EP4681237A1 - Disque à encliquetage et agencement de disque à encliquetage - Google Patents

Disque à encliquetage et agencement de disque à encliquetage

Info

Publication number
EP4681237A1
EP4681237A1 EP24735986.2A EP24735986A EP4681237A1 EP 4681237 A1 EP4681237 A1 EP 4681237A1 EP 24735986 A EP24735986 A EP 24735986A EP 4681237 A1 EP4681237 A1 EP 4681237A1
Authority
EP
European Patent Office
Prior art keywords
contact
contacts
switching
plane
snap disk
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.)
Pending
Application number
EP24735986.2A
Other languages
German (de)
English (en)
Inventor
Andreas Graf
Peter Haller
Robert Masa
Alexander PRILL
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.)
Marquardt GmbH
Original Assignee
Marquardt GmbH
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 Marquardt GmbH filed Critical Marquardt GmbH
Publication of EP4681237A1 publication Critical patent/EP4681237A1/fr
Pending legal-status Critical Current

Links

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
    • H01H13/26—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
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/20—Bridging contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2215/00—Tactile feedback
    • H01H2215/004—Collapsible dome or bubble
    • H01H2215/026—Eccentric actuation
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H25/00—Switches with compound movement of handle or other operating part
    • H01H25/04—Operating part movable angularly in more than one plane, e.g. joystick
    • H01H25/041—Operating part movable angularly in more than one plane, e.g. joystick having a generally flat operating member depressible at different locations to operate different controls

Definitions

  • the invention relates to a snap disk for the separate electrical contacting of a plurality of contacts and to a snap disk arrangement with such a snap disk.
  • snap-on disks have long been known in the state of the art and, for example, from document US 11,127,543 B2.
  • a snap-on disk is usually understood to be a component for pushbutton switches that are intended to have a noticeable pressure point.
  • these components are often made of spring steel or a comparable material, whereby the important thing with conventional snap-on disks is that their material and shape are such that they have a stable and a metastable state.
  • the component can then be bent by the application of force and suddenly change from the stable to the metastable state. state, whereby the sudden state transition creates the aforementioned noticeable pressure point and usually an acoustic feedback that is perceptible as a “cracking” sound.
  • a snap disk is arranged in the pushbutton switch on or above two contacts which are insulated from one another and which are electrically separated, i.e. insulated, in the stable state and contacted by the electrically conductive snap disk in the metastable state and are thus connected to one another.
  • a snap disk can only represent exactly one switch, i.e. only one connection can be made between exactly two contacts. If several separately switchable connections are required, a pushbutton switch or snap disk must be provided for each, which is space-intensive and costly.
  • the invention is therefore based on the object of overcoming the aforementioned disadvantages and providing a snap disk and an associated arrangement with which several separate switching signals can be generated in a fail-safe manner.
  • a snap disk is therefore proposed for the separate electrical contacting of a plurality of contacts located in a first plane and insulated from one another. Insulated is defined as In the present application, the term "electrically insulated” is understood to mean electrically insulated, with the contacts being clarified to be electrically insulated from one another, but can be electrically connected to one another by means of the contact bridges mentioned below.
  • the plurality of contacts preferably comprises at least three contacts, of which preferably exactly one contact is the collective contact explained below and of which at least two contacts are the switching contacts explained below.
  • the snap disk has a support body for support on a surface lying in the first plane, a deformation body connected to it and a plurality of contact bridges arranged on the deformation body at a distance from the support body and insulated from one another.
  • the deformation body is designed to hold the contact bridges in an undeformed, stable state in a second plane spaced from the first plane and preferably electrically separated from the contacts accordingly, and to be deformed in a spring-elastic manner in the direction of the first plane by a force acting from the second plane in the direction of the first plane into a deformed, unstable or metastable state in which the contact bridges lie in the first plane or border on the first plane.
  • the contact bridges are each designed to electrically connect at least two of the contacts that are insulated from one another in the deformed state of the deformation body, i.e. the unstable or metastable state, so that an electrical contact is established between at least two of the contacts by each contact bridge. It follows that at least two of the contacts together with the associated contact bridge form a switch and the one snap disk per contact bridge forms a switch or can serve as a switching element of a switch. With regard to the collective contact and the switching contacts already mentioned, the collective contact preferably forms each with one switching contact, so that the number of switches or switching elements corresponds to the number of switching contacts.
  • the snap disk proposed here is also designed in such a way that it or its deformation body is preferably designed in such a way that the transition from the stable to the unstable or metastable state is sudden, i.e. the snap disk "snaps" from the stable to the meta or unstable state as soon as the applied force reaches a limit value.
  • the sudden transition can result in haptic feedback as a pressure point and acoustic feedback that can be perceived as a "crack".
  • the snap disk is intended to connect several contacts electrically, it is undesirable that an electrical connection can be made unintentionally via the support body or the deformation body. Accordingly, various variants are provided to prevent such an unintentional electrical connection via the support and the deformation body.
  • the support body and the deformation body are made of an electrically non-conductive material. Accordingly, an electrical connection can only be established via the contact bridges.
  • the support body is made of an electrically conductive material and the deformation body is made of an electrically non-conductive material. Accordingly, the deformation body insulates the contact bridges from the support body.
  • a An insulating separating body or an insulating layer is provided between the support body and the contacts.
  • the support body does not necessarily have to be supported on the contacts. Support bodies and/or contacts can be designed in such a way that the support body has support points outside the contacts. It would also be possible for the support body to be designed to be supported on the contacts, but to have a segment for each support point, with the segments of the support body in turn being insulated from one another so that the contacts are not electrically connected via the support body.
  • a third variant provides that the support body is made of an electrically non-conductive material and the deformation body is made of an electrically conductive material, wherein the deformation body is insulated from the contact bridges, for example via an intermediate separating body or an insulating layer, or the deformation body has a segment for each contact bridge, which are insulated from one another.
  • the deformation body and the contact bridges are formed integrally with one another and each segment of the deformation body forms a contact bridge, wherein the segments are insulated from one another, for example by a respective separating body or a respective insulating layer.
  • a fourth variant provides that the support body and the deformation body are made of an electrically conductive material, wherein the deformation body is insulated from the contact bridges, for example, by a separating body or an insulating layer, or the deformation body has a segment for each contact bridge, which are insulated from each other.
  • the support body and/or the deformation body can be segmented and the contact bridges can be formed integrally with the deformation body, for example. It is also possible that between the support body or its A separating body or an insulating layer is provided between the support points and the contacts.
  • the deformation body is designed as a dome-shaped or frustoconical element which is connected to the support body at its base.
  • the support body can be arranged radially on the outside and the contact bridges can be arranged radially on the inside of the deformation body, whereby the support body can run around the deformation element.
  • the deformation body can also have an opening in the center, which allows a light source, such as an LED, to be arranged centered in the snap-on disk.
  • the light source can be electrically connected to one or even several contacts.
  • the light source can be contacted with the collective contact, which preferably serves as a connection to GND.
  • the snap disk has connection sections on the support body, in particular designed as solder contacts, for fastening to a surface lying in the first plane.
  • the connection sections are preferably the support or support points already mentioned, by means of which the snap disk can be supported relative to the first plane or the surface lying in the first plane.
  • a further aspect of the invention relates to a snap disk arrangement with a snap disk according to the invention and with a circuit carrier, which can be a printed circuit board, for example.
  • the circuit carrier has a surface which determines the first plane and in or on which the plurality of contacts which are insulated from one another are arranged.
  • the plurality of contacts preferably consists of at least one collective contact and at least two switching contacts, so that the plurality of Contacts, i.e. at least three contacts.
  • the contact bridges are designed to connect the collective contact with one switching contact each.
  • the number of switching contacts corresponds to the possible number of separately switchable connections.
  • the contacts i.e. possibly both the collective contact and the switching contacts, are each designed in the form of a web or with at least one and preferably a plurality of web-shaped sections and are arranged in such a way that the web of a second contact, preferably one of the switching contacts, is arranged directly adjacent to a web of a first contact, preferably the collective contact.
  • the contact bridges are each designed to connect webs of two contacts, or at least one web of the collective contact to at least one web of a switching contact.
  • the collective contact is arranged centrally to an imaginary central axis and the switching contacts are distributed in the circumferential direction around the collective contact.
  • the collective contact has at least one web per switching contact, with the webs of the collective contact extending radially outwards in a beam shape.
  • the webs of the switching contacts extend radially inwards so that an annular overlap region is formed in the circumferential direction, in which at least one web of a switching contact is arranged immediately adjacent to a web of the collective contact.
  • a snap disk arrangement can also have a circuit for detecting an electrical connection between two contacts that can be connected by a contact bridge.
  • the circuit has a voltage divider connected in series with one of the two contacts, consisting of a shunt resistor and a measuring resistor, as well as a voltage measuring device which is designed to measure the voltage across the measuring resistor, so that when contacts are contacted by the contact bridge, the voltage measuring device can measure a previously known voltage which is dependent on the measuring resistor and which indicates, i.e. indicates, an electrical connection between the contacts via the contact bridge.
  • the snap disk arrangement has a circuit for detecting a respective electrical connection through a contact bridge between the collective contact and a switching contact.
  • one measuring strand is provided for each switching contact.
  • one measuring strand is provided for each switching contact group, wherein a switching contact group comprises at least one switching contact and wherein the switching contacts of a group are connected in parallel to one another or are electrically connected to one another.
  • the circuit has a voltage divider made up of a shunt resistor and a measuring resistor connected in series with the respective switching contact for each measuring strand.
  • the circuit has at least one voltage measuring device with at least one measuring input, which is designed to measure the voltage via a measuring resistor at a respective measuring input, so that when the switching contact is electrically connected to the collective contact by the contact bridge, the voltage measuring device can measure a previously known voltage that is dependent on the respective measuring resistor at the respective measuring input, which indicates an electrical connection between the collective contact and the respective switching contact via the contact bridge.
  • a voltage measuring device with one measuring input per measuring string is provided, whereby alternatively one voltage measuring device per measuring string could also be provided.
  • the voltage dividers can have measuring resistors of identical size and shunt resistors of identical size, so that an identical voltage is achieved when the respective switching contact is connected to the collective contact.
  • the measuring resistors and the shunt resistors of the voltage divider have different sizes to each other, so that an individual voltage is established across each of the measuring resistors when the contacts are connected, which is assigned to a specific switching contact or a specific switching contact group. Since this voltage is known in advance, the measured voltage as the actual voltage can be compared with the stored, known voltage as the target voltage, so that it can be determined whether there is a faulty short circuit or an intended connection.
  • the voltmeter device is designed as a control unit or is connected to a control unit. If several voltage measuring devices are provided, these can each be connected to the control unit. In this case, the control unit is designed to compare the voltages measured via the measuring resistors as actual voltages with the voltages assigned to the measuring strands as target voltages.
  • one aspect of the invention relates to a pushbutton switch with a snap disk according to the invention and/or a snap disk arrangement according to the invention, wherein the pushbutton switch further comprises a probe body for transmitting the force to the snap disk.
  • the probe body is designed to transmit a force to the snap disk in such a way that the contact bridges can be brought from the second level to the first level and the deformation body can be deformed accordingly.
  • the touch body is preferably also designed in such a way that the transmitted force can be varied with regard to its point of action at which the force is applied to the snap disk, so that, for example, the contact bridges can be brought into contact with the contacts individually and independently of one another.
  • Fig. 1 shows a snap disk arranged on contacts of a circuit carrier
  • Fig. 2 Contacts of a circuit carrier
  • Fig. 3 shows a first variant of a snap disk arrangement
  • Fig. 4 shows a second variant of a snap disk arrangement.
  • the figures are schematic examples.
  • the same reference symbols in the figures indicate the same functional and/or structural features.
  • the contacts according to Figure 2 can in particular be the contacts shown in Figure 1.
  • the contacts according to Figures 1 and 2 can correspond to the contacts according to Figures 3 and 4, whereby a snap disk according to Figure 1 can be provided on the snap disk arrangement according to Figures 3 and 4.
  • a main idea of the present invention is to be able to generate several separate switching signals with only one snap disk, so that accordingly several connections between contacts can be established preferably independently of one another with only one snap disk.
  • a snap disk 10 is proposed for this purpose, as shown by way of example in Figure 1.
  • the snap disk 10 is segmented for this purpose, so that an electrically conductive connection is not created between all connectable contacts 20, 21, 22, 23, 24, 25 at the same time.
  • the segmentation can be achieved using different variants.
  • the snap disk 10 has a support body 11, a deformation body 12 and several contact bridges 13, the latter being designed to create the electrically conductive connection between the contacts 20, 21, 22, 23, 24, 25 to be connected.
  • an applied force K exceeds a limit force, this can be brought into a metastable or unstable state in which the contact bridges 13 are deflected towards the contacts 20, 21, 22, 23, 24, 25.
  • the force K is applied to, however, only one or only certain contact bridges 13 are connected to the respective associated contacts 20, 21, 22, 23, 24, 25.
  • five contacts 20 are provided, which are designed as a collective contact 25 and four switching contacts 21, 22, 23, 24.
  • the collective contact 25 can be connected to the switching contacts 21, 22, 23, 24 by means of a switching bridge 13, so that four separate switches or connections can be realized.
  • either only one connection or several connections can be established.
  • connection sections 14 are insulated from one another or that the snap disk 10 as a whole is insulated from the contacts 20, 21, 22, 23, 24, 25.
  • an insulating layer can be applied to the side of the support body 11 facing the contacts 20, 21, 22, 23, 24, 25 or the support body 11 can be divided into insulated segments.
  • the collective contact 25 is arranged centrally and the switching contacts 21, 22, 23, 24 are distributed around it, with both the collective contact 25 and the switching contacts 21, 22, 23, 24 forming web-shaped sections 26 or webs 26.
  • the webs 26 of the collective contact 25 extend radially outwards in a beam shape and the webs 26 of the switching contacts 21, 22, 23, 24 extend radially inwards, with a web 26 of a switching contact 21, 22, 23, 24 being provided between each two webs 26 of the collective contact 25, so that they overlap in the circumferential direction in an annular contact area.
  • circuit 30 In addition to the connection of the circuit 30 to the contacts 21, 22, 23, 24, 25 according to Figures 1 and 2, a partial equivalent circuit diagram (40) is also shown.
  • the circuit 30 provides that a measuring line with a voltage divider each consisting of a shunt resistor R1 - R4 and a measuring resistor R5 - R6 is provided for each switching contact 21, 22, 23, 24.
  • the voltage applied to the measuring resistor R5 - R6 is determined by means of the voltage measuring device, whereby the voltage measuring device 35, which is designed as a control unit in this case, has an input 31 - 34 for each measuring line, so that the respective voltage applied to the measuring resistor R5 - R6 can be detected.
  • Different sizes or resistance values are provided for the shunt resistors R1 - R4 and the measuring resistors R5 - R6, so that when a connection is closed between the respective switching contact 21 - 24 and the collective contact 25, an individual voltage is generated that can be assigned to the connection.
  • the variant according to Figure 4 corresponds essentially to the embodiment of Figure 3.
  • the switching contacts 21 - 24 can be combined in switching contact groups, in which case an evaluation of the switching contact groups is sufficient.
  • two switching contact groups are provided, each switching contact group having two switching contacts 21 - 24 connected to one another.
  • a first switching contact group therefore comprises the switching contacts 21, 23 which are in contact with one another
  • a second switching contact group comprises the switching contacts 22, 24 which are in contact with one another.
  • a measuring strand is assigned to each of the two switching contact groups, and a voltage measuring device 35 with two inputs 31, 32 is sufficient.
  • the invention is not limited in its implementation to the preferred embodiments given above. Rather, a number of variants are conceivable which also make use of the solution presented in fundamentally different embodiments.

Landscapes

  • Push-Button Switches (AREA)

Abstract

L'invention concerne un disque à encliquetage (10) pour la mise en contact électrique séparée d'une pluralité de contacts (20) qui se trouvent dans un premier plan et sont isolés les uns par rapport aux autres, le disque à encliquetage (10) ayant un corps de support (11) destiné à fournir un support sur une surface se trouvant dans le premier plan, un corps de déformation (12) relié à celui-ci et une pluralité de ponts de contact (13) disposés à distance du corps de support (11) sur le corps de déformation (12) et isolés l'un par rapport à l'autre, le corps de déformation (12) étant conçu pour maintenir les ponts de contact (13) dans un état stable non déformé dans un deuxième plan espacé du premier plan et à se déformer élastiquement dans la direction du premier plan, par l'intermédiaire d'une force (K) agissant à partir du deuxième plan dans la direction du premier plan, dans un état déformé, instable ou métastable dans lequel les ponts de contact (13) se trouvent dans ou sur le premier plan, les ponts de contact (13) étant chacun conçus, à l'état déformé, pour connecter électriquement au moins deux des contacts (20) isolés l'un par rapport à l'autre.
EP24735986.2A 2023-08-10 2024-06-21 Disque à encliquetage et agencement de disque à encliquetage Pending EP4681237A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102023121463.2A DE102023121463A1 (de) 2023-08-10 2023-08-10 Schnappscheibe und Schnappscheibenanordnung
PCT/EP2024/067437 WO2025031657A1 (fr) 2023-08-10 2024-06-21 Disque à encliquetage et agencement de disque à encliquetage

Publications (1)

Publication Number Publication Date
EP4681237A1 true EP4681237A1 (fr) 2026-01-21

Family

ID=91664511

Family Applications (1)

Application Number Title Priority Date Filing Date
EP24735986.2A Pending EP4681237A1 (fr) 2023-08-10 2024-06-21 Disque à encliquetage et agencement de disque à encliquetage

Country Status (4)

Country Link
EP (1) EP4681237A1 (fr)
CN (1) CN121153094A (fr)
DE (1) DE102023121463A1 (fr)
WO (1) WO2025031657A1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007027218A1 (de) * 2007-06-13 2008-12-18 Leopold Kostal Gmbh & Co. Kg Elektrischer Schalter
US10460890B2 (en) * 2017-06-13 2019-10-29 Trent Zimmer Multi-pole dome switch
EP3679595B1 (fr) 2017-09-08 2021-04-21 Sateco AG Ensemble bouton
FR3103310B1 (fr) * 2019-11-20 2021-11-19 Apem Interrupteur multipolaire

Also Published As

Publication number Publication date
CN121153094A (zh) 2025-12-16
DE102023121463A1 (de) 2025-02-13
WO2025031657A1 (fr) 2025-02-13

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