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EP1889275B1 - Schalteinrichtung einer elektrischen schaltung mit einem beweglichen toroidmagneten - Google Patents

Schalteinrichtung einer elektrischen schaltung mit einem beweglichen toroidmagneten Download PDF

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Publication number
EP1889275B1
EP1889275B1 EP06763489A EP06763489A EP1889275B1 EP 1889275 B1 EP1889275 B1 EP 1889275B1 EP 06763489 A EP06763489 A EP 06763489A EP 06763489 A EP06763489 A EP 06763489A EP 1889275 B1 EP1889275 B1 EP 1889275B1
Authority
EP
European Patent Office
Prior art keywords
permanent magnet
actuating button
moving
switch
main axis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP06763489A
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English (en)
French (fr)
Other versions
EP1889275A1 (de
Inventor
Dominique Benni
Laurent Chiesi
Benoît Grappe
Mathias Lamien
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
Original Assignee
Schneider Electric Industries SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP1889275A1 publication Critical patent/EP1889275A1/de
Application granted granted Critical
Publication of EP1889275B1 publication Critical patent/EP1889275B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
    • H01H36/0006—Permanent magnet actuating reed switches
    • H01H36/004—Permanent magnet actuating reed switches push-button-operated, e.g. for keyboards
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H01H5/02—Energy stored by the attraction or repulsion of magnetic parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
    • H01H2036/0093—Micromechanical switches actuated by a change of the magnetic field
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
    • H01H36/0006—Permanent magnet actuating reed switches
    • H01H36/006—Permanent magnet actuating reed switches comprising a plurality of reed switches, e.g. selectors or joystick-operated

Definitions

  • the present invention relates to a switching device of an electrical circuit comprising an actuating button movable in translation, acting by magnetic effect on a switch to switch the electrical circuit.
  • the invention more particularly relates to a switching device that can be used as a pushbutton or position switch.
  • He is known by the patent US 3,921,108 a push button-type assembly comprising an actuating member movable in translation between a rest position and a working position and able to set in motion a permanent magnet housed in the push-button.
  • the permanent magnet is mounted on a curved leaf spring on which the actuating member acts.
  • the permanent magnet is capable of controlling a switch by magnetic effect to switch an electrical circuit. The position of the permanent magnet relative to the switch makes it possible to close or open the electrical circuit.
  • the actuating member is at rest, the permanent magnet is away from the switch and has no influence on it, the electric circuit is open.
  • the actuating member is depressed, the permanent magnet is approached from the switch, bringing two flexible blades of the switch closer together and thus closing the electrical circuit.
  • the document US 3,283,274 discloses a push-button type switching device comprising a reed switch also called “reed” operated by an annular mobile permanent magnet secured to an actuating button.
  • the pressure on the actuating button makes it possible to drive the moving permanent magnet in translation around the reed switch to a position in which, by a magnetic effect, it causes the two flexible blades to be brought together to drive the closing an electrical circuit.
  • the return to the initial position of the actuating button can be achieved by disposing an annular fixed permanent magnet in opposition to the moving permanent magnet.
  • the document US3260821 discloses a push-button type switch which comprises a magnetic "reed" type sensor, an actuating rod carrying a first torus-shaped magnet surrounding the sensor and movable between two positions to change the state of the sensor and a second permanent magnet in magnetic coupling with a fixed permanent magnet shaped torus to ensure the return to position of the actuating rod.
  • the fixed permanent magnet is for example in the form of a torus while the second movable permanent magnet is inserted into the fixed permanent magnet for ensure the return to position of the actuating rod.
  • the document US3452307 describes a switching device comprising a rod on which is fixed a pair of permanent magnets, and two "reed" type switches positioned outside the device. This type of switch switches when approaching a permanent magnet. Therefore, in the rest position, the magnet must be sufficiently far from the switch not to cause its switching. This results in space constraints in height or length.
  • the object of the invention is to provide a switching device of an electrical circuit adapted to switch miniature switches and having a compact structure, simple operation and giving the user a significant tactile effect.
  • the moving permanent magnet and the fixed permanent magnet have different dimensions, preferably just sufficient to obtain easy sliding of one of the magnets with respect to the other. These dimensions are determined so as to obtain by simple arrangement between the magnets, a sudden transformation effect, also called blistering effect, when the actuating button is depressed.
  • the moving permanent magnet is a torus and the fixed permanent magnet is a disk.
  • the disk-shaped fixed permanent magnet has an outer diameter smaller than the internal diameter of the torus formed by the permanent magnet movable so as to be circumscribed by the movable permanent magnet.
  • the movable permanent magnet and the fixed permanent magnet are each in the shape of a torus.
  • One torus then has an outer diameter less than the inner diameter of the other torus.
  • the fixed permanent magnet has an outer diameter smaller than the internal diameter of the moving permanent magnet.
  • annular fixed ferromagnetic piece is mounted on the body around the fixed permanent magnet.
  • the ferromagnetic part has for example a diameter substantially greater than the outer diameter of the movable permanent magnet. This ferromagnetic part is used to optimize the position of the abrupt transformation threshold of the moving permanent magnet relative to the fixed permanent magnet.
  • the device comprises a mechanical stop of the actuating button in the working position, said mechanical stop being positioned to maintain a repulsive magnetic effect between the fixed permanent magnet and the moving permanent magnet whatever the position. the actuation button.
  • the device comprises a magnetic retaining device of the actuating button requiring a minimum effort to exert on the actuating button to begin its movement.
  • the retaining device comprises two ferromagnetic parts cooperating when the actuating button is in the rest position, a first part being mounted on the actuating button and a second part being mounted on the body of the device.
  • the retaining device according to the invention makes it possible to dispense with elastic parts in deformation and also gives a particular tactile effect to the user since a minimum force must be exerted to take off the two ferromagnetic parts.
  • the mobile permanent magnet is therefore in magnetic interaction both with the fixed permanent magnet for its return to initial position and to obtain the blistering effect but also with the ferromagnetic part of the restraint.
  • the particular tactile sensation experienced by the user during a pressure on the actuating member therefore results from the combination between the magnetic effect of repulsion and the blistering effect exerted between the moving permanent magnet and the fixed permanent magnet and the magnetic attraction effect exerted between the movable permanent magnet and the ferromagnetic part of the retainer. This tactile sensation is not likely to deteriorate over time since it is achieved simply by the combination of these different magnetic effects.
  • the senor is sensitive to the variation of the magnetic field generated during the approach of the moving permanent magnet. From a threshold of magnetic field intensity, the sensor controls the switching of the electrical circuit.
  • the sensor is an electrical switch comprising a movable element controlled by magnetic effect to switch the electrical circuit between two positions, an open position of the electrical circuit and a closed position of said electrical circuit.
  • the movable element is offset with respect to the main axis.
  • the magnetic field created by the mobile permanent magnet is used to force the movable element of the switch to assume a position.
  • the tilting of the movable element between its two positions is achieved by employing the two directions of the magnetic field lines generated by the toroid-shaped mobile permanent magnet, on either side of its median plane.
  • the closure of the electrical circuit made by magnetic effect makes it possible to make the ohmic contact resistance independent of the force exerted by the operator. This resistance is perfectly reproducible at each button operation.
  • the mobile element is a pivoting membrane mounted on a substrate and carrying at one of its ends an electrical contact establishing the electrical junction between two fixed contacts disposed on the substrate when the membrane is in the closed position. of the electrical circuit.
  • the device may comprise several switches offset with respect to the main axis, for example juxtaposed or arranged symmetrically with respect to the main axis.
  • the switches are for example arranged symmetrically with respect to the main axis.
  • the switching device comprises a magnetic shielding device which makes it possible to protect it from the influence of an external magnetic field and to confine the magnetic field produced by the permanent magnets inside the device.
  • This shielding device may be composed of ferromagnetic parts covering the inner wall of the body of the device.
  • the switching device is used as push button or position switch.
  • the switching device 1 is a push-button comprising a body 10, for example cylindrical, introduced into an opening formed through a wall P.
  • An actuating button 3 is mounted to move in translation along the main axis ( A) in said body 10.
  • the actuating button 3 can take a rest position ( figure 1 , left part G) and a working position ( figure 1 , right part D) in which it is embedded in the body 10.
  • the device also comprises a sensor sensitive to the magnetic field.
  • This sensor can be Hall effect sensitive to a threshold of magnetic field strength to switch an electrical circuit. Hall effect sensors are well known, so they are not described in this application.
  • the sensor may also be a switch 2 of the electrical circuit type "reed” or MEMS type fixed on a support 11 integral with the body 10 and housed therein. Electrodes 12 of the electrical circuit to be switched, integral with the support 11, extend downwards from the device 1.
  • the sensor shown in the figures is a switch 2 of the MEMS type having a movable element mounted on a plane substrate 4 and consisting of a miniature ferromagnetic membrane 20 provided with a part made of ferromagnetic material. It can be realized in planar MEMS ("Micro ElectroMechanical System") type technology or in printed circuit board ("Printed Circuit Board”) or "flex printed circuit board” (“flexible printed circuit board”) laminating technology.
  • Several identical switches 2 may be arranged on the same substrate 4, for example juxtaposed or symmetrically with respect to the main axis (A), or mounted on the support 11 so as to form a matrix or a combination of switches normally open and normally closed.
  • the switches 2 are for example connected in parallel in the electric circuit.
  • the printed circuit board on which the switch 2 is mounted can receive a light-emitting diode 14.
  • the actuating button 3 will be made of transparent plastic, for example.
  • the membrane 20 carries a movable contact 21 adapted to come electrically connect two fixed contacts 41, 42 disposed on the substrate 4, when in a low position closing the electrical circuit.
  • the membrane 20 of the switch 2 can be controlled by a magnetic effect to pivot about an axis of rotation (R) perpendicular to the main axis (A) between a high opening position of the electrical circuit ( figure 3B ) and its low closing position of the electric circuit ( figure 3A ). It is connected to an anchor stud 23 for example by means of two arms 22a, 22b biased in flexion.
  • R axis of rotation
  • A main axis
  • a movable permanent magnet 5 in the form of a torus is mounted integral with the actuating button 3 and axially in the body 10 of the switching device 1.
  • the toroidal shape of the movable permanent magnet 5 has particular advantages in terms of construction and arrangement.
  • the switch 2 is disposed offset from the main axis (A) so as to be under the influence of a half-portion of the toroidal permanent magnet and can be arranged around the main axis (A), inside the torus ( figure 1 ) or outside the torus (not shown).
  • the device comprises several switches 2, these are all offset with respect to the main axis (A) and can be distributed circularly inside or outside the torus formed by the moving permanent magnet 5.
  • the magnetization direction of the toroidal permanent magnet follows a direction parallel to the main axis (A) and the magnetic field vector M parallel to the magnetization direction is oriented conventionally in the South-North direction, for example up on the figure 1 .
  • the magnetic field created by the moving permanent magnet 5 is designated M.
  • the magnetic field M created by the moving permanent magnet 5 has field lines L whose direction requires the membrane 20 to be in a position, for example in a low position ( Figure 4A ), corresponding to the closing of the electric circuit.
  • the movable permanent magnet 5 comprises a median plane which is perpendicular to its direction of magnetization and under which the membrane 20 is in a position, for example its low position ( Figures 3A and 4A ), and above which the membrane 20 is in its other position, for example its high position ( Figures 3B and 4B ).
  • the depression of the actuating button 3 to its working position thus causes a change of vertical position of the moving permanent magnet 5, which makes it possible to reverse the direction of the magnetic field lines seen by the membrane 20.
  • the magnetic field M has L field lines whose direction requires the membrane 20 to switch to its upper position corresponding for example to the opening of the electrical circuit.
  • the return of the actuating button 3 from its working position to its rest position can be achieved by a return device such as for example a return spring 13 mounted on the body 10 of the device 1 and against which is supported by the actuating button 3.
  • a return device such as for example a return spring 13 mounted on the body 10 of the device 1 and against which is supported by the actuating button 3.
  • FIG. 1 An improvement of a switching device represented in figure 1 consists of inserting a fixed permanent magnet into the body of the device.
  • the figure 5 shows a switching device 1 'bearing this improvement. This addition only improves the tactile sensation when pressing the actuating button 3.
  • the fixed permanent magnet 60 and the movable permanent magnet both have the shape of a torus.
  • the fixed permanent magnet 60 has an outer diameter (defined by the radius r1) smaller than the internal diameter (defined by the radius R1) of the moving permanent magnet 5, preferably slightly smaller than the internal diameter (R1) of the permanent magnet mobile 5.
  • the two permanent magnets 5, 60 are mounted coaxially around the main axis (A) and have the same direction of magnetization and opposite directions of magnetization so as to create between them a magnetic effect of repulsion to solicit the moving permanent magnet 5 and thus the actuating button 3 to its rest position.
  • the fixed permanent magnet 60 With respect to the moving permanent magnet 5 in the rest position of the actuating button 3, the fixed permanent magnet 60 is located on the other side of the support 11 of the switch 2.
  • the fixed permanent magnet 60 is positioned relative to the switch 2 so as not to participate in the actuation of the membrane 20 regardless of the position of the actuating button 3 (see Figures 6A and 6B ).
  • Such a configuration with two permanent magnets 5, 60 of different dimensions able to slide relative to each other makes it possible to generate a sudden transformation effect, also called a blistering effect when the actuating button 3 is depressed.
  • This blistering effect is achieved by magnetic effect between the two permanent magnets 5, 60 when the moving permanent magnet 5 approaches the fixed permanent magnet 60.
  • a blistering effect provides the user with a significant tactile effect during the depression. 3.
  • the actuating button 3 is driven rapidly to the end. race.
  • the abrupt transformation the force felt by the user decreases sharply. The abrupt transformation gives the user a particular tactile impression and guarantees the exercise of a minimum force to switch the electrical circuit.
  • FIGS 6A and 6B show the magnetic interaction produced between the two permanent magnets 5, 60 during the depression of the actuating button 3.
  • the field lines L 'generated by the fixed permanent magnet 60 do not influence the operation of the switch 2 and that the membrane 20 of the switch is tilted between its two positions by aligning with the field lines L of the movable permanent magnet 5 only.
  • annular ferromagnetic piece 90 can be mounted at the bottom of the body 10, around the fixed permanent magnet 60, coaxially with the two permanent magnets 5, 60.
  • This ferromagnetic piece 90 has an outer diameter slightly greater than the outer diameter (defined by the radius R2 on the figure 5 ) of the movable permanent magnet 5. It has an L-shaped cross section, the horizontal branch of which corresponds, for example, to the thickness of the torus of the moving permanent magnet 5 and whose vertical branch corresponds, for example, to the height of the fixed permanent magnet 60.
  • a stroke / effort diagram illustrating the variation of the force to be supplied as a function of the stroke of the actuating button is represented in FIG. figure 7 .
  • the stroke represents the distance between the moving permanent magnet 5 and the fixed permanent magnet 60.
  • the curve V1 illustrates the operation of the device without the ferromagnetic part 90 and the curve V2 illustrates the operation of the device with the ferromagnetic part 90. From of the curve V1, it is noted that the maximum of the force to be supplied before the abrupt transformation occurs when the stroke is negative, that is to say when the moving permanent magnet 5 is in a position in which it includes less partially fixed permanent magnet 60.
  • a mechanical stop 15 may be provided on the body 10 of the device so as to maintain a magnetic repulsion effect between the two permanent magnets 5, 60 regardless of the position of the actuating button 3. This stop 15 makes it possible to avoid that the moving permanent magnet 5 comes completely circumscribing the fixed permanent magnet 60 and thus canceling the magnetic effect of repulsion between the two magnets 5, 60. Thus, the actuating button 3 is always driven towards its rest position by simple magnetic effect without resorting to a mechanical return member.
  • the return device consisting of two permanent magnets 5, 60 in opposition to the figure 5 can be completed by a magnetic retaining device of the actuating button 3 composed of two ferromagnetic parts 7, 8 contiguous when the actuating button 3 is at rest ( figure 5 ).
  • a first ferromagnetic part 7 is mounted on the actuating button 3 and a second ferromagnetic part 8 is mounted on the body 10 of the device 1. These two parts 7, 8 define between them a variable air gap depending on the position of the button.
  • the first ferromagnetic part 7 integral with the actuating button 3 may be composed for example of an annular plate.
  • the second ferromagnetic part 8 has for example a cylindrical shape at least partially lining the lateral internal wall of the body 10 and having a reentrant collar at its upper edge.
  • the actuation button When the actuation button is at rest ( figures 1 and 5 , left part), the first part 7 abuts against the re-entrant flange of the second ferromagnetic part 8. A minimal force exerted on the actuating button 3 is therefore necessary to separate the two ferromagnetic parts 7, 8 and to take off. actuating button 3 of the body 10 of the device 1, thus giving the user a particular tactile effect when the button 3 is depressed.
  • the tactile effect made by the retaining device can be modified by varying in particular the overlap surface of the two ferromagnetic parts 7, 8 when the actuating button 3 is in the rest position.
  • the magnetic shielding can be made at least partly by the two ferromagnetic parts 7, 8 of the retaining device and by the ferromagnetic part 90 surrounding the fixed permanent magnet.
  • the magnetic shielding can also be achieved by the body 10 and the actuating button 3 which are then made of ferromagnetic materials.
  • the retaining device can be replaced or supplemented by a prestressed elastic structure 6 forming a blistering effect when the actuating button 3 is depressed.
  • the elastic structure 6 is subjected to abrupt transformation quickly causing the actuating button 3 at the end of the race. During the abrupt transformation, the force felt by the user decreases sharply. The abrupt transformation gives the user a particular tactile impression and guarantees the exercise of a minimum force to switch the electrical circuit.
  • the elastic structure 6 can play the role of waterproof membrane and the role of spring to return the actuating button to its rest position, thus completely replacing the return spring 13 or completing the action of the return spring 13.
  • the radial symmetry of the toroidal permanent magnet allows a circular distribution of several switches 2 in the same device 1.
  • the switches 2 may be juxtaposed or for example arranged symmetrically with respect to the main axis (A ).
  • the switches 2 are placed around the main axis (A), inside or outside the torus. So that the magnetic field M created by the permanent magnet 5 has an influence on the movable element of the switches 2 in each of the positions of the button 3, the set of switches 2 must be offset relative to the main axis (A ).
  • the orientation of the switch 2 with respect to the magnetic field M created by the permanent magnet 5 makes it possible to configure it "normally open” or "normally closed”. This means that when the actuating button 3 is in its rest position, depending on its orientation with respect to the magnetic fields, the membrane 20 can be in the up position ( figure 3B ) or in the low position ( figure 3A ).

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  • Push-Button Switches (AREA)

Claims (16)

  1. Schaltvorrichtung eines Stromkreises, die enthält:
    - einen Körper (10),
    - einen Betätigungsknopf (3), der im Körper (10) zwischen einer Ruhestellung und einer Arbeitsstellung gemäß einer Hauptachse (A) translationsbeweglich ist,
    - einen beweglichen Dauermagnet (5) in Form eines Torus, der in Translationsrichtung fest mit dem Betätigungsknopf (3) verbunden montiert und um die Hauptachse (A) koaxial ist, wobei der bewegliche Dauermagnet (5) ein Magnetfeld (M) erzeugt und eine Magnetisierungsrichtung parallel zur Hauptachse (A) aufweist,
    - einen ortsfesten zylindrischen Dauermagnet (60), der bezüglich des beweglichen Dauermagnets (5) koaxial montiert ist, wobei der bewegliche Dauermagnet (5) und der ortsfeste Dauermagnet (60) Abmessungen aufweisen, die festgelegt werden, damit sie zueinander gleiten können,
    - einen Sensor (2), der für das Magnetfeld empfindlich ist und den Stromkreis bei einer Verschiebung des Betätigungsknopfs (3) steuern kann, wobei der Sensor ein Schalter (2) ist, der ein bewegliches Organ aufweist, das durch Magnetwirkung vom beweglichen Dauermagnet zwischen einer Öffnungsstellung und einer Schließstellung des Stromkreises gesteuert wird,
    wobei die Vorrichtung dadurch gekennzeichnet ist, dass:
    - der Schalter (2) um die Hauptachse (A) im Inneren des vom beweglichen Dauermagnet (5) geformten Torus angeordnet ist,
    - das Magnetfeld (M) in der Ruhestellung des Betätigungsknopfs (3) Feldlinien (L) aufweist, deren Richtung das bewegliche Element zwingt, eine seiner zwei Stellungen einzunehmen,
    - die Richtung der Feldlinien (L) des Magnetfelds (M) in der Arbeitsstellung des Betätigungsknopfs (3) umgekehrt wird, wodurch das bewegliche Element gezwungen wird, die andere seiner zwei Stellungen einzunehmen,
    - das bewegliche Element sich je nach der Stellung des Betätigungsknopfs (3) auf der einen oder anderen Seite einer Mittelebene des beweglichen Dauermagnets (5) lotrecht zur Magnetisierungsrichtung des beweglichen Dauermagnets (5) befindet.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der ortsfeste Dauermagnet (60) scheibenförmig ist.
  3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass der ortsfeste Dauermagnet (60) einen Außendurchmesser geringer als der Innendurchmesser des torusförmigen beweglichen Dauermagnets (5) hat.
  4. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der ortsfeste Dauermagnet (60) torusförmig ist.
  5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass der torusförmige ortsfeste Dauermagnet (60) einen geringeren Außendurchmesser als der Innendurchmesser des torusförmigen beweglichen Dauermagnets (5) hat.
  6. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass ein ringförmiges ortsfestes ferromagnetisches Bauteil (90) auf den Körper (10) um den ortsfesten Dauermagnet (60) montiert ist.
  7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass das ferromagnetische Bauteil (90) einen wesentlich größeren Durchmesser als der Außendurchmesser des beweglichen Dauermagnets (5) hat.
  8. Vorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass sie einen mechanischen Anschlag (15) des Betätigungsknopfs (3) in der Arbeitsstellung aufweist, wobei der mechanische Anschlag (15) positioniert ist, um eine magnetische Abstoßwirkung zwischen dem ortsfesten Dauermagnet (60) und dem beweglichen Dauermagnet (5) aufrechtzuerhalten, unabhängig von der Stellung des Betätigungsknopfs (3).
  9. Vorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass sie eine magnetische Rückhaltevorrichtung des Betätigungsknopfs (3) aufweist, die eine minimale auf den Betätigungsknopf (3) auszuübende Kraft erfordert, um seine Bewegung zu starten.
  10. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, dass die Rückhaltevorrichtung zwei ferromagnetische Bauteile (7, 8) aufweist, die zusammenwirken, wenn der Betätigungsknopf (3) in der Ruhestellung ist, wobei ein erstes Bauteil (7) auf den Betätigungsknopf (3) und ein zweites Bauteil (8) auf den Körper (10) der Vorrichtung (1) montiert ist.
  11. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das bewegliche Element des Schalters (2) bezüglich der Hauptachse (A) versetzt ist.
  12. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das bewegliche Element eine schwenkbare Membran (20) ist, die auf ein Substrat (4) montiert ist und an einem ihrer Enden einen elektrischen Kontakt (21) trägt, der die elektrische Verbindung zwischen zwei auf dem Substrat (4) angeordneten ortsfesten Kontakten (41, 42) aufbaut, wenn die Membran (20) in der Schließstellung des Stromkreises ist.
  13. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass sie mehrere Schalter (2) aufweist, die bezüglich der Hauptachse (A) versetzt sind.
  14. Vorrichtung nach Anspruch 13, dadurch gekennzeichnet, dass die Schalter bezüglich der Hauptachse (A) symmetrisch angeordnet sind.
  15. Vorrichtung nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, dass sie eine magnetische Abschirmvorrichtung (7, 8, 90) aufweist.
  16. Vorrichtung nach einem der Ansprüche 1 bis 15, dadurch gekennzeichnet, dass sie als Drucktaster oder Positionsschalter verwendet wird.
EP06763489A 2005-06-06 2006-06-02 Schalteinrichtung einer elektrischen schaltung mit einem beweglichen toroidmagneten Not-in-force EP1889275B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0551507A FR2886759B1 (fr) 2005-06-06 2005-06-06 Dispositif de commutation d'un circuit electrique utilisant un aimant torique mobile
PCT/EP2006/062870 WO2006131502A1 (fr) 2005-06-06 2006-06-02 Dispositif de commutation d'un circuit electrique utilisant un aimant torique mobile.

Publications (2)

Publication Number Publication Date
EP1889275A1 EP1889275A1 (de) 2008-02-20
EP1889275B1 true EP1889275B1 (de) 2012-08-01

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EP06763489A Not-in-force EP1889275B1 (de) 2005-06-06 2006-06-02 Schalteinrichtung einer elektrischen schaltung mit einem beweglichen toroidmagneten

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EP (1) EP1889275B1 (de)
FR (1) FR2886759B1 (de)
WO (1) WO2006131502A1 (de)

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EP0749138B1 (de) * 1994-12-28 2003-03-19 Idec Izumi Corporation Dünne schaltvorrichtung und anzeigevorrichtung mit schalter
DE29905431U1 (de) * 1999-03-24 1999-06-02 Leopold Kostal GmbH & Co KG, 58507 Lüdenscheid Elektrischer Schalter
US6633158B1 (en) * 2001-09-17 2003-10-14 Jun Shen Micro magnetic proximity sensor apparatus and sensing method

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FR2886759A1 (fr) 2006-12-08
WO2006131502A1 (fr) 2006-12-14
EP1889275A1 (de) 2008-02-20
FR2886759B1 (fr) 2007-08-17

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