WO2025003403A1 - Haptikbauteil mit piezoelektrischem aktuator und verstärkerelementen - Google Patents
Haptikbauteil mit piezoelektrischem aktuator und verstärkerelementen Download PDFInfo
- Publication number
- WO2025003403A1 WO2025003403A1 PCT/EP2024/068251 EP2024068251W WO2025003403A1 WO 2025003403 A1 WO2025003403 A1 WO 2025003403A1 EP 2024068251 W EP2024068251 W EP 2024068251W WO 2025003403 A1 WO2025003403 A1 WO 2025003403A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- stop
- stop structure
- haptic component
- reinforcing element
- component according
- 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
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
- B06B1/0644—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element
- B06B1/0648—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element of rectangular shape
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/02—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing linear motion, e.g. actuators; Linear positioners ; Linear motors
- H02N2/04—Constructional details
- H02N2/043—Mechanical transmission means, e.g. for stroke amplification
Definitions
- the present invention relates to a haptic component for generating a haptic signal.
- a haptic component for generating a haptic signal.
- Such a device has an actuator that generates a movement of a movable element.
- the movable element is designed, for example, as a touch-sensitive surface or tip of a pen-like device.
- the actuator is, for example, a piezoelectric actuator, in particular a piezoceramic actuator.
- the haptic component can be designed to generate haptic feedback when touched.
- the haptic component can be used, for example, in a touchscreen, trackpad, push button or stylus (pen-like device).
- the haptic component can be used in the automotive sector.
- a reinforcing element for stroke amplification is attached to a piezoelectric actuator.
- the reinforcing element is in the form of a metal sheet.
- a mechanical stop is formed by deep drawing a central area of the reinforcing element or by attaching an additional element to an inner side of the reinforcing element.
- a haptic component has a piezoelectric actuator and at least one reinforcing element with a lateral edge region, in which the reinforcing element is attached to the piezoelectric actuator, and with a central region that is movable perpendicular to a main surface of the actuator.
- a stop structure is formed for stopping against the actuator.
- the central region also has a non-stop structure that is not formed for stopping against the actuator.
- the stop structure has at least two stop regions, between which a non-stop region of the non-stop structure is arranged. In particular, this arrangement of stop regions and non-stop region can be seen in a cross-section of the haptic component perpendicular to a main surface of the actuator.
- Structuring a stop in this way can increase the stability of the reinforcing element, compared to a stop that is only designed in the form of a homogeneous circular surface, which may also have a hole inside for pressure equalization.
- the stop structure can achieve a more uniform force effect on the actuator when the stop structure rests on the actuator, so that the force effect is not concentrated on a small area.
- the reinforcing element By structuring the reinforcing element, the total area of the edge areas, i.e. those stop areas that border on non-stop areas, can be increased. This can prevent damage to the actuator and the reinforcing element even at higher forces.
- the actuator can be arranged between the reinforcing element and a further reinforcing element.
- the reinforcing elements can be designed in the same way, in particular they can have similar stop structures.
- the actuator is designed, for example, as a piezoceramic actuator.
- the stop structure can prevent the piezoceramic from breaking if excessive force is applied.
- the actuator has a square basic shape.
- the basic shape corresponds to a main surface of the actuator.
- the actuator can also have an elongated rectangular basic shape, for example.
- the reinforcing element has, for example, a circular basic shape. It is also possible for the reinforcing element to have a rectangular basic shape.
- the reinforcing element can be made from a sheet metal.
- the sheet metal has, for example, the shape of a basin or a truncated cone.
- the stop structure can be formed integrally with the non-stop structure.
- the Stop structure is an integral part of other areas of the reinforcing element, for example also the edge area.
- the stop structure can be designed as a formed part of the sheet metal.
- the stop structure is formed by deep drawing the sheet metal.
- the non-stop structure is not deep drawn.
- the stop structure may have several separate partial stops, wherein the partial stops are separated by the non-stop structure.
- the stop structure has one or more circular rings or circular segments.
- the non-stop structure can also have one or more circular rings or circular segments.
- the stop structure has several concentrically arranged circular rings.
- the circular rings can be arranged concentrically around a center point of the reinforcing element.
- One or more non-stop areas can also be in the form of circular rings or in the form of webs between the circular segments.
- the stop areas can also be in the form of webs.
- the webs extend from a center point towards the edge area.
- the circular rings or circular segments can be completely separate or connected by bridges.
- the stop structure has several circle segments and the non-stop structure is designed in the form of webs between the circle segments or the non-stop structure has several circle segments and the stop structure is designed in the form of webs between the circular segments.
- any geometry of the stop structures is also possible for the non-stop structures and vice versa.
- the stop structure and/or the non-stop structure has the shape of a cross.
- the stop structure can be arranged within a circular area so that an outer edge region of the stop structure runs in the form of a circular ring or interrupted circular ring.
- Stop areas of the stop structure can alternate with non-stop areas, viewed from a center point of the reinforcing element in the direction of the edge area.
- the stop structure and non-stop structure may be formed only in the central region of the reinforcing element.
- the structure may be formed such that it does not extend into the edge region. It is also possible that the stop and non-stop structure is formed only in an inner region of the central region.
- the structure extends only over a maximum of half the maximum extent of the central area.
- the central area is circular and the stop area is arranged within a circle with half the radius.
- stop areas and non-stop areas may alternate along a circular line around a centre point of the reinforcing element.
- a method for producing a haptic component is specified. In particular, it can be the haptic component described above.
- a sheet is provided for forming the reinforcing element. The sheet is plastically deformed and the stop structure is formed in the process.
- the sheet metal is deformed by deep drawing.
- the sheet metal is then attached to a piezoelectric actuator at its edge.
- the present invention comprises several aspects , in particular devices and methods .
- Figure 1A shows an embodiment of a haptic component in perspective view
- Figure 1B shows the embodiment of Figure 1A in cross section
- Figure 2A shows another embodiment of a haptic component in perspective view
- Figure 2B shows the embodiment of Figure 2A in cross section
- Figure 3 shows the embodiment of the haptic component of Figures 2A and 2B with electrical contact
- Figure 4 shows a further embodiment of a reinforcing element of a haptic component in a perspective view.
- Figures 1A and 1B show an embodiment of a haptic component 1 in a perspective view and in cross section.
- the haptic component 1 can be used, for example, in an input and/or output device, for example in a touchpad or a control button.
- the haptic component 1 has a piezoelectric actuator 2. This can be a piezoceramic element. In particular, it can be a ceramic multilayer component.
- the actuator 2 has electrical contact areas 10 for electrical contacting. The contact areas 10 are connected, for example, to electrode layers of different polarity.
- the polarity is indicated by a marking, for example the point shown here on one of the contact areas 10.
- the actuator 2 has a square basic shape in the present case. However, other basic shapes, e.g. an elongated rectangular basic shape, are also conceivable.
- the haptic component 1 has a reinforcing element 3.
- the piezoelectric actuator 2 is arranged between the reinforcing element 3 and a further reinforcing element 4.
- the reinforcing elements 3, 4 are each fastened to the actuator 2 in their lateral edge regions 5.
- the reinforcing elements 3, 4 are glued there to the actuator 2.
- the reinforcing element 3 can be connected to a touch surface for the input or output of haptic signals.
- the further reinforcing element 4 can be arranged on an abutment.
- the reinforcing element 3 has a basic shape in the form of a circular surface. However, other basic shapes, for example a square basic shape, are also possible.
- the basic shape of the reinforcing element 3 can in particular correspond to the basic shape of the actuator 2.
- the actuator 2 is designed to deform when an electrical voltage is applied, in particular in a plane of its main surface.
- the reinforcing elements 3, 4 deform due to their attachment to the actuator 2 in such a way that a central region 6 is moved perpendicular to the surface of the actuator 2.
- a vibration can be generated and thus a vibrotactile feedback can be generated.
- the haptic component 1 can alternatively or additionally be designed so that the actuator 2 generates an electrical signal when a force is applied to the reinforcing elements 3, 4. A haptic feedback can then be generated again.
- a compression force is applied from the outside to the central areas 6 the reinforcing elements 3, 4, an electrical signal is generated at the contact areas 10. In this way, a haptic influence from the outside can be detected and the haptic component 1 functions as a sensor.
- the reinforcing elements 3, 4 are designed in the form of sheets, in particular metallic sheets.
- the sheet material is titanium.
- the sheets are shaped in such a way that the central region 6 is raised from the surface of the actuator 2 in the resting state.
- the reinforcing elements 3, 4 have the geometry of a basin or a truncated cone.
- a stop structure 7 is intended to limit excessive deformation of the reinforcing element 3, 4 and to distribute the mechanical load over a sufficiently large surface area of the actuator 2.
- the stop structure 7 is described below with reference to the reinforcing element 3.
- the further reinforcing element 4 can be designed accordingly.
- the stop structure 7 is an integral part of the reinforcing element 3, in particular integrally formed with a non-stop structure 12 and the edge region 5. This enables a particularly simple manufacture of the stop structure 7.
- the Stop structure 7 by a plastic deformation of the
- Reinforcing element 3 is formed, such as deep drawing.
- the stop structure 7 has a structure in order to distribute the forces more evenly on the actuator 2.
- the stop structure 7 is not only designed in the form of a single circular depression, in which only a circular edge region is formed to an outer non-stop region 16. Rather, several non-stop regions 8a, 8b, 8c, 8d are formed between stop regions 7a, 7b, 7c, 7d.
- edge regions 14a, 14b, 14c, 14d are located at different distances from a center point 9 of the reinforcing element.
- the edge region 14a is part of the outer edge of the stop structure 7.
- the outer edge is circular.
- Non-stop areas 8b, 8c are formed directly adjacent to the hole 13.
- the hole 13 is not a non-stop area because it does not have any material.
- stop structure 7 In the stop structure 7 shown, several stop regions 7a, 7b, 7c, 7d alternate with non-stop regions 8a, 8b, 8c, 8d as seen from the center point 9 of the reinforcing element 3 in the direction of the edge region 5.
- the stop areas 7a-7d form several separate partial stops 11a, 11b in the form of concentric circular rings.
- the circular rings are separated from one another by a non-stop structure 12 having several concentric circular rings.
- the stop structure 7 is rotationally symmetrical about an axis through the center 9 perpendicular to a main surface of the actuator 2.
- such embodiments can be suitable for a force of greater than 300 N, for example of up to 400 N, without causing damage to the reinforcing elements 3, 4 or the actuator 2.
- the maximum compression force, which is evenly distributed over the surface of the actuator, can be limited to 20 N, for example.
- FIGS 2A and 2B show a further embodiment of a haptic component 1 in perspective view and in cross section.
- the haptic component 1 shown here differs differs from the haptic component 1 of Figures 1A and 1B in the geometry of the stop structure 7 .
- the stop structure 7 has several separate partial stops 11a, 11b, 11c, l ld in the form of a segment of a circle.
- a non-stop structure 12 having several webs is formed between the partial stops l la- l ld.
- the non-stop structure 12 is formed overall in the shape of a cross.
- edge regions 14a, 14b from stop regions 7a, 7b to non-stop regions 8a, 8b, 16 are arranged at different distances from the center point 9.
- the area of the edge regions 14a, 14b is larger than with a uniformly circular structure of a stop.
- the force can also be distributed more evenly across the actuator 2 here.
- stop areas 7a, 7b, 7c, 7d alternate with non-stop areas 8a, 8b, 8c, 8d along a circular line around the center point 9 of the reinforcement element 3.
- the cross-shaped non-stop structure 12 shown here results in particularly good stability of the reinforcing element 3 and particularly good distribution of the force.
- a force of 400 N does not cause any damage.
- the stop structure 7 shown here is not rotationally symmetrical.
- the stop structure 7 is axially symmetrical with respect to a plane perpendicular to a main surface of the actuator 2 .
- the stop structure 7 has four partial stops l la- l ld in the form of a segment of a circle. It is also possible to provide more or fewer partial stops l la- l ld in the form of a segment of a circle, for example three or five partial stops.
- the further reinforcing element 4 can be oriented like the reinforcing element 3 or can be rotated relative to the reinforcing element 3 about an axis perpendicular to a main surface of the actuator 2.
- the further reinforcing element 4 is rotated by 45°. This can further improve the stability of the reinforcing elements 3, 4 and the uniformity of the force application.
- the stop structure 7 When structuring the stop structure 7, it is advantageous if a sufficient area is available on a side facing away from the actuator 2 for fastening to the rear of a touch surface, such as a control button or a touch pad.
- the non-stop structure 12 between the partial stops l la- l ld also enables fastening or holding in the area of the center point 9 of the reinforcing element 3.
- the non-stop structure 12 can be attached to a movable element of the contact surface by means of adhesive or an adhesive tape.
- the annular non-stop structure 12 also forms a fastening or mounting option for system integration.
- the stop structure 7 and the non-stop structure 12 are only formed in the central region 6.
- the stop structure 7 and non-stop structure 12 are in particular only formed in an inner region of the central region 6.
- the stop structure 7 and non-stop structure 12 lie within a circle with a radius that is less than or equal to half the radius of the central region 6.
- Figure 3 shows the haptic component 1 from Figures 2A and 2B with an electrical contact 11.
- the electrical contact 15 establishes an electrical contact with the contact areas 10.
- the contact 15 is connected to the contact areas 10 by an electrically conductive adhesive.
- Figure 4 shows a further embodiment of a reinforcing element 3, 4 of a haptic component 1 in a perspective view.
- the haptic component 1 can be designed as in the further embodiments.
- the reinforcing element 3 has an integral stop structure 7 which is formed in a circular ring shape.
- the stop structure 7 surrounds a non-stop structure 12 which is also circular ring shaped.
- the non-stop structure 12 surrounds a hole 13 in the reinforcing element 3.
- the non-stop structure 12 can as in the other versions for attachment to a user interface.
- the stop structure 7 has several edge areas 14a, 14b, so that the force on the actuator 2 can be distributed more evenly than would be possible with only one edge area.
- the stop structure 7 is designed as an integral component of the reinforcing element 3.
- the stop structure 7 is introduced by deforming the reinforcing element 3. It is also possible to form the stop structure 7 by attaching a separate element, for example a plastic film or a foam. For example, it can be a Kapton film.
- the haptic component 1 may have a separate element in addition to an integrated stop structure 7 in order to further homogenize the force application.
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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)
- Mechanical Engineering (AREA)
- User Interface Of Digital Computer (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202480043796.0A CN121444041A (zh) | 2023-06-29 | 2024-06-28 | 带有压电致动器和增强元件的触觉构件 |
| DE112024002773.3T DE112024002773A5 (de) | 2023-06-29 | 2024-06-28 | Haptikbauteil |
| EP24737458.0A EP4735972A1 (de) | 2023-06-29 | 2024-06-28 | Haptikbauteil mit piezoelektrischem aktuator und verstärkerelementen |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102023117176.3A DE102023117176B3 (de) | 2023-06-29 | 2023-06-29 | Haptikbauteil |
| DE102023117176.3 | 2023-06-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2025003403A1 true WO2025003403A1 (de) | 2025-01-02 |
Family
ID=91758806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2024/068251 Ceased WO2025003403A1 (de) | 2023-06-29 | 2024-06-28 | Haptikbauteil mit piezoelektrischem aktuator und verstärkerelementen |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4735972A1 (de) |
| CN (1) | CN121444041A (de) |
| DE (2) | DE102023117176B3 (de) |
| WO (1) | WO2025003403A1 (de) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014096565A1 (fr) * | 2012-12-20 | 2014-06-26 | Dav | Actionneur piezo-electrique et procede de fabrication associe |
| WO2017060011A1 (de) | 2015-10-09 | 2017-04-13 | Epcos Ag | Bauelement zur erzeugung eines aktiven haptischen feedbacks |
| WO2018046201A1 (de) | 2016-09-07 | 2018-03-15 | Epcos Ag | Vorrichtung zur erzeugung einer haptischen rückmeldung |
| US20220297159A1 (en) * | 2020-07-14 | 2022-09-22 | Tdk Electronics Ag | Apparatus for generating a haptic signal |
| WO2022248244A1 (de) | 2021-05-28 | 2022-12-01 | Tdk Electronics Ag | Piezoelektrisches vielschichtenelement |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019120720A1 (de) | 2019-07-31 | 2021-02-04 | Tdk Electronics Ag | Mechanisches Verstärkungselement |
| DE102021130788B3 (de) | 2021-11-24 | 2023-02-23 | Tdk Electronics Ag | Haptik-Vorrichtung |
-
2023
- 2023-06-29 DE DE102023117176.3A patent/DE102023117176B3/de active Active
-
2024
- 2024-06-28 DE DE112024002773.3T patent/DE112024002773A5/de active Pending
- 2024-06-28 CN CN202480043796.0A patent/CN121444041A/zh active Pending
- 2024-06-28 EP EP24737458.0A patent/EP4735972A1/de active Pending
- 2024-06-28 WO PCT/EP2024/068251 patent/WO2025003403A1/de not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014096565A1 (fr) * | 2012-12-20 | 2014-06-26 | Dav | Actionneur piezo-electrique et procede de fabrication associe |
| WO2017060011A1 (de) | 2015-10-09 | 2017-04-13 | Epcos Ag | Bauelement zur erzeugung eines aktiven haptischen feedbacks |
| WO2018046201A1 (de) | 2016-09-07 | 2018-03-15 | Epcos Ag | Vorrichtung zur erzeugung einer haptischen rückmeldung |
| US20220297159A1 (en) * | 2020-07-14 | 2022-09-22 | Tdk Electronics Ag | Apparatus for generating a haptic signal |
| WO2022248244A1 (de) | 2021-05-28 | 2022-12-01 | Tdk Electronics Ag | Piezoelektrisches vielschichtenelement |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4735972A1 (de) | 2026-05-06 |
| DE102023117176B3 (de) | 2024-10-02 |
| CN121444041A (zh) | 2026-01-30 |
| DE112024002773A5 (de) | 2026-04-30 |
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