WO2024116708A1 - 触感提示装置 - Google Patents

触感提示装置 Download PDF

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Publication number
WO2024116708A1
WO2024116708A1 PCT/JP2023/039465 JP2023039465W WO2024116708A1 WO 2024116708 A1 WO2024116708 A1 WO 2024116708A1 JP 2023039465 W JP2023039465 W JP 2023039465W WO 2024116708 A1 WO2024116708 A1 WO 2024116708A1
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WO
WIPO (PCT)
Prior art keywords
piezoelectric element
operated
vibration target
tactile sensation
operation unit
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/JP2023/039465
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English (en)
French (fr)
Japanese (ja)
Inventor
孝志 南
計旨 小池
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.)
Kyocera Corp
Original Assignee
Kyocera Corp
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 Kyocera Corp filed Critical Kyocera Corp
Priority to CN202380081523.0A priority Critical patent/CN120188129A/zh
Priority to EP23897364.8A priority patent/EP4629031A1/en
Priority to JP2024561272A priority patent/JP7834198B2/ja
Publication of WO2024116708A1 publication Critical patent/WO2024116708A1/ja
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
    • G06F3/016—Input arrangements with force or tactile feedback as computer generated output to the user

Definitions

  • This disclosure relates to technology that provides tactile sensations.
  • Patent document 1 describes a technology that uses vibration to provide a tactile sensation.
  • the tactile sensation presentation device includes a vibration target part on which a user's operation is performed, and a first vibration part that vibrates the vibration target part.
  • the vibration target part is vibrated by the first vibration part, and includes a vibration target member having at least one slit, and an elastic resin having at least a portion that blocks at least one of the slits.
  • FIG. 1 is a schematic diagram showing an example of a tactile sensation providing device.
  • FIG. 1 is a schematic diagram showing an example of a tactile sensation providing device.
  • FIG. 1 is a schematic diagram showing an example of a tactile sensation providing device.
  • FIG. 1 is a schematic diagram showing an example of a tactile sensation providing device.
  • FIG. 1 is a schematic diagram showing an example of a tactile sensation providing device.
  • FIG. 1 is a schematic diagram showing an example of a tactile sensation providing device.
  • FIG. 1 is a schematic diagram showing an example of a tactile sensation providing device.
  • FIG. 2 is a schematic diagram illustrating an example of a leaf spring member.
  • FIG. 1 is a schematic diagram showing an example of a tactile sensation providing device.
  • FIG. 1 is a schematic diagram showing an example of a tactile sensation providing device.
  • FIG. 1 is a schematic diagram showing an example of a tactile sensation providing device.
  • FIG. 1 is a schematic diagram showing an example of a tactile sensation providing device.
  • FIG. 1 is a schematic diagram showing an example of a tactile sensation providing device.
  • FIG. 1 is a schematic diagram showing an example of a tactile sensation providing device.
  • FIG. 1 is a schematic diagram showing an example of a tactile sensation providing device.
  • FIGS. 1 to 4 are schematic diagrams showing an example of a tactile sensation presentation device 1.
  • FIG. 2 shows an example of the tactile sensation presentation device 1 shown in FIG. 1 as viewed from the right side of FIG. 1.
  • FIG. 3 shows an example of a cross-sectional structure along the arrow A-A in FIG. 1.
  • FIG. 4 shows an example of a cross-sectional structure along the arrow B-B in FIG. 2.
  • the tactile sensation presentation device 1 is a device that presents a tactile sensation to a user in response to the user's operation on the tactile sensation presentation device 1.
  • the tactile sensation presentation device 1 will be explained with the upper and lower sides of the diagram showing the tactile sensation presentation device 1 being the upper and lower sides of the tactile sensation presentation device 1, respectively.
  • the tactile sensation presentation device 1 includes, for example, a vibration target part 2 on which a user operates, a vibration part 7 that vibrates the vibration target part 2, a control part 8 that controls the vibration part 7, and a housing 9 that supports the vibration target part 2.
  • the vibration part 7 and the control part 8 are contained within the housing 9.
  • the vibration part 7 vibrates the vibration target part 2 in response to the user's operation on the vibration target part 2, thereby presenting a tactile sensation to the user.
  • the vibration target part 2 includes, for example, a vibration target member 3 that is vibrated by a vibration part 7, an elastic resin 4, and an operation part 5 that is operated by a user.
  • the vibration target member 3 has at least one slit 35.
  • the elastic resin 4 has at least a portion that blocks at least one slit 35.
  • the portion that blocks at least one slit 35 may be, for example, a portion that fills at least one slit 35. In this case, it can be said that the elastic member 4 has at least a portion that fills at least one slit 35.
  • the vibration target member 3 has, for example, one slit 35.
  • the elastic resin 4 fills the slit 35 and covers the surface of the vibration target member 3.
  • the vibration target member 3 is, for example, plate-shaped.
  • the vibration target member 3 can also be called, for example, a panel or a panel member.
  • the outer shape of the vibration target member 3 is, for example, a rectangle with rounded corners. The shape of the vibration target member 3 is not limited to this.
  • the vibration target member 3 is made of, for example, resin.
  • the resin constituting the vibration target member 3 may be, for example, polycarbonate or ABS (acrylonitrile butadiene styrene).
  • the plate-shaped vibration target member 3 has, for example, a first surface 31 and a second surface 32 opposite the first surface 31.
  • the first surface 31 may be referred to as, for example, the first main surface 31, and the second surface 32 may be referred to as, for example, the second main surface 32.
  • the slit 35 is, for example, a long and thin hole that penetrates the vibration target member 3 in the thickness direction.
  • the slit 35 can also be called, for example, a slot.
  • the vibration target member 3 is provided with, for example, a U-shaped slit 35.
  • the slit 35 is provided so that both ends of the U shape it forms face downward.
  • the shape of the slit 35 does not have to be U-shaped, but may be linear, and multiple linear slits may be arranged to form a U-shape.
  • the vibration part 7 is provided, for example, on the second surface 32 of the vibration target member 3.
  • the vibration part 7 is provided, for example, on the center of the second surface 32.
  • the vibration part 7 is composed of, for example, a piezoelectric element.
  • the vibration part 7 is fixed to the second surface 32, for example, with a bonding material such as double-sided tape or adhesive.
  • the vibration part 7 composed of a piezoelectric element may be referred to as the piezoelectric element 7.
  • the piezoelectric element 7 may be, for example, a ceramic piezoelectric element or a polymer piezoelectric element. Furthermore, the piezoelectric element 7 may be, for example, a bimorph type or a monomorph type.
  • the piezoelectric element 7 has a shape that is long in one direction, for example. Specifically, the piezoelectric element 7 has a rectangular, elongated plate shape in a plan view. The piezoelectric element 7 is arranged on the second surface 32 of the vibration target member 3, for example, so that the longitudinal direction of the piezoelectric element 7 is parallel to the longitudinal direction of the vibration target member 3. The piezoelectric element 7 performs flexural vibration so as to curve along its longitudinal direction in response to a drive signal supplied from the control unit 8.
  • the plate-shaped piezoelectric element 7 performs flexural vibration by alternately repeating a first state in which it flexes in a mountain shape with one of its main surfaces facing outward, and a second state in which it flexes in a mountain shape with the other main surface facing outward.
  • the vibration target member 2 vibrates as the piezoelectric element 7 performs flexural vibration.
  • the elastic resin 4 is, for example, in the form of a sheet, and is provided on the first surface 31 of the vibration target member 3.
  • the elastic resin 4 covers, for example, the entire area of the first surface 31.
  • the outer shape of the elastic resin 4 is, for example, a rectangle with rounded corners, similar to the outer shape of the vibration target member 3.
  • the sheet-like elastic resin 4 has, for example, a first surface 41 and a second surface 42 opposite the first surface 41.
  • the first surface 41 can be referred to as, for example, the first main surface 41
  • the second surface 42 can be referred to as, for example, the second main surface 42.
  • the second surface 42 is in contact with the first surface 31 of the vibration target member 3.
  • the elastic resin 4 has a portion that blocks the slit 35.
  • the portion that blocks the slit 35 may be a portion of the elastic resin 4 that is filled in the slit 35.
  • the elastic resin 4 has a protruding portion 40 that protrudes from the second surface 42 side into the slit 35, and the protruding portion 40 constitutes the portion that is filled in the slit 35.
  • the protruding portion 40 extends along the longitudinal direction of the slit 35 and exists over the entire longitudinal area of the slit 35. In the longitudinal direction of the slit 35, the entire area of the slit 35 is filled with the protruding portion 40.
  • the slit 35 is partially filled with the protruding portion 40.
  • the protruding portion 40 that protrudes from the second surface 42 side of the elastic resin 4 into the slit 35 does not reach the second surface 32 of the vibration target member 3.
  • about half of the depth direction (in other words, the height direction) of the slit 35 is filled with the protruding portion 40.
  • the entire area of the slit 35 in the depth direction (in other words, the height direction) may be filled with the protrusion 40.
  • the elastic resin 4 is made of, for example, a resin that is softer than the vibration target member 3.
  • the elastic resin 4 is made of, for example, a resin that has a smaller elastic modulus (e.g., tensile elastic modulus) than the vibration target member 3.
  • the elastic resin 4 is made of, for example, a silicone resin or an elastomer such as polyurethane.
  • the housing 9 is, for example, a rectangular parallelepiped with one side open.
  • the housing 9 can also be said to be in the shape of a slightly elongated box.
  • the housing 9 may be made of, for example, resin, metal, or other materials.
  • the vibration target member 3 is fixed, for example, to the upper end surface of the peripheral wall of the housing 9.
  • the peripheral end of the second surface 32 of the vibration target member 3 is fixed, for example, with a waterproof bonding material 10 to the bottom surface of the step formed on the upper end surface of the peripheral wall of the housing 9.
  • the entire area of the peripheral end of the second surface 32 is fixed to the housing 9 with the waterproof bonding material 10. This makes it difficult for water or dust to enter the housing 9.
  • the waterproof bonding material 10 may be, for example, a waterproof tape or a waterproof adhesive. Because the vibration unit 7 and the control unit 8 are disposed in a space surrounded by the housing 9 and the vibration target member 3, the housing 9 and the vibration target member 3 can be considered to form a single housing. In this case, the housing 9 can be called the support housing, and the vibration target member 3 can be called the vibration housing. The housing 9 and the vibration target member 2 can also be considered to form a single housing.
  • the operation unit 5 operated by the user is provided, for example, on the first surface 41 of the elastic resin 4.
  • the operation unit 5 is configured, for example, by a protrusion that protrudes from the first surface 41 of the elastic resin 4 to the outside of the tactile sensation presentation device 1.
  • the operation unit 5 can also be called, for example, an operation button.
  • the operation unit 5 is formed integrally with the elastic resin 4, for example, using the same material as the elastic resin 4. In this case, it can also be seen that a part of the elastic resin 4 constitutes the operation unit 5.
  • the operation unit 5 is located on the center of the first surface 41 of the elastic resin 4 in the short-side direction (left-right direction in FIG. 1) of the first surface 41.
  • the operation unit 5 is also located above the center of the first surface 41 in the long-side direction (upper limit direction in FIG. 1) of the first surface 41.
  • the vibration unit 7 vibrates the vibration target portion 2 in response to the user's operation on the operation unit 5, thereby presenting a tactile sensation to the user.
  • the portion consisting of the elastic resin 4 and the operating portion 5, and the vibration target member 3 may be integrally formed, for example, by two-color molding.
  • the portion consisting of the elastic resin 4 and the operating portion 5, and the vibration target member 3 may be manufactured separately and attached to each other with a bonding material such as double-sided tape or adhesive. This bonding material may be a waterproof bonding material.
  • the operating portion 5 may also be made of a material different from the elastic resin 4.
  • the operating portion 5 may be made of the same material as the vibration target member 3, or may be made of another material such as metal.
  • the planar perspective view of the operation unit 5 while viewing the piezoelectric element 7 and the slit 35 from the second surface 32 side of the vibration target member 3 is called the first planar view.
  • the piezoelectric element 7 and the operation unit 5 are aligned along the longitudinal direction of the piezoelectric element 7.
  • the operation unit 5 is located between the slit 35 and the piezoelectric element 7 in the longitudinal direction of the piezoelectric element 7.
  • the operation unit 5 can also be said to be located between the center of the piezoelectric element 7 and the slit 35 in the longitudinal direction of the piezoelectric element 7.
  • the upper approximately half of the longitudinal direction of the piezoelectric element 7 is surrounded by the U-shaped slit 35.
  • the control unit 8 is composed of, for example, a circuit board on which a circuit is formed.
  • the control unit 8 can supply a drive voltage to the piezoelectric element 7 to cause the piezoelectric element 7 to flex and vibrate.
  • the control unit 8 can also recognize operations on the operation unit 5 based on the electromotive force generated in the piezoelectric element 7 in response to the operation of the operation unit 5.
  • the control unit 8 and the piezoelectric element 7 are electrically connected by a cable.
  • control unit 8 may be implemented by hardware circuitry that does not require software to implement the functions.
  • the control unit 8 may also include at least one processor to provide control and processing power to perform various functions, as described in more detail below.
  • the at least one processor may be implemented as a single integrated circuit (IC) or as multiple communicatively connected integrated circuits (ICs) and/or discrete circuits.
  • the at least one processor may be implemented according to various known techniques.
  • the processor may include one or more processors, controllers, microprocessors, microcontrollers, application specific integrated circuits (ASICs), digital signal processors, programmable logic devices, field programmable gate arrays, or any combination of these devices or configurations, or other known combinations of devices and configurations, to perform the functions described below.
  • ASICs application specific integrated circuits
  • digital signal processors programmable logic devices, field programmable gate arrays, or any combination of these devices or configurations, or other known combinations of devices and configurations, to perform the functions described below.
  • control unit 8 includes, for example, a microcomputer including a CPU (Central Processing Unit), a memory, an A/D converter, an amplifier, and the like.
  • the control unit 8 can also be considered, for example, as a control circuit.
  • the control unit 8 can also be considered, for example, as a computer device.
  • the control unit 8 for example, amplifies the electromotive force (also called output voltage) generated in the piezoelectric element 7 in response to the pressure of the operating unit 5, and sets the amplified electromotive force as a deflection level indicating the amount of deflection in the piezoelectric element 7.
  • the control unit 8 then A/D converts the deflection level, and recognizes the operation on the operating unit 5 based on the deflection level after A/D conversion.
  • the control unit 8 recognizes the operation on the operating unit 5, it generates a drive signal for driving the piezoelectric element 7, and supplies the generated drive signal to the piezoelectric element 7 to cause the piezoelectric element 7 to deflect and vibrate.
  • the vibration target unit 2 vibrates
  • the operating unit 5 vibrates.
  • a tactile sensation is given to a finger pressing the operating unit 5 through vibration.
  • control unit 8 When the control unit 8 recognizes an operation on the operation unit 5, it may notify a device external to the haptic presentation device 1 (also simply referred to as an external device) that the operation unit 5 has been operated, using at least one of wired communication and wireless communication.
  • a device external to the haptic presentation device 1 also simply referred to as an external device
  • the external device executes a predetermined process.
  • the external device may cause its own display unit to execute a predetermined display, or may control another mechanical device.
  • the external device may also issue a predetermined notification to a device other than the external device and the haptic presentation device 1, using at least one of wired communication and wireless communication.
  • the control unit 8 may cause the display unit to execute a predetermined display when it recognizes an operation on the operation unit 5. Furthermore, if the haptic presentation device 1 is equipped with a sound output unit such as a buzzer or speaker, the control unit 8 may cause the sound output unit to output a sound when it recognizes an operation on the operation unit 5.
  • the slits 35 are provided in the vibration target member 3, which makes it easier to vibrate the vibration target member 3. Even when the vibration target member 3 is fixed to the housing 9 with the waterproof bonding material 10, as in this example, the vibration target member 3 can be easily vibrated. Furthermore, since the elastic resin 4 has a portion filled within the slits 35, it is possible to make it difficult for water or dust to enter the housing 9 through the slits 35 while maintaining the ease with which the vibration target member 3 vibrates.
  • the vibration unit 7 is composed of a piezoelectric element as in this example, the operation on the vibration target unit 2 can be recognized based on the electromotive force of the piezoelectric element 7. Therefore, there is no need to provide a member for detecting the operation on the vibration target unit 2, such as a touch panel, separately from the vibration unit 7. Furthermore, even if the tactile sensation presentation device 1 is equipped with a touch panel, it is possible to stop the operation of the touch panel with respect to the detection of the operation on the operation unit 5. Therefore, it is possible to reduce the power consumption of the tactile sensation presentation device 1 equipped with a touch panel.
  • the vibration unit 7 may be composed of a material other than a piezoelectric element.
  • the vibration unit 7 may be a vibration motor or other material that vibrates the vibration target member 2.
  • the vibration target member 3 may be composed of, for example, a touch panel that detects a touch operation by the user.
  • the control unit 8 can recognize an operation on the operation unit 5 based on an output signal of the touch panel.
  • the control unit 8 may recognize an operation on the first surface 41 of the elastic resin 4 based on the output signal of the touch panel, and vibrate the vibration unit 7 in response to the recognition of the operation to give the user a tactile sensation.
  • the elastic resin 4 covers the entire area of the first surface 31 of the vibration target member 3, but it may cover only a part of the first surface 31. Furthermore, the elastic resin 4 does not have to cover the first surface 41 of the vibration target member 3. In other words, the elastic resin 4 does not have to cover the surface of the vibration target member 3, and it is sufficient that it has a portion that blocks the slit 35.
  • the elastic resin 4 may be composed of only the portion that fills the slit 35. It is sufficient that the elastic resin 4 has at least a portion that fills the slit 35.
  • the elastic resin 4 is made up only of the portion filled in the slit 35, there is a possibility that water or dust may enter the housing 9 from the interface between the inner wall of the slit 35 and the elastic resin 4.
  • the elastic resin 4 fills the slit 35 and covers the surface of the vibration target member 3, it is possible to make it even more difficult for water or dust to enter the housing 9 through the slit 35.
  • FIGS. 5 and 6 are schematic diagrams showing other examples of the slits 35.
  • Figures 5 and 6 correspond to the above-mentioned Figure 4.
  • one linear slit 35 is provided in the vibration target member 3.
  • the operating unit 5 is located between the slit 35 and the piezoelectric element 7 in the longitudinal direction of the piezoelectric element 7 when viewed in the first plane.
  • five linear slits 35 are provided in the vibration target member 3.
  • the example of FIG. 6 is the same as the example of FIG. 5, except that four additional slits 35 are provided.
  • the elastic resin 4 has five protrusions 40 that fill the five slits 35, respectively.
  • the piezoelectric element 7 and the five slits 35 are viewed in plan from the second surface 32 side, the piezoelectric element 7 is surrounded by the five slits 35.
  • FIG. 7 is a schematic diagram showing an example of a leaf spring member 100.
  • the tactile sensation presentation device 1 shown in Figures 7 and 8 may be referred to as tactile sensation presentation device 1A.
  • the leaf spring member 100 is capable of amplifying the vibration of the piezoelectric element 7 and transmitting it to the vibration target member 3.
  • the leaf spring member 100 can also be said to be a vibration amplifying member.
  • the leaf spring member 100 is made of, for example, metal.
  • the leaf spring member 100 is plate-shaped and includes, for example, a leaf spring portion 101 and two fixed portions 105.
  • the leaf spring portion 101 has an external shape that is approximately rectangular.
  • the leaf spring portion 101 has a fixed portion 102 at each of its two ends. Each fixed portion 102 has a through hole 102a. Each fixed portion 102 is fixed to the vibration target member 3 with a screw 120.
  • the two fixing parts 105 protrude outward in opposite directions from the longitudinal center of the leaf spring part 101.
  • the leaf spring part 101 and the two fixing parts 105 form a cross shape.
  • Each fixing part 105 has a through hole 105a.
  • Each fixing part 105 is fixed to the housing 9 with a screw 130.
  • the length of the leaf spring portion 101 is set to be greater than the length of the piezoelectric element 7.
  • the piezoelectric element 7 is fixed to the center of the leaf spring portion 101 with a bonding material such as epoxy resin so that the longitudinal direction of the piezoelectric element 7 is parallel to the longitudinal direction of the leaf spring portion 101.
  • the housing 9 has two bosses 900 protruding inward. Each boss 900 has a screw hole.
  • the two fixing parts 105 of the leaf spring member 100 are fixed to the two bosses 900 of the housing 9 with screws 130, respectively. After the screws 130 are passed through the through holes 105a of the fixing parts 105, the screws 130 are screwed into the screw holes of the bosses 900, thereby screwing the fixing parts 105 to the bosses 900.
  • the vibration target member 3 has two bosses 300 protruding from the second surface 32 side.
  • Each boss 300 has a screw hole.
  • the two fixing parts 102 at both ends of the leaf spring part 101 are fixed to the two bosses 300 with screws 120, respectively. After the screws 120 are passed through the through holes 102a of the fixing parts 102, the screws 120 are screwed into the screw holes of the bosses 300, thereby screwing the fixing parts 102 to the bosses 300.
  • the operation unit 5 faces the upper fixed portion 102 of the leaf spring portion 101 in the thickness direction of the vibration target portion 2 via the elastic resin 4 and the vibration target member 3.
  • the operation unit 5 is pressed, the upper fixed portion 102 of the leaf spring portion 101 is pressed and the leaf spring portion 101 bends with the fixed portion 105 as a fulcrum.
  • the piezoelectric element 7 bends and an electromotive force is generated in the piezoelectric element 7.
  • the control unit 8 confirms the operation of the operation unit 5 based on the electromotive force generated in the piezoelectric element 7, it causes the piezoelectric element 7 to flexibly vibrate.
  • the leaf spring portion 101 flexibly vibrates, and as a result, the vibration of the piezoelectric element 7 is amplified and transmitted to the vibration target portion 2. This makes it possible to efficiently present a tactile sensation to, for example, a finger touching the operation unit 5.
  • the tactile sensation presentation device 1 has one operation unit 5, but it may have multiple operation units 5.
  • the tactile sensation presentation device 1 may also have multiple vibration units 7.
  • Figures 10 to 13 are schematic diagrams showing an example of a tactile sensation presentation device 1 having multiple operation units 5 and multiple vibration units 7.
  • the tactile sensation presentation device 1 shown in Figures 10 to 13 may be referred to as tactile sensation presentation device 1B.
  • FIG. 11 shows an example of the tactile sensation presentation device 1B shown in FIG. 10 as viewed from the right side of FIG. 10.
  • FIG. 13 shows an example of the cross-sectional structure along arrows C-C in FIG. 10.
  • FIG. 13 shows an example of the cross-sectional structure along arrows D-D in FIG. 11.
  • the tactile sensation presentation device 1B includes, for example, five operation units 5 (also referred to as operation units 5a to 5d), two vibration units 7 (vibration units 7a and 7b), and two slits 35 (also referred to as slits 35a and 35b).
  • the vibration units 7a and 7b are, for example, piezoelectric elements 7a and 7b, respectively.
  • the control unit 8 can, for example, vibrate each of the piezoelectric elements 7a and 7b independently. Furthermore, the control unit 8 can recognize which of the operation units 5a to 5d has been operated, based on the electromotive forces at the piezoelectric elements 7a and 7b.
  • Operation units 5a and 5b are located above the center on the first surface 41 of the elastic resin 4. Operation units 5a and 5b are lined up along the short side of the first surface 41. Operation units 5c, 5d, and 5e are located below the center on the first surface 41. Operation units 5c and 5d are lined up along the short side of the first surface 41. Operation unit 5e is located below operation units 5c and 5d. Operation unit 5e is located at the center of the first surface 41 in the short side of the first surface 41. Operation units 5a and 5c are lined up along the long side of the first surface 41, and operation units 5b and 5d are lined up along the long side of the first surface 41.
  • Slit 35a is provided above the center of the vibration target member 3.
  • Slit 35b is provided below the center of the vibration target member 3.
  • Each of slits 35a and 35b is, for example, E-shaped.
  • Slit 35a is provided, for example, so that the open ends of the three parallel lines of the E shape it forms face downward.
  • Slit 35b is provided, for example, so that the open ends of the three parallel lines of the E shape it forms face upward.
  • the piezoelectric elements 7a and 7b are fixed to the second surface 32 of the vibration target member 3.
  • the piezoelectric elements 7a and 7b are aligned along the short side of the second surface 32.
  • the piezoelectric elements 7a and 7b are arranged so that their longitudinal direction is parallel to the longitudinal direction of the second surface 32.
  • the upper ends of the piezoelectric elements 7a and 7b are located in two spaces separated by the three parallel lines of the E shape formed by the upper slit 35a, and approximately the lower halves of the piezoelectric elements 7a and 7b are located in two spaces separated by the three parallel lines of the E shape formed by the lower slit 35b.
  • a planar see-through view of the operating units 5a to 5e while viewing the piezoelectric elements 7a, 7b, slits 35a and 35b from the second surface 32 side of the vibration target member 3 is referred to as a second planar view.
  • the operating units 5a and 5b are located above the piezoelectric elements 7a and 7b, most of the operating units 5c and 5d are located below the piezoelectric elements 7a and 7b, and the operating unit 5e is located below the piezoelectric elements 7a and 7b.
  • the piezoelectric element 7a and the operating unit 5a are aligned along the longitudinal direction of the piezoelectric element 7a, and the operating unit 5a is located between the piezoelectric element 7a and the slit 35a in the longitudinal direction of the piezoelectric element 7a.
  • the operating unit 5a can also be said to be located between the center of the piezoelectric element 7a and the slit 35a in the longitudinal direction of the piezoelectric element 7a.
  • the piezoelectric element 7b and the operating unit 5b are aligned along the longitudinal direction of the piezoelectric element 7b, and the operating unit 5b is located between the piezoelectric element 7b and the slit 35a in the longitudinal direction of the piezoelectric element 7b.
  • the operating unit 5b can also be said to be located between the center of the piezoelectric element 7b and the slit 35a in the longitudinal direction of the piezoelectric element 7b.
  • the operating unit 5c is located between the center of the piezoelectric element 7a and the slit 35b in the longitudinal direction of the piezoelectric element 7a, and slightly overlaps with the lower end of the piezoelectric element 7a.
  • the operating unit 5d is located between the center of the piezoelectric element 7b and the slit 35b in the longitudinal direction of the piezoelectric element 7b, and slightly overlaps with the lower end of the piezoelectric element 7b.
  • the operating unit 5e overlaps with the slit 35b. Specifically, in the second plan view, the operating unit 5e overlaps with the middle parallel line of the three parallel lines of the E shape formed by the slit 35b.
  • the tactile sensation presentation device 1B is configured so that the amount of deflection of the piezoelectric elements 7a and 7b changes depending on the operation unit 5 being operated. This allows the control unit 8 to easily recognize which of the multiple operation units 5 has been operated.
  • the amount of deflection of the piezoelectric elements 7a and 7b is determined, for example, by the shape of the slit 35 and the positional relationship between the slit 35, the piezoelectric element 7, and the operation unit 5.
  • the piezoelectric element 7a When either one of the operation units 5a and 5c is pressed, the piezoelectric element 7a is easily bent, and the piezoelectric element 7b is not easily bent. Therefore, when either one of the operation units 5a and 5c is pressed, the electromotive force (also called the first electromotive force) in the piezoelectric element 7a is greater than the electromotive force (also called the second electromotive force) in the piezoelectric element 7b. In addition, in the tactile sensation presentation device 1B, the piezoelectric element 7a is more easily bent when the operation unit 5c is pressed than when the operation unit 5a is pressed with the same strength.
  • the first electromotive force when the operation unit 5c is pressed with a certain strength is greater than the first electromotive force when the operation unit 5a is pressed with the same strength.
  • the control unit 8 recognizes that the operation unit 5a has been operated when the first electromotive force is somewhat greater than the second electromotive force.
  • the control unit 8 recognizes that the operation unit 5c has been operated when the first electromotive force is considerably greater than the second electromotive force.
  • the deflection level that the control unit 8 obtains by amplifying the first electromotive force is called the first deflection level.
  • the deflection level that the control unit 8 obtains by amplifying the second electromotive force is called the second deflection level.
  • the control unit 8 recognizes that the operating unit 5a has been operated when the value obtained by subtracting the second deflection level from the first deflection level is equal to or greater than the first threshold value and less than the second threshold value.
  • the first threshold value is greater than 0, and the second threshold value is greater than the first threshold value.
  • the control unit 8 recognizes that the operating unit 5c has been operated when the value obtained by subtracting the second deflection level from the first deflection level is equal to or greater than the second threshold value.
  • the piezoelectric element 7b When either the operation unit 5b or 5d is pressed, the piezoelectric element 7b is more likely to bend, and the piezoelectric element 7a is less likely to bend. Therefore, when either the operation unit 5b or 5d is pressed, the second electromotive force is greater than the first electromotive force. Furthermore, in the tactile sensation presentation device 1B, the piezoelectric element 7b is more likely to bend when the operation unit 5d is pressed than when the operation unit 5b is pressed with the same strength. Therefore, the second electromotive force when the operation unit 5d is pressed with a certain strength is greater than the second electromotive force when the operation unit 5b is pressed with the same strength.
  • the control unit 8 recognizes that the operating unit 5b has been operated when the second electromotive force is somewhat greater than the first electromotive force. On the other hand, the control unit 8 recognizes that the operating unit 5d has been operated when the second electromotive force is considerably greater than the first electromotive force. Specifically, the control unit 8 recognizes that the operating unit 5b has been operated when the value obtained by subtracting the first deflection level from the second deflection level is equal to or greater than the third threshold value and less than the fourth threshold value.
  • the third threshold value is greater than 0, and the fourth threshold value is greater than the third threshold value.
  • the third threshold value may be the same as the first threshold value or may be different.
  • the fourth threshold value may be the same as the second threshold value or may be different.
  • the control unit 8 recognizes that the operating unit 5d has been operated when the value obtained by subtracting the first deflection level from the second deflection level is equal to or greater than the fourth threshold value.
  • the control unit 8 recognizes that the operating unit 5e has been operated when the first electromotive force and the second electromotive force are each relatively large and the difference between the first electromotive force and the second electromotive force is very small. Specifically, the control unit 8 recognizes that the operating unit 5e has been operated when each of the first deflection level and the second deflection level is equal to or greater than the fifth threshold value and the absolute value of the difference between the first deflection level and the second deflection level is less than the sixth threshold value.
  • the fifth threshold value is greater than 0.
  • the sixth threshold value is smaller than the first threshold value and the third threshold value and is greater than or equal to 0.
  • control unit 8 When the control unit 8 recognizes that the operation unit 5a has been operated, it vibrates only the piezoelectric element 7a of the piezoelectric elements 7a and 7b, for example. This makes it possible to provide a tactile sensation to the finger touching the operation unit 5a, for example.
  • control unit 8 recognizes that the operation unit 5c has been operated, it vibrates only the piezoelectric element 7a of the piezoelectric elements 7a and 7b, for example. This makes it possible to provide a tactile sensation to the finger touching the operation unit 5c, for example.
  • control unit 8 When the control unit 8 recognizes that the operation unit 5a has been operated, it may vibrate only the piezoelectric element 7b of the piezoelectric elements 7a and 7b, or it may vibrate both the piezoelectric elements 7a and 7b. The same applies when the operation unit 5c is operated.
  • control unit 8 When the control unit 8 recognizes that the operation unit 5b has been operated, it vibrates only the piezoelectric element 7b of the piezoelectric elements 7a and 7b, for example. This makes it possible to provide a tactile sensation to the finger touching the operation unit 5b, for example.
  • control unit 8 When the control unit 8 recognizes that the operation unit 5d has been operated, it vibrates only the piezoelectric element 7b of the piezoelectric elements 7a and 7b, for example. This makes it possible to provide a tactile sensation to the finger touching the operation unit 5d, for example.
  • control unit 8 When the control unit 8 recognizes that the operation unit 5b has been operated, it may vibrate only the piezoelectric element 7a of the piezoelectric elements 7a and 7b, or it may vibrate both the piezoelectric elements 7a and 7b. The same applies when the operation unit 5d is operated.
  • control unit 8 When the control unit 8 recognizes that the operation unit 5e has been operated, it vibrates both piezoelectric elements 7a and 7b, for example. This makes it possible to provide a tactile sensation to the finger touching the operation unit 5e, for example. Note that when the control unit 8 recognizes that the operation unit 5e has been operated, it may vibrate only the piezoelectric element 7a of the piezoelectric elements 7a and 7b, or may vibrate only the piezoelectric element 7b of the piezoelectric elements 7a and 7b.
  • the tactile sensation presentation device 1B may not include some of the operation units 5a to 5d.
  • the tactile sensation presentation device 1B may not include the operation unit 5e.
  • the tactile sensation presentation device 1B may not include the operation units 5b, 5d, and 5e.
  • the piezoelectric element 7b is unnecessary, and the control unit 8 recognizes that the operation unit 5a has been operated when the electromotive force of the piezoelectric element 7a is relatively large, and recognizes that the operation unit 5c has been operated when the electromotive force of the piezoelectric element 7a is considerably large.
  • the control unit 8 recognizes that the operation unit 5a has been operated when the first deflection level is equal to or greater than the seventh threshold value and less than the eighth threshold value.
  • the seventh threshold value is greater than 0, and the eighth threshold value is less than the seventh threshold value.
  • the control unit 8 recognizes that the operation unit 5c has been operated when the first deflection level is equal to or greater than the eighth threshold value.
  • the tactile sensation presentation device 1B does not need to include the operation units 5a, 5c, and 5e.
  • the piezoelectric element 7a is unnecessary, and the control unit 8 recognizes that the operation unit 5b has been operated when the electromotive force in the piezoelectric element 7b is relatively large, and recognizes that the operation unit 5d has been operated when the electromotive force in the piezoelectric element 7b is considerably large.
  • the specific recognition operation of the control unit 8 is the same as when the tactile sensation presentation device 1B does not include the operation units 5b, 5d, and 5e.
  • the tactile sensation presentation device 1B does not need to include the operation units 5c, 5d, and 5e.
  • the control unit 8 recognizes that the operation unit 5a has been operated, for example, when the value obtained by subtracting the second deflection level from the first deflection level is equal to or greater than a first threshold value.
  • the control unit 8 recognizes that the operation unit 5b has been operated, for example, when the value obtained by subtracting the first deflection level from the second deflection level is equal to or greater than a third threshold value.
  • the tactile sensation presentation device 1B does not need to include the operation units 5a, 5b, and 5e.
  • the control unit 8 recognizes that the operation unit 5c has been operated, for example, when the value obtained by subtracting the second deflection level from the first deflection level is equal to or greater than the second threshold value.
  • the control unit 8 recognizes that the operation unit 5d has been operated, for example, when the value obtained by subtracting the first deflection level from the second deflection level is equal to or greater than the fourth threshold value.
  • the tactile sensation presentation device 1 may include a stopper 200 that stops the deformation of the vibration target member 3 when the operating unit 5 is operated.
  • Figure 14 is a schematic diagram showing an example of a state in which a stopper 200 is provided on the tactile sensation presentation device 1 shown in Figures 1 to 4.
  • Figure 14 is a diagram corresponding to Figure 3 described above.
  • the tactile sensation presentation device 1 shown in Figure 14 may be referred to as tactile sensation presentation device 1C.
  • the stopper 200 has, for example, a cylindrical or prismatic shape, and is erected on the inner surface of the housing 200. There is a gap between the upper end surface of the stopper 200 and the second surface 32 of the vibration target portion 2.
  • the stopper 200 is formed integrally with the housing 200, for example, from the same material as the housing 200. Note that the stopper 200 and the housing 200 may be manufactured separately and attached to each other with a bonding material such as double-sided tape or adhesive.
  • the stopper 200 may also be made of a material different from that of the housing 9.
  • the operating part 5 faces the upper end surface of the stopper 200 in the thickness direction of the vibration target part 2 via the elastic resin 4 and the vibration target member 3.
  • the second surface 32 of the vibration target member 3 hits the upper end surface of the stopper 200, and the deformation of the vibration target member 3 stops.
  • the stopper 200 can also be said to be a part that stops the displacement of the vibration target member 3 when the operating part 5 is pressed.
  • the user of the tactile sensation presentation device 1C presses the operation unit 5 until the vibration target member 3 hits the stopper 200.
  • the control unit 8 recognizes that an operation has been performed on the operation unit 5 based on the electromotive force in the piezoelectric element 7, and vibrates the piezoelectric element 7 to give the user a tactile sensation.
  • the tactile sensation providing device 1C is provided with the stopper 200 that stops the deformation of the vibration target member 3 when the operating unit 5 is operated, so that the vibration target member 3 is less likely to deform excessively.
  • a plurality of stoppers 200 may be provided corresponding to the plurality of operation units 5, respectively.
  • the deformation of the vibration target member 3 when the operation unit 5 is operated is stopped by the stopper 200 corresponding to the operation unit 5.
  • FIGs 15 and 16 are schematic diagrams showing an example of a tactile sensation presentation device 1 including two operation units 5 and two stoppers 200 corresponding to the two operation units 5, respectively.
  • the tactile sensation presentation device 1 also called tactile sensation presentation device 1D
  • Figures 15 and 16 correspond to Figures 3 and 4, respectively.
  • the tactile sensation providing device 1D includes an operation unit 5 (also referred to as an upper operation unit 5) located above the center on the first surface 31 of the elastic resin 4, and an operation unit 5 (also referred to as a lower operation unit 5) located below the center.
  • the upper operation unit 5 and the lower operation unit 5 are aligned along the longitudinal direction of the first surface 31.
  • the tactile sensation presentation device 1D includes a stopper 200 (also referred to as an upper stopper 200) that stops the deformation of the vibration target member 3 when the upper operation unit 5 is operated, and a stopper 200 (also referred to as a lower stopper 200) that stops the deformation of the vibration target member 3 when the lower operation unit 5 is operated.
  • the upper operation unit 5 faces the upper end surface of the upper stopper 200 via the elastic resin 4 and the vibration target member 3 in the thickness direction of the vibration target member 2.
  • the second surface 32 of the vibration target member 3 hits the upper end surface of the upper stopper 200, and the deformation of the vibration target member 3 stops.
  • the lower operation unit 5 faces the upper end surface of the lower stopper 200 via the elastic resin 4 and the vibration target member 3 in the thickness direction of the vibration target member 2.
  • the second surface 32 of the vibration target member 3 hits the upper end surface of the lower stopper 200, and the deformation of the vibration target member 3 stops.
  • the height position of the upper stopper 200 is, for example, higher than the height position of the lower stopper 200.
  • the height position of the stopper 200 can also be said to be the position of the upper end (in other words, the upper end surface) of the stopper 200.
  • the distance between the upper stopper 200 and the vibration target member 3 when the vibration target part 2 is not operated is smaller than the distance between the lower stopper 200 and the vibration target member 3 when the vibration target part 2 is not operated.
  • the length of the gap between the upper stopper 200 and the vibration target member 3 when the vibration target part 2 is not operated is smaller than the length of the gap between the lower stopper 200 and the vibration target member 3 when the vibration target part 2 is not operated.
  • the amount of pressing of the upper operation part 5 until the vibration target member 3 hits the upper stopper 200 is smaller than the amount of pressing of the lower operation part 5 until the vibration target member 3 hits the lower stopper 200.
  • the amount that the upper operating part 5 is pressed and the amount that the lower operating part 5 is pressed affect the amount of deflection of the piezoelectric element 7.
  • the tactile sensation presentation device 1D has a slit 35 (also called an upper slit 35) located above the center on the second surface 32 of the vibration target member 3, and a slit 35 (also called a lower slit 35) located below the center.
  • a slit 35 also called an upper slit 35
  • a slit 35 also called a lower slit 35 located below the center.
  • Each of the upper slit 35 and the lower slit 35 is, for example, U-shaped.
  • the upper slit 35 and the lower slit 35 have the same shape and are arranged symmetrically in the vertical direction with respect to the center of the second surface 32.
  • the height position of the upper stopper 200 and the height position of the lower stopper 200 are different from each other, so that the amount of deflection of the piezoelectric element 7 when the upper operation unit 5 is operated and the amount of deflection of the piezoelectric element 7 when the lower operation unit 5 is operated are different from each other.
  • the height position of the upper stopper 200 is higher than the height position of the lower stopper 200, so that the amount of deflection of the piezoelectric element 7 when the upper operation unit 5 is operated (i.e., the amount of deflection of the piezoelectric element 7 when the upper operation unit 5 is operated and the vibration target member 3 hits the upper stopper 200) is smaller than the amount of deflection of the piezoelectric element 7 when the lower operation unit 5 is operated (i.e., the amount of deflection of the piezoelectric element 7 when the lower operation unit 5 is operated and the vibration target member 3 hits the lower stopper 200).
  • the shape and position of each slit 35 are set so that the amount of deflection of the piezoelectric element 7 when the upper operating unit 5 is operated and the amount of deflection of the piezoelectric element 7 when the lower operating unit 5 is operated are the same.
  • the amount of deflection of the piezoelectric element 7 when the upper operation unit 5 is operated differs from the amount of deflection of the piezoelectric element 7 when the lower operation unit 5 is operated, so the control unit 8 can confirm which of the upper and lower operation units 5 has been operated, based on the electromotive force in the piezoelectric element 7. For example, the control unit 8 recognizes that the upper operation unit 5 has been operated when the level of deflection based on the electromotive force in the piezoelectric element 7 is equal to or greater than a seventh threshold and less than an eighth threshold. On the other hand, the control unit 8 recognizes that the lower operation unit 5 has been operated when the level of deflection is equal to or greater than the eighth threshold.
  • the height positions of at least some of the plurality of stoppers 200 may be made different from each other.
  • the height position of the stopper 200 corresponding to the operation unit 5c may be set smaller than the height position of the stopper 200 corresponding to the operation unit 5a.
  • the amount of deflection of the piezoelectric element 7a when the operation unit 5c is operated is larger than the amount of deflection of the piezoelectric element 7a when the operation unit 5a is operated, so that the control unit 8 can more easily confirm which of the operation units 5a and 5c has been operated.
  • the height position of the stopper 200 corresponding to the operation unit 5d may be set smaller than the height position of the stopper 200 corresponding to the operation unit 5b.
  • the amount of deflection of the piezoelectric element 7b when the operating unit 5d is operated is greater than the amount of deflection of the piezoelectric element 7b when the operating unit 5b is operated, making it easier for the control unit 8 to confirm which operating unit 5, 5b or 5d, has been operated.
  • the tactile sensation providing device has been described in detail, but the above description is illustrative in all respects, and this disclosure is not limited thereto. Furthermore, the various examples described above can be combined and applied as long as they are not mutually inconsistent. It is understood that countless examples not illustrated can be envisioned without departing from the scope of this disclosure.
  • This disclosure includes the following:
  • the tactile sensation presentation device includes a vibration target part on which a user's operation is performed, and a first vibration part that vibrates the vibration target part, and the vibration target part is vibrated by the first vibration part and includes a vibration target member having at least one slit, and an elastic resin having at least a portion that blocks the at least one slit.
  • the elastic resin is filled into at least one of the slits and covers the surface of the vibration target member.
  • a control unit that recognizes an operation on the vibration target part based on the electromotive force of the first piezoelectric element, and vibrates the first piezoelectric element in response to the recognition of the operation on the vibration target part.
  • the vibration target unit has a first operation unit and a second operation unit that are operated by a user, and the amount of deflection of the first piezoelectric element when the first operation unit is operated differs from the amount of deflection of the first piezoelectric element when the second operation unit is operated, and the control unit recognizes whether the first operation unit or the second operation unit has been operated based on the electromotive force in the first piezoelectric element.
  • a first stopper is provided to stop the deformation of the vibration target member when the first operating unit is operated
  • a second stopper is provided to stop the deformation of the vibration target member when the second operating unit is operated, and the distance between the first stopper and the vibration target member when the vibration target member is not operated is different from the distance between the second stopper and the vibration target member when the vibration target member is not operated.
  • a second piezoelectric element is provided to vibrate the vibration target member, the vibration target member has a third operation unit and a fourth operation unit operated by a user, the amount of deflection of the first piezoelectric element when the third operation unit is operated is greater than the amount of deflection of the second piezoelectric element when the third operation unit is operated, the amount of deflection of the second piezoelectric element when the fourth operation unit is operated is greater than the amount of deflection of the first piezoelectric element when the fourth operation unit is operated, and the control unit recognizes whether the third operation unit or the fourth operation unit has been operated based on the electromotive forces at the first piezoelectric element and the second piezoelectric element.

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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)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
PCT/JP2023/039465 2022-11-30 2023-11-01 触感提示装置 Ceased WO2024116708A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN202380081523.0A CN120188129A (zh) 2022-11-30 2023-11-01 触感提示装置
EP23897364.8A EP4629031A1 (en) 2022-11-30 2023-11-01 Tactile sensation presentation device
JP2024561272A JP7834198B2 (ja) 2022-11-30 2023-11-01 触感提示装置

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JP2022-191577 2022-11-30

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WO (1) WO2024116708A1 (cg-RX-API-DMAC7.html)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001016692A (ja) * 1998-11-05 2001-01-19 Matsushita Electric Ind Co Ltd 圧電スピーカ、その製造方法およびスピーカシステム
WO2002087063A1 (en) * 2001-04-19 2002-10-31 Fujitsu Limited Piezoelectric actuator and information storage device
JP2005352927A (ja) * 2004-06-14 2005-12-22 Sony Corp 入力装置および電子機器
JP2011048671A (ja) * 2009-08-27 2011-03-10 Kyocera Corp 入力装置および入力装置の制御方法
JP2011053745A (ja) 2009-08-31 2011-03-17 Nissha Printing Co Ltd 触感フィードバック型タッチパネルの実装構造

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001016692A (ja) * 1998-11-05 2001-01-19 Matsushita Electric Ind Co Ltd 圧電スピーカ、その製造方法およびスピーカシステム
WO2002087063A1 (en) * 2001-04-19 2002-10-31 Fujitsu Limited Piezoelectric actuator and information storage device
JP2005352927A (ja) * 2004-06-14 2005-12-22 Sony Corp 入力装置および電子機器
JP2011048671A (ja) * 2009-08-27 2011-03-10 Kyocera Corp 入力装置および入力装置の制御方法
JP2011053745A (ja) 2009-08-31 2011-03-17 Nissha Printing Co Ltd 触感フィードバック型タッチパネルの実装構造

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4629031A1

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EP4629031A1 (en) 2025-10-08
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CN120188129A (zh) 2025-06-20

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