WO2023124806A1

WO2023124806A1 - Press touch control structure and electronic device

Info

Publication number: WO2023124806A1
Application number: PCT/CN2022/136606
Authority: WO
Inventors: 魏迎迎; 俞胜平
Original assignee: 青岛歌尔智能传感器有限公司
Priority date: 2021-12-31
Filing date: 2022-12-05
Publication date: 2023-07-06
Also published as: CN114428568B; CN114428568A

Abstract

A press touch control structure and an electronic device. The press touch control structure comprises a control panel (1), the control panel (1) being provided with a touch control surface (101); the touch control surface (101) is provided with a mounting slot (201), a bottom part of the mounting slot (201) having a protrudingly arranged protruding part (202); and the press touch control structure further comprises a piezoelectric sensing member (4), the piezoelectric sensing member (4) being arranged within the mounting slot (201), and the piezoelectric sensing member (4) abutting against the protruding part (202). The press touch control structure can combine a sensing function with a press sensing function, and a more realistic tactile experience is provided to a user.

Description

Press touch structure and electronic equipment

This disclosure claims the priority of a Chinese patent application with application number 202111678046.5 and titled “Push Touch Touch Structure and Electronic Device” filed with the China Patent Office on December 31, 2021, the entire contents of which are incorporated by reference in this disclosure .

technical field

The present application relates to the technical field of tactile feedback, and more specifically, to a push-touch structure and electronic equipment.

Background technique

In recent years, with the development of science and technology, various electronic products have gradually entered thousands of households and become people's daily necessities, and consumers have higher and higher requirements for the quality of electronic products. Among them, tactile feedback technology (Haptic or Tactile Feedbacks) is used in many electronic products. Haptic feedback technology can reproduce the tactile sensation for users through a series of actions such as force and vibration. Haptic feedback technology can be applied to assist the creation and control of virtual scenes or virtual objects in computer simulation, and enhance the remote control of machinery and equipment. In order to provide users with a more realistic experience, how to use tactile feedback technology to give users a more realistic tactile experience is a technical problem that manufacturers need to solve urgently.

Contents of the invention

An object of the present application is to provide a new technical solution for a push-touch structure and an electronic device.

According to the first aspect of the present application, a press touch structure is provided, the press touch structure includes:

A control panel, the control panel has a touch surface; the touch surface is provided with a mounting groove, and the bottom of the mounting groove protrudes and is provided with a raised portion;

A piezoelectric sensing element, the piezoelectric sensing element is arranged in the installation groove, and the piezoelectric sensing element is arranged in contact with the protrusion.

Optionally, the piezoelectric sensing element has a first surface and a second surface opposite to each other, wherein the first surface is in contact with the raised portion, and the second surface is not higher than the contact surface. control surface.

Optionally, the push-touch structure further includes an elastic substrate, the elastic substrate has a first surface and a second surface opposite to each other, the first surface is connected to the piezoelectric sensing element, the The second surface is embedded in the installation groove and abuts against the protrusion.

Optionally, a support step is provided on the edge of the installation groove, and the edge of the second surface of the elastic substrate abuts on the support step.

Optionally, the press touch structure further includes an elastic substrate, and the number of the piezoelectric sensing elements is two;

The elastic substrate has a first surface and a second surface opposite to each other, and the first surface and the second surface are respectively connected with one piezoelectric sensing element.

Optionally, the touch surface protrudes from the side of the installation groove to provide a limiting block.

Optionally, two limit blocks are arranged symmetrically.

Optionally, the press touch structure further includes a circuit board, and the circuit board is electrically connected to the piezoelectric sensing element.

Optionally, the piezoelectric induction element is a piezoelectric ceramic sheet.

According to a second aspect of the present application, an electronic device is provided, the electronic device comprising the push-touch structure as described in the first aspect.

According to an embodiment of the present application, a push touch structure is provided, in which a piezoelectric induction element is provided in an installation groove opened on the touch surface of the control panel, and the piezoelectric induction element abuts against a protrusion in the installation groove; The user presses the surface of the piezoelectric sensing part away from the raised part with his hand, the piezoelectric sensing part exerts pressure on the raised part, and at the same time, the raised part exerts a reaction force on the piezoelectric sensing part, and the piezoelectric sensing part will move under the action of the pressing force. A slight deformation occurs, which will cause a change in the electrical signal, and the change in the electrical signal acts as a sensor; at the same time, the piezoelectric sensing part produces a vibration effect under the pressing action, so that the user's hand will feel the vibration. There is a sense of pressure, that is, the piezoelectric sensor gives the user a feedback of pressing, which plays the function of pressing. Therefore, the press-touch structure can combine the sensing function with the press-sensing function, so as to bring a more realistic tactile experience to the user.

Other features of the present application and advantages thereof will become apparent through the following detailed description of exemplary embodiments of the present application with reference to the accompanying drawings.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the embodiments of the application and together with the description serve to explain the principles of the application.

FIG. 1 is a structural schematic diagram 1 of a push-touch structure according to an embodiment of the present application;

FIG. 2 is a second structural schematic diagram of a push-touch structure according to an embodiment of the present application;

FIG. 3 is a structural schematic diagram III of a push-touch structure according to an embodiment of the present application;

FIG. 4 is a structural schematic diagram 4 of a push-touch structure according to an embodiment of the present application;

FIG. 5 is a fifth structural schematic diagram of a press touch structure according to an embodiment of the present application.

Explanation of reference signs:

1. Control panel; 101. Touch surface; 102. Limiting block; 201. Installation groove; 202. Protrusion; 203. Supporting step; 3. Elastic substrate; 4. Piezoelectric sensor; 5. Circuit board .

Detailed ways

Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and in no way serves as any limitation of the application, its application or uses.

Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the description.

In all examples shown and discussed herein, any specific values should be construed as exemplary only, and not as limitations. Therefore, other instances of the exemplary embodiment may have different values.

It should be noted that like numbers and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further discussion in subsequent figures.

Referring to FIGS. 1-5 , according to an embodiment of the present application, a push-touch structure is provided. The push touch structure includes a control panel 1, the control panel 1 has a touch surface 101; the touch surface 101 is provided with a mounting groove 201, and the bottom of the mounting groove 201 is protrudingly provided with a raised portion 202; The push touch structure further includes a piezoelectric sensing element 4 , the piezoelectric sensing element 4 is disposed in the installation groove 201 , and the piezoelectric sensing element 4 is disposed in contact with the protrusion 202 .

When the push touch structure provided by the embodiment of the present application is in use, the user presses the surface of the piezoelectric sensing element 4 away from the raised portion 202 with his hand, and the piezoelectric sensing element 4 exerts pressure on the raised portion 202, and at the same time, the raised portion 202 Applying a reaction force to the piezoelectric sensing element 4, the piezoelectric sensing element 4 will undergo a slight deformation under the action of the pressing force, which will cause a change in the electrical signal, and the change in the electrical signal will serve as a sensing function; at the same time Under the action of pressing, the piezoelectric sensing element 4 produces a vibration effect, so that the user's hand will feel the existence of vibration, that is, the piezoelectric sensing element 4 gives the user a pressing feedback, and plays a function of pressing sensing. Therefore, the press-touch structure can combine the sensing function with the press-sensing function, so as to bring a more realistic tactile experience to the user. More specifically, in the push-touch structure provided in the embodiment of the present application, the mounting groove 201 and the raised portion 202 form a vibration collecting mechanism, which can gather the vibration effect generated by the piezoelectric sensing element 4 within the scope of the mounting groove 201 , especially gathered within the range of the raised portion 202, the raised portion 202 transmits vibrations outward, which plays a role of vibration transmission, and the raised portion 202 can control the range of the vibration. The cross-sectional shape of the protruding part 202 may be circular, or other shapes, such as rectangle, square or triangle. More specifically, the material of the control panel 1 can be, for example, plastic, glass, metal or other composite materials, which can be slightly deformed under a certain pressure.

In one embodiment, further, the piezoelectric induction element 4 is a piezoelectric ceramic sheet.

In this specific example, the specific material of the piezoelectric sensing element 4 is piezoelectric ceramics, and the piezoelectric sensing element 4 is formed into a sheet structure, that is, formed into a piezoelectric ceramic sheet; the piezoelectric ceramic sheet can act as a sensor Feedback vibration effect at the same time. Further specifically, the thickness of the piezoelectric ceramic sheet may be 0.1mm-2.0mm.

2-3, in one embodiment, further, the piezoelectric induction element 4 has a first surface and a second surface opposite to each other, wherein the first surface and the protrusion portion 202 , the second surface is not higher than the touch surface 101 .

In this specific example, after the piezoelectric sensing element 4 is embedded and installed in the installation groove 201, the inner surface (ie, the first surface) of the piezoelectric sensing element 4 abuts against the raised portion 202, and the piezoelectric sensing element 4 The outer surface (that is, the second surface) of the control panel 1 is flush with the touch surface 101, or lower than the touch surface 101; in this way, the entire pressing touch structure presents a relatively flat structure, which is conducive to vibration Gathering and transmission, and is conducive to the thin design of the entire press touch structure.

Referring to Fig. 1-Fig. 5, in one embodiment, further, the press touch structure further includes an elastic substrate 3, and the elastic substrate 3 has a first surface and a second surface opposite to each other, The first surface is connected to the piezoelectric induction element 4 , and the second surface is embedded in the installation groove 201 and abuts against the protrusion 202 .

In this specific example, an elastic substrate 3 is provided between the piezoelectric induction element 4 and the protruding portion 202, and the elastic substrate 3 and the protruding portion 202 can jointly ensure that the intensity and range of the vibration are controllable. The sheet 3 can be rigidly connected to the raised portion 202; and the elastic substrate 3 can prevent the piezoelectric sensing element 4 from directly acting on the raised portion 202, thereby protecting the piezoelectric sensing element 4 and effectively extending the The service life of the piezoelectric induction element 4 increases the reliability of the piezoelectric induction element 4 . In an optional example, the size of the elastic substrate 3 is larger than that of the piezoelectric sensing element 4 , and the piezoelectric sensing element 4 is connected to the middle area of the elastic substrate 3 . More specifically, the shape of the elastic substrate 3 matches the shape of the installation groove 201 , for example, it may be a rectangle, a circle or other shapes.

More specifically, the elastic substrate 3 can be selected from 301 stainless steel or 306 stainless steel; the elastic substrate 3 can also be selected from other metal materials, carbon fiber materials or glass fiber materials; further specifically, the thickness of the elastic substrate 3 can be 0.05 mm-0.5mm. Further specifically, the piezoelectric sensing element 4 is rigidly connected to the elastic substrate 3 , for example, glue or double-sided adhesive tape can be used for bonding.

Referring to FIG. 1 , in one embodiment, further, the edge of the mounting groove 201 is provided with a supporting step 203 , and the edge of the second surface of the elastic substrate 3 abuts against the supporting step 203 .

In this specific example, a support step 203 is provided on the edge of the installation groove 201, and the support step 203 can play a role of connecting and supporting the elastic substrate 3 and the piezoelectric induction element 4, so that the elastic substrate 3 is conveniently installed in the installation groove 201. Installation and fixing inside. More specifically, the central region of the second surface of the elastic substrate 3 abuts against the raised portion 202 , and the edge of the second surface of the elastic substrate 3 abuts against the supporting step 203 . Further specifically, the edge of the second surface of the elastic substrate 3 is adhesively connected to the supporting step 203 .

Referring to FIG. 5 , in one embodiment, further, the press touch structure further includes an elastic substrate 3, and the number of the piezoelectric sensing elements 4 is two; the elastic substrate 3 has The first surface and the second surface are opposite to each other, and the first surface and the second surface are respectively connected with one piezoelectric induction element 4 .

In this specific example, two piezoelectric induction elements 4 are provided, and the two piezoelectric induction elements 4 are respectively connected to the two opposite surfaces of the elastic substrate 3. It can be considered that the two piezoelectric induction elements 4 pass through the elastic The substrates 3 are connected to form a double-layer structure; further, more than two piezoelectric induction elements 4 can be provided. Moreover, each piezoelectric induction element 4 may also be a multi-layer structure. A plurality of piezoelectric sensing elements 4 and/or multi-layer piezoelectric sensing elements 4 are set, and on the premise that the total thickness of the piezoelectric sensing elements 4 is the same, a single piezoelectric sensing element and/or a single-layer piezoelectric sensing element can be The thickness of the piezoelectric sensing element is reduced, so the driving voltage required by the single piezoelectric sensing element and/or the single-layer piezoelectric sensing element can be reduced, and the pressing feedback force of the piezoelectric sensing element 4 can also be improved. In addition, the electrode structure of the piezoelectric sensing element 4 can be a single crystal structure or a double crystal structure.

Referring to FIGS. 1-5 , in one embodiment, further, the touch surface 101 protrudes from the side of the installation groove 201 to provide a limiting block 102 . Further, two limiting blocks 102 are arranged symmetrically.

In this specific example, the setting of the limit block 102 can limit the position and area where the vibration occurs, that is, the vibration effect is limited within the range where the limit block 102 is located, and the vibration is not allowed to spread out, which can effectively avoid The vibration is too diffuse, thereby enhancing the vibration effect and improving the tactile experience brought to the user. More specifically, the limiting block 102 can be integrally formed with the touch surface 101 of the control panel 1 , and the limiting block 102 can also be adhesively connected with the touch surface 101 of the control panel 1 .

Referring to FIGS. 1-5 , in an embodiment, further, the press touch structure further includes a circuit board 5 , and the circuit board 5 is electrically connected to the piezoelectric sensing element 4 .

In this specific example, the circuit board 5 is electrically connected to the piezoelectric induction element 4 to provide the piezoelectric induction element 4 with the required driving voltage. More specifically, the piezoelectric inductive element 4 is bonded to the circuit board 5 by solder paste, silver glue or irregular conductive tape, and can also be connected to the outside world by means of solder wires.

Further, as shown in FIG. 2, the size of the elastic substrate 3 and the piezoelectric sensing element 4 can be set larger; referring to FIG. 4, the size of the elastic substrate 3 and the piezoelectric sensing element 4 can also be set larger. Small.

According to another embodiment of the present application, an electronic device is provided, and the electronic device includes the above-mentioned push-touch structure.

The electronic device may be, for example, a mobile phone, an AR device, a VR device, a TWS headset, and a touch control part of a control panel inside a car or other electronic devices.

The above-mentioned embodiments focus on the differences between the various embodiments. As long as the different optimization features of the various embodiments do not contradict each other, they can be combined to form a better embodiment. Considering the brevity of the text, no further repeat.

Although some specific embodiments of the present application have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, rather than limiting the scope of the present application. Those skilled in the art will appreciate that modifications can be made to the above embodiments without departing from the scope and spirit of the application. The scope of the application is defined by the appended claims.

Claims

A press touch structure, characterized in that the press touch structure includes:

A control panel (1), the control panel (1) has a touch surface (101); the touch surface (101) is provided with an installation groove (201), and the bottom of the installation groove (201) protrudes and is provided with raised portion (202);

A piezoelectric induction element (4), the piezoelectric induction element (4) is arranged in the installation groove (201), and the piezoelectric induction element (4) is arranged in contact with the protrusion (202) .
The press touch structure according to claim 1, characterized in that, the piezoelectric sensing element (4) has a first surface and a second surface opposite to each other, wherein the first surface and the protrusion part (202), the second surface is not higher than the touch surface (101).
The push-touch structure according to claim 1, characterized in that, the push-touch structure further comprises an elastic substrate (3), and the elastic substrate (3) has a first surface and a second surface arranged opposite to each other. The first surface is connected to the piezoelectric induction element (4), and the second surface is embedded in the installation groove (201) and abuts against the protrusion (202).
The push touch structure according to claim 3, characterized in that, the edge of the installation groove (201) is provided with a support step (203), and the edge of the second surface of the elastic substrate (3) abuts against the on the support step (203).
The push-touch structure according to claim 1, characterized in that, the push-touch structure further comprises an elastic substrate (3), and the number of the piezoelectric sensing elements (4) is two;

The elastic substrate (3) has a first surface and a second surface arranged opposite to each other, and the first surface and the second surface are respectively connected with one piezoelectric induction element (4).
The push touch structure according to claim 1, characterized in that, the touch surface (101) protrudes from the side of the installation groove (201) and has a limiting block (102).
The push-touch structure according to claim 6, characterized in that, two limiting blocks (102) are arranged symmetrically.
The push-touch structure according to claim 1, characterized in that the push-touch structure further comprises a circuit board (5), and the circuit board (5) is electrically connected to the piezoelectric sensing element (4).
The push-touch structure according to claim 1, characterized in that the piezoelectric induction element (4) is a piezoelectric ceramic sheet.
An electronic device, characterized in that the electronic device comprises the push-touch structure according to any one of claims 1-9.