CN106843508B - Piezoelectric type tactile feedback module and terminal - Google Patents
Piezoelectric type tactile feedback module and terminal Download PDFInfo
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- CN106843508B CN106843508B CN201710189853.8A CN201710189853A CN106843508B CN 106843508 B CN106843508 B CN 106843508B CN 201710189853 A CN201710189853 A CN 201710189853A CN 106843508 B CN106843508 B CN 106843508B
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- piezoelectric
- piezoelectric element
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- element assembly
- middle frame
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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
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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
- G06F3/03—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
- G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
Abstract
The invention relates to the technical field of piezoelectric modules, in particular to a piezoelectric type tactile feedback module and a terminal, and aims to provide the piezoelectric type tactile feedback module and the terminal so as to solve the technical problem that the interaction effect of the touch technology in the prior art is poor. Comprising the following steps: the piezoelectric element assembly comprises a panel, a rear cover plate, a middle frame, a piezoelectric element assembly and a circuit module, wherein the middle frame is arranged between the panel and the rear cover plate; the front face of the panel is pressed and then triggers the piezoelectric element assembly so that the piezoelectric element assembly generates a triggering electric signal, and the triggering electric signal is transmitted to the circuit module and then generates an excitation signal for triggering the piezoelectric element assembly by the circuit module. The piezoelectric element assembly generates strong vibration after receiving the excitation signal and transmits the vibration to the panel, thereby realizing tactile feedback.
Description
Technical Field
The invention relates to the technical field of piezoelectric modules, in particular to a piezoelectric type tactile feedback module and a terminal.
Background
With the development of electronic technology, touch input has been popularized in various home appliances and industrial equipment, such as a capacitive touch pad on a refrigerator or a microwave oven.
Since these touch pads are non-actuated, i.e. there is no mechanical travel when clicking, the user cannot perceive from the finger whether a valid click is made on these buttons. In the related art, the user is interacted by generating a sound, such as a 'beep' sound, but in a noisy environment, the manner of interaction with the user by the sound can not be effectively distinguished by the user due to too little sound, so that the technical problem of poor user experience exists,
therefore, the touch technology in the prior art has the technical problem of poor interaction effect.
Disclosure of Invention
The invention aims to provide a piezoelectric type tactile feedback module and a terminal, which are used for solving the technical problem of poor interaction effect of touch technology in the prior art.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a piezoelectric haptic feedback module, comprising:
the piezoelectric element assembly comprises a panel, a rear cover plate, a middle frame, a piezoelectric element assembly and a circuit module, wherein the middle frame is positioned between the panel and the rear cover plate;
the front face of the panel is pressed to trigger the piezoelectric element assembly so that the piezoelectric element assembly generates a trigger electric signal, and the trigger electric signal is transmitted to the circuit module and then is used for generating an excitation signal for triggering the piezoelectric element assembly by the circuit module.
Still further, the method further comprises the steps of,
the piezoelectric element assembly includes a plurality of piezoelectric elements arranged in an array,
the piezoelectric element comprises a substrate abutted against the back surface of the panel and a piezoelectric ceramic piece positioned on one side of the substrate away from the panel.
Still further, the method further comprises the steps of,
the middle frame is provided with through holes which are in one-to-one correspondence with the piezoelectric elements and are used for avoiding the piezoelectric ceramic plates of the piezoelectric elements.
Still further, the method further comprises the steps of,
the middle frame is also provided with pin holes positioned at the corners of the through holes, and the piezoelectric element is connected with the middle frame through pin posts penetrating through the pin holes and connected with the substrate.
Still further, the method further comprises the steps of,
the number of the pin holes on each through hole is four, and the four pin holes are positioned at the corners of the through hole.
Still further, the method further comprises the steps of,
and the middle frame is also provided with a metal contact positioned at the edge of the through hole and leads with two ends respectively connected with the metal contact and the piezoelectric ceramic piece.
Still further, the method further comprises the steps of,
and one side of the rear cover plate, which is close to the panel, is provided with a first spring electrode needle connected with the pin column and a second spring electrode needle connected with the metal contact.
Still further, the method further comprises the steps of,
the circuit block comprises a power input port, a logic circuit, a signal output port and a driving circuit;
the power input port is used for supplying power to the circuit module;
the logic circuit is used for receiving a trigger electric signal generated when the piezoelectric element is deformed, outputting a control signal to the signal output port after judgment, and outputting a port judgment signal to the driving circuit;
the driving circuit is used for receiving the port judging signal output by the logic circuit and outputting an excitation signal to the piezoelectric element;
the signal output port is used for receiving and outputting the control signal generated by the logic circuit.
Still further, the method further comprises the steps of,
the substrate and the pin are made of metal, and the panel is made of plastic.
A terminal comprises the piezoelectric type tactile feedback module.
By combining the technical scheme, the invention has the beneficial effects that:
the invention provides a piezoelectric type touch feedback module which comprises a panel, a back cover plate, a middle frame, a piezoelectric element assembly and a circuit module, wherein the middle frame is positioned between the panel and the back cover plate;
the working principle of the piezoelectric type tactile feedback module provided by the invention is briefly described as follows:
the front side of the panel is pressed to trigger the piezoelectric element assembly so that the piezoelectric element assembly generates a trigger electric signal, the trigger electric signal is transmitted to the circuit module and then the circuit module generates an excitation signal for triggering the piezoelectric element assembly, and the piezoelectric element assembly generates strong vibration and transmits the vibration to the panel after receiving the excitation signal, so that tactile feedback is realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is an exploded view of a piezoelectric haptic feedback module according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram (front) of an assembled piezoelectric haptic feedback module according to an embodiment of the present invention;
FIG. 3 is a schematic diagram (back) of an assembled piezoelectric haptic feedback module according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a back structure of a middle frame of a piezoelectric haptic feedback module according to an embodiment of the present invention;
fig. 5 is a schematic partial structure diagram (front side) of a piezoelectric haptic feedback module according to an embodiment of the invention;
FIG. 6 is a schematic diagram of a partial structure (back) of a piezoelectric haptic feedback module according to an embodiment of the invention;
fig. 7 is a partial cross-sectional view of a piezoelectric haptic feedback module according to an embodiment of the invention.
Icon: 1-a panel; a 2-piezoelectric element assembly; 3-a middle frame; 4-pin; 5-a back cover plate; 6-a circuit module; 21-a substrate; 22-piezoelectric ceramic plates; 31-through holes; 32-pin holes; 33-metal contacts; 34-conducting wires; 61-a power input port; 62-a signal output port; 63-logic circuitry; a 64-drive circuit; 511-a first spring electrode needle; 512-second spring electrode needle.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The front surface referred to in the present invention means a side surface close to an operator. For example, the front of the panel refers to the side of the panel that is closer to the operator. For another example, the front side of the middle frame refers to the side of the middle frame that is adjacent to the panel. For another example, the front side of the back plate refers to the side of the back plate that is adjacent to the center frame.
The term "rear face" as used herein means a side facing away from the operator. For example, the back of the panel refers to the side of the panel facing away from the operator. For another example, the back side of the middle frame refers to the side of the middle frame facing away from the panel. For another example, the back side of the back plate refers to the side of the back plate facing away from the center frame.
Embodiment 1 and embodiment 2 are described in detail below with reference to the accompanying drawings:
FIG. 1 is an exploded view of a piezoelectric haptic feedback module according to an embodiment of the present invention; fig. 2 is a schematic structural diagram (front) of an assembled piezoelectric haptic feedback module according to an embodiment of the present invention; FIG. 3 is a schematic diagram (back) of an assembled piezoelectric haptic feedback module according to an embodiment of the present invention; fig. 4 is a schematic diagram of a back structure of a middle frame of a piezoelectric haptic feedback module according to an embodiment of the present invention; fig. 5 is a schematic partial structure diagram (front side) of a piezoelectric haptic feedback module according to an embodiment of the invention; FIG. 6 is a schematic diagram of a partial structure (back) of a piezoelectric haptic feedback module according to an embodiment of the invention; fig. 7 is a partial cross-sectional view of a piezoelectric haptic feedback module according to an embodiment of the invention.
Example 1
Referring to fig. 1 to 7, the piezoelectric haptic feedback module includes:
a panel 1, a back cover 5, a middle frame 3 between the panel 1 and the back cover 5, a piezoelectric element assembly 2 between the panel 1 and the middle frame 3 and fixed to the middle frame 3, and a circuit module 6 disposed on the back of the back cover 5;
the front surface of the panel 1 is pressed to trigger the piezoelectric element assembly 2 so that the piezoelectric element assembly 2 generates a trigger electric signal, and the trigger electric signal is transmitted to the circuit module 6 to generate an excitation signal for triggering the piezoelectric element assembly 2 by the circuit module 6. The piezoelectric element assembly 2 generates strong vibration after receiving the excitation signal and transmits the vibration to the panel 1, thereby realizing tactile feedback and good man-machine interaction.
The following describes the shape and structure of the data panel 1 in detail:
the specific shape of the panel 1 should be set according to the specific use environment, for example, the panel 1 may be rectangular, and the rectangle is not limited to square or rectangle. The panel 1 is provided with a key area, which may be, for example, a number key area, a function key area, or the like. The material of the panel 1 is preferably plastic.
The shape and structure of the piezoelectric element assembly 2 are described in detail below:
the piezoelectric element assembly 2 includes a plurality of piezoelectric elements arranged in an array,
the piezoelectric element comprises a substrate 21 against the back of the panel 1 and a piezoelectric ceramic plate 22 on the side of the substrate 21 facing away from the panel 1. Preferably, the piezoelectric ceramic sheet 22 is configured as a rectangle, which may be square or rectangular, for example, and further, the piezoelectric ceramic sheet 22 is a single-layer piezoelectric ceramic sheet 22 or a multi-layer piezoelectric ceramic sheet 22. Preferably, the substrate 21 is configured as a rectangle, which may be square or rectangular, for example, and the projected area of the piezoceramic sheet 22 on the substrate 21 is smaller than the area of the substrate 21. Further, the substrate 21 is made of metal, and the metal is capable of conducting an electrical signal, so as to transmit the electrical signal to the piezoelectric ceramic plate 22, so that the piezoelectric ceramic plate 22 generates local strong vibration.
It should be noted that the number of piezoelectric elements in the piezoelectric element assembly 2 may be specifically set according to the actual use requirement, and the number of piezoelectric elements needs to be determined according to the specific keys of the panel 1, for example, 6 keys are provided on the panel 1, and correspondingly, the piezoelectric element assembly 2 is provided with piezoelectric elements corresponding to the 6 keys one by one. For another example, 9 keys are provided on the panel 1, and the piezoelectric element assembly 2 is provided with piezoelectric elements corresponding to the 9 keys one by one. It should be noted that the above-mentioned keys should be interpreted as touch areas, i.e. areas for an operator to touch.
The following details of the structure and shape of the center 3 are as follows:
the middle frame 3 is provided with through holes 31 corresponding to the piezoelectric elements one by one for avoiding the piezoelectric ceramic plates 22 of the piezoelectric elements.
The center 3 is further provided with pin holes 32 at corners of the through holes 31, and the piezoelectric element is connected to the center 3 by pins 4 penetrating the pin holes 32 and connected to the substrate 21.
The number of pin holes 32 on each through hole 31 is four, and four pin holes 32 are located at the corners of the through hole 31.
The middle frame 3 is also provided with a metal contact 33 positioned at the edge of the through hole 31 and a wire 34 with two ends respectively connected with the metal contact 33 and the piezoelectric ceramic piece 22.
The structure and shape of the back cover 5 are described in detail below:
the rear cover plate 5 is provided with a first spring electrode pin 511 connected to the pin 4 and a second spring electrode pin 512 connected to the metal contact 33 on the side close to the panel 1. In the assembled state, the first spring electrode needle 511 is abutted against the pin 4, and the pin 4 is made of metal, so that the first spring electrode needle 511 and the pin 4 can be conducted in the energized state. The second spring electrode pin 512 abuts against the metal contact 33, and the second spring electrode pin 512 is electrically connected to the metal contact 33.
The structure and shape of the circuit module 6 are described in detail below:
the circuit module 6 includes a power input port 61, a logic circuit 63, a signal output port 62, and a drive circuit 64;
a power input port 61 for supplying power to the circuit module 6;
the logic circuit 63 is configured to output a control signal to the signal output port 62 after the trigger signal generated when the piezoelectric element is deformed is received, and output a port determination signal to the driving circuit 64;
a driving circuit 64 for receiving the port determination signal outputted from the logic circuit 63 and outputting an excitation signal to the piezoelectric element;
the signal output port 62 is used for receiving and outputting the control signal generated by the logic circuit 63.
The specific operation of the above-mentioned circuit module 6 is briefly described as follows:
when in use, the front surface of the panel 1 is pressed, the piezoelectric element deforms, the piezoelectric element generates a trigger signal, the trigger signal is input into the logic circuit 63 through the lead 34 and the metal contact 33, and after being judged and processed by the logic circuit 63, a corresponding control signal is output to the signal output port 62, and the control signal is used for controlling related electrical equipment (for example, a mobile phone is used as an example, and the control signal can dial a telephone number). Meanwhile, the logic circuit 63 generates a port determination signal, and inputs the port determination signal to the driving circuit 64, and the driving circuit 64 receives the port determination signal and generates an excitation signal, and inputs the excitation signal to the piezoelectric element of the corresponding port, and the piezoelectric element generates deformation vibration, and the vibration is transferred to the panel 1, thereby generating tactile feedback, and it should be noted that the corresponding port means a port corresponding to the piezoelectric element corresponding to the pressing position of the panel 1.
Example 2
A terminal comprising the piezoelectric haptic feedback module of embodiment 1.
The terminal may be, for example, a mobile phone, a refrigerator, a microwave oven, etc.
The invention provides a piezoelectric type tactile feedback module, which comprises a panel 1, a back cover plate 5, a middle frame 3 positioned between the panel 1 and the back cover plate 5, a piezoelectric element assembly 2 positioned between the panel 1 and the middle frame 3 and fixed on the middle frame 3, and a circuit module 6 arranged on the back of the back cover plate 5; the working principle of the piezoelectric type tactile feedback module provided by the invention is briefly described as follows:
the front surface of the panel 1 is pressed to trigger the piezoelectric element assembly 2 so that the piezoelectric element assembly 2 generates a trigger electric signal, the trigger electric signal is transmitted to the circuit module 6 to generate an excitation signal for triggering the piezoelectric element assembly 2 by the circuit module 6, and the piezoelectric element assembly 2 generates strong vibration and transmits the vibration to the panel 1 after receiving the excitation signal, so that the tactile feedback is realized.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (5)
1. A piezoelectric haptic feedback module, comprising:
the piezoelectric element assembly comprises a panel, a rear cover plate, a middle frame, a piezoelectric element assembly and a circuit module, wherein the middle frame is positioned between the panel and the rear cover plate;
triggering the piezoelectric element assembly after the front surface of the panel is pressed so as to enable the piezoelectric element assembly to generate a triggering electric signal, and generating an excitation signal for triggering the piezoelectric element assembly by the circuit module after the triggering electric signal is transmitted to the circuit module;
the piezoelectric element assembly comprises a plurality of piezoelectric elements arranged in an array, wherein the piezoelectric elements comprise a substrate abutted against the back surface of the panel and a piezoelectric ceramic piece positioned on one side of the substrate away from the panel;
the middle frame is provided with through holes which are in one-to-one correspondence with the piezoelectric elements and are used for avoiding the piezoelectric ceramic plates of the piezoelectric elements;
the middle frame is also provided with pin holes positioned at the corners of the through holes, and the piezoelectric element is connected with the middle frame through pin posts penetrating through the pin holes and connected with the substrate;
the middle frame is also provided with a metal contact positioned at the edge of the through hole and a wire with two ends respectively connected with the metal contact and the piezoelectric ceramic piece;
and one side of the rear cover plate, which is close to the panel, is provided with a first spring electrode needle connected with the pin column and a second spring electrode needle connected with the metal contact.
2. The piezoelectric haptic feedback module as recited in claim 1, wherein,
the number of the pin holes on each through hole is four, and the four pin holes are positioned at the corners of the through hole.
3. The piezoelectric haptic feedback module of claim 1, wherein the circuit module comprises a power input port, a logic circuit, a signal output port, and a drive circuit;
the power input port is used for supplying power to the circuit module;
the logic circuit is used for receiving a trigger electric signal generated when the piezoelectric element is deformed, outputting a control signal to the signal output port after judgment, and outputting a port judgment signal to the driving circuit;
the driving circuit is used for receiving the port judging signal output by the logic circuit and outputting an excitation signal to the piezoelectric element;
the signal output port is used for receiving and outputting the control signal generated by the logic circuit.
4. The piezoelectric haptic feedback module as recited in claim 3, wherein,
the substrate and the pin are made of metal, and the panel is made of plastic.
5. A terminal comprising a piezoelectric haptic feedback module as recited in any one of claims 1-4.
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| CN201710189853.8A CN106843508B (en) | 2017-03-29 | 2017-03-29 | Piezoelectric type tactile feedback module and terminal |
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| CN201710189853.8A CN106843508B (en) | 2017-03-29 | 2017-03-29 | Piezoelectric type tactile feedback module and terminal |
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| CN106843508B true CN106843508B (en) | 2023-10-20 |
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| CN107329565B (en) * | 2017-06-15 | 2020-02-04 | 燕山大学 | Piezoelectric type tactile feedback actuator |
| CN111726434A (en) * | 2019-03-22 | 2020-09-29 | 北京小米移动软件有限公司 | Terminal and terminal control method |
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