EP0088014A1 - Electric rotary switch - Google Patents

Electric rotary switch Download PDF

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Publication number
EP0088014A1
EP0088014A1 EP83400373A EP83400373A EP0088014A1 EP 0088014 A1 EP0088014 A1 EP 0088014A1 EP 83400373 A EP83400373 A EP 83400373A EP 83400373 A EP83400373 A EP 83400373A EP 0088014 A1 EP0088014 A1 EP 0088014A1
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EP
European Patent Office
Prior art keywords
stators
rotor
stator
contact
rotation
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EP83400373A
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German (de)
French (fr)
Inventor
Marcel Henri Deltoer
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Individual
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Individual
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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
    • H01H19/64—Encased switches adapted for ganged operation when assembled in a line with identical switches, e.g. stacked switches
    • 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

Definitions

  • the present invention relates to rotary switches and more precisely those of the type which comprises a rotor and annular stators substantially concentric to the axis of rotation of the rotor and provided with fixed contact pads, pads of two stators being mutually aligned in parallel direction to the axis of rotation, and the rotor of which is provided with contact blades which it resiliently supports and which are intended to successively connect aligned pads of two stators during the rotation of the rotor. All the studs of the same stator are substantially at the same radial distance from the axis of rotation.
  • rotary switches of the aforementioned type all the pads of each stator are connected to the same terminal or on the contrary different pads are connected, in groups or separately, to different terminals. Depending on the position of the rotor around its axis of rotation, the blades ensure the connection of aligned pads of stators.
  • the rotor usually comprises several contact strips and these, for certain positions of the rotor, may be in contact only with a stud of a single stator or even with no stud.
  • French Patent No. 1,398,866 describes such a rotary switch in which the rotor carrying the contact blades rotates in a housing delimited between two stator rings.
  • Rotary switches of the aforementioned type allow great flexibility in the control of devices and in particular they allow the implementation of numerous combinations of signals according to very diverse Boolean algebra functions.
  • switches are made in as small a form as possible so that they can be mounted in electrical devices with as little space as possible. Switches are therefore used, the diameter of which is approximately 25 mm and the rotor of which has 10 or 12 rotational positions, therefore 10 or 12 possibilities of alignment of pairs of stator pads.
  • the invention relates to a rotary switch of the type described above but which makes it possible to obtain a greater number of signal combinations, therefore a greater number of algebraic Boolean functions, by association of at least three stators with a single rotor.
  • the realization of such a switch poses complex problems. Indeed, it is possible to envisage using two sets of strips, one intended to ensure the connection of the pads of the central stator and of an external stator and the other the connection of the pads of the central stator and of the other stator external. This arrangement then requires a double rotor and has all the disadvantages of stacking two separate rotary switches, with a lower capacity, however.
  • the rotary switch has only one rotor, carrying a single series of blades.
  • the rotary switch according to the invention comprises a rotor and annular stators substantially concentric with the axis of rotation and provided with contact pads aligned mutually in direction parallel to the axis of rotation, so that the contact strips resiliently supported by the rotor can successively connect the aligned pads of the stators during the rotation of the rotor, all the pads of the same stator being substantially at the same distance radial of the axis of rotation.
  • the switch comprises three annular stators, and the rotor comprises only one series of contact strips placed at its periphery, this series comprising on the one hand at least one strip whose axial dimension is sufficiently small to that it can only connect the pads of two adjacent stators, and on the other hand at least one strip whose axial dimension is large enough so that it can connect the pads of two non-adjacent stators.
  • lamellae whose axial dimension is sufficiently large can come elastically into contact with a stud of the stator placed between the other two when one of these two other stators has no stud and the someone else has one.
  • the switch has abutment surfaces intended to prevent the lamellae whose axial dimension is sufficiently large from being able to come elastically into contact with a stator pad disposed between the two others, when one of these two other stators have no stud while the other has one.
  • the abutment surfaces are advantageously formed on the one hand on at least one strip and on the other hand on abutment rings arranged on either side of the rotor. These stop rings are advantageously formed from a material having a low coefficient of friction so that the rotor easily turns in contact with them.
  • the studs of at least one of the stators other than the central stator are closer to the axis of rotation than the studs of the central stator.
  • the stators have studs which are all practically at the same radial distance from the axis, and the lamellae whose axial dimension is sufficiently large have an inwardly curved shape so that they can be in contact with the two external stators without being in contact with the central stator.
  • Each stator advantageously includes a crown of plastic material supporting the studs, and the rings are stackable, two of the rings defining a housing intended to contain the stop rings and the peripheral part of the rotor.
  • the stators prefferably form crowns stackable on top of each other and comprising positioning devices, a suitable holding device retaining the crowns forming the stators in their stacked arrangement.
  • the rotary switch according to the invention can also include a larger number of stators, the studs of which can be connected by strips carried by a single rotor having a single series of strips whose axial dimensions are different.
  • the rotary switch 10 comprises a stack of elements, one of which extends beyond a control axis 12 carrying a maneuvering button 14.
  • the stack of elements successively comprises a first substantially cylindrical body 16 intended to contain the latching mechanism intended to maintain the rotor in its various positions, a first stator 18, a second stator 20, a third stator 22 and a cover 24 .
  • This last is fixed to the third stator 22 by studs 26 integral with the third stator 22 and crushed on its surface.
  • Plugs 28 constituting connection terminals protrude from the cover 24 by holes formed therein.
  • grooves 32 can optionally be formed at the periphery of the stack so that they facilitate installation in certain devices.
  • the configuration of the switch in FIG. 1 is very similar to that of a conventional switch, but it essentially differs therefrom by the presence of the third stator ring 22.
  • the main characteristics of the invention are not shown in Figure 1 because they are hidden inside the switch.
  • FIGS. 2 and 3 better represent the details of a rotary switch according to the invention.
  • the mechanism for locking and controlling the rotor is of a known type.
  • the cylindrical body 16 having at its periphery a rounded groove part 32 and grooves of rectangular section 34 for housing the claws 30, has a substantially continuous planar part pierced with a central hole 36 intended for the passage of the axis 12.
  • a cavity is formed inside the body 16 and it is delimited by a wall comprising several protrusions 38 in an arc of a circle separated by cavities 40. The number of cavities and protrusions is even so that two pins 42 of positioning, diametrically aligned with respect to a rotor actuating member 44, are located simultaneously in two diametrically opposite cavities 40 of the body 16 of the latching device.
  • the pins 42 are housed in radial holes of the member 44 and are pushed outwardly by springs 46, in a conventional manner.
  • the actuating member 44 also has a projection 48 having radial arms which protrude therefrom and which are intended to drive the rotor in rotation.
  • the body 16 is provided with positioning lugs 50 which protrude in the axial direction.
  • the first stator 18 comprises a body of cylindrical shape, having the configuration of a crown, carrying a contact 52 which is connected to an internal ring 54 which is continuous, in the case of this stator. All the contact strips, described later, are permanently in contact with this conductive ring 54 which is equivalent to a group of pads in maximum number, ten in the case considered since the latching device 16 determines ten different positions of the rotor.
  • the studs separated from the crown 54 have the disadvantage, compared to a continuous crown, of causing increased wear at the edges. The formation of such a continuous ring on the contrary allows continuous contact so that wear is reduced.
  • This crown is however equivalent to studs for the definition of the invention.
  • the body has a cylindrical cavity 56 turned on the side opposite to the latching device 16. This cavity is intended to partially house the rotor, itself described in more detail in the remainder of this specification.
  • the next stator ring which bears the reference 20 also has a similar cavity 58 but turned towards the latching device so that the two cavities 56 and 58 form a housing.
  • the stator 20 has several pads 60 which are connected in groups. A first group of pads is electrically powered by a first plug 62, a second group by a second plug 64 and a third group by a third plug 66. This can be extended as shown in dashed lines in FIG. 2, by a arm 68 intended to be folded above the stator 22 but below the cover 24 so that its end has a determined position, as indicated in broken lines in FIG. 1.
  • the third stator 22 is also provided of a molded body having a contact plug 70 connected to studs 72 which project inwards.
  • this third stator 22 has only one group of studs 72, but these are reduced in number, five in the example considered.
  • Positioning lugs 74 are intended to penetrate holes 76 of the first stator 18 and holes 78 of the third stator 22 and 80 of the cover 24. The ends of the lugs form the projections 26 which retain the cover 24 on the other elements.
  • the latching device 16, the three stators 18, 20 and 22 and the cover 24 are therefore stacked in contact with each other, in a position determined in rotation given the cooperation of the positioning pins and their housing holes. They thus form a fixed assembly which extends beyond the contact terminals 28 and the rotary axis 12 and they delimit an internal cavity intended to house the rotor, described hereinafter in this specification.
  • the rotor 80 has a flat cylindrical shape of which protrudes from a flange 82. This is intended to be housed in the cavity 56, 58 formed by the stators 18, 20, with two stop rings 84, 86 which facilitate the sliding of the flange 82 in the stators.
  • the stator On each side, the stator has a cavity 88, 90 delimited by projections and which is complementary to the projection 48 carried by the operating member 44. The cavity 88 is intended to cooperate with the projection 40 of the operating member while the projection 90, turned on the other side, allows the mounting of a connecting element of another switch, mounted on the switch shown after removal of the cover 24, if necessary.
  • the rotor body 80 has cavities 92, directed radially and each intended to contain an assembly 94 with lamella.
  • Each assembly 94 first comprises a guide member which comprises a first bar 96 intended to penetrate a slot in each housing 92 of the rotor 80 and a second bar 98 which projects laterally and which is intended to support a strip.
  • This bar 98 ends with an end 100 whose shape allows the introduction of the associated contact strip while retaining it so that it cannot come out.
  • the strip 102 itself comprises a body ending in two contact parts 106 which have a rounded shape and the body is surrounded by two cheeks 108 folded in on either side and ending in a foot 110.
  • each strip 102 has a central hole through which the bar 98 of the guide member passes.
  • the contact parts 106 are intended to come against studs such as 54, 60, 72 and the cheeks 108 are intended to limit the movement of each strip 102 towards the outside, by contact of these cheeks 108 with the rings 84, 86 stop.
  • a spring 104 normally pushes each lamella 102 toward the stop rings. In this way, the contact parts 106 tend to come against the studs.
  • Figure 3 clearly shows the main features of the invention.
  • a strip has a relatively short axial dimension so that, as shown, it can be in contact with studs 54, 60 of the first and second stator 18, 20. However, it is too short for come into contact with the pads 72 of the third stator 22.
  • the strip shown 102 has a larger axial dimension so that it can be simultaneously in contact with a pad 54 of the first stator 18 and a pad 72 of the third stator 22, without being in contact with a pad 60 of the second stator 20.
  • the pad 72 was removed, the lower contact part does not could not come against the stud 60 of the second stator 20 because the cheek 108 would then come into contact with the stop ring 86, in the circled part 112.
  • the shape of the cheeks 108 allows the contact of the strip 102 with a stud 60 of the intermediate stator 20. In this way, the number of combinations which can be obtained with the rotary switch is notably increased.
  • the invention also applies to switches comprising a larger number of stators.
  • an additional stator can be mounted between the latching device 16 and the first stator 18. Its arrangement is then completely similar to that of the third stator 22, but it is reversed with respect to the latter.
  • the blades can ensure contact between two adjacent stators only, between two stators separated by a third stator or between the most distant stators.

Landscapes

  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)

Abstract

The invention relates to a switch in which contact strips 102 carried by a single rotor can provide the connection between the pins 54 of a first stator and the pins 60 of a second stator or the pins 72 of a third stator. The number of combinations of connections which can be made is very large. Application to the construction of rotary switches. <IMAGE>

Description

La présente invention concerne les commutateurs rotatifs et plus précisément ceux du type qui comprend un rotor et des stators annulaires sensiblement concentriques à l'axe de rotation du rotor et munis de plots fixes de contact, des plots de deux stators étant alignés mutuellement en direction parallèle à l'axe de rotation,et dont le rotor est muni de lamelles de contact qu'il supporte élastiquement et qui sont destinées à relier successivement des plots alignés de deux stators lors de la rotation du rotor. Tous les plots d'un même stator sont sensiblement à la même distance radiale de l'axe de rotation.The present invention relates to rotary switches and more precisely those of the type which comprises a rotor and annular stators substantially concentric to the axis of rotation of the rotor and provided with fixed contact pads, pads of two stators being mutually aligned in parallel direction to the axis of rotation, and the rotor of which is provided with contact blades which it resiliently supports and which are intended to successively connect aligned pads of two stators during the rotation of the rotor. All the studs of the same stator are substantially at the same radial distance from the axis of rotation.

Dans les commutateurs rotatifs du type précité, tous les plots de chaque stator sont reliés à une même borne ou au contraire des plots différents sont reliés, par groupes ou séparément, à des bornes différentes. Selon la position du rotor autour de son axe de rotation, les lamelles assurent la connexion de plots alignés de stators. Le rotor comporte habituellement plusieurs lamelles de contact et celles-ci, pour certaines positions du rotor, peuvent n'être en contact qu'avec un plot d'un seul stator ou même avec aucun plot.In rotary switches of the aforementioned type, all the pads of each stator are connected to the same terminal or on the contrary different pads are connected, in groups or separately, to different terminals. Depending on the position of the rotor around its axis of rotation, the blades ensure the connection of aligned pads of stators. The rotor usually comprises several contact strips and these, for certain positions of the rotor, may be in contact only with a stud of a single stator or even with no stud.

Le brevet français n° 1 398 866 décrit un tel commutateur rotatif dans lequel le rotor portant les lamelles de contact tourne dans un logement délimité entre deux anneaux de stator.French Patent No. 1,398,866 describes such a rotary switch in which the rotor carrying the contact blades rotates in a housing delimited between two stator rings.

L'avantage de ces commutateurs rotatifs est qu'ils permettent l'obtention de combinaisons très diverses de signaux, par variation du nombre de lamelles de contact portées par le rotor, du nombre de groupes de plots de contact ayant des liaisons électriques séparées, et du nombre total de plots de contact de chaque stator.The advantage of these rotary switches is that they make it possible to obtain very diverse combinations of signals, by varying the number of contact strips carried by the rotor, the number of groups of contact pads having separate electrical connections, and of the total number of contact pads of each stator.

Les commutateurs rotatifs du type précité permettent une grande souplesse dans la commande d'appareils et en particulier ils permettent la mise en oeuvre de nombreuses combinaisons de signaux suivant des fonctions d'algèbre de Boole très diverses.Rotary switches of the aforementioned type allow great flexibility in the control of devices and in particular they allow the implementation of numerous combinations of signals according to very diverse Boolean algebra functions.

Cependant, il est souhaitable que ces commutateurs soient réalisés sous une forme aussi réduite que possible afin qu'ils puissent être montés dans des appareils électriques avec un encombrement aussi faible que possible. On utilise ainsi des commutateurs dont le diamètre est d'environ 25 mm et dont le rotor a 10 ou 12 positions en rotation donc 10 ou 12 possibilités d'alignement de paires de plots de stators.However, it is desirable that these switches are made in as small a form as possible so that they can be mounted in electrical devices with as little space as possible. Switches are therefore used, the diameter of which is approximately 25 mm and the rotor of which has 10 or 12 rotational positions, therefore 10 or 12 possibilities of alignment of pairs of stator pads.

Etant donné l'utilisation de plus en plus intensive des combinaisons de fonctions, par exemple pour la commande de nombreux équipements, on s'est rendu compte qu'un seul commutateur rotatif du type connu ne suffisait pas. On a donc monté en série plusieurs commutateurs comprenant chacun deux anneaux de stator et un rotor.In view of the increasingly intensive use of combinations of functions, for example for the control of numerous pieces of equipment, it has been realized that a single rotary switch of the known type is not enough. Several switches have therefore been mounted in series, each comprising two stator rings and a rotor.

L'invention concerne un commutateur rotatif du type décrit précédemment mais qui permet l'obtention d'un plus grand nombre de combinaisons de signaux, donc d'un plus grand nombre de fonctions algébriques de Boole, par association d'au moins trois stators à un seul rotor. La réalisation d'un tel commutateur pose des problèmes complexes. En effet, on peut envisager d'utiliser deux jeux de lamelles, l'un destiné à assurer la liaison des plots du stator central et d'un stator externe et l'autre la liaison des plots du stator central et de l'autre stator externe. Cette disposition nécessite alors un rotor double et présente tous les inconvénients de l'empilage de deux commutateurs rotatifs séparés, avec une capacité plus faible cependant.The invention relates to a rotary switch of the type described above but which makes it possible to obtain a greater number of signal combinations, therefore a greater number of algebraic Boolean functions, by association of at least three stators with a single rotor. The realization of such a switch poses complex problems. Indeed, it is possible to envisage using two sets of strips, one intended to ensure the connection of the pads of the central stator and of an external stator and the other the connection of the pads of the central stator and of the other stator external. This arrangement then requires a double rotor and has all the disadvantages of stacking two separate rotary switches, with a lower capacity, however.

Selon l'invention, le commutateur rotatif ne comporte qu'un seul rotor, portant une seule série de lamelles.According to the invention, the rotary switch has only one rotor, carrying a single series of blades.

Plus précisément, le commutateur rotatif selon l'invention, du type précité, comporte un rotor et des stators annulaires sensiblement concentriques à l'axe de rotation et munis de plots de contact alignés mutuellement en direction parallèle à l'axe de rotation, de manière que les lamelles de contact supportées élastiquement par le rotor puissent relier successivement les plots alignés des stators lors de la rotation du rotor, tous les plots d'un même stator étant sensiblement à une même distance radiale de l'axe de rotation. Selon l'invention, le commutateur comporte trois stators annulaires, et le rotor ne comporte qu'une seule série de lamelles de contact placées à sa périphérie, cette série comprenant d'une part au moins une lamelle dont la dimension axiale est suffisamment faible pour qu'elle ne puisse relier que des plots de deux stators adjacents, et d'autre part au moins une lamelle dont la dimension axiale est suffisamment grande pour qu'elle puisse relier les plots de deux stators non adjacents.More specifically, the rotary switch according to the invention, of the aforementioned type, comprises a rotor and annular stators substantially concentric with the axis of rotation and provided with contact pads aligned mutually in direction parallel to the axis of rotation, so that the contact strips resiliently supported by the rotor can successively connect the aligned pads of the stators during the rotation of the rotor, all the pads of the same stator being substantially at the same distance radial of the axis of rotation. According to the invention, the switch comprises three annular stators, and the rotor comprises only one series of contact strips placed at its periphery, this series comprising on the one hand at least one strip whose axial dimension is sufficiently small to that it can only connect the pads of two adjacent stators, and on the other hand at least one strip whose axial dimension is large enough so that it can connect the pads of two non-adjacent stators.

Dans un mode de réalisation avantageux, des lamelles dont la dimension axiale est suffisamment grande peuvent venir élastiquement au contact d'un plot du stator placé entre les deux autres lorsque l'un de ces deux autres stators n'a pas de plot et l'autre en a un.In an advantageous embodiment, lamellae whose axial dimension is sufficiently large can come elastically into contact with a stud of the stator placed between the other two when one of these two other stators has no stud and the someone else has one.

Dans un autre mode de réalisation, le commutateur comporte des surfaces de butée destinées à empêcher que les lamelles dont la dimension axiale est suffisamment grande puissent venir élastiquement au contact d'un plot de stator disposé entre les deux autres, lorsque l'un de ces deux autres stators n'a pas de plot alors que l'autre en a un. Les surfaces de butée sont avantageusement formées d'une part sur une lamelle au moins et d'autre part sur des anneaux de butée disposés de part et d'autre du rotor. Ces anneaux de butée sont avantageusement formés d'une matière possédant un faible coefficient de frottement afin que le rotor tourne facilement à leur contact.In another embodiment, the switch has abutment surfaces intended to prevent the lamellae whose axial dimension is sufficiently large from being able to come elastically into contact with a stator pad disposed between the two others, when one of these two other stators have no stud while the other has one. The abutment surfaces are advantageously formed on the one hand on at least one strip and on the other hand on abutment rings arranged on either side of the rotor. These stop rings are advantageously formed from a material having a low coefficient of friction so that the rotor easily turns in contact with them.

Dans un mode de réalisation avantageux, les plots de l'un au moins des stators autres que le stator central sont plus proches de l'axe de rotation que les plots du stator central.In an advantageous embodiment, the studs of at least one of the stators other than the central stator are closer to the axis of rotation than the studs of the central stator.

Dans un autre mode de réalisation, les stators ont des plots qui sont tous pratiquement à la même distance radiale de l'axe, et les lamelles dont la dimension axiale est suffisamment grande ont une forme incurvée vers l'intérieur afin qu'elles puissent être au contact des deux stators externes sans être au contact du stator central.In another embodiment, the stators have studs which are all practically at the same radial distance from the axis, and the lamellae whose axial dimension is sufficiently large have an inwardly curved shape so that they can be in contact with the two external stators without being in contact with the central stator.

Chaque stator comporte avantageusement une couronne de matière plastique supportant les plots, et les couronnes sont empilables, deux des couronnes délimitant un logement destiné à contenir les anneaux de butée et la partie périphérique du rotor.Each stator advantageously includes a crown of plastic material supporting the studs, and the rings are stackable, two of the rings defining a housing intended to contain the stop rings and the peripheral part of the rotor.

Il est avantageux que les stators forment des couronnes empilables les unes sur les autres et comportant des dispositifs de positionnement, un dispositif convenable de maintien retenant les couronnes formant les stators dans leur disposition empilée.It is advantageous for the stators to form crowns stackable on top of each other and comprising positioning devices, a suitable holding device retaining the crowns forming the stators in their stacked arrangement.

Le commutateur rotatif selon l'invention peut aussi comprendre un plus grand nombre de stators dont les plots peuvent être reliés par des lamelles portées par un seul rotor ayant une seule série de lamelles dont les dimensions axiales sont différentes.The rotary switch according to the invention can also include a larger number of stators, the studs of which can be connected by strips carried by a single rotor having a single series of strips whose axial dimensions are different.

D'autres caractéristiques et avantages de l'invention ressortiront mieux de la description qui va suivre, faite en référence aux dessins annexés sur lesquels :

  • la figure 1 est une perspective d'un commutateur rotatif selon un mode de réalisation de l'invention ;
  • la figure 2 est une perspective éclatée du commutateur de la figure 1 ; et
  • la figure 3 est une coupe axiale du commutateur des figures 1 et 2, par un plan passant par deux lamelles de contact et par des plots de tous les stators.
  • La figure 1 est une perspective d'un commutateur rotatif selon l'invention. On note que ce commutateur a un aspect très semblable à celui d'un commutateur rotatif classique à deux rotors, mais a une longueur légèrement plus grande.
Other characteristics and advantages of the invention will emerge more clearly from the description which follows, given with reference to the appended drawings in which:
  • Figure 1 is a perspective of a rotary switch according to an embodiment of the invention;
  • Figure 2 is an exploded perspective view of the switch of Figure 1; and
  • Figure 3 is an axial section of the switch of Figures 1 and 2, through a plane passing through two contact strips and through the pads of all the stators.
  • Figure 1 is a perspective of a rotary switch according to the invention. It is noted that this switch has an appearance very similar to that of a conventional rotary switch with two rotors, but has a slightly greater length.

Plus précisément, le commutateur rotatif 10 comprend un empilement d'éléments dont dépasse un axe 12 de commande portant un bouton 14 de manoeuvre. L'empilement d'éléments comporte successivement un premier corps sensiblement cylindrique 16 destiné à contenir le mécanisme d'encliquetage destiné à maintenir le rotor dans ses diverses positions, un premier stator 18, un second stator 20, un troisième stator 22 et un couvercle 24. Ce dernier est fixé sur le troisième stator 22 par des plots 26 solidaires du troisième stator 22 et écrasés à sa surface. Des fiches 28 constituant des bornes de connexion dépassent du couvercle 24 par des trous formés dans celui-ci.More specifically, the rotary switch 10 comprises a stack of elements, one of which extends beyond a control axis 12 carrying a maneuvering button 14. The stack of elements successively comprises a first substantially cylindrical body 16 intended to contain the latching mechanism intended to maintain the rotor in its various positions, a first stator 18, a second stator 20, a third stator 22 and a cover 24 . This last is fixed to the third stator 22 by studs 26 integral with the third stator 22 and crushed on its surface. Plugs 28 constituting connection terminals protrude from the cover 24 by holes formed therein.

L'empilage du dispositif 16 d'encliquetage et des trois stators 18, 20, 22 est retenu en position de coopération par des griffes 30. En outre, des rainures 32 peuvent éventuellement être formées à la périphérie de l'empilement afin qu'elles facilitent le montage dans certains appareils.The stack of the latching device 16 and of the three stators 18, 20, 22 is retained in the cooperation position by claws 30. In addition, grooves 32 can optionally be formed at the periphery of the stack so that they facilitate installation in certain devices.

Comme indiqué précédemment, la configuration du commutateur de la figure 1 est très semblable à celle d'un commutateur classique mais elle en diffère essentiellement par la présence du troisième anneau de stator 22. En fait, les principales caractéristiques de l'invention ne sont pas apparentes sur la figure 1, car elles sont cachées à l'intérieur du commutateur.As indicated above, the configuration of the switch in FIG. 1 is very similar to that of a conventional switch, but it essentially differs therefrom by the presence of the third stator ring 22. In fact, the main characteristics of the invention are not shown in Figure 1 because they are hidden inside the switch.

Les figures 2 et 3 représentent mieux les détails d'un commutateur rotatif selon l'invention.Figures 2 and 3 better represent the details of a rotary switch according to the invention.

Le mécanisme d'encliquetage et de commande du rotor est d'un type connu. Ainsi, le corps cylindrique 16, ayant à sa périphérie une partie de gorge arrondie 32 et des gorges de section rectangulaire 34 pour le logement des griffes 30, a une partie plane sensiblement continue percée d'un trou central 36 destiné au passage de l'axe 12. Une cavité est formée à l'intérieur du corps 16 et elle est délimitée par une paroi comprenant plusieurs saillies 38 en arc de cercle séparées par des cavités 40. Le nombre de cavités et de saillies est pair afin que deux ergots 42 de positionnement, diamétralement alignés par rapport à un organe 44 de manoeuvre de rotor, se trouvent simultanément dans deux cavités 40 diamétralement opposées du corps 16 du dispositif d'encliquetage. Les ergots 42 sont logés dans des trous radiaux de l'organe 44 et sont repoussés vers l'extérieur par des ressorts 46, de manière classique. L'organe 44 de manoeuvre a en outre une saillie 48 ayant des bras radiaux qui en dépassent et qui sont destinés à entraîner le rotor en rotation.The mechanism for locking and controlling the rotor is of a known type. Thus, the cylindrical body 16, having at its periphery a rounded groove part 32 and grooves of rectangular section 34 for housing the claws 30, has a substantially continuous planar part pierced with a central hole 36 intended for the passage of the axis 12. A cavity is formed inside the body 16 and it is delimited by a wall comprising several protrusions 38 in an arc of a circle separated by cavities 40. The number of cavities and protrusions is even so that two pins 42 of positioning, diametrically aligned with respect to a rotor actuating member 44, are located simultaneously in two diametrically opposite cavities 40 of the body 16 of the latching device. The pins 42 are housed in radial holes of the member 44 and are pushed outwardly by springs 46, in a conventional manner. The actuating member 44 also has a projection 48 having radial arms which protrude therefrom and which are intended to drive the rotor in rotation.

Il faut aussi noter que le corps 16 est muni d'ergots 50 de positionnement qui dépassent en direction axiale.It should also be noted that the body 16 is provided with positioning lugs 50 which protrude in the axial direction.

Le premier stator 18 comporte un corps de forme cylindrique, ayant la configuration d'une couronne, portant un contact 52 qui est relié à une bague interne 54 qui est continue, dans le cas de ce stator. Toutes les lamelles de contact, décrites ultérieurement, sont en permanence au contact de cette couronne conductrice 54 qui équivaut à un groupe de plots en nombre maximal, dix dans le cas considéré puisque le dispositif 16 d'encliquetage détermine dix positions différentes du rotor. Les plots séparés de la couronne 54 présentent l'inconvénient, par rapport à une couronne continue, de provoquer une usure accrue au niveau des bords. La formation d'une telle couronne continue permet au contraire un contact continu si bien que l'usure est réduite. Cette couronne est cependant équivalente à des plots pour la définition de l'invention.The first stator 18 comprises a body of cylindrical shape, having the configuration of a crown, carrying a contact 52 which is connected to an internal ring 54 which is continuous, in the case of this stator. All the contact strips, described later, are permanently in contact with this conductive ring 54 which is equivalent to a group of pads in maximum number, ten in the case considered since the latching device 16 determines ten different positions of the rotor. The studs separated from the crown 54 have the disadvantage, compared to a continuous crown, of causing increased wear at the edges. The formation of such a continuous ring on the contrary allows continuous contact so that wear is reduced. This crown is however equivalent to studs for the definition of the invention.

Le corps a une cavité cylindrique 56 tournée du côté opposé au dispositif 16 d'encliquetage. Cette cavité est destinée à loger en partie le rotor, décrit lui-même plus en détail dans la suite du présent mémoire. L'anneau suivant de stator qui porte la référence 20 a lui aussi une cavité analogue 58 mais tournée vers le dispositif d'encliquetage afin que les deux cavités 56 et 58 forment un logement. Le stator 20 a plusieurs plots 60 qui sont reliés par groupes. Un premier groupe de plots est alimenté électriquement par une première fiche 62, un second groupe par une seconde fiche 64 et un troisième groupe par une troisième fiche 66. Celle-ci peut se prolonger comme représenté en traits mixtes sur la figure 2, par un bras 68 destiné à être replié au-dessus du stator 22 mais au-dessous du couvercle 24 afin que son extrémité ait une position déterminée, comme indiqué en traits interrompus sur la figure 1.The body has a cylindrical cavity 56 turned on the side opposite to the latching device 16. This cavity is intended to partially house the rotor, itself described in more detail in the remainder of this specification. The next stator ring which bears the reference 20 also has a similar cavity 58 but turned towards the latching device so that the two cavities 56 and 58 form a housing. The stator 20 has several pads 60 which are connected in groups. A first group of pads is electrically powered by a first plug 62, a second group by a second plug 64 and a third group by a third plug 66. This can be extended as shown in dashed lines in FIG. 2, by a arm 68 intended to be folded above the stator 22 but below the cover 24 so that its end has a determined position, as indicated in broken lines in FIG. 1.

Enfin, le troisième stator 22 est lui aussi muni d'un corps moulé ayant une fiche 70 de contact reliée à des plots 72 qui dépassent vers l'intérieur.Finally, the third stator 22 is also provided of a molded body having a contact plug 70 connected to studs 72 which project inwards.

Dans l'exemple représenté, ce troisième stator 22 n'a qu'un seul groupe de plots 72, mais ceux-ci sont en nombre réduit, cinq dans l'exemple considéré.In the example shown, this third stator 22 has only one group of studs 72, but these are reduced in number, five in the example considered.

Des ergots 74 de positionnement sont destinés à pénétrer dans des trous 76 du premier stator 18 et dans des trous 78 du troisième stator 22 et 80 du couvercle 24. Les extrémités des ergots forment les saillies 26 qui retiennent le couvercle 24 sur les autres éléments.Positioning lugs 74 are intended to penetrate holes 76 of the first stator 18 and holes 78 of the third stator 22 and 80 of the cover 24. The ends of the lugs form the projections 26 which retain the cover 24 on the other elements.

Le dispositif 16 d'encliquetage, les trois stators 18, 20 et 22 et le couvercle 24 sont donc empilés au contact les uns des autres, en position déterminée en rotation étant donné la coopération des ergots de positionnement et de leurs trous de logement. Ils forment ainsi un ensemble fixe dont dépassent les bornes 28 de contact et l'axe rotatif 12 et ils délimitent une cavité interne destinée à loger le rotor, décrit dans la suite du présent mémoire.The latching device 16, the three stators 18, 20 and 22 and the cover 24 are therefore stacked in contact with each other, in a position determined in rotation given the cooperation of the positioning pins and their housing holes. They thus form a fixed assembly which extends beyond the contact terminals 28 and the rotary axis 12 and they delimit an internal cavity intended to house the rotor, described hereinafter in this specification.

Le rotor 80 a une forme cylindrique plate dont dépasse un flasque 82. Celui-ci est destiné à se loger dans la cavité 56, 58 formée par les stators 18, 20, avec deux anneaux de butée 84, 86 qui facilitent le glissement du flasque 82 dans les stators. De chaque côté, le stator a une cavité 88, 90 délimitée par des saillies et qui est complémentaire de la saillie 48 portée par l'organe de manoeuvre 44. La cavité 88 est destinée à coopérer avec la saillie 40 de l'organe de manoeuvre alors que la saillie 90, tournée de l'autre côté, permet le montage d'un élément de raccordement d'un autre commutateur, monté sur le commutateur représenté après enlèvement du couvercle 24, le cas échéant.The rotor 80 has a flat cylindrical shape of which protrudes from a flange 82. This is intended to be housed in the cavity 56, 58 formed by the stators 18, 20, with two stop rings 84, 86 which facilitate the sliding of the flange 82 in the stators. On each side, the stator has a cavity 88, 90 delimited by projections and which is complementary to the projection 48 carried by the operating member 44. The cavity 88 is intended to cooperate with the projection 40 of the operating member while the projection 90, turned on the other side, allows the mounting of a connecting element of another switch, mounted on the switch shown after removal of the cover 24, if necessary.

Le corps du rotor 80 comporte des cavités 92, dirigées radialement et destinées à contenir chacune un ensemble 94 à lamelle.The rotor body 80 has cavities 92, directed radially and each intended to contain an assembly 94 with lamella.

Chaque ensemble 94 comporte d'abord un organe de guidage qui comporte une première barrette 96 destinée à pénétrer dans une fente de chaque logement 92 du rotor 80 et une seconde barrette 98 qui en dépasse latéralement et qui est destinée à supporter une lamelle. Cette barrette 98 se termine par une extrémité 100 dont la forme permet l'introduction de la lamelle associée de contact tout en la retenant afin qu'elle ne puisse pas sortir.Each assembly 94 first comprises a guide member which comprises a first bar 96 intended to penetrate a slot in each housing 92 of the rotor 80 and a second bar 98 which projects laterally and which is intended to support a strip. This bar 98 ends with an end 100 whose shape allows the introduction of the associated contact strip while retaining it so that it cannot come out.

La lamelle 102 comprend elle-même un corps se terminant par deux parties 106 de contact qui ont une forme arrondie et le corps est entouré par deux joues 108 repliées de part et d'autre et se terminant par un pied 110.The strip 102 itself comprises a body ending in two contact parts 106 which have a rounded shape and the body is surrounded by two cheeks 108 folded in on either side and ending in a foot 110.

Comme l'indique clairement la figure 3, chaque lamelle 102 a un trou central dans lequel passe la barrette 98 de l'organe de guidage. Les parties 106 de contact sont destinées à venir contre des plots tels que 54, 60, 72 et les joues 108 sont destinées à limiter le déplacement de chaque lamelle 102 vers l'extérieur, par contact de ces joues 108 avec les anneaux 84, 86 de butée. Un ressort 104 repousse normalement chaque lamelle 102 vers les anneaux de butée. De cette manière, les parties 106 de contact ont tendance à venir contre les plots.As clearly indicated in Figure 3, each strip 102 has a central hole through which the bar 98 of the guide member passes. The contact parts 106 are intended to come against studs such as 54, 60, 72 and the cheeks 108 are intended to limit the movement of each strip 102 towards the outside, by contact of these cheeks 108 with the rings 84, 86 stop. A spring 104 normally pushes each lamella 102 toward the stop rings. In this way, the contact parts 106 tend to come against the studs.

La figure 3 représente clairement les principales caractéristiques de l'invention. Dans la partie gauche de cette figure, une lamelle a une dimension axiale relativement courte si bien que, comme représenté, elle peut être au contact de plots 54, 60 du premier et du second stator 18, 20. Cependant, elle est trop courte pour venir au contact des plots 72 du troisième stator 22. Au contraire, sur la partie droite de la figure 3, la lamelle représentée 102 a une dimension axiale plus grande si bien qu'elle peut être simultanément au contact d'un plot 54 du premier stator 18 et d'un plot 72 du troisième stator 22, sans être au contact d'un plot 60 du second stator 20. On note en outre sur la figure 3 que, si le plot 72 était supprimé, la partie inférieure de contact ne pourrait pas venir contre le plot 60 du second stator 20 car la joue 108 viendrait alors au contact de l'anneau 86 de butée, dans la partie cerclée 112.Figure 3 clearly shows the main features of the invention. In the left part of this figure, a strip has a relatively short axial dimension so that, as shown, it can be in contact with studs 54, 60 of the first and second stator 18, 20. However, it is too short for come into contact with the pads 72 of the third stator 22. On the contrary, on the right part of FIG. 3, the strip shown 102 has a larger axial dimension so that it can be simultaneously in contact with a pad 54 of the first stator 18 and a pad 72 of the third stator 22, without being in contact with a pad 60 of the second stator 20. It is further noted in FIG. 3 that, if the pad 72 was removed, the lower contact part does not could not come against the stud 60 of the second stator 20 because the cheek 108 would then come into contact with the stop ring 86, in the circled part 112.

Dans une variante, la forme des joues 108 permet le contact de la lamelle 102 avec un plot 60 du stator intermédiaire 20. De cette manière, le nombre de combinaisons qui peut être obtenu avec le commutateur rotatif est notablement accru.In a variant, the shape of the cheeks 108 allows the contact of the strip 102 with a stud 60 of the intermediate stator 20. In this way, the number of combinations which can be obtained with the rotary switch is notably increased.

Bien qu'on ait décrit un commutateur ayant trois stators, l'invention s'applique aussi à des commutateurs comprenant un plus grand nombre de stators. Par exemple, un stator supplémentaire peut être monté entre le dispositif 16 d'encliquetage et le premier stator 18. Sa disposition est alors tout à fait analogue à celle du troisième stator 22, mais il est inversé par rapport à celui-ci. Dans un tel mode de réalisation, les lamelles peuvent assurer le contact entre deux stators adjacents seulement, entre deux stators séparés par un troisième stator ou entre les stators les plus éloignés.Although a switch having three stators has been described, the invention also applies to switches comprising a larger number of stators. For example, an additional stator can be mounted between the latching device 16 and the first stator 18. Its arrangement is then completely similar to that of the third stator 22, but it is reversed with respect to the latter. In such an embodiment, the blades can ensure contact between two adjacent stators only, between two stators separated by a third stator or between the most distant stators.

Il est bien entendu que l'invention n'a été décrite et représentée qu'à titre d'exemple préférentiel et qu'on pourra apporter toute équivalence technique dans ses éléments constitutifs sans pour autant sortir de son cadre.It is understood that the invention has only been described and shown as a preferred example and that any technical equivalence may be made in its constituent elements without going beyond its ambit.

Claims (10)

1. Commutateur électrique rotatif, du type qui comporte un rotor (80) destiné à tourner autour d'un axe de rotation, et des stators annulaires (18, 20) sensiblement concentriques à l'axe de rotation et munis de plots de contact, des plots de contact de deux stators étant alignés mutuellement en direction parallèle à l'axe de rotation de manière que des lamelles (102) de contact supportées élastiquement par le rotor (80) puissent relier successivement des plots alignés des stators lors de la rotation du rotor, tous les plots d'un même stator étant sensiblement à la même distance radiale de l'axe de rotation, caractérisé en ce qu'il comprend trois stators annulaires (18, 20, 22), et en ce que le rotor (80) comporte une seule série de lamelles (102) placées à sa périphérie et comprenant d'une part au moins une lamelle dont la dimension axiale est suffisamment faible pour qu'elle ne puisse relier que des plots (54, 60) de deux stators adjacents (18, 20), et d'autre part au moins une lamelle dont la dimension axiale est suffisamment grande pour qu'elle puisse relier des plots (54, 72) de deux stators non adjacents (18, 22).1. Rotary electrical switch, of the type which comprises a rotor (80) intended to rotate about an axis of rotation, and annular stators (18, 20) substantially concentric with the axis of rotation and provided with contact pads, contact pads of two stators being mutually aligned in a direction parallel to the axis of rotation so that contact strips (102) resiliently supported by the rotor (80) can successively connect aligned pads of the stators during rotation of the rotor, all the studs of the same stator being substantially at the same radial distance from the axis of rotation, characterized in that it comprises three annular stators (18, 20, 22), and in that the rotor (80 ) comprises a single series of strips (102) placed at its periphery and comprising on the one hand at least one strip whose axial dimension is sufficiently small so that it can only connect pads (54, 60) of two adjacent stators (18, 20), and on the other hand at least one lamell e whose axial dimension is large enough for it to connect pads (54, 72) of two non-adjacent stators (18, 22). 2. Commutateur selon la revendication 1, caractérisé en ce qu'au moins une lamelle (102) dont la dimension axiale est suffisamment grande peut venir élastiquement au contact d'un plot (60) du stator (20) disposé entre les deux autres (18, 22) lorsque l'un de ces deux autres stators n'a pas de plot alors que l'autre en a un.2. Switch according to claim 1, characterized in that at least one strip (102) whose axial dimension is sufficiently large can come elastically into contact with a stud (60) of the stator (20) disposed between the other two ( 18, 22) when one of these two other stators has no stud while the other has one. 3. Commutateur selon la revendication 1, caractérisé en ce qu'il comporte des surfaces de butée destinées à empêcher qu'une lamelle (102) dont la dimension axiale est suffisamment grande puisse venir élastiquement au contact d'un plot (60) du stator (20) disposé entre les deux autres (18, 22) lorsque l'un de ces deux autres stators n'a pas de plot alors que l'autre en a un.3. Switch according to claim 1, characterized in that it comprises abutment surfaces intended to prevent that a strip (102) whose axial dimension is sufficiently large can come elastically into contact with a stud (60) of the stator (20) disposed between the other two (18, 22) when one of these two other stators has no stud while the other has one. 4. Commutateur selon la revendication 3, caractérisé en ce que les surfaces de butée sont formées d'une part sur la lamelle (102) et d'autre part sur des anneaux de butée (84, 86) disposés de part et d'autre du rotor (80).4. Switch according to claim 3, characterized in that the abutment surfaces are formed on the one hand on the lamella (102) and on the other hand on rings of stop (84, 86) arranged on either side of the rotor (80). 5. Commutateur selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend des anneaux (84, 86) formés d'une matière possédant un faible coefficient de frottement et disposés entre le rotor (80) et deux stators (18, 20) afin que le rotor tourne facilement à leur contact.5. Switch according to any one of the preceding claims, characterized in that it comprises rings (84, 86) formed of a material having a low coefficient of friction and arranged between the rotor (80) and two stators (18 , 20) so that the rotor turns easily in contact with them. 6. Commutateur selon l'une quelconque des revendications précédentes, caractérisé en ce que les plots (70) de l'un au moins des stators (22) autre que le stator central (20) sont plus proches de l'axe de rotation que les plots (60) du stator central (20).6. Switch according to any one of the preceding claims, characterized in that the studs (70) of at least one of the stators (22) other than the central stator (20) are closer to the axis of rotation than the studs (60) of the central stator (20). 7. Commutateur selon l'une quelconque des revendications 1 à 5, caractérisé en ce que les plots des différents stators se trouvent tous sensiblement à la même distance radiale de l'axe de rotation, et la lamelle suffisamment grande a une forme courbe.7. Switch according to any one of claims 1 to 5, characterized in that the pads of the different stators are all substantially at the same radial distance from the axis of rotation, and the sufficiently large strip has a curved shape. 8. Commutateur selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comporte au moins quatre stators associés à un seul rotor ayant une seule série de lamelles.8. Switch according to any one of the preceding claims, characterized in that it comprises at least four stators associated with a single rotor having a single series of blades. 9. Commutateur selon l'une quelconque des revendications précédentes, caractérisé en ce que chaque stator est formé par une couronne de matière plastique supportant les plots, et les couronnes sont empilables, et en ce que deux stators adjacents (18, 20) délimitent un logement (56, 58) destiné à guider le rotor pendant sa rotation.9. Switch according to any one of the preceding claims, characterized in that each stator is formed by a crown of plastic material supporting the studs, and the crowns are stackable, and in that two adjacent stators (18, 20) define a housing (56, 58) intended to guide the rotor during its rotation. 10. Commutateur selon la revendication 9, caractérisé en ce que les couronnes formant les stators sont empilables, et le commutateur comporte des dispositifs de positionnement des couronnes les unes par rapport aux autres et des dispositifs de maintien (30) des couronnes les unes contre les autres.10. Switch according to claim 9, characterized in that the crowns forming the stators are stackable, and the switch comprises devices for positioning the crowns relative to each other and holding devices (30) of the crowns against each other. other.
EP83400373A 1982-02-26 1983-02-23 Electric rotary switch Withdrawn EP0088014A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8203200 1982-02-26
FR8203200A FR2522439A1 (en) 1982-02-26 1982-02-26 ROTARY ELECTRIC SWITCH

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EP0088014A1 true EP0088014A1 (en) 1983-09-07

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2584232A1 (en) * 1985-06-28 1987-01-02 Siemens Ag Switching selector with circuit boards
EP0287467A1 (en) * 1987-04-14 1988-10-19 Marcel Henri Deltoer Electrical switch with integrated connector

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE806690C (en) * 1949-08-23 1951-06-18 Busch Jaeger Luedenscheider Me Electrical rotary switch, the base of which, carrying the stationary contact parts and the connection terminals, is made from stacked, e.g. consists of annular parts
FR1398866A (en) * 1964-04-01 1965-05-14 Rotary switch and method of manufacturing a stator for such switches
US3668338A (en) * 1971-02-01 1972-06-06 Grayhill Miniature axial bridging rotary switch with improved housing

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE806690C (en) * 1949-08-23 1951-06-18 Busch Jaeger Luedenscheider Me Electrical rotary switch, the base of which, carrying the stationary contact parts and the connection terminals, is made from stacked, e.g. consists of annular parts
FR1398866A (en) * 1964-04-01 1965-05-14 Rotary switch and method of manufacturing a stator for such switches
US3668338A (en) * 1971-02-01 1972-06-06 Grayhill Miniature axial bridging rotary switch with improved housing

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2584232A1 (en) * 1985-06-28 1987-01-02 Siemens Ag Switching selector with circuit boards
EP0287467A1 (en) * 1987-04-14 1988-10-19 Marcel Henri Deltoer Electrical switch with integrated connector
FR2614141A1 (en) * 1987-04-14 1988-10-21 Deltoer Marcel ELECTRICAL SWITCH WITH INTEGRATED CONNECTOR
US4866220A (en) * 1987-04-14 1989-09-12 Deltoer Marcel H Electric switch with integrated connector

Also Published As

Publication number Publication date
FR2522439B1 (en) 1984-04-06
FR2522439A1 (en) 1983-09-02

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