Key and electronic device

Abstract

This application provides a button and an electronic device, relating to the field of electronic devices. The button is electrically connected to a chip in the electronic device. The button includes: a keycap, an electrical connector, a mechanical switch, and a base. The base includes a groove, within which the keycap, electrical connector, and mechanical switch are stacked. The base also includes a first opening through which the electrical connector passes and is electrically connected to the chip. The keycap has a pressing surface. The keycap transmits pressure from the pressing surface to the mechanical switch. The mechanical switch is electrically connected to the electrical connector. The button also includes a cantilever and a pressure sensor. The cantilever is located on the side of the keycap opposite the pressing surface and is deformed under pressure from the keycap. The cantilever is connected to the electrical connector, and the pressure sensor is also electrically connected to the electrical connector. The electrical connector transmits the deformation of the cantilever to the pressure sensor, which detects the deformation of the cantilever. This design increases the number of button functions while maintaining a simple structure and facilitating replacement.

Description

Technical Field

[0001] This application relates to the field of electronic device technology, and more particularly to a button and an electronic device. Background Technology

[0002] Electronic devices such as mobile phones and tablets typically have one or more buttons. Users operate these buttons to perform corresponding functions.

[0003] Power buttons, volume buttons, and other commonly used buttons on electronic devices are mostly traditional mechanical buttons. A single press transmits a signal to cause the electronic device to perform its corresponding function. A mechanical button consists of a keycap, a mechanical switch, and a transmission mechanism between the keycap and the mechanical switch. When the user presses the keycap, it pushes the transmission mechanism towards the mechanical switch. The transmission mechanism compresses the mechanical switch, forcing it to deform, thereby triggering an electrical signal to control the execution of the corresponding function. However, mechanical buttons have a limited functional design; often, a single button can only correspond to one function.

[0004] Multi-function buttons can recognize different user gestures on the buttons, such as taps, swipes, swipes, and presses, by adjusting the button structure and increasing the types of sensors, and trigger different functions accordingly. However, as the number of internal components increases, the coupling between these components becomes more complex, making the button structure more difficult to replace. Summary of the Invention

[0005] This application provides a button and an electronic device that can increase the number of button functions, and has a simple structure that is easy to replace.

[0006] In a first aspect, this application provides a button that is electrically connected to a chip in an electronic device. The button includes: a keycap, an electrical connector, a mechanical switch, and a base. The base includes a groove, in which the keycap, electrical connector, and mechanical switch are stacked. The base also includes a first opening through which the electrical connector passes and is electrically connected to the chip. The keycap has a pressing surface. The keycap is used to transmit the pressure received on the pressing surface to the mechanical switch. The mechanical switch is electrically connected to the electrical connector. The button also includes a cantilever and a pressure sensor. The cantilever is located on the side of the keycap opposite to the pressing surface and is used to deform under the pressing pressure from the keycap. The cantilever is connected to the electrical connector, and the pressure sensor is electrically connected to the electrical connector. The electrical connector is used to transmit the deformation of the cantilever to the pressure sensor, and the pressure sensor is used to detect the deformation of the cantilever.

[0007] In this way, while retaining the mechanical switch, the button can also recognize the applied pressure and trigger the corresponding function, increasing the number of functions of a single button. Furthermore, compared to embodiments where keycaps, electrical connectors, mechanical switches, and cantilever arms are assembled sequentially on a base, the button provided in this application has the keycaps, electrical connectors, and mechanical switches stacked within a groove in the base, simplifying the pressure transmission path and reducing the button's structural complexity. In addition, due to the simple button structure, the various components can be assembled into a single unit in a separate process before being installed into the groove in the base, improving the button's modularity. Moreover, the electrical connectors connect the button's components to the internal chip of the electronic device. When replacing the button, only the connection between the electrical connectors and other internal components needs to be disconnected for complete button replacement, simplifying the operation and reducing production and installation costs.

[0008] In one possible implementation of the first aspect, the key further includes a capacitive sensor located between the keycap and the electrical connector; the number of capacitive sensors is multiple and spaced apart, the capacitive sensors are electrically connected to the electrical connector, and the capacitive sensors are used to detect the sliding of a finger on the pressing surface.

[0009] In this way, while retaining the mechanical switch functionality, the button can also recognize the pressure applied to the button, identify the direction of the user's finger movement on the pressing surface, and trigger the corresponding function, increasing the number of functions of a single button. Furthermore, compared to embodiments that sequentially assemble the keycap, capacitive sensor, electrical connector, mechanical switch, and cantilever on the electronic device, the button provided in this application has the keycap, capacitive sensor, electrical connector, and mechanical switch stacked within a groove in the base, simplifying the pressure transmission path and reducing the structural complexity of the button. In addition, due to the simple button structure, the various components of the button can be assembled into a whole in a separate process before being installed in the groove, enhancing the modularity of the button. Moreover, the electrical connector allows the structure within the button to be electrically connected to the chip inside the electronic device. When replacing the button, only the connection between the electrical connector and other components inside the electronic device needs to be disconnected for the entire button to be replaced, simplifying the operation and reducing the production and installation costs of the button.

[0010] In one possible implementation of the first aspect, the cantilever includes a printed circuit board (PCB) located between a capacitive sensor and an electrical connector. The capacitive sensor is electrically connected to the PCB, and the PCB is electrically connected to the electrical connector. In this way, the capacitive sensor is electrically connected to the electrical connector via the PCB, allowing the electrical connector to connect to the mechanical switch, the capacitive sensor, and the pressure sensor, and to transmit electrical signals. Simultaneously, due to the PCB's deformability and capacitive shielding capabilities, it can simultaneously serve as both the cantilever and the capacitive shield. Therefore, by reusing the PCB, the circuit structure and component count of the button are simplified, reducing the button's manufacturing cost.

[0011] In one possible implementation of the first aspect, the button further includes a dam located between and connected to the printed circuit board and the electrical connector; the printed circuit board and the electrical connector are electrically connected via conductive parts; the dam, the printed circuit board, and the circuit board together form a receiving cavity, within which a pressure sensor is located and connected to the printed circuit board. In this way, the pressure sensor can be directly connected to the printed circuit board, and when the printed circuit board deforms under pressure, this deformation can be directly transmitted to the pressure sensor, improving the button's accuracy in detecting pressure. Simultaneously, because the pressure sensor is located within the receiving cavity and isolated from the outside, it provides waterproof protection, improving the button's waterproof performance.

[0012] In one possible implementation of the first aspect, the cantilever is located between the keycap and the electrical connector; the mechanical switch is located on the side of the electrical connector away from the cantilever. In this way, when the cantilever deforms, the deformation is transmitted to a pressure sensor via the electrical connector, and the deformation detected by the pressure sensor is transmitted to a chip inside the electronic device, thus determining the key's pressing force. Simultaneously, the electrical connector is electrically connected to the mechanical switch, allowing a single connector to transmit electrical signals from both the mechanical switch and the pressure sensor, simplifying the key's circuit structure and reducing the number of components, thereby lowering the key's manufacturing cost.

[0013] In one possible implementation of the first aspect, the electrical connector includes a first electrical connector and a second electrical connector; the first electrical connector and the second electrical connector are electrically connected; the first electrical connector is located between the capacitive sensor and the mechanical switch, and the first electrical connector is electrically connected to the capacitive sensor; the base includes a bottom wall and a side wall connected to the bottom wall, and the keycap, the capacitive sensor, the first electrical connector, the mechanical switch and the bottom wall are stacked; the second electrical connector is disposed close to or spaced from the bottom wall, the cantilever is connected to the second electrical connector, the pressure sensor is electrically connected to the second electrical connector, and the second electrical connector is used to transmit the deformation of the cantilever to the pressure sensor.

[0014] In this way, the electrical signal from the sensor can be transmitted to the chip inside the electronic device via the first electrical connector to identify the sliding direction of the user on the keycap's pressing surface. Simultaneously, the deformation of the cantilever is transmitted to the pressure sensor via the second electrical connector, and the deformation detected by the pressure sensor is transmitted to the chip inside the electronic device via the second electrical connector, thus determining the pressing force of the key. Furthermore, the first and second electrical connectors are electrically connected, allowing them to be integrated into a single circuit or molded as a single unit before being connected to the chip inside the electronic device. This reduces the structural complexity of the key and lowers its manufacturing cost.

[0015] In one possible implementation of the first aspect, the second electrical connector is tightly connected to the bottom wall; the cantilever includes the bottom wall, and the second electrical connector is used to transmit the deformation of the bottom wall to the pressure sensor. Thus, the bottom wall can be used as a cantilever, and the deformation of the bottom wall can be detected by the pressure sensor to obtain the pressing force on the button, improving the structural stability of the button.

[0016] In one possible implementation of the first aspect, the second electrical connector is located on the side of the bottom wall opposite to the pressing surface. This allows the pressure sensor to be housed inside the electronic device, providing waterproof protection and improving the button's lifespan.

[0017] In one possible implementation of the first aspect, the cantilever shape includes a flat plate, a U-shaped beam, a T-shaped beam, or an I-shaped beam. Among these, a flat plate cantilever offers a simple structure and is easy to manufacture and install; a U-shaped beam cantilever provides higher strength and stability, increasing the button's lifespan; a T-shaped beam cantilever can provide greater bending stiffness while reducing material usage and lowering the button's manufacturing cost; and an I-shaped beam cantilever provides higher bending and torsional stiffness.

[0018] In one possible implementation of the first aspect, the cantilever material includes steel, copper, aluminum, polymer materials, or fiber composite materials. This improves the cantilever's deformability and increases the button's sensitivity to pressure detection.

[0019] In one possible implementation of the first aspect, the mechanical switch includes a dome switch, a micro switch, and a mechanical shaft. The dome switch has stable rebound, a good tactile feel, and can undergo various surface treatments; the micro switch has reliable switching and high precision; and the mechanical shaft has a good tactile feel, a pleasant sound, and high playability.

[0020] In one possible implementation of the first aspect, the button further includes a capacitive shield located between the capacitive sensor and the pressure sensor. Thus, the capacitive shield isolates the capacitive sensor and the pressure sensor on both sides, shields at least part of the capacitive interference between the capacitive sensor and the pressure sensor, reduces capacitive coupling between the capacitive sensor and the pressure sensor 37, and improves the button's ergonomic sensitivity.

[0021] In one possible implementation of the first aspect, the capacitor shielding component includes a printed circuit board, an aluminum shielding plate, a copper shielding plate, and a conductive polymer material plate. When the capacitor shielding component is a printed circuit board, a capacitive sensor can also be formed simultaneously during the manufacturing of the printed circuit board through electroplating or other methods. The electrical signal of the capacitive sensor 38 is then transmitted to the electrical connector via the printed circuit board, simplifying the circuit structure and number of components of the button and reducing the manufacturing cost of the button.

[0022] In one possible implementation of the first aspect, a capacitive shield is located between the capacitive sensor and the electrical connector; the capacitive shield includes a first groove, the opening of which faces away from the pressing surface; the pressure sensor is located within the first groove. Thus, the first groove provides a accommodating space for the pressure sensor and protects it. Simultaneously, the first electrical connector can transmit both the electrical signal from the capacitive sensor and the electrical signal from the pressure sensor transmitted by the capacitive shield, simplifying the button's circuit structure and the number of components, reducing the button's structural complexity. Furthermore, the second electrical connector only needs to transmit the electrical signal from the mechanical switch, thus reducing the area of ​​the second electrical connector and the amount of material used in the button.

[0023] In one possible implementation of the first aspect, the capacitor shield includes a rigid-flex PCB, which is integrally formed with the electrical connector. This allows for the simultaneous fabrication of both the capacitor shield and the electrical connector, simplifying the button's circuit structure and the number of components.

[0024] In one possible implementation of the first aspect, there is one mechanical switch located in the middle of the cantilever. The pressure sensor includes a first pressure sensor and a second pressure sensor. The projection of the first pressure sensor onto the pressing surface is located on one side of the mechanical switch, and the projection of the second pressure sensor onto the pressing surface is located on the other side of the mechanical switch. This allows for a longer button length and reduces button wobble during pressing, thus improving button stability. Simultaneously, the two mechanical switches can each perform different functions, increasing the button's functionality. Furthermore, placing the two mechanical switches at both ends of the cantilever allows for the use of only one pressure sensor to detect cantilever deformation between the two switches, simplifying the number of button components and reducing button manufacturing costs.

[0025] In one possible implementation of the first aspect, there are two mechanical switches located at both ends of the cantilever, with the projection of the pressure sensor onto the pressing surface positioned between the two mechanical switches. This allows for the detection of the pressing force on the button by using two pressure sensors to detect the deformation of the cantilever when only one mechanical switch is needed or when the button length is short. Furthermore, the arrangement of the two pressure sensors provides more stable detection results and improves the accuracy of pressing force detection.

[0026] In one possible implementation of the first aspect, the electrical connector includes a flexible circuit board or metal wires. When a flexible circuit board is used as the electrical connector, its high wiring density improves the stability and efficiency of the electrical signal transmission of the button. Furthermore, the flexible circuit board's good bending performance allows it to be bent and connected between different components of the button, improving the button's space utilization efficiency.

[0027] In one possible implementation of the first aspect, the pressure sensor includes at least one of a piezoresistive pressure sensor, a metal strain gauge pressure sensor, a MEMS pressure sensor, a piezoelectric pressure sensor, or an ultrasonic pressure sensor. Among these, the Wheatstone bridge sensor exhibits strong anti-interference capability, high detection accuracy, and high sensitivity, thereby improving the control precision of the buttons.

[0028] In one possible implementation of the first aspect, the keycap material includes at least one of plastic, ceramic, sapphire, rubber, epoxy resin, or other plastics. This allows for the acquisition of the corresponding properties of the material. For example, sapphire has extremely high hardness, wear resistance, and light transmittance; using sapphire as the keycap material can improve the keycap's lifespan.

[0029] In one possible implementation of the first aspect, the keycap is formed using a dispensing process, and the capacitive sensor is located within the dispensing layer of the keycap. This improves the waterproof performance of the capacitive sensor.

[0030] In one possible implementation of the first aspect, the keycap is formed simultaneously with the encapsulated capacitive sensor. This provides physical protection for the capacitive sensor and simplifies the manufacturing process, improving production efficiency.

[0031] In a second aspect, this application provides an electronic device, comprising: a housing; and a button as described in any of the first aspects, wherein the housing forms a base and the button is disposed on the housing.

[0032] In one possible implementation of the second aspect, the housing includes a frame and a back cover; the electronic device also includes a screen, the frame being located between the screen and the back cover and connected to the back cover; the frame forms a base, and buttons are disposed on the frame.

[0033] Since the electronic device provided in the second aspect of the present application includes buttons as described in any of the above technical solutions, both can solve the same technical problem and achieve the same technical effect. Attached Figure Description

[0034] Figure 1 Perspective views of electronic devices provided in some embodiments of this application;

[0035] Figure 2 for Figure 1 A schematic diagram of the exploded structure of the electronic device shown.

[0036] Figure 3 A schematic cross-sectional view of a mechanical button provided in some embodiments of this application;

[0037] Figure 4 This is a schematic diagram of the cross-sectional structure of a button provided in some embodiments of this application;

[0038] Figure 5 Schematic diagrams of the cross-sectional structure of buttons provided in other embodiments of this application;

[0039] Figure 6 This application provides schematic diagrams illustrating the operation of capacitive sensors according to some embodiments.

[0040] Figure 7 This is a schematic diagram of the keycap adhesive mounting process.

[0041] Figure 8 This is a schematic diagram of the keycap molding process;

[0042] Figure 9 A circuit block diagram of a Wheatstone bridge pressure sensor provided for some embodiments of this application;

[0043] Figure 10 This is a schematic diagram of the resistor arrangement for a Wheatstone full-bridge pressure sensor.

[0044] Figure 11 This is a schematic diagram of the resistor arrangement for a Wheatstone half-bridge pressure sensor.

[0045] Figure 12 This is a schematic diagram of the resistor arrangement for a Wheatstone 1 / 4 bridge pressure sensor.

[0046] Figure 13 A schematic diagram illustrating the action of pressing a button provided in some embodiments of this application with a finger;

[0047] Figure 14 This is a schematic diagram of the cross-sectional structure of a button provided in some embodiments of this application;

[0048] Figure 15A schematic diagram illustrating the pressing of a button provided in other embodiments of this application by a finger;

[0049] Figure 16 A schematic diagram showing the arrangement of pressure sensors when there is only one mechanical switch;

[0050] Figure 17 A schematic cross-sectional view of a button provided in some embodiments of this application;

[0051] Figure 18 for Figure 17 A cross-sectional structural diagram of the provided button when it uses a mechanical switch;

[0052] Figure 19 Schematic diagram of the cross-sectional structure of the button provided in other embodiments of this application;

[0053] Figure 20 Schematic diagrams of the cross-sectional structure of buttons provided for other embodiments of this application;

[0054] Figure 21 for Figure 20 A cross-sectional structural diagram of the provided button when it uses a mechanical switch;

[0055] Figure 22 A schematic diagram of the cross-sectional structure of a button provided in other embodiments of this application;

[0056] Figure 23 A schematic cross-sectional view of a button provided for other embodiments of this application;

[0057] Figure 24 for Figure 23 A cross-sectional structural diagram of the provided button when it uses a mechanical switch;

[0058] Figure 25 A schematic cross-sectional view of a button provided for other embodiments of this application;

[0059] Figure 26 for Figure 25 A cross-sectional structural diagram of the provided button when it uses a mechanical switch;

[0060] Figure 27 A schematic cross-sectional view of a button provided for other embodiments of this application;

[0061] Figure 28 A schematic cross-sectional view of a button provided for other embodiments of this application;

[0062] Figure 29 A schematic cross-sectional view of a button provided for other embodiments of this application;

[0063] Figure 30 A schematic cross-sectional view of a button provided for other embodiments of this application;

[0064] Figure 31 for Figure 30 A schematic diagram of the cross-sectional structure of the provided button when two mechanical switches are used;

[0065] Figure 32 A schematic cross-sectional view of a button provided for other embodiments of this application;

[0066] Figure 33 for Figure 32 The provided button is a cross-sectional structural diagram when it uses a mechanical switch.

[0067] Figure label:

[0068] Electronic device 10; screen 1; housing 2; back cover 21; frame 22; middle plate 23; button 3; keycap 31; pressing surface S1; electrical connector 33; first electrical connector 331; second electrical connector 332; mechanical switch 34; transmission component 32; base 35; bottom wall 35a; side wall 35b; groove a1; first opening k1; cantilever 36; printed circuit board 391; dam 3a; conductive part 3b; pressure sensor 37; first pressure sensor 371; second pressure sensor 372; capacitive sensor 38; capacitive sensor array 38a; adhesive layer 3c; capacitor shield 39; first groove 39a; rigid-flex plate 392; receiving cavity q1;

[0069] First bridge arm m1; second bridge arm m2; third bridge arm m3; fourth bridge arm m4; resistor m; first excitation application terminal a; second excitation application terminal b; first output terminal c; second output terminal d. Detailed Implementation

[0070] In the embodiments of this application, the terms "exemplarily" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplarily" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design solutions. Specifically, the use of terms such as "exemplarily" or "for example" is intended to present the relevant concepts in a specific manner.

[0071] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0072] In the description of embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0073] This application provides an electronic device, which is a type of device with buttons. The buttons based on this invention can be used as camera focus shutter buttons, game shoulder buttons, multi-function buttons, and other scenarios that require detection of combined operations such as pressing and sliding. They can be used as efficient interactive buttons in a variety of electronic products. Specifically, electronic devices can be user equipment (UE) or terminal devices, such as cameras, game consoles, portable Android devices (PADs), personal digital assistants (PDAs), mobile phones, and other handheld devices with wireless communication capabilities; computing devices; in-vehicle devices; wearable devices; virtual reality (VR) terminal devices; augmented reality (AR) terminal devices; wireless terminals in industrial control; wireless terminals in self-driving; wireless terminals in remote medical care; wireless terminals in smart grids; wireless terminals in transportation safety; wireless terminals in smart cities; wireless terminals in smart homes; medical supplies; electric toothbrushes, and other mobile or fixed terminals. The embodiments of this application do not specifically limit the form of the electronic device.

[0074] Please see Figure 1 , Figure 1 This is a perspective view of an electronic device 10 provided in some embodiments of this application. The electronic device 10 includes a screen 1, a housing 2, and buttons 3.

[0075] Understandable Figure 1The illustration schematically shows some components included in the electronic device 10, the actual shape, size, location, and construction of which are not affected by the actual shape, size, location, and construction of the components. Figure 1 The limitations. In some other embodiments, the electronic device 10 may also not include the screen 1.

[0076] Screen 1 is used to display images, videos, etc. Screen 1 may include a light-transmitting cover and a display screen. The light-transmitting cover and the display screen are stacked together. The light-transmitting cover is mainly used to protect the display screen and prevent dust. The material of the light-transmitting cover includes, but is not limited to, glass. The display screen can be a flexible display screen or a rigid display screen. For example, the display screen can be an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode (AMOLED) display screen, a mini light-emitting diode display screen, a micro light-emitting diode display screen, a micro organic light-emitting diode display screen, a quantum dot light-emitting diode (QLED) display screen, or a liquid crystal display (LCD).

[0077] The housing 2 is used to protect the internal electronic components of the electronic device 10. (See also...) Figure 2 , Figure 2 for Figure 1 The exploded view of the electronic device 10 shown shows that the housing 2 may include a back cover 21 and a frame 22.

[0078] The back cover 21 is located on the back side of the screen 1 and is spaced apart from the screen 1. Here, the back side of the screen 1 refers to the side of the screen 1 that is away from the display surface, and the display surface refers to the surface on the screen 1 used to display video and images.

[0079] The bezel 22 is located between the back cover 21 and the screen 1. The bezel 22 is fixed to the back cover 21. Exemplarily, the bezel 22 can be fixedly connected to the back cover 21 by adhesive. The bezel 22 can also be integrally formed with the back cover 21, that is, the bezel 22 and the back cover 21 are a single structure. The screen 1 is fixedly connected to the bezel 22.

[0080] In some embodiments, please continue reading Figure 2The housing 2 also includes a middle plate 23. The middle plate 23 is located between the screen 1 and the back cover 21, and is fixed to the frame 22. For example, the middle plate 23 can be fixed to the frame 22 by welding. The middle plate 23 can also be integrally formed with the frame 22. The structural component composed of the middle plate 23 and the frame 22 can be called the middle frame, which serves as the structural "skeleton" of the electronic device 10, used to support and fix the internal electronic components of the electronic device 10.

[0081] The internal electronic components of the electronic device 10 include, but are not limited to, a motherboard, a sub-board, a chip, a battery, a speaker module, a camera module, an earpiece, and a vibration motor. The chip can be used to trigger corresponding functions of the electronic device 10 based on the operation of button 3.

[0082] A cavity is formed between the middle plate 23 and the back cover 21, which is used to house the internal electronic components of the aforementioned electronic device 10.

[0083] Button 3 can be set on the frame 22 as a side button of the electronic device 10, or on the screen 1 as a front button of the electronic device 10, or on the back cover 21 as a rear button of the electronic device 10.

[0084] This embodiment and the embodiments described below use the button 3 set on the frame 22 as a side button of the electronic device 10 for illustrative purposes. This should not be considered as a special limitation of this application.

[0085] Button 3 is used to trigger one or more functions of electronic device 10, such as powering on, powering off, turning the screen on / off, adjusting volume, turning pages, taking photos, etc.

[0086] Please see Figure 3 , Figure 3 This is a cross-sectional structural diagram of a mechanical button 3 provided in some embodiments of this application, wherein the button 3 includes a keycap 31, a mechanical switch 34, and a transmission member 32 located between the keycap 31 and the mechanical switch 34.

[0087] The keycap 31 has a pressing surface S1. In use, the user presses the pressing surface S1 to press the keycap 31 and push the transmission member 32 towards the mechanical switch 34. The transmission member 32 compresses the mechanical switch 34, forcing it to deform, thereby triggering an electrical signal to control the electronic device 10 to perform the corresponding function. The mechanical switch 34 provides a distinct tactile feedback, allowing the user to clearly perceive whether an operation has been performed, thus avoiding accidental triggering.

[0088] A groove a1 is provided on the outer surface of the frame 22, and the button 3 is installed in the groove a1. To facilitate the user's pressing operation of the button 3, the pressing surface S1 of the button 3 can be located outside the opening of the groove a1. The pressing surface S1 is the part that the user contacts when pressing the button 3. The mechanical switch 34 can be located on the side of the keycap 31 away from the pressing surface S1. The mechanical switch 34 is electrically connected to a chip on the main circuit board or sub-circuit board inside the electronic device 10 via an electrical connector 33, such as a wire, to control the electronic device 10 to perform corresponding functions. For example, the mechanical switch 34 is electrically connected to a metal wire, and then connected to a chip inside the electronic device 10 via the metal wire. Figure 3 Electrical connection (not shown).

[0089] The implementation scheme of mechanical button 3 is to convert mechanical pressing into an electrical signal, and button 3 can be turned on or off under the action of external force; however, the function design of mechanical button 3 is simple, and a single button 3 can usually only correspond to one function.

[0090] Therefore, please refer to Figure 4 , Figure 4 This is a cross-sectional structural diagram of a button 3 provided in some embodiments of this application. The button 3 includes a keycap 31, an electrical connector 33, a mechanical switch 34, and a base 35. The button 3 is electrically connected to a chip inside the electronic device 10 via the electrical connector 33.

[0091] This application does not limit the electrical connection method between the electrical connector 33 and the chip. For example, the electrical connector 33 can first be connected to the circuit board inside the electronic device 10, and then electrically connected to the chip through the traces on the circuit board.

[0092] The electrical connector 33 is used to transmit the electrical signal from the button 3 to the chip inside the electronic device 10, whereby the chip processes the electrical signal and converts it into a control signal to control the electronic device 10 to perform the corresponding function. This application does not limit the structure of the electrical connector 33. Exemplarily, the electrical connector 33 includes a flexible printed circuit board (FPC), metal wires, etc. When using a flexible printed circuit board as the electrical connector 33, its high wiring density improves the stability and efficiency of the electrical signal transmission from the button 3. Simultaneously, the flexible printed circuit board's excellent bending performance allows it to bend and connect different components between the various parts of the button 3, improving the space utilization efficiency of the button 3.

[0093] The base 35 includes a groove a1, and a keycap 31, an electrical connector 33, and a mechanical switch 34 are stacked within the groove a1. The base 35 also includes a first opening k1, through which the electrical connector 33 passes and is electrically connected to the chip.

[0094] In some embodiments, the base 35 may be part of the housing 2 of the electronic device 10, i.e., the groove a1 is formed on the housing 2 of the electronic device 10 so that the button 3 is disposed on the housing 2. It is understood that in other embodiments, the base 35 may also be a separate structural component inside or on the surface of the electronic device 10.

[0095] The keycap 31 has a pressing surface S1, which is used to contact the user's fingers to withstand the pressing pressure from the fingers. The keycap 31 is used to transmit the pressure received by the pressing surface S1 to the mechanical switch 34.

[0096] Mechanical switch 34 provides a mechanical feel for button 3 and is electrically connected to electrical connector 33. When pressure is applied, mechanical switch 34 is turned on; when no pressure is applied, mechanical switch 34 is turned off. When mechanical switch 34 is turned on, the internal circuitry of the electronic device 10 corresponding to mechanical switch 34 is connected, thereby triggering an electrical signal to control the electronic device 10 to perform the corresponding function.

[0097] This application does not limit the structure of the mechanical switch 34. Exemplarily, the mechanical switch 34 includes a dome switch, a micro switch, a mechanical shaft, etc. Among them, the dome switch has stable rebound, good feel, and can adapt to various surface treatments; the micro switch has reliable switching and high precision; the mechanical shaft has a good feel, pleasant sound, and high playability.

[0098] The dome switch, also known as a metal spring conductive film, is a membrane switch containing a metal spring. When pressed, the center point of the spring dips down, contacting the circuit and forming a conductive loop. Typically, button 3 includes a keycap 31 with a dome switch underneath. Pressing the keycap 31 activates the dome switch, and releasing it deactivates it. When the dome switch is activated, the internal circuitry of the electronic device 10 is connected, triggering an electrical signal to control the device to perform its corresponding function. Simultaneously, the dome switch provides noticeable tactile feedback when pressed, which is transmitted to the keycap 31, allowing the user to clearly perceive whether button 3 has been pressed, thus improving operational accuracy.

[0099] The key 3 also includes a cantilever 36 and a pressure sensor 37. The cantilever 36 is located on the side of the keycap 31 that is away from the pressing surface S1. The cantilever 36 is used to deform under the pressing pressure from the keycap 31.

[0100] This application does not limit the material of the cantilever 36. Exemplarily, the material of the cantilever 36 includes steel, copper, aluminum, polymer materials, or fiber composite materials. This improves the deformability of the cantilever 36 and increases the pressure detection sensitivity of the button 3.

[0101] The cantilever 36 is connected to the electrical connector 33, and the pressure sensor 37 is electrically connected to the electrical connector 33. The electrical connector 33 is used to transmit the deformation of the cantilever 36 to the pressure sensor 37, and the pressure sensor 37 is used to detect the deformation of the cantilever 36.

[0102] It should be noted that, Figure 4 The position of the cantilever 36 shown does not constitute a limitation on this application. The arrangement of the cantilever 36 will be described in detail later.

[0103] In use, the user presses the pressing surface S1 of the keycap 31, transmitting the pressure to the cantilever 36 and the mechanical switch 34. The cantilever 36 deforms under the pressure, and the pressure sensor 37 transmits the detected deformation of the cantilever 36 to the chip inside the electronic device 10 via the electrical connector 33. The chip processes and calculates the pressure value of the keycap 31. Different pressure levels trigger different functions of the electronic device 10. In some examples, a pressure not exceeding a first pressure value is defined as a light press, and a pressure exceeding the first pressure value is defined as a heavy press. Light presses and heavy presses trigger different functions of the electronic device 10; for example, a light press brings up a menu, while a heavy press controls the electronic device 10 to take a picture. Simultaneously, the first pressure value is the trigger pressure value of the mechanical switch 34; that is, when the user presses the keycap 31, the mechanical switch 34 deforms under pressure, activating the corresponding circuit and providing corresponding tactile feedback.

[0104] The above embodiment uses button 3 to include two pressure levels: light press and heavy press. It is understood that in other examples, button 3 may also include more pressure levels, such as light press, medium press, heavy press, etc., and trigger different functions of electronic device 10 accordingly. The pressure values ​​of different pressure levels and the corresponding triggered functions can be designed according to the specific application scenario of button 3 in electronic device 10, and this application does not impose any limitations on this.

[0105] In this way, while retaining the mechanical switch 34, button 3 can also recognize the applied pressure and trigger the corresponding function, increasing the number of functions of a single button 3. Furthermore, compared to embodiments where components such as keycap 31, electrical connector 33, mechanical switch 34, and cantilever 36 are assembled sequentially on the base 35, the button 3 provided in this application has keycap 31, electrical connector 33, and mechanical switch 34 stacked within the groove a1 of the base 35, simplifying the transmission path of the applied pressure and reducing the structural complexity of the button 3. In addition, due to the simple structure of button 3, the various components of button 3 can be assembled into a whole in a separate process before being installed into the groove a1 of the base 35, improving the modularity of button 3. Moreover, the electrical connector 33 connects the components of button 3 to the chip inside the electronic device 10. When replacing button 3, only the connection between the electrical connector 33 and other components inside the electronic device 10 needs to be disconnected for the entire button 3 to be replaced, simplifying the operation and reducing the production and installation costs of button 3.

[0106] In some embodiments, please refer to Figure 5 , Figure 5 The diagram shows a cross-sectional view of the button 3 provided in other embodiments of this application. The button 3 also includes a capacitive sensor 38, which is located between the keycap 31 and the electrical connector 33. Multiple capacitive sensors 38 are provided and spaced apart. The capacitive sensors 38 are electrically connected to the electrical connector 33 and are used to detect the sliding of a finger on the pressing surface S1.

[0107] This application does not limit the electrical connection method between the capacitive sensor 38 and the electrical connector 33. In some examples, the capacitive sensor 38 can be electrically connected to the electrical connector 33 through a conductive structure. In other examples, the capacitive sensor 38 can also be integrally formed with the electrical connector 33, that is, the capacitive sensor 38 can be formed on the surface of the electrical connector 33 by electroplating or other methods when manufacturing the electrical connector 33. This facilitates processing.

[0108] This application does not limit the number of capacitive sensors 38. For example, the number of capacitive sensors 38 can be 3, 4, 5, 6, 7, 8, 9, etc. Figure 5 The example used is a 38-cell capacitive sensor with 8 cells.

[0109] Please see Figure 6 , Figure 6This is a schematic diagram illustrating the operation of a capacitive sensor 38 provided in some embodiments of this application. Multiple spaced capacitive sensors 38 form a capacitive sensor array 38a. When a finger slides across the capacitive sensor array 38a, a new capacitive coupling is formed between the finger and the array 38a because the human body is conductive. When a finger approaches or touches the capacitive sensor array 38a, the capacitance value in that area increases; when the finger leaves, the capacitance value decreases. Simultaneously, triggering one capacitive sensor 38 also triggers other capacitive sensors 38. The capacitance signal of the capacitive sensor array 38a is transmitted to a chip inside the electronic device 10 via an electrical connector 33. The chip calculates the trigger center position, and the change in the position of the triggered capacitive sensor 38 indicates the change in the finger's position on the keycap 31, corresponding to different functions of the electronic device 10. Therefore, by observing the changing patterns of the capacitance values ​​of multiple capacitive sensors 38, the user's finger gestures on the keycap 31, such as swiping up, down, left, or right, can be identified, and different functions of the electronic device 10 can be triggered accordingly. For example, swiping up increases the volume, swiping up increases the shooting magnification, swiping down decreases the volume, swiping down decreases the shooting magnification, etc. This application does not limit these actions.

[0110] In this way, while retaining the mechanical switch 34, button 3 can also recognize the pressure applied to button 3, identify the direction of movement of the user's finger on the pressing surface S1, and trigger the corresponding function, thus increasing the number of functions of a single button 3. Furthermore, compared to embodiments where the keycap 31, capacitive sensor 38, electrical connector 33, mechanical switch 34, and cantilever 36 are assembled sequentially on the electronic device 10, the button 3 provided in this application has the keycap 31, capacitive sensor 38, electrical connector 33, and mechanical switch 34 stacked within the groove a1 of the base 35, simplifying the transmission path of the pressure applied to button 3 and reducing the structural complexity of button 3. In addition, due to the simple structure of button 3, the various structures within button 3 can be assembled into a single unit in a separate process before being installed into the groove a1, enhancing the modularity of button 3. Furthermore, the electrical connector 33 enables the structure in the button 3 to be electrically connected to the chip inside the electronic device 10. When replacing the button 3, it is only necessary to disconnect the electrical connector 33 from other components inside the electronic device 10 to replace the button 3 as a whole. The operation is simple and helps to reduce the production and installation costs of the button 3.

[0111] The material of the keycap 31 can be selected based on the material of the housing 2 of the electronic device 10. For example, the material of the keycap 31 includes at least one of plastic, ceramic, sapphire, rubber, epoxy resin, or other plastics. This allows for the acquisition of the corresponding properties of the material. For example, sapphire has extremely high hardness, wear resistance, and light transmittance; using sapphire as the keycap 31 can improve the service life of the keycap 31.

[0112] The manufacturing process of the keycap 31 varies depending on the material used, and this application does not impose any limitations on this. For an example, please refer to [link to example]. Figure 7 , Figure 7 This is a schematic diagram of the adhesive bonding process for keycap 31. When the material of keycap 31 includes materials such as plastic, ceramic, sapphire, and rubber, adhesive bonding can be used to bond keycap 31 and seal capacitive sensor 38 within the adhesive layer 3c to improve the waterproof performance of capacitive sensor 38.

[0113] It should be noted that the following embodiments use the keycap 31 with a dispensing process as an example for illustration, which does not constitute a limitation of this application.

[0114] In other embodiments, please refer to Figure 8 , Figure 8 This is a schematic diagram of the molding process for keycap 31. When the material of keycap 31 includes epoxy resin, plastic, etc., the capacitive sensor 38 is molded using a molding process to simultaneously form keycap 31. This provides physical protection for the capacitive sensor 38, simplifies the production process, and improves production efficiency.

[0115] It should be noted that in the above embodiments and subsequent embodiments, the example provided is that the button 3 includes a capacitive sensor 38, which does not constitute a limitation of this application. In other embodiments, when the button 3 does not include a capacitive sensor 38, the keycap 31 can also be directly connected to other structural components in the button 3.

[0116] This application does not limit the structure of the pressure sensor 37, as long as the pressure sensor 37 can convert the pressure signal into an electrical signal. For example, the pressure sensor 37 may include at least one of the following: a piezoresistive pressure sensor 37, a metal strain gauge pressure sensor 37, a Wheatstone bridge-based pressure sensor 37, a microelectromechanical system (MEMS) pressure sensor 37, a piezoelectric pressure sensor 37, or an ultrasonic pressure sensor 37.

[0117] Please see Figure 9 , Figure 9The diagram below shows a circuit block diagram of a Wheatstone bridge pressure sensor 37 provided in some embodiments of this application. The Wheatstone bridge pressure sensor 37 typically includes four arms: a first arm m1, a second arm m2, a third arm m3, and a fourth arm m4, each arm formed by a resistor m. The arrangement of the four arms is not limited to the diamond arrangement shown; it can also be rectangular or square. The Wheatstone bridge sensor has two excitation application terminals: a first excitation application terminal and b second excitation application terminal; the Wheatstone bridge sensor also has two output terminals: a first output terminal c and a second output terminal d.

[0118] When an excitation voltage is applied to the Wheatstone bridge sensor via the first and second excitation application terminals, and the cantilever 36 bends, the four bridge arms also bend and deform, causing a change in the resistance of the four bridge arms, which in turn changes the output voltage of the first output terminal c and the second output terminal d. The output voltages of the first output terminal c and the second output terminal d are positively correlated with the amount of bending of the cantilever 36, thereby realizing the detection of the amount of bending deformation.

[0119] In specific arrangements, depending on the number of resistors involved in the deformation, the Wheatstone bridge pressure sensor 37 can be divided into three configurations: Wheatstone full bridge, Wheatstone half bridge, and Wheatstone 1 / 4 bridge.

[0120] Please see Figure 10 , Figure 10 This diagram illustrates the resistor arrangement of the Wheatstone full-bridge pressure sensor 37. A Wheatstone full-bridge refers to a Wheatstone bridge in which all four resistors m participate in the measurement. In the full-bridge configuration, all four resistors m can be strain gauges or other types of sensors, capable of sensing changes in the physical quantity of deformation and converting them into changes in resistance values. Two resistors of the full-bridge are placed along the long side of the keycap 31, and the other two resistors m are placed along the short side of the keycap 31. The shape of each resistor m is as slender as possible to minimize the resistance value change caused by deformation in the width direction. Simultaneously, the two sets of resistors m along the long and short sides of the keycap 31 form a differential, thereby detecting the overall deformation of the cantilever 36. The full-bridge configuration maximizes the utilization of the influence of resistance value changes on the bridge balance, improving the sensitivity and accuracy of the detection.

[0121] Please see Figure 11 , Figure 11This diagram illustrates the resistor arrangement of the Wheatstone half-bridge pressure sensor 37. A Wheatstone half-bridge refers to a Wheatstone bridge circuit where only two resistors *m* are involved in the measurement. In a half-bridge configuration, there are typically two fixed resistors and two variable resistors. To save space, the two fixed resistors with small changes can be removed, converting a full bridge to a half-bridge, thereby reducing the number of wires on the pressure sensor 37. In this case, the two fixed resistors can be placed on other structural components within the electronics 10 as reference resistors to provide a reference voltage for comparing changes in the variable resistors.

[0122] Please see Figure 12 , Figure 12 This diagram illustrates the resistor arrangement of a Wheatstone quarter-bridge pressure sensor 37. A Wheatstone quarter-bridge refers to a Wheatstone bridge with only one resistor m involved in the measurement. In a quarter-bridge configuration, there are typically three fixed resistors and one variable resistor, or one sensor and three fixed resistors. To save cost and space, the Wheatstone half-bridge can be further simplified by replacing the full bridge with a quarter-bridge. In this case, the three fixed resistors can be placed on other structural components within the electronic device 10 as reference resistors.

[0123] The Wheatstone bridge sensor has strong anti-interference capability, high detection accuracy and sensitivity, and can improve the control accuracy of button 3. It should be noted that in all embodiments of this application, the pressure sensor 37 can be one or more of the aforementioned pressure sensors 37. When using a pressure sensor 37 based on the Wheatstone bridge principle, one or more resistor arrangements of full bridge, half bridge, or 1 / 4 bridge can be used. The pressure sensor 37 and the cantilever 36 constitute the pressure sensing component of button 3, and the detection value of the pressure sensor 37 reflects the pressure applied by the user to the keycap 31.

[0124] The number of mechanical switches 34 can be selected based on the length of the button 3 and its designed function. In some embodiments, such as Figure 5 As shown, there are two mechanical switches 34, located at both ends of the cantilever 36. The projection of the pressure sensor 37 onto the pressing surface S1 is located between the two mechanical switches 34. This allows for a longer button length and reduces wobbling during pressing, thus improving the stability of the button 3. Simultaneously, the two mechanical switches 34 can each perform different functions, increasing the functionality of the button 3. Furthermore, placing the two mechanical switches 34 at both ends of the cantilever 36 allows for the use of only one pressure sensor 37 to detect deformation of the cantilever 36, simplifying the number of components in the button 3 and reducing its manufacturing cost.

[0125] When there are two mechanical switches 34, please refer to Figure 13 , Figure 13This is a schematic diagram of a finger pressing the button 3 provided in some embodiments of this application. When the user's finger presses the button 3, the entire button 3 module deforms downward, causing the cantilever 36 between the two mechanical switches 34 to deform. The pressure sensor 37 detects the deformation and transmits it to the chip to obtain the corresponding pressing force.

[0126] In other embodiments, please refer to Figure 14 , Figure 14 The diagram shows a cross-sectional view of the button 3 in some embodiments of this application. There is one mechanical switch 34 located in the middle of the cantilever 36. The pressure sensor 37 includes a first pressure sensor 371 and a second pressure sensor 372. The projection of the first pressure sensor 371 onto the pressing surface S1 is located on one side of the mechanical switch 34, and the projection of the second pressure sensor 372 onto the pressing surface S1 is located on the other side of the mechanical switch 34. In this way, when only one mechanical switch 34 is needed, or when the button 3 is short, the deformation of the cantilever 36 can be detected by both pressure sensors 37, thereby obtaining the pressing force on the button 3. Simultaneously, the arrangement of the two pressure sensors 37 can provide more stable detection results and improve the accuracy of pressing force detection.

[0127] When mechanical switch 34 is one, such as Figure 15 As shown, Figure 15 This is a schematic diagram of a finger pressing button 3 provided in other embodiments of this application. When a user's finger presses on button 3, the entire button 3 module deforms downwards, causing the cantilever 36 on both sides of the mechanical switch 34 to deform. Two pressure sensors 37 detect the deformation of the cantilever 36 on both sides of the mechanical switch 34, and the chip processes the deformation data obtained by the two pressure sensors 37 to obtain the corresponding pressing force.

[0128] Similarly, when button 3 includes a mechanical switch 34 and two pressure sensors 37, the first pressure sensor 371 and the second pressure sensor 372 can also employ one or more sensors used in the above embodiments. When the first pressure sensor 371 and the second pressure sensor 372 are based on a Wheatstone bridge, please refer to [link to relevant documentation]. Figure 16 , Figure 16 The diagram shows the arrangement of the pressure sensor 37 when there is only one mechanical switch 34. The first pressure sensor 371 and the second pressure sensor 372 can also be arranged using a Wheatstone full bridge, a Wheatstone half bridge or a Wheatstone quarter bridge, respectively. The corresponding working principle is the same as described above, and will not be repeated here.

[0129] It should be noted that the button 3 in each embodiment of this application can be configured with one mechanical switch 34 or two mechanical switches 34, and the corresponding technical effects are the same as described above.

[0130] The above embodiments have explained the working principles of the pressure sensing component, capacitive sensor array 38a, and mechanical switch 34 in button 3. The combination of the pressure sensing component, capacitive sensor array 38a, and mechanical switch 34 can trigger different functions of the electronic device 10. The following describes the arrangement of the cantilever 36 in the pressure sensing component.

[0131] Please continue reading. Figure 4 The cantilever 36 is located between the keycap 31 and the electrical connector 33; the mechanical switch 34 is located on the side of the electrical connector 33 away from the cantilever 36. In this way, when the cantilever 36 deforms, the deformation is transmitted to the pressure sensor 37 via the electrical connector 33, and the deformation detected by the pressure sensor 37 is transmitted to the chip inside the electronic device 10 via the electrical connector 33, thus obtaining the pressing force of the key 3. Simultaneously, the electrical connector 33 is electrically connected to the mechanical switch 34, allowing one electrical connector 33 to transmit electrical signals from both the mechanical switch 34 and the pressure sensor simultaneously, simplifying the circuit structure and component count of the key 3 and reducing its manufacturing cost.

[0132] In other embodiments, when the button includes a capacitive sensor 38, please refer to [reference needed]. Figure 17 , Figure 17 The schematic diagram of the cross-sectional structure of the button 3 provided in some embodiments of this application shows that the electrical connector 33 includes a first electrical connector 331 and a second electrical connector 332; the first electrical connector 331 and the second electrical connector 332 are electrically connected; the first electrical connector 331 is located between the capacitive sensor 38 and the mechanical switch 34, and the first electrical connector 331 is electrically connected to the capacitive sensor 38.

[0133] The groove a1 includes a bottom wall 35a and a side wall 35b connected to the bottom wall 35a. The keycap 31, capacitive sensor 38, first electrical connector 331, mechanical switch 34 and bottom wall 35a are stacked together.

[0134] The second electrical connector 332 is either in close contact with or spaced from the bottom wall 35a. The cantilever 36 is connected to the second electrical connector 332. The pressure sensor 37 is electrically connected to the second electrical connector 332. The second electrical connector 332 is used to transmit the deformation of the cantilever 36 to the pressure sensor 37.

[0135] in, Figure 17 The cantilever 36 is positioned between the first electrical connector 331 and the second electrical connector 332, and the cantilever 36 is spaced apart from the bottom wall 35a, as an example for illustration. This does not constitute a limitation of this application. An embodiment in which the cantilever 36 is in close contact with the bottom wall 35a will be described later.

[0136] In this way, the electrical signal from the sensor can be transmitted to the chip inside the electronic device 10 via the first electrical connector 331 to identify the sliding direction of the user on the pressing surface S1 of the keycap 31. Simultaneously, the deformation of the cantilever 36 is transmitted to the pressure sensor 37 via the second electrical connector 332, and the deformation detected by the pressure sensor 37 is transmitted to the chip inside the electronic device 10 via the second electrical connector 332, thereby obtaining the pressing force of the button 3. Furthermore, the first electrical connector 331 and the second electrical connector 332 are electrically connected, allowing them to be integrated into a single circuit or integrally formed before being connected to the chip inside the electronic device 10. This reduces the structural complexity of the button 3 and lowers its manufacturing cost.

[0137] in, Figure 17 The example described uses button 3, which includes two mechanical switches 34. In other embodiments, please refer to... Figure 18 , Figure 18 for Figure 17 The provided diagram shows a cross-sectional structure of button 3 when it uses one mechanical switch 34. Button 3 may also include only one mechanical switch 34. The working principle and corresponding technical effects of button 3 including one mechanical switch 34 and button 3 including two mechanical switches are as described above and will not be repeated here.

[0138] When button 3 includes a pressure sensor 37 and a capacitance sensor 38, please refer to Figure 19 , Figure 19 The diagram shows a cross-sectional view of the button 3 provided in other embodiments of this application. The button 3 also includes a capacitor shield 39, which is located between the capacitive sensor 38 and the pressure sensor 37. Thus, the capacitor shield 39 can block the capacitive sensors 38 and 37 on both sides, shielding at least part of the capacitive interference between the capacitive sensors 38 and 37, reducing the capacitive coupling between the capacitive sensors 38 and 37, and improving the operating sensitivity of the button 3.

[0139] This application does not limit the structure of the capacitor shield 39. Exemplarily, the capacitor shield 39 includes a printed circuit board 391, an aluminum shielding plate, a copper shielding plate, and a conductive polymer material plate. When the capacitor shield 39 is a printed circuit board 391, a capacitance sensor 38 can also be formed simultaneously during the fabrication of the printed circuit board 391 by electroplating or other methods. The electrical signal of the capacitance sensor 38 can then be transmitted to the electrical connector 33 via the printed circuit board 391, simplifying the circuit structure and component quantity of the button 3 and reducing the manufacturing cost of the button 3.

[0140] in, Figure 19The capacitor shield 39 is illustrated using a printed circuit board 391 as an example. In this case, the printed circuit board 391 is located between the capacitance sensor 38 and the first electrical connector 331. The printed circuit board 391 is electrically connected to both the capacitance sensor 38 and the first electrical connector 331 to transmit the electrical signal from the capacitance sensor 38 to the first electrical connector 331. It is understood that when using a capacitor shield 39 made of other materials, since the capacitor shielding material includes conductive materials, the arrangement of the capacitor shield 39 can also be as described above. Figure 19 As shown, it may be disposed between the capacitive sensor 38 and the first electrical connector 331, or at other locations between the capacitive sensor 38 and the pressure sensor 37; this application does not limit this to any particular location.

[0141] When button 3 includes capacitor shield 39, please refer to Figure 20 , Figure 20 The diagram shows a cross-sectional view of the button 3 in other embodiments of this application. A capacitor shield 39 is located between the capacitor sensor 38 and the electrical connector 33. The capacitor shield 39 includes a first groove 39a, the opening of which faces away from the pressing surface S1. A pressure sensor 37 is located within the first groove 39a. At this time, the pressure sensor 37 is electrically connected to the first electrical connector 331, which transmits the deformation of the cantilever 36 to the pressure sensor 37.

[0142] Therefore, the first groove 39a provides a space for accommodating the pressure sensor 37 and protects it. Simultaneously, the first electrical connector 331 can transmit both the electrical signal from the capacitive sensor 38 (transmitted by the capacitive shield 39) and the electrical signal from the pressure sensor 37, simplifying the circuit structure and number of components of the button 3 and reducing its structural complexity. Furthermore, the second electrical connector 332 only needs to transmit the electrical signal from the mechanical switch 34, thus reducing its area and the amount of material used in the button 3.

[0143] Similarly, Figure 20 The example described uses button 3, which includes two mechanical switches 34. In other embodiments, please refer to... Figure 21 , Figure 21 for Figure 20 The provided diagram shows a cross-sectional structure of button 3 when it uses one mechanical switch 34. Button 3 may also include only one mechanical switch 34. The working principle and corresponding technical effects of button 3 including one mechanical switch 34 and button 3 including two mechanical switches are as described above and will not be repeated here.

[0144] It should be noted that this application does not restrict the connection relationship between the second electrical connector 332 and the first electrical connector 331, as long as the first electrical connector 331 and the second electrical connector 332 are electrically connected. Figure 21 and Figure 22 In the provided button 3, the second electrical connector 332 is formed by bending part of the first electrical connector 331, and is used to transmit the electrical signal of the mechanical switch 34.

[0145] In some embodiments, please continue reading Figure 5 The cantilever 36 includes a printed circuit board 391, which is located between the capacitive sensor 38 and the electrical connector 33. The capacitive sensor 38 is electrically connected to the printed circuit board 391, and the printed circuit board 391 is electrically connected to the electrical connector 33. In this way, the capacitive sensor 38 is electrically connected to the electrical connector 33 via the printed circuit board 391, allowing the electrical connector 33 to connect to the mechanical switch 34, the capacitive sensor 38, and the pressure sensor 37, and to transmit electrical signals. Simultaneously, because the printed circuit board 391 has a certain degree of deformability and capacitive shielding capability, it can simultaneously serve as both the cantilever 36 and the capacitive shield 39. Therefore, by reusing the printed circuit board 391, the circuit structure and number of components of the button 3 are simplified, and the manufacturing cost of the button 3 is reduced.

[0146] Similarly, Figure 5 The example described uses button 3, which includes two mechanical switches 34. For other embodiments, please refer to [the relevant documentation / reference needed]. Figure 14 Button 3 may also include only one mechanical switch 34. The working principle and corresponding technical effects of button 3 including one mechanical switch 34 and button 3 including two mechanical switches are the same as described above, and will not be repeated here.

[0147] It is understood that in some other embodiments, please refer to Figure 22 , Figure 22 The diagram shows a cross-sectional view of the button 3 in other embodiments of this application. The capacitor shield 39 includes a rigid-flex printed circuit board 392 (also known as a rigid-flex PCB), which is integrally formed with the electrical connector 33. This allows for the simultaneous fabrication of both the capacitor shield 39 and the electrical connector 33, simplifying the circuit structure and the number of components in the button 3.

[0148] Similarly, in subsequent embodiments, when the button 3 uses the printed circuit board 391 to electrically connect the capacitive sensor 38 to the electrical connector 33, or uses the printed circuit board 391 as a cantilever 36, as a capacitor shield 39, or as both a cantilever 36 and a capacitor shield 39, the printed circuit board 391 and the electrical connector 33 can be fabricated together. When the electrical connector 33 includes a flexible circuit board, the printed circuit board 391 and the electrical connector 33 together constitute a rigid-flex board 392.

[0149] When using printed circuit board 391 as cantilever 36 or capacitor shield 39, please refer to [reference needed] for improving the waterproof performance of button 3. Figure 23 , Figure 23 The following is a cross-sectional structural diagram of the button 3 provided in some other embodiments of this application. The button 3 also includes a dam 3a, which is located between the printed circuit board 391 and the electrical connector 33 and is connected to the printed circuit board 391 and the electrical connector 33. The printed circuit board 391 and the electrical connector 33 are electrically connected through a conductive part 3b. The dam 3a, the printed circuit board 391 and the circuit board together form a receiving cavity q1. The pressure sensor 37 is located in the receiving cavity q1 and is connected to the printed circuit board 391.

[0150] In this way, the pressure sensor 37 can be directly connected to the printed circuit board 391. When the printed circuit board 391 deforms under pressure, the deformation can be directly transmitted to the pressure sensor 37, improving the detection accuracy of the button 3 in terms of pressure. At the same time, since the pressure sensor 37 is located inside the receiving cavity q1 and is isolated from the outside, it is provided with waterproof protection, improving the waterproof performance of the button 3.

[0151] At this time, glue or similar materials can be used to fill the gap between the printed circuit board 391 and the electrical connector 33, which ensures the connection strength between the printed circuit board 391 and the electrical connector 33, and also allows the pressing force on the pressing surface S1 to be transmitted to the mechanical switch 34 through the printed circuit board 391 and the electrical connector 33.

[0152] This application does not limit the structure of the conductive part 3b, as long as it enables electrical connection between the printed circuit board 391 and the electrical connector 33. For example, the conductive part 3b may include solder joints, metal pillars, etc.

[0153] This application does not impose any restrictions on the structure of the dam 3a, as long as the dam 3a isolates the cavity q1 from the outside world.

[0154] Similarly, Figure 23 The example described uses button 3, which includes two mechanical switches 34. In other embodiments, please refer to... Figure 24 , Figure 24 for Figure 23The provided diagram shows a cross-sectional structure of button 3 when it uses one mechanical switch 34. Button 3 may also include only one mechanical switch 34. The working principle and corresponding technical effects of button 3 including one mechanical switch 34 and button 3 including two mechanical switches are as described above and will not be repeated here.

[0155] This application does not limit the shape of the cantilever 36. In some embodiments, such as Figures 17-24 As shown, the cantilever 36 is flat. This results in a simple structure that is easy to manufacture and install.

[0156] In other embodiments, please refer to Figure 25 and Figure 26 , Figure 25 This is a schematic diagram of the cross-sectional structure of button 3 provided in some other embodiments of this application. Figure 26 for Figure 25 The provided schematic diagram shows the cross-sectional structure of button 3 when it uses a mechanical switch 34. The cantilever 36 is shaped like a U-beam. The U-beam-shaped cantilever 36 provides higher strength and stability, thus improving the service life of button 3.

[0157] In some other embodiments, please refer to Figure 27 , Figure 27 The diagram shows a cross-sectional view of the button 3 provided in some other embodiments of this application. The cantilever 36 is in the shape of a T-beam. The T-beam shape of the cantilever 36 can reduce the amount of material used and lower the manufacturing cost of the button 3 while providing greater bending stiffness.

[0158] in, Figure 27 The following explanation uses button 3, which includes a mechanical switch 34, as an example. The working principle and corresponding technical effects of button 3 including a mechanical switch 34 are the same as described above.

[0159] In some other embodiments, please refer to Figure 28 , Figure 28 The diagram shows a cross-sectional view of the button 3 provided in other embodiments of this application. The cantilever 36 is in the shape of an I-beam. The I-beam shape of the cantilever 36 provides higher bending and torsional stiffness, making it suitable for the design of large buttons 3.

[0160] Similarly, Figure 28 The following explanation uses button 3, which includes a mechanical switch 34, as an example. The working principle and corresponding technical effects of button 3 including a mechanical switch 34 are the same as described above.

[0161] The following describes another way of setting up the cantilever 36 in button 3 provided in this application.

[0162] Please see Figure 29 , Figure 29The diagram shows a cross-sectional view of the button 3 provided in other embodiments of this application. The second electrical connector 332 is tightly connected to the bottom wall 35a, and the cantilever 36 includes the bottom wall 35a. The second electrical connector 332 is used to transmit the deformation of the bottom wall 35a to the pressure sensor 37. Thus, the bottom wall 35a can be used as the cantilever 36, and the deformation of the bottom wall 35a can be detected by the pressure sensor 37 to obtain the pressing force on the button 3, thereby improving the structural stability of the button 3.

[0163] also, Figure 29 The illustration uses the example of the second connector being attached to the bottom wall 35a near the keycap 31. It will be understood that in other embodiments, please refer to... Figure 30 , Figure 30 This is a cross-sectional structural diagram of the button 3 provided in some other embodiments of this application. The second connecting member can also be located on the side of the bottom wall 35a facing away from the pressing surface S1. Therefore, the pressure sensor 37 can be disposed inside the electronic device 10 to provide waterproof protection for the pressure sensor 37 and improve the service life of the button 3.

[0164] in, Figure 30 The example described uses button 3, which includes two mechanical switches 34. In other embodiments, please refer to... Figure 31 , Figure 31 for Figure 30 The provided diagram shows a cross-sectional structure of button 3 when it uses two mechanical switches 34. Button 3 may also include only one mechanical switch 34. The working principle and corresponding technical effects of button 3 with one mechanical switch 34 and button 3 with two mechanical switches are the same as described above and will not be repeated here.

[0165] Similarly, when Figure 30 When the capacitor shield 39 in the provided button 3 includes a printed circuit board, and the first electrical connector 331 and the second electrical connector 332 include a flexible circuit board, please refer to [reference needed]. Figure 32 , Figure 32 The diagram shows a cross-sectional view of the button 3 in other embodiments of this application. The printed circuit board 391 and the flexible circuit can also jointly form a rigid-flex board 392 to simplify the circuit structure and the number of components of the button 3. The description of the rigid-flex board 392 is the same as above and will not be repeated here.

[0166] Similarly, Figure 32 The example described uses button 3, which includes two mechanical switches 34. In other embodiments, please refer to... Figure 33 , Figure 33 for Figure 32The provided schematic diagram shows the cross-sectional structure of button 3 when it uses one mechanical switch 34. The working principle and corresponding technical effects of button 3 when it includes one mechanical switch 34 and button 3 when it includes two mechanical switches are the same as described above, and will not be repeated here.

[0167] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0168] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A button, characterized in that, The button is electrically connected to the chip of the electronic device, and the button includes: a keycap, an electrical connector, a mechanical switch, and a base; The base includes a groove, in which the keycap, the electrical connector, and the mechanical switch are stacked and disposed; the base also includes a first opening, through which the electrical connector passes and is electrically connected to the chip; The keycap has a pressing surface; the keycap is used to transmit the pressure received on the pressing surface to the mechanical switch; the mechanical switch is electrically connected to the electrical connector; The key also includes a cantilever and a pressure sensor. The cantilever is located on the side of the keycap facing away from the pressing surface. The cantilever is used to deform under the pressing pressure from the keycap. The cantilever is connected to the electrical connector, and the pressure sensor is electrically connected to the electrical connector. The electrical connector is used to transmit the deformation of the cantilever to the pressure sensor, and the pressure sensor is used to detect the deformation of the cantilever.

2. The button according to claim 1, characterized in that, The button also includes a capacitive sensor, which is located between the keycap and the electrical connector. There are multiple capacitive sensors arranged at intervals. The capacitive sensors are electrically connected to the electrical connector and are used to detect the sliding of a finger on the pressing surface.

3. The button according to claim 2, characterized in that, The cantilever includes a printed circuit board located between the capacitive sensor and the electrical connector; the capacitive sensor is electrically connected to the printed circuit board, and the printed circuit board is electrically connected to the electrical connector.

4. The button according to claim 3, characterized in that, The button also includes a retaining wall, which is located between the printed circuit board and the electrical connector and is connected to both the printed circuit board and the electrical connector; the printed circuit board and the electrical connector are electrically connected via conductive parts. The dam, the printed circuit board, and the circuit board together form a receiving cavity, and the pressure sensor is located inside the receiving cavity and connected to the printed circuit board.

5. The button according to claim 1, characterized in that, The cantilever is located between the keycap and the electrical connector; the mechanical switch is located on the side of the electrical connector away from the cantilever.

6. The button according to claim 2, characterized in that, The electrical connector includes a first electrical connector and a second electrical connector; the first electrical connector and the second electrical connector are electrically connected; the first electrical connector is located between the capacitive sensor and the mechanical switch, and the first electrical connector is electrically connected to the capacitive sensor; The base includes a bottom wall and a side wall connected to the bottom wall, and the keycap, the capacitive sensor, the first electrical connector, the mechanical switch and the bottom wall are stacked together; The second electrical connector is either in close contact with or spaced from the bottom wall. The cantilever is connected to the second electrical connector, and the pressure sensor is electrically connected to the second electrical connector. The second electrical connector is used to transmit the deformation of the cantilever to the pressure sensor.

7. The button according to claim 6, characterized in that, The second electrical connector is tightly connected to the bottom wall; the cantilever includes the bottom wall, and the second electrical connector is used to transmit the deformation of the bottom wall to the pressure sensor.

8. The button according to claim 7, characterized in that, The second electrical connector is located on the side of the bottom wall opposite to the pressing surface.

9. The button according to any one of claims 5-8, characterized in that, The cantilever can be in the shape of a flat plate, a square beam, a T-shaped beam, or an I-beam.

10. The button according to any one of claims 5-9, characterized in that, The cantilever can be made of steel, copper, aluminum, polymer materials, or fiber composite materials.

11. The button according to any one of claims 2-10, characterized in that, The button also includes a capacitive shield, which is located between the capacitive sensor and the pressure sensor.

12. The button according to claim 11, characterized in that, The capacitor shielding component includes a printed circuit board, an aluminum shielding plate, a copper shielding plate, and a conductive polymer material plate.

13. The button according to claim 11 or 12, characterized in that, The capacitor shield is located between the capacitor sensor and the electrical connector; the capacitor shield includes a first groove, the opening of the first groove being opposite to the pressing surface; the pressure sensor is located within the first groove.

14. The button according to any one of claims 11-13, characterized in that, The capacitor shielding component includes a rigid-flex plate, which is integrally formed with the electrical connector.

15. The button according to any one of claims 1-14, characterized in that, The mechanical switch is one in number, and the mechanical switch is located in the middle of the cantilever. The pressure sensor includes a first pressure sensor and a second pressure sensor. The projection of the first pressure sensor on the pressing surface is located on one side of the mechanical switch, and the projection of the second pressure sensor on the pressing surface is located on the other side of the mechanical switch.

16. The button according to any one of claims 1-15, characterized in that, There are two mechanical switches, located at both ends of the cantilever, and the projection of the pressure sensor on the pressing surface is located between the two mechanical switches.

17. The button according to any one of claims 1-16, characterized in that, The electrical connector includes a flexible circuit board or a metal wire.

18. The button according to any one of claims 1-17, characterized in that, The pressure sensor includes at least one of the following: piezoresistive pressure sensor, metal strain gauge pressure sensor, MEMS pressure sensor, piezoelectric pressure sensor, or ultrasonic pressure sensor.

19. The button according to any one of claims 1-18, characterized in that, The keycaps are made of at least one of the following materials: plastic, ceramic, sapphire, rubber, epoxy resin, or plastic.

20. An electronic device, characterized in that, include: case; The button according to any one of claims 1-19, wherein the housing forms the base, and the button is disposed on the housing.

21. The electronic device according to claim 20, characterized in that, The housing includes a frame and a back cover; The electronic device further includes a screen, and the bezel is located between the screen and the back cover, and is connected to the back cover; The frame forms the base, and the button is disposed on the frame.

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