CN211236873U

CN211236873U - Touch feedback module and touch device

Info

Publication number: CN211236873U
Application number: CN201922477313.7U
Authority: CN
Inventors: 张艳良
Original assignee: Nanchang OFilm Biometric Identification Technology Co Ltd
Current assignee: Ofilm Microelectronics Technology Co ltd; Jiangxi OMS Microelectronics Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-08-11
Anticipated expiration: 2029-12-31

Abstract

The utility model relates to a touch-control feedback module and touch device, touch-control feedback module include elastic plate, a plurality of piezoelectric motor and a plurality of bearing structure, wherein: the elastic plate is provided with a first surface and a plurality of through grooves which penetrate through the elastic plate along the direction vertical to the first surface, the elastic plate is divided into a plate body and an elastic sheet by the through grooves, one end of the elastic sheet is fixedly connected with the plate body, and the other end of the elastic sheet forms a free end; the plurality of piezoelectric motors are at least partially arranged on the elastic sheets, the projection profile of the piezoelectric motors on the elastic plate along the direction vertical to the first surface falls into the profile of the through groove, each piezoelectric motor corresponds to at least one elastic sheet, and each elastic sheet corresponds to one piezoelectric motor; the supporting structures are arranged on one side, close to the touch pad, of the elastic sheet and correspond to the elastic sheet one to one, and the projection outlines of the supporting structures on the elastic sheet along the direction perpendicular to the first surface fall into the outlines of the through grooves corresponding to the supporting structures.

Description

Touch feedback module and touch device

Technical Field

The utility model relates to a touch-control technical field especially relates to a touch-control feedback module and touch device.

Background

For the touch devices needing touch feedback and pressure sensing, such as notebook computers, mobile phones and vehicle-mounted equipment, in order to realize the effects of touch feedback and pressure sensing, a touch feedback module is arranged in the touch device, and the touch feedback module is developing towards the direction of integrated type and no mechanical keys. The traditional touch feedback mostly adopts a linear motor technology, and the pressure sensing mostly adopts a strain gauge technology. Along with the development discovery of science and technology, piezoelectric material has the function that provides touch-control feedback and pressure perception simultaneously, consequently, is applied to piezoelectric material in the touch-control feedback module, can obtain better touch-control feedback and pressure perception's effect. However, the touch feedback module cannot achieve better effects on uniformity of touch feedback and consistency of pressure sensing.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a touch feedback module and a touch device for solving the problem that the touch feedback module cannot achieve better effects on uniformity of touch feedback and consistency of pressure sensing.

A touch feedback module comprises an elastic plate, a plurality of piezoelectric motors and a plurality of supporting structures, wherein:

the elastic plate is provided with a first surface close to the touch pad and a plurality of through grooves, the through grooves penetrate through the elastic plate along a direction perpendicular to the first surface, the elastic plate is divided into a plate body and a plurality of elastic sheets by the through grooves, one end of each elastic sheet is fixedly connected with the plate body, and the other end of each elastic sheet is separated from the plate body through the through groove to form a free end;

the plurality of piezoelectric motors are at least partially arranged on the elastic sheets, the projection outlines of the piezoelectric motors on the elastic plates along the direction perpendicular to the first surface fall into the outlines of the through grooves, each piezoelectric motor corresponds to at least one elastic sheet, and each elastic sheet corresponds to one piezoelectric motor;

the supporting structures are arranged on one side, close to the touch pad, of the elastic sheet, the supporting structures correspond to the elastic sheets one to one, and the projection outlines of the supporting structures on the elastic sheet in the direction perpendicular to the first surface fall into the outlines of the through grooves corresponding to the supporting structures.

Above-mentioned touch-control feedback module, use with the touch pad cooperation, this touch pad erects in the one side that the elastic sheet board was kept away from to bearing structure, a plurality of logical grooves that run through the elastic sheet along the direction of perpendicular to first surface form a plurality of shell fragments on the elastic sheet, each shell fragment can be followed the direction of perpendicular to first surface and vibrate from top to bottom, and can vibrate together with the piezoelectric motor that is located above that, when external force is pressed down the touch pad, transmit power for piezoelectric motor through bearing structure, piezoelectric motor and shell fragment are together bending deformation and produce voltage output through the positive piezoelectric effect, with the perception pressure, and piezoelectric motor received voltage signal this moment, produce bending deformation through the effect of reverse piezoelectric effect production power, it takes place bending deformation to drive the shell fragment, bearing structure vibrates thereupon, thereby transmit the vibration for the touch pad. Because the number of the elastic sheet structures formed by the elastic sheets, the piezoelectric motors and the supporting structures is multiple, different positions of the touch panel are pressed and correspond to the elastic sheet structures, the piezoelectric motors can output voltage signals, the voltage signals are small in fluctuation, the pressure sensing consistency is high, the elastic sheet structures simultaneously push the touch panel to vibrate, the touch panel can generate uniform displacement in the direction perpendicular to the first surface, and the uniformity of touch control feedback is improved.

In one embodiment, each of the piezoelectric motors is correspondingly disposed on one of the elastic pieces, or each of the piezoelectric motors is correspondingly disposed on at least two of the elastic pieces.

According to the touch feedback module, the piezoelectric motors correspond to the elastic sheets one by one, so that the number of elastic sheet structures formed by the elastic sheets, the piezoelectric motors and the supporting structures is large, and the consistency of pressure sensing and the uniformity of touch feedback can be improved; a piezoelectric motor corresponds to a plurality of elastic sheets, so that the number of parts is small, the processing and the manufacturing are convenient, and the compactness of the whole structure is improved.

In one embodiment, the through groove comprises a first through groove, the cross section of the first through groove parallel to the first surface is two opposite U-shaped openings, the first through groove comprises a first groove and a second groove which are spaced and arranged oppositely, the first groove and the second groove are respectively U-shaped grooves which penetrate through the elastic plate along the direction perpendicular to the first surface, the two U-shaped grooves extend from the inside of the elastic plate to the edge of the elastic plate towards the same side, the part of the elastic plate between the first groove and the second groove forms the elastic sheet, and the end surface of the free end coincides with the side surface of the elastic plate, which intersects with the first surface.

Above-mentioned touch-control feedback module is through setting up first recess and second recess respectively for the U-shaped groove that runs through the elastic plate along the direction of perpendicular to first surface to inject two U-shaped grooves and extend to the edge of elastic plate from the elastic plate is inside to same side, with the convenient and fast ground formation shell fragment that forms comparatively, this moment, the shell fragment is the partial elastic plate between first recess and the second recess.

In one embodiment, the number of the first through grooves is multiple, and the multiple first through grooves form a symmetrical structure about a center line perpendicular to the first surface.

According to the touch feedback module, the symmetrical structure is formed by limiting the first through grooves relative to the center line vertical to the first surface, so that the elastic sheets are symmetrically structured relative to the center line vertical to the first surface, the whole structure is symmetrical, and the consistency of pressure sensing and the uniformity of touch feedback are further improved.

In one embodiment, the through grooves include a second through groove, a cross section of the second through groove parallel to the first surface is an annular opening which is arranged oppositely, the second through groove includes a third groove, a fourth groove and a fifth groove which communicates the third groove and the fourth groove, the third groove, the fourth groove and the fifth groove are respectively located inside the elastic plate and penetrate through the elastic plate along a direction perpendicular to the first surface, the third groove and the fourth groove are arranged oppositely and located on the same side of the fifth groove, and a part of the elastic plate located between the third groove and the fourth groove forms the elastic piece.

According to the touch feedback module, the third groove, the fourth groove and the fifth groove are arranged, the third groove and the fourth groove are oppositely arranged and are located on the same side of the fifth groove, an elastic sheet is formed in the elastic plate, and at the moment, the elastic sheet is a part of the elastic plate between the third groove and the fourth groove.

In one embodiment, the number of the second through grooves is multiple, and the second through grooves form a symmetrical structure with respect to a center line perpendicular to the first surface.

According to the touch feedback module, the plurality of second through grooves form a symmetrical structure relative to the center line perpendicular to the first surface, so that the plurality of elastic sheets form a symmetrical structure relative to the center line perpendicular to the first surface, the whole structure is symmetrical, and the consistency of pressure sensing and the uniformity of touch feedback are further improved.

In one embodiment, the two spring plates, the piezoelectric motor and the two support structures form a spring plate structure with two suspension wings, the two spring plates are oppositely arranged along the direction towards two sides of the middle of the elastic plate, and the two support structures are correspondingly arranged on the two spring plates one by one.

According to the touch feedback module, the two elastic sheets, the piezoelectric motor and the two supporting structures are arranged to be the elastic sheet structure of the double-suspension wing, so that the elastic vibration effect is improved, and the touch feedback effect is improved.

In one embodiment, the piezoelectric motor is disposed on a surface of the elastic sheet facing the touch panel, and two ends of the supporting structure are respectively and fixedly disposed on opposite surfaces of the piezoelectric motor and the touch panel.

Above-mentioned touch-control feedback module through with piezoelectric motor and bearing structure stromatolite setting on the surface of shell fragment orientation touch pad to make the bearing structure of less thickness just can realize the vibration amplitude of the same size of touch pad, material saving, and make overall structure more compact.

In one embodiment, the piezoelectric motor is disposed on a surface of the elastic sheet facing the touch panel, two ends of the supporting structure are respectively and fixedly disposed on opposite surfaces of the elastic sheet and the touch panel, and the supporting structure is located on a side of the piezoelectric motor facing the free end.

According to the touch control feedback module, the piezoelectric motor and the supporting structure are arranged on the same layer on the surface of the elastic sheet facing the touch pad, so that the supporting structure with a smaller area can realize the same vibration amplitude of the touch pad, and the whole structure is more compact.

In one embodiment, the piezoelectric motor is disposed on a surface of the elastic sheet away from the touch panel, and two ends of the supporting structure are respectively and fixedly disposed on surfaces of the elastic sheet opposite to the touch panel.

Above-mentioned touch-control feedback module, the both sides of piezoelectric motor and bearing structure shell fragment to bearing structure sets up on the surface of shell fragment towards the touch pad, so that the vibration range of touch pad is great, has improved vibration intensity.

In one embodiment, the support structure comprises at least one support block, and a projection of the support block on the spring plate along a direction perpendicular to the first surface is located in an edge area of the free end.

The touch control feedback module is positioned at the free end or the edge area of the piezoelectric motor by limiting the supporting block, so that the vibration amplitude of the touch panel is large, and the vibration intensity is improved.

In one embodiment, a plurality of the support structures form a symmetrical structure about a center line perpendicular to the first surface.

According to the touch feedback module, the plurality of supporting structures form a symmetrical structure around the center line perpendicular to the first surface, so that the whole structure is symmetrical, and the consistency of pressure sensing and the uniformity of touch feedback are further improved.

In one embodiment, the touch feedback module further includes two elastic blocks, two ends of the two elastic blocks are respectively fixed to edge areas of opposite surfaces of the elastic plate and the touch pad, and the two elastic blocks are symmetrically arranged on two sides of the first surface.

Above-mentioned touch-control feedback module is through setting up two elastic blocks to further connect touch pad and elastic plate, improve touch-control feedback module's reliability.

A touch device includes the touch feedback module according to any of the above embodiments.

Above-mentioned touch device, because the number of shell fragment structure that shell fragment, piezoelectric motor and bearing structure constitute in the touch feedback module is a plurality of, press the different positions of touch pad, all correspond shell fragment structure, piezoelectric motor can output voltage signal, and voltage signal fluctuation is less, make pressure perception uniformity higher, and a plurality of shell fragment structures promote the touch pad vibration simultaneously, make the touch pad can produce along the ascending even displacement in the direction of perpendicular to first surface, improve the homogeneity of touch feedback, therefore, the pressure perception uniformity and the touch feedback uniformity of the touch device who has this touch feedback module are better.

Drawings

Fig. 1 is a schematic structural diagram of a touch feedback module according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a touch feedback module according to another embodiment of the present invention;

fig. 3 is an exploded schematic view of a touch feedback module according to yet another embodiment of the present invention;

fig. 4 is an exploded view of a touch feedback module according to another embodiment of the present invention;

fig. 5 is a schematic view of a projection of the touch feedback module on the first surface after the touch pad is removed according to an embodiment of the present invention;

fig. 6 is a schematic view of a projection of a touch feedback module on a first surface after removing a touch pad according to another embodiment of the present invention;

fig. 7 is a schematic view of a projection of a touch feedback module on a first surface after removing a touch pad according to another embodiment of the present invention;

fig. 8 is a schematic view of a projection of the touch feedback module on the first surface after removing the touch pad according to another embodiment of the present invention;

fig. 9 is a schematic diagram of vibration of the touch feedback module according to an embodiment of the present invention;

fig. 10 is a schematic diagram of vibration of a touch feedback module according to another embodiment of the present invention;

fig. 11 is a schematic diagram of vibration of a touch feedback module according to still another embodiment of the present invention;

fig. 12 is a schematic diagram of vibration of a touch feedback module according to another embodiment of the present invention;

fig. 13 is a schematic structural diagram of an elastic plate in a touch feedback module according to an embodiment of the present invention;

fig. 14 is a schematic structural diagram of an elastic plate in a touch feedback module according to another embodiment of the present invention.

Reference numerals:

100. touch feedback module 110, elastic plate 111 and first surface

112. Through groove 113, elastic sheet 114 and first through groove

115. First recess 116, second recess 117, second surface

118. Third surface 119, fourth surface 120, fifth surface

121. Second through groove 122, third groove 123 and fourth groove

124. Fifth groove 130, piezoelectric motor 140, support structure

150. Touch pad 160, spring sheet structure 170 and elastic block

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" 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.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 and fig. 2, the embodiment of the present invention provides a touch feedback module 100, in which the touch feedback module 100 is fixed in a host casing through a supporting plate, at this time, the supporting plate provides a vibration fulcrum for the touch feedback module 100, or directly fixed in the host casing, and at this time, the host casing provides a vibration fulcrum for the touch feedback module 100. The touch feedback module 100 includes an elastic plate 110, a plurality of piezoelectric motors 130, and a plurality of supporting structures 140, the touch feedback module 100 is used in cooperation with the touch pad 120, the touch pad 120 is erected on one side of the supporting structures 140 far away from the elastic plate 110, wherein:

referring to fig. 3 and 4 together, the elastic plate 110 has a first surface 111 close to the touch pad 150 and a first central line X perpendicular to the first surface 111, and the elastic plate 110 is provided with a plurality of through slots 112, each through slot 112 penetrates through the elastic plate 110 in a direction perpendicular to the first surface 111, the plurality of through slots 112 divide the elastic plate 110 into a plate body and a plurality of elastic pieces 113, one end of each elastic piece 113 is fixedly connected with the plate body to form an integrated structure, and the other end is separated from the plate body through the through slot 112 opposite to the elastic piece to form a free end, and the free end can freely vibrate in a direction parallel to the first central line X; in a specific configuration, the elastic plate 110 may be a metal plate with good elasticity, such as a stainless steel plate or an aluminum alloy plate, and the elastic plate 110 may also be a plastic plate, such as an acrylic plate or an ABS (acrylonitrile butadiene styrene) plastic plate, so that the elastic sheet has a fast response, a large vibration displacement, and a high mechanical strength;

referring to fig. 5, 6, 7 and 8 together, at least a portion of each of the piezoelectric motors 130 is disposed on the elastic sheet 113, and a projection profile of each of the piezoelectric motors 130 on the elastic plate 110 falls within a profile of the through slot 112, so that the piezoelectric motors 130 can pass through the through slot 112 to vibrate up and down, each of the piezoelectric motors 130 corresponds to at least one of the elastic sheets 113, and each of the elastic sheets 113 corresponds to one of the piezoelectric motors 130, so that the piezoelectric motor 130 can drive at least one of the elastic sheets 113 to move, and one of the elastic sheets 113 only moves together with one of the piezoelectric motors 130, thereby ensuring the precision and reliability of the movement; when specifically arranged, the piezoelectric motor 130 includes a piezoelectric element and an internal driving circuit, the piezoelectric element is a core part, and may be made of an organic piezoelectric material, an inorganic ceramic piezoelectric material, a single crystal piezoelectric material, a lead-free piezoelectric material, or the like, the piezoelectric element may be fixed on the elastic sheet 113 by gluing, a mechanical connection, or the like, and a preferable connection manner may be a double-sided adhesive connection, a snap connection, a concave-convex fit connection, or a threaded connection;

with continued reference to fig. 1 and fig. 2, the plurality of supporting structures 140 are disposed on one side of the elastic sheet 113 close to the touch pad 150, and in each of the supporting structures 140, the elastic sheet 113 and the through slot 112 which are disposed oppositely, a projection profile of the supporting structure 140 on the elastic plate 110 along the direction of the first center line X falls into a profile of the through slot 112, so that the supporting structures 140 can pass through the through slot 112 to vibrate up and down, and the supporting structures 140 correspond to the elastic sheets 113 one by one, so that the supporting structures 140 transmit force to the elastic sheets 113, or the elastic sheets 113 drive the supporting structures 140 to vibrate up and down; in a specific arrangement, the supporting structure 140 is mainly used for transmitting force and supporting the touch panel 150, and may be made of a material with elasticity, such as foam, rubber, and plastic, for example, the supporting structure 140 may be made of an EVA porous plate (ethylene-vinyl acetate copolymer) with a hardness of 30A-50A;

with continued reference to fig. 1 and 2, the touch pad 150 is mounted on a side of the supporting structure 140 away from the spring 113; in a specific arrangement, the touch pad 150 may have a rectangular parallelepiped shape, a cylindrical shape, a square shape, or the like. The touch pad 150 may be of conventional dimensions, with other mating components, such as the support structure 140, the spring 113, etc., being adaptively adjusted.

In the touch feedback module 100, the plurality of through grooves 112 penetrating through the elastic plate 110 in the direction perpendicular to the first surface 111 form the plurality of elastic pieces 113 on the elastic plate 110, each elastic piece 113 can vibrate up and down in the direction perpendicular to the first surface 111 and can vibrate together with the piezoelectric motor 130 located thereon, when an external force presses the touch pad 150, the force is transmitted to the piezoelectric motor 130 through the supporting structure 140, the piezoelectric motor 130 and the elastic pieces 113 deform together by bending and generate voltage output through a positive piezoelectric effect to sense pressure, and the piezoelectric motor 130 receives a voltage signal at the time, the bending deformation is generated by the action of the force generated by the inverse piezoelectric effect, the elastic pieces 113 are driven to deform by bending, and the supporting structure 140 vibrates along with the bending deformation, so that the vibration is transmitted to the touch pad 150. Because the number of the elastic sheet structures 160 formed by the elastic sheet 113, the piezoelectric motor 130 and the supporting structure 140 is multiple, different positions of the touch pad 150 are pressed and correspond to the elastic sheet structures 160, the piezoelectric motor 130 can output voltage signals, the voltage signals have small fluctuation, the consistency of pressure sensing is high, and the multiple elastic sheet structures 160 simultaneously push the touch pad 150 to vibrate, so that the touch pad 150 can generate uniform displacement in the direction perpendicular to the first surface 111, and the uniformity of touch feedback is improved. And receive the different voltage signal of change along with time at piezoelectric motor 130, produce bending deformation through the effect of reverse piezoelectric effect production power, drive shell fragment 113 and take place bending deformation, and the crooked degree of shell fragment 113 also changes along with time to make touch pad 150 produce the up-and-down motion of change along with time, alright in order to realize 150 different up-and-down motion modes like this, produce different press touch-control feedback promptly, improve user experience.

On the basis of the touch feedback module 100, there are two ways of disposing the piezoelectric motor 130 on the elastic sheet 113, as follows:

first, as shown in fig. 3, 5 and 6, each piezoelectric motor 130 is correspondingly disposed on one spring plate 113, the piezoelectric motors 130 correspond to the spring plates 113 one by one, at this time, referring to fig. 9 and 10 together, the piezoelectric motor 130, the supporting structure 140 and the spring plates 113 form a spring plate structure 160, the elastic plate 110 has a plurality of spring plate structures 160, when an external force F presses the touch pad 150 in each spring plate structure 160, the supporting structure 140 transmits the force to the piezoelectric motor 130 to drive the piezoelectric motor 130 and the spring plates 113 to bend and deform together to sense the pressure, and at this time, the piezoelectric motor 130 receives a voltage signal to generate bending deformation to drive the spring plates 113 to generate bending deformation, so as to transmit the vibration to the touch pad 150 through the supporting structure 140, the elastic plate 110 has the spring plate structures 160 capable of driving the spring plates 150 to move at multiple points, so that the touch pad 150 can generate uniform displacement in a direction perpendicular to the first surface, the uniformity of touch feedback is improved, the elastic sheet structures 160 are corresponding to a plurality of positions of the touch pad 150, and the piezoelectric motor 130 can output voltage signals, so that the consistency of pressure sensing is high;

in the second mode, each piezoelectric motor 130 is correspondingly disposed on at least two spring plates 113, at this time, the piezoelectric motor 130, at least two spring plates 113 correspondingly disposed, and at least two supporting structures 140 corresponding to the at least two spring plates 113 one by one form a spring plate structure 160, at this time, the spring plate structure 160 is a suspended wing structure, as shown in fig. 4, 7 and 8, each piezoelectric motor 130 is correspondingly disposed on two spring plates 113, one spring plate 113 corresponds to one piezoelectric motor 130, at this time, referring to fig. 11 and 12 together, the piezoelectric motor 130, the two supporting structures 140, and the two spring plates 113 form a spring plate structure 160, the spring plate structure 160 is a double suspended wing structure, at this time, the elastic vibration effect of the spring plate structure 160 is better, so as to improve the overall touch feedback effect, the elastic plate 110 has a plurality of spring plate structures 160, when each spring plate structure 160 presses the touch pad by an external force F, two bearing structure 140 transmit the effect of power to piezoelectric motor 130, drive piezoelectric motor 130 and two shell fragment 113 together bending deformation with perception pressure, and piezoelectric motor 130 received voltage signal this moment and produced bending deformation, it takes place bending deformation to drive two shell fragments 113, thereby transmit vibration for touch pad 150 through two bearing structure 140 respectively, elastic plate 110 is last to have a plurality of shell fragments 113 and to make shell fragment structure 160 drive touch pad 150 multiple spot motion, thereby make touch pad 150 can produce the even displacement along the direction of perpendicular to first surface 111, improve touch feedback's homogeneity, and make a plurality of positions of touch pad 150 all correspond there is shell fragment structure 160, piezoelectric motor 130 can output voltage signal, make pressure perception uniformity higher.

In the touch feedback module 100, the piezoelectric motors 130 correspond to the elastic sheets 113 one by one, or one piezoelectric motor 130 corresponds to a plurality of elastic sheets 113, so that the number of elastic sheet structures 160 formed by the elastic sheets 113, the piezoelectric motors 130 and the support structure 140 is large, and the consistency of pressure sensing and the uniformity of touch feedback can be improved; moreover, one piezoelectric motor 130 corresponds to a plurality of elastic sheets 113, so that the touch feedback module 100 has fewer parts, is convenient to process and manufacture, and improves the compactness of the whole structure. In a specific configuration, the piezoelectric motors 130 may correspond to the spring plates 113 one by one, the shape of the piezoelectric motor 130 is consistent with the shape of the spring plate 113, and one piezoelectric motor 130 may also correspond to a plurality of spring plates 113, at this time, the shape of the piezoelectric motor 130 is consistent with the shape formed by the plurality of elastic plates 113, for example, the piezoelectric motor 130 may have a rectangular structure, a cross-shaped structure, or the like.

The through groove 112 has a plurality of structural forms, and in a preferred embodiment, as shown in fig. 13, the through groove 112 includes a first through groove 114, a cross section of the first through groove 114 parallel to the first surface 111 is two U-shaped openings oppositely arranged, the first through groove 114 includes a first groove 115 and a second groove 116, the first groove 115 and the second groove 116 are spaced apart and oppositely arranged, the first groove 115 and the second groove 116 are U-shaped grooves respectively penetrating the elastic plate 110 in a direction perpendicular to the first surface 111, and the two U-shaped grooves extend from an inner portion of the elastic plate 110 to an edge of the elastic plate 110 toward the same side, a portion of the elastic plate 110 located between the first groove 115 and the second groove 116 forms a spring piece 113, an end face of a free end of the spring piece 113 coincides with a side face of the elastic plate 110 intersecting the first surface 111, and the side face intersecting the first surface 111 may be a second surface 117, a second surface 116, a third surface, a, The third surface 118 opposite to the second surface 117 may also be a fourth surface 119 and a fifth surface 120 which are oppositely arranged, and the first groove 115 and the second groove 116 in the same first through slot 114 extend to the same surface, such as to the second surface 117, the third surface 118, the fourth surface 119 or the fifth surface 120.

In the touch feedback module 100, the first groove 115 and the second groove 116 are U-shaped grooves that penetrate through the elastic plate 110 in a direction perpendicular to the first surface 111, and the two U-shaped grooves are limited to extend from the inside of the elastic plate 110 to the edge of the elastic plate 110 toward the same side, so that the elastic sheet 113 can be conveniently and quickly formed by cutting, injection molding and the like, and at this time, the elastic sheet 113 is a part of the elastic plate 110 between the first groove 115 and the second groove 116. In a specific arrangement, the cross section of the first through groove 114 parallel to the first surface 111 may be two U-shaped openings that are oppositely arranged, but is not limited to this, and may also be an opening with another shape, for example, a V-shaped opening, at this time, the shape of the cross section of the elastic piece 113 parallel to the first surface 111 is a trapezoidal structure, for example, an arc-shaped opening, at this time, the shape of the cross section of the elastic piece 113 parallel to the first surface 111 is an arc-shaped structure, for example, an irregular opening shape is also possible, at this time, the area of the free end of the elastic piece 113 is larger, so as to facilitate the arrangement of other structural members on the elastic piece 113; the number of the first through slots 114 may be one, and the number of the first through slots 114 may also be multiple, at this time, the opening positions of the plurality of first through slots 114 may be the same, for example, the first through slots 114 are opened on the first surface 111 and the second surface 117, or the first through slots 114 are opened on the first surface 111 and the third surface 118, or the first through slots 114 are opened on the first surface 111 and the fourth surface 119, or the first through slots 114 are opened on the first surface 111 and the fifth surface 120, of course, the opening positions of the plurality of first through slots 114 may also be different, and only a part of the first through slots 114 are opened at the same position, for example, three first through slots 114 are opened on the first surface 111 and the second surface 117.

On the basis of the touch feedback module 100, in order to further improve the consistency of pressure sensing and the uniformity of touch feedback, as shown in fig. 1, fig. 2 and fig. 13, specifically, the number of the first through grooves 114 is multiple, and the multiple first through grooves 114 form a symmetrical structure about the first center line X.

The touch feedback module 100 defines the plurality of first through grooves 114 to form a symmetrical structure about the first center line X, so that the plurality of elastic sheets 113 are symmetrical about the first center line X, and further the overall structure is symmetrical on the basis of ensuring the plurality of elastic sheet structures 160, thereby further improving the consistency of pressure sensing and the uniformity of touch feedback. In a specific arrangement, the symmetrical structure comprises rotational symmetry and central symmetry. The rotational symmetry refers to that the structure is still overlapped with the original structure after rotating a certain angle relative to the center line, for example, the elastic plate 110 is a cube structure, the four first through grooves 114 are respectively opened on the first surface 111 and the second surface 117, the first surface 111 and the third surface 118, the first surface 111 and the fourth surface 119, and the first surface 111 and the fifth surface 120, and the elastic plate 110 is overlapped with the elastic plate 110 before rotating after rotating 90 degrees relative to the first center line X; the central symmetry is a special case of rotational symmetry, and the rotation angle is limited to 180 degrees, that is, the central symmetry means that the structure is still overlapped with the original structure after being rotated 180 degrees with respect to the center, for example, as shown in fig. 13, the elastic plate 110 is a rectangular parallelepiped structure, three first through grooves 114 are respectively opened on the first surface 111 and the second surface 117, the other three first through grooves 114 are respectively opened on the first surface 111 and the third surface 118, and the elastic plate 110 is overlapped with the elastic plate 110 before being rotated after being rotated 180 degrees with respect to the first center line X.

The through groove 112 has various structural forms, as shown in fig. 14, in a preferred embodiment, the through groove 112 includes a second through groove 121, a cross section of the second through groove 121 parallel to the first surface 111 is an oppositely disposed annular opening, the second through groove 121 includes a third groove 122, a fourth groove 123 and a fifth groove 124 communicating the third groove 122 and the fourth groove 123, the third groove 122, the fourth groove 123 and the fifth groove 124 are respectively located inside the elastic plate 110 and penetrate the elastic plate 110 in a direction perpendicular to the first surface 111, the third groove 122 and the fourth groove 123 are oppositely disposed and located on the same side of the fifth groove 124, and a portion of the elastic plate 110 located between the third groove 122 and the fourth groove 123 forms the elastic sheet 113.

In the touch feedback module 100, the third groove 122, the fourth groove 123 and the fifth groove 124 are arranged, and the third groove 122 and the fourth groove are defined to be oppositely arranged and located on the same side of the fifth groove 124, so that the elastic sheet 113 is formed inside the elastic sheet 110 by cutting, injection molding and the like, and at this time, the elastic sheet 113 is a part of the elastic sheet 110 between the third groove 122 and the fourth groove 123. When the elastic sheet 113 is arranged in a specific manner, the cross section of the second through groove 121 parallel to the first surface 111 may be an annular opening, the annular opening may be U-shaped, at this time, the elastic sheet 113 has a rectangular parallelepiped structure, the annular opening may also be a fan-shaped, at this time, the elastic sheet 113 has a fan-shaped plate structure, and the annular opening may also have an irregular shape, for example, in order to facilitate the arrangement of other structural members on the elastic sheet 113, one end of the third groove 122 and one end of the fourth groove 123 far away from the fifth groove 124 are inclined in a direction toward the center of the fifth groove 124, so that the end area of the elastic sheet 113 is larger; the number of the first through slots 114 may be one, and the number of the first through slots 114 may also be multiple.

On the basis of the touch feedback module 100, in order to further improve the consistency of pressure sensing and the uniformity of touch feedback, as shown in fig. 1, fig. 2 and fig. 14, specifically, the number of the second through grooves 121 is multiple, and the multiple second through grooves 121 form a symmetrical structure about the first center line X.

The touch feedback module 100 forms a symmetrical structure about the first center line X by defining the plurality of second through grooves 121, so that the plurality of elastic sheets 113 form a symmetrical structure about the first center line X, and further the overall structure is symmetrical on the basis of ensuring the plurality of elastic sheet structures 160, thereby further improving the consistency of pressure sensing and the uniformity of touch feedback. In a specific arrangement, the symmetrical structure comprises rotational symmetry and central symmetry. The rotational symmetry means that the structure is still overlapped with the original structure after rotating a certain angle relative to the center line, for example, the elastic plate 110 is a cube structure and has four second through grooves 121, and the elastic plate 110 is overlapped with the elastic plate 110 before rotating after rotating 90 degrees relative to the first center line X; the central symmetry is a special case of rotational symmetry, and the rotation angle is limited to 180 degrees, that is, the central symmetry means that the structure is rotated 180 degrees with respect to the center and then still coincides with the original structure, for example, as shown in fig. 14, the elastic plate 110 is a rectangular parallelepiped structure and has six second through grooves 121, and the elastic plate 110 is rotated 180 degrees with respect to the first center line X and then coincides with the elastic plate 110 before the rotation; of course, the elastic plate 110 may further include at least one first through groove 114 and at least one second through groove 121, and at this time, the plurality of first through grooves 114 and the plurality of second through grooves 121 may form a symmetrical structure about the first center line X.

The structure of the spring structure 160 has various forms, as shown in fig. 1, 3-9 and 11, in a preferred embodiment, the piezoelectric motor 130 is disposed on the surface of the spring 113 facing the touch pad 150, the support structure 140 is disposed between the piezoelectric motor 130 and the touch pad 150, one end of two ends of the support structure 140 extending along the first center line X direction is fixedly connected to the surface of the piezoelectric motor 130 facing the touch pad 150, and the other end is fixedly connected to the surface of the touch pad 150 facing the piezoelectric motor 130.

In the touch feedback module 100, the piezoelectric motor 130 and the support structure 140 are stacked on the surface of the elastic sheet 113 facing the touch pad 150, so that the support structure 140 with a smaller thickness can realize the same vibration amplitude of the touch pad 150, thereby saving materials and making the whole structure more compact. When specifically setting up, bearing structure 140 can be elastic material, through the deposit, injection moulding, the double faced adhesive tape is connected, the buckle is connected, modes such as unsmooth cooperation connection or threaded connection fix on the surface that piezoelectric motor 130 and touch pad 150 are relative, of course bearing structure 140 can also be elastic material, this moment, carry out elastic connection through the elastic adhesive respectively between bearing structure 140 and piezoelectric motor 130 and the surface that touch pad 150 is relative, this elastic adhesive can be the double faced adhesive tape, optical cement etc. in order to eliminate the influence that piezoelectric motor 130 warp and bring, guarantee the stability and the reliability of structure.

The structure of the spring structure 160 has a plurality of forms, and in a preferred embodiment, the piezoelectric motor 130 is disposed on a surface of the spring 113 facing the touch pad 150, the support structure 140 is disposed between the spring 113 and the touch pad 150, one end of two ends of the support structure 140 extending along the first center line X direction is fixedly connected to the surface of the spring 113 facing the touch pad 150, the other end is fixedly connected to the surface of the touch pad 150 facing the spring 113, and the support structure 140 is located on a side of the piezoelectric motor 130 facing a free end of the spring 113.

In the touch feedback module 100, the piezoelectric motor 130 and the support structure 140 are disposed on the same layer on the surface of the elastic sheet 113 facing the touch pad 150, so that the support structure 140 with a smaller area can realize the same vibration amplitude of the touch pad 150, and the overall structure is more compact. When specifically setting up, bearing structure 140 can be elastic material, through the deposit, injection moulding, the double faced adhesive tape is connected, the buckle is connected, modes such as unsmooth cooperation connection or threaded connection fix on the surface that shell fragment 113 and touch pad 150 are relative, of course bearing structure 140 can also be elastic material, at this moment, carry out elastic connection through the elastic adhesive between bearing structure 140 and the surface that shell fragment 113 and touch pad 150 are relative respectively, this elastic adhesive can be the double faced adhesive tape, optical cement etc. in order to eliminate the influence that shell fragment 113 warp and bring, guarantee the stability and the reliability of structure.

As shown in fig. 2, 10 and 12, in a preferred embodiment, the piezoelectric motor 130 is disposed on a surface of the dome 113 away from the touch pad 150, the support structure 140 is disposed between the dome 113 and the touch pad 150, one end of two ends of the support structure 140 extending along the first center line X direction is fixedly connected to the surface of the dome 113 facing the touch pad 150, and the other end is fixedly connected to the surface of the touch pad 150 facing the dome 113.

The touch feedback module 100, the piezoelectric motor 130 and the supporting structure 140 are disposed on two sides of the elastic sheet 113, and the supporting structure 140 is disposed on the surface of the elastic sheet 113 facing the touch pad 150, so that the vibration amplitude of the touch pad 150 is large, and the vibration strength is improved. When specifically setting up, bearing structure 140 can be elastic material, through the deposit, injection moulding, the double faced adhesive tape is connected, the buckle is connected, modes such as unsmooth cooperation connection or threaded connection fix on the surface of shell fragment 113 towards touch pad 150, of course bearing structure 140 can also be rigid material, at this moment, carry out elastic connection through the elastic adhesive respectively between bearing structure 140 and the relative surface of shell fragment 113 and touch pad 150, this elastic adhesive can be the double faced adhesive tape, optical cement etc. in order to eliminate the influence that shell fragment 113 warp and bring, guarantee the stability and the reliability of structure.

The support structure 140 has various structural forms, and specifically, the support structure 140 includes at least one support block, and a projection of each support block on the spring 113 along the direction of the first centerline X may be located in an edge area of the free end of the spring 113.

In the touch feedback module 100, the projection of the first center line X of the supporting block on the elastic sheet 113 is limited to be located at the edge area of the free end of the elastic sheet 113, that is, the supporting block is disposed at the edge area of the free end of the elastic sheet 113, or the piezoelectric motor 130 and the supporting block are stacked at the edge area of the free end of the elastic sheet 113, so that the vibration amplitude of the touch pad 150 is large, and the vibration strength is improved. When the touch pad is specifically arranged, the number of the supporting blocks can be one or multiple, and the supporting blocks can be uniformly distributed in the edge area of the end part of the elastic sheet 113, so that the supporting block with a smaller size can ensure that the touch pad 150 has the same vibration amplitude, further, the material is saved, and the production cost is saved.

On the basis of the touch feedback module 100, in order to further improve the consistency of pressure sensing and the uniformity of touch feedback, more specifically, the plurality of support structures 140 form a symmetrical structure about a center line perpendicular to the first surface 111.

The touch feedback module 100 defines the plurality of support structures 140 to form a symmetrical structure about the first center line X, so that the overall structure is symmetrical, and the consistency of pressure sensing and the uniformity of touch feedback are further improved. In a specific arrangement, the symmetrical structure comprises rotational symmetry and central symmetry. The rotational symmetry means that the structure is still overlapped with the original structure after rotating a certain angle relative to the center line, for example, the supporting structure 140 includes a supporting block, the elastic plate 110 is a cube structure and has four second through grooves 121, each supporting structure 140 is disposed at the center of the edge area of the end of the elastic sheet 113, and the elastic plate 110 is overlapped with the elastic plate 110 before rotating after rotating 90 degrees relative to the first center line X; the central symmetry is a special case of rotational symmetry, and the rotational angle is limited to 180 degrees, that is, the central symmetry means that the structure is rotated 180 degrees with respect to the center and still coincides with the original structure, for example, as shown in fig. 14, the elastic plate 110 is a rectangular parallelepiped structure having six second through grooves 121, each support structure 140 is disposed at the center of the edge area of the end of the elastic plate 113, and the elastic plate 110 is rotated 180 degrees with respect to the first center line X and then coincides with the elastic plate 110 before the rotation.

In order to improve the reliability of the touch feedback module 100, as shown in fig. 1 to 12, in a preferred embodiment, the touch feedback module 100 further includes two elastic blocks 170, two ends of the two elastic blocks 170 are respectively fixed to edge regions of opposite surfaces of the elastic plate 110 and the touch pad 150, and the two elastic blocks 170 are symmetrically disposed at two sides of the first surface 111. When the touch panel 140 is pressed by the external force F, the elastic block 170 is elastically deformed, and the piezoelectric motor 120 and the touch panel 140 can be relatively freely vibrated up and down as a whole.

In the touch feedback module 100, the two elastic blocks 170 are disposed at the edge areas of the opposite surfaces of the elastic plate 110 and the touch plate 150 to further connect the touch plate 150 and the elastic plate 110, and the two elastic blocks 170 are limited to be symmetrically disposed at two sides of the first surface 111, so that the reliability of the touch feedback module 100 is improved. In a specific configuration, the elastic block 170 may be a strip-shaped structure, may also be a plurality of uniformly arranged columnar elastic blocks 170, may also be an annular elastic body that surrounds the elastic plate 110, and of course, may also be in other structural forms.

The embodiment of the utility model also provides a touch device, including the touch feedback module 100 of any above embodiment. 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 100 is an input touch feedback module 100 of the notebook computer, which is also referred to as a PC touch feedback module 100.

In the touch device, since the number of the elastic sheet structures 160 formed by the elastic sheets 113, the piezoelectric motor 130 and the supporting structure 140 in the touch feedback module 100 is plural, different positions of the touch pad 150 are pressed and correspond to the elastic sheet structures 160, the piezoelectric motor 130 can output voltage signals, and the voltage signals have small fluctuation, so that the pressure sensing consistency is high, and the plurality of elastic sheet structures 160 simultaneously push the touch pad 150 to vibrate, so that the touch pad 150 can generate uniform displacement in a direction perpendicular to the first surface 111, and the uniformity of touch feedback is improved, therefore, the pressure sensing consistency and the touch feedback uniformity of the touch device with the touch feedback module 100 are good.

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 represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a touch-control feedback module, its characterized in that includes elastic plate, a plurality of piezoelectric motor and a plurality of bearing structure, wherein:

each piezoelectric motor is at least partially arranged on the elastic sheet, the projection contour of the piezoelectric motor on the elastic plate along the direction vertical to the first surface falls into the contour corresponding to the through groove, each piezoelectric motor corresponds to at least one elastic sheet, and each elastic sheet corresponds to one piezoelectric motor;

2. The touch feedback module according to claim 1, wherein each of the piezoelectric motors is disposed on one of the resilient sheets, or each of the piezoelectric motors is disposed on at least two of the resilient sheets.

3. The touch feedback module according to claim 2, wherein the through grooves include a first through groove, a cross section of the first through groove parallel to the first surface is two U-shaped openings disposed opposite to each other, the first through groove includes a first groove and a second groove disposed at an interval and opposite to each other, the first groove and the second groove are U-shaped grooves respectively penetrating through the elastic plate in a direction perpendicular to the first surface, the two U-shaped grooves extend from an inside of the elastic plate to an edge of the elastic plate toward a same side, a portion of the elastic plate located between the first groove and the second groove forms the elastic piece, and an end surface of the free end coincides with a side surface of the elastic plate intersecting with the first surface.

4. The touch feedback module according to claim 3, wherein the number of the first through grooves is plural, and the plural first through grooves form a symmetrical structure with respect to a center line perpendicular to the first surface.

5. The touch feedback module according to any one of claims 1 to 4, wherein the through grooves include a second through groove, a cross section of the second through groove parallel to the first surface is an annular opening disposed oppositely, the second through groove includes a third groove, a fourth groove and a fifth groove communicating the third groove and the fourth groove, the third groove, the fourth groove and the fifth groove are respectively located inside the elastic plate and penetrate through the elastic plate along a direction perpendicular to the first surface, the third groove and the fourth groove are disposed oppositely and located on a same side of the fifth groove, and a portion of the elastic plate located between the third groove and the fourth groove forms the elastic plate.

6. The touch feedback module according to claim 5, wherein the number of the second through grooves is plural, and the plural second through grooves form a symmetrical structure with respect to a center line perpendicular to the first surface.

7. The touch feedback module according to claim 6, wherein the two spring plates, the piezoelectric motor and the two support structures form a spring plate structure with two suspension wings, the two spring plates are oppositely arranged along a direction toward two sides of the middle of the elastic plate, and the two support structures are correspondingly arranged on the two spring plates one to one.

8. The touch feedback module according to claim 5, wherein the piezoelectric motor is disposed on a surface of the elastic sheet facing the touch pad, and two ends of the supporting structure are respectively and fixedly disposed on surfaces of the piezoelectric motor and the touch pad opposite to each other.

9. The touch feedback module according to claim 5, wherein the piezoelectric motor is disposed on a surface of the elastic sheet facing the touch pad, two ends of the support structure are respectively and fixedly disposed on opposite surfaces of the elastic sheet and the touch pad, and the support structure is disposed on a side of the piezoelectric motor facing the free end.

10. The touch feedback module according to claim 5, wherein the piezoelectric motor is disposed on a surface of the elastic sheet away from the touch pad, and two ends of the supporting structure are respectively and fixedly disposed on surfaces of the elastic sheet opposite to the touch pad.

11. The touch feedback module according to claim 5, wherein the supporting structure comprises at least one supporting block, and a projection of the supporting block on the resilient piece along a direction perpendicular to the first surface is located at an edge area of the free end.

12. The touch feedback module of claim 11, wherein the plurality of support structures form a symmetrical structure about a center line perpendicular to the first surface.

13. The touch feedback module according to claim 5, further comprising two elastic blocks, wherein two ends of the two elastic blocks are respectively fixed to edge regions of opposite surfaces of the elastic plate and the touch plate, and are symmetrically disposed on two sides of the first surface.

14. A touch device comprising the touch feedback module of any one of claims 1-13.