EP0130861B1 - Tumbler switch - Google Patents

Tumbler switch Download PDF

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Publication number
EP0130861B1
EP0130861B1 EP84401057A EP84401057A EP0130861B1 EP 0130861 B1 EP0130861 B1 EP 0130861B1 EP 84401057 A EP84401057 A EP 84401057A EP 84401057 A EP84401057 A EP 84401057A EP 0130861 B1 EP0130861 B1 EP 0130861B1
Authority
EP
European Patent Office
Prior art keywords
spring
central arm
movable contact
switch according
central
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
Application number
EP84401057A
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German (de)
French (fr)
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EP0130861A1 (en
Inventor
Georges Ranson
Louis Pommier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cessione russenberger
Original Assignee
Mors SA
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Publication date
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Priority to AT84401057T priority Critical patent/ATE26042T1/en
Publication of EP0130861A1 publication Critical patent/EP0130861A1/en
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Publication of EP0130861B1 publication Critical patent/EP0130861B1/en
Expired legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H23/00—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button
    • H01H23/02—Details
    • H01H23/12—Movable parts; Contacts mounted thereon
    • H01H23/16—Driving mechanisms
    • H01H23/20—Driving mechanisms having snap action
    • H01H23/205—Driving mechanisms having snap action using a compression spring between tumbler and an articulated contact plate

Definitions

  • the present invention relates to an electrical switch which can be for example a simple switch, an inverter or a switch, preferably of reduced dimensions, for example for household appliances.
  • switches or reversers of the tilting type having, in a housing, a lever pivoting about a central axis and intended to switch a pivoting contact between two extreme positions corresponding to the two positions of the controller.
  • the present invention proposes to remedy these drawbacks and to provide a switch or reverser which is simple and economical to manufacture and assemble and which makes it possible to ensure perfect stability, without rebound, of the extreme positions of the movable contact while having a high durability and high wear resistance.
  • the subject of the invention is a switch, which can be a simple switch, an inverter or a switch, comprising, in a housing carrying the terminals, a lever pivoting about a central axis between two extreme working positions, a pivoting movable contact.
  • the lateral play between the external turns of the spring and the wall of the well which guides the spring can be extremely reduced.
  • This clearance is advantageously of the order of 3% of the diameter of the spring, this so as to be able to take into account, during industrial assembly, the molding tolerances of the internal well and the manufacturing tolerances of the spring.
  • the spring preferably has, at the end oriented towards the central arm of the movable contact, several contiguous turns so as to ensure excellent guidance with minimal lateral deformation.
  • the latter may have contiguous turns at its two ends, the non-contiguous turns which ensure the elasticity of the spring being arranged in the central part thereof. .
  • a switch is obtained in which the passage of the movable contact from one of the extreme positions to the other is effected with a frank click, the movable contact then being held in its extreme position, by example by being applied against a fixed terminal, in a way that eliminates kickback and ensures perfect stability of this position.
  • the switch according to the invention lends itself to industrial assembly capable of being fully automated.
  • the switch shown in the drawings comprises a switch box 1 having the general shape of a rectangular parallelepiped and provided, in a known manner, with lateral tabs 2.
  • the box 1 thus forms an internal volume of substantially parallelepiped shape, the upper opening is substantially closed by the pivoting lever 3 which has substantially the shape of an inverted bowl whose front and rear walls are pivotally mounted relative to the housing by means of holes and pivots designated by 4.
  • the lower opening of the internal volume of the housing 1 is closed by a base 5 forming a base and carrying a lateral terminal 6 and a central terminal 7, these terminals having shapes in themselves known and being fixedly mounted in the housing by means known.
  • We see at 8 a passage from the bottom 5 which would allow the insertion of a second terminal 6 if necessary.
  • the contact terminal 7 has two front and rear tabs 9 provided with a central notch 10 open upwards and having in its center a boss 11 forming a pivoting surface each time for a tab 13 laterally offset from the movable contact 12.
  • the contact mobile 12 has, for example by stamping, a central arm 14 which rises towards the pivoting lever.
  • the central arm 14 carries at its end a chamfered extension 15 so as to narrow upwards as can be seen in particular in FIG. 3, this extension separating two horizontal spans 16 formed by the end of the arm 14.
  • a helical spring 20 whose upper turns at the level of the boss 19 and the lower turns at the level of the end 15 are contiguous while the intermediate turns are not contiguous and make it possible to ensure the elastic deformation of the spring.
  • This spring is mounted in compression and it is understood that, under these conditions, the last turn 21 is applied elastically against the arm 14 and more precisely against the two bearing surfaces 16 while the extension 15 enters the last turns of the spring.
  • the diametral clearance between the internal surface of the well 18 and the external surface of the coils of the helical spring, for a spring having a diameter of 3.3 mm with a spring wire of 45 hundredths of a millimeter, is of the order of 0, 1mm.
  • the clearance between the extension 15 and the internal diameter of the last turn 21 of the spring is such that, taking into account the thickness of the arm 14, the respective arrangement between turn and extension shown in FIG. 1 can be reached in tilted position.
  • This diametral clearance can for example be of the order of 0.2 mm, or 8% of the diameter of the spring.
  • the height of the extension 15 may advantageously be of the order of 0.8 mm, its width at the base of the order of 2.2 mm, its width at the end of the order of 1.9 mm, this for a tab thickness 14 of the order of 0.6 mm.

Landscapes

  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Lock And Its Accessories (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Tumbler Switches (AREA)
  • Massaging Devices (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Push-Button Switches (AREA)

Abstract

1. A switch comprising, in a case (1) carrying the terminals (6, 7), an operating lever (3) pivoting about a central pin (4) between two extreme working positions, a movable contact (12) pivoting about a second pin (11) situated below the first and having a central arm (14) substantially aligned with the direction of said two pins when the movable contact is in an intermediate position, and a helical spring (20) applying a thrust to the free end of said central arm (14), said spring (20) being substantially aligned with said central arm in the direction joining said two pins when the movable contact and the operating lever are in an intermediate position, characterised in that said spring (20) is guided in the operating lever (3) in a bore (17)in this, with a slight clearance only permitting a very limited lateral deflection of the spring (20), and in that the end of the central arm (14) of the movable contact (12) has an extension (15) penetrating into the last turn of the spring (20) with sufficient play to allow the central arm to adopt the one or the other of the extreme positions in which it forms an angle with the longitudinal direction of the spring (20) without causing appreciable deformation of the end of the spring.

Description

La présente invention a trait à un interrupteur électrique pouvant être par exemple un interrupteur simple, un inverseur ou un commutateur, de préférence de dimensions réduites, par exemple pour appareils électroménagers.The present invention relates to an electrical switch which can be for example a simple switch, an inverter or a switch, preferably of reduced dimensions, for example for household appliances.

On connaît déjà (FR-A-2,455,788) des interrupteurs ou inverseurs du type basculant possédant, dans un boîtier, une manette pivotant autour d'un axe central et destinée à faire basculer un contact pivotant entre deux positions extrêmes correspondant aux deux positions de la manette.We already know (FR-A-2,455,788) switches or reversers of the tilting type having, in a housing, a lever pivoting about a central axis and intended to switch a pivoting contact between two extreme positions corresponding to the two positions of the controller.

Afin, d'une part, de faire basculer le contact mobile sous l'effet du basculement de la manette pivotante, et d'autre part, de maintenir l'ensemble de façon stable dans chacune des deux positions extrêmes, on a déjà prévu d'entraîner le contact mobile par l'intermédiaire d'un ressort hélicoïdal s'appuyant d'une part sur la manette et d'autre part sur un bras central du contact mobile disposé de façon telle que, lorsque la manette se trouve dans sa position centrale intermédiaire entre les deux positions extrêmes, le bras central et le ressort se trouvent sensiblement alignés dans la direction joignant les deux axes de pivotement respectifs de la manette et du contact mobile. Lorsque cette position est dépassée, le ressort, qui travaille en compression, se déforme également latéralement vers le bras central et repousse celui-ci dans la position basculée extrême correspondante.In order, on the one hand, to switch the movable contact under the effect of the tilting of the pivoting lever, and on the other hand, to keep the assembly stably in each of the two extreme positions, provision has already been made for '' driving the movable contact by means of a helical spring resting on the one hand on the lever and on the other hand on a central arm of the movable contact arranged in such a way that, when the lever is in its position central intermediate between the two extreme positions, the central arm and the spring are substantially aligned in the direction joining the two respective pivot axes of the lever and of the movable contact. When this position is exceeded, the spring, which works in compression, also deforms laterally towards the central arm and pushes the latter into the corresponding extreme tilted position.

Une telle disposition présente l'inconvénient, par la déformation du ressort, d'entraîner une certaine instabilité des positions extrêmes et une possibilité d'oscillation préjudiciable à l'établissement immédiat d'un contact franc, avec toutes les conséquences d'usure que cela entraîne, notamment par formation d'étincelles.Such an arrangement has the disadvantage, by the deformation of the spring, of causing a certain instability of the extreme positions and a possibility of oscillation detrimental to the immediate establishment of a frank contact, with all the consequences of wear and tear that this causes, in particular by the formation of sparks.

On a également déjà prévu (FR-A-2,298,176) de réaliser un interrupteur dans lequel le ressort n'agit pas directement sur le contact mobile mais repousse un plongeur guidé dans la manette et dont l'extrémité émergente travaille avec des surfaces inclinées en forme de rampe du contact mobile. Dans ce cas, il n'y a plus de déformation latérale du ressort mais un tel contact nécessite l'utilisation d'une pièce intermédiaire de précision, à savoir le plongeur, avec également une difficulté d'obtenir une stabilité maximale dans les deux positions extrêmes en raison des rapports angulaires peu favorables entre le plongeur et les surfaces correspondantes du contact mobile.We have also already planned (FR-A-2,298,176) to produce a switch in which the spring does not act directly on the movable contact but pushes a plunger guided in the lever and whose emerging end works with inclined surfaces in shape of the mobile contact ramp. In this case, there is no longer any lateral deformation of the spring, but such contact requires the use of a precision intermediate piece, namely the plunger, with also a difficulty in obtaining maximum stability in the two positions. extreme due to the unfavorable angular relationships between the plunger and the corresponding surfaces of the movable contact.

La présente invention se propose de remédier à ces inconvénients et de fournir un interrupteur ou inverseur qui soit de fabrication et de montage simples et économiques et qui permette d'assurer une stabilité parfaite, sans rebond, des positions extrêmes du contact mobile tout en possédant une longévité élevée et une importante résistance à l'usure.The present invention proposes to remedy these drawbacks and to provide a switch or reverser which is simple and economical to manufacture and assemble and which makes it possible to ensure perfect stability, without rebound, of the extreme positions of the movable contact while having a high durability and high wear resistance.

L'invention a pour objet un interrupteur, pouvant être un interrupteur simple, un inverseur ou un commutateur, comportant, dans un boîtier portant les bornes, une manette pivotant autour d'un axe central entre deux positions extrêmes de travail, un contact mobile pivotant autour d'un second axe situé sous le premier et présentant un bras central sensiblement aligné avec la direction rejoignant lesdits deux axes lorsque le contact mobile est en position intermédiaire, et un ressort hélicoïdal appliquant une poussée sur l'extrémité libre dudit bras central, ledit ressort étant sensiblement aligné avec ledit bras central dans la direction joignant lesdits deux axes lorsque le contact mobile et la manette sont en position intermédiaire, caractérisé en ce que ledit ressort est guidé dans la manette dans un puits de celle- ci, avec un faible jeu n'autorisant qu'un débattement latéral très limité du ressort, et en ce que l'extrémité du bras central du contact mobile possède un prolongement pénétrant dans la dernière spire du ressort avec un jeu suffisant pour permettre au bras central d'adopter l'une ou l'autre des positions extrêmes dans lesquelles il forme un angle avec la direction longitudinale du ressort sans provoquer de déformation sensible de l'extrémité du ressort.The subject of the invention is a switch, which can be a simple switch, an inverter or a switch, comprising, in a housing carrying the terminals, a lever pivoting about a central axis between two extreme working positions, a pivoting movable contact. around a second axis located under the first and having a central arm substantially aligned with the direction joining said two axes when the movable contact is in the intermediate position, and a helical spring applying a thrust on the free end of said central arm, said spring being substantially aligned with said central arm in the direction joining said two axes when the movable contact and the lever are in the intermediate position, characterized in that said spring is guided in the lever in a well thereof, with little play allowing only a very limited lateral movement of the spring, and in that the end of the central arm of the movable contact has an extension pe entering the last turn of the spring with sufficient play to allow the central arm to adopt one or other of the extreme positions in which it forms an angle with the longitudinal direction of the spring without causing appreciable deformation of the end spring.

Le jeu latéral entre les spires externes du ressort et la paroi du puits qui guide le ressort peut être extrêmement réduit. Ce jeu est avantageusement de l'ordre de 3 % du diamètre du ressort, ceci de façon à pouvoir tenir compte, lors du montage industriel, des tolérances de moulage du puits interne et des tolérances de fabrication du ressort.The lateral play between the external turns of the spring and the wall of the well which guides the spring can be extremely reduced. This clearance is advantageously of the order of 3% of the diameter of the spring, this so as to be able to take into account, during industrial assembly, the molding tolerances of the internal well and the manufacturing tolerances of the spring.

Le ressort présente de préférence, à l'extrémité orientée vers le bras central du contact mobile, plusieurs spires jointives de façon à assurer un excellent guidage avec une déformation latérale minimale. Dans ce cas, afin d'assurer une réversibilité du ressort facilitant le montage, celui-ci peut présenter des spires jointives à ses deux extrémités, les spires non jointives qui assurent l'élasticité du ressort étant disposées dans la partie centrale de celui-ci.The spring preferably has, at the end oriented towards the central arm of the movable contact, several contiguous turns so as to ensure excellent guidance with minimal lateral deformation. In this case, in order to ensure a reversibility of the spring facilitating the assembly, the latter may have contiguous turns at its two ends, the non-contiguous turns which ensure the elasticity of the spring being arranged in the central part thereof. .

On obtient, grâce à l'invention, un interrupteur dans lequel le passage du contact mobile de l'une des positions extrêmes à l'autre s'effectue avec un déclic franc, le contact mobile se trouvant ensuite maintenu dans sa position extrême, par exemple en étant appliqué contre une borne fixe, d'une façon qui élimine le rebond et assure une stabilité parfaite de cette position. Les essais réalisés ont montré que les interrupteurs ainsi constitués selon l'invention peuvent être soumis à un nombre extrêmement élevé de manoeuvres de basculement avec une usure minimale.Thanks to the invention, a switch is obtained in which the passage of the movable contact from one of the extreme positions to the other is effected with a frank click, the movable contact then being held in its extreme position, by example by being applied against a fixed terminal, in a way that eliminates kickback and ensures perfect stability of this position. The tests carried out have shown that the switches thus formed according to the invention can be subjected to an extremely high number of tilting operations with minimal wear.

En outre, l'interrupteur selon l'invention se prête à un assemblage industriel susceptible d'être entièrement automatisé.In addition, the switch according to the invention lends itself to industrial assembly capable of being fully automated.

D'autres avantages et caractéristiques de l'invention apparaîtront à la lecture de la description suivante, faite à titre d'exemple non limitatif et se référant aux dessins annexés dans lesquels :

  • La figure 1 représente une vue en coupe selon un plan perpendiculaire au plan des axes d'un interrupteur selon l'invention.
  • La figur: 2 représente une vue de dessus du contact mobile.
  • La figure 3 représente une vue en coupe III-III de la figure 2.
  • La figure 4 représente une vue de côté d'une borne centrale recevant de façon pivotante le contact mobile.
Other advantages and characteristics of the invention will appear on reading the following description, given by way of nonlimiting example and referring to the appended drawings in which:
  • Figure 1 shows a sectional view along a plane perpendicular to the plane of the axes of a switch according to the invention.
  • Figure 2 shows a top view of the mobile contact.
  • FIG. 3 represents a sectional view III-III of FIG. 2.
  • Figure 4 shows a side view of a central terminal pivotally receiving the movable contact.

L'interrupteur représenté sur les dessins comporte un boîtier d'interrupteur 1 ayant la forme générale d'un parallélépipède rectangle et muni, d'une façon connue, de pattes latérales 2. Le boîtier 1 forme ainsi un volume interne de forme sensiblement parallélépipédique dont l'ouverture supérieure est sensiblement obturée par la manette pivotante 3 qui présente sensiblement la forme d'une cuvette renversée dont les parois antérieure et postérieure sont montées de façon pivotante par rapport au boîtier au moyen de trous et de pivots désignés par 4. L'ouverture inférieure du volume interne au boîtier 1 est obturée par un fond 5 formant socle et portant une borne latérale 6 et une borne centrale 7, ces bornes ayant des formes en elles- même connues et étant montées de façon fixe dans le boîtier par des moyens connus. On voit en 8 un passage du fond 5 qui permettrait l'insertion d'une seconde borne 6 si nécessaire. La borne de contact 7 présente deux pattes antérieure et postérieure 9 munies d'une encoche centrale 10 ouverte vers le haut et présentant en son centre un bossage 11 formant surface de pivotement chaque fois pour une patte 13 latéralement déportée du contact mobile 12. Le contact mobile 12 présente, par exemple par estampage, un bras central 14 qui se dresse vers la manette pivotante. Le bras central 14 porte à son extrémité un prolongement 15 chanfreiné de façon à se rétrécir vers le haut comme on le voit notamment sur la figure 3, ce prolongement séparant deux portées horizontales 16 formées par l'extrémité du bras 14.The switch shown in the drawings comprises a switch box 1 having the general shape of a rectangular parallelepiped and provided, in a known manner, with lateral tabs 2. The box 1 thus forms an internal volume of substantially parallelepiped shape, the upper opening is substantially closed by the pivoting lever 3 which has substantially the shape of an inverted bowl whose front and rear walls are pivotally mounted relative to the housing by means of holes and pivots designated by 4. The lower opening of the internal volume of the housing 1 is closed by a base 5 forming a base and carrying a lateral terminal 6 and a central terminal 7, these terminals having shapes in themselves known and being fixedly mounted in the housing by means known. We see at 8 a passage from the bottom 5 which would allow the insertion of a second terminal 6 if necessary. The contact terminal 7 has two front and rear tabs 9 provided with a central notch 10 open upwards and having in its center a boss 11 forming a pivoting surface each time for a tab 13 laterally offset from the movable contact 12. The contact mobile 12 has, for example by stamping, a central arm 14 which rises towards the pivoting lever. The central arm 14 carries at its end a chamfered extension 15 so as to narrow upwards as can be seen in particular in FIG. 3, this extension separating two horizontal spans 16 formed by the end of the arm 14.

Au centre de la cuvette rectangulaire renversée que forme la manette 3 se dresse une paroi cylindrique 17 formant un puits 18 avec, au fond du puits, un bossage central 19. Dans ce puits est logé un ressort hélicoïdal 20 dont les spires supérieures au niveau du bossage 19 et les spires inférieures au niveau de l'extrémité 15 sont jointives alors que les spires intermédiaires ne sont pas jointives et permettent d'assurer la déformation élastique du ressort. Ce ressort est monté en compression et l'on comprend que, dans ces conditions, la dernière spire 21 s'applique élastiquement contre le bras 14 et plus précisément contre les deux portées 16 alors que le prolongement 15 pénètre dans les dernières spires du ressort.In the center of the inverted rectangular bowl formed by the handle 3 stands a cylindrical wall 17 forming a well 18 with, at the bottom of the well, a central boss 19. In this well is housed a helical spring 20 whose upper turns at the level of the boss 19 and the lower turns at the level of the end 15 are contiguous while the intermediate turns are not contiguous and make it possible to ensure the elastic deformation of the spring. This spring is mounted in compression and it is understood that, under these conditions, the last turn 21 is applied elastically against the arm 14 and more precisely against the two bearing surfaces 16 while the extension 15 enters the last turns of the spring.

Le jeu diamétral entre la surface interne du puits 18 et la surface externe des spires du ressort hélicoïdal, pour un ressort ayant un diamètre de 3,3 mm avec un fil de ressort de 45 centièmes de millimètre, est de l'ordre de 0,1mm. Pour ces mêmes dimensions, le jeu entre le prolongement 15 et le diamètre interne de la dernière spire 21 du ressort est tel que, compte tenu de l'épaisseur du bras 14, la disposition respective entre spire et prolongement représentée sur la figure 1 puisse être atteinte en position basculée. Ce jeu diamétral peut être par exemple de l'ordre de 0,2 mm, soit 8 % du diamètre du ressort.The diametral clearance between the internal surface of the well 18 and the external surface of the coils of the helical spring, for a spring having a diameter of 3.3 mm with a spring wire of 45 hundredths of a millimeter, is of the order of 0, 1mm. For these same dimensions, the clearance between the extension 15 and the internal diameter of the last turn 21 of the spring is such that, taking into account the thickness of the arm 14, the respective arrangement between turn and extension shown in FIG. 1 can be reached in tilted position. This diametral clearance can for example be of the order of 0.2 mm, or 8% of the diameter of the spring.

Dans la position basculée extrême représentée sur la figure 1, dans laquelle le contact mobile est en contact électrique avec la borne 6, la dernière spire 21 du ressort qui s'applique sur les portées 16 du bras 14, a tendance à repousser fortement le bras 14 dans la direction le faisant basculer davantage et appliquant une force de contact électrique entre le contact 12 et la borne 6. On voit que le ressort 20 travaille essentiellement en poussée axiale sous l'effet de sa compression, sans être pratiquement déformé latéralement vers la gauche du dessin en raison de la présence de la paroi 17 du puits 18 (on doit comprendre qu'en réalité, dans la position représentée, l'extrémité inférieure du ressort 20 serait venue s'appliquer contre la paroi 17, vers la gauche après avoir annulé le petit jeu radial qui subsiste sur le dessin).In the extreme tilted position shown in FIG. 1, in which the movable contact is in electrical contact with the terminal 6, the last turn 21 of the spring which applies to the bearing surfaces 16 of the arm 14, tends to strongly repel the arm 14 in the direction causing it to tilt further and applying an electrical contact force between the contact 12 and the terminal 6. It can be seen that the spring 20 works essentially in axial thrust under the effect of its compression, without being practically deformed laterally towards the left of the drawing due to the presence of the wall 17 of the well 18 (it should be understood that in reality, in the position shown, the lower end of the spring 20 would have applied against the wall 17, to the left after having canceled the small radial clearance which remains on the drawing).

Lorsqu'en appuyant sur la manette 3, on provoque le basculement de celle-ci vers l'autre position extrême, le basculement simultané de la paroi 17 entraîne pratiquement immédiatement le ressort et, de façon presque instantanée, l'intérieur des dernières spires du ressort vient en contact avec l'extrémité du prolongement 15 pour entraîner ce prolongement avec lui. La poursuite du mouvement de basculement simultané, en sens anti-horaire, de la manette et, en sens horaire, du contact basculant 12, s'effectue pendant que le ressort 20 se comprime davantage, opposant une force accrue au basculement, le ressort travaillant toujours en compression en étant empêché de se déformer latéralement par la présence de la paroi 17. Lorsqu'on arrive sensiblement dans la position intermédiaire médiane, on se trouve dans un état d'équilibre instable et on obtient rapidement un échappement ou déclic qui ramène alors le contact mobile dans sa seconde position basculée extrême symétrique de celle représentée sur le dessin et ceci de façon franche et sans rebond.When pressing the lever 3, it causes the tilting thereof to the other extreme position, the simultaneous tilting of the wall 17 almost immediately causes the spring and, almost instantaneously, the interior of the last turns of the spring comes into contact with the end of the extension 15 to drive this extension with it. The continuation of the simultaneous tilting movement, anti-clockwise, of the lever and, clockwise, of the rocking contact 12, takes place while the spring 20 compresses more, opposing an increased force to the tilting, the spring working always in compression, being prevented from deforming laterally by the presence of the wall 17. When one arrives appreciably in the middle intermediate position, one is in a state of unstable equilibrium and one quickly obtains an escape or click which then brings the movable contact in its second extreme tilted position symmetrical to that shown in the drawing and this frankly and without rebound.

A titre d'exemple, pour le ressort ayant les dimensions précitées, la hauteur du prolongement 15 peut avantageusement être de l'ordre de 0,8 mm, sa largeur à la base de l'ordre de 2,2 mm, sa largeur à l'extrémité de l'ordre de 1,9 mm, ceci pour une épaisseur de patte 14 de l'ordre de 0,6 mm.By way of example, for the spring having the aforementioned dimensions, the height of the extension 15 may advantageously be of the order of 0.8 mm, its width at the base of the order of 2.2 mm, its width at the end of the order of 1.9 mm, this for a tab thickness 14 of the order of 0.6 mm.

Claims (7)

1. A switch comprising, in a case (1) carrying the terminals (6, 7), an operating lever (3) pivoting about a central pin (4) between two extreme working positions, a movable contact (12) pivoting about a second pin (11) situated below the first and having a central arm (14) substantially aligned with the direction of said two pins when the movable contact is in an intermediate position, and a helical spring (20) applying a thrust to the free end of said central arm (14), said spring (20) being substantially aligned with said central arm in the direction joining said two pins when the movable contact and the operating lever are in an intermediate position, characterised in that said spring (20) is guided in the operating lever (3) in a bore (17) in this, with a slight clearance only permitting a very limited lateral deflection of the spring (20), and in that the end of the central arm (14) of the movable contact (12) has an extension (15) penetrating into the last turn of the spring (20) with sufficient play to allow the central arm to adopt the one or the other of the extreme positions in which it forms an angle with the longitudinal direction ofthe spring (20) without causing appreciable deformation of the end of the spring.
2. A switch according to Claim 1, characterised in that said lateral clearance between the outer turns of the spring and the wall of the bore is of the order of 3% of the external diameter of the spring.
3. A switch according to one of the Claims 1 and 2, characterised in that the spring (20) comprises a plurality of contiguous turns at its end orientated towards the central arm.
4. A switch according to Claim 3, characterised in that the spring comprises contiguous turns at its two ends.
5. A switch according to any one of the Claims 1 to 4, characterised in that the diametrical clearance between said extension (15) and the last turns of the spring is of the order of 8% of the diameter of the spring.
6. A switch according to any one of the claims 1 to 5, characterised in that said extension (15) of the central arm (14) has a chamfered shape becoming narrower towards its free end between supporting surfaces (16) against which the last turn of the spring (20) bears.
7. A switch according to any one of the Claims 1 to 6, characterised in that said spring (20) is held in the bore (17) by means of a boss (19) situated at the end of the bore.
EP84401057A 1983-05-25 1984-05-23 Tumbler switch Expired EP0130861B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84401057T ATE26042T1 (en) 1983-05-25 1984-05-23 TOGGLE SWITCH.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8308601 1983-05-25
FR8308601A FR2546661B1 (en) 1983-05-25 1983-05-25 ROCKER ELECTRIC SWITCH

Publications (2)

Publication Number Publication Date
EP0130861A1 EP0130861A1 (en) 1985-01-09
EP0130861B1 true EP0130861B1 (en) 1987-03-18

Family

ID=9289148

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84401057A Expired EP0130861B1 (en) 1983-05-25 1984-05-23 Tumbler switch

Country Status (5)

Country Link
EP (1) EP0130861B1 (en)
AT (1) ATE26042T1 (en)
DE (1) DE3462728D1 (en)
ES (1) ES285845U (en)
FR (1) FR2546661B1 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1028463B (en) * 1975-01-20 1979-01-30 Bassani Spa MECHANISM FOR ELECTRIC SWITCH THAT CAN BE USED BOTH WITH SWINGING LEVER CONTROL AND WITH BUTTON CONTROL
GB2052866B (en) * 1979-05-03 1983-12-07 Hoover Ltd Electric switch

Also Published As

Publication number Publication date
EP0130861A1 (en) 1985-01-09
ES285845U (en) 1986-03-01
DE3462728D1 (en) 1987-04-23
ATE26042T1 (en) 1987-04-15
FR2546661A1 (en) 1984-11-30
FR2546661B1 (en) 1986-02-21

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