EP3826044B1 - Mehrpoliger schalter - Google Patents

Mehrpoliger schalter Download PDF

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Publication number
EP3826044B1
EP3826044B1 EP20208382.0A EP20208382A EP3826044B1 EP 3826044 B1 EP3826044 B1 EP 3826044B1 EP 20208382 A EP20208382 A EP 20208382A EP 3826044 B1 EP3826044 B1 EP 3826044B1
Authority
EP
European Patent Office
Prior art keywords
switch
conducting material
housing
electrically conducting
electrical circuit
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
EP20208382.0A
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English (en)
French (fr)
Other versions
EP3826044C0 (de
EP3826044A1 (de
Inventor
Cédric MORA
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Apem
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Apem
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Publication of EP3826044B1 publication Critical patent/EP3826044B1/de
Publication of EP3826044C0 publication Critical patent/EP3826044C0/de
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H01H13/14—Operating parts, e.g. push-button
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/26—Snap-action arrangements depending upon deformation of elastic members
    • H01H13/48—Snap-action arrangements depending upon deformation of elastic members using buckling of disc springs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/50—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member
    • H01H13/52—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member the contact returning to its original state immediately upon removal of operating force, e.g. bell-push switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2203/00—Form of contacts
    • H01H2203/036—Form of contacts to solve particular problems
    • H01H2203/038—Form of contacts to solve particular problems to be bridged by a dome shaped contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2203/00—Form of contacts
    • H01H2203/036—Form of contacts to solve particular problems
    • H01H2203/054—Form of contacts to solve particular problems for redundancy, e.g. several contact pairs in parallel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2205/00—Movable contacts
    • H01H2205/016—Separate bridge contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2209/00—Layers
    • H01H2209/068—Properties of the membrane
    • H01H2209/07—Properties of the membrane metallic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2215/00—Tactile feedback
    • H01H2215/004—Collapsible dome or bubble
    • H01H2215/022—Asymmetric; Elliptic; Square
    • H01H2215/024—Spider
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2225/00—Switch site location
    • H01H2225/006—Switch site location more then one pole
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2225/00—Switch site location
    • H01H2225/008—Two different sites for one circuit, e.g. for safety
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2225/00—Switch site location
    • H01H2225/01—Different switch sites under one actuator in same plane

Definitions

  • the present invention relates to a multipolar switch for selectively opening or closing at least two electrical circuits.
  • Industrial machine switches are widely used in industry. They are linked to the control system of the machine, and allow an operator to interact with the control system, in particular to stop the operation of the machine in the case of an emergency stop switch for example.
  • a particular type of switch comprises contact zones connected to an electrical circuit, and an actuation button mechanically connected to a part made of conductive material.
  • the actuating button moves or deforms, and causes the part made of conductive material to come into contact with the electrical circuit: the electrical circuit thus passes from the open state to the closed state.
  • An instruction corresponding to the function of the switch is sent to the control system which then controls the various effectors of the machine according to the instruction received.
  • Redundancy consists in doubling the input information of a system and/or the output effector organs. Applied to a switch for an industrial machine, redundancy consists of doubling the number of electrical circuits to perform the same function. For example, two electric circuits are used instead of just one to ensure the emergency stop of a machine. Thus, if a failure is observed in the closing of one of the two electrical circuits, the instruction can nevertheless be carried out thanks to the closing of the other electrical circuit, which improves safety.
  • a first switch 100 opens or closes the first electric circuit
  • a second switch 101 opens or closes the second electric circuit.
  • the two switches 100, 101 must be actuated simultaneously.
  • we generally provides a single actuation button 120 which is common to both switches. The actuation of this single actuation button makes it possible to simultaneously close the two electrical circuits.
  • the existing switches generally do not provide the user with satisfactory force feedback, so that it is not always easy to observe the actuation, or the degree of actuation, of the switch by touch. .
  • the document FROM 20 2017 104945 describes a membrane switch device with at least one double switch, each comprising an actuating element, a first switch with at least two switching contacts and an associated first conductor connector section and a second switch with at least two switching contacts, in which the actuating element, the first and the second switch in the direction of actuation are arranged one behind the other and the actuating element when actuated with a predetermined force in the direction of actuation mechanically acts on the first switch such that the first switch changes its switching state and wherein the series connection formed by the first and the second switch forcibly changes the switching state of the second switch when the first switch changes its switching state.
  • it is the change of switching state of the first switch which causes the change of switching state of the second switch. In other words, the change of switching state of the switches is implemented successively and not simultaneously.
  • An object of the invention is to propose a multipolar switch making it possible to overcome the drawbacks described above.
  • the invention aims in particular to provide a multipolar switch having a reduced size compared to known switches.
  • the invention is particularly aimed at providing a multipolar switch making it possible to improve the tactile effect, also known as the haptic effect, felt by a user when he activates the switch.
  • the invention relates to a multipolar switch for selectively opening or closing at least two electrical circuits.
  • the two electrical circuits are electrically isolated from each other.
  • the multipolar switch 1 is based on the principle of redundancy of the electrical signal, and allows for this purpose to open or close the two electrical circuits simultaneously (not shown), by actuating the actuating button 14 of said switch, as shown in picture 2 .
  • the multipolar switch 1 comprises a piece of electrically conductive material 4 advantageously in the form of a metal cup, allowing a user to actuate the switch.
  • This type of metal cup is known per se in the field of electronic devices.
  • the switch shown on the figure 3A , 3B , 4 , And 5 is a switch of an LED.
  • the switch according to the first embodiment is however not limited to a LED switch and the operation of such an LED will not be described in this text.
  • the cup 4 is advantageously preformed. It is in the form of a disk, comprising a central part 7, an intermediate part 8 which extends around the central part, and a peripheral part 9 which extends around the intermediate part.
  • the invention is however not limited to a cup in the form of a disk, and other shapes are suitable depending on the type of switch, for example a square, rectangular or even triangular shape.
  • the cup 4 is curved at the level of the central part 7. It has an upper face 23, and a lower face 24 opposite the upper face with respect to said cup.
  • the cup 4 is configured to deform elastically when it is mechanically stressed by a user in a direction of actuation of the switch.
  • the direction of actuation is represented by the arrow X on the figure 4 .
  • the mechanical force is applied from the upper face 23 of the cup, which can be directly accessible by the user, or alternatively be provided with an actuation button (not shown) on which the user can press to mechanically the cup.
  • the cup 4 then deforms at its intermediate part 8, passing from a convex curvature in which the central part 7 is directed away from the peripheral part 9 in the direction X, to a concave curvature in which the part central 7 is directed towards said peripheral part 9.
  • the curvature of the cup is reversed: it passes from a convex curvature to a concave curvature by deformation of its intermediate part.
  • the central part 7 for its part does not deform, or at the very least, deforms only very slightly.
  • the transition of the dish 4 from the convex curvature to the concave curvature, during its deformation, is felt by the user as a very slight jerk reflecting the maximum compression of the intermediate part.
  • the user thus feels a tactile or haptic effect, that is to say a force feedback, when he presses on the cup to actuate the switch. He then knows, without it being necessary to check it visually, that the cup is deformed and that the switch is activated.
  • the cup 4 advantageously has recessed portions 25, which make it possible to improve its deformation, that is to say that a reduced pressure is necessary on the part of the user to obtain a deformation of the hollow cup similar to that of a full cup.
  • the switch 1 further comprises electrical contact zones.
  • the electrical contact zones are located under the cup, opposite the lower face 24 of said cup. On the figure 3A , 3B and 4 , four electrical contact zones 2a, 2b, 3ab, 3b are present.
  • the first electrical contact areas 2a, 2b are electrically connected to a first electrical circuit, that is to say they make up the first electrical circuit, and the second electrical contact areas 3a, 3b are electrically connected to a second electrical circuit (not shown), that is to say that they make up the second electrical circuit.
  • the first and the second electrical circuit are electrically isolated from each other.
  • Switch 1 also includes a film 32 which at least partially covers the underside of the metal cup.
  • the film 32 is particularly visible on the figure 5 illustrating a sectional view of the switch.
  • the film 32 comprises a first and a second electrically conductive portions 26, 27 electrically insulated from each other by a first and a second electrically insulating portions 28, 29.
  • the first and second electrically conductive portions 26, 27 preferably comprise an electrically conductive material which covers the film 32.
  • the first and second electrically conductive portions 26, 27 preferably comprise metallic tracks screen-printed on the film 32, preferably silver tracks.
  • Each electrically conductive portion 26, 27 is arranged so as to come into contact with one or more respective electrical contact zones 2a, 2b and 3a, 3b, when the switch is actuated, in order to close the corresponding electrical circuit.
  • first electrically conductive portion 26 is arranged at the level of the intermediate part 8 of the cup, so as to come into contact with the first two electrical contact zones 2a, 2b
  • second electrically electrical portion 27 is arranged at the level of the intermediate part 8 of the cup, opposite the first electrically conductive portion 26 with respect to the center of the cup 4, so as to come into contact with the two second electrical contact zones 3a, 3b.
  • the first and second electrically conductive portions 26, 27 are electrically insulated from each other by the two electrically insulating portions 28, 29 situated between them.
  • the operation of the switch according to the first embodiment is as follows.
  • Switch 1 is initially at rest.
  • the cup 4 is in a rest configuration in which its central part 7 and its intermediate part 8 have a curvature convex.
  • the cup 4, in particular the insulating film 32 covering its underside, is remote from the electrical contact zones 2a, 2b, 3a, 3b.
  • the intermediate part 8 of the cup then takes on a concave curvature.
  • the first electrically conductive portion 26 comes into contact with the two first electrical contact areas 2a, 2b, thus closing the first electrical circuit
  • the second electrically conductive portion 27 comes into contact with the two second electrical contact areas 3a, 3b, thus closing the second electrical circuit.
  • the cup 4 is then in an actuation configuration, and the switch is actuated.
  • the force feedback induced by the transition of the cup 4 between its rest configuration and its actuated position informs the user tactilely of the actuation of the switch.
  • the multipolar switch 1 comprises two metal cups, including a first cup 4 and a second cup 5.
  • the metal cups 4, 5 are similar to those described in the first embodiment, with the difference that the latter are preferably solid. Indeed, it is not necessary to make cutouts in the cups to allow the operation of the switch according to this second embodiment.
  • the first and the second cup 4, 5 are arranged one above the other, facing each other, the first cup 4 being located above the second cup 5.
  • the two cups 4, 5 are housed in a casing 13 provided with a bottom 19 delimited laterally by a lateral surface 20 which extends from the bottom 19 away from the bottom.
  • the peripheral part 8 of the two cups 4, 5 is fixed to the casing.
  • the two cups 4, 5 are arranged so that their convex curvature deviates from the median plane which extends between the two cups.
  • the upper face of the first cup is therefore directed upwards in the plane of the sheet, opposite the case, while the upper face of the second cup is directed downwards in the plane of the sheet, towards the bottom 19 of the housing.
  • the multipolar switch 1 further comprises a film 33 arranged between the two cups 4, 5.
  • the film 33 comprises first electrically conductive zones or portions 2a, 2b, 2c deposited on the upper face of the film facing the first dish 4, and second electrically conductive portions 3a, 3b, 3c deposited on the lower face of the film forming facing the second cup 5.
  • the first and second electrically conductive portions 2a, 2b, 2c, 3a, 3b, 3c preferably comprise metallic tracks screen-printed on the film, preferably silver tracks.
  • the first and the second electrically conductive portions 2a, 2b, 2c, 3a, 3b, 3c are arranged on either side of the film 33, facing each other, at the level of the peripheral part 9 of the two cups 4, 5, and are then called peripheral electrically conductive portions 2a, 2c, 3a, 3c, and at the level of the central part 7 of the two cups, and are then called central electrically conductive portions 2b, 3b.
  • the first electrically conductive portions 2a, 2b, 2c are electrically connected to a first electrical circuit (not shown), that is to say they make up the first electrical circuit, and the second electrically conductive portions 3a, 3b, 3c are electrically connected to a second electrical circuit (not shown), that is to say they make up the second electrical circuit.
  • the first electrically conductive portions 2a, 2b, 2c are respectively electrically insulated from the second electrically conductive portions 3a, 3b, 3c by electrically insulating portions 54 of the film which separate them, at the level of the central part 7 and of the peripheral part 9 of the cups.
  • the central electrically conductive portions 2b, 3b are electrically insulated from the peripheral electrically conductive portions 2a, 2c, 3a, 3c by electrically insulating portions 55 of the film.
  • the upper face 23 of the second cup 5 is in contact with the bottom 13 of the case, at its central part 7.
  • a lug 30 projecting from the bottom 19 of the case is advantageously provided in order to serve as a stop for the central part 7 of the second cup.
  • the multipolar switch 1 further comprises an actuation button 14.
  • the actuating button 14 is mounted on the casing 13. It comprises an upper surface 31, and a lower surface 22 resting against the upper surface of the first cup, at the level of its central part.
  • the actuation button 14 is movable by actuation between a rest position in which the first and the second electrical circuits are open, and an actuation position by application of pressure by a user on its upper face 31, in which the cups 4, 5 are mechanically stressed to deform them elastically with respect to the box 13, in order to close the first and the second electric circuit.
  • the actuation button 14 is preferably a push button configured to return to its rest position from its actuation position when the user releases said push button.
  • Switch 1 is initially at rest, as shown in figure figure 6 .
  • the two cups 4, 5 are in a rest configuration in which their central part 7 and their intermediate part 8 have a convex curvature.
  • the central part 7 of each of the two cups 4, 5 is remote from the central electrically conductive portions 2b, 3b.
  • the central part 7 and the intermediate part 8 of the first cup 4 then assume a concave curvature, and said central part of the first cup comes into contact with the first central electrically conductive portion 2b, thus closing the first electrical circuit.
  • the intermediate part deforms, while the central part 7 does not deform, or at least deforms only very slightly.
  • the peripheral parts 9 of the two cups 4, 5 are in contact with each other, and that the abutment of the central part 7 of the second cup 5 against the lug 30 of the bottom of the case, the second cup 5 is deformed simultaneously with, and similarly to, the first cup.
  • the central part 7 of the second cup 5 comes into contact with the second central electrically conductive portion 3b, thus closing the second electric circuit.
  • the multipolar switch 1 comprises an electrically insulating thermoformed film 34.
  • thermoformed film 34 can be manufactured by heating the material in order to soften it, then by shaping the material which has thus become ductile so that it takes on a predetermined shape, and retains it after cooling to ambient temperature.
  • thermoformed film 34 can be formed cold, that is to say at room temperature.
  • the material of the thermoformed film preferably comprises a thermoplastic polymer adapted to be shaped by thermoforming.
  • thermoplastic polymer is preferably chosen from: polystyrene (PS), polyethylene (PE), polypropylene (PP), polycarbonate (PC), acrylonitrile butadiene styrene (ABS), polyvinyl chloride (PVC), polymethyl methacrylate (PMMA), and mixtures thereof, present in the form of homopolymers or copolymers.
  • PS polystyrene
  • PE polyethylene
  • PP polypropylene
  • PC polycarbonate
  • ABS acrylonitrile butadiene styrene
  • PVC polyvinyl chloride
  • PMMA polymethyl methacrylate
  • thermoformed film 34 comprises an upper face 35 and a lower face 36 opposite the upper face with respect to the film.
  • thermoformed film 34 comprises a domed portion 37, that is to say a convex prominence which extends from a substantially planar portion of the film.
  • the curved portion 37 comprises a bearing surface 38 on the upper face 35 of the film, on which the user can press, by exerting a force directed from the upper face towards the lower face of the film, in order to elastically deform the film.
  • the upper face 35 of the thermoformed film is advantageously covered, at least at the level of the curved portion 37, with a metal layer 39 making it possible to reinforce the tactile effect when the switch is actuated by deformation of the curved portion of the thermoformed film.
  • the metallic layer 39 is preferably deposited by metallization of the upper surface of the thermoformed film, or by bonding.
  • the switch 1 further comprises at least two electrically conductive areas 40a, 40b arranged on the underside of the thermoformed film, electrically separated from each other by an electrically insulating portion 41.
  • the electrically conductive areas are configured to come to the contact of a first and a second respective electrical contact zone (not shown).
  • the electrically conductive zones 40a, 40b are metallic tracks screen-printed on the thermoformed film, preferably silver tracks.
  • the insulating portion 41 preferably consists of a portion of the thermoformed film.
  • thermoformed film 34 is in a rest configuration in which the domed portion 37 has a convex curvature.
  • the electrically conductive areas 40a, 40b are remote from the electrical contact areas.
  • the domed portion 37 then assumes a concave curvature, and the first and second electrically conductive zones 40a, 40b respectively come into contact with first and second electric contact zones, thus closing the first and the second electric circuit.
  • the thermoformed film 34 is then in an actuation configuration, and the switch 1 is actuated.
  • the force feedback induced by the transition of the curved portion 37 of the thermoformed film 34 between its rest configuration and its actuated configuration informs the user by touch of the actuation of the switch.
  • the multipolar switch 1 comprises two elastically deformable parts 4, 5 of electrically conductive material.
  • the switch 1 comprises a housing 13 provided with an upper surface 16, a lower surface 17, and a blind orifice 18 which extends in the housing from the upper surface towards the lower face.
  • the orifice 18 is provided with a bottom 19 and a side surface 20 which extends from the bottom towards the upper surface of the housing.
  • the switch 1 further comprises at least a first electrical contact zone connected to a first electrical circuit, that is to say that it composes the first electrical circuit, and at least a second electrical contact zone connected to a second electrical circuit, i.e. it makes up the second electrical circuit.
  • the first and the second electrical contact zone are in the form of electrical contact pads 2a, 2b, 2c, and 3a, 3b, 3c arranged on the bottom 19 of the case. Pads 2a, 2b, and 2c are connected to the first electrical circuit, and pads 3a, 3b, and 3c are connected to the second electrical circuit.
  • the first electrical circuit is electrically isolated from the second electrical circuit.
  • the multipolar switch 1 comprises a first piece of electrically conductive material 4 and a second piece of electrically conductive material 5, which are both in the form of a metal cup.
  • the metal cups are similar in their manufacture to those described in the first and in the second embodiment, but differ from them in their shape.
  • first and the second cup 4, 5 have a star shape with several branches 10, or legs.
  • the metal cups include three legs.
  • the first and the second cup 4, 5 comprise a central part 7 from which extend the three tabs 10 which constitute the intermediate part 8 of the cup.
  • the ends 12 of the tabs constitute the peripheral part of the cup.
  • the first and the second cup 4, 5 are curved at their central part 7.
  • the tabs 10 extend from the central part 7 towards their ends 12 while bending, so as to longitudinally and transversely of said central part.
  • the legs 10 extend from the central part 7 by widening, that is to say by widening in a regular manner towards their end 12.
  • the legs 10 are separated from each other by notches 11.
  • the notches have a curved shape which corresponds to the flare of the legs 10.
  • the first and the second cup 4, 5 are able to deform elastically, by accumulation and release of potential energy, at their intermediate part 8, that is to say the legs 10, passing from a convex curvature to a concave curvature.
  • the central part 7 for its part does not deform, or at the very least, deforms only very slightly.
  • the first cup 4 is arranged on and at a distance from the electrical contact pads 2a, 2b, 2c, 3a, 3b, 3c.
  • An electrically insulating layer 6 is arranged between the first 4 and the second cup 5 in order to electrically insulate them from each other.
  • the first cup 4 is arranged so that its ends 12 face the first electrical contact zone in the direction of actuation. More specifically, each end 12 of the first cup faces a corresponding first electrical contact pad 2a, 2b, 2c.
  • the second cup 5 is arranged on the first metal cup 4, and is offset relative to the latter by an angle determined along an axis perpendicular to the longitudinal plane containing the central part of the second cup. Due to this offset, each of the ends 12 of the second cup 5 coincides with a corresponding notch 11 of the first cup 4, and each end 12 of the second cup 5 faces a second electrical contact pad 3a, 3b, 3c corresponding. On the embodiment shown in the figure 9 , the second cup 5 is offset by an angle of 60° relative to the first cup 4.
  • the first and the second cup 4, 5 are initially in a rest configuration, in which said parts are spaced from the first and second electrical contact zones 2a, 2b, 2c, 3a, 3b, 3c.
  • the first and the second electrical circuit are therefore open.
  • the actuation button passes from a position of rest position to an actuation position in which it transmits the user's pressure to the central part 7 of the second cup 5.
  • the second cup 5 is elastically deformed and comes to press against the first part 4, via the electrically insulating layer 6, thus causing the deformation of said first cup 4 .
  • the first and second parts 4, 5 are then in an activated configuration.
  • the first cup 4 is in contact with the first electrical contact pads 2a, 2b, 2c, and the second cup 5 is in contact with the second electrical contact pads 3a, 3b, 3c, thus making it possible to close respectively the first and second electrical circuits.
  • FIG. 10 illustrates a fifth embodiment of the multipolar switch according to the invention.
  • the fifth embodiment differs from the fourth embodiment described above by the structure of the first and second parts made of electrically conductive material 4, 5.
  • the first part 4 comprises four tabs 10, and these extend from the central part 7 of the part, tapering in a regular manner towards their end.
  • the first part 4 is curved at its central part 7, as shown in the figure 13 .
  • the tabs 10 extend from the central part 7 towards their ends 12 while bending, so as to move away longitudinally and transversely from said central part.
  • the second part 5 is in the form of an X, as illustrated by the figure 10 And 15 . It comprises a central part comprising a disc 42 pierced with an opening 21 in its center, as well as an intermediate part comprising four tabs 10 which extend from the central part, to their ends 12 which constitute the peripheral part of the room.
  • the tabs 10 are preferably curved in order to promote the elastic deformation of the first part.
  • the first part 4 is arranged so that two opposite ends 12 of its four ends each face a first stud electrical contact 2a, 3b.
  • the electrical contact 2a is connected to a first electrical circuit via a terminal 48 located on the casing and projecting outside the latter.
  • the electrical contact 3b is connected to the first electrical circuit via a terminal 49 located on the casing and projecting outside the latter.
  • the first part 4 is able to deform elastically, by accumulation and release of potential energy, at its intermediate part 8, that is to say its legs 10, passing from a convex curvature to a concave curvature .
  • Its central part 7 as for it does not deform, or at least, deforms only very slightly.
  • the transition of the first part 4 from a convex curvature to a concave curvature, during its deformation, is felt by the user as a very slight jerk reflecting the maximum compression of the intermediate part.
  • the user thus feels a haptic or force feedback effect when he presses on the second part 5 to actuate the switch. He then knows, without it being necessary to check it visually, that the first part 4 is deformed and that the switch is activated.
  • the second part 5 is arranged on the first part 4 so that each of the ends 12 of the second part 5 coincides with a corresponding space between two consecutive legs 10 of the first part 4.
  • Each end 12 of the second part 5 faces to a corresponding second electrical contact pad 2b, 2c, 3a, 3c.
  • the electrical contacts 2b, 2c, 3a, 3c are connected to a second electrical circuit via respective terminals 50, 51, 52, 53 located on the casing and projecting outside the latter.
  • connections of the first and second parts to the electrical contacts are not limited to those illustrated on the figure 11 And 12 .
  • the number of legs of each part 4 and their connection to the electrical contacts of the case can be adapted according to the number and the arrangement of said electrical contacts.
  • the ends of the first part 4 bear against the bottom 19 of the case 13, while their central part is separated by a determined distance from the bottom 19 of the case.
  • a thin (50 micron) and flexible electrically insulating layer 6 is arranged between the first and the second part 4, 5 in order to electrically insulate them from each other.
  • the insulating film is high temperature (about 420°C).
  • the second part 5 rests on the electrically insulating layer 6.
  • the multipolar switch 1 further comprises an actuation button 14 illustrated on the figures 15 and 16 .
  • the actuating button can also be present in the switch described according to fourth embodiment, and is arranged in a similar manner notwithstanding the structural differences of the parts made of electrically conductive material.
  • the actuating button 14 is arranged on the body 45. It comprises an upper surface 31, and a lower surface 22 resting against the central part 7 of the second part 5.
  • the actuation button 14 is movable by actuation between a rest position in which the first 43 and the second electrical circuit 44 are open, and an actuation position by application of pressure by a user on its upper face 31, in which the first and the second part 4, 5 are mechanically stressed to deform them elastically with respect to the body 45, in order to close the first 43 and the second electrical circuit 44.
  • the actuation button 14 is preferably a push button configured to return to its rest position from its actuation position when the user releases said push button.
  • the multipolar switch further comprises a closure cover 15 which holds the actuation button 14 against the body 45 of the case in a sealed manner.
  • the closure cover 15 makes it possible to maintain all the elements of the switch in the box 13 in a sealed manner.
  • the actuation button 14 comprises at its periphery a membrane 56 which seals the switch by being compressed between the body 45 of the case and the closure cover 15.
  • the actuating button 14 is in a rest position.
  • the first and the second part 4, 5 are in a rest configuration, in which said parts are spaced from the first and second electrical contact zones 2a, 2b, 2c, 3a, 3b, 3c.
  • the first 43 and the second electrical circuit 44 are therefore open.
  • the actuating button 14 of the switch When the user exerts pressure on the actuating button 14 of the switch, illustrated by the arrow X on the figure 16 , the actuating button 14 passes from its rest position to its actuating position in which it transmits the pressure of the user to the central part 7 of the second part 5.
  • the second part 5 translates vertically, according to the direction of actuation of the switch by the user, that is to say in the direction of the first part 4.
  • the second part 5 moves and comes to press against the first part 4, via the electrically insulating layer 6, thus causing the deformation of said first part 4.
  • the second part 5 may deform slightly under the effect of mechanical pressure.
  • the ends 12 of the second part 5 come into contact with the electrical contact pads 2b, 2c, 3a, 3c, thus closing the first electrical circuit.
  • the curved shape of the lugs 10 of the second part 5 makes it possible to release the first part 4 at its intermediate part 8, which promotes the elastic deformation of said first part and improves the haptic effect.
  • the first and second parts 4, 5 are then in an activated configuration, illustrated on the figure 16 .
  • the first and second electrical circuits 43, 44 are closed.
  • the second part 5 is capable of deforming after having come into contact with the second pads 2b, 2c, 3a, 3c of electrical contact, when the switch is actuated.
  • This additional deformation, or after travel, of the second part 5 makes it possible to improve the electrical contact between the latter and the second pads 2b, 2c, 3a, 3c of electrical contact, as well as between the first part 4 and the first pads 2a, 3b of electrical contact, given that the second part 5 transfers the force due to the actuation of the switch to the first part 4, thus causing the deformation of the latter.

Claims (7)

  1. Mehrpoliger Schalter (1) zum selektiven Öffnen oder Schließen von mindestens zwei elektrischen Schaltungen, umfassend :
    ein Gehäuse (13), das mit einer oberen Fläche (16), einer unteren Fläche (17) und einer Blindöffnung (18) versehen ist, die sich von der oberen Fläche (16) zur unteren Fläche (17) in das Gehäuse (13) erstreckt, wobei die Blindöffnung (18) mit einem Boden (19) und einer Seitenfläche (20) versehen ist, die sich vom Boden (19) zur oberen Fläche (16) des Gehäuses (13) hin erstreckt,
    mindestens einen ersten elektrischen Kontaktbereich (2a, 3b), die mit einem ersten Stromkreis verbunden ist, und mindestens einen zweiten elektrischen Kontaktbereich (2b, 2c, 3a, 3c), die mit einem zweiten Stromkreis verbunden ist, wobei der erste Stromkreis von dem zweiten Stromkreis elektrisch isoliert ist, wobei die erste und die zweite elektrische Kontaktzone in Form von elektrischen Kontaktflächen (2a, 2b, 2c, 3a, 3b, 3c) vorliegen , die auf dem Boden (19) des Gehäuses -13) angeordnet sind,
    ein erstes Teil (4) aus elektrisch leitendem Material, das auf und entfernt von dem ersten Bereich (2a, 3b) des elektrischen Kontakts angeordnet ist, und ein zweites Teil (5) aus elektrisch leitendem Material, das auf dem ersten Teil (4) aus elektrisch leitendem Material angeordnet ist,
    eine elektrisch isolierende Schicht (6), die zwischen dem ersten und dem zweiten Teil (4, 5) aus elektrisch leitendem Material angeordnet ist, um sie elektrisch voneinander zu isolieren,
    in dem
    das erste Teil (4) aus elektrisch leitfähigem Material so konfiguriert ist, dass es sich, wenn es mechanisch in einer Betätigungsrichtung des Schalters belastet wird, elastisch verformt,
    und das zweite Teil (5) aus elektrisch leitfähigem Material so konfiguriert ist, dass es sich elastisch verformt oder sich in einer Betätigungsrichtung des Schalters bewegt,
    zwischen einer Ruhekonfiguration, in der das erste und das zweite Teil (4, 5) von der ersten und dem zweiten elektrischen Kontaktbereich (2a, 2b, 2c, 3a, 3b, 3c) entfernt sind, und einer aktivierten Konfiguration, in der das erste und das zweite Teil (4, 5) jeweils mit der ersten und dem zweiten elektrischen Kontaktbereich (2a, 2b, 2c, 3a, 3b, 3c) in Kontakt stehen, um den ersten bzw. den zweiten Stromkreis zu schließen, zu bewegen.
  2. Mehrpoliger Schalter (1) nach Anspruch 1, wobei das erste Teil (4) und/oder das zweite Teil (5) aus elektrisch leitendem Material einen Mittelteil (7), einen Zwischenteil (8), der sich um den Mittelteil herum erstreckt, und einen Randteil (9), der sich um den Zwischenteil herum erstreckt, umfasst, wobei das Teil am Mittelteil (7) gewölbt ist, wobei der Zwischenteil (8) so konfiguriert ist, dass er sich in Bezug auf den Randteil (9) elastisch verformt, so dass der Zwischenteil (8) mit mindestens einem jeweiligen elektrischen Kontaktbereich (2a, 2b, 2c, 3a, 3b, 3c) in Kontakt kommt, wenn das Teil mechanisch belastet wird.
  3. Mehrpoliger Schalter (1) nach Anspruch 1, wobei das erste und das zweite Teil (4, 5) aus elektrisch leitendem Material umfasst: einen Mittelteil (7), einen Zwischenteil (8), der sich um den Mittelteil herum erstreckt und Laschen (10) umfasst, die durch Kerben (11) voneinander getrennt sind, und einen Randteil (9), der sich um den Zwischenteil herum erstreckt und die Enden (12) der Laschen (10) umfasst, wobei das erste und das zweite Teil (4, 5) so angeordnet sind, dass jede Lasche (10) eines der ersten und zweiten Teile mit einer Kerbe (11) des anderen Teils zusammenfällt, und wobei die Laschen (10) des zweiten Teils (5), oder die Laschen (10) des ersten Teils (4) und des zweiten Teils (5), so konfiguriert sind, dass sie sich in Bezug auf den Randteil (9) elastisch verformen, so dass jede Lasche in der aktivierten Konfiguration einen jeweiligen ersten (2a, 3b) oder zweiten (2b, 2c, 3a, 3c) elektrischen Kontaktbereich berührt.
  4. Mehrpoliger Schalter (1) nach einem der vorhergehenden Ansprüche, wobei das erste und das zweite Teil (4, 5) aus elektrisch leitendem Material, die durch die isolierende Schicht (6) getrennt sind, in dem Gehäuse (13) untergebracht sind, wobei der Randteil (9) des ersten und des zweiten Teils (4, 5) aus elektrisch leitendem Material an dem Gehäuse (13) befestigt ist, wobei der mehrpolige Schalter (1) ferner einen Betätigungsknopf (14) umfasst, der an dem Gehäuse (13) angeordnet ist, der zwischen einer Ruhestellung, in der der erste und der zweite Stromkreis offen sind, und einer Betätigungsstellung durch Druckausübung eines Benutzers, in der das erste und das zweite Teil (4, 5) aus elektrisch leitendem Material mechanisch vorgespannt sind, um sie in Bezug auf das Gehäuse (13) elastisch zu verformen, um den ersten und den zweiten Stromkreis zu schließen, beweglich ist.
  5. Mehrpoliger Schalter (1) nach einem der Ansprüche 1 bis 3, wobei das erste und das zweite Teil (4, 5) aus elektrisch leitendem Material, die durch die isolierende Schicht (6) getrennt sind, in dem Gehäuse (13) untergebracht sind, der Randteil (9) des zweiten Teils (5) am Gehäuse (13) befestigt ist, wobei der mehrpolige Schalter (1) außerdem einen am Gehäuse (13) angeordneten Betätigungsknopf (14) umfasst, der zwischen einer Ruhestellung, in der der erste und der zweite Stromkreis offen sind, beweglich ist, und einer Betätigungsstellung durch Druckausübung durch einen Benutzer, in der das zweite Teil mechanisch vorgespannt ist, um es entlang der Betätigungsrichtung in Richtung des ersten Teils (4) zu bewegen, um Druck gegen das erste Teil (4) auszuüben, und das erste Teil (4) durch das zweite Teil (5) mechanisch vorgespannt ist, um es in Bezug auf das Gehäuse (13) elastisch zu verformen, um den ersten und den zweiten Stromkreis zu schließen.
  6. Mehrpoliger Schalter (1) nach Anspruch 5, wobei das zweite Teil (5) aus elektrisch leitendem Material geeignet ist, sich zu verformen, nachdem es beim Betätigen des Schalters mit den zweiten elektrischen Kontaktbereichen (2b, 2c, 3a, 3c) in Kontakt gekommen ist.
  7. Mehrpoliger Schalter (1) nach einem der Ansprüche 4 bis 6, wobei der Betätigungsknopf (14) ein Druckknopf ist, der so konfiguriert ist, dass er aus seiner Betätigungsstellung in seine Ruhestellung zurückkehrt, wenn der Benutzer den Druckknopf loslässt.
EP20208382.0A 2019-11-20 2020-11-18 Mehrpoliger schalter Active EP3826044B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1912949A FR3103310B1 (fr) 2019-11-20 2019-11-20 Interrupteur multipolaire

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EP3826044A1 EP3826044A1 (de) 2021-05-26
EP3826044B1 true EP3826044B1 (de) 2023-06-07
EP3826044C0 EP3826044C0 (de) 2023-06-07

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Publication number Priority date Publication date Assignee Title
CN115621069A (zh) * 2021-07-16 2023-01-17 三美电机株式会社 按键开关

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05258641A (ja) * 1992-03-16 1993-10-08 Matsushita Electric Ind Co Ltd パネルスイッチ
US5898147A (en) * 1997-10-29 1999-04-27 C & K Components, Inc. Dual tact switch assembly
JP2005340154A (ja) * 2004-03-12 2005-12-08 Fuji Denshi Kogyo Kk 二段動作スイッチ
FR2906930B1 (fr) * 2006-10-06 2013-05-31 Nicomatic Sa Composant de contact a dome metallique, et carte le comportant
EP2240946A1 (de) * 2008-01-16 2010-10-20 Snaptron, Inc. Taktile vorrichtungen und verfahren
US10460890B2 (en) * 2017-06-13 2019-10-29 Trent Zimmer Multi-pole dome switch
DE202017104945U1 (de) * 2017-08-17 2017-09-06 Brehmer Gmbh & Co. Kg Redundante Folienschaltereinrichtung

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FR3103310B1 (fr) 2021-11-19
FR3103310A1 (fr) 2021-05-21
EP3826044C0 (de) 2023-06-07
US20220181099A1 (en) 2022-06-09
EP3826044A1 (de) 2021-05-26
US11495418B2 (en) 2022-11-08

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