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WO2018105639A1 - Dispositif de présentation de sensation tactile - Google Patents

Dispositif de présentation de sensation tactile Download PDF

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Publication number
WO2018105639A1
WO2018105639A1 PCT/JP2017/043765 JP2017043765W WO2018105639A1 WO 2018105639 A1 WO2018105639 A1 WO 2018105639A1 JP 2017043765 W JP2017043765 W JP 2017043765W WO 2018105639 A1 WO2018105639 A1 WO 2018105639A1
Authority
WO
WIPO (PCT)
Prior art keywords
film
diaphragm
presentation device
detection unit
piezoelectric film
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.)
Ceased
Application number
PCT/JP2017/043765
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English (en)
Japanese (ja)
Inventor
橋本　順一
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.)
Murata Manufacturing Co Ltd
Original Assignee
Murata Manufacturing Co Ltd
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 Murata Manufacturing Co Ltd filed Critical Murata Manufacturing Co Ltd
Priority to JP2018555031A priority Critical patent/JPWO2018105639A1/ja
Publication of WO2018105639A1 publication Critical patent/WO2018105639A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means

Definitions

  • the present invention relates to a haptic presentation device that provides haptic feedback by transmitting vibration to a user.
  • Patent Document 1 discloses a structure in which an end portion of a thin plate-like diaphragm is connected to a piezoelectric film and stress is applied to the diaphragm.
  • the diaphragm vibrates in a direction (normal direction) perpendicular to the main surface due to expansion and contraction of the piezoelectric film. Since stress is applied to the diaphragm, it can be vibrated efficiently with respect to expansion and contraction of the piezoelectric film.
  • a touch sensor for detecting a user's touch operation is provided on the touch surface of the diaphragm.
  • the touch sensor include a membrane switch, a capacitive switch, a piezoelectric film type, and the like.
  • a film containing the membrane switch is attached to the touch surface of the diaphragm. Since the film including the switch needs to have a certain thickness, the vibration of the diaphragm is restrained to reduce the amplitude.
  • the heat of the user's finger may be transmitted to the piezoelectric film, and the touch operation may not be detected correctly.
  • an object of the present invention is to provide a tactile sense presentation device that appropriately detects a pressing operation of a user and appropriately vibrates a diaphragm.
  • the tactile sense presentation device of the present invention includes a film, a diaphragm, a touch detection unit, a push-in operation detection unit, and a drive unit.
  • the film is deformed in the surface direction by applying a voltage.
  • the diaphragm is connected to a film and is bent in the normal direction when the film is deformed in the surface direction.
  • the touch detection unit detects a touch operation on the diaphragm.
  • the push-in operation detection unit detects a touch operation on the diaphragm based on a voltage change of the film.
  • the drive unit applies a drive signal to the film when the touch detection unit detects the touch operation and the push operation detection unit detects the push operation.
  • the tactile presentation device When the user performs a touch operation, the tactile presentation device first detects the touch operation in the touch detection unit.
  • the user presses the diaphragm.
  • the film When the user pushes in the diaphragm, the film is deformed in the surface direction. Conversely, a film that deforms in the plane direction when a voltage is applied generates a voltage when the film is deformed in the plane direction. Therefore, the tactile sense presentation device detects a push-in operation by detecting a change in voltage.
  • the tactile sense presentation device applies drive vibration to the film to vibrate the diaphragm. In this structure, since there is a gap between the diaphragm and the piezoelectric film, the heat of the finger is not easily transmitted to the piezoelectric film, and the influence of pyroelectricity can be greatly reduced.
  • the tactile sense presentation device of the present invention presents the tactile sense only when the user deliberately presses the diaphragm, even when a switch that reacts by touching, such as a capacitive switch, is used. Can be performed. Also, when the tactile sense presentation device is a keyboard, it is possible to speed up character output when pressing is detected by waiting for input of a nearby key when the capacitive switch reacts. .
  • this electrostatic capacitance type switch can be incorporated in a diaphragm.
  • the tactile sensation presentation device does not need to attach a thick film to the diaphragm like a membrane switch, so that the vibration of the diaphragm is not constrained and the amplitude is not reduced.
  • examples of the film that deforms in the plane direction when a voltage is applied include a piezoelectric film, an electrostrictive film, an electret film, a composite film, and an electroactive polymer film. Moreover, it is good also as an aspect which affixes the material (for example, piezoelectric film) which has piezoelectricity on the main surface of the resin film which does not have piezoelectricity, and connects the said resin film to a diaphragm.
  • FIG. 1 is an external perspective view of a tactile presentation device 10.
  • FIG. FIG. 2A is a side view of the haptic presentation device 10
  • FIG. 2B is a front view of the haptic presentation device 10.
  • FIGS. 3A, 3 ⁇ / b> B, and 3 ⁇ / b> C are operation explanatory views of the tactile sense presentation device 10.
  • 1 is a block diagram illustrating a configuration of a tactile sense presentation device 10.
  • FIGS. 5A and 5B are block diagrams illustrating the configuration of the tactile sense presentation device 10 according to the first modification. It is a figure which shows the state of signal ON / OFF of each structure. It is a perspective view of 10 A of tactile sense presentation apparatuses. 8A and 8B are side views of the tactile presentation device 10A.
  • FIG. 1 is an external perspective view of a tactile sense presentation device 10 according to the first embodiment.
  • FIG. 2A is a side view of the tactile sense presentation device 10
  • FIG. 2B is a front view.
  • the tactile sense presentation device 10 includes a piezoelectric film 20 and a diaphragm 40.
  • the tactile sense presentation device 10 is a so-called keyboard.
  • a plurality of key images 80 are displayed on the surface of the diaphragm 40 at positions corresponding to the key arrangement.
  • the key image 80 is printed on the first main surface of the diaphragm 40.
  • the key image 80 may be printed on a film and the film may be attached to the first main surface of the diaphragm 40.
  • the diaphragm 40 is made of a material such as acrylic resin, PET, polycarbonate, glass epoxy, FRP (GFRP, CFRP, AFRP, DFRP, or XFRP), glass or metal.
  • a touch sensor 50 may be built in the diaphragm 40.
  • the touch sensor 50 is an example of a touch detection unit, and includes, for example, a capacitance sensor.
  • the diaphragm 40 has a rectangular shape in plan view. The diaphragm 40 has both ends in the length direction fixed to the piezoelectric film 20 on the second main surface.
  • the piezoelectric film 20 has a rectangular shape in plan view like the diaphragm 40.
  • the piezoelectric film 20 is made of, for example, polyvinylidene fluoride (PVDF).
  • PVDF polyvinylidene fluoride
  • the piezoelectric film 20 may be formed of a chiral polymer.
  • L-type polylactic acid (PLLA) is used as the chiral polymer.
  • PVDF is used for the piezoelectric film 20
  • PLLA is a highly permeable material. Therefore, if the electrode and diaphragm added to PLLA are transparent materials, when manufacturing functional parts that vibrate, etc. Since the internal state of the functional component can be visually confirmed, it is easy to manufacture. Moreover, the position of the key can be visually recognized even in a dark place by disposing a light source such as a light inside the functional component.
  • the piezoelectric film 20 is composed of PLLA, as shown in FIG. 2B, the piezoelectric film 20 is cut so that each outer periphery is approximately 45 ° with respect to the stretching direction, thereby forming a rectangular shape. Give piezoelectricity.
  • the diaphragm 40 is connected to the piezoelectric film 20 at the end in the length direction.
  • the piezoelectric film 20 is an example of a film that deforms in the plane direction when a voltage is applied. As shown in FIG. 2A, the diaphragm 40 is curved and protrudes on the opposite side (first main surface side) with respect to the second main surface on the side where the piezoelectric film 20 exists. The piezoelectric film 20 is fixed.
  • a hollow region 100 is formed between the diaphragm 40 and the piezoelectric film 20.
  • the side on which the diaphragm 40 is located is the front side (touch surface side) of the tactile presentation device 10, and the side on which the piezoelectric film 20 is disposed is the back side of the tactile sense presentation device 10.
  • the curved state of the vibration plate 40 is exaggerated for the sake of explanation, and actually, the main surface of the vibration plate 40 and the main surface of the piezoelectric film 20 are substantially parallel in appearance. It is.
  • the diaphragm 40 is fixed to the piezoelectric film 20 with the flat plate surface being curved. Therefore, it is fixed to the piezoelectric film 20 with bending stress applied as indicated by the white arrow F901 in FIG. Further, the piezoelectric film 20 is in a state in which a tensile force is applied in the length direction of the main surface of the piezoelectric film 20 as indicated by an outline arrow S901 in FIG.
  • FIG. 3 (A), 3 (B), and 3 (C) are operation explanatory views of the tactile sense presentation device 10.
  • FIG. 3A shows a state at the timing when the piezoelectric film 20 is contracted by the drive signal.
  • FIG. 3B shows a state where no drive signal is applied or the amplitude of the drive signal is zero.
  • FIG. 3C shows a state at the timing when the piezoelectric film 20 is extended by the drive signal.
  • FIG. 4 is a block diagram illustrating a configuration of the tactile sense presentation device 10.
  • the tactile sense presentation device 10 includes a touch sensor 50, a voltage detection circuit 81, a signal processing circuit 82, and a drive unit 83.
  • the touch sensor 50 is built in the diaphragm 40 and detects a user's touch operation.
  • the touch sensor 50 is arranged corresponding to the position of each key in the key image 80.
  • the touch sensor 50 first detects a touch operation.
  • the user intends to press the key, the user presses the diaphragm 40.
  • the piezoelectric film 20 extends in the length direction.
  • electric charges are generated.
  • the voltage detection circuit 81 detects electric charges (voltage) generated in the piezoelectric film 20.
  • the signal processing circuit 82 determines that the user's push-in operation has been performed when the voltage changes to a predetermined threshold value or more.
  • the signal processing circuit 82 applies a driving vibration to the piezoelectric film 20 to the driving unit 83, and thereby the diaphragm 40 is vibrated.
  • a threshold value it is good also as the same value with all the keys, and you may assign a different threshold value with a key.
  • the operability of the user can be improved by lowering the threshold for a key that is difficult to detect a press and increasing the threshold for a key that is easy to detect a press. Further, the user can obtain a tactile sensation similar to a mechanical switch by an operation of pushing.
  • the drive unit 83 applies a drive signal to the piezoelectric film 20 and applies an electric field in the first direction of the piezoelectric film 20
  • the piezoelectric film 20 moves to the diaphragm 40 as indicated by an arrow S 911 in FIG. Shrink along the direction perpendicular to the fixed end.
  • the diaphragm 40 is pulled in the central direction from a portion (end portion in the length direction) fixed to the piezoelectric film 20. Thereby, the diaphragm 40 is curved so as to protrude further forward as indicated by an arrow F911 in FIG.
  • the drive unit 83 applies a drive signal to the piezoelectric film 20 and applies an electric field in a second direction opposite to the first direction, the piezoelectric film 20 as shown by an arrow S912 in FIG. Extends along a direction orthogonal to the fixed end of the diaphragm 40.
  • the diaphragm 40 is pulled from the center to a place (end in the length direction) fixed to the piezoelectric film 20. Thereby, the diaphragm 40 is in a curved state in which the forward protrusion amount is reduced as indicated by an arrow F912 in FIG.
  • the vibration plate 40 changes to the state shown in FIG. 3A or the state shown in FIG. 3C based on the state shown in FIG. It vibrates along the direction (normal direction perpendicular to the main surface of the diaphragm 40). Thereby, the vibration according to the drive signal is transmitted to the user via the diaphragm 40.
  • the tactile sense presentation device 10 can vibrate the diaphragm 40 efficiently and can transmit a strong vibration to some extent even when a piezoelectric film is used.
  • the tactile sense presentation device 10 can be made thinner than vibration caused by a motor or the like.
  • the hollow region 100 may be filled with a soft resin such as a silicone gel having heat insulation properties to suppress the sound generated when the piezoelectric film 20 and the diaphragm 40 vibrate.
  • a soft resin such as a silicone gel having heat insulation properties to suppress the sound generated when the piezoelectric film 20 and the diaphragm 40 vibrate.
  • the tactile sense presentation device 10 of the present embodiment provides tactile feedback when the user pushes the diaphragm 40.
  • the tactile sense presentation device 10 deliberately pushes the diaphragm even when the touch sensor 50 uses a switch such as a capacitance-type switch that may react when touched. Only in this case, tactile sensation can be presented.
  • the touch-sensitive presentation device 10 since the touch-sensitive presentation device 10 has a gap between the diaphragm and the piezoelectric film with which the finger contacts, the influence of pyroelectricity due to the heat of the finger can be greatly reduced.
  • the capacitive switch can be built in the diaphragm 40.
  • the tactile sense presentation device 10 does not need to attach a thick film to the diaphragm like a membrane switch, so that the vibration of the diaphragm is not constrained and the amplitude is not reduced.
  • the film on which the key image 80 is printed is much thinner than the film with the built-in membrane switch, so that the vibration of the diaphragm 40 is not hindered.
  • the capacitive switch has no pyroelectricity, even if it is provided on the touch surface of the diaphragm 40 that the user touches (or the position close to the first main surface in the interior), the user's touch operation Can be detected appropriately.
  • FIGS. 5A and 5B are block diagrams showing the configuration of the tactile sense presentation device 10 according to the first modification.
  • FIG. 6 is a diagram illustrating a signal on / off state of each configuration.
  • the tactile sense presentation device 10 includes a switch 85 in addition to the configuration shown in FIG.
  • the switch 85 is connected to the piezoelectric film 20, the voltage detection circuit 81, and the drive unit 83.
  • the switch 85 selectively connects the electrode provided on the piezoelectric film 20 to the voltage detection circuit 81 or the drive unit 83.
  • the signal processing circuit 82 turns off the switch 85, the piezoelectric element 83, and the piezoelectric element 82 when the voltage detection circuit 81 detects the pushing operation of the user.
  • the film 20 and the voltage detection circuit 81 are electrically disconnected.
  • the signal processing circuit 82 detects the user's touch operation in the touch sensor 50 and the voltage detection circuit 81 detects the user's push-in operation.
  • the switch 85 is turned on to electrically connect the drive unit 83 and the piezoelectric film 20. Immediately after a signal is output from the drive unit 83 to the piezoelectric film 20, the switch 85 is switched from the state shown in FIG. 5B to the state shown in FIG.
  • the switch may be connected between the driving unit and the piezoelectric film, or between the piezoelectric film and the voltage detection circuit, and the on / off thereof may be controlled by the CPU.
  • FIG. 5B it is desirable to have one of these switches (3-terminal type).
  • FIG. 7 is a perspective view of a tactile sense presentation device 10A according to a modification.
  • 8A and 8B are side views of the tactile presentation device 10A.
  • the spacer 70 has a prismatic shape that is long in the width direction of the tactile sense presentation device 10.
  • the spacer 70 is made of, for example, metal, PET, polycarbonate (PC), or ABS resin.
  • the spacer 70 is sandwiched between the lower surface of the diaphragm 40 and the upper surface of the piezoelectric film 20.
  • the spacer 70 pushes the piezoelectric film 20 downward to apply tension.
  • the diaphragm 40 may project in the normal direction as shown in FIG. 8A without applying a drive signal to the piezoelectric film 20 (steady state), or as shown in FIG. 8B. , It may be in a flat state. The diaphragm 40 may protrude downward without applying a drive signal to the piezoelectric film 20 (steady state).
  • tactile feedback is performed when the user pushes the diaphragm 40.
  • a touch detection unit such as a capacitive switch
  • the user intentionally moves the diaphragm.
  • the tactile sensation can be presented only when pushed.
  • the capacitive switch can be incorporated in the diaphragm.
  • a piezoelectric film is shown as an example of a “film that deforms in a plane direction when a voltage is applied”, but a “film that deforms in a plane direction when a voltage is applied” is limited to a piezoelectric film. is not.
  • Other examples of the “film that deforms in the plane direction when a voltage is applied” include an electrostrictive film, an electret film, a composite film, and an electroactive polymer film.
  • the electroactive film is a film that generates stress by electrical driving or a film that generates displacement by deformation.
  • the piezoelectric film 20 is directly connected to the vibration plate 40 .
  • the piezoelectric film 20 is indirectly connected to the vibration plate 40 via another resin film that does not have piezoelectricity. It is good also as an aspect made.
  • the piezoelectric film 20 may be attached to the main surface of the resin film, and the end of the resin film may be connected to the vibration plate 40.
  • a film such as an electrostrictive film, an electret film, a composite film, or an electroactive polymer film is attached to the main surface of the resin film, and the end of the resin film is connected to the diaphragm 40. It is also possible to adopt an aspect.
  • the present invention can be applied even to a unimorph type vibration structure in which a piezoelectric film and a diaphragm are bonded.
  • the present invention is also applicable to a horizontally driven structure as disclosed in WO2016 / 067832. Since the piezoelectric film is arranged on the non-operation surface side of the diaphragm, the heat of the finger is hardly transmitted to the piezoelectric film.
  • the “film that deforms in the plane direction when a voltage is applied” can be realized by using, for example, piezoelectric ceramics and a resin film.
  • it can be realized by connecting a plurality of resin films via piezoelectric ceramics and connecting each of the plurality of resin films to the diaphragm 40.
  • the “film that deforms in the plane direction when a voltage is applied” may be a single layer or may be laminated. In particular, stronger vibration can be obtained by increasing the number of stacked layers.
  • the vibration structure shown in the present embodiment can be applied to a speaker.
  • the diaphragm when the user applies pressure, the diaphragm emits a sound by vibrating in the normal direction for a certain time at an audible frequency.
  • the signal processing circuit 82 may output a signal for haptic presentation and then output a signal having an audible frequency to sound a security buzzer.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • User Interface Of Digital Computer (AREA)
  • Position Input By Displaying (AREA)
  • Input From Keyboards Or The Like (AREA)

Abstract

La présente invention concerne un dispositif de présentation de sensation tactile qui détecte de manière appropriée une opération de pression effectuée par un utilisateur et amène de manière appropriée une plaque de vibration à vibrer. Ce dispositif de présentation de sensation tactile est équipé d'un film, d'une plaque de vibration, d'une unité de détection tactile, d'une unité de détection d'opération de pression et d'une unité d'entraînement. Le film se déforme dans la direction de la surface lorsqu'une tension est appliquée. La plaque de vibration est reliée au film, et fléchit dans la direction normale lorsque le film se déforme dans la direction de la surface. L'unité de détection tactile détecte des opérations tactiles par rapport à la plaque de vibration. L'unité de détection d'opération de pression détecte une opération de pression par rapport à la plaque de vibration sur la base d'un changement de tension dans le film. Lorsqu'une opération tactile est détectée par l'unité de détection tactile et qu'une opération de pression est détectée par l'unité de détection d'opération de pression, l'unité d'entraînement applique un signal d'entraînement au film.
PCT/JP2017/043765 2016-12-07 2017-12-06 Dispositif de présentation de sensation tactile Ceased WO2018105639A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2018555031A JPWO2018105639A1 (ja) 2016-12-07 2017-12-06 触覚提示装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016-237209 2016-12-07
JP2016237209 2016-12-07

Publications (1)

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WO2018105639A1 true WO2018105639A1 (fr) 2018-06-14

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PCT/JP2017/043765 Ceased WO2018105639A1 (fr) 2016-12-07 2017-12-06 Dispositif de présentation de sensation tactile

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025138927A1 (fr) * 2023-12-29 2025-07-03 博泰车联网科技(上海)股份有限公司 Procédé de commande tactile perceptive basé sur un panneau de véhicule, appareil et support de stockage

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013131110A (ja) * 2011-12-22 2013-07-04 Kddi Corp タッチパネル、電話機
WO2013105518A1 (fr) * 2012-01-13 2013-07-18 京セラ株式会社 Appareil électronique et procédé de commande d'appareil électronique
JP2013242814A (ja) * 2012-05-22 2013-12-05 Kyocera Corp 電子機器
WO2015053247A1 (fr) * 2013-10-08 2015-04-16 株式会社村田製作所 Dispositif de présentation de détection tactile
JP2015125666A (ja) * 2013-12-27 2015-07-06 京セラドキュメントソリューションズ株式会社 表示入力装置、情報処理装置
WO2016067832A1 (fr) * 2014-10-27 2016-05-06 株式会社村田製作所 Dispositif de présentation tactile

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013131110A (ja) * 2011-12-22 2013-07-04 Kddi Corp タッチパネル、電話機
WO2013105518A1 (fr) * 2012-01-13 2013-07-18 京セラ株式会社 Appareil électronique et procédé de commande d'appareil électronique
JP2013242814A (ja) * 2012-05-22 2013-12-05 Kyocera Corp 電子機器
WO2015053247A1 (fr) * 2013-10-08 2015-04-16 株式会社村田製作所 Dispositif de présentation de détection tactile
JP2015125666A (ja) * 2013-12-27 2015-07-06 京セラドキュメントソリューションズ株式会社 表示入力装置、情報処理装置
WO2016067832A1 (fr) * 2014-10-27 2016-05-06 株式会社村田製作所 Dispositif de présentation tactile

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025138927A1 (fr) * 2023-12-29 2025-07-03 博泰车联网科技(上海)股份有限公司 Procédé de commande tactile perceptive basé sur un panneau de véhicule, appareil et support de stockage

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