Virtual key device of intelligent interaction panel and intelligent interaction panel

Abstract

The invention relates to the field of intelligent interactive tablets, and discloses a virtual key device of an intelligent interactive tablet and the intelligent interactive tablet. The virtual key device of the intelligent interaction panel comprises a frame, a pressure sensor, an actuator and a bracket, the frame is fixedly connected with the bracket; the front side of the frame is provided with a key area, and a thinning area is formed at the back side position corresponding to the key area on the front side of the frame; the pressure sensor is coupled to the thinned area; the actuator comprises a first connecting shaft and an actuator rear shell, one end face of the actuator is coupled with the thinning area through the first connecting shaft, and the other end face of the actuator is coupled with the support through the actuator rear shell and fixedly connected to the back face of the frame through the support. Therefore, obvious local vibration tactile feedback is only generated in the key area, vibration cannot be transmitted to the whole machine, obvious vibration radiation noise generated by a screen module and a back plate of the whole machine is avoided, trepanning on a frame is avoided, and the appearance attractiveness and dustproof and waterproof performance of the whole machine are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent interactive tablets, and particularly to a virtual key device for an intelligent interactive tablet and an intelligent interactive tablet. Background Art

[0002] In some large-sized intelligent interactive tablets, mechanical keys including a power key and a volume adjustment key are essential interactive tools, which can provide users with information confirmation input and tactile feedback. Since these mechanical keys are usually deployed on the aluminum extrusion bezel of the intelligent interactive tablet, therefore, the deployment of multiple mechanical keys inevitably requires the aluminum extrusion bezel to be drilled and processed, and then the mechanical key module structure is embedded therein. Therefore, there must be obvious key gaps between the two, resulting in the discontinuity and ugliness of the appearance of the intelligent interactive tablet, affecting the integrated appearance of the intelligent interactive tablet product, and reducing the dust and water resistance of the product. Summary of the Invention

[0003] Embodiments of the present invention aim to provide a virtual key device for an intelligent interactive tablet and an intelligent interactive tablet, which can solve the problems that the mechanical keys of the existing intelligent interactive tablets cause the discontinuity and ugliness of the appearance of the intelligent interactive tablets, affect the integrated appearance of the intelligent interactive tablet products, and reduce the dust and water resistance of the products.

[0004] To solve the above technical problems, a first aspect embodiment of the present invention provides a virtual key device for an intelligent interactive tablet, including a bezel, a pressure sensor, an actuator, and a bracket; wherein:

[0005] The bezel is fixedly connected to the bracket together;

[0006] A key area is provided on the front surface of the bezel, and the corresponding back position of the key area on the front surface of the bezel is thinned to form a thinned area;

[0007] The pressure sensor is coupled to the thinned area;

[0008] The actuator includes a first connecting shaft and an actuator rear shell. One end surface of the actuator is coupled to the thinned area through the first connecting shaft, and the other end surface of the actuator is coupled to the bracket through the actuator rear shell and is fixedly connected to the back surface of the bezel through the bracket.

[0009] Optionally, the bezel includes a first threaded hole, and the bezel is fixedly connected to the bracket together by using screws through the first threaded hole.

[0010] Optionally, the virtual key device of the intelligent interactive flat panel further includes a flexible damping layer; the geometric center area of the thinning area is an adhesive surface, and the adhesive surface is coupled to the end surface of the first connecting shaft of the actuator through the flexible damping layer.

[0011] Optionally, the virtual key device of the intelligent interactive flat panel further includes a display module, and the display module is fixedly installed on the back surface of the frame.

[0012] Optionally, the actuator of the invention includes a mover part and a stator part; wherein:

[0013] The mover part includes a first connecting shaft, and the mover part is coupled to the thinning area of the frame through the first connecting shaft;

[0014] The stator part includes an actuator rear shell, and the stator part is coupled to the bracket through the actuator rear shell.

[0015] Optionally, the mover part further includes a first permanent magnet, a second permanent magnet, a first magnetic conductive plate, a second magnetic conductive plate, a third magnetic conductive plate and a magnetic conductive ring; wherein: the end surfaces of the first permanent magnet and the second permanent magnet are spaced apart by the second magnetic conductive plate, the opposite two magnetic pole polarities of the first permanent magnet and the second permanent magnet are the same, the other end surfaces of the first permanent magnet and the second permanent magnet are respectively arranged on the first magnetic conductive plate and the third magnetic conductive plate, and the magnetic conductive ring is arranged between the first magnetic conductive plate and the third magnetic conductive plate.

[0016] Optionally, the stator part further includes an actuator housing, a coil and a coil bracket; a through hole is provided on the magnetic conductive ring, the coil is arranged between the magnetic conductive ring and the first permanent magnet and the second permanent magnet, and is fixedly connected to the actuator housing through the through hole of the magnetic conductive ring by the coil bracket.

[0017] Optionally, the mover part includes a second connecting shaft and a third connecting shaft; the third connecting shaft is arranged on one end surface of the third magnetic conductive plate; the stator part further includes an actuator front shell, the first connecting shaft and the second connecting shaft are arranged on one end surface of the first magnetic conductive plate, a first elastic member is arranged between the second connecting shaft and the first connecting shaft, the outer edge of the first elastic member is fixedly connected to the actuator housing and the actuator front shell, and the actuator front shell is provided with a through hole for the first connecting shaft to pass through.

[0018] Optionally, a second elastic member is arranged on the third connecting shaft, and the outer edge of the second elastic member is fixedly connected to the actuator housing and the actuator rear shell.

[0019] Accordingly, an embodiment of the second aspect of the present invention provides an intelligent interactive tablet, which includes the virtual key device and the processing module of the intelligent interactive tablet according to the embodiment of the first aspect of the present invention, and the virtual key device of the intelligent interactive tablet is electrically connected to the processing module.

[0020] Compared with the prior art, the present invention provides a virtual key device and an intelligent interactive tablet for an intelligent interactive tablet. The virtual key device of the intelligent interactive tablet includes a frame, a pressure sensor, an actuator, and a bracket; wherein: a key area is provided on the front surface of the frame, and the corresponding back position of the key area on the front surface of the frame is thinned to form a thinned area; the pressure sensor is coupled to the thinned area; one end surface of the actuator is coupled to the thinned area through a first connecting shaft, and the electromagnetic force generated by the actuator acts on the thinned area through the first connecting shaft, causing the thinned area to deform and generate local vibration; the other end surface of the actuator is coupled to the bracket through the actuator rear shell and is fixedly connected to the back surface of the frame through the bracket. At the same time, the reverse electromagnetic force received by the actuator also acts on the back surface of the frame through the bracket, so that the frame receives electromagnetic forces in opposite directions at the same time, and the equivalent resultant force received by the frame is zero. Therefore, the virtual key device of the intelligent interactive tablet will only generate obvious local vibration tactile feedback in the key area, will not transmit force and vibration to the outside, and will not transmit vibration to the whole machine, avoiding obvious vibration radiation noise generated by the screen module and the backplane of the whole machine. In addition, the virtual key device of the intelligent interactive tablet also avoids opening holes in the frame structure, improving the appearance beauty and dust and water resistance of the whole machine. Thereby, it can solve the problems that the mechanical keys of the existing intelligent interactive tablet cause discontinuity and ugliness of the appearance of the intelligent interactive tablet, affect the integrated appearance of the intelligent interactive tablet product, reduce the dust and water resistance of the product, and at the same time, when realizing the vibration tactile feedback in the key area, the vibration is transmitted to the whole machine structure through the frame structure, causing obvious noise in the screen glass and the backplane of the whole machine. Description of the Drawings

[0021] One or more embodiments are exemplarily illustrated by the pictures in the corresponding drawings. These exemplary illustrations do not limit the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, unless otherwise stated, and the drawings in the drawings do not constitute a proportional limitation.

[0022] Figure 1 is a schematic exploded view of the structure of a virtual key device for an intelligent interactive tablet provided by the present invention;

[0023] Figure 2 is a schematic view of the structure of the back surface of the frame in a virtual key device for an intelligent interactive tablet provided by the present invention;

[0024] Figure 3 It is a schematic cross-sectional view of a virtual key device of an intelligent interactive tablet provided by the present invention;

[0025] Figure 4 It is a schematic cross-sectional view of an actuator in a virtual key device of an intelligent interactive tablet provided by the present invention;

[0026] Figure 5 It is a schematic structural view of an intelligent interactive tablet provided by the present invention.

[0027] Description of main component symbols:

[0028] Virtual key device 1 of intelligent interactive tablet Frame 11

[0029] First threaded hole 111 Second threaded hole 112

[0030] Third threaded hole 113 Key area 114

[0031] Thinning area 115 Bonding surface 116

[0032] Pressure sensor 12 Actuator 13

[0033] First connecting shaft 1311 Second connecting shaft 1312

[0034] Third connecting shaft 1313 First magnet 1314

[0035] Second magnet 1315 First magnetic guide plate 1316

[0036] Second magnetic guide plate 1317 Third magnetic guide plate 1318

[0037] Magnetic guide ring 1319 Actuator rear shell 1321

[0038] Actuator outer shell 1322 Coil 1323

[0039] Coil bracket 1324 Actuator front shell 1325

[0040] First elastic member 1331 Second elastic member 1332

[0041] Bracket 14 Flexible damping layer 15

[0042] Intelligent interactive tablet 100 Processing module 2 Detailed implementation manners

[0043] To facilitate the understanding of the present invention, the present invention will be described in more detail below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is expressed as "fixed to" another element, it can be directly on the other element, or there can be one or more intermediate elements therebetween. When an element is expressed as "connected to" another element, it can be directly connected to the other element, or there can be one or more intermediate elements therebetween. The terms "upper", "lower", "inner", "outer", "bottom", etc. used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0044] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in this specification in the description of the present invention are only for the purpose of describing specific embodiments and are not used to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0045] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0046] In some large-sized intelligent interactive tablets, mechanical buttons including power buttons and volume adjustment buttons are essential interactive tools, which can provide information confirmation input and tactile feedback for users. Since these mechanical buttons are usually deployed on the aluminum extrusion surface frame of the appearance of the intelligent interactive tablet, therefore, the deployment of multiple mechanical buttons inevitably requires opening holes in the aluminum extrusion surface frame of the appearance, and then embedding the mechanical button module structure therein. Therefore, there must be obvious button gaps between the two, resulting in the discontinuity and ugliness of the appearance of the intelligent interactive tablet, affecting the integrated appearance of the intelligent interactive tablet product, and reducing the dust and water resistance of the product. In addition, in the overall machine assembly structure, the aluminum extrusion surface frame of the appearance is often mechanically fixed to the overall machine screen glass and the backplane structure through structures such as light filtering strips and pressing blocks, resulting in that while realizing the vibration tactile feedback in the button area, the vibration is transmitted to the overall machine structure through the frame structure, causing obvious noise in the overall machine screen glass and the backplane.

[0047] To address the above-mentioned technical problems discovered during the R & D process, an embodiment of the present application provides a virtual key device for an intelligent interactive tablet, which has pressure detection and vibration feedback, and includes a frame, a pressure sensor, an actuator, and a bracket; wherein: a key area is provided on the front surface of the frame, and the position on the back corresponding to the key area on the front surface of the frame is thinned to form a thinned area; the pressure sensor is coupled to the thinned area; one end surface of the actuator is coupled to the thinned area through a first connecting shaft, and the electromagnetic force generated by the actuator acts on the thinned area through the first connecting shaft, causing the thinned area to deform and thus generating local vibration; the other end surface of the actuator is coupled to the bracket through the actuator rear shell and is fixedly connected to the back surface of the frame through the bracket. At the same time, the reverse electromagnetic force received by the actuator also acts on the back surface of the frame through the bracket, such that the frame receives electromagnetic forces in opposite directions simultaneously, making the equivalent resultant force received by the frame zero. Therefore, the virtual key device of the intelligent interactive tablet will only generate obvious local vibration tactile feedback in the key area, will not transmit force and vibration to the outside, and will not transmit vibration to the entire machine, avoiding causing obvious vibration radiation noise in the screen module and backplane of the entire machine. In addition, the virtual key device of the intelligent interactive tablet also avoids opening holes in the frame structure, increasing the aesthetic appearance and dust and water resistance of the entire machine. Thus, it can solve the problems that the mechanical keys of existing intelligent interactive tablets cause discontinuity and unsightliness in the appearance of the intelligent interactive tablet, affect the integrated appearance of the intelligent interactive tablet product, reduce the dust and water resistance of the product, and at the same time, when realizing vibration tactile feedback in the key area, the vibration is transmitted to the entire machine structure through the frame structure, causing obvious noise in the screen glass and backplane of the entire machine.

[0048] To facilitate the understanding of the above inventive concept of the present invention, the following provides a more detailed description of the above inventive concept of the present invention in conjunction with the accompanying drawings and specific embodiments.

[0049] In one embodiment, as Figures 1 to 3 shown, the present invention provides a virtual key device for an intelligent interactive tablet. The virtual key device 1 of the intelligent interactive tablet includes: a frame 11, a pressure sensor 12, an actuator 13, and a bracket 14; wherein:

[0050] The frame 11 is fixedly connected to the bracket 14 together;

[0051] A key area 114 is provided on the front surface of the frame 11, and the position on the back corresponding to the key area 114 on the front surface of the frame 11 is thinned to form a thinned area 115;

[0052] The pressure sensor 12 is coupled to the thinned area 115;

[0053] The actuator 13 includes a first connecting shaft 1311 and an actuator rear housing 1321. One end face of the actuator 13 is coupled to the thinning area 115 through the first connecting shaft 1311, and the other end face of the actuator 13 is coupled to the bracket 14 through the actuator rear housing 1321 and is fixedly connected to the back surface of the frame 11 through the bracket 14.

[0054] The electromagnetic force generated by the actuator 13 acts on the thinning area 115 through the first connecting shaft 1311, causing the thinning area 115 to deform and generate local vibration. At the same time, the reverse electromagnetic force received by the actuator 13 also acts on the back surface of the frame 11 through the bracket 14, causing the frame 11 to receive electromagnetic forces in opposite directions simultaneously, so that the equivalent resultant force received by the frame 11 is zero. Therefore, no force and vibration are transmitted to the outside, and vibration noise generated by the whole machine backplane and the screen module can be avoided.

[0055] In this embodiment, a virtual key device for an intelligent interactive flat panel is provided, including a frame, a pressure sensor, an actuator, and a bracket. Among them: a key area is provided on the front surface of the frame, and the position corresponding to the back surface of the key area on the front surface of the frame is thinned to form a thinning area; the pressure sensor is coupled to the thinning area; one end face of the actuator is coupled to the thinning area through a first connecting shaft, and the electromagnetic force generated by the actuator acts on the thinning area through the first connecting shaft, causing the thinning area to deform and generate local vibration; the other end face of the actuator is coupled to the bracket through the actuator rear housing and is fixedly connected to the back surface of the frame through the bracket. At the same time, the reverse electromagnetic force received by the actuator also acts on the back surface of the frame through the bracket, causing the frame to receive electromagnetic forces in opposite directions simultaneously, so that the equivalent resultant force received by the frame is zero. Therefore, the virtual key device of the intelligent interactive flat panel will only generate obvious local vibration tactile feedback in the key area, will not transmit force and vibration to the outside, will not transmit vibration to the whole machine, and can avoid obvious vibration radiation noise generated by the whole machine screen module and the backplane. In addition, the virtual key device of the intelligent interactive flat panel also avoids opening holes in the frame structure, improving the aesthetics and dust and water resistance of the whole machine. Thereby, the problems that the mechanical keys of the existing intelligent interactive flat panel cause discontinuity and ugliness of the appearance of the intelligent interactive flat panel, affect the integrated appearance of the intelligent interactive flat panel product, reduce the dust and water resistance of the product, and at the same time of realizing vibration tactile feedback in the key area, the vibration is transmitted to the whole machine structure through the frame structure, causing obvious noise in the whole machine screen glass and the backplane can be solved.

[0056] In one embodiment, as Figure 1 and Figure 2 shown, a key area 114 is provided on the front surface of the frame 11, and the position corresponding to the back surface of the key area 114 on the front surface of the frame 11 is thinned to form a thinning area 115.

[0057] Specifically, the frame 11 can be integrally formed by extrusion using an aluminum alloy material through a mold.

[0058] A key area 114 is provided on the front surface of the frame 11, and the position of the key area 114 can be marked by making a mark on the front surface of the frame 11.

[0059] Thinning processing is performed on the position corresponding to the back surface of the key area 114 on the front surface of the frame 11 to form a thinning area 115 for providing a local stiffness area compared to the overall frame of the machine; the geometric center area of the thinning area 115 is an adhesive surface 116.

[0060] In this embodiment, by providing a key area on the front surface of the frame and performing thinning processing on the position corresponding to the back surface of the key area on the front surface of the frame to form a thinning area, it is possible to avoid opening holes in the frame, and there is no gap at the position of the key area, ensuring the aesthetic appearance and dust and water resistance of the intelligent interactive flat panel product while also realizing the function of the key switch, which is different from the prior art where the key switch needs to be installed by opening holes on the appearance of the aluminum extrusion frame, and there are key gaps on the appearance, resulting in discontinuity and non-aesthetic appearance of the intelligent interactive flat panel, affecting the integrated appearance of the intelligent interactive flat panel product and reducing the dust and water resistance of the product.

[0061] In one embodiment, the frame 11 is fixedly connected to the bracket 14 together.

[0062] Specifically, as Figure 2 shown, it is a schematic structural diagram of the back surface of the frame. In Figure 2 it, the frame 11 includes a first threaded hole 111, and the frame is fixedly connected to the bracket 14 using screws through the first threaded hole 111.

[0063] Furthermore, as Figure 2 shown, the frame 11 further includes a second threaded hole 112 and a third threaded hole 113; the frame 11 is mechanically connected to the backplane of the whole machine through the second threaded hole 112; the frame 11 is connected to the pressing block through the third threaded hole 113, and the light filtering strip is embedded in the frame 11 and then connected to the screen module together.

[0064] In one embodiment, the virtual key device 1 of the intelligent interactive flat panel further includes a fixing component (not shown). The pressure sensor 12 is coupled to the thinning area 115. Specifically, the pressure sensor 12 is coupled to the thinning area 115 through the fixing component.

[0065] For example, the fixing component is glue, and the pressure sensor 12 is adhesively coupled to the thinning area 115 through the glue, so that the pressure sensor 12 can be more firmly coupled to the thinning area 115 through the glue adhesion method.

[0066] The pressure sensor 12 is used to detect the bending strain generated in the thinning area 115 when the user presses on the key area 114, thereby realizing the function of detecting the pressing force.

[0067] When the user touches and presses on the key area 114, the pressure sensor 12 can detect the bending strain generated in the thinning area 115 and output a pressure value voltage signal. By performing algorithm control on the pressure value voltage signal, the function of detecting the pressing force can be realized.

[0068] For example, the pressure sensor 12 is coupled to the thinning area 115, and the other end of the pressure sensor 12 is electrically connected to a processing module. The position of the thinning area 115 corresponds to the key area 114 provided on the front of the frame. When the key area 114 is touched and pressed with a pressing force, the pressing force will cause the thinning area 115 to generate a bending strain. When the user touches and presses on the key area 114, the pressure sensor 12 can detect the bending strain generated in the thinning area 115, output a pressure value voltage signal, and output the pressure value voltage signal to the processing module. The processing module determines whether the pressure value exceeds a preset pressure threshold. When the pressure value exceeds the preset pressure threshold, a control signal is output to the actuator 13 to control the actuator 13 to generate an electromagnetic force. The electromagnetic force generated by the actuator 13 acts on the thinning area 115 through the first connecting shaft 1311, causing the thinning area 115 to deform and generate local vibration. At the same time, the reverse electromagnetic force received by the actuator 13 also acts on the back of the frame through the bracket 14, so that the frame 11 is simultaneously subjected to electromagnetic forces in opposite directions, and the equivalent resultant force received by the frame 11 is zero. Therefore, no force and vibration are transmitted to the outside, and thus vibration noise generated by the whole machine backplane and the screen module can be avoided. Among them, the preset pressure threshold can be one or multiple, and the number value of the preset pressure threshold can be set according to needs. When there are multiple preset pressure thresholds, the actuator 13 can also be correspondingly set with multiple vibration modes to generate different vibration amplitudes and vibration frequencies according to the control instructions output by the processing module, which can be specifically set according to actual needs.

[0069] For example, the pressure sensor 12 for detecting the pressing force can include a resistive strain pressure sensor or a piezoelectric ceramic pressure sensor.

[0070] In this embodiment, by coupling the pressure sensor to the thinning area, when the user touches and presses on the key area, the pressure sensor can detect the bending strain generated in the thinning area and output a pressure value voltage signal. By performing algorithm control on the pressure value voltage signal, the function of detecting the pressing force can be realized.

[0071] In one embodiment, asFigure 3 and Figure 4 As shown in Figure 4 , the actuator 13 includes a first connecting shaft 1311 and an actuator rear housing 1321. One end face of the actuator 13 is coupled to the thinning area 115 through the first connecting shaft 1311, and the other end face of the actuator 13 is coupled to the bracket 14 through the actuator rear housing 1321 and fixedly connected to the back surface of the frame 11 through the bracket 14.

[0072] Specifically, as Figure 4 shown in Figure 4 , the actuator 13 includes a rotor part and a stator part. The rotor part includes a first connecting shaft 1311, and the rotor part is coupled to the thinning area 115 of the frame 11 through the first connecting shaft 1311; the stator part includes an actuator rear housing 1321, and the stator part is coupled to the bracket 14 through the actuator rear housing 1321.

[0073] When the rotor part receives the control signal output by the processing module, an electromagnetic force is generated. The electromagnetic force acts on the thinning area 115 through the first connecting shaft 1311, causing the thinning area 115 to deform and then generating local vibration. At the same time, the reverse electromagnetic force received by the actuator 13 also acts on the back surface of the frame 11 through the bracket 14, so that the frame 11 receives electromagnetic forces in opposite directions at the same time, making the equivalent resultant force received by the frame 11 zero. Therefore, no force and vibration are transmitted to the outside, and thus vibration noise generated by the whole machine backplane and the screen module can be avoided.

[0074] Furthermore, as Figure 4 shown in Figure 4 , the rotor part further includes a first magnet 1314, a second magnet 1315, a first magnetic conductive plate 1316, a second magnetic conductive plate 1317, a third magnetic conductive plate 1318 and a magnetic conductive ring 1319; wherein, the end faces of the first magnet 1314 and the second magnet 1315 are spaced apart by the second magnetic conductive plate 1317, and the opposite two magnetic poles of the first magnet 1314 and the second magnet 1315 have the same polarity, such as both being N poles or S poles. The other end faces of the first magnet 1314 and the second magnet 1315 are respectively disposed on the first magnetic conductive plate 1316 and the third magnetic conductive plate 1318, and a magnetic conductive ring 1319 is disposed between the first magnetic conductive plate 1316 and the third magnetic conductive plate 1318, so that the first magnet 1314, the second magnet 1315, the first magnetic conductive plate 1316, the second magnetic conductive plate 1317, the third magnetic conductive plate 1318 and the magnetic conductive ring 1319 form a complete magnetic flux loop.

[0075] Furthermore, as Figure 4As shown, the stator part further includes an actuator housing 1322, a coil 1323, and a coil bracket 1324; the magnetic conductive ring 1319 is provided with a through hole, the coil 1323 is disposed between the magnetic conductive ring 1319, the first magnet 1314, and the second magnet 1315, and is fixedly connected to the actuator housing 1322 through the through hole of the magnetic conductive ring 1319 by the coil bracket 1324; the magnetic induction lines in the magnetic flux loop vertically pass through the coil, thereby generating electromagnetic forces in opposite axial directions on the rotor part and the stator part.

[0076] Further, as Figure 4 shown, the rotor part includes a second connecting shaft 1312 and a third connecting shaft 1313. The stator part further includes an actuator front housing 1325. One end face of the first magnetic conductive plate 1316 is provided with a first connecting shaft 1311 and a second connecting shaft 1312. A first elastic member 1331 is disposed between the second connecting shaft 1312 and the first connecting shaft 1311. The outer edge of the first elastic member 1331 is fixedly connected to the actuator housing 1322 and the actuator front housing 1325. The actuator front housing 1325 is provided with a through hole for the first connecting shaft 1311 to pass through.

[0077] One end face of the third magnetic conductive plate 1318 is provided with a third connecting shaft 1313. A second elastic member 1332 is disposed on the third connecting shaft 1313. The outer edge of the second elastic member 1332 is fixedly connected to the actuator housing 1322 and the actuator rear housing 1321.

[0078] In order to improve the assemblability and modularity of the actuator structure, the first elastic member 1331 and the second elastic member 1332 are introduced between the stator part and the rotor part. At this time, it is equivalent to paralleling two axial bending stiffnesses on the basis of the bending stiffness of the thinning region 115. Therefore, the axial bending stiffnesses of the first elastic member 1331 and the second elastic member 1332 need to be designed as small as possible.

[0079] In this embodiment, when the user touches and presses on the key area with a certain pressing force, the pressing force causes bending strain to occur in the thinning area. The bending strain generated in the thinning area is detected by the pressure sensor and a pressure value voltage signal is output to the processing module. The processing module determines whether the pressure value exceeds a preset pressure threshold. When the pressure value exceeds the preset pressure threshold, a control signal is output to the actuator. When the mover part of the actuator receives the control signal output by the processing module, an electromagnetic force is generated. This electromagnetic force acts on the thinning area through the first connecting shaft, causing the thinning area to deform and thus generating local vibration. At the same time, the reverse electromagnetic force received by the stator part also acts on the back of the frame through the bracket, so that the frame receives electromagnetic forces in opposite directions at the same time, making the equivalent resultant force received by the frame zero. Therefore, no force and vibration are transmitted to the outside, and thus vibration noise generated by the whole machine backplane and the screen module can be avoided. Among them, the preset pressure threshold can be one or multiple, and the numerical value of the number of preset pressure thresholds can be set as needed. And when there are multiple preset pressure thresholds, the actuator can also be correspondingly set with multiple vibration modes, generating different vibration amplitudes and vibration frequencies according to the control instructions output by the processing module, which can be specifically set according to actual needs.

[0080] In one embodiment, as Figure 3 shown, the virtual key device 1 of the intelligent interactive flat panel further includes a flexible damping layer 15. The geometric center area of the thinning area 115 is an adhesive surface 116, and the adhesive surface 116 is coupled to the end surface of the first connecting shaft 1311 of the actuator 13 through the flexible damping layer 15.

[0081] Specifically, the functions of the flexible damping layer 15 include: First, since the end surface of the first connecting shaft 1311 is small, it can better ensure the coupling reliability between the adhesive surface 116 of the thinning area 115 and the end surface of the first connecting shaft 1311. Second, it increases the damping on the vibration transmission path so that the start and stop of transient vibration can be controlled more quickly.

[0082] For example, the material of the flexible damping layer 15 can be various types of silicone rubbers, or it can be foam or 3M VHB double-sided tape.

[0083] In one embodiment, the virtual key device 1 of the intelligent interactive flat panel further includes a display module (not shown), and the display module is fixedly installed on the back surface of the frame 11. Specifically, the display module is fixedly installed on the back surface of the frame 11 by adhesion.

[0084] Among them, the display module can be a light-emitting device with a small size such as a light-emitting diode (LED). By arranging the display module on the back of the frame, it can be used as a key identifier, increasing the aesthetic appearance and personalization of the virtual key device 1 of the intelligent interactive flat panel.

[0085] The virtual key device 1 of the intelligent interaction tablet provided by the present invention has functions of pressure detection and vibration feedback, and its specific working process is as follows:

[0086] When the user touches and presses in the key area 114 with a certain pressing force, a bending strain is generated in the thinning area 115 at the back position of the corresponding frame of the key area 114. The bending strain generated in the thinning area 115 is detected by the pressure sensor 12 coupled to the thinning area 115 and a pressure value voltage signal is output to the processing module. The processing module determines whether the pressure value exceeds a preset pressure threshold, and when the pressure value exceeds the preset pressure threshold, a control signal is output to the actuator 13. The mover part of the actuator 13 generates an electromagnetic force when receiving the control signal output by the processing module. The electromagnetic force acts on the thinning area 115 through the first connecting shaft 1311, causing the thinning area 115 to deform and then generating local vibration to produce a tactile feedback effect and enhance the user experience. At the same time, the reverse electromagnetic force received by the stator part of the actuator 13 also acts on the back of the frame through the bracket 14, so that the frame 11 receives electromagnetic forces in opposite directions at the same time, making the equivalent resultant force received by the frame 11 zero. The virtual key device 1 of the intelligent interaction tablet will only generate obvious local vibration tactile feedback in the key area 114, will not transmit force and vibration to the outside, and will not transmit vibration to the whole machine, thus avoiding obvious vibration radiation noise generated by the screen module and the backplane of the whole machine.

[0087] Based on the same concept, as Figure 5 shown, the present invention also provides an intelligent interaction tablet. The intelligent interaction tablet 100 includes the virtual key device 1 of the intelligent interaction tablet described in any of the above embodiments and a processing module 2. The virtual key device 1 of the intelligent interaction tablet is electrically connected to the processing module 2; wherein:

[0088] The virtual key device 1 of the intelligent interaction tablet is used to detect the pressing force applied by the user in the key area 114 and output a pressure value voltage signal to the processing module 2.

[0089] The processing module 2 is configured to determine whether the pressure value transmitted by the virtual key device 1 of the intelligent interactive flat panel exceeds a preset pressure threshold, and output a control signal to the actuator 13 in the virtual key device 1 of the intelligent interactive flat panel when the pressure value exceeds the preset pressure threshold; the actuator 13 in the virtual key device 1 of the intelligent interactive flat panel generates corresponding vibrations according to the control signal output by the processing module, drives the key area 114 to generate bending vibrations, so as to generate a haptic feedback effect and enhance the user experience; at the same time, the reverse electromagnetic force received by the actuator 13 also acts on the back of the frame through the bracket 14, so that the frame 11 receives electromagnetic forces in opposite directions at the same time, making the equivalent resultant force received by the frame 11 zero. The virtual key device 1 of the intelligent interactive flat panel will only generate obvious local vibration haptic feedback in the key area, will not transmit force and vibration to the outside, and will not transmit vibration to the whole machine, thereby avoiding obvious vibration radiation noise generated by the whole machine screen module and the backplane.

[0090] In this embodiment, the virtual key device 1 of the intelligent interactive flat panel is the same as the virtual key device 1 of the intelligent interactive flat panel described in any of the above embodiments. The specific structure and function can refer to the virtual key device 1 of the intelligent interactive flat panel described in any of the above embodiments, and will not be elaborated here.

[0091] The processing module 2 has data processing capabilities and signal processing capabilities and can be an integrated circuit chip. For example, the processing module 2 can be a general-purpose processor, a DSP (Digital Signal Processor), an FPGA (Field Programmable Gate Array), or other programmable logic devices, etc. The general-purpose processor can be a microprocessor, an MCU (Microcontroller Unit), or any conventional processor, etc.

[0092] In this embodiment, by providing an intelligent interactive flat panel, including a virtual key device and a processing module of the intelligent interactive flat panel, the virtual key device of the intelligent interactive flat panel is electrically connected to the processing module; wherein: the virtual key device of the intelligent interactive flat panel is used to detect the pressing force applied by the user on the key area and output a pressure value voltage signal to the processing module. The processing module is used to judge whether the pressure value transmitted by the virtual key device of the intelligent interactive flat panel exceeds a preset pressure threshold, and output a control signal to the actuator in the virtual key device of the intelligent interactive flat panel when the pressure value exceeds the preset pressure threshold; the actuator in the virtual key device of the intelligent interactive flat panel generates corresponding vibrations according to the control signal output by the processing module, drives the key area to generate bending vibrations, so as to generate a tactile feedback effect and enhance the user experience; at the same time, the reverse electromagnetic force received by the actuator also acts on the back of the frame through the bracket, so that the frame receives electromagnetic forces in opposite directions at the same time, making the equivalent resultant force received by the frame zero. The virtual key device of the intelligent interactive flat panel will only generate obvious local vibration tactile feedback in the key area, will not transmit force and vibration to the outside, and will not transmit vibration to the whole machine, thereby avoiding obvious vibration radiation noise caused by the whole machine screen module and the backplane. Further, the virtual key device of the intelligent interactive flat panel includes: a frame, a pressure sensor, an actuator and a bracket; wherein: a key area is arranged on the front of the frame, and the position corresponding to the back of the key area on the front of the frame is thinned to form a thinned area; the pressure sensor is coupled to the thinned area; one end surface of the actuator is coupled to the thinned area through a first connecting shaft, and the electromagnetic force generated by the actuator acts on the thinned area through the first connecting shaft, causing the thinned area to deform and generate local vibrations; the other end surface of the actuator is coupled to the bracket through the actuator rear shell and is fixedly connected to the back of the frame through the bracket. At the same time, the reverse electromagnetic force received by the actuator also acts on the back of the frame through the bracket, so that the frame receives electromagnetic forces in opposite directions at the same time, making the equivalent resultant force received by the frame zero. Therefore, the virtual key device will only generate obvious local vibration tactile feedback in the key area, will not transmit force and vibration to the outside, and will not transmit vibration to the whole machine, avoiding obvious vibration radiation noise caused by the whole machine screen module and the backplane. In addition, the virtual key device of the intelligent interactive flat panel also avoids opening holes in the frame structure, increasing the aesthetic appearance and dust and water resistance of the whole machine. Thereby, it can solve the problems that the mechanical keys of the existing intelligent interactive flat panel cause discontinuity and ugliness of the appearance of the intelligent interactive flat panel, affect the integrated appearance of the intelligent interactive flat panel product, reduce the dust and water resistance of the product, and at the same time, when realizing the vibration tactile feedback in the key area, the vibration is transmitted to the whole machine structure through the frame structure, causing obvious noise in the whole machine screen glass and the backplane.

[0093] It should be noted that the above embodiments of the intelligent interactive flat panel and the embodiments of the virtual key device of the intelligent interactive flat panel belong to the same concept. For the specific implementation process, please refer to the embodiments of the virtual key device of the intelligent interactive flat panel. Moreover, the technical features in the embodiments of the virtual key device of the intelligent interactive flat panel are correspondingly applicable to the above embodiments of the intelligent interactive flat panel, and will not be elaborated here.

[0094] It should be noted that in this text, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including such element.

[0095] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; under the idea of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and the steps can be implemented in any order, and there are many other variations in different aspects of the present invention as described above. For the sake of brevity, they are not provided in detail; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A virtual key device for an intelligent interactive flat panel, characterized in that It includes a frame, a pressure sensor, an actuator and a bracket; wherein: The frame is fixedly connected to the bracket; A key area is provided on the front surface of the frame, and the corresponding position on the back surface of the key area on the front surface of the frame is thinned to form a thinned area; The pressure sensor is coupled to the thinned area; The actuator includes a first connecting shaft and an actuator rear shell. One end surface of the actuator is coupled to the thinned area through the first connecting shaft, and the other end surface of the actuator is coupled to the bracket through the actuator rear shell and is fixedly connected to the back surface of the frame through the bracket.

2. The virtual key device of the intelligent interactive flat panel according to claim 1, wherein The frame includes a first threaded hole, and the frame is fixedly connected to the bracket by using screws through the first threaded hole.

3. The virtual key device of the intelligent interactive flat panel according to claim 1, characterized in that The virtual key device of the intelligent interactive flat panel further includes a flexible damping layer; the geometric center area of the thinned area is an adhesive surface, and the adhesive surface is coupled to the end surface of the first connecting shaft of the actuator through the flexible damping layer.

4. The virtual key device of the intelligent interactive flat panel according to claim 1, characterized in that, The virtual key device of the intelligent interactive flat panel further includes a display module, and the display module is fixedly installed on the back surface of the frame.

5. The virtual key device of the intelligent interactive flat panel according to claim 1, characterized in that, The actuator includes a mover part and a stator part; wherein: The mover part includes a first connecting shaft, and the mover part is coupled to the thinned area of the frame through the first connecting shaft; The stator part includes an actuator rear shell, and the stator part is coupled to the bracket through the actuator rear shell.

6. The virtual key device of the intelligent interactive flat panel according to claim 5, characterized in that, The mover part further includes a first permanent magnet, a second permanent magnet, a first magnetic conductive plate, a second magnetic conductive plate, a third magnetic conductive plate and a magnetic conductive ring; wherein: the end surfaces of the first permanent magnet and the second permanent magnet are spaced apart by the second magnetic conductive plate, the opposite two magnetic pole polarities of the first permanent magnet and the second permanent magnet are the same, the other end surfaces of the first permanent magnet and the second permanent magnet are respectively arranged on the first magnetic conductive plate and the third magnetic conductive plate, and the magnetic conductive ring is arranged between the first magnetic conductive plate and the third magnetic conductive plate.

7. The virtual key device of the intelligent interactive tablet according to claim 6, characterized in that, The stator part further includes an actuator housing, a coil and a coil bracket; a through hole is provided on the magnetic conductive ring, the coil is arranged between the magnetic conductive ring and the first permanent magnet and the second permanent magnet, and is fixedly connected to the actuator housing through the through hole of the magnetic conductive ring by the coil bracket.

8. The virtual key device of the intelligent interactive flat panel according to claim 7, characterized in that, The mover part includes a second connecting shaft and a third connecting shaft; the third connecting shaft is arranged on one end surface of the third magnetic conductive plate; the stator part further includes an actuator front shell, the first connecting shaft and the second connecting shaft are arranged on one end surface of the first magnetic conductive plate, a first elastic member is arranged between the second connecting shaft and the first connecting shaft, the outer edge of the first elastic member is fixedly connected to the actuator housing and the actuator front shell, and the actuator front shell is provided with a through hole for the first connecting shaft to pass through.

9. The virtual key device of the intelligent interactive flat panel according to claim 8, characterized in that, A second elastic member is arranged on the third connecting shaft, and the outer edge of the second elastic member is fixedly connected to the actuator housing and the actuator rear shell.

10. An intelligent interactive flat panel, characterized in that, The intelligent interactive flat panel includes the virtual key device of the intelligent interactive flat panel according to any one of claims 1 to 9 and a processing module, and the virtual key device of the intelligent interactive flat panel is electrically connected to the processing module.

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