Key module and electronic equipment

Abstract

The utility model discloses a key module and electronic equipment, and belongs to the field of electronic equipment. The key module comprises a key, a vibration support and a piezoelectric vibration piece, the vibration support comprises a first connecting arm and a second connecting arm, one end of the first connecting arm is connected with the key, the other end of the first connecting arm extends in the direction away from the key and is connected with the second connecting arm, and the second connecting arm is suspended on one side of the key; the piezoelectric vibration piece is arranged on the second connecting arm and used for driving the vibration support and the key to vibrate together.

Description

Technical Field

[0001] The present application belongs to the field of electronic equipment, and specifically relates to a key module and an electronic equipment. Background Art

[0002] The electronic device in the related art is provided with a key module. When a key in the key module is pressed, the key applies a force feedback to the user, so that when the key is pressed, the force feedback can prompt the user that the pressing is successful. A piezoelectric vibrator can be provided in the electronic device. The piezoelectric vibrator drives the key vibration by using the piezoelectric effect. However, in the key module of the related art, the conversion efficiency of the electrical energy input to the piezoelectric vibrator into the mechanical energy of the key vibration is low, resulting in a waste of electrical energy. Utility Model Content

[0003] The purpose of the embodiment of the present application is to provide a key module that can solve the technical problem of low conversion efficiency of electrical energy to mechanical energy in the key module in the related art.

[0004] In order to solve the above technical problems, this application is implemented as follows:

[0005] In a first aspect, an embodiment of the present application provides a key module, including:

[0006] button;

[0007] The vibration bracket comprises a first connecting arm and a second connecting arm, wherein one end of the first connecting arm is connected to the key, and the other end of the first connecting arm extends in a direction away from the key and is connected to the second connecting arm, and the second connecting arm is suspended on one side of the key;

[0008] The piezoelectric vibrator is arranged on the vibration bracket, and is used to drive the vibration bracket and the key to vibrate together.

[0009] In the second aspect, an embodiment of the present application provides an electronic device, including a mounting frame, a control module and the button module provided in the first aspect, wherein the button is mounted on the mounting frame; the control module is electrically connected to the piezoelectric vibrator, and the control module is used to input current to the piezoelectric vibrator, and the piezoelectric vibrator drives the vibration bracket and the button to vibrate relative to the mounting frame according to the input current.

[0010] In the embodiment provided in the present application, by connecting the button, vibration bracket and piezoelectric vibrator, the current input into the piezoelectric vibrator is controlled, so that vibration can be generated through the piezoelectric vibrator, and the button is driven to vibrate together through the vibration bracket, so that the button can realize force feedback as needed; by setting the suspension part of the vibration bracket, the degree of freedom of the second connecting arm 22 is increased, the constraint on the vibration mode of the vibration bracket 2 is reduced, the starting voltage input to the piezoelectric vibrator 3 is reduced, the ability of the vibration bracket to vibrate with the piezoelectric vibrator is improved, and the conversion efficiency of the key module from electrical energy to mechanical energy is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is one of the partial cross-sectional structural schematic diagrams of a key module provided by an embodiment of the present application;

[0012] Figure 2 This is one of the schematic diagrams of a partially disassembled structure of a key module provided by an embodiment of the present application;

[0013] Figure 3 This is one of the planar structural diagrams of a key module provided by an embodiment of the present application;

[0014] Figure 4 This is the second schematic diagram of a partially disassembled structure of a key module provided by an embodiment of the present application;

[0015] Figure 5 is a schematic diagram of a three-dimensional structure of an electronic device provided by an embodiment of the present application;

[0016] Figure 6 is a schematic diagram of a planar structure of an electronic device provided by an embodiment of the present application;

[0017] Figure 7 This is a second schematic diagram of a partial cross-sectional structure of a key module provided by an embodiment of the present application;

[0018] Figure 8 It is a flowchart of a control method of an electronic device provided by an embodiment of the present application. Description of the drawings:

[0020] 10. Button module; 20. Control module; 30. Mounting frame;

[0021] 1. Button; 2. Vibration bracket; 21. Mounting end; 22. Second connecting arm; 23. Suspension part; 24. First connecting arm; 3. Piezoelectric vibrator; 4. Counterweight; 6. Pressure sensing assembly; 61. Connector; 62. Pressure sensor; 7. Sealing member;

[0022] X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0024] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0025] The key module and electronic device provided in the embodiments of the present application are described in detail below through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0026] like Figure 1 and Figure 2 As shown, an embodiment of the present application provides a button module 10, the button module 10 includes: a button 1, a vibration bracket 2 and a piezoelectric vibrator 3, the vibration bracket 2 includes a first connecting arm 24 and a second connecting arm 22, one end of the first connecting arm 24 is connected to the button 1, and the other end extends in a direction away from the button 1 and is connected to the second connecting arm 22, and the second connecting arm 22 is suspended on one side of the button 1; the piezoelectric vibrator 3 is arranged on the second connecting arm 22, and the piezoelectric vibrator 3 is used to drive the vibration bracket 2 and the button 1 to vibrate together.

[0027] The key module 10 can be installed in a mobile phone, a tablet computer, a laptop computer, a PDA, a vehicle-mounted device, etc., and the embodiments of the present application are not specifically limited. The key module 10 can be used as an input module of the entire machine, or as one of multiple input units in the input module. The input module can be a keyboard, a screen off control button, a volume adjustment button, a brightness adjustment button, etc. The multiple input units can be multiple buttons set in the keyboard. The following is an example in which the key module 10 is installed in a mobile phone and the key module 10 is a volume adjustment button.

[0028] The button 1 is a component for the user to interact with the button module 10. The user can operate the button module 10 through the button 1 to facilitate the operation of the electronic device. The button 1 can also provide force feedback to the user through vibration.

[0029] The piezoelectric vibrator 3 can be made of piezoelectric material in whole or in part. The piezoelectric material can be a piezoelectric crystal, a piezoelectric ceramic, etc. Under the action of the electric field, the piezoelectric vibrator 3 undergoes a piezoelectric effect to produce deformation, and the piezoelectric vibrator 3 continuously changes its deformation to achieve vibration. The piezoelectric vibrator 3 can be electrically connected to the external control module 20, and the control module 20 inputs different currents to the piezoelectric vibrator 3, so that the piezoelectric vibrator 3 produces different deformations, thereby controlling the piezoelectric vibrator 3 to produce vibrations with different vibration frequencies and vibration amplitudes. Thus, the piezoelectric vibrator 3 can drive the button 1 to vibrate with different vibration frequencies and vibration amplitudes to achieve a rich force feedback mode. For example: when the user quickly presses the button 1 and releases the force, the piezoelectric vibrator 3 drives the button 1 to vibrate once to inform the user that the button 1 receives the operation of pressing the button 1 made by the user. For another example: when the user presses the button 1 for a long time to quickly open the application A, the piezoelectric vibrator 3 drives the button 1 to vibrate quickly for the first preset duration to remind the user that the application A has been opened.

[0030] The vibration bracket 2 is used to connect the button 1 and the piezoelectric vibrator 3. The vibration bracket 2 can be made of a rigid material with a certain hardness, and when the vibration bracket 2 is subjected to a force, at least a part of its area will produce a recoverable deformation. Exemplarily, the vibration bracket 2 can be made of a metal material, such as steel, aluminum, copper and the like, and can also be made of a non-metallic material, such as rubber and the like. The vibration bracket 2 can also be assembled together with a metal material and a non-metallic material to ensure that the vibration bracket 2 has a certain rigidity. The first connecting arm 24 and the second connecting arm 22 can be made of the same material or different materials. In some embodiments, the first connecting arm 24 and the second connecting arm 22 are integrally formed parts. Optionally, the first connecting arm 24 and the second connecting arm 22 are formed by cutting, bending, and stamping the same sheet.

[0031] During the vibration of the piezoelectric vibrator 3, the vibration bracket 2 can transmit the vibration force to the key 1, so that the key 1 vibrates together with the piezoelectric vibrator 3. One end of the vibration bracket 2 is connected to the key 1 through the first connecting arm 24, and the second connecting arm 22 of the vibration bracket 2 is selected on one side of the key, that is, one end of the vibration bracket 2 is fixed and the other end is suspended. The degree of freedom of the suspended second connecting arm 22 is increased, so that the suspended second connecting arm 22 has more possibilities of vibration directions; the suspended second connecting arm 22 can also reduce the constraints on the vibration mode of the vibration bracket 2, so that the vibration bracket 2 can produce a larger displacement and amplitude, reduce the starting voltage input to the piezoelectric vibrator 3, and input a current with the starting voltage to the piezoelectric vibrator 3 to drive the vibration bracket 2 to overcome the inertia force, air resistance and other forces to start vibration. The second connecting arm 22 and the piezoelectric vibrator 3 disposed on the second connecting arm 22 have weight. By arranging the second connecting arm 22 to be suspended on one side of the key 1 and arranging the piezoelectric vibrator 3 on the second connecting arm 22, the vibration bracket 2 can amplify the vibration of the piezoelectric vibrator 3. Compared with directly arranging the piezoelectric vibrator 3 on the key 1, when the key 1 achieves the same amplitude, by arranging the piezoelectric vibrator 3 on the second connecting arm 22, the voltage input to the piezoelectric vibrator 3 can be reduced, thereby reducing the requirements for the performance of the piezoelectric vibrator 3. By adjusting the mass of the piezoelectric vibrator 3, the mass of the second connecting arm 22, and the position of the piezoelectric vibrator 3 on the second connecting arm 22, the resonance frequency of the key 1, the vibration bracket 2, and the piezoelectric vibrator 3 as a vibration system can be adjusted. When the piezoelectric vibrator 3 drives the vibration bracket 2 and the piezoelectric vibrator 3 vibrates at the resonant frequency, the ratio of the mechanical energy of the vibration of the key 1 to the electrical energy input to the piezoelectric vibrator 3 can be further improved, thereby improving the conversion efficiency of the electrical energy to mechanical energy of the key module 10, reducing the voltage input to the piezoelectric vibrator 3, and reducing the requirements for the performance of the piezoelectric vibrator 3.

[0032] In the embodiment provided in the present application, by connecting the button 1, the vibration bracket 2 and the piezoelectric vibrator 3, the current input into the piezoelectric vibrator 3 is controlled, and the vibration is generated through the piezoelectric vibrator 3, and the button 1 is driven to vibrate together through the vibration bracket 2, so that the button 1 can realize force feedback as needed; by setting the suspension part 23 of the vibration bracket 2, the degree of freedom of the second connecting arm 22 is increased, the constraint on the vibration mode of the vibration bracket 2 is reduced, the starting voltage input to the piezoelectric vibrator 3 is reduced, the ability of the vibration bracket 2 to vibrate with the piezoelectric vibrator 3 is improved, and the conversion efficiency of the key module 10 from electrical energy to mechanical energy is improved.

[0033] In some embodiments, the first connecting arm 24 includes a mounting end 21 connected to the button 1 and a connecting end connected to the second connecting arm 22, and the mounting end 21 can be bolted, welded, attached, etc. to the button 1. Optionally, the mounting end 21 is a sheet stacked on one side of the button 1, and the mounting end 21 is bolted to the button 1, and the thickness direction of the mounting end 21 can be the same as the vibration direction of the button 1.

[0034] In some embodiments, the first connecting arm 24 is in the form of a sheet, and the mounting end 21 and the connecting end are located in the same reference plane. In other embodiments, the mounting end 21 and the connecting end are both in the form of a sheet, and the end of the mounting end 21 is folded and extends in a direction away from the key 1 to form the connecting end, and the reference plane where the mounting end 21 is located intersects with the reference plane where the connecting end is located.

[0035] In some embodiments, the first connecting arm 24 extends along the first direction X, and the second connecting arm 22 and the key 1 are spaced apart along the first direction X.

[0036] The first connecting arm 24 and the second connecting arm 22 may be in the shape of a regular rectangular sheet, or in the shape of a strip or sheet that is at least partially bent, etc. The shapes of the first connecting arm 24 and the second connecting arm 22 are sufficient to conduct the vibration of the piezoelectric vibrator 3 .

[0037] The first direction X may be the thickness direction of the key 1, or the first direction X may be the direction in which the key 1 is pressed by the user. The first connecting arm 24 may be spaced between the second connecting arm 22 and the key 1, that is, the length of the first connecting arm 24 along the first direction X is equal to the spacing distance between the second connecting arm 22 and the key 1. The first connecting arm 24 and the second connecting arm 22 may extend in the same reference plane to facilitate preparation and installation.

[0038] By arranging the first connecting arm 24 to extend along the first direction X, the second connecting arm 22 can be spaced apart from the key 1 along the first direction X, thereby avoiding interference between the vibrating second connecting arm 22 and the key 1. Arranging the piezoelectric vibrator 3 on the second connecting arm 22 can avoid reserving an area on the first connecting arm 24 for mounting the piezoelectric vibrator 3, thereby reducing the length of the first connecting arm 24 and thus reducing the size of the vibration bracket 2 along the first direction X.

[0039] In some embodiments, the second connecting arm 22 extends along the second direction Y, the piezoelectric vibrator 3 is stacked on the second connecting arm 22 along the third direction Z, and the first direction X, the second direction Y and the third direction Z intersect each other.

[0040] The piezoelectric vibrator 3 is stacked on the second connecting arm 22 along the third direction Z. The piezoelectric vibrator 3 is used to drive the second connecting arm 22 to vibrate along the third direction Z, so that a certain space needs to be reserved for the piezoelectric vibrator 3 and the second connecting arm 22 to vibrate along the third direction Z, thereby reducing the size of the button module 10 along the first direction X and the second direction Y.

[0041] Please refer to Figure 3 , exemplarily, when the key module 10 is provided in the electronic device, the key module 10 can be provided on the middle frame of the electronic device, and the vibration bracket 2 and the piezoelectric vibrator 3 can be provided on the side of the key 1 close to the center of the middle frame. The first direction X and the second direction Y can be the length direction or the width direction of the electronic device, respectively. The third direction Z can be the thickness direction of the electronic device. The electronic device includes a display screen and a back shell provided on both sides of the middle frame, and the second connecting arm 22 vibrates between the display screen and the back shell, driving the key 1 to vibrate along the first direction X relative to the middle frame.

[0042] See also Figure 4 In other embodiments, the end of the first connecting arm 24 away from the button 1 is bent along the third direction Z and extends along the second direction Y to form the second connecting arm 22, and the piezoelectric vibrator 3 is stacked on the second connecting arm 22 along the first direction X, and the first direction X and the second direction Y intersect.

[0043] The piezoelectric vibrator 3 is used to drive the second connecting arm 22 to vibrate along the first direction X, and drives the key 1 to vibrate along the first direction X. The piezoelectric vibrator 3 is used to drive the second connecting arm 22 to vibrate along the first direction X, so that a certain space needs to be reserved for the piezoelectric vibrator 3 and the second connecting arm 22 to vibrate along the first direction X, thereby reducing the size of the key module 10 along the second direction Y and the third direction Z.

[0044] Exemplarily, when the key module 10 is provided in an electronic device, the key module 10 can be provided on the middle frame of the electronic device, and the vibration bracket 2 and the piezoelectric vibrator 3 can be provided on the side of the key 1 close to the center of the middle frame. The first direction X and the second direction Y can be the length direction or the width direction of the electronic device, respectively. The electronic device includes a mainboard provided in the middle frame, and the second connecting arm 22 vibrates between the mainboard and the middle frame, driving the key 1 to vibrate along the first direction X relative to the middle frame.

[0045] By adjusting the bending direction of the second connecting arm 22 and the connection direction between the second connecting arm 22 and the piezoelectric vibrator 3 , the piezoelectric vibrator 3 disposed on the second connecting arm 22 can drive the second connecting arm 22 to vibrate in different directions relative to the key 1 .

[0046] In some embodiments, the vibration bracket 2 includes a suspension portion 23 , which is connected to an end of the second connecting arm 22 facing away from the first connecting arm 24 , and the suspension portion 23 is suspended on one side of the button 1 .

[0047] The suspension part 23 has weight relative to the mounting end 21 or the second connecting arm 22. The suspension part 23 can be configured so that the vibration bracket 2 can amplify the vibration of the piezoelectric vibrator 3 and reduce the voltage input to the piezoelectric vibrator 3, thereby reducing the performance requirements of the piezoelectric vibrator 3. By adjusting the mass of the suspension part 23, the resonance frequency of the key 1, the vibration bracket 2, and the piezoelectric vibrator 3 as a vibration system can be adjusted to further improve the ratio of the amplitude of the key 1 and the voltage input to the piezoelectric vibrator 3.

[0048] In some embodiments, the second connecting arm 22 and the hanging portion 23 extend along the second direction Y, the first connecting arm 24 extends along the first direction X, and the first direction X and the second direction Y intersect.

[0049] The piezoelectric vibrator 3 is disposed on the second connecting arm 22, so that the second connecting arm 22, the piezoelectric vibrator 3 and the suspension portion 23 can together serve as a counterweight relative to the first connecting arm 24, thereby increasing the driving force transmitted from the first connecting arm 24 to the key 1. The second connecting arm 22 and the suspension portion 23 extend along the second direction Y to simplify the structure of the vibration bracket 2.

[0050] In some embodiments, the button module 10 further includes a counterweight 4 , and the counterweight 4 is disposed on the suspension portion 23 .

[0051] The piezoelectric vibrator 3 and the counterweight 4 can be arranged along the second direction Y. The counterweight 4 and the suspension part 23 can be prepared separately and then assembled together. It can also be formed by a one-step molding process. The counterweight 4 can be used to increase the weight of the suspension part 23 relative to the mounting end 21 or the second connecting arm 22. By arranging the counterweight 4 on the suspension part 23, the vibration bracket 2 can amplify the vibration of the piezoelectric vibrator 3. Compared with directly arranging the piezoelectric vibrator 3 on the button 1, when the button 1 achieves the same amplitude, by arranging the counterweight 4, the voltage input to the piezoelectric vibrator 3 can be reduced, thereby reducing the requirements for the performance of the piezoelectric vibrator 3. By adjusting the mass of the counterweight 4, the distance between the counterweight 4 and the piezoelectric vibrator 3, and the positions of the counterweight 4 and the piezoelectric vibrator 3 on the vibration bracket 2, the resonance frequency of the button 1, the vibration bracket 2, the piezoelectric vibrator 3, and the counterweight 4 as a vibration system can be adjusted to further increase the ratio of the amplitude of the button 1 and the voltage input to the piezoelectric vibrator 3, reduce the voltage input to the piezoelectric vibrator 3, and reduce the requirements for the performance of the piezoelectric vibrator 3.

[0052] The piezoelectric vibrator 3 can be stacked on the second connecting arm 22 along the thickness direction of the second connecting arm 22, and the length direction of the piezoelectric vibrator 3 can be the second direction Y. The longer the second connecting arm 22 is, the longer the force arm of the counterweight 4 from the center of the piezoelectric vibrator 3 is, and the greater the moment of the counterweight 4 on the second connecting arm 22 with the same mass. By arranging the piezoelectric vibrator 3 and the counterweight 4 along the second direction Y, the inertia generated by the counterweight 4 as the vibration bracket 2 moves can effectively amplify the vibration of the piezoelectric vibrator 3.

[0053] Please refer again Figure 1 In some embodiments, the button module 10 also includes a pressure sensing component 6, which is connected to the button 1; the pressure sensing component 6 is used to detect the force applied to the button 1 and generate a detection signal, and the piezoelectric vibrator 3 is used to generate a vibration corresponding to the detection signal.

[0054] The pressure sensing component can be arranged on the surface of the key 1, or can be arranged embedded in the key 1. When the user presses the key 1, the pressure sensing component can detect the user's pressing operation and generate a detection signal, and the piezoelectric vibrator 3 generates vibration corresponding to the detection signal, so that the vibration generated by the key 1 corresponds to the pressure it receives.

[0055] In some embodiments, the button module 10 is used to be installed on the mounting frame 30, and the piezoelectric vibrator 3 is used to drive the button 1 to vibrate relative to the mounting frame 30 through the vibration bracket 2; the pressure sensing component 6 includes a connecting member 61 and a pressure sensor 62, one end of the connecting member 61 is connected to the mounting frame 30, and the other end is connected to the button 1, and the pressure sensor 62 is arranged on the connecting member 61.

[0056] The mounting frame 30 is a basic mounting component, which can provide a mounting base for the button 1 and can also provide a mounting base for other components in the electronic device. The button 1 can be mounted on the mounting frame 30 by snapping or by other connecting structures. When an external force presses the button 1, the button 1 can move relative to the mounting frame 30. When the piezoelectric vibrator 3 vibrates, the piezoelectric vibrator 3 drives the button 1 to move relative to the mounting vibration bracket 2. Optionally, when the electronic device is a mobile phone, the mounting frame 30 is the frame of the mobile phone, and a sealing member 7 is provided to block the gap between the button and the frame to prevent dust from entering the frame through the gap between the button and the frame.

[0057] By mounting the key 1 on the mounting frame 30, the mounting frame 30 can limit the position of the key 1 and prevent the key 1 from moving around randomly. For example, the mounting frame 30 can limit the key 1 driven by the piezoelectric vibrator 3 from moving around randomly.

[0058] The connecting member 61 may be in sheet form, one end of the connecting member 61 may be connected to the mounting frame 30 by bolts, and the other end may be connected to the button 1 by bolts. The pressure sensor 62 is attached to the connecting member 61. When the user presses the button 1, the button 1 moves relative to the mounting member, one end of the connecting member 61 moves with the button 1, and the other end is fixed to the mounting frame 30. When the connecting member 61 is pulled, the pressure sensor 62 may detect the change of the connecting member 61 and collect a detection signal that may characterize the pressure.

[0059] In some embodiments, the button module 10 includes a plurality of pressure sensing components 6. The user can press the button 1, or slide on the button 1. Of course, the button 1 can also be operated in other ways, which are not specifically limited here. Different pressure sensors 62 correspond to different areas of the button 1, so when the user presses different areas of the button 1, the detection signals collected by the same pressure sensor 62 may be different. By comparing the detection signals collected by each pressure sensor 62, the operation mode such as the area where the user presses the button 1 and the trajectory of sliding on the button 1 can be analyzed. By setting different operations to trigger different instructions, the input of multiple operation modes can be realized through one button 1.

[0060] The pressure sensor 62 can be used to obtain the force applied to the button 1, and a control instruction can be generated based on the force. The piezoelectric vibrator 3 can vibrate based on the control instruction and drive the vibration bracket 2 to vibrate, and finally drive the button 1 to vibrate through the vibration bracket 2, so that corresponding vibration feedback can be given to the user through the vibration of the button 1, so that the user can understand the operation of the button module 10.

[0061] The number of pressure sensing components 6 in the key module 10 can be two, three, four, and so on. The more the number of pressure sensors 62, the more data collected, and the more accurate the result of the analysis of the detection data collected by the pressure sensors 62. The key 1 can be a long strip, and two pressure sensors 62 can be arranged at both ends of the key 1 along the length direction of the key 1, and more than two pressure sensors 62 can be arranged in sequence along the length direction of the key 1. Multiple pressure sensors 62 can also be arranged around the key 1.

[0062] In some embodiments, the pressure sensing component 6 and the piezoelectric vibrator 3 are disposed on the same side of the button 1 .

[0063] The electronic device may also include other components in addition to the key module 10. The other components may be a control module 20, a battery, a camera, a speaker, etc. housed in the mounting frame 30. The mounting frame 30 and other components may be fixedly connected to ensure the firmness and stability of the connection, or may be detachably connected to facilitate disassembly and assembly. The pressure sensing component 6 and the piezoelectric vibrator 3 may be arranged on one side of the mounting frame 30 close to other components. Optionally, the pressure sensing component 6 and the piezoelectric vibrator 3 are arranged between the control module 20 and the mounting frame 30.

[0064] By arranging the pressure sensing component 6 and the piezoelectric vibrator 3 on the same side of the key 1, the other side of the key 1 can be completely used to receive pressure from the user, thereby increasing the area that can be pressed by the user.

[0065] See also Figure 5 , Figure 6 and Figure 7 The embodiment of the present application also provides an electronic device, including a mounting frame 30, a control module 20 and a button module 10 as described above, wherein the button 1 is mounted on the mounting frame 30; the control module 20 is electrically connected to the piezoelectric vibrator 3, and the control module 20 is used to input current to the piezoelectric vibrator 3 to drive the vibration bracket 2 and the button 1 to vibrate relative to the mounting frame 30.

[0066] The electronic device can be a mobile phone, a tablet computer, a laptop computer, a PDA, a vehicle-mounted device, a mobile Internet device (MID), an augmented reality (AR), a virtual reality (VR) device, an extended-range (XR) device, a robot, an electronic device, an ultra-mobile personal computer (UMPC), a netbook or a personal digital assistant (PDA), etc. It can also be a personal computer (PC), a television (TV), a teller machine or a self-service machine, etc., and the embodiments of the present application are not specifically limited.

[0067] The control module 20 may be a central processing unit, a graphics processing unit, etc., disposed in an electronic device. The control module 20 may be electrically connected to the piezoelectric vibrator 3 via a flexible circuit board. The control module 20 controls the current input to the piezoelectric vibrator 3 as required, so that the piezoelectric vibrator 3 vibrates in a certain pattern. The piezoelectric vibrator 3 drives the button 1 to vibrate, so as to provide different modes of force feedback to the user.

[0068] In the embodiment provided in the present application, by connecting the button 1, the vibration bracket 2 and the piezoelectric vibrator 3, the voltage input to the piezoelectric vibrator 3 is controlled so that the piezoelectric vibrator 3 generates vibrations of a desired frequency and amplitude, and the button 1 is driven to vibrate together with the vibration bracket 2, so that the button 1 can realize different modes of force feedback as needed; by setting the suspension part 23 of the vibration bracket 2 for suspension, the ability of the vibration bracket 2 to vibrate with the piezoelectric vibrator 3 is improved.

[0069] In some embodiments, when the button module 10 also includes at least two pressure sensing components 6, the control module 20 is respectively connected to the pressure sensing components 6 by signal, and the pressure sensing components 6 send the collected detection signals to the control module 20. The control module 20 compares the sizes of each detection signal to identify the different areas of the button 1 acted on by the user, so that one button 1 can input different operations.

[0070] like Figure 7 In the illustrated embodiment, a pressure sensor 62a and a pressure sensor 62b are provided. When the user's finger acts on the area corresponding to the key 1 and the pressure sensor 62a, the pressure detected by the pressure sensor 62a is greater than the pressure detected by the pressure sensor 62b, so that it can be determined that the user presses the key 1 and the area corresponding to the pressure sensor 62a. When the user's finger slides from the area corresponding to the key 1 and the pressure sensor 62a to the area corresponding to the key 1 and the pressure sensor 62b, the pressure detected by the pressure sensor 62b is greater than the pressure detected by the pressure sensor 62a, so that it can be determined that the user presses the key 1 and the area corresponding to the pressure sensor 62b.

[0071] See also Figure 8 , a control method for an electronic device is provided. The user presses button 1 with his finger. In S10, the pressure sensor 62 collects a detection signal, which represents the force applied to button 1, and the pressure sensor 62 feeds the detection signal back to the control module 20; in S20, the control module 20 generates a control instruction according to the detection signal to control the current input to the piezoelectric vibrator 3; in S30, the piezoelectric vibrator 3 can generate vibration according to the input current, and drive the vibration bracket 2 to vibrate, and finally drive button 1 to vibrate through the vibration bracket 2. Therefore, corresponding vibration feedback can be given to the user through the vibration of button 1, so that the user can understand the operation of the button module 10.

[0072] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A key module, characterized in that: include: button; The vibration bracket comprises a first connecting arm and a second connecting arm, wherein one end of the first connecting arm is connected to the key, and the other end of the first connecting arm extends in a direction away from the key and is connected to the second connecting arm, and the second connecting arm is suspended on one side of the key; A piezoelectric vibrator is disposed on the second connecting arm, and is used to drive the vibration bracket and the button to vibrate together.

2. The key module according to claim 1, characterized in that: The first connecting arm extends along a first direction, and the second connecting arm and the button are spaced apart along the first direction.

3. The key module according to claim 2, characterized in that: The second connecting arm extends along a second direction (Y), the piezoelectric vibrator is stacked on the second connecting arm along a third direction, and the first direction, the second direction and the third direction intersect each other.

4. The key module according to claim 2, characterized in that: The end of the first connecting arm away from the button is bent along the third direction and extends along the second direction to form the second connecting arm. The piezoelectric vibrator is stacked on the second connecting arm along the first direction. The first direction, the second direction and the third direction intersect each other.

5. The key module according to claim 1, characterized in that: The vibration bracket includes a suspension part, the suspension part is connected to an end of the second connecting arm facing away from the first connecting arm, and the suspension part is suspended on one side of the button.

6. The key module according to claim 5, characterized in that: The second connecting arm and the suspension portion extend along a second direction, the first connecting arm extends along a first direction, and the first direction and the second direction intersect.

7. The key module according to claim 5, characterized in that: The button module also includes: The counterweight block is arranged on the suspension part.

8. The key module according to claim 1, characterized in that: The button module also includes: A pressure sensing component connected to the button; The pressure sensing component is used to detect the force applied to the key and generate a detection signal, and the piezoelectric vibrator is used to generate vibration corresponding to the detection signal.

9. The key module according to claim 8, characterized in that: The button module is used to be installed on a mounting frame, and the piezoelectric vibrator is used to drive the button to vibrate relative to the mounting frame through the vibration bracket; the pressure sensing assembly includes a connecting member and a pressure sensor, one end of the connecting member is connected to the mounting frame, and the other end is connected to the button, and the pressure sensor is arranged on the connecting member.

10. An electronic device, characterized in that: include: The key module according to any one of claims 1 to 9, A mounting frame, on which the button is mounted; A control module is electrically connected to the piezoelectric vibrator, and is used to input current to the piezoelectric vibrator, and the piezoelectric vibrator drives the vibration bracket and the button to vibrate relative to the mounting frame according to the input current.

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