonction. A cet effet, ces pistes 8-2 à 8-4 comprennent deux parties connectées électriquement, dé sorte que le contact de l'une ou l'autre partie d'une piste assure la même alimentation en courant au niveau du moteur électrique. Préférentiellement, pour permettre la commutation d'une fonction à l'autre, comme par exemple la commutation du traitement d'air recirculé vers le traitement d'air extérieur, le corps du commutateur est couplé mécaniquement à un chemin de came qui gère la position d'un ou de plusieurs volets d'entrée d'air.The track set illustrated in FIG. 8A is more particularly suitable for managing a single function, such as for example that of the outside air flow treated by the kicker. To use the switch according to the invention in bi-function mode, as illustrated in figure 15, it is necessary to adapt the primary tracks 8-i of the figure 8A. Such an adaptation is illustrated in Figure 11. The primary tracks 8-i are now spread over substantially 360 °. Runway 8-1 corresponds substantially to the position 0 illustrated in FIG. 15, while the tracks 8-2 to 8-4 correspond to positions 1 to 3 of each function. For this purpose, these tracks 8-2 to 8-4 include two electrically connected parts, so that the contact of either part of a track ensures the same power supply at the electric motor. Preferably, to allow the switching of a function to another, such as switching the treatment of recirculated air to the treatment of outside air, the switch body is mechanically coupled to a cam path that manages the position of one or more air intake shutters.

L'invention se limite pas aux modes de réalisation décrits ci-avant, mais elle englobe toute les variantes que pourra développer l'homme de l'art dans le cadre des revendications ci-après.The invention is not limited to the embodiments described above, but it includes all the variants that may develop a person skilled in the art within the framework of the claims below.

Ainsi, on a décrit un curseur portant quatre plots de contact, mais il est clair que ce curseur peut ne porter que trois plots de contact, pourvu que deux d'entre eux soient destinés à établir un double contact sur les pistes primaires dans les positions prédéterminées du commutateur, tandis que le troisième contacte la piste secondaire d'alimentation.Thus, we have described a cursor carrying four plots of contact, but it is clear that this cursor can only carry three contact pads, provided that two of them are intended to establish a double contact on the primary tracks in the predetermined switch positions, while the third contacts the secondary feed track.

Par ailleurs, on a décrit des modes de réalisation dans lesquels, du fait de l'agencement des pistes primaires et de la piste secondaire d'alimentation, les plots de contact étaient tous regroupés en une même région. Mais il est clair, que l'on peut envisager des variantes dans lesquelles les plots de contact sont éloignés.Furthermore, embodiments have been described in which, due to the arrangement of the primary tracks and the secondary supply track, the contact pads were all grouped together in the same region. But he is clear, that we can consider variants in which the contact pads are far apart.

Claims (27)

  1. Electric switch for control panel, in particular of a motor vehicle heating, ventilating and/or air conditioning device, of the type comprising a set of electrically conducting tracks of chosen individual geometries, the said set comprising a plurality of substantially coplanar primary tracks (8-i) and a secondary supply track (9), and a body (1) mounted rotatably about an axis (XX) perpendicular to the planes of the primary tracks and of the secondary track and radially supporting at least two conducting projections (14-1, 14-2) interconnected electrically, carrying at least three contact pads (15), in certain predetermined positions of the said body (1) two of the said pads (15) out of the three are angularly spaced and contact one at least of the said primary tracks (8-i), the tangential distance, corresponding to the angular gap between these two pads, being greater than the tangential distance between two neighbouring tracks and less than the tangential dimension of each primary track, while the third pad (15) contacts the second track (9), characterized in that the projections (14) are fashioned in such a way that two of the said pads (15) out of the three establish contact in a first plane while the third pad (15) establishes contact in a second plane different from the first plane.
  2. Switch according to Claim 1, characterized in that the primary tracks (8-i) and the secondary track (9) are substantially coplanar and define substantially via upper and lower faces respectively the said first and second planes.
  3. Switch according to Claim 1, characterized in that the primary tracks (8-i) and the secondary track (9) are placed respectively in two substantially parallel planes and define respectively via their mutually overlooking or mutually opposite faces the said first and second planes.
  4. Switch according to one of Claims 1 to 3, characterized in that it comprises two projections (14-1, 14-2), one at least of which carries two contact pads (15) out of the three.
  5. Switch according to one of Claims 1 to 4, characterized in that the projections (14) carry a fourth contact pad (15) able to establish a second contact with the said secondary track (9).
  6. Switch according to Claim 5, characterized in that it comprises two projections (14) each carrying two contact pads (15).
  7. Switch according to one of Claims 4 to 6, characterized in that the two projections (14-1, 14-2) are at least partially placed in planes respectively parallel to the first and second planes.
  8. Switch according to Claim 6, characterized in that the two projections (14-1, 14-2) are positioned in a diametrically opposite manner and each comprise at the end of their radial part a first (16-a) and a second (16-b) curved arm winding around the periphery of the body (1) in one and the same direction and placed substantially in planes parallel to the first and second planes.
  9. Switch according to Claim 8, characterized in that the first (16-a) and second (16-b) arms of the projections (14) are placed respectively in planes substantially parallel to the first and second planes.
  10. Switch according to Claim 8, characterized in that the first arms (16-a) of the projections (14) are placed respectively in different planes substantially parallel to the first and second planes, and the second arms (16-b) of the projections (14) are placed respectively in different planes substantially parallel to the second and first planes.
  11. Switch according to one of Claims 8 to 10, characterized in that the first (16-a) and second (16-b) arms of the opposite projections (14-1, 14-2) wind in opposite directions.
  12. Switch according to Claim 11, characterized in that the first (16-a) and second (16-b) curved arms of each projection (14) wind while exhibiting one and the same radius of curvature.
  13. Switch according to Claim 12, characterized in that the radius of curvature of the first (16-a) and second (16-b) arms of a first projection (14-1) decreases from their base (18) towards an extremal part of them, which part comprises a contact pad (15), and in that the radius of curvature of the first (16-a) and second (16-b) arms of the second projection (14-2) increases from their base (18) towards an extremal part of them, which part comprises a contact pad (15).
  14. Switch according to Claim 11, characterized in that the first (16-a) and second (16-b) curved arms of each projection (14) wind while exhibiting a radius of curvature increasing, respectively decreasing, from their base (18) towards an extremal part of the arm, which part comprises a contact pad (15).
  15. Switch according to one of Claims 8 to 14, characterized in that the first (16-a) and second (16-b) arms are of substantially identical length.
  16. Switch according to one of Claims 8 to 14, characterized in that at least one of the projections (14-2) comprises arms (16-a, 16-b) of different lengths, so that their respective pads are angularly offset.
  17. Switch according to one of Claims 8 to 16, characterized in that the arms (16-a, 16-b) exhibit a substantially axial curvature achieved by bending of their base (18), each arm exhibiting an extremal part that is axially closer to a track (8-i) than is its base to this same track, thereby making it possible to ensure elastic contact between a track (8, 9) and a projection (14) by way of a contact point (15).
  18. Switch according to one of Claims 1 to 17, characterized in that the said primary tracks (8-i) and secondary track (9) are respectively distributed substantially in first and second annular zones situated at the periphery of the body (1).
  19. Switch according to Claim 18, characterized in that the first and second annular zones are situated at the periphery of the body (1) at distances chosen in such a way that they do not overlap.
  20. Switch according to Claim 19, characterized in that the radial distance between the said first and second zones is less than the radial distance separating the pads (15) establishing contacts in one and the same plane.
  21. Switch according to one of the preceding claims, characterized in that the set of primary tracks (8-i) and secondary track (9) is connected to an electric motor of the installation.
  22. Switch according to Claim 21, characterized in that the track set furthermore comprises at chosen locations tertiary tracks (20-i) of circuits for controlling vehicle members other than the said electric motor of the installation.
  23. Switch according to Claim 22 in combination with Claim 3, characterized in that the tertiary tracks (20-i) are coplanar with the secondary track (9).
  24. Switch according to one of Claims 21 to 23, characterized in that the electric motor governs the speed of a blower of the installation, and in that it is coupled to a mechanism suitable for allowing the switching of the air supply to the said blower from a so-called exterior mode to a so-called recirculated mode.
  25. Switch according to Claim 24, characterized in that at least one of the primary tracks (8-i) is subdivided into two electrically connected parts suitable for being used respectively in the two modes, exterior and recirculated.
  26. Switch according to one of Claims 18 to 25, characterized in that the primary tracks (8-i) and secondary track (9) of the set are distributed over an angular sector of greater than 180°.
  27. Switch according to one of Claims 1 to 26, characterized in that the projections (14) are radial extensions of an annulus (7) bent back so as to form two superimposed half-annuli (17) and comprising means for allowing immobilization thereof on the said body, the said annulus and its extensions being made by pre-cutting from a plane disc, preferably a metal disc.
EP98401487A 1997-06-20 1998-06-17 Low profile switch for control panel, in particular for car heating, ventilation and/or climatisation devices Expired - Lifetime EP0886292B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9707717A FR2765030B1 (en) 1997-06-20 1997-06-20 LOW-SIZE ELECTRICAL SWITCH FOR A CONTROL PANEL, PARTICULARLY FOR A HEATING, VENTILATION AND / OR AIR CONDITIONING SYSTEM OF A MOTOR VEHICLE
FR9707717 1997-06-20

Publications (2)

Publication Number Publication Date
EP0886292A1 EP0886292A1 (en) 1998-12-23
EP0886292B1 true EP0886292B1 (en) 2004-05-19

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP98401487A Expired - Lifetime EP0886292B1 (en) 1997-06-20 1998-06-17 Low profile switch for control panel, in particular for car heating, ventilation and/or climatisation devices

Country Status (5)

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US (1) US5969307A (en)
EP (1) EP0886292B1 (en)
DE (1) DE69823918T2 (en)
ES (1) ES2221131T3 (en)
FR (1) FR2765030B1 (en)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
WO2024023408A1 (en) * 2022-07-26 2024-02-01 Safran Aircraft Engines Blade de-icing device

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Publication number Priority date Publication date Assignee Title
ES2185489B1 (en) * 2001-06-18 2004-01-16 Valeo Sist Seguridad Y Cierre LOW CURRENT START SWITCH FOR VEHICLES, AND STARTING EQUIPMENT EQUIPPED WITH SUCH SWITCH.
FI123561B (en) 2011-06-07 2013-07-15 Abb Oy Switch
CN104064390A (en) * 2014-06-19 2014-09-24 仲炳华 Knob-type multi-path progressive switch

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US3238319A (en) * 1961-09-13 1966-03-01 American Mach & Foundry Switch with axially spaced angularly offset rotary wiper contacts
GB1215932A (en) * 1967-03-15 1970-12-16 Plessey Co Ltd Improvements relating to electric switches
DE1964580C2 (en) * 1969-12-23 1971-11-04 Ebe Elektro Bau Elemente Gmbh CONTACT BRIDGE ARRANGEMENT
DE2146237C3 (en) * 1971-09-16 1975-12-18 Blaupunkt-Werke Gmbh, 3200 Hildesheim Program switch for electrical devices
PL71892B1 (en) * 1972-10-02 1974-06-29
US4401862A (en) * 1981-05-29 1983-08-30 Bernard Valentin Electrical switch with sliding contacts
JPS5946428U (en) * 1982-09-21 1984-03-28 アルプス電気株式会社 rotary switch
US5290980A (en) * 1992-07-08 1994-03-01 Indak Manufacturing Corp. Rotary vacuum-electric switch
US5577605A (en) * 1995-05-15 1996-11-26 Eaton Corporation Rotary switch
FR2738665B1 (en) * 1995-09-08 1997-10-17 Valeo Electronique ELECTRIC SWITCH FOR A CONTROL PANEL, IN PARTICULAR FOR A HEATING, VENTILATION AND / OR AIR CONDITIONING DEVICE OF A MOTOR VEHICLE

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024023408A1 (en) * 2022-07-26 2024-02-01 Safran Aircraft Engines Blade de-icing device
FR3138467A1 (en) * 2022-07-26 2024-02-02 Safran Aircraft Engines Vane defrosting device

Also Published As

Publication number Publication date
FR2765030A1 (en) 1998-12-24
DE69823918D1 (en) 2004-06-24
ES2221131T3 (en) 2004-12-16
US5969307A (en) 1999-10-19
EP0886292A1 (en) 1998-12-23
FR2765030B1 (en) 1999-08-27
DE69823918T2 (en) 2005-06-09

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