CN206627922U

CN206627922U - Touch feedback keyboard and terminal

Info

Publication number: CN206627922U
Application number: CN201720387936.3U
Authority: CN
Inventors: 冯玉华; 潘铁政
Original assignee: SUZHOU PANT PIEZOELECTRIC TECH Co Ltd
Current assignee: SUZHOU PANT PIEZOELECTRIC TECH Co Ltd
Priority date: 2017-04-13
Filing date: 2017-04-13
Publication date: 2017-11-10
Anticipated expiration: 2027-04-13

Abstract

Haptic feedback technology field is the utility model is related to, more particularly, to a kind of touch feedback keyboard and terminal, the technical problem of effective touch feedback can not be provided to alleviate slight keyboard present in prior art.Including：Front is provided with the panel, the center connected with the back side of the panel, PCB backboards, the piezoelectric element between the center and the PCB backboards, the circuit module by being connected from the wire that PCB backboards are drawn with the piezoelectric element circuit connected with the back side of the center and having gap between the center of key legend, wherein, the circuit module separates with keyboard.Touch feedback keyboard provided by the utility model is capable of the touch feedback of analog mechanical button, also, because circuit module separates with keyboard, it is thus possible to the volume of keyboard is effectively reduced, meets the trend of keyboard ultrathin development.

Description

Touch feedback keyboard and terminal

Technical field

Haptic feedback technology field is the utility model is related to, more particularly, to a kind of touch feedback keyboard and terminal.

Background technology

Keyboard is a kind of device for providing input to computer equipment.There is traditional keyboard moveable machinery to press Key, when a user presses a key, button move down, and the process moved down has provided a user sense of touch sensation, are pressed with instruction Key has been activated.

With the trend that keyboard is thinned, keyboard highly significant reduces, and traditional has the mechanical of larger pressing stroke Bond structure has been difficult in adapt to the development trend of keyboard slimming, at present slight keyboard more using small stroke button or touch press Bond structure.However, the button or touch-key of either small stroke, with being difficult to experience effective feedback per family, cause In actual use, user can not confirm whether pressing operation successfully completes, thus cause user operationally many Puzzlement.

Thus, the problem of slight keyboard of the prior art can not provide effective touch feedback is urgently to be resolved hurrily as people Technical problem.

Utility model content

The purpose of this utility model is to provide a kind of touch feedback keyboard and terminal, to alleviate present in prior art Slight keyboard can not provide the technical problem of effective touch feedback.

In order to solve the above technical problems, technical scheme provided by the utility model is：

In a first aspect, the utility model provides a kind of touch feedback keyboard, including：

Front is provided with the panel, the center being connected with the back side of the panel, the back side with the center of key legend It is connected and the PCB backboards with gap, the piezoelectricity between the center and the PCB backboards is first between the center Part, the circuit module by being connected from the wire that PCB backboards are drawn with the piezoelectric element circuit, wherein, the circuit module Separated with keyboard.

Further,

The center be fitted with around the position of the piezoelectric element be provided with it is multiple be used for reduce center to piezoelectricity member The through hole of the deformation constraint of part.

Further,

The through hole is long stripes through hole.

Further,

The quantity of the through hole be no less than three, three through holes be distributed in three sides of the piezoelectric element and mutually It is not connected to.

Further,

The piezoelectric element corresponds with the key legend, and the piezoelectric element is in the orthographic projection of the panel Area is less than the area of key legend.

Further,

The material of the piezoelectric patches is one kind in electrodeless piezoelectric, organic piezoelectric materials or composite piezoelectric material.

Further,

The piezoelectric patches is single layer piezoelectric potsherd or multilayer piezoelectric ceramic piece.

Further,

The material of the center is metal.

Further,

The material of the panel is plastics.

Second aspect, the utility model provide a kind of touch feedback method, and the circuit module is received by the piezoelectricity Analog signal caused by element, key position signal and drive signal are generated, and the key position signal is transferred to calculating Machine equipment, the drive signal is transferred to the piezoelectric element；

The piezoelectric element receives the drive signal, vibratory output is produced in the presence of the drive signal and by described in Vibratory output is transferred to the panel.

Further,

The circuit module is provided with time threshold and voltage threshold；

It is more than voltage threshold in the voltage of the analog signal, also, when exceeding the duration of the analog signal Between threshold value when, the circuit module output drive signal to piezoelectric element.

Further,

The circuit module is additionally provided with time interval threshold value；

When the time interval of second of analog signal and first time analog signal exceedes the time interval threshold value, judge Second of analog signal is effective.

Further,

The analog signal includes the trigger signal as caused by finger presses the panel, and is gradually distance from institute by finger Interrupt signal caused by panel is stated, the trigger signal and the interrupt signal form continuous waveform signal；

It is more than voltage threshold in the voltage of the trigger signal, also, when exceeding the duration of the trigger signal Between threshold value when, the circuit module output drive signal to the piezoelectric element；

It is more than voltage threshold in the voltage of the interrupt signal, also, when exceeding the duration of the interrupt signal Between threshold value when, the circuit module output drive signal to the piezoelectric element.

The third aspect, the utility model provide a kind of touch feedback terminal, including above-mentioned touch feedback keyboard.

With reference to above technical scheme, the beneficial effect that the utility model can reach is：

Because the utility model provides a kind of touch feedback keyboard, including：Front be provided with key legend panel, with The connected center in the back side of the panel, it is connected with the back side of the center and the PCB with gap between the center Backboard, the piezoelectric element between the center and the PCB backboards, wire and the pressure by being drawn from PCB backboards The circuit module of electric device circuit connection, wherein, the circuit module separates with keyboard.

The face-key pattern of pressing panel, pressure transmission to piezoelectric element, piezoelectric element produce trigger signal, triggering letter Number circuit module is transferred to by the wire being connected with the piezoelectric element circuit drawn from PCB backboards, analog signal is passed through Output drive signal after the processing of circuit module, drive signal are transferred to piezoelectric element by wire, due to inverse piezoelectric effect, pressure Electric device produces deformation vibration amount, and vibratory output is transferred to panel and completes touch feedback, above-mentioned touch feedback keyboard by panel It is capable of the sense of touch impression of analog mechanical button, giving user has made the perception of press-button actuated of mechanically movable.

Brief description of the drawings

, below will be right in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, describe below In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 is the explosive view for the touch feedback keyboard that the utility model embodiment provides；

Fig. 2 is the front schematic view of the panel in the touch feedback keyboard that the utility model embodiment provides；

Fig. 3 is the structural representation of the center in the touch feedback keyboard that the utility model embodiment provides；

Fig. 4 is that the waveform of the analog signal and drive signal in the touch feedback method that the utility model embodiment provides shows It is intended to.

Icon：1- panels；2- centers；3- piezoelectric elements；4-PCB backboards；21- through holes.

Embodiment

The technical solution of the utility model is clearly and completely described below in conjunction with accompanying drawing, it is clear that described Embodiment is the utility model part of the embodiment, rather than whole embodiments.Based on the embodiment in the utility model, sheet The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to this practicality Novel protected scope.

, it is necessary to explanation in description of the present utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular Directly ", the orientation of the instruction such as " level ", " interior ", " outer " or position relationship are based on orientation shown in the drawings or position relationship, are only Described for the ease of description the utility model and simplifying, rather than instruction or imply signified device or element must have it is specific Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.In addition, term " the One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that instruction or hint relative importance.

, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition Concrete meaning of the language in the utility model.

It should be noted that：The front addressed herein refers to the one side towards user, and the back side refers to one away from user Face.For example, the front of panel refers to the one side towards user of panel, the back side of panel refers to the one side away from user.

Embodiment 1, embodiment 2 and embodiment 3 are described in detail below in conjunction with the accompanying drawings：

Fig. 1 is the explosive view for the touch feedback keyboard that the utility model embodiment provides；Fig. 2 is the utility model embodiment The front schematic view of panel in the touch feedback keyboard of offer；Fig. 3 is the touch feedback key that the utility model embodiment provides The structural representation of center in disk；Fig. 4 be the utility model embodiment provide touch feedback method in analog signal with The waveform diagram of drive signal.

Embodiment 1

A kind of touch feedback keyboard is present embodiments provided, including：

Front is provided with the panel 1 of key legend, the center 2 being connected with the back side of panel 1, is connected with the back side of center 2 And between center 2 with the PCB backboards 4 in gap, the piezoelectric element 3 between center 2 and PCB backboards 4, by from The circuit module that the wire that PCB backboards 4 are drawn is connected with the circuit of piezoelectric element 3, wherein, circuit module separates with keyboard.

The face-key pattern of pressing panel 1, pressure transmission to piezoelectric element 3, piezoelectric element 3 produce analog signal, mould Intend signal and circuit module, analog signal warp are transferred to by the wire being connected with the circuit of piezoelectric element 3 drawn from PCB backboards 4 Output drive signal after the processing of oversampling circuit module, drive signal are transferred to piezoelectric element 3 by wire, because inverse piezoelectricity is imitated Should, piezoelectric element 3 produces deformation vibration amount, and vibratory output is transferred to panel 1 and completes touch feedback, above-mentioned tactile by panel 1 The sense of touch impression of feedback analog mechanical button, to give the perception that user has made the press-button actuated of mechanically movable.Also, by Separated in circuit module with keyboard, it is thus possible to effectively reduce the volume of keyboard, meet the trend of keyboard ultrathin development.

Above-mentioned, panel 1, the back side fits in center 2, and front is provided with and the one-to-one pattern of piezoelectric patches.Panel 1 Material be the less plastics of viscous modulus, it is local so as to be more beneficial for increase to be easier to transmit the deformation of piezoelectric patches 3 Haptic feedback effect.And surface of keyboard waterproof can be realized.

It is above-mentioned, PCB backboards 4, front be connected with the back side of center 2, and PCB backboards 4 between center 2 formed with For accommodating the gap of piezoelectric element 3.PCB backboards 4 while the supporting plate as keyboard.

It is above-mentioned, piezoelectric element 3, it is arranged at the back side of center 2 and is corresponded with key legend.And piezoelectric element 3 It is less than the area of key legend in the frontal projected area of panel 1.

In the alternative of the present embodiment, the material of piezoelectric patches includes but is not limited to：Inorganic piezoelectric material, organic piezoelectricity Material or composite piezoelectric material.Inorganic piezoelectric material is preferably piezoelectric ceramics and piezo-electric crystal, and piezoelectric ceramics piezoelectricity is strong, dielectric Constant is high, can be processed into arbitrary shape.Piezo-electric crystal, such as quartz, dielectric constant is low, but stability is good.Organic piezoresistive material Material, such as Kynoar, material is flexible, low-density, Low ESR and high piezoelectric constant.Composite piezoelectric material is inorganic piezoelectric pottery The piezo-electricity composite material that porcelain and organic polymer resin are formed, has both inorganic and organic piezoelectric materials performances.Above-mentioned optional side In case, more preferably, piezoelectric patches is made up of any of ceramics, PVDF (Kynoar) or electrostriction material. More preferably, piezoelectrics are made up of single layer piezoelectric ceramics or multilayer piezoelectric ceramic, are shaped as square, rectangle or circle.

It is above-mentioned, center 2, it is arranged between panel 1 and piezoelectric patches, the middle part of center 2 is provided with fluting, and the four of piezoelectric element 3 It is fixed on the fluting edge of center 2 week,

Further, it is provided with around slotting position multiple for reducing deformation of the center 2 to piezoelectric element 3 about The through hole 21 of beam.Further, through hole 21 is long stripes through hole 21.Further, the quantity of through hole 21 is no less than three, Three through holes 21 are distributed in three sides of piezoelectric element 3 and are not connected to mutually.Further, the quantity of through hole 21 is arranged to four Individual, four through holes 21 are distributed in four sides of piezoelectric element 3, and are mutually not connected to.

Because the position of the corresponding piezoelectric element 3 of center 2 is provided with fluting, and it is provided with around slotting position multiple Through hole 21, the position that piezoelectric element 3 can be fitted between the lower section of through hole 21 of center 2 and fluting, produces in piezoelectric element 3 and shakes In the case of dynamic, because the surrounding of piezoelectric element 3 is fixed by center 2, middle part is in free state, thus vibratory output can be concentrated Surface frame is transferred in middle part, and by middle part.Through hole 21 can be substantially reduced constraint of the metal center 2 to piezoelectric patches deformation so that Piezoelectric patches produces bigger deformation, so as to produce bigger vibrational energy.

Embodiment 2

Present embodiments provide a kind of touch feedback method.

Wherein, comprise the following steps：

Circuit module receives the analog signal as caused by piezoelectric element 3, generates key position signal and drive signal, and will Key position signal is transferred to computer equipment, and drive signal is transferred into piezoelectric element 3；

Piezoelectric element 3 receives drive signal, and vibratory output is produced in the presence of drive signal and vibratory output is transferred into face Plate 1.

In alternative of the present utility model, circuit module is provided with time threshold and voltage threshold, in more detail：

It is more than voltage threshold in the voltage of analog signal, also, when the duration of analog signal exceeding time threshold, Circuit module output drive signal is to piezoelectric element 3.It is not more than voltage threshold in the voltage of analog signal, or, believe in simulation Number duration when being no more than time threshold, circuit module stops output drive signal to piezoelectric element 3.

In alternative of the present utility model：

Analog signal includes the trigger signal as caused by finger pressing panel 1, and is gradually distance from panel 1 by finger and produces Interrupt signal, trigger signal and interrupt signal form continuous waveform signal；

It is more than voltage threshold in the voltage of trigger signal, also, when the duration of trigger signal exceeding time threshold, Circuit module output drive signal is to piezoelectric element 3；When the voltage of trigger signal is more than 0.08v, also, holding when trigger signal When the continuous time is more than 10ms, circuit module output drive signal to piezoelectric element 3.When the voltage of trigger signal is not less than 0.08v, Also, when the duration of trigger signal being not more than 10ms, circuit module not output drive signal to piezoelectric element 3, so as to Effectively avoid due to the generation of invalid drive signal caused by maloperation.

It is more than voltage threshold in the voltage of interrupt signal, also, when the duration of interrupt signal exceeding time threshold, Circuit module output drive signal is to piezoelectric element 3.When the voltage of interrupt signal is more than 0.08v, also, holding when interrupt signal When the continuous time is more than 10ms, circuit module output drive signal to piezoelectric element 3.When the voltage of interrupt signal is not less than 0.08v, Also, when the duration of interrupt signal being not more than 10ms, circuit module not output drive signal to piezoelectric element 3, so as to Effectively avoid due to the generation of invalid drive signal caused by maloperation.

In alternative of the present utility model, circuit module is additionally provided with time interval threshold value, in more detail：

Time interval threshold value is used for：Between the time interval of second of analog signal and first time analog signal exceedes the time When threshold value, judge that second of analog signal is effective.That is, when analog signal time interval caused by each pressing panel 1 exceedes Between interval threshold when, pressing can just be judged as effectively triggering.Specifically：More preferably, time interval threshold value is arranged to 150ms, i.e., when second of analog signal away from the first analog signal time interval more than 150mS when, second analog signal judges For useful signal.

Embodiment 3

Present embodiments provide a kind of touch feedback terminal, including above-mentioned touch feedback keyboard.

Specifically：

Touch feedback keyboard includes：Front be provided with the panel 1 of key legend, the center 2 being connected with the back side of panel 1, It is connected with the back side of center 2 and there is the PCB backboards 4 in gap between center 2, between center 2 and PCB backboards 4 Piezoelectric element 3, the circuit module by being connected from the wire that PCB backboards 4 are drawn with the circuit of piezoelectric element 3, wherein, circuit module Separated with keyboard.The face-key pattern of pressing panel 1, pressure transmission to piezoelectric element 3, piezoelectric element 3 produce trigger signal, Trigger signal is transferred to circuit module, analog signal by the wire being connected with the circuit of piezoelectric element 3 drawn from PCB backboards 4 The output drive signal after the processing of circuit module, drive signal are transferred to piezoelectric element 3 by wire, because inverse piezoelectricity is imitated Should, piezoelectric element 3 produces deformation vibration amount, and vibratory output is transferred to panel 1 and completes touch feedback, above-mentioned tactile by panel 1 The sense of touch impression of feedback analog mechanical button, to give the perception for the press-button actuated that user has made mechanically movable due to circuit Module separates with keyboard, it is thus possible to effectively reduces the volume of keyboard, meets the trend of keyboard ultrathin development.

Finally it should be noted that：Various embodiments above is only to illustrate the technical solution of the utility model, rather than it is limited System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should Understand：It can still modify to the technical scheme described in foregoing embodiments, either to which part or whole Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly The scope of each embodiment technical scheme of type.

Claims

A kind of 1. touch feedback keyboard, it is characterised in that including：

Front is provided with the panel of key legend, the center being connected with the back side of the panel, is connected with the back side of the center And with the PCB backboards in the gap, piezoelectric patches between the center and the PCB backboards, logical between the center The circuit module that the wire drawn from PCB backboards is connected with the piezoelectric patches circuit is crossed, wherein, the circuit module and keyboard point From.
2. touch feedback keyboard according to claim 1, it is characterised in that

The center be fitted with around the position of the piezoelectric patches be provided with it is multiple be used for reduce deformation of the center to piezoelectric patches The through hole of constraint.
3. touch feedback keyboard according to claim 2, it is characterised in that

The through hole is long stripes through hole.
4. touch feedback keyboard according to claim 3, it is characterised in that

The quantity of the through hole is no less than three, and three through holes are distributed in three sides of the piezoelectric patches and do not connected mutually Connect.
5. touch feedback keyboard according to claim 1, it is characterised in that

The piezoelectric patches corresponds with the key legend, and the piezoelectric patches is less than in the frontal projected area of the panel The area of key legend.
6. touch feedback keyboard according to claim 1, it is characterised in that

The material of the piezoelectric patches is one kind in electrodeless piezoelectric, organic piezoelectric materials or composite piezoelectric material.
7. touch feedback keyboard according to claim 1, it is characterised in that

The piezoelectric patches is single layer piezoelectric potsherd or multilayer piezoelectric ceramic piece.
8. touch feedback keyboard according to claim 1, it is characterised in that

The material of the center is metal.
9. touch feedback keyboard according to claim 1, it is characterised in that

The material of the panel is plastics.
10. a kind of touch feedback terminal, it is characterised in that including the touch feedback keyboard as described in claim any one of 1-9.