WO2012090847A1 - Dispositif d'émission d'oscillation et dispositif de présentation de sensation tactile - Google Patents

Dispositif d'émission d'oscillation et dispositif de présentation de sensation tactile Download PDF

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Publication number
WO2012090847A1
WO2012090847A1 PCT/JP2011/079768 JP2011079768W WO2012090847A1 WO 2012090847 A1 WO2012090847 A1 WO 2012090847A1 JP 2011079768 W JP2011079768 W JP 2011079768W WO 2012090847 A1 WO2012090847 A1 WO 2012090847A1
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WIPO (PCT)
Prior art keywords
vibration
touch panel
vibration generating
piezoelectric
piezoelectric actuator
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PCT/JP2011/079768
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English (en)
Japanese (ja)
Inventor
森田亘
宇波俊彦
加賀山健司
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株式会社村田製作所
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Publication of WO2012090847A1 publication Critical patent/WO2012090847A1/fr

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    • 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
    • G06F3/016—Input arrangements with force or tactile feedback as computer generated output to the user
    • 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
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means

Definitions

  • the present invention relates to a vibration generating device for giving a tactile sensation according to an operation to an operator, and a tactile sensation providing device including the vibration generating device.
  • Patent Literature 1 and Patent Literature 2 there are those equipped with a tactile sense presentation device.
  • the tactile sense presentation device is a device that provides a mechanical sense (force sense) or the like by vibrating the touch panel, for example, when the operator touches the touch panel with a finger.
  • each of the four side surfaces of the rectangular touch panel is arranged at the center of each of the four side surfaces so as to face each other and displaced in the normal direction of the main surface
  • An actuator is provided. And by driving these actuators, the touch panel is vibrated along the main surface.
  • Patent Document 2 includes an actuator arranged on the back surface of a rectangular touch panel in plan view.
  • the actuator is arranged so that the direction orthogonal to the main surface of the touch panel is the vibration direction, and the touch panel is vibrated in the direction orthogonal to the main surface by driving the actuator.
  • the touch panel can be vibrated only in two orthogonal directions, and the touch panel is uniformly vibrated, so that only a simple tactile sense can be given to the operator. .
  • noise may be generated from the touch panel because the touch panel is vibrated in a direction orthogonal to the main surface.
  • an object of the present invention is to realize a tactile sensation presentation apparatus that can reduce generation of noise and give a complex tactile sense to an operator, and a vibration generation apparatus that constitutes the tactile sense presentation apparatus.
  • the present invention relates to a vibration generating device including a base, a vibration transmitting means, and a vibration generating means.
  • the vibration transmitting means has a main surface and is movably supported with respect to the base.
  • the vibration generating means includes a mechanism that relatively displaces the base body and the vibration transmitting means at least in the direction along the main surface.
  • the vibration generating means is arranged so as to generate a couple having a rotation axis in the normal direction of the main surface between the base and the vibration transmitting means.
  • the vibration transmitting means vibrates in an arc shape around the rotation axis in the main surface relative to the base.
  • the vibration generator of the present invention preferably has the following configuration.
  • a plurality of vibration generating means are arranged, and can be driven so that the driving force direction components of the plurality of vibration generating means are parallel to each other along the main surface.
  • At least two vibration generating means of the plurality of vibration generating means can be driven so as to have driving force direction components parallel to each other.
  • These at least two vibration generating means are installed at a predetermined distance in a direction perpendicular to the displacement direction components parallel to each other.
  • at least two vibration generating means can generate different driving forces.
  • This configuration shows a more detailed configuration for realizing the arc-shaped vibration described above.
  • the base body and the vibration transmitting means are connected by a connecting member that can be relatively rotationally displaced at a plurality of rotation centers at least in the normal direction of the main surface.
  • a connecting member that can be relatively rotationally displaced at a plurality of rotation centers at least in the normal direction of the main surface.
  • the connecting member has a structure capable of being linearly displaced relatively in a direction orthogonal to the mutually parallel displacement direction components.
  • this structure the detailed structure of the connection member is shown.
  • the connecting member is preferably an elastic means. In this configuration, a specific low material of the connecting member is shown.
  • the vibration generating device of the present invention it is preferable to include a control means for controlling the direction and amount of the driving force according to the couple in driving the vibration generating means.
  • the vibration generator of the present invention includes a vibration transmitting means, a vibration generating means, and a fixing member on the base.
  • the vibration transmitting means is movably supported with respect to the base and has a rectangular flat plate shape.
  • the vibration transmitting means has sides that oppose each other.
  • the at least two vibration generating means are respectively installed at positions other than the substantially central position of the side of the vibration transmitting means opposite to each other, and vibrate in a direction along the surface of the vibration transmitting means.
  • the fixing member fixes a predetermined position of the vibration generating unit with respect to the housing.
  • the vibration generating means vibrates in a direction parallel to the surface of the rectangular plate-shaped vibration transmitting means.
  • the vibration generating means is fixed to the base body by the fixing member, the vibration generated by the vibration generating means acts on the vibration transmitting means, and the vibration transmitting means vibrates in a direction parallel to the surface.
  • the connection position between the vibration transmitting means and the vibration generating means is a position excluding the substantially central position of the side of the rectangular flat plate, the surface of the vibration transmitting means is linearly vibrated depending on the installation position and the number of installed vibration generating means. Or it becomes possible to make it circular arc vibration.
  • the at least two vibration generators are respectively arranged at positions excluding the substantially central position of the side of the vibration transmitter, and the vibration transmitter is provided at both ends in the longitudinal direction of the vibration transmitter. It is preferable that they are arranged so as to vibrate substantially parallel to the lateral direction.
  • vibration along the short direction generated by the vibration generating means acts on both ends in the longitudinal direction of the vibration transmitting means. Therefore, even if the vibrations have the same strength, the amplitude of the vibration transmitting means can be made larger than the vibration generating means disposed near the center in the longitudinal direction of the vibration transmitting means. Thereby, a vibration transmission means can be vibrated effectively large.
  • the vibration generating means is preferably a piezoelectric actuator.
  • This configuration shows a specific configuration of the vibration generating means.
  • the vibration generating means can be downsized.
  • the vibration generator of the present invention preferably has the following configuration.
  • the piezoelectric actuator has a structure including a flat elastic plate and a piezoelectric element disposed on at least one surface of the elastic plate facing each other.
  • the piezoelectric actuator is disposed so that the piezoelectric element mounting surface of the elastic plate is orthogonal to the surface of the vibration transmitting means, the elastic plate can generate a restoring force between the base and the vibration transmitting means, and It functions as a connecting member that can absorb the difference in displacement between the displacement of the piezoelectric actuator and the rotational displacement.
  • This configuration shows the specific configuration and arrangement of the piezoelectric actuator. With this configuration, the vibration generating means can be reduced in size and thickness.
  • piezoelectric actuator of the vibration generator of the present invention it is preferable that piezoelectric elements are respectively disposed on both surfaces of the elastic plate facing each other.
  • the piezoelectric actuator can be formed with a bimorph structure.
  • the piezoelectric actuator of the vibration generator of the present invention has a rectangular flat plate-like elastic plate, one end in the longitudinal direction of the elastic plate is fixed to the fixing member, and the other end of the elastic plate is fixed to the vibration transmitting means. It is preferable that
  • This configuration shows a specific configuration in which the piezoelectric actuator is connected to the housing (fixing member) and the vibration transmission means, and one end is fixed to the fixing member and the other end is fixed to the vibration transmission means.
  • the case of structure is shown.
  • both ends of the elastic plate in the longitudinal direction are fixed to the fixing member, and the approximate center of the elastic plate in the longitudinal direction is fixed to the vibration transmitting means.
  • This configuration shows a specific configuration in which the piezoelectric actuator is connected to the housing (fixing member) and the vibration transmission means. Both ends are fixed to the fixing member, and the intermediate portion is fixed to the vibration transmission means. The case of structure is shown.
  • the present invention also relates to a tactile presentation device, which includes the above-described vibration generator and uses a touch panel as vibration transmission means.
  • the touch panel of the tactile presentation device of the present invention has translucency. This configuration shows specific optical characteristics of the touch panel.
  • the shape of the main surface of the touch panel is a rectangular flat plate. In this configuration, a specific shape example of the touch panel is shown.
  • FIG. 1 is a plan view showing a configuration of a haptic presentation device 10 in which a vibration transmission means is a touch panel in the vibration generator according to the first embodiment of the present invention.
  • 3 is a three-side view of the piezoelectric actuator 20.
  • FIG. It is an enlarged view of the installation part of piezoelectric actuator 20B2.
  • It is a block diagram which shows the main structures of the vibration control circuit of the tactile sense presentation apparatus 10 which concerns on the 1st Embodiment of this invention. It is a figure explaining the 1st behavior of tactile sense presentation device 10 concerning a 1st embodiment of the present invention. It is a figure explaining the 2nd behavior of the tactile sense presentation device 10 concerning the 1st embodiment of the present invention.
  • FIG. 10 It is a figure explaining the 3rd behavior of tactile sense presentation device 10 concerning a 1st embodiment of the present invention. It is a top view which shows the structure of 10 A of tactile sense presentation apparatuses whose vibration transmission means is the touch panel 100 in the vibration generator which concerns on the 2nd Embodiment of this invention. It is an enlarged view of the installation part of piezoelectric actuator 21B2. It is a top view which shows schematic structure and the example of behavior of the tactile sense presentation apparatus 10D which concerns on the 3rd Embodiment of this invention. It is a top view which shows schematic structure and the example of behavior of the tactile sense presentation apparatus 10E which concerns on the 4th Embodiment of this invention. 4 is a diagram illustrating a concept for giving a set displacement to the touch panel 100. FIG.
  • FIG. 1 is a plan view showing a configuration of a haptic presentation device 10 in which the vibration transmission means is a touch panel 100 in the vibration generator according to the present embodiment.
  • the vibration transmission means is a touch panel 100 in the vibration generator according to the present embodiment.
  • description of the main control circuit board of the front side housing, the liquid crystal panel, and the backlight module of the tactile sense presentation device 10 is omitted.
  • the touch panel 100 used as the "vibration transmission means" of this invention only the external shape is described with the dotted line.
  • the tactile sensation presentation device 10 includes a back side housing 101 having a substantially rectangular shape in plan view as a base.
  • the back side housing 101 includes a flat back plate and a side plate formed along the side of the back plate.
  • the side plate is formed in a shape extending at a predetermined height from the outer periphery of the back plate when the back plate is viewed in plan to a direction orthogonal to the plane of the back plate. With this structure, a recess having a predetermined depth surrounded by the side plate is formed in the back side housing 101.
  • a support plate 102A is installed at one end in the longitudinal direction (lateral direction in FIG. 1) of the back-side housing 101 in the recess of the back-side housing 101, and a support plate 102B is installed at the other end. .
  • the support plates 102A and 102B are support members.
  • the support plates 102A and 102B are fixed to the back side housing 101.
  • the support plates 102A and 102B are fixed so as to have a predetermined interval with respect to the side plate of the rear housing 101. Further, the support plates 102A and 102B are fixed so that the short side direction (vertical direction in FIG. 1) of the back side casing 101 is the longitudinal direction of itself.
  • the support plates 102A and 102B are piezoelectric actuators 20A1, 20A2, 20B1, and 20B2 and fixing members 30A1, 30A2, 30B1, and 30B2 described below with respect to the side plate of the rear case 101 in the longitudinal direction of the support plates 102A and 102B.
  • a periodic driving force can be generated as the vibration generating means, not only the piezoelectric actuators 20A1, 20A2, 20B1, and 20B2 using the piezoelectric principle, but also an actuator and shape memory using an electromagnetic force.
  • An actuator using an element, an artificial muscle type actuator, or the like can be used as appropriate.
  • the periodic driving force in the present invention is not limited to a sinusoidally continuously changing driving force, but a driving force that changes discontinuously, such as a pulse shape or a sawtooth shape, and a combination thereof. Widely include.
  • the connecting member absorbs a difference in displacement direction and displacement amount between the displacement of the actuator and the relative rotational displacement of the back side housing 101 and the touch panel 100.
  • the connecting member is preferably an elastic member.
  • the actuator when the rear housing 101 and the touch panel 100 are connected via the connecting member, the actuator is fixed to the touch panel 100, and the actuator and the touch panel 100 are not displaced relatively.
  • the actuator may be configured to give acceleration to the touch panel 100. In this case, it is not denied that inertial force is generated when the mass is vibrated inside the actuator. In this case, the vibration direction may be variable.
  • the connecting member may be included as a part of the configuration of the actuator.
  • a pair of piezoelectric actuator 20A1 and fixing member 30A1 and a pair of piezoelectric actuator 20A2 and fixing member 30A2 are installed between the support plate 102A and the side plate in the lateral direction of the back side housing 101, respectively. Yes. At this time, the piezoelectric actuators 20A1 and 20A2 are arranged on the support plate 102A side, and the fixing members 30A1 and 30A2 are arranged on the side plate side.
  • a pair of piezoelectric actuator 20B1 and fixing member 30B1, and a pair of piezoelectric actuator 20B2 and fixing member 30B2 are installed between the support plate 102B and the side plate in the short side direction of the back side housing 101, respectively. Yes. At this time, the piezoelectric actuators 20B1 and 20B2 are arranged on the support plate 102B side, and the fixing members 30B1 and 30B2 are arranged on the side plate side.
  • the group of the piezoelectric actuator 20A1 and the fixing member 30A1, the group of the piezoelectric actuator 20A2 and the fixing member 30A2, the group of the piezoelectric actuator 20B1 and the fixing member 30B1, and the group of the piezoelectric actuator 20B2 and the fixing member 30B2 are Arranged at the four corners of the body 101.
  • the upper surfaces are at the four corners on the back surface of the touch panel 100, respectively. It is glued.
  • the four piezoelectric actuators 20A1, 20A2, 20B1, and 20B2 described above are arranged at the four corners of the touch panel 100.
  • the piezoelectric actuators 20A1, 20A2, 20B1, and 20B2 are vibration generating means. Since the piezoelectric actuators 20A1, 20A2, 20B1, and 20B2 all have the same structure, in the following description, the piezoelectric actuator 20 will be referred to as a representative. Similarly, the fixing members 30A1, 30A2, 30B1, and 30B2 all have the same structure, and hence are referred to as the fixing member 30 in the following description.
  • FIG. 2 is a trihedral view of the piezoelectric actuator 20.
  • the piezoelectric actuator 20 includes a long and flat elastic plate 200.
  • the elastic plate 200 has, for example, a rectangular planar shape, a length (length in the longitudinal direction) of 15 mm, a width (length in a direction perpendicular to the longitudinal direction of the flat plate surface) of 3 mm, and a thickness of 0.
  • the dimensions are 4 mm.
  • the dimensions of the elastic body 200 are not limited to this, and may be set as appropriate according to the desired vibration characteristics, the maximum outer shape, and the like.
  • the elastic plate 200 may be formed of a material including a metal, an alloy, a resin, and a composite resin including a metal. In this embodiment, the elastic plate 200 is formed of 42Ni or stainless steel.
  • Piezoelectric elements are disposed on both main surfaces of the elastic plate 200.
  • the piezoelectric element includes a piezoelectric ceramic 201 that is a piezoelectric body and a drive electrode. In FIG. 2, the drive electrode is omitted.
  • the piezoelectric element is displaced in the d31 mode and expands and contracts in the longitudinal direction.
  • the piezoelectric ceramic 201 has, for example, a rectangular shape, a length (length in the longitudinal direction) of 11 mm, a width (length in a direction perpendicular to the longitudinal direction of the flat plate surface) of 3 mm, and a thickness of 0.2 mm. It is formed as a dimension.
  • the piezoelectric ceramic 201 is made of a lead zirconate titanate ceramic, but may be made of an alkali niobate ceramic such as potassium sodium niobate.
  • the piezoelectric actuator 20 is a bimorph type piezoelectric actuator that is driven in the d31 mode. Therefore, the piezoelectric actuator 20 is a piezoelectric actuator that is curved and driven in a direction orthogonal to the main surface (flat plate surface).
  • Through holes 202 and 203 penetrating between the main surfaces are formed in the vicinity of both ends in the longitudinal direction (length direction) of the elastic plate 200 in areas where the piezoelectric ceramics 201 are not disposed.
  • FIG. 3 is an enlarged view of the installation portion of the piezoelectric actuator 20B2.
  • the installation structure of the piezoelectric actuator 20B2 will be described on behalf of the piezoelectric actuators 20A1, 20A2, 20B1, and 20B2.
  • the piezoelectric actuator 20 ⁇ / b> B ⁇ b> 2 is arranged such that the short side direction (width direction) is the depth direction of the concave portion of the back side housing 101, in other words, the main surface is the longitudinal direction of the back side housing 101.
  • the main surface and the side surface of the support plate 102B are disposed so as to face each other.
  • the piezoelectric actuator 20B2 has one end in the longitudinal direction fixed to the support plate 102B by a screw 220A. Specifically, the piezoelectric actuator 20B2 is fixed to the support plate 102B by passing the screw 220A through the through hole 202 at one end of the elastic plate 200 and the screw 220A.
  • a washer 221A is disposed between the support plate 102B and the elastic plate 200 of the piezoelectric actuator 20B2.
  • the distance between the piezoelectric actuator 20B2 and the support plate 102B is controlled by the washer 221A.
  • the interval between the surface of the piezoelectric ceramic 201 on the support plate 102B side of the piezoelectric actuator 20B2 and the support plate 102B is set to about 0.2 mm.
  • the other end in the longitudinal direction of the piezoelectric actuator 20B2 is fixed to the fixing member 30B2 by a screw 220B.
  • the piezoelectric actuator 20B2 is fixed to the fixing member 30B2 by passing the screw 220B through the through hole 203 at the other end of the elastic plate 200 and the screw 220B.
  • the fixing member 30B2 is installed on the side opposite to the support plate 102B with respect to the piezoelectric actuator 20B2.
  • the fixing member 30B2 is fixed so that the longitudinal direction thereof coincides with the longitudinal direction of the piezoelectric actuator 20B2 and is installed in parallel to the piezoelectric actuator 20B2.
  • a washer 221B is disposed between the fixing member 30B2 and the elastic plate 200 of the piezoelectric actuator 20B2.
  • the distance between the piezoelectric actuator 20B2 and the fixing member 30B2 is controlled by the washer 221B.
  • the interval between the surface of the piezoelectric ceramic 201 on the fixing member 30B2 side of the piezoelectric actuator 20B2 and the fixing member 30B2 is set to about 0.2 mm.
  • the fixed end with the support plate 102B is separated from the end portion in the longitudinal direction of the back side casing 101, and the fixed end with the fixing member 30B2 is the longitudinal length in which the back side casing 101 is close. It is installed so as to be close to the end of the direction.
  • the other piezoelectric actuators 20A1, 20A2, and 20B1 are installed such that the fixed end with the support plate is separated from the adjacent longitudinal end of the back side housing 101 rather than the fixed end with the fixing member. Yes.
  • the installation configuration along the longitudinal direction of the back side casing 101 may be reversed, but the configuration is preferable.
  • the end of the piezoelectric actuator 20 on the fixing member 30 side that is not fixed to the back-side housing 101 is the back-side housing 101. Vibrates in the short direction. Thereby, the fixing member 30 vibrates along the short direction, and the touch panel 100 having the fixing member 30 fixed to the four corners as described above is vibrated in the direction along the main surface of the touch panel 100. be able to. That is, the elastic plate 200 is a connecting member.
  • a drive signal is applied to each of the piezoelectric actuators 20A1, 20A2, 20B1, and 20B2 of the tactile sense presentation device 10 from the following circuit configuration.
  • FIG. 4 is a block diagram showing the main configuration of the vibration control circuit of the tactile presentation device 10 according to the present embodiment.
  • the vibration control circuit of the tactile sense presentation device 10 includes a drive control unit CC1 and a drive signal generation unit CC2.
  • the drive signal generator CC2 is connected to the piezoelectric actuators 20A1, 20A2, 20B1, and 20B2.
  • the drive control unit CC1 is a control unit that detects an operation of the touch panel 100 and generates a vibration control signal for causing the touch panel 100 to vibrate with predetermined vibration in the surface.
  • the drive signal generator CC2 generates a drive signal to be given to the piezoelectric ceramics 201 of each piezoelectric actuator 20A1, 20A2, 20B1, 20B2 based on the vibration control signal.
  • the same first drive signal is given to the piezoelectric actuators 20A1 and 20A2.
  • the same second drive signal is given to the piezoelectric actuators 20B1 and 20B2.
  • the same drive signal may be given to all the piezoelectric actuators 20A1, 20A2, 20B1, and 20B2, or different drive signals may be given.
  • the piezoelectric actuators 20A1, 20A2, 20B1, and 20B2 may be controlled so as to vibrate by generating acceleration vibration or inertial force on the touch panel 100. You may control to generate a displacement between the body 101 and the touch panel 100 and to vibrate.
  • each of the piezoelectric actuators 20A1, 20A2, 20B1, and 20B2 the piezoelectric elements disposed on both main surfaces of the elastic plate 200 have a reverse phase and the circumference of the driving force at the center of rotation due to the couple.
  • a drive signal whose direction components are opposite to each other is provided.
  • each piezoelectric actuator 20A1, 20A2, 20B1, and 20B2 vibrates along the short direction of the touch panel 100 according to the first and second drive signals. This vibration is transmitted to the touch panel 100 via the fixing member 30, and the touch panel 100 vibrates along a predetermined direction in the surface.
  • FIG. 5 is a diagram illustrating a first behavior of the haptic presentation device 10 according to the present embodiment.
  • 100BE represents a steady state (no drive signal applied state)
  • 100AF 1 and 100AR 1 represent a state during vibration (drive signal applied state).
  • Thick arrows 911H, 911W, 912H, and 912W are force vectors (driving force direction components) of the driving force of the piezoelectric actuator 20, and indicate the magnitude and direction of the driving force.
  • the first drive signal applied to the piezoelectric actuators 20A1 and 20A2 and the second drive signal applied to the piezoelectric actuators 20B1 and 20B2 are in opposite phases and are second with respect to the amplitude of the first drive signal. This shows a case where the amplitude of the drive signal is large.
  • the vibration directions of the piezoelectric actuators 20A1 and 20A2 and the piezoelectric actuators 20B1 and 20B2 are reversed along the short side direction of the rear housing 101. Further, the vibrations of the piezoelectric actuators 20A1 and 20A2 are smaller than the vibrations of the piezoelectric actuators 20B1 and 20B2.
  • the center of rotation 900A of the touch panel 100 is set at a predetermined position on the side of the piezoelectric actuators 20A1 and 20A2 in the plane of the touch panel 100 in plan view. Accordingly, at the position where the rotation center 900A of the touch panel 100 is located, the piezoelectric actuators 20A1 and 20A2 side of the touch panel 100 vibrate with a relatively small amplitude, and the distance of the small radius R1 is separated from the rotation center 900A.
  • the piezoelectric actuators 20B1 and 20B2 side vibrate with a relatively large amplitude of the arc shapes 901A and 901AR. That is, the touch panel 100, the state 100BE in a steady state shown in FIG.
  • the operator touches the vicinity of both ends in the longitudinal direction of the touch panel 100, the operator vibrates large vibrations at the piezoelectric actuators 20B1 and 20B2 side of the touch panel 100 and small vibrations at the piezoelectric actuators 20A1 and 20A2 side parts.
  • a tactile sensation that varies depending on the position in the surface of the touch panel 100 can be given to the operator.
  • FIG. 6 is a diagram illustrating a second behavior of the haptic presentation device 10 according to the present embodiment.
  • 100BE represents a steady state (drive signal non-application state)
  • 100AF 2 and 100AR 2 represent vibration states (drive signal application state).
  • Thick arrows 913H, 913W, 914H, and 914W are force vectors (driving force direction components) of the driving force of the piezoelectric actuator, and indicate the magnitude and direction of the driving force.
  • the first drive signal given to the piezoelectric actuators 20A1 and 20A2 and the second drive signal given to the piezoelectric actuators 20B1 and 20B2 have the same phase, and the circumferential direction of the driving force at the center of rotation due to the couple is shown.
  • the case is shown in which the components are in the same rotational direction and the amplitude of the second drive signal is smaller than the amplitude of the first drive signal.
  • the piezoelectric actuators 20A1 and 20A2 and the piezoelectric actuators 20B1 and 20B2 have the same vibration direction along the short side direction of the rear housing 101. Further, the vibrations of the piezoelectric actuators 20A1 and 20A2 are larger than the vibrations of the piezoelectric actuators 20B1 and 20B2.
  • the center of rotation 900B of the touch panel 100 is set at a predetermined position on the side of the piezoelectric actuators 20B1 and 20B2 outside the surface of the touch panel 100 in plan view.
  • the piezoelectric actuators 20B1 and 20B2 side of the touch panel 100 vibrate with relatively small amplitudes of the arcuate shapes 902B ′ and 902BR ′ at a position where the distance of the small radius R2 ′ is away from the rotation center 900B out of the surface of the touch panel 100.
  • the piezoelectric actuators 20A1 and 20A2 side of the touch panel 100 vibrate with a relatively large amplitude of the arcuate shapes 902B and 902BR at a position away from the out-of-plane rotation center 900B by a relatively large radius R2. That is, the touch panel 100, an intermediate position state 100BE in a steady state shown in FIG. 6, a state 100AF 2 shown in FIG. 6 (A), to repeat alternately the state 100AR 2 shown in FIG. 6 (B), Vibrates in an arc shape.
  • FIG. 7 is a diagram for explaining a third behavior of the tactile presentation device 10 according to the present embodiment.
  • 100BE represents a steady state (drive signal non-application state)
  • 100AF 3 and 100AR 3 represent vibration states (drive signal application state).
  • Thick arrows 915H and 916H are driving force vectors (driving force direction components) of the piezoelectric actuator 20, and indicate the magnitude and direction of the driving force.
  • the first drive signal applied to the piezoelectric actuators 20A1 and 20A2 and the second drive signal applied to the piezoelectric actuators 20B1 and 20B2 have the same phase, and the first drive signal and the second drive signal are The case where the amplitude is made the same magnitude is shown.
  • the piezoelectric actuators 20A1 and 20A2 and the piezoelectric actuators 20B1 and 20B2 have a vibration direction and a vibration amplitude magnitude in the short direction of the rear side housing 101. Will be the same along.
  • the touch panel 100 vibrates in a linear shape 903C and 903CR along the short direction of the touch panel 100 in plan view. That is, the touch panel 100, an intermediate position state 100BE in a steady state shown in FIG. 7, a straight line so as to repeat alternately the state 100AF 3 shown in FIG. 7 (A), and a state 100AR 3 shown in FIG. 7 (B) Vibrates in a shape.
  • the operator touches the vicinity of both ends in the longitudinal direction of the touch panel 100, the operator is similar in the piezoelectric actuator 20A1, 20A2 side portion of the touch panel 100 and the piezoelectric actuator 20B1, 20B2 side portion. I feel vibration.
  • a uniform tactile sensation can be given to the operator on the surface of the touch panel 100 as in the prior art without changing the configuration of the embodiment.
  • the touch panel 100 with uniform vibration over the entire main surface of the touch panel 100 and different vibrations depending on the position of the main surface with a simple configuration, which is complicated for the operator. Can provide a tactile sensation.
  • the vibration direction of the touch panel 100 is a direction parallel to the main surface of the touch panel 100
  • the touch panel 100 vibrates in the normal direction of the main surface of the touch panel 100 and relatively large noise is generated from the main surface of the touch panel 100. Will not occur. Therefore, the noise generated by vibrating in the normal direction of the main surface of the touch panel 100 is not told to the operator.
  • vibration can be easily generated by generating a driving force using a thin and small actuator with a simple structure, and generating a restoring force between the base and vibration transmission means, and the vibration mechanism can be reduced in size and simplified.
  • the tactile sense presentation device 10 can be realized with a small and simple configuration.
  • the touch panel 100 can be vibrated in a more versatile and complex manner by controlling the waveforms, phases, and amplitudes of the first drive signal and the second drive signal. Can be made. This makes it possible to give the operator a more diverse and complex tactile sensation.
  • FIG. 8 is a plan view showing a configuration of a tactile presentation device 10A in which the vibration transmitting means is the touch panel 100 in the vibration generating device according to the present embodiment.
  • the tactile sense presentation device 10A includes piezoelectric actuators 21A1, 21A2, 21B1, and 21B2. Since the piezoelectric actuators 21A1, 21A2, 21B1, and 21B2 all have the same structure, they will be referred to as piezoelectric actuators 21 in the following description.
  • FIG. 9 is an enlarged view of the installation portion of the piezoelectric actuator 21B2.
  • one end of the piezoelectric actuator 20 in the longitudinal direction is fixed to the back side housing 101 via the support plate 102A or the support plate 102B, and the other end is fixed to the fixing member 30.
  • the tactile sense presentation device 10A of the present embodiment shows an example of the both-end support mechanism.
  • casing 101 is the same, description is abbreviate
  • piezoelectric actuators 21A1 and 21A2 are installed near the one end in the longitudinal direction of the back side housing 101.
  • the piezoelectric actuators 21 ⁇ / b> A ⁇ b> 1 and 21 ⁇ / b> A ⁇ b> 2 are installed on two side plates facing each other along the longitudinal direction of the back side housing 101.
  • piezoelectric actuators 21B1 and 21B2 are installed near the other end in the longitudinal direction of the rear case 101.
  • the piezoelectric actuators 21 ⁇ / b> B ⁇ b> 1 and 21 ⁇ / b> B ⁇ b> 2 are installed on two side plates facing each other along the longitudinal direction of the back side housing 101.
  • the piezoelectric actuators 21 ⁇ / b> A ⁇ b> 1 and 21 ⁇ / b> B ⁇ b> 1 are respectively installed at both ends in the longitudinal direction of the first side plate (the side plate described on the upper side of the drawing in FIG. 8) along the longitudinal direction of the back side housing 101. ing. Similarly, the piezoelectric actuators 21A2 and 21B2 are respectively installed at both ends in the longitudinal direction of the second side plate (the side plate described on the lower side of the drawing in FIG. 8) along the longitudinal direction of the rear housing 101. Has been.
  • the piezoelectric actuators 21A1, 21A2, 21B1, and 21B2 are installed as specifically shown in FIG. Since the piezoelectric actuators 21A1, 21A2, 21B1, and 21B2 have the same configuration and installation configuration, the piezoelectric actuator 21B2 will be described as a representative of the piezoelectric actuators 21A1, 21A2, 21B1, and 21B2 in FIG.
  • the piezoelectric actuator 21 ⁇ / b> B ⁇ b> 2 includes a long and flat elastic plate 210.
  • the elastic plate 210 may be formed of a material including a metal, an alloy, a resin, and a composite resin including a metal.
  • the elastic plate 210 is formed of 42Ni or stainless steel.
  • the elastic plate 210 has, for example, a rectangular planar shape, a length (length in the longitudinal direction) of 35 mm, a width (length in a direction perpendicular to the longitudinal direction of the flat plate surface) of 3 mm, and a thickness of 0. The dimensions are 4 mm.
  • Piezoelectric elements are disposed on both main surfaces of the elastic plate 200.
  • the piezoelectric element includes a piezoelectric ceramic 211 that is a piezoelectric body and a drive electrode. In FIG. 9, the drive electrode is omitted.
  • the piezoelectric element is displaced in the d31 mode and expands and contracts in the longitudinal direction.
  • the piezoelectric ceramic 211 has, for example, a rectangular shape, a length (length in the longitudinal direction) of 30 mm, a width (length in a direction perpendicular to the longitudinal direction of the flat plate surface) of 3 mm, and a thickness of 0.2 mm. It is formed as a dimension.
  • the piezoelectric ceramic 211 is made of a lead zirconate titanate ceramic, but may be made of an alkali niobate ceramic such as potassium sodium niobate.
  • the piezoelectric actuator 21B2 is a bimorph piezoelectric actuator that is driven in the d31 mode. Therefore, the piezoelectric actuator 21B2 is a piezoelectric actuator that is curved and driven in a direction orthogonal to the main surface (flat plate surface).
  • the piezoelectric actuator 21 ⁇ / b> B ⁇ b> 2 is arranged such that the short side direction (width direction) is the depth direction of the concave portion of the back side housing 101, in other words, the main surface is the longitudinal direction of the back side housing 101.
  • the main surface and the second side plate are installed so as to face each other.
  • the piezoelectric actuator 21B2 is configured such that the second side plate of the back side housing 101 is formed by the elastic member 41 provided in a region where the piezoelectric ceramics 211 are not provided near both ends in the longitudinal direction (length direction) of the elastic plate 210. It is fixed to.
  • the thickness of the elastic member 41 By appropriately selecting the thickness of the elastic member 41, the distance between the surface of the piezoelectric ceramic 211 of the piezoelectric actuator 21B2 on the second side plate side and the surface of the second side plate is controlled.
  • the interval is set to about 0.2 mm.
  • the piezoelectric actuator 21B2 is fixed to the side surface of the touch panel 100 by an elastic member 40 provided at the center of the elastic plate 210 in the longitudinal direction (length direction).
  • an elastic member 40 provided at the center of the elastic plate 210 in the longitudinal direction (length direction).
  • the distance between the surface on the touch panel 100 side and the side surface of the touch panel 100 in the piezoelectric ceramic 211 of the piezoelectric actuator 21B2 is controlled.
  • the interval is set to about 0.6 mm.
  • piezoelectric actuators 21A1, 21A2, and 21B1 are also fixed in the same structure.
  • the central portion in the longitudinal direction of the piezoelectric actuator 21 that is not fixed to the back-side housing 101 is short of the back-side housing 101. Vibrates in the hand direction. The vibration is transmitted to the four corners of the touch panel 100, and the touch panel 100 can be vibrated in the direction along the main surface, as in the first embodiment.
  • actuators are installed at positions corresponding to the four corners of the touch panel 100.
  • the same driving force is provided. Can be generated.
  • an elastic body or the like may be installed at a location where the actuator is not installed.
  • the actuators are installed at the positions corresponding to the four corners of the touch panel 100 .
  • the actuators are arranged so that the directions of the driving force applied by the plurality of actuators are not aligned. If the is installed, the above-described effects can be obtained.
  • FIG. 10 is a plan view illustrating a schematic configuration and a behavior example of a haptic presentation device 10D according to the third embodiment of the present invention.
  • the tactile sense presentation device 10D includes piezoelectric actuators 22A and 22B. Similar to the first and second embodiments, the tactile sense presentation device 10D includes a touch panel 100 and a rear case 101.
  • 10A shows a case where the rotation center 900D is set within the surface of the touch panel 100
  • FIG. 10B shows a case where the rotation center 900D ′ is set outside the surface of the touch panel 100.
  • 100BE represents a steady state (drive signal non-application state)
  • 100AF 4 and 100AF 4 ′ represent vibration states (drive signal application state).
  • Thick arrows 917H, 917W, 918H, and 918W are force vectors (driving force direction components) of the driving force of the piezoelectric actuators 22A and 22B, and indicate the magnitude and direction of the driving force.
  • FIG. 11: is a top view which shows schematic structure and the example of behavior of the tactile sense presentation apparatus 10E which concerns on the 4th Embodiment of this invention.
  • the tactile sense presentation device 10E includes piezoelectric actuators 23A and 23B.
  • the tactile sense presentation device 10 ⁇ / b> E includes the touch panel 100 and the back side housing 101 as in the first and second embodiments.
  • 11A shows a case where the rotation center 900E is set within the surface of the touch panel 100, and FIG.
  • 11B shows a case where the rotation center 900E ′ is set outside the surface of the touch panel 100.
  • 100BE represents a steady state (drive signal non-application state)
  • 100AF 5 and 100AF 5 ′ represent vibration states (drive signal application state).
  • Thick arrows 919H, 919W, 920H, and 920W are force vectors (driving force direction components) of the driving force of the piezoelectric actuators 23A and 23B, and indicate the magnitude and direction of the driving force.
  • the piezoelectric actuators 22A and 22B are installed at both ends in the longitudinal direction of the back side casing 101 and the touch panel 100, respectively.
  • the piezoelectric actuators 22 ⁇ / b> A and 22 ⁇ / b> B are installed at approximately the center in the short side direction of the back-side housing 101 and the touch panel 100.
  • the piezoelectric actuators 22A and 22B are formed so as to vibrate along the short direction. If the amplitude and phase of the drive signal are controlled with respect to such piezoelectric actuators 22A and 22B, the rotation centers 900D and 900D ′ are located within the surface of the touch panel 100 as shown in FIGS. 10 (A) and 10 (B). Regardless of the out-of-plane position, the vibration of the arcs 901D, 901D ', 901D "is set at a predetermined position, and the radius R4 or the radius R4', R4" corresponding to the rotation center position is separated from the touch panel. 100. That is, the touch panel 100 vibrates in an arc shape so as to alternately repeat the state 100AF 4 and the state 100AF 4 ′ with the state 100BE in a steady state shown in FIG. 10 as an intermediate position.
  • piezoelectric actuators 23A and 23B are installed at both ends in the longitudinal direction of the back side casing 101 and the touch panel 100, respectively.
  • the piezoelectric actuators 23 ⁇ / b> A and 23 ⁇ / b> B are installed at approximately the center of the rear side housing 101 and the touch panel 100 in the short direction.
  • the piezoelectric actuators 23 ⁇ / b> A and 23 ⁇ / b> B are located along the longitudinal direction of the touch panel 100 in the steady state 100BE where the vibration is applied to the touch panel 100. It is arranged so as not to ride on a straight line.
  • the piezoelectric actuators 23A and 23B are formed so as to vibrate along the longitudinal direction. If the amplitude and phase of the drive signal are controlled with respect to such piezoelectric actuators 23A and 22B, the rotation centers 900E and 900E ′ are located within the surface of the touch panel 100 as shown in FIGS. Regardless of the out-of-plane position, the arcs 901E, 901F, or arcs 901E ′, 901E ′ are set at predetermined positions and are separated from each other by the radius R5, R6 or the radius R5 ′, R6 ′ according to the rotation center position. The touch panel 100 can be given vibration of 901F ′.
  • the touch panel 100 vibrates in an arc shape so that the state 100AF 5 and the state 100AF 5 ′ are alternately repeated with the state 100BE in a steady state shown in FIG. 11 as an intermediate position.
  • the center of rotation can be set along the short direction of the touch panel 100 and the housing 101. That is, the center of rotation can be set at positions outside both ends of the touch panel 100 and the housing 101 in the short direction.
  • the rectangular touch panel 100 is vibrated.
  • the installation position of each actuator is in any of the above relationships, the shape of the main surface of the touch panel 100 is rectangular. It does not have to be. For example, it may be a polygon, an ellipse including a circle, or a combination thereof.
  • the piezoelectric actuator is driven in the d31 mode, the main surface of the piezoelectric actuator is arranged so as to be orthogonal to the main surface of the touch panel 100, and the touch panel 100 is vibrated.
  • the piezoelectric actuator may be driven in the d33 mode, and the piezoelectric actuator may be arranged so that the main surface of the piezoelectric actuator is parallel to the main surface of the touch panel 100 so as to apply vibration parallel to the main surface of the touch panel 100.
  • the touch panel 100 has a light-transmitting property on at least a part of the main surface or is substantially transparent on the entire main surface. What has optical property is good.
  • a display panel having a main surface is arranged so as to face the main surface of the touch panel 100 on the back side housing 101 side.
  • the touch panel 100 and the display panel may be integrally formed. In this case, the state of the image or the moving image displayed on the display panel or the changing position can be obtained by a configuration in which an image on the display panel is displayed through the touch panel 100 and a different tactile sensation (force sensation) can be obtained on the touch panel 100.
  • the vibration generating means can be installed at a position that is not visible to the user.
  • the drive control unit CC1 can calculate a vibration control signal to be given to the vibration generating means so as to give a tactile sensation according to the display state of the display panel.
  • the touch panel 100 has been described as an example.
  • any flat plate member installed on the surface of the tactile sense presentation device can be used as the vibration transmission means of the present invention.
  • a protective glass plate may be used.
  • FIG. 12 is a diagram showing a concept for giving the set displacement to the touch panel 100.
  • the first driving point at which the first piezoelectric actuator applies vibration to the touch panel 100 is AP1
  • the second driving point at which the second piezoelectric actuator applies vibration to the touch panel 100 is AP2.
  • a first operation point that gives a tactile sensation is TP1
  • a second operation point that gives a tactile sensation is TP2.
  • the first operation point TP1 and the second operation point TP2 exist on a straight line connecting the first drive point AP1 and the second drive point AP2.
  • the first operating point TP1 is close to the first driving point AP1 and far from the second driving point AP2.
  • the distance between the first operating point TP1 and the first driving point AP1 is a.
  • the second operating point TP2 is close to the second driving point AP2 and far from the first driving point AP1.
  • the distance between the second operation point TP2 and the second drive point AP2 is b.
  • the distance between the first operation point TP1 and the second operation point TP2 is d.
  • the amplitude generated at the first driving point AP1 is set to M ⁇ (a + b) / d.
  • the amplitude generated at the second drive point AP2 is set to -M ⁇ b / d.
  • the first coefficient [M ⁇ (a + b) / d] and the second coefficient [ ⁇ M ⁇ b / d] are set for the drive signals applied to the first and second piezoelectric actuators. Multiply each. A drive signal multiplied by the first coefficient [M ⁇ (a + b) / d] is applied to the first piezoelectric actuator. A drive signal multiplied by the second coefficient [ ⁇ M ⁇ b / d] is applied to the second piezoelectric actuator.
  • the displacement at the operation point can be set to a desired displacement by controlling the drive signal applied to the piezoelectric actuator and appropriately setting the amplitudes of the first drive point AP1 and the second drive point AP2. Thereby, a tactile sense separated at two points on the touch panel 100 can be presented.
  • FIG. 12 shows the case where the first and second operation points TP1 and TP2 are between the first and second drive points AP1 and AP2. However, only one of the first and second operation points TP1 and TP2 is shown. Is also between the first and second drive points AP1 and AP2, or when the first and second drive points AP1 and AP2 are between the first and second operation points TP1 and TP2. Can be applied.
  • 10, 10A, 10D, 10E tactile sense presentation device
  • 101 rear side housing
  • 102A, 102B support plate
  • 30A1, 30A2, 30B1, 30B2 Fixed members
  • 40, 41 Elastic members
  • 200, 210 Elastic plates
  • 201, 211 Piezoelectric ceramics
  • 202, 203 Through holes
  • 220A, 220B Screws
  • 221A, 221B washers
  • CC1 drive control unit
  • CC2 drive signal generation unit

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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)

Abstract

La présente invention met en œuvre un dispositif de présentation de sensation tactile avec lequel une détection de force plus complexe est communiquée sans amener un opérateur à ressentir un inconfort. Des actionneurs piézoélectriques (20A1, 20A2, 20B1, 20B2) sont installés aux deux extrémités d'un boîtier de côté arrière (101) dans la direction longitudinale. Les actionneurs piézoélectriques (20A1, 20A2, 20B1, 20B2) comprennent une structure dans laquelle des céramiques piézoélectriques (201) sont disposées sur chaque face de plaques élastiques en forme de plaques plates (210), et sont positionnées de sorte que les faces des plaques plates, la plaque de face arrière du boîtier côté arrière (101) et la face principale d'un panneau tactile (100) soient orthogonales. Les actionneurs piézoélectriques (20A1, 20A2, 20B1, 20B2) sont ancrés au boîtier côté arrière (101) chacun à une extrémité de celui-ci dans la direction longitudinale, par l'intermédiaire de plaques de support (102A, 102B). Les autres extrémités des actionneurs piézoélectriques (20A1, 20A2, 20B1, 20B2) dans la direction longitudinale sont collées aux quatre coins du panneau tactile (100) par l'intermédiaire d'éléments d'ancrage (30A1, 30A2, 30B1, 30B2).
PCT/JP2011/079768 2010-12-27 2011-12-22 Dispositif d'émission d'oscillation et dispositif de présentation de sensation tactile WO2012090847A1 (fr)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014099140A (ja) * 2012-10-15 2014-05-29 Panasonic Corp 電子機器、情報提供システム、および電子機器の制御方法
JP2014153941A (ja) * 2013-02-08 2014-08-25 Denso Corp タッチパネル装置
EP3376349A4 (fr) * 2015-11-12 2019-06-12 Kyocera Corporation Dispositif de présentation de sensation tactile et dispositif électronique
WO2024070094A1 (fr) * 2022-09-26 2024-04-04 太陽誘電株式会社 Dispositif de génération de perception tactile

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000330688A (ja) * 1999-03-17 2000-11-30 Fuji Xerox Co Ltd 情報受感装置、情報伝達システム、情報受感装置の制御を行なうプログラムが記憶された記憶媒体
JP2007026344A (ja) * 2005-07-21 2007-02-01 Alps Electric Co Ltd 座標入力装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000330688A (ja) * 1999-03-17 2000-11-30 Fuji Xerox Co Ltd 情報受感装置、情報伝達システム、情報受感装置の制御を行なうプログラムが記憶された記憶媒体
JP2007026344A (ja) * 2005-07-21 2007-02-01 Alps Electric Co Ltd 座標入力装置

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014099140A (ja) * 2012-10-15 2014-05-29 Panasonic Corp 電子機器、情報提供システム、および電子機器の制御方法
JP2014153941A (ja) * 2013-02-08 2014-08-25 Denso Corp タッチパネル装置
EP3376349A4 (fr) * 2015-11-12 2019-06-12 Kyocera Corporation Dispositif de présentation de sensation tactile et dispositif électronique
US10514760B2 (en) 2015-11-12 2019-12-24 Kyocera Corporation Tactile sensation providing apparatus and electronic device
WO2024070094A1 (fr) * 2022-09-26 2024-04-04 太陽誘電株式会社 Dispositif de génération de perception tactile

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