EP2851917B1 - Limit switch - Google Patents

Limit switch Download PDF

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Publication number
EP2851917B1
EP2851917B1 EP14177485.1A EP14177485A EP2851917B1 EP 2851917 B1 EP2851917 B1 EP 2851917B1 EP 14177485 A EP14177485 A EP 14177485A EP 2851917 B1 EP2851917 B1 EP 2851917B1
Authority
EP
European Patent Office
Prior art keywords
head
passages
limit switch
switch according
support
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.)
Active
Application number
EP14177485.1A
Other languages
German (de)
French (fr)
Other versions
EP2851917A1 (en
Inventor
Nicolas Charollais
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.)
Schneider Electric Industries SAS
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Schneider Electric Industries SAS
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Filing date
Publication date
Application filed by Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP2851917A1 publication Critical patent/EP2851917A1/en
Application granted granted Critical
Publication of EP2851917B1 publication Critical patent/EP2851917B1/en
Active legal-status Critical Current
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • H01H21/02—Details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/0006—Apparatus or processes specially adapted for the manufacture of electric switches for converting electric switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • H01H21/02—Details
    • H01H21/18—Movable parts; Contacts mounted thereon
    • H01H21/22—Operating parts, e.g. handle
    • H01H21/24—Operating parts, e.g. handle biased to return to normal position upon removal of operating force
    • H01H21/28—Operating parts, e.g. handle biased to return to normal position upon removal of operating force adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift
    • H01H21/285—Operating parts, e.g. handle biased to return to normal position upon removal of operating force adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift having an operating arm actuated by the movement of the body and mounted on an axis converting its rotating movement into a rectilinear switch activating movement
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/16—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. for a door switch, a limit switch, a floor-levelling switch of a lift
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/032—Actuators adjustable

Definitions

  • the present invention relates to the field of sensors, more precisely sensors of the mechanical position switch type.
  • a position switch comprises a body, generally of parallelepipedal shape, and a removable and orientable head fixed on the body.
  • the body comprises a switching device and the head carries actuating means arranged to cooperate with the switching device.
  • the actuating means comprise an actuating member such as for example a lever or a pusher.
  • the detection of a movement of an object is performed by mechanical actuation of the actuating member.
  • a position switch is fixed on a support (or frame) and positioned so that its actuator is in the path of the object whose displacement is to be detected.
  • the contact between the object and the head is the source of strong constraints on the head. These constraints are sometimes higher than the recommendations of the manufacturer.
  • the head may have to withstand forces of up to 50N pusher version and 0.50 N.M lever version.
  • the body and the head must be made in two separate parts.
  • this two-part architecture weakens the position switch, the head can break relative to the body when the applied stresses are too important or unsuitable.
  • the object of the invention is to provide a position switch having an architecture that can withstand the high stresses likely to be applied on its head.
  • the first passages comprise grooves made on the head, perpendicular to the main axis.
  • the second passages comprise orifices made on the head, perpendicular to the main axis.
  • the fasteners comprise two screws, each being inserted into one of the first two passages or in one of the two second passages.
  • the two screws are secured to each other by means of a spacer.
  • the fastening elements comprise a jumper having two free ends each being inserted in one of the first two passages or in one of the two second passages.
  • the actuating means comprise an actuating member formed of a pivoting lever, an axial movement pusher, or a flexible rod.
  • the head and the body comprise complementary positioning elements arranged to allow the head to take said several angular positions distinct from the body.
  • the switching device is attached to the head.
  • a position switch as shown in the accompanying figures, comprises a body 1, preferably of parallelepiped shape.
  • the body thus comprises an upper face, a lower face and four lateral faces, defined with respect to a main axis (X).
  • X main axis
  • the cross section of the body 1 is square.
  • the position switch has an output connector 10 for connection to a cable.
  • the position switch also comprises a head 2 attached to the upper face of the body 1.
  • the head 2 is removable relative to the body 1.
  • the body and the head comprise complementary positioning and assembly elements.
  • the positioning elements comprise for example four pads 20 made on the head transversely to the assembly plane and arranged to cooperate with four complementary recesses made on the upper face of the body 1 of the switch.
  • the assembly elements comprise, for example, screws 3 which are inserted through the lower face of the body 1 and through the body in the axial direction, the end of each screw being housed in an orifice 26 of the head 2 ( figure 9 ).
  • the assembly screws 3 pass through the body 1 in the axial direction, for example by following two opposite lateral edges of said body 1.
  • the body 1 encloses an electric switching device 4 ( figure 9 ) and the head 2 comprises actuating means (not visible in the figures) arranged to cooperate with the switching device 4.
  • the switching device 4 is first attached to the head 2 before being covered by the body 1.
  • Specific hooking means 27 are provided under the head 2 to hook the switching device 4.
  • the means of actuation comprise an actuating member such as for example a lever 21, a pusher or a flexible rod operable mechanically by displacement of an object. The movement of the actuator causes a change of state of the switching device. An electrical signal is transmitted by the switch when the switching device 4 is in the closed state.
  • the actuating member consists of a lever 21 actuatable in rotation by an object.
  • This lever 21 is fixed on an axis of rotation housed in the head and perpendicular to the main axis.
  • a cam mechanism is arranged in the head 2 to transform the rotational movement of the axis of rotation into an axial translation movement of a pusher, translational movement which controls the switching device 4.
  • the head 2 is removable relative to the body 1 by unscrewing the assembly screws 3.
  • the head 2 can thus be easily replaced.
  • the symmetrical configuration of the body 1 and positioning elements allows the head 2 to take different angular positions around the main axis (X).
  • the positioning elements being four in number and distributed in square, the head can thus take four distinct angular positions around the main axis (X), offset from each other by an angle of 90 °.
  • a greater number of positioning elements staggered together at a constant pitch would allow the head to take more than four distinct angular positions.
  • the fixing of the switch on a support S is carried out only by the head 2.
  • the position switch comprises fixing means arranged to fix the switch on the support S by its head only.
  • the body 1 is therefore free of fixing means on the support.
  • the fastening means may be various. Examples are given in the accompanying figures and described below.
  • the head 2 has at least two separate bearing planes and said fixing means are arranged to fix the head 2 in abutment against the support S according to one or other of its two bearing planes .
  • the head 2 is oriented in the same way with respect to the body 1.
  • the position switch is intended to be fixed on the support by a first support plane and on the figure 3 , the position switch is intended to be fixed on the support via a second support plane, separate from the first support plane.
  • the fixing means are arranged to allow attachment of the head along four separate support planes. Said support planes are defined by the shape of the cross section of the head. In the accompanying figures, the cross section forming a quadrilateral, the head thus has four separate support planes, offset from each other by 90 °.
  • the fixing means comprise transverse passages made on the head and fastening elements coming into said passages to assemble the head 2 on the support S.
  • first passages are made in a first transverse direction, perpendicular to the first bearing plane
  • second passages are made in a second transverse direction, perpendicular to the second bearing plane.
  • the first passages consist for example of two grooves 22 parallel and symmetrical with respect to the main axis.
  • the second passages consist of two orifices 23 parallel and symmetrical with respect to the main axis (X).
  • the two orifices 23 are thus drilled along the other two parallel sides of the head.
  • the first passages consist of two parallel and symmetrical orifices 220, replacing the two grooves 22.
  • the second passages also consist of two orifices 230 parallel and symmetrical with respect to the main axis (X).
  • the fastening means also comprise fastening elements such as for example two screws 24, independent or interconnected, or a jumper 25 with two free ends, said fasteners being adapted to fit into the first passages or the second passages of the head to fix the position switch on its support S.
  • the figure 5 shows a solution in which two screws 24 are secured together by a spacer 240 and are inserted in two passages of the head 2.
  • the figure 6 shows another solution employing a jumper 25 to fit into two passages of the head 2. Of course, any other fastener could be used.
  • the fastening means are thus made in two distinct non-parallel transverse directions so as to fix the head 2 on the support S according to its two support planes defined above.
  • the head can thus be fixed on its support in four support planes, parallel in pairs.
  • the four support planes follow the four lateral faces of the body of the switch.
  • the head 2 is first fixed on the support S by the fixing means, then the switching device 4 is fixed to the head (as shown in FIG. figure 9 ). The switching device 4 is then wired and then covered by the body 1.
  • the solution for fixing the position switch by the head 2 makes it possible to reinforce the robustness of the switch while preserving the previous advantages, such as the possibility of giving the head distinct orientations with respect to the object to be detected. .
  • the body 1 can be detached from the head to be replaced or reoriented relative to the head 2.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Switches With Compound Operations (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Description

Domaine technique de l'inventionTechnical field of the invention

La présente invention se rapporte au domaine des capteurs, plus précisément des capteurs de type interrupteur de position mécanique.The present invention relates to the field of sensors, more precisely sensors of the mechanical position switch type.

Etat de la techniqueState of the art

De manière connue, un interrupteur de position comporte un corps, généralement de forme parallélépipédique, et une tête amovible et orientable fixée sur le corps. Le corps comporte un dispositif de commutation et la tête porte des moyens d'actionnement agencés pour coopérer avec le dispositif de commutation. Les moyens d'actionnement comportent un organe d'actionnement tel que par exemple un levier ou un poussoir. La détection d'un mouvement d'un objet est réalisée par actionnement mécanique de l'organe d'actionnement. Les brevets FR2134814 et US4133991 décrivent un interrupteur de position tel qu'il est connu dans l'état de la technique. Les demandes EP1276124A2 et EP1876616A2 décrivent également des solutions de l'état de l'état de la technique.In known manner, a position switch comprises a body, generally of parallelepipedal shape, and a removable and orientable head fixed on the body. The body comprises a switching device and the head carries actuating means arranged to cooperate with the switching device. The actuating means comprise an actuating member such as for example a lever or a pusher. The detection of a movement of an object is performed by mechanical actuation of the actuating member. Licences FR2134814 and US4133991 describe a position switch as known in the state of the art. The requests EP1276124A2 and EP1876616A2 also describe solutions of the state of the art.

Aujourd'hui, un interrupteur de position est fixé sur un support (ou châssis) et positionné de manière à ce que son organe d'actionnement se trouve sur le chemin de l'objet dont le déplacement est à détecter. Le contact entre l'objet et la tête est la source de fortes contraintes sur la tête. Ces contraintes sont parfois supérieures aux préconisations du fabricant. Ainsi la tête peut avoir à supporter des efforts allant jusqu'à 50N en version poussoir et 0.50 N.M en version levier.Today, a position switch is fixed on a support (or frame) and positioned so that its actuator is in the path of the object whose displacement is to be detected. The contact between the object and the head is the source of strong constraints on the head. These constraints are sometimes higher than the recommendations of the manufacturer. Thus the head may have to withstand forces of up to 50N pusher version and 0.50 N.M lever version.

Pour satisfaire la modularité et la fonction orientable de la tête par rapport au corps, nécessaires pour s'adapter à tous supports, le corps et la tête doivent être réalisés en deux pièces distinctes. Cependant, cette architecture en deux parties fragilise l'interrupteur de position, la tête pouvant se casser par rapport au corps lorsque les contraintes appliquées sont trop importantes ou inadaptées.To satisfy the modularity and the orientable function of the head relative to the body, necessary to adapt to all supports, the body and the head must be made in two separate parts. However, this two-part architecture weakens the position switch, the head can break relative to the body when the applied stresses are too important or unsuitable.

Le but de l'invention est de proposer un interrupteur de position présentant une architecture pouvant résister aux fortes contraintes susceptibles de s'appliquer sur sa tête.The object of the invention is to provide a position switch having an architecture that can withstand the high stresses likely to be applied on its head.

Exposé de l'inventionPresentation of the invention

Ce but est atteint par un interrupteur de position comprenant :

  • un corps réalisé suivant un axe principal et renfermant un dispositif de commutation,
  • une tête amovible et orientable par rapport au corps de manière à prendre plusieurs positions angulaires distinctes autour de l'axe principal, ladite tête comprenant des moyens d'actionnement agencés pour agir sur le dispositif de commutation,
  • des moyens de fixation de l'interrupteur de position sur un support,
  • les moyens de fixation étant agencés uniquement sur la tête de l'interrupteur de position,
  • la tête présentant au moins deux plans d'appui distincts, lesdits moyens de fixation étant agencés pour fixer la tête en appui contre le support selon l'un ou l'autre de ses deux plans d'appui.
This object is achieved by a position switch comprising:
  • a body made along a main axis and enclosing a switching device,
  • a head that is removable and orientable with respect to the body so as to take several distinct angular positions around the main axis, said head comprising actuating means arranged to act on the switching device,
  • means for fixing the position switch on a support,
  • the fixing means being arranged solely on the head of the position switch,
  • the head having at least two separate support planes, said fixing means being arranged to fix the head bearing against the support according to one or other of its two support planes.

Selon une particularité, les moyens de fixation comportent :

  • deux premiers passages réalisés sur la tête suivant une première direction transversale et deux deuxièmes passages réalisés sur la tête suivant une deuxième direction transversale, distincte de la première direction transversale,
  • des éléments de fixation agencés pour s'insérer dans les deux premiers passages pour fixer la tête en appui contre le support suivant son premier plan d'appui ou pour s'insérer dans les deux deuxièmes passages pour fixer la tête en appui contre le support suivant son deuxième plan d'appui.
According to a particularity, the fixing means comprise:
  • first two passages made on the head in a first transverse direction and two second passages made on the head in a second transverse direction, distinct from the first transverse direction,
  • fastening elements arranged to fit into the first two passages to fix the head bearing against the support along its first support plane or to fit into the two second passages to fix the head bearing against the next support his second support plan.

Selon une autre particularité, les premiers passages comprennent des gorges réalisées sur la tête, perpendiculairement à l'axe principal.According to another feature, the first passages comprise grooves made on the head, perpendicular to the main axis.

Selon une autre particularité, les deuxièmes passages comprennent des orifices réalisés sur la tête, perpendiculairement à l'axe principal.According to another feature, the second passages comprise orifices made on the head, perpendicular to the main axis.

Selon une autre particularité, les éléments de fixation comportent deux vis, venant s'insérer chacune dans l'un des deux premiers passages ou dans l'un des deux deuxièmes passages.According to another feature, the fasteners comprise two screws, each being inserted into one of the first two passages or in one of the two second passages.

Selon une autre particularité, les deux vis sont solidarisées entre elles à l'aide d'une entretoise.According to another feature, the two screws are secured to each other by means of a spacer.

Selon une autre particularité, les éléments de fixation comportent un cavalier présentant deux extrémités libres venant s'insérer chacune dans l'un des deux premiers passages ou dans l'un des deux deuxièmes passages.According to another feature, the fastening elements comprise a jumper having two free ends each being inserted in one of the first two passages or in one of the two second passages.

Selon une autre particularité, les moyens d'actionnement comportent un organe d'actionnement formé d'un levier pivotant, d'un poussoir à mouvement axial, ou d'une tige souple.According to another feature, the actuating means comprise an actuating member formed of a pivoting lever, an axial movement pusher, or a flexible rod.

Selon une autre particularité, la tête et le corps comportent des éléments de positionnement complémentaires agencés pour permettre à la tête de prendre lesdites plusieurs positions angulaires distinctes par rapport au corps.According to another feature, the head and the body comprise complementary positioning elements arranged to allow the head to take said several angular positions distinct from the body.

Selon une autre particularité, le dispositif de commutation est fixé à la tête.In another feature, the switching device is attached to the head.

Brève description des figuresBrief description of the figures

D'autres caractéristiques et avantages vont apparaître dans la description détaillée qui suit faite en regard des dessins annexés dans lesquels :

  • les figures 1 à 6 représentent l'interrupteur de position de l'invention selon différentes configurations,
  • les figures 7A à 7C représentent la tête de l'interrupteur de position de l'invention selon un premier mode de réalisation,
  • les figures 8A à 8C représentent la tête de l'interrupteur de position de l'invention selon un deuxième mode de réalisation,
  • la figure 9 représente la tête de l'interrupteur de position de l'invention, sur laquelle est fixé le dispositif de commutation.
Other features and advantages will appear in the following detailed description with reference to the accompanying drawings in which:
  • the Figures 1 to 6 represent the position switch of the invention according to different configurations,
  • the Figures 7A to 7C represent the head of the position switch of the invention according to a first embodiment,
  • the Figures 8A to 8C represent the head of the position switch of the invention according to a second embodiment,
  • the figure 9 represents the head of the position switch of the invention, on which is fixed the switching device.

Description détaillée d'au moins un mode de réalisationDetailed description of at least one embodiment

L'invention concerne un interrupteur de position mécanique. Un interrupteur de position, tel que représenté sur les figures annexées, comporte un corps 1, préférentiellement de forme parallélépipédique. Le corps comporte ainsi une face supérieure, une face inférieure et quatre faces latérales, définies par rapport à un axe principal (X). Préférentiellement, la section transversale du corps 1 est de forme carrée. Sur la face inférieure, l'interrupteur de position comporte un connecteur 10 de sortie destiné à être relié à un câble. L'interrupteur de position comporte également une tête 2 rapportée sur la face supérieure du corps 1. La tête 2 est amovible par rapport au corps 1. Le corps et la tête comportent des éléments complémentaires de positionnement et d'assemblage. Les éléments de positionnement comportent par exemple quatre plots 20 réalisés sur la tête transversalement au plan d'assemblage et agencés pour coopérer avec quatre évidements complémentaires réalisés sur la face supérieure du corps 1 de l'interrupteur. Les éléments d'assemblage comportent par exemple des vis 3 venant s'insérer par la face inférieure du corps 1 et traversant le corps dans la direction axiale, l'extrémité de chaque vis venant se loger dans un orifice 26 de la tête 2 (figure 9). Les vis d'assemblage 3 traversent le corps 1 dans le sens axial, par exemple en suivant deux arêtes latérales opposées dudit corps 1.The invention relates to a mechanical position switch. A position switch, as shown in the accompanying figures, comprises a body 1, preferably of parallelepiped shape. The body thus comprises an upper face, a lower face and four lateral faces, defined with respect to a main axis (X). Preferably, the cross section of the body 1 is square. On the underside, the position switch has an output connector 10 for connection to a cable. The position switch also comprises a head 2 attached to the upper face of the body 1. The head 2 is removable relative to the body 1. The body and the head comprise complementary positioning and assembly elements. The positioning elements comprise for example four pads 20 made on the head transversely to the assembly plane and arranged to cooperate with four complementary recesses made on the upper face of the body 1 of the switch. The assembly elements comprise, for example, screws 3 which are inserted through the lower face of the body 1 and through the body in the axial direction, the end of each screw being housed in an orifice 26 of the head 2 ( figure 9 ). The assembly screws 3 pass through the body 1 in the axial direction, for example by following two opposite lateral edges of said body 1.

De manière connue, le corps 1 renferme un dispositif de commutation 4 électrique (figure 9) et la tête 2 comporte des moyens d'actionnement (non visibles sur les figures) agencés pour coopérer avec le dispositif de commutation 4. Comme représenté sur la figure 9, le dispositif de commutation 4 est d'abord fixé à la tête 2 avant d'être recouvert par le corps 1. Des moyens d'accrochage 27 spécifiques sont prévus sous la tête 2 pour accrocher le dispositif de commutation 4. Les moyens d'actionnement comportent un organe d'actionnement tel que par exemple un levier 21, un poussoir ou une tige souple actionnable mécaniquement par déplacement d'un objet. Le mouvement de l'organe d'actionnement entraîne un changement d'état du dispositif de commutation. Un signal électrique est transmis par l'interrupteur lorsque le dispositif de commutation 4 est à l'état de fermeture. Selon la configuration de l'interrupteur de position (normalement ouvert ou normalement fermé), le signal électrique sera transmis lorsque l'organe d'actionnement est en position de repos ou en position actionnée. Sur les figures annexées, l'organe d'actionnement se compose d'un levier 21 actionnable en rotation par un objet. Ce levier 21 est fixé sur un axe de rotation logé dans la tête et perpendiculaire à l'axe principal. Généralement, un mécanisme de cames est agencé dans la tête 2 pour transformer le mouvement de rotation de l'axe de rotation en un mouvement de translation axial d'un poussoir, mouvement de translation qui contrôle le dispositif de commutation 4. Le fonctionnement d'un interrupteur de position étant largement connu, celui-ci ne sera pas décrit plus en détails.In known manner, the body 1 encloses an electric switching device 4 ( figure 9 ) and the head 2 comprises actuating means (not visible in the figures) arranged to cooperate with the switching device 4. As shown in FIG. figure 9 , the switching device 4 is first attached to the head 2 before being covered by the body 1. Specific hooking means 27 are provided under the head 2 to hook the switching device 4. The means of actuation comprise an actuating member such as for example a lever 21, a pusher or a flexible rod operable mechanically by displacement of an object. The movement of the actuator causes a change of state of the switching device. An electrical signal is transmitted by the switch when the switching device 4 is in the closed state. Depending on the configuration of the position switch (normally open or normally closed), the electrical signal will be transmitted when the actuating member is in the rest position or in the actuated position. In the appended figures, the actuating member consists of a lever 21 actuatable in rotation by an object. This lever 21 is fixed on an axis of rotation housed in the head and perpendicular to the main axis. Generally, a cam mechanism is arranged in the head 2 to transform the rotational movement of the axis of rotation into an axial translation movement of a pusher, translational movement which controls the switching device 4. The operation of a position switch being widely known, it will not be described in more detail.

De manière connue, la tête 2 est amovible par rapport au corps 1 en dévissant les vis d'assemblage 3. La tête 2 peut ainsi être aisément remplacée. Par ailleurs, la configuration symétrique du corps 1 et des éléments de positionnement (plots 20 et évidements complémentaires) permet à la tête 2 de prendre différentes positions angulaires autour de l'axe principal (X). Les éléments de positionnement étant au nombre de quatre et répartis en carré, la tête peut ainsi prendre quatre positions angulaires distinctes autour de l'axe principal (X), décalées entre elles d'un angle de 90°. Bien entendu, un plus grand nombre d'éléments de positionnement décalés entre eux d'un pas constant permettrait à la tête de prendre plus de quatre positions angulaires distinctes.In known manner, the head 2 is removable relative to the body 1 by unscrewing the assembly screws 3. The head 2 can thus be easily replaced. Moreover, the symmetrical configuration of the body 1 and positioning elements (pads 20 and complementary recesses) allows the head 2 to take different angular positions around the main axis (X). The positioning elements being four in number and distributed in square, the head can thus take four distinct angular positions around the main axis (X), offset from each other by an angle of 90 °. Of course, a greater number of positioning elements staggered together at a constant pitch would allow the head to take more than four distinct angular positions.

Selon l'invention, la fixation de l'interrupteur sur un support S (ou châssis) n'est réalisée que par la tête 2. Selon l'invention, l'interrupteur de position comporte des moyens de fixation agencés pour fixer l'interrupteur sur le support S par sa tête uniquement. Le corps 1 est donc exempt de moyens de fixation sur le support. Les moyens de fixation peuvent être divers. Des exemples sont donnés sur les figures annexées et décrits ci-dessous.According to the invention, the fixing of the switch on a support S (or chassis) is carried out only by the head 2. According to the invention, the position switch comprises fixing means arranged to fix the switch on the support S by its head only. The body 1 is therefore free of fixing means on the support. The fastening means may be various. Examples are given in the accompanying figures and described below.

Selon l'invention, la tête 2 présente au moins deux plans d'appui distincts et lesdits moyens de fixation sont agencés pour fixer la tête 2 en appui contre le support S selon l'un ou l'autre de ses deux plans d'appui. Sur les figures 2 et 3, la tête 2 est orientée de la même manière par rapport au corps 1. Sur la figure 2, l'interrupteur de position est destiné à être fixé sur le support par un premier plan d'appui et sur la figure 3, l'interrupteur de position est destiné à être fixé sur le support par l'intermédiaire d'un deuxième plan d'appui, distinct du premier plan d'appui. Préférentiellement, les moyens de fixation sont agencés pour permettre une fixation de la tête suivant quatre plans d'appui distincts. Lesdits plans d'appui sont définis par la forme de la section transversale de la tête. Sur les figures annexées, la section transversale formant un quadrilatère, la tête présente ainsi quatre plans d'appui distincts, décalés l'un de l'autre de 90°.According to the invention, the head 2 has at least two separate bearing planes and said fixing means are arranged to fix the head 2 in abutment against the support S according to one or other of its two bearing planes . On the Figures 2 and 3 , the head 2 is oriented in the same way with respect to the body 1. On the figure 2 , the position switch is intended to be fixed on the support by a first support plane and on the figure 3 , the position switch is intended to be fixed on the support via a second support plane, separate from the first support plane. Preferably, the fixing means are arranged to allow attachment of the head along four separate support planes. Said support planes are defined by the shape of the cross section of the head. In the accompanying figures, the cross section forming a quadrilateral, the head thus has four separate support planes, offset from each other by 90 °.

Selon l'invention, les moyens de fixation comportent des passages transversaux réalisés sur la tête et des éléments de fixation venant s'insérer dans lesdits passages pour venir assembler la tête 2 sur le support S. Pour assurer une fixation suivant lesdits deux plans d'appui, des premiers passages sont réalisés suivant une première direction transversale, perpendiculairement au premier plan d'appui, et des deuxièmes passages sont réalisés suivant une deuxième direction transversale, perpendiculairement au deuxième plan d'appui.According to the invention, the fixing means comprise transverse passages made on the head and fastening elements coming into said passages to assemble the head 2 on the support S. To ensure a fixation along said two planes support, first passages are made in a first transverse direction, perpendicular to the first bearing plane, and second passages are made in a second transverse direction, perpendicular to the second bearing plane.

Comme représenté sur les figures 7A à 7C, les premiers passages sont par exemple constitués de deux gorges 22 parallèles et symétriques par rapport à l'axe principal. Les deuxièmes passages sont constitués de deux orifices 23 parallèles et symétriques par rapport à l'axe principal (X). Les deux orifices 23 sont ainsi percés suivant les deux autres côtés parallèles de la tête. Dans une variante de réalisation représentée sur les figures 8A à 8C, les premiers passages sont constitués de deux orifices 220 parallèles et symétriques, remplaçant les deux gorges 22. Les deuxièmes passages sont également constitués de deux orifices 230 parallèles et symétriques par rapport à l'axe principal (X).As shown on Figures 7A to 7C the first passages consist for example of two grooves 22 parallel and symmetrical with respect to the main axis. The second passages consist of two orifices 23 parallel and symmetrical with respect to the main axis (X). The two orifices 23 are thus drilled along the other two parallel sides of the head. In an alternative embodiment shown on the Figures 8A to 8C , the first passages consist of two parallel and symmetrical orifices 220, replacing the two grooves 22. The second passages also consist of two orifices 230 parallel and symmetrical with respect to the main axis (X).

Les moyens de fixation comportent également des éléments de fixation tels que par exemple deux vis 24, indépendantes ou solidarisées entre elles, ou un cavalier 25 à deux extrémités libres, lesdits éléments de fixation étant adaptés pour venir s'insérer dans les premiers passages ou les deuxièmes passages de la tête en vue de fixer l'interrupteur de position sur son support S. La figure 5 montre une solution dans laquelle les deux vis 24 sont solidarisées entre elles par une entretoise 240 et viennent s'insérer dans deux passages de la tête 2. La figure 6 montre une autre solution employant un cavalier 25 venant s'insérer dans deux passages de la tête 2. Bien entendu, tout autre élément de fixation pourrait être employé.The fastening means also comprise fastening elements such as for example two screws 24, independent or interconnected, or a jumper 25 with two free ends, said fasteners being adapted to fit into the first passages or the second passages of the head to fix the position switch on its support S. The figure 5 shows a solution in which two screws 24 are secured together by a spacer 240 and are inserted in two passages of the head 2. The figure 6 shows another solution employing a jumper 25 to fit into two passages of the head 2. Of course, any other fastener could be used.

Les moyens de fixation sont ainsi réalisés suivant deux directions transversales distinctes non parallèles de manière à pouvoir fixer la tête 2 sur le support S suivant ses deux plans d'appui définis ci-dessus. Comme les éléments de fixation peuvent être insérés dans les deux sens suivant une même direction transversale, la tête peut ainsi se fixer sur son support suivant quatre plans d'appui, parallèles deux à deux. Les quatre plans d'appui suivent les quatre faces latérales du corps de l'interrupteur. Une fois la tête 2 fixée sur le support S, il est possible d'enlever le corps 1 et de le tourner par rapport à la tête 2, ce qui présente un intérêt pour orienter la sortie d'un connecteur coudé. Par ailleurs, comme décrit précédemment, la fixation par la tête 2 uniquement permet de rigidifier l'architecture de l'interrupteur, les contraintes exercées sur la tête 2 n'étant pas absorbées par sa liaison avec le corps 1 mais par sa liaison, bien plus solide, avec le support S.The fastening means are thus made in two distinct non-parallel transverse directions so as to fix the head 2 on the support S according to its two support planes defined above. As the fasteners can be inserted in both directions in the same transverse direction, the head can thus be fixed on its support in four support planes, parallel in pairs. The four support planes follow the four lateral faces of the body of the switch. Once the head 2 fixed on the support S, it is possible to remove the body 1 and turn it relative to the head 2, which is of interest for directing the output of a bent connector. Furthermore, as described above, the fixing by the head 2 only makes it possible to stiffen the architecture of the switch, the stresses exerted on the head 2 not being absorbed by its connection with the body 1 but by its connection, although more solid, with the support S.

Lors du montage, la tête 2 est d'abord fixée sur le support S par les moyens de fixation, puis le dispositif de commutation 4 est fixé à la tête (comme représenté sur la figure 9). Le dispositif de commutation 4 est ensuite câblé puis recouvert par le corps 1.During assembly, the head 2 is first fixed on the support S by the fixing means, then the switching device 4 is fixed to the head (as shown in FIG. figure 9 ). The switching device 4 is then wired and then covered by the body 1.

La solution de fixation de l'interrupteur de position par la tête 2 permet de renforcer la robustesse de l'interrupteur tout en conservant les avantages antérieurs, tels que la possibilité de donner à la tête des orientations distinctes par rapport à l'objet à détecter. En outre, une fois la tête 2 fixée, le corps 1 pourra être désolidarisé de la tête pour être remplacé ou réorienté par rapport à la tête 2.The solution for fixing the position switch by the head 2 makes it possible to reinforce the robustness of the switch while preserving the previous advantages, such as the possibility of giving the head distinct orientations with respect to the object to be detected. . In addition, once the head 2 fixed, the body 1 can be detached from the head to be replaced or reoriented relative to the head 2.

Claims (10)

  1. Limit switch comprising:
    - a body (1) produced along a main axis (X) and containing a switching device,
    - a head (2) that is removable and orientable with respect to the body (1) so that it can adopt several distinct angular positions about the main axis (X), said head (2) comprising actuating means arranged to act on the switching device,
    - fixing means for fixing the limit switch to a support (S),
    characterized in that:
    - the fixing means are arranged only on the head (2) of the limit switch,
    - the head (2) has at least two separate bearing planes, said fixing means being arranged to fix the head so that it bears against the support via one or other of its two bearing planes.
  2. Limit switch according to Claim 1, characterized in that the fixing means comprise:
    - two first passages produced on the head (2) in a first transverse direction and two second passages produced on the head in a second transverse direction,
    - fixing elements arranged to become inserted in the two first passages so as to fix the head (2) so that it bears against the support (S) via its first bearing plane or so as to become inserted in the two second passages so as to fix the head (2) so that it bears against the support via its second bearing plane.
  3. Limit switch according to Claim 2, characterized in that the first passages comprise grooves (22) produced on the head at right angles to the main axis (X).
  4. Limit switch according to Claim 2 or 3, characterized in that the second passages comprise orifices (23) produced on the head (2) at right angles to the main axis (X).
  5. Limit switch according to one of Claims 2 to 4, characterized in that the fixing elements comprise two screws (24) each of which becomes inserted in one of the two first passages or in one of the two second passages.
  6. Limit switch according to Claim 5, characterized in that the two screws (24) are joined together by a spacer (240).
  7. Limit switch according to one of Claims 2 to 4, characterized in that the fixing elements comprise a staple (25) having two free ends each of which becomes inserted in one of the two first passages or in one of the two second passages.
  8. Limit switch according to one of Claims 1 to 7, characterized in that the actuating means comprise an actuating member formed of a pivoting lever (21), of an axially moveable press rod or of a flexible stem.
  9. Limit switch according to one of Claims 1 to 8, characterized in that the head (2) and the body (1) comprise complementary positioning elements (20) arranged to allow the head (2) to adopt said several distinct angular positions with respect to the body (1).
  10. Limit switch according to one of Claims 1 to 9, characterized in that the switching device is fixed to the head (2).
EP14177485.1A 2013-09-19 2014-07-17 Limit switch Active EP2851917B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1359015A FR3010826B1 (en) 2013-09-19 2013-09-19 POSITION SWITCH

Publications (2)

Publication Number Publication Date
EP2851917A1 EP2851917A1 (en) 2015-03-25
EP2851917B1 true EP2851917B1 (en) 2018-01-31

Family

ID=49713246

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14177485.1A Active EP2851917B1 (en) 2013-09-19 2014-07-17 Limit switch

Country Status (4)

Country Link
US (1) US9281143B2 (en)
EP (1) EP2851917B1 (en)
CN (1) CN104465191B (en)
FR (1) FR3010826B1 (en)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3578932A (en) * 1968-06-17 1971-05-18 Robertshaw Controls Co Reversibly mountable limit switch construction
FR2134814A5 (en) 1971-04-21 1972-12-08 Telemecanique Electrique
JPS5340870A (en) 1976-09-27 1978-04-13 Matsushita Electric Works Ltd Electric switch
JPH0574271A (en) * 1991-09-14 1993-03-26 Omron Corp Limit switch
US6664487B2 (en) * 2001-07-10 2003-12-16 Omron Corporation Limit switches
FR2830981B1 (en) * 2001-10-15 2004-10-15 Schneider Electric Ind Sa SWITCH, ESPECIALLY POSITIONING, WITH ADJUSTABLE HEAD
ITVI20060211A1 (en) * 2006-07-07 2008-01-08 Pizzato Elettrica Srl RESET DEVICE FOR LIMIT SWITCH AND LIMIT SWITCH INCLUDING THIS DEVICE
CN102956393A (en) * 2011-08-24 2013-03-06 欧姆龙株式会社 Switching device
CN202855599U (en) * 2012-07-12 2013-04-03 浙江吉润汽车有限公司 Travel switch which is convenient to install

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
FR3010826B1 (en) 2017-04-21
US20150075952A1 (en) 2015-03-19
CN104465191B (en) 2016-10-19
FR3010826A1 (en) 2015-03-20
US9281143B2 (en) 2016-03-08
CN104465191A (en) 2015-03-25
EP2851917A1 (en) 2015-03-25

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