Key structure, vibration control method and system thereof and controller

Abstract

The embodiment of the invention relates to the technical field of key design, and discloses a key structure, a vibration control method and system thereof and a controller, the key structure comprises a shell and an actuator, the shell comprises an inner surface and an outer surface, the shell is divided into a key area and a non-key area, the non-key area is arranged on the outer side of the key area, and the actuator is arranged on the outer side of the non-key area. The key area is provided with a slotting structure on the inner surface of the shell, and the stiffness coefficient k1 of the slotting structure and the stiffness coefficient k2 of the non-key area meet a relational expression: k2gt; the button structure comprises a button area and an actuator, the button area is arranged in the button area, the actuator is located on one side of the inner surface of the button area, the actuator is configured to generate vibration feedback in the normal direction of the button area, according to the button structure provided by the embodiment of the invention, no seam is formed in the shell, the dustproof and waterproof performance of equipment can be guaranteed, the appearance integration is good, and different vibration feedback can be generated.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of key design, and in particular to a key structure and a vibration control method and system, and a controller thereof. Background Art

[0002] Physical buttons are often used as an input and feedback device for confirming information and are widely used in human-computer interaction devices. When designing the layout of physical buttons on the shell of existing electronic devices, the physical buttons are usually set on the exterior aluminum extruded surface frame, resulting in a key gap between the button area and the exterior aluminum extruded surface frame. When the user presses the physical button, the physical button will produce a certain movement displacement on the surface of the surface frame, and when the physical button is not pressed, it is usually designed to protrude from the exterior aluminum extruded surface frame, so that the user can locate the button and press it easily.

[0003] In the process of implementing the embodiments of the present invention, the inventors found that there are at least the following problems in the above-mentioned related technologies: the current assembly method of physical buttons with raised slits or holes affects the appearance of the product to a certain extent, and the assembly method with slits or holes reduces the dust and water resistance of the product, increases the complexity of assembly, and increases the production cost of the product. Summary of the invention

[0004] The embodiments of the present application provide a key structure and a vibration control method and system, and a controller.

[0005] The purpose of the embodiment of the present invention is achieved through the following technical solutions:

[0006] In order to solve the above technical problems, in the first aspect, a key structure is provided in an embodiment of the present invention, including: a shell and an actuator, the shell including an inner surface and an outer surface, the shell is divided into a key area and a non-key area, the non-key area is arranged outside the key area, the key area is provided with a slotted structure on the inner surface of the shell, and the stiffness coefficient k of the slotted structure is 1 The stiffness coefficient k of the non-key area 2 Satisfies the relationship: k 2 >5k 1 , the actuator is located on one side of the inner surface of the key area, and the actuator is configured to generate vibration feedback in the normal direction of the key area.

[0007] In some embodiments, when the groove structure is annular, the button area is also provided with a terrace-like structure on the inner surface of the shell. The terrace-like structure is located on the inner side of the groove structure and is a structure protruding toward the inner side of the shell. The terrace-like structure has the same stiffness coefficient as the non-button area.

[0008] In some embodiments, the key structure further includes: a pressure sensor, the pressure sensor is located on one side of the inner surface of the key area, and the pressure sensor is electrically connected to the actuator.

[0009] In some embodiments, the button structure further includes: a plurality of connection structures, and the plurality of connection structures are used to respectively connect the pressure sensor and the housing, and connect the actuator and the housing.

[0010] In some embodiments, when the actuator is a piezoelectric ceramic actuator, the key structure also includes: a supporting structure, the actuator is fixed between the shell and the supporting structure, the stiffness coefficient of the supporting structure is greater than the stiffness coefficient of the non-key area, and the supporting structure and the actuator are connected through the connecting structure.

[0011] To solve the above technical problems, in the second aspect, a vibration control method for a key structure is provided in an embodiment of the present invention, which is applied to the key structure described in the first aspect. The vibration control method includes: detecting a pressure signal applied to the key structure; and outputting a corresponding drive signal based on the pressure signal to cause the actuator to generate corresponding vibration feedback.

[0012] In some embodiments, outputting a corresponding driving signal according to the pressure signal further includes: acquiring a driving waveform corresponding to the pressure signal through a pre-stored mapping relationship; and power-amplifying the driving waveform to obtain and output the corresponding driving signal.

[0013] In some embodiments, the method further includes: reporting the pressure signal and the drive signal to a host.

[0014] To solve the above technical problems, in the third aspect, an embodiment of the present invention provides a controller, comprising: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the method described in the second aspect above.

[0015] To solve the above technical problems, in a fourth aspect, an embodiment of the present invention provides a vibration control system for a key structure, comprising: a controller as described in the third aspect, and a key structure as described in the first aspect; a host, which is communicatively connected to the controller; and a power amplifier, whose input end is electrically connected to the controller, and whose output end is electrically connected to the actuator in the key structure.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: Different from the prior art, the embodiment of the present invention provides a key structure and a vibration control method and system thereof, and a controller, wherein the key structure comprises a shell and an actuator, wherein the shell comprises an inner surface and an outer surface, and the shell is divided into a key area and a non-key area, wherein the non-key area is arranged outside the key area, and the key area is provided with a slotted structure on the inner surface of the shell, and the stiffness coefficient k of the slotted structure is 1 The stiffness coefficient k of the non-key area 2 Satisfies the relationship: k 2 >5k 1 The actuator is located on one side of the inner surface of the button area, and the actuator is configured to generate vibration feedback in the normal direction of the button area. The button structure provided in the embodiment of the present invention has no seams on the shell, which can ensure the dust and water resistance of the device, has a good appearance and can generate different vibration feedbacks. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements / modules and steps with the same reference numerals in the drawings are represented as similar elements / modules and steps. Unless otherwise specified, the figures in the drawings do not constitute proportional limitations.

[0018] Figure 1 is a side view structural diagram of a key structure provided in Embodiment 1 of the present invention;

[0019] Figure 2 is a side view structural diagram of another key structure provided in the first embodiment of the present invention;

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of two annular slotted structures provided in the first embodiment of the present invention;

[0021] Figure 4 It is a schematic diagram of the principle of pressure and shell deformation;

[0022] Figure 5 yes Figure 4 Schematic diagram of the graph of different thicknesses and stiffness coefficients of the structure shown;

[0023] Figure 6 It is a diagram showing the correspondence between different lengths of the slotted structure and the stiffness coefficient;

[0024] Figure 7 It is a flow chart of a vibration control method of a key structure provided by Embodiment 2 of the present invention;

[0025] Figure 8 yes Figure 7A schematic diagram of a sub-process of step S20 in the vibration control method shown;

[0026] Fig. 9 is a flow chart of another vibration control method of a key structure provided in Embodiment 2 of the present invention;

[0027] Fig.10 is a schematic diagram of the structure of a controller provided in Embodiment 3 of the present invention;

[0028] Fig.11 This is a schematic structural diagram of a vibration control system of a key structure provided by a fourth embodiment of the present invention;

[0029] Fig.12 It is a structural schematic diagram of a vibration control system of another key structure provided in Embodiment 4 of the present invention. DETAILED DESCRIPTION

[0030] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several variations and improvements may be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0031] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0032] It should be noted that, if there is no conflict, the various features in the embodiments of the present invention can be combined with each other, all within the scope of protection of the present application. In addition, although the functional module division is performed in the device schematic diagram and the logical order is shown in the flow chart, in some cases, it may be different from the module division in the device, or the steps shown or described in the order in the flow chart. It should be noted that when an element is described as "fixed to" another element, it can be directly on another element, or one or more centered elements can be present therebetween. When an element is described as "connected" to another element, it can be directly connected to another element, or one or more centered elements can be present therebetween. The terms "inside", "outside", "vertical", "horizontal" and similar expressions used in this specification are for illustrative purposes only.

[0033] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended 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.

[0034] In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0035] In order to solve the problems that the protrusions and slits of physical buttons affect the appearance of the product to a certain extent, the slit assembly method reduces the dust and water resistance of the product, and the assembly complexity and production cost are high, the embodiments of the present invention provide a button structure and its vibration control method and system, and a controller. The structure has no slits on the shell, so it can ensure the dust and water resistance of the equipment, has good appearance integrity, is relatively simple to assemble, the motion displacement generated in the button area is negligible, and different vibration feedback can be generated according to different pressure signals.

[0036] Specifically, the embodiments of the present invention are further described below in conjunction with the accompanying drawings.

[0037] Embodiment 1

[0038] The embodiment of the present invention provides a key structure, see Figure 1 and Figure 2 , which respectively show side views of two key structures provided by embodiments of the present invention, the key structure comprises: a housing 10 and an actuator 20. Further, the key structure may also include a pressure sensor 30, a support structure 40 and a connection structure (not shown).

[0039] The housing 10 includes an inner surface S1 and an outer surface S2, and the housing is divided into a key area A1 and a non-key area A2, wherein the non-key area A2 is arranged outside the key area A1, and the key area A1 is provided with a slot structure 11 on the inner surface of the housing 10, and the stiffness coefficient k of the slot structure 11 is 1 The stiffness coefficient k of the non-key area A2 2 Satisfies the relationship: k 2 >5k 1 The slotted structure 11 can be obtained by milling the inner surface S1 of the housing 10 .

[0040] And there is, in Figure 1 and Figure 2In the example shown, the slotted structure 11 is annular. In this case, the key area A1 is further provided with a terrace structure 12 on the inner surface S1 of the housing 10. The terrace structure 12 is located on the inner side of the slotted structure 11 and is a structure protruding toward the inner side of the housing 10. The terrace structure 12 has the same stiffness coefficient k as that of the non-key area A2. 2 , that is, the stiffness coefficient k of the slotted structure 11 1 The stiffness coefficient k of the table-like structure 12 is 2 The same relationship is satisfied: k 2 >5k 1 .

[0041] The slotted structure 11 may be annular, for details, see Figure 3 As shown, it can be a rectangular ring or circular ring-shaped annular slotted structure. Further, the terrace-shaped structure 12 can also be cancelled, that is, the area where the terrace-shaped structure 12 is located is also a part of the slot, and forms an integrated groove slotted structure with the slotted structure 11.

[0042] In the embodiment of the present invention, the slotted structure 11 can be provided to thin part of the key area of ​​the housing 10, so that the local bending stiffness of the key area is significantly reduced. At this time, if a pressure vertical to the surface of the housing 10 is provided in the center of the key area A1, it can cause Figure 1 and Figure 2 A large displacement is generated in the vertical direction shown, achieving local vibration. Please also refer to Figure 4 , which shows the principle diagram of pressure and shell deformation, where F is the pressure applied vertically to the structure, and x is the vertical displacement of the shell under this pressure, then, Figure 4 The housing shown is in the vertical direction, i.e. Figure 4 The stiffness coefficient in the direction of the arrow is Based on this, in order to realize that the key area A1 can vibrate locally, it can be determined that there are at least k 1 <k 2 .

[0043] Preferably, Figure 1 and Figure 2 In the example shown, and in Figure 1 and Figure 2 From the perspective shown, the size of the slotted structure 11 (horizontal length × vertical length) is 45 mm × 20 mm, the size of the table-shaped structure 12 (horizontal length × vertical length) is 16 mm × 6 mm, the thickness of the housing 10 at the slotted structure 11 is 0.5 mm, the vertical stiffness coefficient of the structure is about 700 N / mm, and Figure 2The stiffness coefficient of the middle back support structure 40 is about 4000N / mm. Considering that in the actual production process, a structure that is too thin is difficult to withstand processes such as sandblasting, see Figure 5 The graph of different thicknesses and stiffness coefficients of the structure shown in the figure shows that the thinner the key structure is, the easier it is to produce local vibration effects, that is, it can produce more realistic key effects. Figure 2 When the support structure 40 is shown, the thickness of the housing 10 at the slotted structure 11 is preferably set to 0.5 mm. Figure 6 From the corresponding graph of different lengths of the slotted structure and the stiffness coefficient, it can be seen that increasing the length of the slotted structure 11 in the horizontal direction can also reduce the local stiffness coefficient, and when the length increases to a certain extent, the stiffness coefficient does not decrease significantly, so the preferred length of this solution is 45mm.

[0044] The actuator 20 is located on one side of the inner surface of the key area A1, and the actuator 20 is configured to generate vibration feedback in the normal direction of the key area A1, wherein the normal direction of the key area A1 is also Figure 1 The vertical direction of Figure 1 The direction indicated by the arrow. The actuator 20 can be an actuator device / equipment / device such as a motor or a piezoelectric ceramic actuator. Wherein, when the actuator 20 is a motor, the motor can be a linear motor or a rotor motor, etc. The linear motor can vibrate perpendicularly to the key area A1, so the vibration effect is better, and the motor can drive the key area A1 to vibrate. When the actuator 20 is a piezoelectric ceramic actuator, the piezoelectric ceramic actuator can be a single-layer piezoelectric ceramic, a multi-layer piezoelectric ceramic, a cymbal transducer, etc., and the piezoelectric ceramic actuator can generate expansion and contraction during voltage excitation, and act on the inner surface S1 of the shell 10 to make the surface of the shell 10 vibrate vertically.

[0045] The pressure sensor 30 is located on one side of the inner surface of the key area A1, and the pressure sensor 30 is electrically connected to the actuator 20. The pressure sensor 30 is used to detect the pressure or deformation generated in the key area A1 or near the key area A1 during the pressing process, thereby providing a pressing detection signal or directly outputting a pressure signal. The pressure sensor 30 can be a strain gauge, etc. In some embodiments, if the actuator 20 adopts a piezoelectric ceramic actuator, the pressing detection signal or pressure signal can also be directly collected by the piezoelectric ceramic actuator, and the pressure sensor 30 may not be required.

[0046] The support structure 40 exists when the actuator 20 is a piezoelectric ceramic actuator. The actuator 20 is fixed between the housing 10 and the support structure 40. The stiffness coefficient k of the support structure 40 is 3Greater than the stiffness coefficient k of the non-key area A2 2 , that is, k 1 <k 2 <k 3 The support structure 40 and the actuator 20 are connected via the connection structure. The support structure 40 needs to be a high-strength support structure to achieve relative static state with the housing, provide a strong support when the user presses the key area A1, and can be directly rigidly connected with the housing 10 during actual deployment.

[0047] The number of the connection structures (not shown) is several, and the connection structures may be connection structures of the same type and / or size, and the connection structures are used to respectively connect the pressure sensor 30 to the housing 10, the actuator 20 to the housing 10, and the support structure 40 to the actuator 20. The connection structures may be glue or screws with a relatively high hardness, and may be selected and set according to actual needs.

[0048] Embodiment 2

[0049] The embodiment of the present invention provides a method for controlling the vibration of a key structure, see Figure 7 , which shows the process of a vibration control method of a key structure provided by an embodiment of the present invention, the vibration control method of the key structure is applied to the key structure described in Example 1, and the vibration control method includes but is not limited to the following steps:

[0050] Step S10: Detecting a pressure signal applied to the key structure;

[0051] In an embodiment of the present invention, first, the pressure signal applied to the key structure can be directly obtained through a pressure sensor to obtain a pressure value; or, when the actuator adopts a piezoelectric ceramic actuator, the piezoelectric ceramic actuator can also be directly used to obtain the driving waveform applied to the key structure, and the pressure signal and pressure value can be obtained to perform the next step of judgment.

[0052] Step S20: outputting a corresponding driving signal according to the pressure signal, so that the actuator generates corresponding vibration feedback.

[0053] In the embodiment of the present invention, after the pressure signal is obtained, the corresponding vibration state can be switched according to the size of the pressure value, the corresponding pressure frequency can be generated, and the corresponding vibration effect can be achieved. For details, see Figure 8 , which shows Figure 7 A sub-process of step S20 in the vibration control method, outputting a corresponding driving signal according to the pressure signal so that the actuator generates corresponding vibration feedback, includes:

[0054] Step S21: obtaining a driving waveform corresponding to the pressure signal through a pre-stored mapping relationship;

[0055] Step S22: power-amplify the driving waveform to obtain the corresponding driving signal and output it.

[0056] In an embodiment of the present invention, a plurality of drive signals may be pre-stored in a storage medium such as a controller or memory connected to the actuator in the shell, so as to provide the user with a plurality of different tactile feedback effects for the user to select in the settings. When the user applies different pressures on the button area and / or applies pressure at different frequencies, a pre-stored mapping relationship table is retrieved to obtain the vibration feedback type, and a corresponding drive signal is output to control the actuator to achieve vibration of the corresponding effect, so as to prompt the user whether to trigger the corresponding function or confirm / deny information.

[0057] For further information, see Fig. 9 , which shows the process of another vibration control method of a key structure provided by an embodiment of the present invention, the method further includes:

[0058] Step S30: reporting the pressure signal and the driving signal to a host.

[0059] In an embodiment of the present invention, when the pressure signal is detected, the pressure signal can be reported to the host through the controller, thereby triggering a key event; and / or, after the controller generates a drive signal, the drive signal is reported to the host to realize the detection of the key event.

[0060] Embodiment 3

[0061] The present invention also provides a controller, see Fig.10 , which shows that it is possible to execute Figures 7 to 9 The hardware structure of the controller of the vibration control method of the key structure. The controller 100 may be the controller described in the second embodiment.

[0062] The controller 100 includes: at least one processor 101; and a memory 102 that is communicatively connected to the at least one processor 101. Fig.10 The memory 102 stores instructions that can be executed by the at least one processor 101, and the instructions are executed by the at least one processor 101 so that the at least one processor 101 can perform the above Figures 7 to 9 The processor 101 and the memory 102 may be connected via a bus or other means. Fig.10 The example of connecting through bus is taken in the following.

[0063] The memory 102 is a non-volatile computer-readable storage medium that can be used to store non-volatile software programs, non-volatile computer executable programs and modules, such as program instructions / modules corresponding to the vibration control method of the key structure in the embodiment of the present application. The processor 101 executes various functional applications and data processing of the controller by running the non-volatile software programs, instructions and modules stored in the memory 102, that is, the vibration control method of the key structure in the above method embodiment is implemented.

[0064] The memory 102 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application required for at least one function; the data storage area may store data created according to the use of the vibration control device of the key structure, etc. In addition, the memory 102 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device or other non-volatile solid-state storage device. In some embodiments, the memory 102 may optionally include a memory remotely arranged relative to the processor 101, and these remote memories may be connected to the vibration control device of the key structure via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0065] The one or more modules are stored in the memory 102, and when executed by the one or more processors 101, the vibration control method of the key structure in any of the above method embodiments is executed, for example, the vibration control method described above is executed. Figures 7 to 9 method steps.

[0066] The above-mentioned product can execute the method provided in the embodiment of the present application, and has the functional modules and beneficial effects corresponding to the execution method. For technical details not fully described in this embodiment, please refer to the method provided in the embodiment of the present application.

[0067] The present application also provides a non-volatile computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are executed by one or more processors, for example, to execute the above-described Figures 7 to 9 method steps.

[0068] The present application also provides a computer program product, including a computer program stored in a non-volatile computer-readable storage medium, wherein the computer program includes program instructions. When the program instructions are executed by a computer, the computer executes the vibration control method of the key structure in any of the above method embodiments, for example, executing the above described Figures 7 to 9 method steps.

[0069] Embodiment 4

[0070] A vibration control system 1 of a key structure according to an embodiment of the present invention, see Fig.11 and Fig.12 , which shows the structure of the vibration control system 1 of two key structures provided in the embodiments of the present invention. The vibration control system 1 of the key structure includes: a controller 100, a host 200, a power amplifier 300 and the key structure provided in the first embodiment.

[0071] It should be noted that in Fig.12 In the example shown, when the actuator 20 is a piezoelectric ceramic actuator, Fig.12 As shown, it is directly connected to the controller 100 and does not require the pressure sensor 30, and can also be as shown Fig.11 As shown, the controller 100 is connected to the actuator 200 through a power amplifier 200 and a pressure sensor 30 is used; when the actuator 20 uses other types of actuators, the vibration control system 1 of the key structure is usually used. Fig.11 The structure shown.

[0072] The controller 100 is the controller 100 described in Embodiment 2 and Embodiment 3, and is used to collect the waveform of the pressure signal and report the pressing event or the power switch event to the host 200; the key structure is the key structure described in Embodiment 1. For details about the controller 100 and the key structure, please refer to Embodiment 1 to Embodiment 3 and the attached Figure 1 Fig.10 As shown, no further details are given here.

[0073] The host 200 is connected to the controller 100 for communication; it is used to record the pressing event or the power switch event, and / or to realize the manual or automatic setting of different types of tactile feedback by the user. Specifically, the shape of the driving signal can be changed by the controller 100 to realize the driving of different vibration frequencies, realize different tactile feedback effects, and thus enhance the user experience. The host 200 can be an electronic device such as a server, a mobile phone, a tablet, a computer, etc., which can be selected according to the actual situation.

[0074] The power amplifier 300 has an input end electrically connected to the controller 100 and an output end electrically connected to the actuator 20 in the key structure, and is used to amplify the waveform of the drive signal provided by the controller 100 to a voltage amplitude for the actuator 20 to operate, so that the actuator 20 can operate according to the amplified drive signal.

[0075] When the vibration control system 1 of the key structure provided by the embodiment of the present invention is working, the user presses Figure 1 and Figure 2The key area A1 on the shell 10 shown in the figure causes the shell on the key area A1 to deform. After the pressure sensor 30 or the piezoelectric ceramic actuator 20 detects the pressure signal, it reports it to the controller 100 to trigger a pressing event. The controller 100 can further report it to the host 200 and / or generate a driving signal, and amplify the driving signal through the power amplifier 300 and send it to the actuator 20. The actuator can move based on the driving signal to cause the key area A1 to vibrate.

[0076] The embodiment of the present invention provides a key structure and a vibration control method and system and a controller thereof. The key structure includes a shell and an actuator. The shell includes an inner surface and an outer surface, and the shell is divided into a key area and a non-key area. The non-key area is arranged outside the key area. The key area is provided with a slotted structure on the inner surface of the shell. The stiffness coefficient k of the slotted structure is 1 The stiffness coefficient k of the non-key area 2 Satisfies the relationship: k 2 >5k 1 The actuator is located on one side of the inner surface of the button area, and the actuator is configured to generate vibration feedback in the normal direction of the button area. The button structure provided in the embodiment of the present invention has no seams on the shell, which can ensure the dust and water resistance of the device, has a good appearance and can generate different vibration feedbacks.

[0077] It should be noted that the device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, and may be located in one place or distributed over multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0078] Through the description of the above implementation methods, ordinary technicians in this field can clearly understand that each implementation method can be implemented by means of software plus a general hardware platform, and of course, it can also be implemented by hardware. Ordinary technicians in this field can understand that all or part of the processes in the above-mentioned embodiment method can be completed by instructing related hardware through a computer program, and the program can be stored in a computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, the storage medium can be a disk, an optical disk, a read-only memory (ROM) or a random access memory (RAM), etc.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may also be combined, the steps may be implemented in any order, and there are many other changes in different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A key structure, It is characterized in that include: Housing and actuator, The shell comprises an inner surface and an outer surface, and the shell is divided into a key area and a non-key area, the non-key area is arranged outside the key area, and the key area is provided with a groove structure on the inner surface of the shell, The stiffness coefficient k of the slotted structure 1 The stiffness coefficient k of the non-key area 2 Satisfies the relationship: k 2 >5k 1 , The actuator is located at one side of the inner surface of the key area, and the actuator is configured to generate vibration feedback in a normal direction of the key area.

2. The key structure according to claim 1, It is characterized in that When the slotted structure is annular, the key area is also provided with a terrace-like structure on the inner surface of the shell. The terrace-like structure is located on the inner side of the slotted structure and is a structure protruding toward the inner side of the shell. The terrace-like structure has the same stiffness coefficient as the non-key area.

3. The key structure according to claim 1 or 2, It is characterized in that The key structure further includes: a pressure sensor, which is located at one side of the inner surface of the key area and is electrically connected to the actuator.

4. The key structure according to claim 3, It is characterized in that The key structure further includes: a plurality of connection structures, and the plurality of connection structures are used to respectively connect the pressure sensor and the housing, and connect the actuator and the housing.

5. The key structure according to claim 4, It is characterized in that When the actuator is a piezoelectric ceramic actuator, the key structure also includes: a supporting structure, the actuator is fixed between the shell and the supporting structure, the stiffness coefficient of the supporting structure is greater than the stiffness coefficient of the non-key area, and the supporting structure and the actuator are connected through the connecting structure.

6. A vibration control method for a key structure, It is characterized in that Applied to the key structure according to any one of claims 1 to 5, the vibration control method comprises: Detecting a pressure signal applied to the key structure; According to the pressure signal, a corresponding driving signal is output to make the actuator generate corresponding vibration feedback.

7. The vibration control method of the key structure according to claim 6, It is characterized in that Outputting a corresponding driving signal according to the pressure signal also includes: Obtaining a driving waveform corresponding to the pressure signal through a pre-stored mapping relationship; The driving waveform is power-amplified to obtain the corresponding driving signal and output it.

8. The vibration control method of the key structure according to claim 6, It is characterized in that The method further comprises: The pressure signal and the driving signal are reported to the host.

9. A controller, It is characterized in that include: at least one processor; as well as, a memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the method according to any one of claims 6 to 8.

10. A vibration control system for a key structure, It is characterized in that include: The controller as claimed in claim 9, and the key structure as claimed in any one of claims 1 to 5; A host computer, connected to the controller for communication; A power amplifier, whose input end is electrically connected to the controller, and whose output end is electrically connected to the actuator in the key structure.

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