WO2013020236A1 - Dispositif de saisie - Google Patents

Dispositif de saisie Download PDF

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Publication number
WO2013020236A1
WO2013020236A1 PCT/CH2011/000178 CH2011000178W WO2013020236A1 WO 2013020236 A1 WO2013020236 A1 WO 2013020236A1 CH 2011000178 W CH2011000178 W CH 2011000178W WO 2013020236 A1 WO2013020236 A1 WO 2013020236A1
Authority
WO
WIPO (PCT)
Prior art keywords
membrane
handle
input device
sensing electrodes
sensing
Prior art date
Application number
PCT/CH2011/000178
Other languages
English (en)
Inventor
Thomas Mark SCHMIDHÄUSLER
Christoph Georg ROMER
Manuel Aschwanden
Damian Maria Schneider
Original Assignee
Optotune Ag
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 Optotune Ag filed Critical Optotune Ag
Priority to PCT/CH2011/000178 priority Critical patent/WO2013020236A1/fr
Publication of WO2013020236A1 publication Critical patent/WO2013020236A1/fr

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G9/00—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously
    • G05G9/02—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only
    • G05G9/04—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously
    • G05G9/047—Manually-actuated control mechanisms provided with one single controlling member co-operating with two or more controlled members, e.g. selectively, simultaneously the controlling member being movable in different independent ways, movement in each individual way actuating one controlled member only in which movement in two or more ways can occur simultaneously the controlling member being movable by hand about orthogonal axes, e.g. joysticks
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0338—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of limited linear or angular displacement of an operating part of the device from a neutral position, e.g. isotonic or isometric joysticks
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/965—Switches controlled by moving an element forming part of the switch
    • H03K17/975—Switches controlled by moving an element forming part of the switch using a capacitive movable element
    • H03K17/98—Switches controlled by moving an element forming part of the switch using a capacitive movable element having a plurality of control members, e.g. keyboard
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2239/00—Miscellaneous
    • H01H2239/006—Containing a capacitive switch or usable as such

Definitions

  • the invention relates to an input device, to a use of said input device, and to a method for its manu ⁇ facturing according to the preamble of the independent claims.
  • Such an input device can in particular be used as a joystick and/ or in gaming applications.
  • Input devices for converting mechanical displacements into electrical signals must meet restrictive cost and space requirements for applications such as mobile telephones, smartphones, and other portable elec- tronics.
  • FR 2933605 discloses an input device for paraplegic patients relying on rigid stress sensors to measure the position of a handle which is connected to a membrane. These stress sensors measure the forces that result from defor ⁇ mations in the membrane when the handle is displaced.
  • the input device comprises a frame which can optionally comprise an opening or a similar aperture for passing through a handle.
  • a flexible membrane is arranged on or in said frame or in other ways held by the frame.
  • At least two flexible (e.g., rectangularly or T-shaped) sensing electrodes are arranged on or in said membrane. These sensing electrodes are used for measuring a strain of the membrane in a first direction X and in a second direction Y via a strain dependent electrical property of the sensing electrodes, e.g., its resistance or capaci- tance. These electrical properties are indicative of the position of the handle as it is discussed below.
  • the sensing electrodes can be arranged on only one side of the membrane or on two opposing sides of the membrane.
  • the handle can be arranged on or in the optional aperture of the frame and it is mechanically connected to the membrane.
  • the handle can be displaced in the first and second perpendicular directions X and Y. In doing so, the membrane is deformed in the corresponding direction (s) and the strain in the membrane is therefore changed by such a handle-displacement.
  • a corresponding change in the electrical property of the sensing electrode (s) can be measured and the handle-position can be derived from these measurements. Specifically, when the handle is displaced in the X-direction, the electrical property of the first sensing electrode is changed and when the handle is displaced in the Y-direction, the electrical property of the second sensing electrode is changed.
  • the sensing elec- trode(s) follow (s) these membrane deformations and one or both sensing electrode (s) is/ are elastically extended or compressed, thereby changing the electrical property of the sensing electrode (s) .
  • a rotation lim- iter with at least three arms is connected to the membrane and/ or to the handle. This rotation limiter engages a recess in the frame of the input device.
  • the recess and the rotation limiter are dimensioned and shaped such, that a linear displacement of the handle along the X- and/ or Y-direction ( s ) is possible, but that a rotation about the axis ⁇ is limited to a maximum rotation angle (e.g., ⁇ 20°), because otherwise the rotation limiter hits the edges of the recess.
  • a maximum rotation angle e.g., ⁇ 20°
  • the membrane is arranged in a plane which is parallel to the X- and Y-directions .
  • the input device can be designed more compact.
  • the sensing electrode is reversibly and elastically extendable by at least 20% of its original dimensions together with the membrane.
  • the electrode is not damaged when the in- put device is operated (i.e., the handle is displaced) and the elastic properties of the membrane are not or not substantially affected.
  • the handle is retained by the membrane in its zero or equilib- rium position (e.g., in the center of the opening in the frame) when no external forces are applied to the handle.
  • the handle is displaced from its zero position along the direction of the respective force against a resetting force of the membrane.
  • the membrane automatically resets the handle to its zero position.
  • the handle is self-centered by the membrane as soon as a user does not operate the input device .
  • the frame preferably comprises electrically conductive structures such as circuit paths and/ or conductive pads.
  • electrically conductive structures such as circuit paths and/ or conductive pads.
  • the frame can comprise a first support and a second support which are arranged on opposing sides of the membrane.
  • the membrane can be held more stable in the frame, e.g., by clamping and/ or gluing, and/ or welding.
  • an electrical connection of the sensing electrodes on both sides is simplified.
  • these two supports can be held together by a (e.g., metallic) clamp that can either be a separate part or it can advantageously at least in part be formed by the first support.
  • a (e.g., metallic) clamp that can either be a separate part or it can advantageously at least in part be formed by the first support.
  • the supports can be adjusted with respect to each other and/ or attached to each other by a fastener, e.g., by a snap-in fixture.
  • the handle, the recess, and the rotation limiter are arranged on the same side of the membrane. This has the advantage that space is saved on the opposing side where other parts can be placed.
  • the input device additionally to the first and the second sensing electrodes comprises a third and a fourth sensing electrode.
  • the four sensing electrodes are arranged such on the membrane that a displacement of the handle and thus a change in the strain of the membrane in the X-direction leads to a change in the electrical properties of the first and the third sensing electrodes. Accordingly, a displacement of the handle and a resulting change in the strain of the membrane in the Y-direction leads to a change in the electrical properties of the second and the fourth sensing electrodes.
  • a preferred example for such an arrangement is a basically "cross-hair-like" arrangement of the sensing electrodes with the first and the third sensing electrodes arranged one after another (consecutively) along the X-direction and the second and the fourth sensing electrodes arranged one after another along the Y- direction.
  • the first and the third sensing electrodes as well as the second and the fourth sensing electrodes are separated by a central gap portion.
  • the handle is then connected to this central gap portion of the membrane where no sensing electrodes are arranged, preferably in the center between the sensing electrodes which are arranged in the X- and Y-directions one after another.
  • a decoupled readout of the position signals of the handle in the X- und Y-directions is facilitated .
  • the input device additionally to the first to fourth sensing electrodes discussed above comprises a fifth sensing elec ⁇ trode arranged on one side of the membrane with the first to fourth sensing electrodes arranged on the other side of the membrane. Furthermore, in a projection along the Z-direction (perpendicular to the X-Y-plane) , the fifth sensing electrode at least partially (laterally, i.e., in the X-Y-plane) overlaps the first to fourth sensing electrodes.
  • a more precise, e.g., capacitive readout of the position of the handle by, e.g., a capacitance sensing circuit can be realized.
  • the (e.g., elongated) arms of the rotation limiter are arranged star-shaped around a central base of the rotation limiter.
  • three arms can be arranged radially around the central base at angles of 120° with respect to each other.
  • the arms of the rotation limiter do not overlap the sensing electrodes.
  • the elastic properties of the sensing electrodes are not or not substantially af- fected.
  • the rotation limiter comprises four arms that are arranged star- or X-shaped around a central base of the rotation limiter.
  • X-shaped in this respect means that the first and the third arm as well as the second and the fourth arm are arranged co-linearly (i.e., pointing into an antipar- allel direction) on opposing sides of the central base of the rotation limiter with angles of 90° between every pair of arms.
  • the whole rotation limiter can be ar- ranged at an angle with respect to the co-linearly arranged sensing electrodes, in particular at an angle of 45° around the rotation axis ⁇ .
  • the first and the third sensing electrodes are arranged along the X-direction
  • the second and the fourth sensing electrodes are arranged along the Y-direction
  • the arms of the X-shaped rotation limiter are, e.g., arranged at an angle of 45° around the axis ⁇ with respect to these directions between the sensing electrodes.
  • the arms of the ro ⁇ tation limiter can again advantageously be dimensioned such that they do not overlap the sensing electrodes.
  • a Z-displacement-sensor e.g., a dome switch
  • a dome switch is arranged on a side of the membrane opposing the side of the membrane on which the handle is arranged. Then, when the user presses down the handle along the minus Z- direction (i.e., towards the membrane), the displacement of the handle in the Z-direction is mechanically transferred to the dome switch and the dome switch or at least the top part of the dome switch is deformed and an electrical contact inside the dome switch is shorted. This can be detected by the readout electronics.
  • An alternative Z-displacement-sensor can be arranged on any side of the membrane. Thus, a third degree of freedom can be added to the input device.
  • an addi- tional plate can be arranged between the dome switch and the membrane for aiding in transferring a displacement in the Z-direction from the handle and the membrane to the dome switch and for protecting the membrane.
  • the re- cess in the frame of the input device and/ or the rotation limiter comprises soft edges.
  • soft edges in this respect means that a modulus of elasticity of the material at the rotation limiting contact surfaces between the recess in the frame and the rotation limiter is substantially smaller, in particular by at least a factor of 10, than that of the material of the frame and/ or the rotation limiter. This can, e.g., be achieved by coating these borders (contact surfaces) with a soft material like, e.g., silicone or rubber, or - in other words - with a material with a modulus of elasticity which is lower than that of the frame material and/ or the rotation limiter material.
  • the recess can fully extend through the whole frame or a whole support of the frame in the Z-direction instead of just comprising an undercut in the frame material.
  • manufacturing is simplified.
  • a use of an input device as described above for detecting a displacement of the handle in the X- and/ or Y- and/ or - where applicable - Z- direction(s) is disclosed.
  • the resistance and/ or capacitance values of the sensing electrodes are measured by a resistance sensing circuit and/ or a capacitance sensing circuit and the position of the handle can be derived from these measurements.
  • the electrode (s) may be applied after stretching the membrane or after attaching the membrane to the frame.
  • the electrodes should be stretched together with the membrane, i.e. the electrodes should be applied to the polymer film prior to stretching the same.
  • a plurality of input devices can be manufactured in parallel, using a single polymer film and cutting the same after attaching it to the re- spective frames.
  • Fig. 1 shows a perspective representation of an input device according to a first embodiment of the invention
  • fig. 2 shows a bottom view of a first support 10a with a recess of a frame as well as a clamp and a rotation limiter according to the first embodiment
  • fig. 3 shows a bottom view of a second sup- port as well as the clamp according to the first embodiment
  • fig. 4 shows a sectional view of the input device according to the first embodiment
  • fig. 5 shows a bottom view of the rotation limiter according to a second embodiment of the invention
  • fig. 6 shows a bottom view of a membrane with two sensing electrodes according to a third embodiment of the invention
  • fig. 7 shows an exploded assembly view of the input device according to the first embodiment of the invention
  • fig. 8 schematically shows an equivalent circuit diagram for a sensing electrode and a voltage-over- time-characteristics for a capacitance
  • fig. 9 shows a perspective representation of a handle, a protector, and a clamp which is formed by the support according to a fourth embodiment of the invention .
  • flexible membrane designates a flexible material body that has a thickness much smaller than its width and length, and that can be reversibly and elastically extended, along a direction perpendicular to its width, by at least 20% without being damaged.
  • a "large” surface defined by the membrane's width and length is referred to, specifically not an end face defined by the membrane's thickness in one direction.
  • the term designates a direction parallel to said plane
  • the term designates a direction parallel to a tangential plane to the membrane at a location of the membrane where the handle is connected.
  • terminologies "axial” and “perpendicular to the membrane” designate a direction perpendicular to all directions that are parallel to the membrane.
  • lateral is used to designate a direction perpendicular to the axial direction, i.e., a direction parallel to the membrane.
  • flexible electrode or, equiva- lently, “compliant electrode” for a sensing electrode on or in the membrane designates an electrode that can be reversibly and elastically extended together with the membrane by at least 20% without being damaged.
  • Figure 1 shows a perspective view of an input device according to a first embodiment of the invention.
  • a flexible membrane 20 with five elastic (i.e., extendable together with the membrane 20 by at least 20% with- out being damaged) sensing electrodes 21a, 21b, 21c, 21d, 21g (not visible in figure 1) is arranged in a plane and mounted between a first and a second support 10a, 10b of a frame 10. The two supports are held together by a clamp 14.
  • the clamp 14 is a separate metal piece, but it should be pointed out that the clamp 14 can also at least in part be formed by the first support 10a.
  • first support 10a to the second support 10b
  • second support 10b can consist of or comprise, e.g., a snap-in fixture.
  • the frame 10 comprises an opening 11 (not visible in figure 1) where a handle 30 is arranged.
  • This handle 30 is mechanically connected to the membrane 20 and it is dis- placeable in a first direction X and a second direction Y (arrows in figure 1) .
  • the handle 30 By displacing the handle 30, the strain in the membrane and accordingly the electrical properties of the sensing electrodes 21a, 21b, 21c, 21d, and 21g are changed similar to the illustration in figure 6 (see below) .
  • the handle 30 is rotatable around a rotation axis ⁇ perpendicular to said first and to said second directions X and Y, i.e., parallel to a third direction Z.
  • the maximum rotation angle of the handle 30 is limited, however, by a recess 12 in the frame 10 and a rotation limiter 40 connecting the handle 30 and the membrane 20.
  • the handle is retained in a zero position PQ in a center of the input device by the elastic properties of the membrane as long as no external force is applied to the handle. This is achieved by a pre- stretched membrane 20, i.e., a polymer film that is already pre-strained by, e.g., 20% in the X- and Y- directions, even when the handle 30 is in its zero- position Pg.
  • FIG. 2 shows a bottom view of the clamp 14, the first support 10a with its recess 12, its opening 11, and a conductive structure 13. Furthermore, the rotation limiter 40 with four arms 40a, 40b, 40c, and 40d and a part of the handle 30 as seen from below through the opening 11 are shown.
  • the rotation limiter 40 is connected to the membrane 20 (not shown here for clarity) at the bottom and to the handle 30 at its top.
  • the arms 40a, 40b, 40c, 40d eventually hit an edge 16 of the recess 12 and therefore prevent further rotation of the handle 30 as soon as a maximum allowed rotation angle (e.g., ⁇ 20°) is reached (dashed position) .
  • a maximum allowed rotation angle e.g., ⁇ 20°
  • Figure 3 shows a bottom view of the clamp 14 and the second support 10b according to the first embodiment of the invention.
  • FIG. 4 shows a sectional view of the input device.
  • the handle 30 is mechanically connected to the membrane 20 via the rotation limiter 40.
  • the membrane 20 with the sensing electrodes 21a-d (on the bottom side of the membrane) , and- 21g (on the top side of the membrane) is arranged between the first (top) support 10a and the second (bottom) support 10b of the frame 10.
  • a dome switch 50 is arranged below the membrane 20 for detecting a "click-action" by the user. In other words, when the user presses down the handle 30 (along minus Z) , the top part of the dome switch 50 is deformed, a contact inside the dome switch 50 is closed and a detection of the "click-action" becomes possible.
  • a plate 51 is arranged between the dome switch 50 and the membrane 20.
  • This plate 51 serves two functions: Firstly, the displacement of the handle 30 along the Z-direction is more reliably transferred to the dome switch 50 in cases when the handle 30 is already displaced in the X- and/ or Y- direction(s) prior to the displacement of the handle in the minus Z-direction. Secondly, the membrane 20 is mechanically protected by the plate 51 so that it is less prone to suffer from damage from the mechanical contact with the top part of the dome switch 50.
  • Fig. 7 shows an exploded assembly view of the input device according to the first embodiment of the invention.
  • the handle 30 is placed above the metal clamp 14 which is used to hold together the supports 10a and 10b of the frame 10.
  • the top support 10a comprises an opening 11 where the handle and/ or its connection to the membrane 20 is arranged.
  • the handle 30 is connected to the membrane 20 by the rotation limiter 40 with its four arms 40a, 40b, 40c, and 40d.
  • a fifth sensing electrode 21g (dotted, on the lateral side of the rectangularly shaped membrane 20, i.e., the fifth sensing electrode 21g lies lateral on the top side of the mem- brane 20) is arranged on the top side 20a of the membrane 20.
  • the first to fourth sensing electrodes 21a-21d are arranged around a central gap por- tion one after another along the X- and Y-directions , respectively, on the bottom side 20b of the membrane 20. These sensing electrodes 21a-21d are also electrically connected to the capacitance sensing circuit 60 (not shown) .
  • the handle 30 is moved laterally, the strain in the membrane is changed and correspondingly, the elec ⁇ trical properties of at least some of the first to fourth sensing electrodes 21a-21d are changed.
  • a capacitance between one of the bottom sensing electrodes 21a-21d and the common top sensing electrode 21g changes due to changing surface areas of the corresponding sensing electrodes. These capacitance values are measured by the capacitance sensing circuit 60 and the handle position can be derived from these measurements.
  • the arms 40a-40d of the rotation limiter 40 are affixed to the membrane such that they do not laterally overlap a sensing electrode 21a-21d, 21g.
  • the arms 40a-40d of the rotation limiter 40 engage the recess 12 with soft edges 16 in the support 10a and thus limit a rotational movement of the handle 30 to a maximum rotation angle around the axis ⁇ .
  • a dome switch 50 and a plate 51 are arranged on the bottom side 20b between the membrane 20 and the bot- torn support 10b of the frame 10. These devices provide a click-functionality, i.e., the input device can sense a pressing-down of the handle 30 as registered by the dome switch 50.
  • Sensing the electrode capacitances can be accomplished by employing standard capacitance readout circuits.
  • these measurements tend not to be very accurate.
  • Figure 8 shows a possible implementation of a capacitance readout circuit not as susceptible to deviations in Ri(t), as it is governed by the equation (dt/Ci + Ri) (with Uo being the voltage at position P ⁇ , Ci being the capacitance and Ri being the very small resistance value of the first finite equivalent circuit block, Q being a charge, Io being a constant charging current, and dt being a time interval) , a simpler, cheaper, lower resolution ADC (e.g., a threshold detector or comparator) can be used at position P ] _.
  • a simpler, cheaper, lower resolution ADC e.g., a threshold detector or comparator
  • the required time tg for charging the capacitance Ci (and with it the rest of the capacitors) up to a certain predetermined voltage level Uth can be measured (e.g., by a timer) with, e.g., microsecond precision, and the capacitance value C can be derived from this time measurement (figure 8).
  • a timer e.g., microsecond precision
  • the measurement is - in a first order approximation - furthermore independent of the resistance of the corresponding sensing electrodes 21a-21d, 21g.
  • Figure 5 shows a bottom view of a rotation limiter 40 according to a second embodiment of the invention.
  • the rotation limiter 40 comprises only three arms 40a, 40b, and 40c that are arranged star-shaped around the central base at angles of 120 degrees with respect to each other.
  • the recess 12 in the frame 10 is adapted to this three-armed rotation lim ⁇ iter 40. Otherwise, the functionality remains the same as in the first embodiment.
  • Figure 6 shows a bottom view of the membrane 20 with two sensing electrodes 21a, 21b according to a third embodiment of the invention.
  • the first embodiment of the invention which comprises five sensing electrodes 21a-21d, 21g on both sides of the membrane and a capacitive readout circuit, here, only two sensing electrodes 21a, 21b are arranged on the bottom side 20b of the membrane 20.
  • a resistance sensing circuit 60 measures the resistances of the sensing electrodes 21a and 21b. These resistances (electrical properties) change as the strain in the membrane 20 is changed by a displacement of the handle 30 (position indicated by a circle) . The handle position can then be derived from these measurements.
  • a surface area of the sensing electrode 21a is extended (and therefore the resistance increases) whereas a surface area (and hence the resistance) of the sensing electrode 21b stays essentially the same.
  • the basic functionality re- mains the same for any number of sensing electrodes, specifically for five sensing electrodes 21a-21d, 21g as in the first embodiment of the invention.
  • a capacitance sensing circuit and a fifth sensing electrode 21g on the opposing side of the membrane 20 is used in the first embodiment.
  • Figure 9 shows a perspective representation of a handle 30, a protector 31, and a clamp 14 which is formed by the support 10a. Furthermore, the recess 12 with its soft edges 16 fully extends through the support 10a (and the clamp 14) in the third direction Z. An additional visual protector 31 and/ or protector 31 against dirt is arranged axially between the handle 30 and the support 10a.
  • the fourth embodiment is equivalent to the first embodiment.
  • the flexible sensing electrodes on the flexible membrane should be compliant, i.e., it should be able to follow the deformations of the membrane elastically and reversibly without being damaged.
  • the sensing electrodes therefore consist of or comprise at least one of the following materials:
  • Metallic powders in particular metallic nanoparticles (Gold, silver, copper) - Conducting polymers (intrinsically conducting or composites)
  • the sensing electrodes may be deposited by means of any of the following techniques:
  • the membrane may at least partially com- prise conductive materials (such as mentioned above) .
  • the material for the handle, the frame, and the rotation limiter can, e.g., comprise or consist of:
  • the material for the membrane can, e.g., comprise or consist of:
  • the input device disclosed above can be used for detecting a displacement of the handle along the first and or second direction (s) X, Y.
  • it can also be used for detecting a displacement of the handle along the third direction Z.
  • the device can be used in a large variety of applications, such as:
  • the deformation of the polymer film/ membrane 20 depends on the material properties such as elastic modulus of the material used, the shape of the material, as well as the boundary conditions.
  • the shape of the frame, handle as well as of the membrane 20 and the sensing electrodes can be adapted to various applications.
  • the sensing elec ⁇ trodes, the membrane 20, the frame 10 as well as the handle 30 can be of any suitable shape and, e.g., be triangular, rectangular, circular, linear or polygonal.
  • the sensing electrodes 21a-d, 21g can have rectangular, annu- lus, or another suitable shape.
  • the invention is not limited to the shapes of the membrane 20 as described above. Indeed, other shapes could be defined for achieving mechanical displacement sensing and selection functionality.
  • the sensing electrodes are arranged on a surface of the membrane.
  • the sensing electrodes can be embedded within the membrane 20, i.e. if the membrane 20 is made from several polymer films laminated to each other with at least a part of the sensing electrodes between them.
  • the frame 10 and/ or clamp 14 can also serve for electromagnetic shielding purposes, i.e., electromagnetic interferences that can hamper a reliable readout of the handle position can at least partly be shielded by the frame 10.
  • An optional visual protector 31 and or pro ⁇ tector 31 against dirt can be arranged between the handle 30 and the frame 10, as, e.g., shown in Fig. 9.
  • the input device according to the invention can be realized more compact than other devices, e.g., with an overall height of 1.2-1.5 mm.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Human Computer Interaction (AREA)
  • Position Input By Displaying (AREA)

Abstract

L'invention concerne un dispositif de saisie doté d'un cadre (10) et d'une poignée (30) qui est interconnectée à une membrane souple (20) comportant au moins deux électrodes de détection (21a, 21b). Lors d'un déplacement de la poignée (30), la membrane (20) et les électrodes de détection (21a, 21b) sont déformées élastiquement et les électrodes de détection (21a, 21b) subissent un changement de leurs propriétés électriques qui correspond aux changements de déformation de la membrane (20). Un limiteur de rotation (40) est relié à la poignée (30) et/ou à la membrane (20) et il vient en prise avec un évidement dans le cadre (10) pour limiter la rotation de la poignée (30) à un angle de rotation maximal et pour empêcher un étirement excessif en rotation de la membrane. Ceci aide à protéger la membrane (20) et les électrodes de détection (21a, 21b) d'un endommagement mécanique.
PCT/CH2011/000178 2011-08-08 2011-08-08 Dispositif de saisie WO2013020236A1 (fr)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014105177A1 (de) * 2014-03-18 2015-10-08 Preh Gmbh Bedienelement mit elastisch verformbarem Betätigungsteil und Kraftsensorenmatrix
CN105584437A (zh) * 2014-11-06 2016-05-18 大众汽车有限公司 用于至少一个可电控制的装置的操作单元
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DE202022101792U1 (de) 2022-04-04 2022-04-11 Marquardt GmbH Schaltbedienanordnung
DE102022107979A1 (de) 2022-04-04 2023-10-05 Marquardt Gmbh Schaltbedienanordnung

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DE102014105177A1 (de) * 2014-03-18 2015-10-08 Preh Gmbh Bedienelement mit elastisch verformbarem Betätigungsteil und Kraftsensorenmatrix
DE102014105177B4 (de) * 2014-03-18 2021-03-25 Preh Gmbh Anordnung aus Blende und Bedienelement mit elastisch verformbarem Betätigungsteil und Kraftsensorenmatrix
DE102015116290B4 (de) 2014-09-30 2021-11-04 Preh Gmbh Bedienelement mit Kraftsensormatrix
CN105584437A (zh) * 2014-11-06 2016-05-18 大众汽车有限公司 用于至少一个可电控制的装置的操作单元
CN105584437B (zh) * 2014-11-06 2019-06-21 大众汽车有限公司 用于至少一个可电控制的装置的操作单元
WO2016131848A1 (fr) * 2015-02-17 2016-08-25 Marquardt Gmbh Dispositif de commande de commutation
CN107438888A (zh) * 2015-02-17 2017-12-05 马夸特有限责任公司 开关操作装置
US10298233B2 (en) 2015-02-17 2019-05-21 Marquardt Gmbh Switching control arrangement
DE202022101792U1 (de) 2022-04-04 2022-04-11 Marquardt GmbH Schaltbedienanordnung
DE102022107979A1 (de) 2022-04-04 2023-10-05 Marquardt Gmbh Schaltbedienanordnung

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