CN215769677U

CN215769677U - Touch module and electronic equipment

Info

Publication number: CN215769677U
Application number: CN202121120819.3U
Authority: CN
Inventors: 张艳良; 吴宜青; 冯昀
Original assignee: Jiangxi Oumaisi Microelectronics Co Ltd
Current assignee: Jiangxi Oumaisi Microelectronics Co Ltd
Priority date: 2021-05-24
Filing date: 2021-05-24
Publication date: 2022-02-08
Anticipated expiration: 2031-05-24

Abstract

The utility model relates to a touch module and electronic equipment, wherein the touch module comprises a touch pad, a circuit board, a supporting plate and a plurality of piezoelectric units, the piezoelectric units are distributed between the touch pad and the supporting plate, each piezoelectric unit comprises an elastic sheet, a piezoelectric motor and a flexible circuit board, and the touch module comprises: the elastic sheet is provided with a piezoelectric connection area and an edge connection area which is connected to the periphery of the piezoelectric connection area in a bending mode, one side of the elastic sheet is connected to the first part through the edge connection area, a space is formed between the piezoelectric connection area and the first part, the other side of the elastic sheet is connected to the second part through the piezoelectric connection area, the first part is one of the touch pad and the support plate, and the second part is the other part; the piezoelectric motor is arranged in the piezoelectric connection area and is electrically connected with a circuit board arranged on one side of the first component close to the piezoelectric motor through a flexible circuit board; the touch pad is convenient and quick to assemble, low in cost and capable of achieving multi-point layout of the piezoelectric units, and enables the surface of the touch pad to vibrate uniformly.

Description

Touch module and electronic equipment

Technical Field

The present invention relates to the field of touch technologies, and in particular, to a touch module and an electronic device.

Background

Along with the development of science and technology and the urgent need of people for mobile terminal functionality and sensory experience, the touch module is widely applied to touch devices such as notebook computers, touch screen mobile phones, vehicle-mounted equipment and industrial control equipment in a good interaction mode between the touch module and users.

At present, the touch module generally is mechanical type structure, and this kind of structural style can not provide abundant experience such as vibration feedback and feel, and the inhomogeneous problem of surface vibration generally exists in a few touch modules that have the vibration feedback function, especially touch module that the touch feedback surface is very big, more exists and can not divide the regional vibration as required, overall structure thickness, vibration feedback intensity weak, overall cost shortcoming such as expensive, is unfavorable for touch feedback technical use and popularization.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a touch module and an electronic device for solving the problems of uneven vibration, heavy structure, weak vibration feedback strength and high cost of the touch module.

The utility model provides a touch module, includes touch pad, circuit board, backup pad and a plurality of piezo-electric unit, and is a plurality of piezo-electric unit distributes the touch pad with between the backup pad, piezo-electric unit includes shell fragment, piezoelectric motor and flexible circuit board, wherein:

the elastic sheet is provided with a piezoelectric connection area and an edge connection area which is connected to the periphery of the piezoelectric connection area in a bending mode, one side of the elastic sheet is connected to a first part through the edge connection area, a space is formed between the piezoelectric connection area and the first part, the other side of the elastic sheet is connected to a second part through the piezoelectric connection area, the first part is one of the touch pad and the support plate, and the second part is the other part;

the piezoelectric motor is arranged in the piezoelectric connection area and is electrically connected with the circuit board arranged on one side, close to the piezoelectric motor, of the first component through the flexible circuit board.

In the touch module, the piezoelectric motor is arranged in the piezoelectric connection area of the elastic sheet to fix the piezoelectric motor and the elastic sheet into a whole, the piezoelectric motor and the circuit board are electrically connected through the flexible circuit board, the piezoelectric motor and the circuit board are connected to the second part through the piezoelectric connection area and the first part through the edge connection area of the elastic sheet, the first part is one of the touch pad and the support plate, the second part is the other of the touch pad and the support plate, the piezoelectric motor and the elastic sheet which are fixed into a whole are fixed between the touch pad and the support plate, and the touch module is conveniently and quickly assembled, so that the overall cost is low, mass production and the use and popularization of a piezoelectric touch technology are facilitated, the piezoelectric unit is simple, light, thin and small in structure, and the whole structure is convenient to realize the light weight and the small size; compared with the existing mechanical touch control, the piezoelectric motor generates in-plane stretching motion when receiving an electric signal, the elastic sheet is driven to generate vertical deformation perpendicular to the plane where the piezoelectric motor is located, the area, facing the piezoelectric unit, in the touch pad is pushed to generate vertical reciprocating vibration excitation, and vibration feedback is achieved. Through limiting the interval between the piezoelectric connection area and the first part, a gap can be formed between the piezoelectric motor and the touch panel or between the piezoelectric motor and the touch panel and between the piezoelectric motor and the touch panel, the vibration feedback is facilitated, the amplitude of the vibration feedback is large, and the vibration feedback strength is enhanced. Through set up a plurality of piezo-electric unit between touch pad and backup pad, realize piezo-electric unit's multiple spot overall arrangement, and then can realize the vibration feedback of different regions on the touch pad for the vibration on whole touch pad surface is even.

In one embodiment, the elastic sheet includes a sheet body and at least two support legs disposed on the periphery of the sheet body, at least two support legs form the edge connecting area and are fixed on the first component directly or through the flexible circuit board, and the sheet body forms the piezoelectric connecting area and protrudes outward relative to the support legs in a direction away from the first component.

According to the touch module, the structure of the elastic sheet is limited, so that the elastic sheet can be conveniently installed, and a gap is formed between the piezoelectric connecting area and the first component.

In one embodiment, the plate body is a disc-shaped structure, the number of the support legs is three, and three support legs are uniformly arranged around the plate body.

According to the touch module, the structural stability of the elastic sheet is good through the shape of the board body, the number of the support legs and the position relation.

In one embodiment, the number of the support legs is two, and the two support legs are symmetrically arranged on two sides of the plate body and are integrally formed with the plate body into an arch structure.

The touch module is convenient for mounting the elastic sheet through the number and the position relation of the support legs.

In one embodiment, the piezoelectric motor is disposed on a side of the piezoelectric connection region adjacent to the first member, and a side of the piezoelectric connection region remote from the first member is fixed to the second member.

According to the touch module, the elastic connection between the elastic sheet and the first component and between the elastic sheet and the second component can be conveniently realized by limiting the position of the piezoelectric motor and the connection form between the piezoelectric motor and the second component.

In one embodiment, the flexible circuit board is attached to one side of the elastic sheet close to the first part, and the piezoelectric motor is attached to one side of the flexible circuit board far away from the elastic sheet.

Above-mentioned touch module is through injecing setting position and the relation of connection of piezoelectric motor, flexible circuit board to comparatively conveniently realize piezoelectric motor's setting.

In one embodiment, the flexible circuit board extends to the edge connection area, the edge connection area is fixed on the circuit board through the flexible circuit board, the circuit board is electrically connected with the flexible circuit board, and the flexible circuit board is electrically connected with the piezoelectric motor.

According to the touch module, the setting position and the connection relation of the flexible circuit board are limited, so that the piezoelectric motor can be conveniently arranged and the piezoelectric motor and the circuit board can be conveniently electrically connected.

In one embodiment, the side of the piezoelectric connection region facing away from the first component is fastened to the second component directly or via a first spring block.

According to the touch module, the elastic connection between the elastic sheet and the second component is conveniently realized by limiting the connection mode of the piezoelectric connection area and the second component.

In one embodiment, the supporting plate and the touch panel are connected into a whole through a second elastic block.

The touch module is provided with the second elastic block to strengthen the connection between the support plate and the touch panel.

In addition, the utility model also provides electronic equipment which comprises a middle frame and the touch module according to any one of the technical schemes, wherein the touch module is arranged on the middle frame.

In the electronic equipment, the touch module can be conveniently and quickly assembled, so that the overall cost is low, mass production and use and popularization of a piezoelectric touch technology are facilitated, and the piezoelectric motor unit is simple, light, thin and small, and is convenient to realize the light, thin and small of the overall structure; compared with the existing mechanical touch control, the method can realize vibration feedback, has larger vibration feedback amplitude, and enhances the vibration feedback strength; meanwhile, the multipoint layout of the piezoelectric units is realized, so that the vibration feedback of different areas on the touch pad can be realized, and the vibration of the surface of the whole touch pad is uniform. Therefore, the electronic equipment with the touch module has the advantages of low overall cost, strong vibration feedback effect and good vibration uniformity, and is convenient to realize lightness, thinness, mass production and use and popularization of the piezoelectric touch technology.

Drawings

Fig. 1 is a schematic structural diagram of a touch module according to an embodiment of the utility model;

FIG. 2 is a schematic structural diagram of a module including a piezoelectric unit, a touch panel, and a second elastic block according to an embodiment of the present invention;

FIG. 3 is a schematic diagram illustrating the operation of a piezoelectric unit according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a touch module according to another embodiment of the present invention;

fig. 5 is a schematic structural diagram of a piezoelectric unit according to another embodiment of the present invention.

Reference numerals:

10. a touch module;

100. a touch panel;

200. a support plate;

300. a piezoelectric unit; 310. a spring plate; 311. a piezoelectric connection region; 312. an edge connection zone; 313. a plate body; 314. a support leg; 320. a piezoelectric motor; 330. a flexible circuit board;

400. a circuit board;

500. a first elastic block;

600. and a second elastic block.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The technical scheme provided by the embodiment of the utility model is described below by combining the accompanying drawings.

As shown in fig. 1, the present invention provides a touch module 10, which is applied to an electronic device, wherein the touch module 10 includes a touch panel 100, a support plate 200, a plurality of piezoelectric units 300 and a circuit board 400, the touch panel 100 and the support plate 200 are arranged in parallel, and the touch panel 100 and the support plate 200 are spaced apart by a certain distance, the circuit board 400 is arranged on one side of the touch panel 100 close to the support plate 200, or the circuit board 400 is arranged on one side of the support plate 200 close to the touch panel 100, and an electrical signal is applied to the piezoelectric units 300 through the circuit board 400 to control the piezoelectric units 300; in a specific configuration, the touch panel 100 may be a touch screen, or may be in other structural forms capable of implementing a touch function, the support plate 200 may be an independently disposed structural member, for example, a metal plate or a plastic plate, the support plate 200 may also be a structural member in the electronic device opposite to the touch panel 100, for example, a housing in the electronic device may serve as the support plate 200, the circuit board 400 may be a Printed Circuit Board (PCB), and the circuit board 400 may also be in other structural forms capable of implementing an electronic control function.

As shown in fig. 1 and 2, the number of the piezoelectric units 300 may be two, three, four, five, or more than five, the plurality of piezoelectric units 300 are distributed between the touch panel 100 and the support plate 200, the plurality of piezoelectric units 300 may be uniformly distributed on the surface of the touch panel 100 close to the support plate 200, and the plurality of piezoelectric units 300 may also be distributed differently according to the requirement, for example, the density of the piezoelectric units 300 at the middle position of the touch panel 100 is greater than the density of the piezoelectric units 300 at the edge position of the touch panel 100; the control modes of the plurality of piezoelectric units 300 are various, the plurality of piezoelectric units 300 can be controlled together, the plurality of piezoelectric units 300 can be controlled in groups in different manners, for example, the piezoelectric units 300 in each row or each column can be controlled together, and the plurality of piezoelectric units 300 can be controlled independently.

The piezoelectric unit 300 includes three parts, namely, a spring plate 310, a piezoelectric motor 320, and a flexible circuit board 330, wherein: the elastic sheet 310 may be a metal plate with good elasticity, such as a stainless steel plate and an aluminum alloy plate, and the elastic sheet 310 may also be a plastic plate, such as an acrylic plate and an ABS (acrylonitrile butadiene styrene) plastic plate, so that the elastic sheet 310 has fast response, large vibration displacement and high mechanical strength; of course, the structure and material of the elastic sheet 310 are not limited to this, and may be in other forms that can meet the requirements.

The elastic sheet 310 has a piezoelectric connection region 311 and an edge connection region 312, the edge connection region 312 is disposed on the periphery of the piezoelectric connection region 311, the edge connection region 312 and the piezoelectric connection region 311 are connected in a bending manner, one side of the elastic sheet 310 is connected to a first member through the edge connection region 312, a space is formed between the piezoelectric connection region 311 of the elastic sheet 310 and the first member, the other side of the elastic sheet 310 is connected to a second member through the piezoelectric connection region 311, the first member is one of the touch panel 100 and the support plate 200, and the second member is the other of the touch panel 100 and the support plate 200; in a specific arrangement, one side of the elastic sheet 310 may be connected to the touch panel 100 through the edge connection region 312, and a space is formed between the piezoelectric connection region 311 of the elastic sheet 310 and the touch panel 100 to form a deformation space of the elastic sheet 310, and the other side of the elastic sheet 310 is connected to the support plate 200 through the piezoelectric connection region 311; it is also possible that one side of the elastic piece 310 is connected to the support plate 200 through the edge connection region 312, and a space is provided between the piezoelectric connection region 311 of the elastic piece 310 and the support plate 200 to form a deformation space of the elastic piece 310, and the other side of the elastic piece 310 is connected to the touch panel 100 through the piezoelectric connection region 311.

The piezoelectric motor 320 is disposed in the piezoelectric connection region 311, the piezoelectric motor 320 includes a first electrode, a piezoelectric structure and a second electrode, which are stacked, the piezoelectric structure may be made of an organic piezoelectric material, an inorganic ceramic piezoelectric material, a single crystal piezoelectric material, a lead-free piezoelectric material, and the like, and the piezoelectric structure may be a piezoelectric layer or a piezoelectric ceramic. The first and second electrodes may be formed by depositing a conductive material on the piezoelectric structure, but the structural form of the first and second electrodes is not limited thereto, and for example, the first and second electrodes may be attached to the piezoelectric unit 322.

The piezoelectric motor 320 is electrically connected with the circuit board 400 through the flexible circuit board 330, and the circuit board 400 is fixedly arranged on one side of the first component, which is close to the piezoelectric motor 320; in a specific arrangement, the first electrode and the second electrode may be connected to different lines of the flexible circuit board 330, and the flexible circuit board 330 is connected to the circuit board 400; the first electrode may be connected to the flexible circuit board 330, the second electrode may be directly connected to the circuit board 400 by a wire or the like, and the flexible circuit board 330 may be connected to the circuit board 400. The circuit board 400 is fixed to one of the touch pad 100 and the support plate 200, and the circuit board 400 and the piezoelectric motor 320 are located on the same side of the dome 310.

In the touch module 10, the piezoelectric motor 320 is disposed in the piezoelectric connection region 311 of the spring plate 310 to fix the piezoelectric motor 320 and the spring plate 310 into a whole, the electrical connection between the piezoelectric motor 320 and the wiring board 400 is made through the flexible circuit board 330, connected to the second part by a piezo-electric connection region 311 and to the first part by an edge connection region 312 of the dome 310, and the first member is one of the touch panel 100 and the support plate 200, the second member is the other of the touch panel 100 and the support plate 200, to fix the piezoelectric motor 320 and the dome 310 fixed as one body between the touch panel 100 and the support plate 200, so as to conveniently and rapidly realize the assembly of the touch module 10, thereby reducing the overall cost, facilitating the realization of mass production and the use and popularization of piezoelectric touch technology, the piezoelectric unit 300 is simple, light, thin and small in structure, and is convenient for realizing the light, thin and light integral structure; compared with the existing mechanical touch control, the piezoelectric motor 320 generates in-plane stretching motion when receiving an electrical signal, and drives the elastic sheet 310 to generate vertical deformation perpendicular to the plane where the piezoelectric motor 320 is located, so as to push the area of the touch panel 100, which is directly opposite to the piezoelectric unit 300, to generate vertical reciprocating vibration excitation, thereby realizing vibration feedback. By defining the interval between the piezoelectric connection region 311 and the first member, a gap can be formed between the piezoelectric motor 320 and the touch panel 100 or the support plate 200, which is beneficial to achieving vibration feedback of the piezoelectric motor 320 and the touch panel 100, and the amplitude of the vibration feedback can be made larger, thereby enhancing the strength of the vibration feedback. By providing a plurality of piezoelectric units 300 between the touch panel 100 and the support plate 200, a multi-point layout of the piezoelectric units 300 is realized, and thus vibration feedback of different areas on the touch panel 100 can be realized, so that vibration of the entire surface of the touch panel 100 is uniform.

As shown in fig. 3, the pressure sensing and touch feedback process is as follows: when an external force presses the touch pad 100, the piezoelectric unit 300 corresponding to the lower portion of the touch pad 100 is stressed, the elastic sheet 310 deforms to transmit the force to the piezoelectric unit 300, the piezoelectric unit 300 and the elastic sheet 310 deform together, the piezoelectric motor 320 generates an output voltage through a positive piezoelectric effect, the output voltage is transmitted to the circuit board 400 through the flexible circuit board 330 to sense the pressure, the circuit board 400 transmits the voltage to the piezoelectric motor 320 through the flexible circuit board 330, the piezoelectric motor 320 generates a force through an inverse piezoelectric effect and deforms under the force, the elastic sheet 310 is driven to deform, and the elastic sheet 310 drives the touch pad 100 to correspondingly vibrate therewith, so that local touch feedback is achieved.

To facilitate the touch feedback, as shown in fig. 1 and fig. 2, in a preferred embodiment, the resilient plate 310 includes a plate body 313 and at least two legs 314, the legs 314 are disposed on the periphery of the plate body 313, and the at least two legs 314 form an edge connection area 312, as shown in fig. 1 and fig. 4, the at least two legs 314 may be fixed on the first component by a flexible circuit board 330, or the at least two legs 314 may be directly fixed on the first component by gluing, mechanical connection, or the like, the plate body 313 forms a piezoelectric connection area 311, and the plate body 313 protrudes outward from the legs 314 in a direction away from the first component. When specifically setting up, plate body 313 and stabilizer blade 314 can be connected as an organic whole through modes such as welding, buckle connection, gluing, threaded connection, shell fragment 310 can also be through modes integrated into one piece such as sheet metal component bending, moulding plastics, casting.

The touch module 10 protrudes outward from the supporting leg 314 through the limiting plate 313, and the supporting leg 314 is fixed on the first component, which is one of the touch pad 100 and the supporting plate 200, so that the distance between the elastic sheet 310 and the first component gradually increases from the two ends of the elastic sheet 310 to the middle extending direction of the elastic sheet 310, so that the elastic sheet 310 is erected on the first component, a deformation space of the elastic sheet 310 is formed between the touch pad 100 and the supporting plate 200, a gap is always formed between the piezoelectric connecting area 311 and the first component, and the touch feedback is facilitated. In assembly, the connection between the resilient piece 310 and the touch pad 100 and the supporting plate 200 can be conveniently and quickly achieved by connecting the support leg 314 with the first component and connecting the plate body 313 with the second component. In a specific arrangement, the number of the supporting legs 314 may be two, three, four, five, or more than five, the plurality of supporting legs 314 may be uniformly distributed on the periphery of the plate body 313, and the plurality of supporting legs 314 are arranged at intervals, it should be noted that the structural form of the resilient piece 310 is not limited to the structural form of the plate body 313 and the supporting legs 314, but may also be other types of structural form in which opposite edges protrude, for example, the resilient piece 310 includes a plate body 313 and an annular supporting member arranged around the plate body 313, and the supporting member protrudes outward from the plate body 313 in a direction away from the first component.

The structure of the resilient plate 310 has various forms, and specifically, as shown in fig. 2, the plate body 313 may have a disc-shaped structure, the number of the legs 314 is three, and the three legs 314 are uniformly arranged around the plate body 313.

Above-mentioned touch module 10, three stabilizer blade 314 encircle plate body 313 and evenly set up, and plate body 313 is discoid structure, so that shell fragment 310 is symmetrical structure about the axis of plate body 313, first part is connected to three stabilizer blade 314, realize the stable connection between shell fragment 310 and touch panel 100 or shell fragment 310 and the backup pad 200, make the structural stability of shell fragment 310 better, and the structure of shell fragment 310 of this form is convenient for increase the intensity of vibration feedback through the radial diameter size of increase piezoelectric motor 320, realize local area's large tracts of land vibration feedback.

The spring plate 310 has various structural forms, specifically, as shown in fig. 4, the number of the legs 314 is two, two legs 314 are symmetrically arranged on two sides of the plate body 313, and the two legs 314 and the plate body 313 are integrally formed into an arch structure. In a specific arrangement, the arch structure is a long arch, and the middle position of the arch structure is convexly arranged.

In the touch module 10, the support legs 314 are symmetrically disposed on two sides of the board body 313, so that the elastic sheet 310 is symmetrically structured about the central axis of the board body 313, the two support legs 314 are respectively connected to the first component, thereby achieving convenient and fast installation between the elastic sheet 310 and the touch panel 100 or between the elastic sheet 310 and the supporting board 200, and the connection between the elastic sheet 310 and the touch panel 100 or between the elastic sheet 310 and the supporting board 200 is stable. The structure of the elastic sheet 310 is small, so that the arrangement density of the piezoelectric units 300 is improved, and the sensitivity of touch feedback is improved.

The piezoelectric motor 320 may be disposed in various ways, and in a preferred embodiment, as shown in fig. 1 and 2, the piezoelectric motor 320 is disposed on a side of the piezoelectric connection region 311 close to the first member, and a side of the piezoelectric connection region 311 far from the first member is fixed to the second member.

Specifically, the side of the piezoelectric connection region 311 remote from the first member may be directly fixed to the second member, or the side of the piezoelectric connection region 311 remote from the first member may be fixed to the second member by the first elastic block 500.

In the touch module 10, one side of the piezoelectric connection region 311 is connected to the piezoelectric motor 320, and the other side of the piezoelectric connection region 311 is connected to the support plate 200 or the touch panel 100, so that the connection between the piezoelectric motor 320 and the elastic sheet 310, the connection between the support plate 200 or the piezoelectric motor 320 and the elastic sheet 310, and the connection between the piezoelectric motor 320 and the touch panel 100 can be conveniently implemented. The edge connection area 312 of the elastic sheet 310 is connected with the first part, the piezoelectric connection area 311 of the elastic sheet 310 is directly connected with the second part, the first part is one of the touch panel 100 and the support plate 200, the second part is the other of the touch panel 100 and the support plate 200, at this time, the elastic sheet 310 is elastically connected with the touch panel 100 and the support plate 200, and the distance between the touch panel 100 and the support plate 200 is small, so that the touch module 10 is light and thin; and the edge connection area 312 of the elastic sheet 310 is connected with the first part, the piezoelectric connection area 311 of the elastic sheet 310 is connected with the second part through the first elastic block 500, the first part is one of the touch panel 100 and the support plate 200, the second part is the other of the touch panel 100 and the support plate 200, at this time, the elastic sheet 310 is also in elastic connection with the touch panel 100 and the support plate 200, and at this time, the deformation space of the elastic sheet 310 is large, so that high-strength vibration feedback is convenient to realize. Therefore, by defining the connection manner of the piezoelectric connection region 311 and the second member, the elastic connection between the resilient piece 310 and the second member is more conveniently achieved.

In a specific arrangement, the number of the first elastic blocks 500 may be one or more, and the material of the first elastic blocks 500 may be foam, rubber, plastic, or other elastic materials, for example, the first elastic blocks 500 may be EVA porous plates with a hardness of 30A-50A; of course, the material of the first elastic block 500 is not limited to this, and other forms can be used to satisfy the elastic requirement, for example, the first elastic block 500 may be a metal spring. The first elastic block 500 may fixedly connect the elastic piece 310 and the supporting plate 200 or the elastic piece 310 and the touch pad 100 by gluing, mechanical connection, or the like, and the preferred connection mode may be double-sided adhesive connection, snap connection, concave-convex fit connection, or threaded connection; of course, the connection manner of the first elastic block 500, the elastic sheet 310 and the touch pad 100, or the first elastic block 500, the elastic sheet 310 and the supporting plate 200 is not limited thereto, and other manners may also be adopted, for example, the first elastic block 500 is directly injection-molded on the supporting plate 200, and the first elastic block 500 is glued with the elastic sheet 310.

In order to facilitate the electrical connection between the piezoelectric motor 320 and the circuit board 400, as shown in fig. 1 and 4, specifically, the flexible circuit board 330 is attached to the elastic sheet 310, and the flexible circuit board 330 is located on a side of the elastic sheet 310 close to the first component, the piezoelectric motor 320 is attached to the flexible circuit board 330, and the piezoelectric motor 320 is located on a side of the flexible circuit board 330 away from the elastic sheet 310.

Specifically, the flexible circuit board 330 extends to the edge connection area 312, the edge connection area 312 is fixed on the circuit board 400 through the flexible circuit board 330, the circuit board 400 is electrically connected to the flexible circuit board 330, and the piezoelectric motor 320 is electrically connected to the flexible circuit board 330. In particular arrangements, the flexible circuit board 330 may completely cover the edge attachment region 312 and the flexible circuit board 330 may also partially cover the edge attachment region 312, e.g., the flexible circuit board 330 may cover 1/2, 2/3, 3/4, etc. of the edge attachment region 312; the circuit board 400 and the flexible circuit board 330 may be electrically connected by surface mounting, and the piezoelectric motor 320 and the flexible circuit board 330 may also be electrically connected by surface mounting.

In the touch module 10, the piezoelectric motor 320 is attached to the flexible circuit board 330, and the flexible circuit board 330 is attached to the elastic sheet 310, so as to conveniently realize the assembly of the piezoelectric unit 300 and the fixed connection between the piezoelectric motor 320 and the elastic sheet 310, and the flexible circuit board 330 is limited to extend to the edge connection area 312, so that the edge connection area 312 is fixed on the circuit board 400 through the flexible circuit board 330, so as to conveniently realize the fixed connection between the piezoelectric motor 320 and the circuit board 400 as well as between the piezoelectric motor 320 and the elastic sheet 310; the piezoelectric motor 320 is electrically connected to the flexible circuit board 330, and the circuit board 400 is electrically connected to the flexible circuit board 330, so that the piezoelectric motor 320 and the circuit board 400 are electrically connected to each other. In a specific arrangement, the assembly of the piezoelectric unit 300 and the fixed connection between the piezoelectric motor 320 and the circuit board 400 and the spring plate 310 are not limited to the above-mentioned attachment method, and may be other methods that can meet the requirements, and the method for achieving the electrical connection between the piezoelectric motor 320 and the circuit board 400 is not limited to the above-mentioned surface mounting process, and may also be other methods that can meet the requirements.

In order to enhance the connection between the support plate 200 and the touch panel 100, as shown in fig. 5, in a preferred embodiment, the support plate 200 and the touch panel 100 are integrally connected by a second elastic block 600.

Above-mentioned touch-control module 10, through setting up second elastic block 600, second elastic block 600 connects backup pad 200 and touch pad 100 to strengthen the connection effect between backup pad 200 and the touch pad 100, avoid backup pad 200 and touch pad 100 separation when falling etc. and receiving powerful impact force, influence product property ability, and second elastic block 600 takes place deformation thereupon when vibrating about touch pad 100, and can not influence the effect of vibration feedback. When the touch panel is specifically arranged, the number of the second elastic blocks 600 may be one, two, three, four or more, the plurality of second elastic blocks 600 may be arranged on two sides of the touch panel 100, or the plurality of second elastic blocks 600 may be arranged around the touch panel 100, the second elastic blocks 600 may be made of elastic materials such as foam, rubber, plastics, and the like, for example, the second elastic blocks 600 may be EVA porous plates with a hardness of 30A-50A; of course, the material of the second elastic block 600 is not limited to this, and other forms capable of satisfying the elastic requirement may also be adopted, for example, the second elastic block 600 may be a metal spring. The second elastic block 600 may be fixedly connected to the touch panel 100 and the support plate 200, the touch panel 100 and the circuit board or the support plate 200 and the circuit board by gluing, mechanical connection, or the like, and the preferable connection mode may be double-sided adhesive connection, snap connection, concave-convex fit connection, or threaded connection; of course, the connection between the second elastic block 600 and the touch panel 100 and the support plate 200, the touch panel 100 and the circuit board, or the support plate 200 and the circuit board may be in other manners, for example, the second elastic block 600 is directly injection-molded on the support plate 200, and the second elastic block 600 is glued to the touch panel 100 or the circuit board.

In addition, the utility model further provides an electronic device, which comprises a middle frame and the touch module 10 according to any one of the above technical solutions, wherein the touch module 10 is arranged on the middle frame. The touch device includes, but is not limited to, a notebook computer, a mobile phone, a vehicle-mounted device, and other devices requiring touch feedback and pressure sensing. For example, if the touch device is a notebook computer, the touch feedback module is an input touch feedback module of the notebook computer, which is also called a PC touch feedback module.

In the electronic device, since the touch module 10 can be assembled conveniently and quickly, the overall cost is low, mass production and use and popularization of piezoelectric touch technology are facilitated, and the piezoelectric unit 300 is simple, light, thin and small in structure, and convenient to achieve the lightness and thinness of the overall structure; compared with the existing mechanical touch control, the method can realize vibration feedback, has larger vibration feedback amplitude, and enhances the vibration feedback strength; meanwhile, the multi-point layout of the piezoelectric unit 300 is realized, and thus vibration feedback of different areas on the touch panel 100 can be realized, so that the vibration of the whole surface of the touch panel 100 is uniform. Therefore, the electronic device having the touch module 10 has low overall cost, strong vibration feedback effect, and good vibration uniformity, and is convenient for implementing lightness, thinness, mass production, and application and popularization of piezoelectric touch technology.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a touch module, its characterized in that includes touch pad, circuit board, backup pad and a plurality of piezo-electric unit, and is a plurality of piezo-electric unit distributes the touch pad with between the backup pad, piezo-electric unit includes shell fragment, piezoelectric motor and flexible circuit board, wherein:

2. The touch module of claim 1, wherein the resilient sheet comprises a sheet body and at least two support legs disposed on the periphery of the sheet body, the at least two support legs form the edge connection area and are fixed to the first member directly or via the flexible circuit board, and the sheet body forms the piezoelectric connection area and protrudes outward relative to the support legs in a direction away from the first member.

3. The touch module of claim 2, wherein the board body has a disc-shaped structure, the number of the legs is three, and the three legs are uniformly disposed around the board body.

4. The touch module of claim 2, wherein the number of the support legs is two, and the two support legs are symmetrically disposed on two sides of the board body and integrally formed with the board body to form an arch structure.

5. The touch module of any of claims 1-4, wherein the piezoelectric motor is disposed on a side of the piezoelectric connection region close to the first member, and a side of the piezoelectric connection region away from the first member is fixed to the second member.

6. The touch module of claim 5, wherein the flexible circuit board is attached to a side of the spring plate close to the first member, and the piezoelectric motor is attached to a side of the flexible circuit board away from the spring plate.

7. The touch module of claim 6, wherein the flexible circuit board extends to the edge connection area, the edge connection area is fixed on the circuit board through the flexible circuit board, the circuit board is electrically connected to the flexible circuit board, and the flexible circuit board is electrically connected to the piezoelectric motor.

8. The touch module of claim 5, wherein a side of the piezoelectric connection region away from the first member is fixed to the second member directly or through a first elastic block.

9. The touch module of claim 1, wherein the supporting plate and the touch pad are integrally connected by a second elastic block.

10. An electronic device comprising a middle frame, wherein the electronic device further comprises the touch module according to any one of claims 1-9, and the touch module is disposed on the middle frame.