CN112445331A

CN112445331A - Touch feedback module and touch device

Info

Publication number: CN112445331A
Application number: CN201911175848.7A
Authority: CN
Inventors: 许春东
Original assignee: Nanchang OFilm Biometric Identification Technology Co Ltd
Current assignee: Nanchang OFilm Biometric Identification Technology Co Ltd
Priority date: 2019-08-28
Filing date: 2019-11-26
Publication date: 2021-03-05
Also published as: CN112445329A; CN210776588U; WO2021036052A1; WO2021036053A1; WO2021036051A1; CN112445330A; CN210776587U; CN211236846U; WO2021036054A1; CN211375552U

Abstract

The invention relates to a touch feedback module and a touch device, wherein the touch feedback module comprises: the suspension wing plate is provided with a bearing surface and a first central line vertical to the bearing surface, and the suspension wing plate forms a symmetrical structure relative to the first central line; the piezoelectric motor is arranged on the bearing surface and forms a symmetrical structure relative to the first central line; the transmission structure is arranged on the suspended wing plate and forms a symmetrical structure about the first central line; the touch pad is erected on one side of the transfer structure, which is far away from the suspension wing plate; the touch feedback module forms a symmetrical structure about the first central line, when an external force presses the touch pad, the force is transmitted to the suspension wing plate through the transmission structure, so that the suspension wing plate is bent and deformed, the piezoelectric motor is driven to generate voltage output through a positive piezoelectric effect, and the pressure sensing consistency is high. The piezoelectric motor receives the voltage signal, and through the effect of reverse piezoelectric effect production power, the drive hangs the pterygoid lamina and takes place bending deformation, gives the touch pad with vibration transmission through the transmission structure, improves the homogeneity of touch-control feedback.

Description

Touch feedback module and touch device

The present invention claims priority of chinese patent application with application number 201910803936.0, entitled "touch feedback module and touch device" filed by the chinese office of acceptance in 28/08/2019, the contents of which are incorporated herein by reference.

Technical Field

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

Disclosure of Invention

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, comprising: the suspension wing plate is provided with a bearing surface and a first central line vertical to the bearing surface, and the suspension wing plate forms a symmetrical structure relative to the first central line; the piezoelectric motor is arranged on the bearing surface and forms a symmetrical structure relative to the first central line; the transmission structure is arranged on the suspension wing plate and forms a symmetrical structure about the first center line; and the touch pad is erected on one side of the transfer structure, which is far away from the suspension wing plate.

The technical scheme at least has the following technical effects: the touch pad erects in the suspension wing board through transmission structure, the range upon range of piezoelectric motor that is provided with on the suspension wing board, transmission structure and at least one piezoelectric motor all are symmetrical structure about first central line, when external force presses down the touch pad, transmit the power for the suspension wing board through the transmission structure, lead to the suspension wing board to take place bending deformation, and then drive piezoelectric motor and produce voltage output through positive piezoelectric effect, because the overall structure symmetry, press the different positions of touch pad, the voltage signal fluctuation range of piezoelectric motor output is less, pressure perception uniformity is higher. At the moment, the piezoelectric motor receives a voltage signal, the action of force is generated through the inverse piezoelectric effect, and then the suspension wing plate is driven to be bent and deformed, so that vibration is transmitted to the touch pad through the transmission structure, and due to the fact that the whole structure is symmetrical, the touch pad can generate uniform displacement along the stacking direction, and the uniformity of touch control feedback is improved.

In one embodiment, the suspension plate has a bearing portion and at least two suspension portions, a center line of the bearing portion coincides with the first center line, the suspension portions are connected to the bearing portion and extend toward an outer side of the bearing portion in a direction perpendicular to the first center line, and the at least two suspension portions are symmetrical with respect to the first center line.

The surface of bearing part among the above-mentioned technical scheme forms the loading surface, and the piezo-electric motor sets up on the bearing part, and transmission structure sets up on the overhang portion for the effect of transmission force, and the overhang portion connects in the bearing part, and extends along the direction of the first central line of perpendicular to, in order to set up the piezo-electric motor in transmission structure's inner space, and in order to guarantee the symmetry and the uniformity of overall structure, set up two at least overhang portions into the symmetrical structure about first central line.

In one embodiment, the transmission structure has a plurality of transmission units, the transmission units form a symmetrical structure about the first center line, and the transmission units are disposed on the suspension portion.

According to the technical scheme, the plurality of transmission single bodies are arranged to be matched with the structural form of the plurality of suspension wing parts, in order to guarantee symmetry and consistency of the whole structure, the plurality of transmission single bodies are arranged to be symmetrical structures relative to the first central line, each suspension wing part can be provided with one integral transmission single body, and the combination of the plurality of transmission single bodies can be arranged, so that the integrated transmission single body is suitable for suspension wing plates in different forms.

In one embodiment, the plurality of transfer units and the suspension plate are of an integral structure, and each transfer unit is connected with the touch plate; or, the plurality of transmission monomers and the touch pad are of an integrated structure, and each transmission monomer is connected with the suspension wing plate.

In order to avoid the skew of transmission structure and cause the position inaccuracy of touch pad among the above-mentioned technical scheme, guarantee overall structure's symmetry, a plurality of transmission monomers with hang pterygoid lamina formula structure as an organic whole, each transmission monomer is connected with the touch pad, or, a plurality of transmission monomers and touch pad formula structure as an organic whole, each transmission monomer can be connected with hanging the pterygoid lamina, or, each transmission monomer links together with touch pad, hanging pterygoid lamina three.

In one embodiment, the bearing surface comprises a surface of the bearing portion facing away from the touch pad and/or the bearing surface comprises a surface of the bearing portion facing towards the touch pad.

Above-mentioned technical scheme overhang pterygoid lamina, transmission structure and touch pad form an accommodation portion jointly, in order to practice thrift piezoelectric motor's occupation space, can set up piezoelectric motor in the surface of bearing part towards the touch pad for piezoelectric motor is located this accommodation portion. In order to avoid the touch pad from touching the piezoelectric motor in the downward vibration process, influence the amplitude of the touch pad and cause mechanical damage to the touch pad and the piezoelectric motor, the piezoelectric motor can be arranged on the surface of the bearing part departing from the touch pad. Of course, in order to meet different precision requirements, a part of the piezoelectric motors can be arranged on the surface of the bearing part facing the touch panel, and the other part of the piezoelectric motors can be arranged on the surface of the bearing part facing away from the touch panel.

In one embodiment, when the bearing surface only includes the surface of the bearing part facing the touch panel, a first support plate is arranged on one side of the bearing part facing away from the touch panel, the first support plate has an abutting part, the abutting part is connected with and abutted against the bearing part, and a center line of the abutting part coincides with the first center line.

In order to provide support for the suspended wing plate and limit the vibration amplitude of the suspended wing plate in the technical scheme, a first support plate is arranged on one side, away from the piezoelectric motor, of the suspended wing plate. In order to ensure the symmetry and consistency of the whole structure and the contact reliability of the support plate and the suspension wing plate, the abutting part of the first support plate is connected to the suspension wing plate, and the central line of the abutting part is arranged to be coincident with the first central line.

In one embodiment, the abutting portion has a first threaded hole, the suspended wing plate has a second threaded hole, and the abutting portion and the suspended wing plate are locked by screws inserted into the first threaded hole and the second threaded hole along a direction parallel to the first center line.

In order to improve the connection reliability of the suspension wing plate and the support plate in the technical scheme, the suspension wing plate and the first support plate are locked together through threaded connection, and the first support plate can be replaced when being seriously damaged.

In one embodiment, the first support plate further includes a plate connected to a side of the abutment portion and extending in a direction perpendicular to the first center line, and a gap is provided between a surface of the plate adjacent to the suspended wing plate and the suspended wing plate.

Above-mentioned technical scheme has certain vibration range in order to guarantee to hang the pterygoid lamina, reduces the restriction of first backup pad to the vibration space of hanging the pterygoid lamina, and in the position outside butt portion, the plate body has the clearance with hanging between the pterygoid lamina, and first backup pad is formed with the breach respectively in the both sides of butt portion promptly, reserves certain vibration space for hanging the pterygoid lamina.

In one embodiment, the gap between the plate body and the suspended wing plate tends to increase from the abutting portion to the edge position of the plate body in a direction perpendicular to the first center line.

Because butt portion is connected with the hanging wing board among the above-mentioned technical scheme, when hanging wing board takes place the vibration, from butt portion to the position at plate body edge, vibration amplitude is bigger and bigger, consequently, plate body and the clearance between the hanging wing board are the trend of increase, for hanging wing board provides bigger vibration space, prevent that first backup pad from hindering the vibration of hanging wing board.

In one embodiment, the edge of the plate body and the edge of the suspended wing plate are aligned in a direction parallel to the first center line, and the gap between the plate body and the suspended wing plate is in a range of 0.1mm to 0.5mm at the position of the edge of the plate body and the edge of the suspended wing plate.

The gap range between the edge of the plate body and the edge of the suspension wing plate is set in the technical scheme, the phenomenon that when the gap is too large, a finger presses the suspension wing plate to obviously move downwards is prevented, and the phenomenon that when the gap is too small, the manufacturing requirement is high, and the pressure sensing output signal is too small during pressing is also prevented.

In one embodiment, the thickness of the first support plate at the abutting part ranges from 0.8mm to 1.6 mm.

The thickness of the first supporting plate is set in the technical scheme, so that the strength and stability of the first supporting plate can be guaranteed, and the first supporting plate is enabled to be in a certain quality range.

In one embodiment, the surface of the bearing part facing the touch pad is provided with a first groove, the center line of the first groove is coincident with the first center line, the piezoelectric motor is arranged in the first groove, and the center line of the piezoelectric motor is coincident with the first center line.

Through setting up first recess among the above-mentioned technical scheme to set up piezoelectric motor in first recess, can reduce transmission structure's thickness under the same downward vibration amplitude's of assurance touch pad condition, and then can reduce touch-control feedback module's whole thickness. In order to enable the first groove to form a symmetrical structure and simplify the arrangement mode, the central line of the first groove is arranged to be superposed with the central line of the suspension wing plate, so that the symmetry and consistency of the whole structure are guaranteed.

In one embodiment, at least one supporting column is arranged on one side of the bearing part, which is away from the touch pad, the at least one supporting column forms a symmetrical structure with respect to the first center line, and each supporting column is abutted against the surface of the bearing part, which is away from the touch pad, and is locked to the bearing part.

According to the technical scheme, the supporting columns can provide support for the suspended wing plate and limit the vibration amplitude of the suspended wing plate, the symmetry and consistency of the whole structure are guaranteed, and at least one supporting column is arranged to be in a symmetrical structure relative to the first center line.

In one embodiment, the surface of the bearing part facing away from the touch pad is provided with at least one bulge, and the at least one bulge forms a symmetrical structure relative to the first center line.

One side that the suspended wing board deviates from piezoelectric motor among the above-mentioned technical scheme has the bulge, and the bulge can be installed the suspended wing board to other members, also can restrict the vibration range of suspended wing board. While ensuring symmetry and consistency of the overall construction, the at least one projection is arranged in a symmetrical configuration about the first centerline.

In one embodiment, a side of the pendant plate facing away from the touch pad is provided with at least one buffer structure, the at least one buffer structure forming a symmetrical structure about the first centerline.

Buffer structure sets up in above-mentioned technical scheme one side that deviates from the touch pad at the fender that hangs, can hinder when pressing and hang the fender and warp downwards, reduces the range that hangs the fender vibration downwards, avoids causing the touch pad obvious sense that moves down to appear, improves user experience. While ensuring symmetry and consistency of the overall construction, at least one of the cushioning structures is arranged as a symmetrical structure about the first centerline.

In one embodiment, when the bearing surface comprises a surface of the bearing part deviating from the touch pad, a second supporting plate is arranged on one side of the bearing part deviating from the touch pad, the second supporting plate is connected to the suspension wing part through an elastic structure, and the elastic structure forms a symmetrical structure about the first center line.

According to the technical scheme, the suspension wing plate and the second supporting plate are connected through the elastic structure, so that the second supporting plate supports the suspension wing plate, the gap is formed between the suspension wing plate and the second supporting plate due to the existence of the elastic structure, the gap is a vibration space of the suspension wing plate, the suspension wing plate is guaranteed to have a certain vibration amplitude, the elastic structure can avoid the touch pad from obviously moving downwards, and user experience is improved. While ensuring symmetry and consistency of the overall construction, the resilient structure is arranged as a symmetrical structure about the first centre line.

In one embodiment, a second groove is formed in the surface, facing the bearing surface, of the second supporting plate, the center line of the second groove is overlapped with the first center line, the piezoelectric motor is accommodated in the second groove, and the center line of the piezoelectric motor is overlapped with the first center line.

Through setting up the second recess among the above-mentioned technical scheme for the holding piezoelectric motor can reduce elastic construction's thickness under the same downward vibration amplitude's of assurance touch pad condition, and then can reduce touch-control feedback module's whole thickness. In order to enable the second groove to form a symmetrical structure and simplify the arrangement mode, the central line of the second groove is arranged to be superposed with the central line of the suspension wing plate, so that the symmetry and consistency of the whole structure are guaranteed.

In one embodiment, a surface of the bearing part, which faces away from the touch pad, is provided with a third groove, a center line of the third groove coincides with the first center line, the piezoelectric motor is arranged in the third groove, and the center line of the piezoelectric motor coincides with the first center line, so as to reduce the size of the touch feedback module.

Through setting up the third recess among the above-mentioned technical scheme to set up piezoelectric motor in the third recess, can further reduce elastic construction's thickness under the same downward vibration amplitude's of assurance touch pad condition, and then can further reduce touch-control feedback module's whole thickness. In order to enable the third groove to form a symmetrical structure and simplify the arrangement mode, the central line of the third groove is arranged to be superposed with the central line of the suspension wing plate, so that the symmetry and consistency of the whole structure are guaranteed.

In one embodiment, at least one limiting structure is arranged on one side, close to the touch pad, of the suspension wing plate, and the limiting structure is arranged at a distance from the touch pad.

In order to limit the vibration amplitude of the touch pad relative to the suspension wing plate in the technical scheme, a limiting structure is arranged on one side, close to the touch pad, of the suspension wing plate, so that the vibration amplitude of the touch pad is limited by the limiting structure. The spacing structure and the touch pad are spaced at a certain distance, so that the touch pad can avoid mechanical damage caused by touching the spacing structure in the downward vibration process, and the downward vibration amplitude of the touch pad is increased.

In one embodiment, the at least one limiting structure forms a symmetrical structure about the first center line.

In order to guarantee the symmetry of the whole structure in the technical scheme, the touch pad can be uniformly limited by the limiting structure, and the limiting structure is arranged to be symmetrical about the first central line.

In one embodiment, when the bearing surface comprises a surface of the bearing part facing the touch plate, at least one limiting structure is arranged on one side of the piezoelectric motor facing the touch plate.

According to the technical scheme, the limiting structure is arranged on one side, facing the touch pad, of the piezoelectric motor to isolate the piezoelectric motor from the touch pad, so that the touch pad is prevented from being directly collided with the piezoelectric motor to generate mechanical damage, and the service lives of the touch pad and the piezoelectric motor are prolonged.

In one embodiment, the piezoelectric actuator further comprises a driving circuit board electrically connected to the piezoelectric motor for providing a voltage signal to the piezoelectric motor and transmitting the voltage signal.

The driving circuit board in the technical scheme is used for providing voltage signals for the piezoelectric motor and transmitting the voltage signals so as to realize normal operation of inverse piezoelectric effect and positive piezoelectric effect.

In one embodiment, the driving circuit board is disposed on the suspension plate and forms a symmetrical structure about the first center line.

In order to ensure the symmetry of the whole structure in the technical scheme, the suspension wing plate can uniformly receive the acting force of the driving circuit board on the suspension wing plate, and the driving circuit board is arranged to be of a symmetrical structure relative to the first central line.

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

The technical scheme at least has the following technical effects: the touch pad erects in the suspension wing board through transmission structure, the range upon range of piezoelectric motor that is provided with on the suspension wing board, transmission structure and piezoelectric motor all are symmetrical structure about first central line, when external force presses down the touch pad, transmit the power for the suspension wing board through the transmission structure, lead to the suspension wing board to take place bending deformation, and then drive piezoelectric motor and produce voltage output through positive piezoelectric effect, because the overall structure symmetry, press the different positions of touch pad, the voltage signal fluctuation range of piezoelectric motor output is less, pressure perception uniformity is higher. At the moment, the piezoelectric motor receives a voltage signal, the suspension wing plate is driven to generate bending deformation through the action of force generated by the inverse piezoelectric effect, and therefore vibration is transmitted to the touch pad through the transmission structure.

Drawings

Fig. 1 is a schematic cross-sectional view of a touch feedback module according to an embodiment of the invention;

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

FIG. 3 is a schematic cross-sectional view of a touch feedback module according to still another embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view illustrating a touch feedback module according to another embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of a touch feedback module according to an embodiment of the present disclosure;

FIG. 6 is a schematic view from the pendant to the touch pad in accordance with an embodiment of the present invention;

FIG. 7 is a schematic view from the pendant to the touch pad in accordance with another embodiment of the invention;

FIG. 8 is a schematic view of a view from a transfer structure to a cantilevered panel in accordance with an embodiment of the present invention;

fig. 9 is a schematic cross-sectional view illustrating a plurality of single bodies arranged in a transmission structure of a touch feedback module according to an embodiment of the present invention;

FIG. 10 is a schematic view from the transfer structure to the flap panel according to another embodiment of the present invention;

FIG. 11 is a schematic cross-sectional view illustrating a piezoelectric motor directly deposited on a suspension plate in a touch feedback module according to an embodiment of the present invention;

fig. 12 is a schematic cross-sectional view illustrating a protective layer provided on a piezoelectric motor in a touch feedback module according to an embodiment of the present invention;

FIG. 13 is a schematic diagram illustrating a stress of the touch feedback module according to an embodiment of the present invention;

FIG. 14 is a schematic cross-sectional view illustrating a transmission structure of a touch feedback module integrally formed with a touch pad according to an embodiment of the present invention;

fig. 15 is a schematic cross-sectional view illustrating a transmission structure and a suspension plate of a touch feedback module according to an embodiment of the present invention;

FIG. 16 is a cross-sectional view of a support plate according to an embodiment of the present invention;

fig. 17 is a schematic cross-sectional view illustrating a protruding portion of a suspension plate of a touch feedback module according to an embodiment of the present invention;

fig. 18 is a schematic cross-sectional view illustrating a touch feedback module directly assembled with a housing of a host according to an embodiment of the present invention;

fig. 19 is a schematic view illustrating a piezoelectric motor of a touch feedback module disposed on a side of a suspension plate away from a touch pad according to an embodiment of the invention.

Reference numerals:

10. touch feedback module 110, suspension plate 111, and carrying surface

112. Bearing part 113, suspension wing part 114 and second threaded hole

115. First groove 116, projection 117, third groove

120. Transmission structure 121, housing part 122, and transmission unit

123. Hollow area 130, touch panel 140, piezoelectric motor

142. Protective layer 150, driving circuit board 160, conductive member

170. Limiting structure 180, first supporting plate 181 and abutting part

182. First screw hole 183, plate body 184 and notch

190. Screw 200, support column 210 and main machine shell

220. Locking hole 230, buffer structure 240, second support plate

241. Second groove 250, elastic structure

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.

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.

Referring to fig. 1, fig. 2, fig. 3 and fig. 4, an embodiment of the invention provides a touch feedback module 10, which includes a suspension plate 110, a transmission structure 120, a touch pad 130 and at least one piezoelectric motor 140, wherein: the suspension wing plate 110 has a bearing surface 111 and a first central line X perpendicular to the bearing surface 111, and the suspension wing plate 110 forms a symmetrical structure about the first central line X; the piezo motors 140 are disposed on the supporting surface 111, and at least one piezo motor 140 forms a symmetrical structure about the first center line X; the transmission structure 120 is disposed on the suspended wing plate 110, and the transmission structure 120 forms a symmetrical structure about the first center line X; the touch pad 130 is mounted on a side of the transmitting structure 120 away from the suspension plate 110, and the suspension plate 110, the transmitting structure 120 and the touch pad 130 together form a receiving portion 121. Thus, the suspended wing plate 110, the transmission structure 120 and the piezoelectric motor 140 which form the touch feedback module 10 form a symmetrical structure about the first center line X, and further the transmission of the pressure sensing and the touch feedback process is realized by the symmetrical structure.

It should be noted that the "carrying surface 111" herein is an example of the placement posture shown in fig. 1, fig. 2, fig. 3 and fig. 4, and the carrying surface 111 is a lamination surface of the piezoelectric motor 140. Similarly, a line connecting the left and right sides is defined as a first direction Z, and the "extending length" in the following description is an example of the placement posture shown in fig. 1, 2, 3, and 4, that is, an extending length parallel to the illustrated first direction Z. "coincident" herein is to be understood as meaning both fully coincident and substantially coincident, with substantially coincident meaning that within reasonable tolerances it is considered to be coincident. The term "left and right" herein refers to two sides of the symmetrical structure with the first center line X, and is not limited to the placement manner, and the "left and right" is the left and right direction shown in the drawings, taking the placement postures of fig. 1, 2, 3, and 4 as an example. By "symmetrical structure" herein, it is understood that symmetrical structures include rotational symmetry, central symmetry, and axial symmetry. Wherein, the rotational symmetry means that the structure is still superposed with the original structure after rotating a certain angle relative to the central line; the central symmetry is a special case of rotational symmetry, and the rotation angle is limited to 180 degrees at this time, namely the central symmetry means that the structure is still overlapped with the original structure after rotating 180 degrees relative to the center; if the rotation angle is set to be 120 degrees, the rotational symmetric structure formed at this time is not a central symmetric structure; the axial symmetry means that the structure rotates relative to the central line by any angle and is superposed with the original structure, such as a cylindrical structure or a circular structure.

The suspended wing plate 110 mainly plays a role of bearing the piezoelectric motor 140 and forming a multi-suspended wing structure, and too thick can increase the mass of the whole structure and reduce vibration displacement, and too thin can not play a role of bearing and larger vibration acceleration. In the specific setting, the suspended wing plate 110 may be made of aluminum alloy, bakelite, glass, engineering plastic, stainless steel, other alloy materials, etc., and in this embodiment, the suspended wing plate 110 is made of aluminum alloy with light weight and high strength, so as to reduce the overall structural mass, increase the mechanical strength of the suspended wing plate 110, and improve the service life. The thickness of the suspended wing plate 110 ranges from 0.3mm to 5mm, for example, 0.3mm, 1mm, 2mm, 2.65mm, 3mm, 4mm, 5mm, etc., and the specific thickness of the suspended wing plate 110 may be selected according to the characteristics of the piezoelectric motor 140, the specific application scenario and the material. The shape of the suspended wing plate 110 can be varied, for example, the suspended wing plate 110 can be a rectangular parallelepiped, in this case, an aluminum alloy plate with a thickness of 0.8mm and a length and width of 120mm by 60mm can be used for the suspended wing plate 110, and this aluminum alloy plate can better support the piezoelectric motor 140 and has a larger vibration amplitude when being compressed, so as to facilitate pressure sensing and touch feedback; of course, the suspension plate 110 may also be square, cylindrical or other irregular shapes, and the embodiment of the present invention is not limited thereto.

The flap panel 110 forms a symmetrical structure about the first centerline X, and it is understood that the symmetrical structure includes rotational symmetry, central symmetry, and axial symmetry. When the suspension wing plate 110 is specifically arranged, the suspension wing plate 110 has a bearing portion 112 and at least two suspension wing portions 113, the number of the suspension wing portions 113 may be two, three, four or more, the suspension wing portions 113 are connected to the bearing portion 112, the suspension wing portions 113 extend in a direction perpendicular to the first center line X, the suspension wing portions 113 may be connected to the bearing portion 112 by elastic glue such as epoxy AB glue, UV glue or the like, the connection manner is not limited to the above elastic glue, the bearing portion 112 and the at least two suspension wing portions 113 may also be an integrated structure, and the suspension wing portions 113 protrude from the side surface of the bearing portion 112 and extend in a direction perpendicular to the first center line X; the central line of the bearing part 112 coincides with the first central line X, and the at least two suspension wing parts 113 form a symmetrical structure about the first central line X.

The symmetrical structure formed by the suspension wing plates 110 in this embodiment may be a rotational symmetrical structure, specifically, the suspension wing plates 110 rotate through a first central line X to achieve a coincidence effect, for example, the bearing portion 112 may be a circular plate, the three suspension wing portions 113 are three evenly arranged square plates extending around the circumference, and an included angle formed between two adjacent square plates is 120 °; for another example, the suspension wing plate 110 may have a square structure, the bearing portion 112 may have a central portion of the square structure, and the four suspension wing portions 113 are four L-shaped cylinders surrounding the central portion of the square structure.

In this embodiment, the symmetrical structure formed by the suspended wing plate 110 may be a central symmetrical structure, and referring to the placement manner shown in fig. 1, the suspended wing plate 110 may be a rectangular parallelepiped structure so that the suspended wing plate 110 presents a left-right symmetrical structure as shown in fig. 1, a front-back symmetrical structure, or a front-back left-right symmetrical structure; for example, as shown in fig. 1 and 5, the flap plate 110 has a left-right symmetrical structure, the bearing portion 112 may be a square central portion of a rectangular parallelepiped structure, and the flap portion 113 is two portions of the rectangular parallelepiped structure surrounding the square central portion; for example, as shown in fig. 6 and 7, the flap plate 110 has a symmetrical structure in both the left and right and front and rear directions, the cross-sectional shape of the flap plate 110 parallel to the bearing surface 111 may be an H-shape, the bearing portion 112 may be a square center portion of the flap plate 110, and the flap portion 113 may be a T-shaped end portion of the flap plate 110.

The symmetrical structure formed by the suspension wing plate 110 in this embodiment may be an axisymmetric structure, specifically, the suspension wing plate 110 may rotate freely through the first central line X to achieve a superposition effect, for example, the suspension wing plate 110 may be a circular plate, the bearing portion 112 may be a cylindrical central portion of the circular plate, the suspension wing portion 113 is a two-part circular ring surrounding the cylindrical central portion in the circular plate, for example, the suspension wing plate 110 may be a circular ring, the bearing portion 112 may be a hollow circular plate structure in the circular ring, and the suspension wing portion 113 is a two-part circular ring surrounding the hollow circular plate structure in the circular ring.

Transfer structure 120 primarily functions as a transfer of force for transferring force from touch pad 130 to suspension plate 110 and for transferring force from suspension plate 110 to touch pad 130. When the suspension wing plate 110 is specifically arranged, the transmission structure 120 can be made of elastic materials such as foam, rubber and plastic, and the hardness of the material is less than 80A, so that the influence caused by the deformation of the suspension wing plate 110 is eliminated, and the stability and the reliability of the structure are ensured. The transmission structure 120 may also be made of a rigid material, and then an elastic adhesive is disposed between the transmission structure 120 and the touch pad 130 to achieve connection, so that the transmission structure 120 has a good transmission effect, and the elastic adhesive between the transmission structure 120 and the touch pad 130 has a certain elasticity, so that the influence caused by deformation of the suspension plate 110 can be eliminated, and the stability and reliability of the structure can be ensured. The shape of the transmission structure 120 is not limited, and may be, for example, a rectangular parallelepiped shape, or the transmission structure 120 may be a square shape, a cylindrical shape, or the like.

The transmission structure 120 forms a symmetrical structure about the first center line X, and it is understood that the symmetrical structure includes rotational symmetry, central symmetry, and axial symmetry. In a specific arrangement, the transmission structure 120 has a plurality of transmission units 122, the number of the transmission units 122 may be two, three, four or more, the plurality of transmission units 122 form a symmetrical structure with respect to the first center line X, the transmission units 122 are disposed on the suspension portions 113, each suspension portion 113 may have one, two, three or more transmission units 122, and at this time, the center line of each transmission unit 122 does not coincide with the first center line X. Of course, the transmission structure 120 may also be a ring structure formed by a plurality of transmission units 122 connected to each other, the center line of the ring structure coincides with the first center line X, and the ring structure forms a symmetrical structure about the first center line X and is disposed around the suspension portion 110.

The symmetrical structure formed by the transmission structure 120 in the present embodiment may be a rotational symmetrical structure, specifically, the transmission structure 120 may achieve an overlapping effect by rotating through the first center line X, for example, three transmission units 122 are uniformly disposed on the circular plate-shaped suspension plate 110, and for example, four transmission units 122 are disposed at four corners of the suspension plate 110 of the long body structure.

In this embodiment, the symmetrical structure formed by the transmission structure 120 may be a central symmetrical structure, and referring to the placement manner shown in fig. 1, the transmission unit 122 may be a long-strip structure, so that the transmission structure 120 presents a left-right symmetrical structure as shown in fig. 1, a front-back symmetrical structure, or a front-back left-right symmetrical structure; for example, as shown in fig. 1 and 5, the transmission structure 120 is a bilaterally symmetric structure, as shown in fig. 8, the transmission structure 120 is a bilaterally symmetric structure, i.e., a front-back symmetric structure, and one elongated transmission unit 122 is disposed on each of the suspension portions 113, as shown in fig. 9, the transmission structure 120 is a bilaterally symmetric structure, i.e., a front-back symmetric structure, and two elongated transmission units 122 are disposed on each of the suspension portions 113, as shown in fig. 10, the transmission structure 120 is a bilaterally symmetric structure, i.e., a front-back symmetric structure, and two block-shaped transmission units 122 are disposed on each of the suspension portions 113 of the T-shaped structure, and these two block-shaped. As shown in fig. 1, a strip-shaped transmission unit is disposed on each of the left and right sides to form a transmission structure 120.

The symmetrical structure formed by the transmission structure 120 in this embodiment may be an axisymmetric structure, specifically, the transmission structure 120 may rotate through the first center line X to achieve any coincidence effect, for example, the transmission structure 120 may be an annular structure disposed around the cylindrical suspension plate 110.

The thickness of the touch panel 130 ranges from 0.5mm to 5mm, for example, 0.5mm, 1mm, 2mm, 3mm, 4mm, 5mm, and the like. When the touch panel 130 has a rectangular parallelepiped shape, the length and width of the touch panel 130 may be 120mm by 60 mm. The touch panel 130 may also be cylindrical, square, etc. The touch pad 130 may be of conventional dimensions, and other mating components, such as the transfer structure 120, the pendant plate 110, the piezoelectric motor 140, etc., may be adaptively adjusted. The touch pad 130 is suspended above the suspension plate 110 by two sets of transmission structures 120, and a certain distance is formed between the touch pad 130 and the piezoelectric motor 140 to prevent the piezoelectric motor 140 from being damaged by pressure.

In order to increase the miniaturization of the overall structure and to effectively use the respective components, as shown in fig. 1, the edge of the touch pad 130 is flush with the edge of the transfer structure 120 and the edge of the flap 110 in the direction parallel to the Z direction, and the size of the touch pad 130 may be substantially the same as the transfer structure 120 and the flap 110. Of course, not limited to the above-described form, in the specific arrangement, as shown in fig. 5, the edge of the touch panel 130 exceeds the edge of the transfer structure 120 in the direction parallel to the Z direction, the edge of the overhang panel 110 is flush with the edge of the transfer structure 120, as shown in fig. 6, the edge of the overhang panel 110 is flush with the edge of the touch panel 130 in the left-right direction, the edge of the touch panel 130 exceeds the edge of the overhang panel 110 in the front-rear direction, as shown in fig. 7, the edge of the touch panel 130 is not flush with the edge of the overhang panel 110 and exceeds the edge of the overhang panel 110, and the edge of the touch panel 130 exceeds the edge of the overhang panel 110 in the front-rear direction.

The piezoelectric motor 140 may be connected to the suspended plate 110 mechanically, for example, by a snap connection, a male-female connection, or a screw connection, or may be bonded, for example, by an OCA optical adhesive, an OCR optical adhesive, or a double-sided adhesive. The piezoelectric motor 140 includes a piezoelectric element, which is a core portion and may employ an organic piezoelectric material, an inorganic ceramic piezoelectric material, a single crystal piezoelectric material, a lead-free piezoelectric material, or the like, and an internal driving circuit. The piezoelectric element is deposited, adhered, etc. on the surface of the suspended wing plate 110, for example, as shown in fig. 11, the piezoelectric element is deposited on the whole bearing surface 111 of the suspended wing plate 110, but the piezoelectric element may also be deposited on a partial area of the bearing surface or the piezoelectric element may also be deposited on the other surface of the suspended wing plate 110 opposite to the bearing surface 111.

In a specific arrangement, as shown in fig. 1 and fig. 2, the carrying surface 111 may be a surface of the carrying portion 112 close to the touch panel 130, as shown in fig. 3 and fig. 4, the carrying surface 111 may also be a surface of the carrying portion 112 far from the touch panel 130, and of course, the carrying surface 111 may further include a surface of the carrying portion 112 close to the touch panel 130 and a surface of the carrying portion 112 far from the touch panel 130, in this case, a part of the piezoelectric motor 140 is disposed on the surface of the carrying portion 112 close to the touch panel 130, and another part of the piezoelectric motor 140 is disposed on the surface of the carrying portion 112 far from the touch.

It is understood that the piezoelectric motor 140 forms a symmetrical structure means that the piezoelectric element 140 forms a symmetrical structure about the first center line X. In this embodiment, the piezoelectric element is made of piezoelectric ceramic, and when the piezoelectric ceramic is a rectangular parallelepiped, the length, width, and height dimensions may be 50mm × 10mm × 0.2mm, and the piezoelectric element is capable of converting an applied voltage signal into a force signal, which is referred to as a reverse piezoelectric effect, and is also capable of converting an applied force signal into a voltage signal, which is referred to as a positive piezoelectric effect. It is understood that the piezoelectric element may be a rectangular parallelepiped shape, a square shape, a cylindrical shape, a ring shape, or the like. As shown in fig. 12, in order to improve the reliability of the whole module, the piezoelectric element may be first attached with a certain protection material to form a protection layer 141, and then combined with the suspension plate 110, where the protection material may be a reinforced steel sheet, a waterproof material, a flexible circuit board, or the like.

The at least one piezo motor 140 forms a symmetrical structure about the first center line X, which may be understood to include rotational symmetry, central symmetry, and axial symmetry. Specifically, the center line Y of the structure of the single piezoelectric motor 140 coincides with the first center line X to form a symmetrical structure about the first center line X, and at this time, the touch feedback module 10 has one piezoelectric motor 140 or two piezoelectric motors 140, one of the two piezoelectric motors 140 is disposed on the surface of the supporting portion 112 close to the touch pad 130, and the other is disposed on the surface of the supporting portion 112 away from the touch pad 130; the other is that the plurality of piezoelectric motors 140 form a symmetrical structure about the first center line X, in which case the center line Y of the single piezoelectric motor 140 does not coincide with the first center line X, but the center line of the overall structure formed by the plurality of piezoelectric motors 140 still coincides with the first center line X.

As shown in fig. 1, the center line Y of the piezoelectric motor 140 coincides with the first center line X, the piezoelectric motor 140 having a square structure forms a rotational symmetry structure with respect to the first center line X, the piezoelectric motor 140 having a rectangular parallelepiped structure forms a central symmetry structure with respect to the first center line X, the piezoelectric motor 140 having a cylindrical structure forms an axial symmetry structure with respect to the first center line X, and as shown in fig. 13, the piezoelectric motor 140 having a circular ring structure forms an axial symmetry structure with respect to the first center line X.

The symmetrical structure formed by the at least one piezoelectric motor 140 in this embodiment may be a rotational symmetrical structure, specifically, the at least one piezoelectric motor 140 rotates through the first center line X to achieve a coincidence effect, for example, three piezoelectric motors 140 are disposed around the bearing portion 112, and for example, four piezoelectric motors 140 are disposed at four corners of the bearing portion 112 of the cubic structure. In this embodiment, the symmetrical structure formed by at least one piezoelectric motor 140 may be a central symmetrical structure, and referring to the placement manner shown in fig. 4, the two piezoelectric motors 140 are respectively block-shaped structures so as to present a left-right symmetrical structure as shown in fig. 4, a front-back symmetrical structure, or a front-back left-right symmetrical structure.

In the embodiment provided by the invention, the bearing surface 111 is formed on the surface of the bearing part 112, the piezoelectric motor 140 is arranged on the bearing surface 111 of the suspension plate 110, the plurality of transmission units 122 are arranged on the suspension part 113, the center line of the bearing part 112 coincides with the first center line X, the plurality of suspension parts 113 and the transmission units 122 respectively form a symmetrical structure about the first center line X, the suspension plate 110 can uniformly support the touch pad 130 through the symmetrical transmission structures 120, and the piezoelectric motor 140 is connected to the bearing part 112, so that the suspension plate 110 forms a multi-suspension structure extending outwards from the middle. Each structure is distributed in a symmetrical structure, and the purpose is to improve the consistency of pressure sensing and the uniformity of touch feedback.

The touch feedback module 10 may have a regular double-suspension structure, as shown in fig. 1 and 2, the suspension plate 110 is rectangular, and a transmission unit 122 is disposed on each of the left and right sides of the suspension plate 110 to form a transmission structure 120, so that the suspension plate 110 forms a double-suspension structure extending from the middle to the left and right sides. The portion of the suspended wing plate 110 where the piezoelectric motor 140 is disposed is a middle portion, and a suspended wing portion 113 is formed by extending from the middle portion to each of two sides, the suspended wing portion 113 is used to connect or dispose the transmission structure 120, so that the suspended wing plate 110 forms a double suspended wing structure, and when the suspended wing plate 110 is stressed, the two suspended wing portions 113 can generate the same vibration effect relative to the middle portion. Of course, the two suspension portions 113 may be a single body or a plurality of separately arranged single bodies, but it is necessary to ensure bilateral symmetry.

The touch feedback module 10 may have an irregular double-suspension structure, as shown in fig. 5, 6 and 7, the cross section of the suspension plate 110 parallel to the bearing surface 111 is formed in an H shape. In some embodiments, as shown in fig. 10, a block-shaped transfer unit 122 may be disposed at each of four corners of the H-shaped flap 110 to form a symmetrical structure with both left and right sides and front and back, thereby forming an irregular double-flap structure. In other embodiments, as shown in fig. 8 and 9, two strip-shaped transmission units 122 are respectively disposed on two suspension wings to form a symmetrical structure with both left and right sides and front and back, so as to form an irregular double suspension wing structure.

Of course, besides the double-suspension-wing structure, the touch feedback module 10 may also have other structures, for example, the suspension wing plate 110 is square, and 4 centrosymmetric transmission units 122 are arranged around the circumference of the suspension wing plate 110 in a circle, and at this time, a square four-suspension-wing structure may be formed; for example, the flap 110 has a cylindrical shape, and the annular transmission units 122 are arranged in a circle around the circumferential direction of the flap 110, and in this case, a circular circumferential flap structure may be formed.

In the above embodiments, the formation manner of the transfer structure 120 is not limited. The transmission structure 120 is located between the touch pad 130 and the suspension plate 110, and the three are connected together, in this case, each transmission unit 122 is connected with the touch pad 130, and each transmission unit 122 is connected with the suspension part 113. For example, as shown in fig. 1 and 5, specifically, the transmission structure 120 is located between the suspension plate 110 and the touch pad 130, one side of the transmission structure 120 is connected to the suspension plate 110 in contact, and the other side of the transmission structure 120 is also connected to the touch pad 130 in contact. The connection mode may be mechanical, such as snap connection, concave-convex fit connection, or screw connection, or may be adhesion, such as using OCA optical adhesive, OCR optical adhesive, or double-sided adhesive. With the arrangement, the position inaccuracy of the touch panel 130 caused by the deviation of the transmission structure 120 can be avoided, and the symmetry of the whole structure is ensured.

For another example, as shown in fig. 14, the transmission structure 120 may be integrally formed with the touch pad 130, in which case, each transmission unit 122 is integrally formed with the touch pad 130, and each transmission unit 122 is connected to the suspension portion 113, the connection manner may be a mechanical type, such as a snap connection, a male-female fit connection, or a threaded connection, or an adhesive type, such as an OCA optical adhesive, an OCR optical adhesive, a double-sided adhesive, or the like. Specifically, the touch panel 130 may be integrally formed with the block-shaped or bar-shaped transfer unit 122, or may be integrally formed with the layer transfer structure 120 with a protruding structure for supporting the touch panel 130, which may reduce the number of manufacturing processes and assembly processes.

For another example, as shown in fig. 15, the transmission structure 120 may be formed integrally with the flap 110, in which case, each transmission unit 122 is formed integrally with the flap 113, and each transmission unit 122 is connected to the touch pad 130, and the connection manner may be a mechanical type, such as a snap connection, a male-female fit connection, or a screw connection, or an adhesive type, such as an OCA optical adhesive, an OCR optical adhesive, or a double-sided adhesive. Specifically, the flap plate 110 may be integrally formed with the block-shaped or strip-shaped transfer unit 122 or the layered transfer structure 120, which can reduce the number of manufacturing processes and assembly processes.

The specific working scene is as follows:

pressure sensing: as shown in fig. 13, fig. 13 is a schematic view only, and some parts are simplified. When a finger presses the touch pad 130, the pressing force F is transmitted to the transmission structure 120 through the touch pad 130, and the transmission structure 120 uniformly transmits the force to the suspension plate 110, so that the suspension plate 110 is bent and deformed, and the piezoelectric motor 140 is driven to generate and output a voltage signal through a positive piezoelectric effect. Theoretical calculation and finite element simulation prove that when different positions of the touch pad 130 are pressed, the fluctuation range of the voltage signal output by the piezoelectric motor 140 is very small and can be controlled within 10%, the requirement of the fluctuation range in practical application is met, and the consistency of pressure sensing is high. It should be noted that, pressure sensing is used for sensing different pressure levels, so as to implement different touch controls, for example, if pressure is large, a right key is indicated, and if pressure is small, a left key is indicated. And before the pressure sensing, touch sensing for determining whether a finger touches or not is further included.

Touch feedback: as shown in fig. 2, a voltage signal is applied to the piezoelectric motor 140, the piezoelectric motor 140 generates an inverse piezoelectric effect under the excitation of a voltage, and drives the suspended wing plate 110 to generate a bending deformation, because the suspended wing plate 110 and the piezoelectric motor 140 are both in a bilateral symmetry structure, the suspended wing plate 110 uniformly transmits deformation vibration to the transmission structure 120, and the transmission structure 120 transmits vibration to the touch panel 130, so that the touch panel 130 generates overall up-and-down vibration, and because the overall structure is symmetrical, the transmission structure 120 synchronously vibrates, so that the touch panel 130 can generate vibration displacement Δ s uniformly along the stacking direction.

The technical scheme at least has the following technical effects: the touch pad 130 is erected on the suspended wing plate 110 through the transmission structure 120, the piezoelectric motor 140 is arranged on the suspended wing plate 110 in a stacked mode, the suspended wing plate 110, the transmission structure 120 and the piezoelectric motor 140 are all in a symmetrical structure about a first central line X, when the touch pad 130 is pressed by external force, the force is transmitted to the suspended wing plate 110 through the transmission structure 120, the suspended wing plate 110 is caused to bend and deform, the piezoelectric motor 140 is driven to generate voltage output through positive piezoelectric effect, due to the fact that the whole structure is symmetrical, different positions of the touch pad 130 are pressed, the fluctuation range of voltage signals output by the piezoelectric motor 140 is small, and the pressure sensing consistency is high. At this time, the piezoelectric motor 140 receives the voltage signal, and generates a force effect through an inverse piezoelectric effect, so as to drive the suspension plate 110 to generate a bending deformation, so that the vibration is transmitted to the touch panel 130 through the transmission structure 120, and due to the symmetrical overall structure, the touch panel 130 can generate uniform displacement along the stacking direction, thereby improving the uniformity of touch feedback.

In some embodiments, as shown in fig. 1, the touch feedback module 10 further includes a driving circuit board 150, where the driving circuit board 150 is electrically connected to the piezoelectric motor 140 and is used for providing a voltage signal to the piezoelectric motor 140 and transmitting the voltage signal. The driving circuit board 150 is used for transmitting a voltage signal to the piezoelectric motor 140 to achieve normal operation of the positive piezoelectric effect. The driving circuit board 150 is used for providing a voltage signal to the piezoelectric motor 140 to achieve normal operation of inverse piezoelectric effect. For example, the electrode wires are led out from the upper and lower surfaces of the piezoelectric element and connected to the driving circuit board 150, and the driving circuit board 150 may be disposed on the periphery of the entire structure, integrated with the main board, or disposed separately, or disposed together with the piezoelectric motor 140, or disposed in a stacked or integrated manner with the suspension plate 110. For example, when the driving circuit board 150 is a flexible circuit board, the flexible circuit board may be disposed on a side of the suspension plate 110 away from the piezoelectric motor 140, a plurality of through holes are disposed on the suspension plate 110, and the conductive members 160 are disposed in the through holes, so that the flexible circuit board is electrically connected to the piezoelectric motor 140, specifically, the conductive members 160 may be conductive materials injected into the through holes, such as conductive paste like silver paste and carbon paste, or conductive wires coated in the through holes. At this time, the flap plate 110 functions to increase the strength of the flexible circuit board. The touch feedback applies a voltage signal to the piezoelectric motor 140 through the electrode wires by the driving circuit board 150 to realize the vibration of the suspension plate 110 and the touch pad 130, and the pressure sensing transmits a force signal to the piezoelectric motor 140 through the touch pad 130 and the suspension plate 110 to generate a voltage signal which is transmitted to the driving circuit board 150 through the electrode wires.

Further, the driving circuit board 150 constitutes a symmetrical structure about the first center line X. It is understood that symmetrical structures also include axial, central, and rotational symmetries. Specifically, the two situations can be understood, one is that the center line of the structure of the single driving circuit board 150 coincides with the first center line X to form a symmetrical structure about the first center line X, at this time, the touch feedback module 10 has one driving circuit board 150 or two driving circuit boards 150, one of the two driving circuit boards 150 is disposed on the side of the carrying portion 112 close to the touch pad 130, and the other is disposed on the side of the carrying portion 112 away from the touch pad 130; the other is that the plurality of driving circuit boards 150 form a symmetrical structure about the first center line X, and at this time, the center line of the structure of the single driving circuit board 150 itself does not coincide with the first center line X, but the center line of the overall structure formed by the plurality of driving circuit boards 150 still coincides with the first center line X. In this embodiment, the shape of the driving circuit board 150 is not limited, and may be a rectangular parallelepiped shape, a square shape, a ring shape, and the like, and thus, the embodiment of the present invention is not limited. With this arrangement, the symmetry of the entire construction can be ensured so that the suspended wing plate 110 can be uniformly subjected to the force applied thereto from the driving circuit board 150.

In some embodiments, as shown in fig. 1, 2, 3 and 4, at least one limit structure 170 is disposed on a side of the pendant board 110 close to the touch pad 130, the limit structure 170 is spaced apart from the touch pad 130, so that a certain distance is provided between the limit structure 170 and the touch pad 130, the distance limits a vibration amplitude of the touch pad 130 relative to the pendant board 110, and the vibration amplitude of the touch pad 130 relative to the pendant board 110 is smaller than or equal to the distance, therefore, by disposing the limit structure 170 on the side of the pendant board 110 close to the touch pad 130, on one hand, it can be ensured that the vibration amplitude of the touch pad 130 is limited by the limit structure 170, and further, the vibration of the touch pad 130 is controllable, and no obvious downward movement feeling occurs, and on the other hand, mechanical damage caused by touching the limit structure 170 during downward vibration of the touch pad 130 can, the life span of the touch panel 130 is improved. In a specific arrangement, the specific distance between the position limiting structure 170 and the touch pad 130 may be designed according to the actual amplitude of the downward vibration of the touch pad 130.

The limiting structure 170 is made of elastic materials such as foam, rubber and plastic, and the hardness is less than 80A. So set up, can increase limit structure 170's shock-absorbing capacity, take place mechanical damage when avoiding touch pad 130 to contact limit structure 170. For example, an EVA perforated plate (ethylene-vinyl acetate copolymer) having a hardness of 30A to 50A, the length, width, and height dimensions of 6mm by 60mm by 0.5mm, may be used.

Further, the position limiting structure 170 forms a symmetrical structure about the first center line X. Symmetrical structures also include axial, central, and rotational symmetries. Specifically, two situations can be understood, one is that the center line of the structure of the single position limiting structure 170 coincides with the first center line X to form a symmetrical structure about the first center line X, and at this time, as shown in fig. 1, the touch feedback module 10 has one position limiting structure 170 therein; the other is that the plurality of position-limiting structures 170 form a symmetrical structure about the first center line X, in this case, the center line of the structure of the single position-limiting structure 170 does not coincide with the first center line X, but the center line of the whole structure formed by the plurality of position-limiting structures 170 still coincides with the first center line X. In this embodiment, the shape of the limiting structure 170 is not limited, and may be a rectangular parallelepiped shape, a square shape, a cylindrical shape, a ring shape, and the like, and the embodiment of the present invention is not limited thereto. With this arrangement, the symmetry of the entire structure can be ensured, so that the touch pad 130 can be uniformly subjected to the position-limiting action of the position-limiting structure 170.

Specifically, the number of the limiting structures 170 may be one, or multiple, when the piezoelectric motor 140 is disposed on the side of the suspended wing plate 110 close to the touch pad 130, the limiting structures 170 may be disposed on the side of the piezoelectric motor 140 facing the touch pad 130, or may be directly disposed on the bearing surface 111 of the suspended wing plate 110, or a part of the limiting structures 170 may be disposed on the side of the piezoelectric motor 140 close to the touch pad 130, and another part of the limiting structures is disposed on the bearing surface 111 of the suspended wing plate 110, at this time, the height of the limiting structures 170 along the first center line X is greater than the height of the piezoelectric motor 140 along the first center line X. When the piezoelectric motor 140 is disposed on the side of the suspension plate 110 away from the touch pad 130, the position-limiting structure 170 is directly disposed on the bearing surface 111 of the suspension plate 110.

The piezoelectric motor 140 is disposed on the side of the pendant plate 110 close to the touch panel 130. At least one limiting structure 170 is stacked on one side of the piezoelectric motor 140 facing the touch pad 130, and the limiting structure 170 isolates the piezoelectric motor 140 from the touch pad 130, so that mechanical damage caused by direct collision between the touch pad 130 and the piezoelectric motor 140 is avoided, and the service lives of the touch pad 130 and the piezoelectric motor 140 are prolonged. In the embodiment, the limiting structure 170 is spaced from the touch pad 130, a certain distance is provided between the piezoelectric motor 140 and the touch pad 130 to limit the vibration amplitude of the touch pad 130 relative to the suspension plate 110, and the piezoelectric motor 140 is prevented from being damaged by the touch pad 130 during the reciprocating vibration process, and the limiting structure 170 is disposed on one side of the piezoelectric motor 140 facing the touch pad 130, so that the vibration amplitude of the touch pad 130 is limited by the limiting structure 170. The spacing distance between the limiting structure 170 and the touch pad 130 is set to prevent the touch pad 130 from touching the limiting structure 170 to cause mechanical damage in the process of downward vibration, and the downward vibration amplitude of the touch pad 130 is increased. In addition, when the piezoelectric motor 140 or the plurality of piezoelectric motors 140 form a ring structure, the position-limiting structure 170 may be directly disposed in a hollow position of the ring structure.

Further, as shown in fig. 1, the extension length of the stopper structure 170 parallel to the first direction Z is shorter than the extension length of the piezoelectric motor 140 parallel to the first direction Z, and the center line of the stopper structure 170 coincides with the first center line X of the piezoelectric motor 140 in the stacking direction of the stopper structure 170 and the piezoelectric motor 140. In the above-described embodiment, in order to reduce the volume of the stopper structure 170, the extension length of the stopper structure 170 is set to be shorter than the extension length of the piezoelectric motor 140, and at the same time, in order to ensure the symmetry of the entire structure, the center line of the stopper structure 170 is set to coincide with the first center line X of the piezoelectric motor 140.

Further, one side of the stopper structure 170 is connected to the piezoelectric motor 140, and the other side of the stopper structure 170 is not connected to the touch pad 130. In order to ensure that the touch pad 130 has a certain vibration amplitude and to enable the entire touch pad 130 to generate a synchronous vibration effect, one side of the limiting structure 170 is connected to the piezoelectric motor 140, and the other side of the limiting structure 170 is not connected to the touch pad 130, so that the limiting structure 170 is prevented from causing bending deformation of the touch pad 130. The connection mode of the limiting structure 170 to the piezoelectric motor 140 may be a mechanical type, such as a snap connection, a concave-convex fit connection, or a threaded connection, or may be an adhesive type, such as an OCA optical adhesive, an OCR optical adhesive, a double-sided adhesive, or the like.

In other embodiments, when the bending stiffness of the touch pad 130 is relatively high, that is, the touch pad 130 is not prone to bending with a relatively large magnitude, the position-limiting structure 170 may not be provided for limiting the position.

With continued reference to fig. 1, in some embodiments, the piezoelectric motor 140 is disposed on a side of the pendant plate 110 near the touch pad 130, and a center line Y of the piezoelectric motor 140 coincides with the first center line X. The flap 110, the transmission structure 120, and the touch panel 130 together form an accommodating portion 121, and the piezoelectric motor 140 is disposed in the accommodating portion 121 in order to save the occupied space of the piezoelectric motor 140 and improve the space utilization. In order to make the piezoelectric motor 140 have a symmetrical structure and simplify the arrangement, the center line Y of the piezoelectric motor 140 is arranged to coincide with the first center line X.

The following embodiments are provided to illustrate when the piezoelectric motor 140 is disposed on a side of the pendant panel 110 adjacent to the touch panel 130.

With continued reference to fig. 2, in some embodiments, a first support plate 180 is further stacked on the side of the pendant plate 110 facing away from the piezoelectric motor 140. By such an arrangement, the suspension wing plate 110 can be supported, the vibration amplitude of the suspension wing plate 110 can be limited, and the service life of the suspension wing plate 110 can be prolonged.

The first support plate 180 may be made of aluminum alloy, bakelite, glass, engineering plastic, stainless steel, other alloy materials, etc., but is not limited thereto. In this embodiment, the first supporting plate 180 is made of an aluminum alloy having characteristics of light weight and high strength, so as to reduce the mass of the overall structure, and increase the mechanical strength of the first supporting plate 180, thereby increasing the service life.

Further, as shown in fig. 2, the first support plate 180 has an abutting portion 181, the abutting portion 181 is connected to and abutted against the suspended blade plate 110, and the center line of the abutting portion 181 coincides with the center line Y of the suspended blade plate 110 in the stacking direction of the suspended blade plate 110 and the first support plate 180. The abutting portion 181 may be a structure having a continuous surface, i.e., having an abutting surface, or a combined structure having a plurality of discontinuous surfaces, i.e., having a plurality of abutting surfaces, forming a plurality of supporting portions, in which case, the shape of the abutting surface matches with the surface of the bearing portion 112 facing away from the touch pad 130. The abutting portion 181 can reserve an installation space for the first support plate 180 and the suspended wing plate 110, so that the first support plate 180 and the suspended wing plate 110 can be connected together, the position deviation between the first support plate 180 and the suspended wing plate 110 is avoided, and the contact reliability between the first support plate 180 and the suspended wing plate 110 is improved. By setting the center line of the abutting portion 181 to coincide with the center line Y of the suspended wing plate 110, the first support plate 180 can be made symmetrical with respect to the abutting portion 181, and the suspended wing plate 110 can be made symmetrical with respect to the abutting portion 181, so that the symmetry and consistency of the entire structure can be ensured, and the uniformity of the touch feedback and the consistency of the pressure sensing can be further ensured.

The first support plate 180 may be connected to the suspended wing plate 110 in a mechanical manner, such as a snap connection, a male-female fit connection, or a threaded connection, or in an adhesive manner, such as an OCA optical adhesive, an OCR optical adhesive, a double-sided adhesive, or the like, and the specific manner in which the first support plate 180 is connected to the suspended wing plate 110 is determined according to the actual situation of the touch feedback module 10.

As shown in fig. 2 and 16, in the stacking direction of the suspended wing plate 110 and the first support plate 180, the abutting portion 181 has a first screw hole 182, the suspended wing plate 110 has a second screw hole 114, and the abutting portion 181 and the suspended wing plate 110 are locked by a screw 190 inserted into the first screw hole 182 and the second screw hole 114. Specifically, the first threaded hole 182 may be a through hole penetrating through the abutting portion 181 in the thickness direction, and the second threaded hole 114 may also be a blind hole partially penetrating through the suspended plate 110, so that the screw 190 sequentially penetrates through the first threaded hole 182 and the second threaded hole 114, and the piezoelectric motor 140 is prevented from being damaged by penetrating through the suspended plate 110. The center lines of the first and second threaded

holes

182 and 114 coincide to ensure alignment of the two holes for smooth installation of the screw 190. The screw 190 may be flat-headed, tapered-headed, or countersunk. In the above technical solution, in order to improve the connection reliability between the suspended wing plate 110 and the first support plate 180, the suspended wing plate 110 and the first support plate 180 are fastened together by screwing, and can be replaced when the first support plate 180 is seriously damaged.

In addition, the first threaded hole 182 and the second threaded hole 114 may be provided in one set, or may be provided in two sets, three sets, or other sets to enhance the reliability of the connection. For example, as shown in fig. 2 and 16, two sets of first threaded holes 182 and two sets of second threaded holes 114 are provided, and the center lines of the first threaded holes 182 and the center lines of the second threaded holes 114 coincide or substantially coincide, and correspondingly, two sets of screws 190 are provided, so as to lock the first support plate 180 and the cantilever plate 110.

Further, since the abutting portion 181 is intended to support the suspended wing plate 110, in order to ensure that the piezoelectric motor 140 can drive the suspended wing plate 110 to vibrate without being affected, the projection profile of the abutting portion 181 on the suspended wing plate 110 may be set to be smaller than the projection profile of the piezoelectric motor 140 on the suspended wing plate 110. For example, from the perspective shown in fig. 1, the extension length of the abutting portion 181 parallel to the first direction Z is shorter than the extension length of the piezoelectric motor 140 parallel to the first direction Z. From other perspectives, the extension length corresponding to the abutting portion 181 is shorter than the extension length corresponding to the piezoelectric motor 140.

The first support plate 180 further includes a plate body 183 connected to a side of the abutting portion 181 and extending in a direction perpendicular to a center line of the abutting portion 181, and a gap is provided between a surface of the plate body 183 adjacent to the suspended wing plate 110 and the suspended wing plate 110 to provide a vibration space for the suspended wing plate 110. The gap may be present around the plate 183, or may be present on both the left and right sides or both the front and rear sides of the plate 183. The plate body 183 and the contact portion 181 constitute the first support plate 180, and may be formed integrally or by being connected to each other. The vibration space refers to a space formed by the suspension plate 110 vibrating up and down. In the above-described embodiment, since the abutting portion 181 is fixedly connected to the suspended wing plate 110, when the suspended wing plate 110 vibrates, the suspended wing plate 110 is displaced up and down beyond the abutting portion 181, and in order to avoid the first support plate 180 from interfering with the up and down displacement of the suspended wing plate 110, a gap is provided between the plate 183 and the suspended wing plate 110, that is, a gap is provided between the first support plate 180 and the suspended wing plate 110, which is a position beyond the abutting portion 181.

Since the abutting portion 181 is connected to the suspended wing plate 110, when the suspended wing plate 110 vibrates, the vibration amplitude increases from the abutting portion 181 to a position away from the abutting portion 181, and in order to provide a larger vibration space for the suspended wing plate 110 and prevent the first support plate 180 from hindering the vibration of the suspended wing plate 110, the gap between the plate 183 and the suspended wing plate 110 tends to increase from the abutting portion 181 to the edge position of the plate 183 in a direction perpendicular to the center line of the abutting portion 181, that is, the gap between the first support plate 180 and the suspended wing plate tends to increase.

In one embodiment, the edge of the plate 183 is aligned with the edge of the suspended wing plate 110 in a direction parallel to the first center line X, and the gap between the edge of the plate 183 and the edge of the suspended wing plate 110 is in a range of 0.1mm to 0.5mm at the position of the edge of the plate 183 and the edge of the suspended wing plate 110. For example 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5 mm. The technical scheme sets the gap range between the edge of the plate body 183 and the edge of the suspension plate 110, so that the phenomenon that the finger presses the suspension plate 110 to obviously move downwards when the gap is too large is prevented, and the problems that the manufacturing requirement is high when the gap is too small and the pressure sensing output signal is too small when the gap is too small are also prevented.

In an embodiment, the abutment 181 has an extension K parallel to the first direction Z in the range 4mm-12mm, e.g. 4mm, 6mm, 8mm, 10mm, 12 mm. The thickness H of the first support plate 180 at the abutment 181 ranges from 0.8mm to 1.6mm, e.g., 0.8mm, 1.0mm, 1.2mm, 1.4mm, 1.6 mm. The thickness of the first support plate 180 at the abutting portion 181 may be understood as the thickness at which the thickness of the first support plate 180 is the largest. The extension length of the abutting portion 181 is set in the above technical solution, so that the fixed suspension plate 110 can be well supported, and the influence of the excessively long abutting portion 181 on the vibration of the suspension plate 110 and the influence of the excessively short abutting portion 181 on the connection capability can be avoided. Above-mentioned technical scheme has still set for the thickness of first backup pad 180, can guarantee the intensity and the stability of first backup pad 180, makes first backup pad 180 at certain quality range. Of course, the above numerical range may be adjusted appropriately according to the material.

Alternatively, the plate 183 and the suspension plate 110 have a gap therebetween, and it can be understood that the first support plate 180 forms a notch 184 outward from the abutting portion 181. The first support plate 180 forms the notch 184, that is, the part of the first support plate 180 except the abutting part 181 is not in direct contact with the suspended wing plate 110, when the suspended wing plate 110 vibrates downwards from the two sides except the abutting part 181, a certain vibration displacement is provided, the notch 184 not only plays a role of limiting the vibration space of the suspended wing plate 110, but also plays a role of reducing the vibration space of the suspended wing plate 110, so that the vibration amplitude of the suspended wing plate 110 is limited within a certain range.

The notches 184 are understood to be at least two left and right notches 184 formed by forming an abutting portion 181 at a middle position of a flat plate structure having a rectangular parallelepiped shape in which one surface is in contact with the suspended wing plate 110, and forming two inclined surfaces, two arc surfaces, or other shapes which are not in contact with the suspended wing plate 110 from the abutting portion 181 to at least left and right sides. When the abutting portion 181 is notched all around, four notches may be formed. For example, assuming two inclined planes, as shown in fig. 16, the cross section of the first support plate 180 can be seen as a combined pattern of a trapezoid and a rectangle, the width K of the narrow side of the trapezoid corresponds to the extension K of the abutting portion 181 parallel to the first direction Z, and can range from 4mm to 12mm, specifically from 4mm, 6mm, 8mm, 10mm, and 12mm, and the thickness H of the combined pattern corresponds to the thickness H of the first support plate 180 at the abutting portion 181 and ranges from 0.8mm to 1.6mm, specifically from 0.8mm, 1.0mm, 1.2mm, 1.4mm, and 1.6 mm. The value range can play a good role in supporting the fixed suspension plate 110, and can not excessively increase the mass of the whole structure. In this embodiment, the width K of the narrow side of the trapezoid is 8mm, and the thickness H of the combined pattern is 1.2 mm. In addition, the height difference of the trapezoidal waist portion is preferably controlled to be between 0.1mm and 0.5mm, corresponding to the range of the gap between the edge of the first support plate 180 and the edge of the flap plate 110, for example, 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5 mm. If too large, the flap 110 has a noticeable downward movement when pressed by a finger; if it is too small, the manufacturing requirement is high, and the press pressure sensing output signal is small.

In one embodiment, as shown in fig. 2, the surface of the bearing part 112 facing the touch pad 130 has a first groove 115, a center line of the first groove 115 coincides with a first center line X, the piezoelectric motor 140 is disposed in the first groove 115, and a center line of the piezoelectric motor 140 coincides with the first center line X. Since the amplitude of the downward vibration of the touch pad 130 is limited by the distance between the piezoelectric motor 140 and the touch pad 130, by providing the first groove 115 on the bearing portion 112, the piezoelectric motor 140 is disposed in the first groove 115, and the thickness of the transmission structure 120 can be reduced under the condition that the same downward vibration amplitude of the touch pad 130 is ensured, so that the overall thickness of the touch feedback module 10 can be reduced. Of course, the first groove 115 is not limited to be disposed on the surface of the carrying portion 112 facing the touch pad 130, but may be disposed inside the carrying portion 112, in which case the piezoelectric motor 140 is disposed inside the carrying portion 112, in which case the supporting structure for supporting the suspension plate 110 is not limited to the first supporting plate 180, and may also be in the form of the supporting posts 200 and the protrusions 116 described below.

In other embodiments, as shown in fig. 1, at least one supporting column 200 is further stacked on the side of the pendant plate 110 facing away from the piezoelectric motor 140, and each supporting column 200 abuts against the surface of the bearing portion 112 facing away from the touch pad 130 and is locked to the bearing portion 112. In this embodiment, the support posts 200 are used to support the overall construction, providing a fulcrum for the vibration of the cantilevered panel 110. The support column 200 can be locked to the suspension plate 110 by glue bonding, screw locking, or concave-convex buckling. When the number of the support columns 200 is 1, the center line of the support columns 200 coincides with the first center line X. As shown in fig. 1, when there are a plurality of support pillars 200, the plurality of support pillars 200 form a symmetrical structure about the first center line X, and the shape of the support pillars 200 is not limited, and may be a rectangular parallelepiped shape, a square shape, a cylindrical shape, and the like, and thus, the embodiment of the present invention is not limited. So arranged, the symmetry of the overall construction can be ensured so that the suspended wing plate 110 can be uniformly subjected to the supporting force of the supporting column 200. It should be noted that, as shown in fig. 1 and 13, the stacking of the at least one supporting column 200 on the side of the pendant plate 110 facing away from the piezoelectric motor 140 is not only suitable for the case where the piezoelectric motor 140 is located on the bearing portion 112 close to the touch pad 130, but also suitable for the case where the piezoelectric motor 140 is located on the bearing portion 112 facing away from the touch pad 130.

In a specific arrangement, in order to ensure that the piezoelectric motor 140 can drive the suspended wing plate 110 to vibrate without being affected, a projection profile of a surface of the at least one supporting column 200, which is in contact with the bearing portion 112 away from the touch pad 130, on the suspended wing plate 110 may be set to be smaller than a projection profile of the piezoelectric motor 140 on the suspended wing plate 110. For example, from the perspective shown in fig. 1, the extension length of the surface of the two support columns 200 abutting against the bearing part 112 away from the touch pad 130, which is parallel to the first direction Z, is shorter than the extension length of the piezoelectric motor 140, which is parallel to the first direction Z. From other perspectives, the extension length of the two support columns 200 corresponding to the surface of the bearing part 112 abutting away from the touch pad 130 is shorter than the extension length of the piezoelectric motor 140.

With continued reference to fig. 4 and 17, in other embodiments, the suspension plate 110 has a protrusion 116 on a side facing away from the piezoelectric motor 140, the number of the protrusions 116 may be one, or may be multiple, and the protrusions 116 are symmetrical with respect to the first center line X. As shown in fig. 4, when the number of the projections 116 is 1, the center line of the projection 116 coincides with the first center line X. When the number of the protruding portions 116 is plural, the plural protruding portions 116 form a symmetrical structure about the first center line X, and the shape of the protruding portions 116 is not limited, and may be a rectangular parallelepiped shape, a square shape, a cylindrical shape, and the like, and thus, the embodiment of the present invention is not limited. With this arrangement, the symmetry of the overall construction can be ensured so that the suspended wing plate 110 can be uniformly supported by the projecting portion 116. It should be noted that, referring to fig. 17, the protrusion 116 on the side of the suspension plate 110 facing away from the piezoelectric motor 140 is suitable for the case that the piezoelectric motor 140 is located on the bearing portion 112 close to the touch pad 130, and also suitable for the case that the piezoelectric motor 140 is located on the bearing portion 112 facing away from the touch pad 130. When the piezoelectric motor 140 is located on the supporting portion 112 and away from the touch pad 130, the piezoelectric motor 140 is staggered from the protrusion 116, and needs to be located outside the piezoelectric motor 140 or in the hollow position of the annular piezoelectric motor 140, so as to prevent the piezoelectric motor 140 from being damaged by machinery.

In order to enable the piezoelectric motor 140 to drive the suspension wing plate 110 to vibrate without being influenced by gravity, a projection profile of the protrusion 116 on the bearing surface 111 of the suspension wing plate 110 is smaller than a projection profile of the piezoelectric motor 140 on the bearing surface 111 of the suspension wing plate 110, for example, from the perspective of fig. 4 and 17, an extension length of the protrusion 116 in the first direction Z is smaller than an extension length of the piezoelectric motor 140 in the first direction Z. The extension length corresponding to the protrusion 116 is shorter than the extension length corresponding to the piezoelectric motor 140 when viewed from other viewpoints. In this embodiment, the side of the suspension plate 110 facing away from the touch pad 130 has a protrusion 116, and the protrusion 116 is used to support the integral structure, provide a fulcrum for the vibration of the suspension plate 110, and assemble the integral structure in the host housing, and the first support plate 180 or the support column 200 is not needed. Specifically, glue bonding, thread locking and concave-convex buckling can be adopted for assembly. Meanwhile, the protruding portion 116 limits the vibration amplitude of the two side edges of the suspended wing plate 110, and it can be understood that an included angle exists between the two suspended wings of the suspended wing plate 110 and the protruding portion 116, and the protruding portion 116 limits the vibration amplitude of the two side edges of the suspended wing plate 110 because the two suspended wings are limited by the included angle when vibrating downwards.

Of course, with continued reference to fig. 18, in some other embodiments, the supporting structure may be directly the host housing 210, and the touch feedback module 10 is directly fixed to the host housing 210 by glue adhesion, screw locking, and concave-convex fastening, so as to omit a separate supporting structure. The main body housing 210 has a connection portion formed thereon to provide a fulcrum for the suspension wing plate 110 to vibrate, and to reserve a vibration space for the suspension wing plate 110, and a center line of the connection portion coincides with the first center line X.

In addition, with continued reference to fig. 19, when the piezoelectric motor 140 may be disposed on a side of the suspension panel 110 away from the touch pad 130, the bearing portion 112 is provided with a locking hole 220 for locking the suspension panel 110 with other members through a locking structure. When the first support plate 180 is disposed on the side of the pendant plate 110 away from the touch pad 130, the first support plate 180 needs to reserve an occupied space for the piezoelectric motor 140 in space, at this time, the locking hole 220 is a threaded hole, and the thread locking structure connected to the threaded hole needs to be located at a position outside the piezoelectric motor 140, so as to prevent mechanical damage to the piezoelectric motor 140, and when the piezoelectric motor 140 is a ring structure, the abutting portion 181 and the thread locking structure may be located in a hollow position of the ring structure. When the support posts 200 are disposed on the side of the pendant plate 110 away from the touch pad 130, the locking holes 220 are connected to the support posts 200, and the support posts 200 need to be located outside the piezoelectric motor 140 or in the hollow position of the ring-shaped piezoelectric motor 140 to prevent mechanical damage to the piezoelectric motor 140. When the cantilevered panel 110 is assembled directly with the host housing 210 without the protrusion 116, the locking structure also needs to be located at a position outside the piezoelectric motor 140. In addition, at this time, the piezoelectric motor 140 may be provided at both the side of the pendant panel 110 facing away from the touch panel 130 and the side close to the touch panel 130.

On the basis of the above supporting structures, in order to avoid the touch pad 130 from having a relatively obvious downward movement feeling when pressed, one side of the suspension wing plate 110 away from the touch pad 130 is provided with at least one buffer structure 230, and the buffer structure 230 is used for hindering the suspension wing plate 110 from deforming downwards when the touch pad 130 is pressed, so that the downward vibration amplitude of the suspension wing plate 110 is reduced, and further, the touch pad 130 can be prevented from having a relatively obvious downward movement feeling, and the user experience is improved. In a specific arrangement, in order to ensure symmetry and consistency of the overall configuration, at least one of the buffer structures 230 is arranged in a symmetrical configuration about the first center line X, and when the number of the buffer structures 230 is 1, the center line of the buffer structure 230 coincides with the first center line X. When the number of the buffer structures 230 is plural, the plural buffer structures 230 constitute a symmetrical structure with respect to the first center line X, as shown in fig. 1, two sets of the buffer structures 230 are disposed at positions of the suspension wing plates 110 near the ends, and the two sets of the buffer structures 230 are disposed as a symmetrical structure with respect to the first center line X. The shape of the buffer structure 230 is not limited, and may be a rectangular parallelepiped shape, a square shape, a cylindrical shape, etc., and thus, embodiments of the present invention are not limited thereto.

Of course, with continued reference to fig. 3, in other embodiments, when the piezoelectric motor 140 is disposed on a side of the carrying portion 112 facing away from the touch pad 130, the supporting structure may also be a second supporting plate 240, and the second supporting plate 240 is connected to the suspension portion 112 through an elastic structure 250; the touch feedback module 10 is connected to the suspension plate 110 and the second support plate 240 through the elastic structure 250, so that the second support plate 240 supports the suspension plate 110, and the elastic structure 250 provides a gap between the suspension plate 110 and the second support plate 240, which is a vibration space of the suspension part 113, so as to ensure that the suspension plate 110 has a certain vibration amplitude, and the elastic structure 250 can avoid causing the touch pad 130 to obviously move downwards, thereby improving user experience. While ensuring symmetry and consistency of the overall construction, the resilient structures 250 are arranged in a symmetrical configuration about the first centerline, as shown in fig. 3, two sets of resilient structures 250 are located at the ends of the flap portion 113, and two sets of resilient structures 250 are arranged in a symmetrical configuration about the first centerline X.

Further, with reference to fig. 3, a second groove 241 is disposed on a surface of the second supporting plate 240 facing the supporting portion 112, and in order to make the second groove 241 form a symmetrical structure and simplify the arrangement manner, a center line of the second groove 241 is disposed to coincide with the first center line X, at this time, the piezoelectric motor 140 is accommodated in the second groove 241, and the center line of the piezoelectric motor 140 coincides with the first center line X, so as to ensure symmetry and consistency of the overall structure. Since the amplitude of the downward vibration of the overhang portion 113 is limited by the distance between the piezoelectric motor 140 and the second support plate 240, the second groove 241 is disposed on the surface of the second support plate 240 facing the bearing portion 112, and the piezoelectric motor 140 is accommodated in the second groove 241, the thickness of the elastic structure 250 can be reduced under the condition that the touch pad 130 is ensured to vibrate downward at the same amplitude, and the overall thickness of the touch feedback module 10 can be further reduced.

Further, with continued reference to fig. 3, the surface of the carrying portion 112 facing away from the touch pad 130 has a third groove 117, and in order to make the third groove 117 form a symmetrical structure and simplify the arrangement, the center line of the third groove 117 is arranged to coincide with the first center line X, at this time, the piezoelectric motor 140 is arranged in the third groove 117, and the center line of the piezoelectric motor 140 coincides with the first center line X, so as to ensure the symmetry and consistency of the whole structure. Because the amplitude of the downward vibration of the suspension portion 113 is limited by the distance between the piezoelectric motor 140 and the second support plate 240, the third groove 117 is formed in the bearing portion 112, and the piezoelectric motor 140 is disposed in the third groove 117, so that the thickness of the elastic structure 250 can be reduced under the condition that the same downward vibration amplitude of the suspension portion 113 is ensured, and the overall thickness of the touch feedback module 10 can be reduced.

The embodiment of the invention further provides a touch device, which includes the touch feedback module 100 according to any of the above embodiments. 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 of the notebook computer, which is also called a PC touch feedback module.

The technical scheme at least has the following technical effects: the touch pad 130 is erected on the suspended wing plate 110 through the transmission structure 120, the piezoelectric motor 140 is arranged on the suspended wing plate 110 in a stacked mode, the suspended wing plate 110, the transmission structure 120 and the piezoelectric motor 140 are all in a symmetrical structure about a central line X of the suspended wing plate 110, when external force presses the touch pad 130, force is transmitted to the suspended wing plate 110 through the transmission structure 120, the suspended wing plate 110 is caused to bend and deform, the piezoelectric motor 140 is driven to generate voltage output through positive piezoelectric effect, due to the fact that the whole structure is symmetrical, different positions of the touch pad 130 are pressed, the fluctuation range of voltage signals output by the piezoelectric motor 140 is small, and pressure sensing consistency is high. At this time, the piezoelectric motor 140 receives the voltage signal, and generates a force effect through an inverse piezoelectric effect, so as to drive the suspension plate 110 to generate a bending deformation, so that the vibration is transmitted to the touch panel 130 through the transmission structure 120, and due to the symmetrical overall structure, the touch panel 130 can generate uniform displacement along the stacking direction, thereby improving the uniformity of touch feedback.

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 invention. 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. A touch feedback module, comprising:

the suspension wing plate is provided with a bearing surface and a first central line vertical to the bearing surface, and the suspension wing plate forms a symmetrical structure relative to the first central line;

the piezoelectric motor is arranged on the bearing surface and forms a symmetrical structure relative to the first central line;

the transmission structure is arranged on the suspension wing plate and forms a symmetrical structure about the first center line;

and the touch pad is erected on one side of the transfer structure, which is far away from the suspension wing plate.

2. The touch feedback module of claim 1, wherein the suspension plate has a carrying portion and at least two suspension portions, a center line of the carrying portion coincides with the first center line, the suspension portions are connected to the carrying portion and extend toward an outer side of the carrying portion in a direction perpendicular to the first center line, and the at least two suspension portions are symmetrical with respect to the first center line.

3. The touch feedback module according to claim 2, wherein the transmission structure has a plurality of transmission units, the transmission units form a symmetrical structure with respect to the first center line, and the transmission units are disposed on the suspension portion.

4. The touch feedback module according to claim 2, wherein the plurality of transmission units and the suspension plate are of an integral structure, and each transmission unit is connected with the touch pad; or, the plurality of transmission monomers and the touch pad are of an integrated structure, and each transmission monomer is connected with the suspension wing plate.

5. The touch feedback module according to claim 2, wherein the carrying surface comprises a surface of the carrying portion facing away from the touch pad, and/or wherein the carrying surface comprises a surface of the carrying portion facing towards the touch pad.

6. The touch feedback module according to claim 5, wherein when the carrying surface only includes the surface of the carrying portion facing the touch panel, a first supporting plate is disposed on a side of the carrying portion facing away from the touch panel, the first supporting plate has an abutting portion, the abutting portion is connected to and abutted against the carrying portion, and a center line of the abutting portion coincides with the first center line.

7. The touch feedback module according to claim 6, wherein the abutting portion has a first threaded hole, the suspension plate has a second threaded hole, and the abutting portion and the suspension plate are locked by screws inserted into the first threaded hole and the second threaded hole along a direction parallel to the first center line.

8. The touch feedback module according to claim 6, wherein the first support plate further comprises a plate connected to a side of the abutting portion and extending in a direction perpendicular to the first center line, and a gap is formed between a surface of the plate adjacent to the suspended wing plate and the suspended wing plate.

9. The touch feedback module according to claim 8, wherein a gap between the board body and the suspension plate increases from the abutting portion to an edge of the board body in a direction perpendicular to the first center line.

10. The touch feedback module according to claim 8, wherein an edge of the board body and an edge of the suspension plate are aligned in a direction parallel to the first center line, and a gap between the board body and the suspension plate at the position of the edge of the board body and the edge of the suspension plate is in a range of 0.1mm to 0.5 mm.

11. The touch feedback module according to claim 8, wherein the thickness of the first supporting plate and the abutting portion ranges from 0.8mm to 1.6 mm.

12. The touch feedback module according to claim 6, wherein a surface of the carrier facing the touch pad has a first groove, a center line of the first groove coincides with the first center line, the piezoelectric motor is disposed in the first groove, and a center line of the piezoelectric motor coincides with the first center line.

13. The touch feedback module according to claim 5, wherein at least one supporting column is disposed on a side of the carrying portion away from the touch pad, the at least one supporting column forms a symmetrical structure with respect to the first center line, and each supporting column abuts against a surface of the carrying portion away from the touch pad and is locked to the carrying portion.

14. The touch feedback module of claim 5, wherein a surface of the carrier facing away from the touch pad has at least one protrusion, and the at least one protrusion forms a symmetrical structure with respect to the first center line.

15. The touch feedback module according to any of claims 5-14, wherein a side of the suspension plate facing away from the touch pad is provided with at least one buffer structure, and the at least one buffer structure forms a symmetrical structure with respect to the first center line.

16. The touch feedback module according to claim 5, wherein when the carrying surface includes a surface of the carrying portion facing away from the touch pad, a second supporting plate is disposed on a side of the carrying portion facing away from the touch pad, the second supporting plate is connected to the suspension portion through an elastic structure, and the elastic structure forms a symmetrical structure with respect to the first center line.

17. The touch feedback module of claim 16, wherein a second groove is disposed on a surface of the second supporting plate facing the supporting surface, a center line of the second groove coincides with the first center line, the piezoelectric motor is accommodated in the second groove, and the center line of the piezoelectric motor coincides with the first center line.

18. The touch feedback module according to claim 17, wherein a surface of the carrier facing away from the touch pad has a third groove, a center line of the third groove coincides with the first center line, the piezoelectric motor is disposed in the third groove, and a center line of the piezoelectric motor coincides with the first center line.

19. The touch feedback module according to claim 5, wherein at least one position-limiting structure is disposed on a side of the suspension plate close to the touch pad, and the position-limiting structure is spaced apart from the touch pad.

20. The touch feedback module of claim 19, wherein the at least one position limiting structure forms a symmetrical structure with respect to the first center line.

21. The touch feedback module of claim 20, wherein when the carrying surface includes a surface of the carrying portion facing the touch pad, the at least one position limiting structure is disposed on a side of the piezoelectric motor facing the touch pad.

22. The touch feedback module according to claim 1, further comprising a driving circuit board electrically connected to the piezoelectric motor for providing a voltage signal to the piezoelectric motor and transmitting the voltage signal.

23. The touch feedback module of claim 22, wherein the driving circuit board is disposed on the suspension plate and has a symmetrical structure with respect to the first center line.

24. A touch device comprising the touch feedback module of any one of claims 1-23.