An electronic device

Abstract

This application relates to the field of terminal device technology, and more particularly to an electronic device. The electronic device includes: a button assembly, which includes: a guide post comprising a rigid portion and a flexible portion, the flexible portion being at least partially embedded in the rigid portion and covering at least one end face of the rigid portion along a first direction, wherein the first direction includes the axial direction of the rigid portion; and a keycap located on one side of the guide post along the first direction, the keycap being configured to move along the first direction and abut against the guide post under pressing pressure. The electronic device provided by the embodiments of this application improves the tactile feedback of the buttons while avoiding impact on the processing of the keycap, preventing the flexible portion from detaching, and improving the structural connection strength.

Description

Technical Field

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

[0002] To facilitate user operation of electronic devices, buttons can be installed on the outer surface of the electronic device to allow users to conveniently control functions such as volume and power on / off.

[0003] Currently, in order to improve the tactile feel when users press buttons, a flexible structure is usually set inside the button to buffer the pressing force, thereby optimizing the pressing feel of the button.

[0004] In the manufacturing of electronic devices, a dual-injection molding process is typically used to integrate soft and hard plastic components, allowing the soft plastic to cushion the external forces acting on the buttons. After the soft plastic structure is formed on the buttons, further processing is often required in a high-temperature environment. However, the high temperature can cause the soft plastic on the buttons to deform or detach, leading to connection failure and affecting the structural strength of the buttons. Summary of the Invention

[0005] To address the aforementioned issues, this application provides an electronic device that improves the tactile feedback of the buttons while avoiding impact on the keycap manufacturing process, preventing the flexible parts from detaching, and enhancing the structural connection strength.

[0006] To achieve the above objectives, embodiments of this application provide an electronic device including a button assembly. The button assembly includes: a guide post, comprising a rigid portion and a flexible portion, the flexible portion being at least partially embedded in the rigid portion and covering at least one end face of the rigid portion along a first direction, wherein the first direction includes the axial direction of the rigid portion; and a keycap located on one side of the guide post along the first direction, the keycap being configured to move along the first direction and abut against the guide post under pressure.

[0007] The electronic device provided in this application embodiment features a keycap and guide post that are separately configured in the key assembly structure, allowing for independent manufacturing of the keycap and guide post. Furthermore, with the keycap and guide post separate and the keycap not connected to the flexible portion, the choice of keycap material is more flexible, eliminating the need to consider the materials of the rigid and flexible portions, thus further enhancing the flexibility of keycap manufacturing. In addition, the flexible portion is at least partially embedded in the rigid portion, improving the connection strength between the two. Simultaneously, the flexible portion at least covers one end of the rigid portion along its own axis, buffering pressing pressure and external impacts, improving the user's pressing feel while protecting the keycap and flexible circuit board. Furthermore, when the guide post itself includes a flexible portion, the design of the flexible portion can avoid affecting the dimensional design of other structures, allowing for improvements using the existing design space of the guide post, thereby avoiding impact on the overall size and structural strength of the electronic device.

[0008] In one alternative implementation, the rigid portion has an opening; the opening has an opening on at least one end face of the rigid portion; a first portion of the flexible portion is embedded in the opening; a second portion of the flexible portion connects to the first portion at the opening, and the second portion at least covers one end face of the rigid portion along a first direction. Thus, by embedding the first portion in the opening inside the rigid portion, the flexible portion can be accommodated and positioned within the space occupied by the rigid portion, eliminating the need to reserve additional space for the flexible portion and facilitating miniaturization of button assemblies and electronic devices. Furthermore, compared to a solid rigid portion, the rigid portion with the opening and the embedded first portion is lighter overall, making it easier to achieve lightweight design of button assemblies and electronic devices.

[0009] In one alternative implementation, the opening is a through hole; the second part covers both end faces of the rigid part along the first direction. Thus, both end faces of the rigid part are covered by the second part, effectively enhancing the cushioning effect of the flexible part and improving the pressing feel. Simultaneously, the two second parts and the first part allow the flexible part to form an "I"-shaped structure, preventing it from detaching from the rigid part and maintaining its connection.

[0010] In one alternative implementation, the second portion covering both end faces has the same thickness. This eliminates the need to distinguish the guide pillar's orientation during assembly with the middle frame; the side of the guide pillar facing the keycap and flexible circuit board both have a second portion of the same thickness, thus simplifying assembly and improving efficiency.

[0011] In one alternative implementation, the opening is a through hole; one end face of the rigid part has an opening, and the other end face has a groove; the opening is located within the groove; a second part of the flexible part covers the end face of the rigid part with the opening; a third part of the flexible part connects to the first part and is located within the groove. In this way, the flexible part can form an "I"-shaped structure, thereby preventing the flexible part from detaching from the opening of the rigid part and maintaining the stability of the connection with the rigid part.

[0012] In one alternative implementation, the opening is a blind hole; the second part covers the end face of the rigid part with the opening. This reduces the impact of the opening on the structural strength of the rigid part.

[0013] In one alternative implementation, the electronic device further includes a mid-frame with mounting holes; the flexible part also includes a sealing ring; the sealing ring is disposed on the outer peripheral surface of the rigid part; the sealing ring is securely engaged with the mounting hole, and is configured to move relative to the mounting hole in a first direction under the influence of the rigid part. Thus, when the guide post is assembled with the mid-frame of the electronic device, a sealed connection with the mounting hole can be achieved through the sealing ring, sealing the gap between the outer peripheral surface of the rigid part and the mounting hole. This prevents external moisture from entering the interior of the electronic device through the mounting holes of the mid-frame, thereby achieving waterproof protection for the electronic device.

[0014] In one alternative implementation, an annular groove is provided on the outer peripheral surface of the rigid part; a sealing ring is embedded in the annular groove. Thus, when the rigid part moves relative to the mounting hole of the middle frame in a first direction, the sealing ring can move with the rigid part, thereby preventing the sealing ring from disengaging from the rigid part.

[0015] In one alternative implementation, the annular groove is located at the center of the rigid part along the first direction. This creates a symmetrical structure for the guide post formed by the rigid part, the flexible part, and the sealing ring. When assembling the guide post with the mounting holes of the middle frame, it is unnecessary to determine the installation direction of the guide post, simplifying the assembly process and improving assembly efficiency.

[0016] In one alternative implementation, the mid-frame also includes a mounting groove with mounting holes located on the bottom surface of the groove. The keycap is movably snapped into the mounting groove. The key assembly also includes connecting foam; one side of the connecting foam is connected to the keycap, and the other side is connected to the bottom surface of the groove. Thus, when the keycap is pressed, it can compress the connecting foam and move towards the guide post in a first direction. When the keycap loses pressure, the connecting foam can restore its deformation, pushing the keycap away from the guide post in the first direction, thereby returning the keycap to its unpressed position.

[0017] In one alternative implementation, the middle frame further includes a mounting slot, with a mounting hole communicating with the mounting slot. The mounting slot and the mounting hole are located on opposite sides of the mounting hole along a first direction. The key assembly also includes a flexible circuit board disposed in the mounting slot. An elastic contact is provided on the side of the flexible circuit board facing the guide post. The guide post contacts the elastic contact. Thus, when the keycap is pressed, it can move towards the guide post along the first direction, pushing the guide post to compress the elastic contact along the first direction, thereby causing the elastic contact to deform and conduct. When the keycap is depressed, the elastic contact returns to its original shape and pushes the guide post back to its initial position along the first direction.

[0018] In one alternative implementation, when the keycaps are made of metal, the connecting foam is conductive foam. This conductive foam provides electrostatic protection for the electronic components inside the frame and prevents the metal on the keycaps from causing radio frequency interference to the antennas of the electronic devices, thus protecting the radio frequency performance of the electronic devices.

[0019] In one alternative implementation, the flexible part is integrally formed with the rigid part. This improves the connection strength between the rigid and flexible parts and also increases manufacturing efficiency.

[0020] In one alternative implementation, a positioning groove is provided on the outer peripheral surface of the rigid part; the positioning groove is used for positioning and fixing by the processing equipment during processing. In this way, when the flexible part is integrally formed onto the rigid part, the processing equipment (such as a mold) can use the positioning groove to clamp and position the rigid part, thereby improving the processing accuracy of the flexible part.

[0021] In one alternative implementation, the keycaps are made of plastic, and the outer surface of the keycaps is manufactured using a physical vapor deposition (PVD) process. This improves the appearance of the keycaps, thereby enhancing the user experience. Attached Figure Description

[0022] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a structural diagram of a mobile phone;

[0024] Figure 2 This is a schematic diagram of the first structure of a mobile phone side button;

[0025] Figure 3 This is a schematic diagram of the second structure of the side button on a mobile phone;

[0026] Figure 4This is a schematic diagram of the third structure of the side button on a mobile phone;

[0027] Figure 5 This is a partial structural diagram of an electronic device with a button assembly provided in an embodiment of this application;

[0028] Figure 6 yes Figure 5 A schematic diagram of the cross-section along the AA direction;

[0029] Figure 7 yes Figure 6 Enlarged view of part B in the image;

[0030] Figure 8 This is a schematic diagram of the first type of button component structure provided in the embodiments of this application;

[0031] Figure 9 This is a schematic diagram of the second type of button component structure provided in the embodiments of this application;

[0032] Figure 10 This is a schematic diagram of the cross-sectional structure of the first type of guide post provided in the embodiments of this application;

[0033] Figure 11 This is a schematic diagram of the cross-sectional structure of the second type of guide post provided in the embodiments of this application;

[0034] Figure 12 This is a schematic diagram of the cross-sectional structure of the third type of guide post provided in the embodiments of this application;

[0035] Figure 13 This is a schematic diagram of the structure of a guide post provided in an embodiment of this application.

[0036] Illustration markings:

[0037] 1-Mobile phone, 11-Screen, 12-Housing, 121-First groove, 122-Second groove, 123-First through hole, 13-Back cover, 14-Side button, 140-Pressing surface, 141-Side button body, 142-Soft rubber conductive base, 143-Connecting post, 144-Side button contact;

[0038] 20-Button assembly, 21-Guide post, 211-Rigid part, 2111-Opening, 211a-Opening, 211b-Groove, a-First end face, b-Second end face, 2112-Annular groove, 2113-Positioning groove, 212-Flexible part, 2121-First part, 2122-Second part, 2123-Third part, 2124-Sealing ring, 22-Keycap, 221-Main body, 222-Snap-fit ​​part, 23-Flexible circuit board, 24-Elastic contact, 25-Connecting foam, 30-Middle frame, 31-Assembly hole, 32-Assembly groove, 321-Assembly groove body, 322-Snap-fit ​​groove, 33-Mounting groove. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are all within the protection scope of this application.

[0040] In the following description, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0041] Furthermore, in this application, directional terms such as "upper," "lower," "inner," and "outer" are defined relative to the indicated placement of the components in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the placement of the components in the accompanying drawings.

[0042] The electronic devices described in this application include, but are not limited to, mobile phones, laptops, tablets, personal digital assistants, or wearable devices. The following description uses a mobile phone as an example.

[0043] Figure 1 This is a structural diagram of a mobile phone.

[0044] like Figure 1 As shown, the mobile phone 1 may include a screen 11, a housing 12, and a back cover 13. The screen 11 and the back cover 13 are respectively fastened to both sides of the housing 12 and together with the housing 12 form a receiving cavity for accommodating electronic components inside the mobile phone 1.

[0045] For example, the cavity of mobile phone 1 may house electronic devices such as a camera module, a communication module, a circuit board, a battery, and a speaker assembly, which will not be listed here.

[0046] To facilitate the explanation of the positions of various components in mobile phone 1, this application embodiment exemplarily establishes a three-dimensional coordinate system based on mobile phone 1, wherein the x-axis direction is the width direction of the electronic device, the y-axis direction is the length direction of the electronic device, and the z-axis direction is the thickness direction of mobile phone 1.

[0047] To enable quick control of volume and power on / off functions on the phone 1, the phone 1 typically includes a side button 14. The side button 14 can be located on the side of the housing 12 for easy touch and operation by the user. A side button hole can be provided on the housing 12 of the phone 1 for mounting the side button 14.

[0048] Figure 2 This is a schematic diagram of the first type of side button structure for mobile phones.

[0049] like Figure 2 As shown, the side keyhole on the housing 12 may include a first groove 121, a second groove 122, and a first through hole 123. The first groove 121 and the second groove 122 are located on both sides of the first through hole 123, and the first through hole 123 connects the first groove 121 and the second groove 122. The first groove 121 is located on the side of the first through hole 123 away from the receiving cavity.

[0050] For example, the side button 14 of the mobile phone 1 may include a side button body 141, a soft rubber conductive base 142, a connecting post 143, and a side button contact 144 arranged sequentially along the x-axis. The side button body 141 has a pressing surface facing outwards from the mobile phone 1 for user pressing. The connecting post 143 is located between the side button body 141 and the side button contact 144 to transmit the pressing force received by the side button body 141 to the side button contact 144. Simultaneously, to achieve conductivity of the side button contact 144, the connecting post 143 is typically a conductive structure. The soft rubber conductive base 142 is disposed on the side button body 141, and the conductivity of the soft rubber conductive base 142 can prevent it from affecting the conductivity between the connecting post 143 and the side button contact 144.

[0051] For example, the side button body 141 is disposed in the first groove 121 and can move relative to the first groove 121 along the x-axis to realize the pressing operation. The connecting post 143 is disposed in the first through hole 123, and the side button contact 144 is disposed in the second groove 122. One end of the connecting post 143 abuts against the soft rubber conductive base 142, and the other end abuts against the side button contact 144.

[0052] During the user's pressing of the side button 14, when the user presses the pressing surface 140 of the side button body 141, the side button body 141 moves towards the side button contact 144 under the action of the pressing force. During the movement, the side button body 141 pushes the connecting post 143 towards the side button contact 144, causing the connecting post 143 to press the side button contact 144, thereby realizing the conduction of the side button contact 144. During the pressing process, the soft rubber conductive base 142 can absorb part of the pressing force, thereby improving the user's pressing feel. In addition, if the mobile phone 1 is dropped, the soft rubber conductive base 142 can also absorb external impacts to prevent damage to the side button 14 structure.

[0053] In one example, to reduce the overall weight of the phone 1, the side button body 141 can be made of plastic to replace the metal side button body 141, thus reducing its weight. Meanwhile, considering the different appearances of plastic and metal, to improve the appearance of the plastic side button body 141, a physical vapor deposition (PVD) process can be used to treat its surface.

[0054] For example, the material of the soft conductive base 142 can be thermoplastic polyurethane (TPU). The plastic side key body 141 and the soft conductive base 142 can be integrally molded using a dual-injection molding process to ensure the consistency of the connection between the side key body 141 and the soft conductive base 142. The surface treatment of the side key body 141 needs to be performed after the side key body 141 and the soft conductive base 142 are integrally molded. The processing temperature required for the PVD process is usually 80-100℃, and the heat distortion temperature of the TPU material of the soft conductive base 142 is 60-100℃. During the PVD process, the soft conductive base 142, which is integrally molded with the side key body 141, is prone to heat deformation and may even separate from the side key body 141, resulting in the failure of the connection between the soft conductive base 142 and the side key body 141.

[0055] Furthermore, the flexible conductive substrate 142 made of other materials is also more likely to undergo thermal deformation or separate from the side key body 141 during the PVD process. Therefore, when the side key body 141 and the flexible conductive substrate 142 are integrally molded, it is difficult to use the PVD process to process the appearance of the side key body 141 in order to ensure the connection strength. At the same time, if a metal side key body 141 is used directly, it is difficult to achieve the design requirement of weight reduction and it will also increase the production cost.

[0056] It can be seen that when the soft conductive base 142 is placed on the side key body 141, the processing and manufacturing of the side key body 141 will be restricted, and the material selection of the side key body 141 will also be restricted, thereby increasing the design and production difficulty of the side key 14.

[0057] Figure 3 This is a schematic diagram of the second type of side button structure for mobile phones.

[0058] like Figure 3As shown, in another example, the side button body 141 and the connecting post 143 of the side button 14 on the mobile phone 1 can both be made of metal, and the side button body 141 and the connecting post 143 can be integrally formed. The soft rubber conductive base 142 can be set on the side of the connecting post 143 away from the side button body 141. In this case, the soft rubber conductive base 142 can be connected to the connecting post 143 by adhesive.

[0059] exist Figure 3 In the side key 14 structure shown, an additional bonding process is required between the connecting post 143 and the soft conductive base 142. This bonding process affects production efficiency and increases production costs. Furthermore, since the connecting post 143 and the soft conductive base 142 are typically small in size, they are difficult to handle during the bonding process, which also affects production efficiency. More importantly, the bonding consistency between the connecting post 143 and the soft conductive base 142 is poor, the soft conductive base 142 is prone to detachment, and the side key 14 structure has poor strength.

[0060] It can be seen that when the soft conductive base 142 is bonded to the end of the connecting post 143, poor bonding consistency is likely to occur, which will also increase the processing steps, affect production efficiency and production cost, thereby increasing the design and production difficulty of the side key 14.

[0061] Figure 4 This is a schematic diagram of the third type of side button structure for mobile phones.

[0062] like Figure 4 As shown, in another example, the soft conductive base 142 can be transformed into a conductive pad and disposed on the surface of the side key contact 144. In this case, the design and manufacturing of the conductive pad needs to be combined with the structure of the side key contact 144, increasing the design difficulty and production cost of the conductive pad. Meanwhile, compared to... Figure 2 The arrangement of the side key contact 144 in the second groove 122, as shown, requires increasing the size of the second groove 122 along the x-axis, thus affecting the structural strength of the housing 12.

[0063] It can be seen that converting the soft conductive base 142 into a conductive pad and placing it on the side key contact 144 increases the design difficulty of combining the side key contact 144 and the conductive pad, thus increasing production costs. At the same time, it also affects the spatial design of the second groove 122, thereby affecting the structural strength of the housing 12.

[0064] To address the aforementioned issues, this application provides an electronic device including a button assembly. This button assembly improves the tactile feedback of the buttons while enhancing the flexibility of keycap manufacturing, thus avoiding difficulties in performing PVD processes on the keycaps. Furthermore, the button assembly provided in this application also prevents deformation and detachment of the flexible portion of the guide posts, improves the connection strength of the flexible portion, and avoids impacting the dimensions and structural strength of the electronic device's frame.

[0065] Figure 5 This is a partial structural diagram of an electronic device with a button assembly provided in an embodiment of this application.

[0066] Figure 6 yes Figure 5 A schematic diagram of the cross-section along the AA direction.

[0067] Figure 7 yes Figure 6 Enlarged view of part B in the image.

[0068] Please see Figures 5 to 7 As shown, the electronic device provided in this application embodiment may include a button assembly 20 and a middle frame 30, and the button assembly 20 may be disposed on the middle frame 30.

[0069] For example, the electronic device may also include a display screen and a battery cover. The display screen and battery cover can be fastened to both sides of the middle frame 30 and form a receiving cavity with the middle frame 30 to accommodate other electronic components inside the electronic device, such as circuit boards, camera modules, speaker modules, etc., which will not be described in detail here.

[0070] It is understood that the structure of the electronic device provided in the embodiments of this application can be referred to Figure 1 The structure of the mobile phone in this embodiment will not be described in detail here. Meanwhile, the electronic devices provided in this application include, but are not limited to, mobile phones, laptops, tablets, personal digital assistants, or wearable devices. Correspondingly, the mid-frame 30 can also be other housing structures of the electronic device. In this embodiment, the placement of the button assembly 20 on the electronic device is not limited. In this embodiment, the button assembly 20 is placed in the mid-frame 30 as an example for explanation.

[0071] It should be noted that the button assembly 20 on the electronic device can be located on the side of the middle frame 30 or on other surfaces of the middle frame 30. In this embodiment, the location of the button assembly 20 on the middle frame 30 is not limited.

[0072] For example, the key assembly 20 may include guide posts 21, keycaps 22, and a flexible printed circuit board (FPC) 23. The middle frame 30 may include mounting holes 31, mounting slots 32, and mounting slots 33. The mounting slots 32 and 33 are located on both sides of the mounting hole 31, and the mounting hole 31 is located on the bottom surface of the mounting slot 32. The mounting hole 31 connects the mounting slot 32 and the mounting slot 33. The guide posts 21 may be disposed in the mounting holes 31 and may move relative to the mounting holes 31 along a first direction, wherein the first direction is the axial direction of the guide posts 21. The keycaps 22 may be movably snapped into the mounting holes 31, and the flexible printed circuit board 23 may be mounted in the mounting slots 33.

[0073] It should be noted that if the button assembly 20 is located on one side of the electronic device along the width (x-axis), then the first direction can be the width (x-axis) direction of the electronic device. If the button assembly 20 is located on one side of the electronic device along the length (y-axis), then the first direction can be the width (y-axis) direction of the electronic device. If the button assembly 20 is located on one side of the electronic device along the thickness (z-axis), then the first direction can be the thickness (z-axis) direction of the electronic device.

[0074] Figure 8 This is a schematic diagram of the first type of button component structure provided in the embodiments of this application.

[0075] Figure 9 This is a schematic diagram of the second type of button component structure provided in the embodiments of this application.

[0076] Combination Figures 7 to 9 As shown, exemplarily, the guide post 21 includes a rigid portion 211 and a flexible portion 212. The rigid portion 211 can be used to form the columnar body of the guide post 21, and at least a portion of the flexible portion 212 can be embedded in the rigid portion 211, thereby improving the connection strength with the rigid portion 211. Simultaneously, the flexible portion 212 covers the rigid portion 211 along a first direction (e.g., Figure 7 At least one end face (in the x-axis direction). The keycap 22 is located on one side of the guide post 21 along the first direction. Under the action of pressing pressure, the keycap 22 can move along the first direction (e.g., in the x-axis direction). Figure 7 The X1 direction) moves and abuts against the guide post 21, and pushes the guide post 21 along the first direction (such as... Figure 7 The keycap 212 moves in the X1 direction to achieve the key function. At this time, the flexible part 212 can absorb part of the pressing force from the keycap 22 in the first direction, thereby buffering the pressing force or external impact, protecting the relevant structure of the key assembly 20, and improving the user's pressing feel to improve the user experience.

[0077] In the key assembly 20 provided in this application embodiment, the keycap 22 and guide post 21 are separately configured, and the keycap 22 and guide post 21 can be manufactured separately. Furthermore, with the keycap 22 and guide post 21 separately configured and the keycap 22 not connected to the flexible part 212, the choice of material for the keycap 22 is more flexible, without needing to consider the materials of the rigid part 211 and the flexible part 212, thereby further improving the manufacturing flexibility of the keycap 22. Since the guide post 21 is usually located inside the electronic device, the appearance requirements are relatively low. When processing the key assembly 20, only the keycap 22 needs to undergo appearance processing. In this case, the keycap 22, which is separate from the guide post 21, can freely choose the surface processing technology (such as PVD process) to avoid deformation or connection failure of the flexible part 212 due to the processing of the keycap 22, thereby further improving the manufacturing flexibility of the keycap 22 and increasing the production efficiency of the keycap 22. Furthermore, at least a portion of the flexible part 212 is embedded in the rigid part 211, which improves the connection strength between the rigid part 211 and the flexible part 212 through the embedded connection method. Simultaneously, the flexible part 212 at least covers one end of the rigid part 211 along its own axis, thus buffering the pressing pressure and external impact forces, improving the user's pressing feel, and protecting the keycap 22 and the flexible circuit board 23. Furthermore, when the guide post 21 itself includes the flexible part 212, the design of the flexible part 212 can avoid affecting the dimensional design of other structures, allowing for improvements using the original design space of the guide post 21, thereby avoiding impact on the overall size and structural strength of the electronic device.

[0078] In some embodiments, the flexible circuit board 23 and the keycap 22 are located on opposite sides of the guide post 21. The flexible circuit board 23 is provided with elastic contacts 24, which are positioned towards the guide post 21.

[0079] like Figure 7 As shown, when the keycap 22 is pressed, the keycap 22 can move along the first direction (e.g., Figure 7 The keycap 22 moves towards the guide post 21 in the X1 direction, pushing the guide post 21 to compress the elastic contact 24 along the first direction, thereby causing the elastic contact 24 to deform and conduct. When the keycap 22 loses pressure, the elastic contact 24 returns to its original shape and pushes the guide post 21 along the first direction (e.g., in the X1 direction). Figure 7 The guide post 21 moves to the initial position in the X2 direction. The initial position is the position where the guide post 21 contacts the elastic contact 24 and the elastic contact 24 is not compressed.

[0080] For example, the resilient contact 24 can be a metal dome switch, also known as a dome, which is a thin sheet of polyethylene terephthalate (PET) containing a metal spring (dome). The dome switch has good conductivity and deformation capability, and can be used as a switch on the flexible circuit board 23. After pressure is applied to the dome switch by the guide post 21, the dome switch deforms and short-circuits with the flexible circuit board 23 below, resulting in signal connection. Simultaneously, the dome switch also has a stable rebound force (automatically returning to its original position after being pressed), thereby pushing the guide post 21 to its initial position.

[0081] like Figure 8 As shown, in some examples, when the button assembly 20 has only one button function (such as power on or power off), the button assembly 20 may include a guide post 21 and a resilient contact 24 on the flexible circuit board 23.

[0082] like Figure 9 As shown, in other examples, when the button assembly 20 can have two button functions (such as volume + and volume -), the button assembly 20 can include two guide posts 21, and the flexible circuit board 23 can have two elastic contacts 24.

[0083] In some other examples, the button assembly 20 may include multiple keycaps 22 and multiple guide posts 21, and the flexible circuit board 23 may be provided with multiple elastic contacts 24, wherein the number of elastic contacts 24 is the same as the number of guide posts 21. In this embodiment, the number of keycaps 22, guide posts 21 and elastic contacts 24 is not limited.

[0084] It is understandable that when multiple button structures need to be set on an electronic device, the multiple button structures can be set relatively independently, or the various button structures can be set together, such as sharing a flexible circuit board 23. This can save the internal circuit design space of the electronic device and simplify the structural design of the electronic device.

[0085] Please refer to it again. Figure 7In some embodiments, after the guide post 21 is installed in the mounting hole 31, the keycap 22 is installed in the mounting slot 32, and the flexible circuit board 23 is installed in the mounting slot 33, the side of the guide post 21 facing the flexible circuit board 23 contacts the elastic contact 24, and the surface of the guide post 21 facing the keycap 22 can have a gap H. This gap H reduces the requirements on the assembly dimension chain of the key assembly 20, thereby reducing manufacturing tolerances of each part and facilitating manufacturing and assembly. Simultaneously, the presence of the gap H indicates that the elastic contact 24 of the flexible circuit board 23 is not compressed, thus preventing the guide post 21 from compressing the elastic contact 24 during initial assembly, which could affect the tactile feedback and conduction function of subsequent keys.

[0086] For example, the value of the gap H can be 0 ≤ H ≤ 0.05 mm.

[0087] Optionally, the gap H can be 0.01mm, 0.02mm, 0.025mm, 0.03mm, 0.035mm, 0.04mm, 0.045mm, 0.05mm, etc. This avoids an excessively large gap H between the guide post 21 and the keycap 22, which would increase the pressing stroke and affect the miniaturization design of electronic devices. Simultaneously, it also avoids an excessively small gap H between the guide post 21 and the keycap 22, which would result in excessively high requirements for machining tolerances.

[0088] like Figure 6 As shown, in some embodiments, the keycap 22 may include a main body 221 and a snap-fit ​​portion 222, wherein the snap-fit ​​portion 222 is located along the length direction of the main body 221 (e.g., ...). Figure 6 The assembly slot 32 extends outward from both ends (in the y-axis direction). The assembly slot 32 may include an assembly slot body 321 and a snap-fit ​​slot 322, the snap-fit ​​slot 322 being located along the length direction of the assembly slot body 321 (e.g., along the y-axis direction). Figure 6 At the end of the y-axis direction, the snap-fit ​​groove 322 corresponds to the snap-fit ​​part 222, so that the snap-fit ​​part 222 can snap into the snap-fit ​​groove 322 and can move in the first direction within the snap-fit ​​groove 322.

[0089] For example, one snap-fit ​​portion 222 of the keycap 22 can snap into the snap-fit ​​groove 322, and the other snap-fit ​​portion 222 can snap into the mounting groove 32 through a pin structure, thereby facilitating the mounting of the keycap 22 into the mounting groove 32 and preventing the keycap 22 from slipping out of the mounting groove 32.

[0090] Combination Figure 6 , Figure 8 and Figure 9 As shown, when an electronic device includes multiple sets of button assemblies 20, two adjacent keycaps 22 can share a single pin structure to simplify the structural design of the electronic device.

[0091] Combination Figure 7 and Figure 9 As shown, in some embodiments, to facilitate the reset of the keycap 22, the key assembly 20 may further include a connecting foam 25, one side of which is connected to the keycap 22, and the other side of which is connected to the bottom surface of the mounting groove 32. Thus, when the keycap 22 is pressed, it can compress the connecting foam 25 and move along a first direction (e.g., ...). Figure 7 The keycap 22 moves towards the guide post 21 in the X1 direction. When the keycap 22 loses pressure, the connecting foam 25 can restore its deformation to push the keycap 22 along the first direction (e.g., in the X1 direction). Figure 7 The keycap 22 moves away from the guide post 21 in the X2 direction, thereby returning the keycap 22 to the unpressed position.

[0092] Furthermore, the connecting foam 25 also supports the keycap 22, preventing it from wobbling within the mounting slot 32 and affecting the user experience. The connecting foam 25 also provides some cushioning to the pressing force, further improving the tactile feedback.

[0093] In some embodiments, if the keycap 22 is made of metal, such as if the keycap 22 itself is made of metal or if the surface of the keycap 22 is deposited with metal using PVD or other electroplating processes, then the connecting foam 25 can be conductive foam. Since the middle frame is typically made of metal, using conductive foam allows for conductivity between the keycap and the middle frame, enabling the keycap 22 to be grounded. This provides electrostatic protection for the electronic components inside the middle frame and prevents the metal material on the keycap 22 from causing radio frequency interference to the antennas on the electronic device, thus protecting the radio frequency performance of the electronic device.

[0094] In some embodiments, if the keycap 22 is made of plastic, since the keycap 22 and the guide post 21 are separate components, the appearance of the keycap 22 can be improved by using PVD process to improve the appearance of the keycap 22, thereby improving the user experience.

[0095] Figure 10 This is a schematic diagram of the cross-sectional structure of the first type of guide post provided in the embodiments of this application.

[0096] Figure 11 This is a schematic diagram of the cross-sectional structure of the second type of guide post provided in the embodiments of this application.

[0097] Figure 12 This is a schematic diagram of the cross-sectional structure of the third type of guide post provided in the embodiments of this application.

[0098] in, Figure 10 , Figure 11 as well as Figure 12(a) shows cross-sectional schematic diagrams of the three types of rigid parts. Figure 10 , Figure 11 as well as Figure 12 Figure (b) shows cross-sectional schematic diagrams of the three types of flexible parts. Figure 10 , Figure 11 as well as Figure 12 (c) in the figure are cross-sectional schematic diagrams of the three types of flexible and rigid parts in the connected state.

[0099] Combination Figures 10 to 12 As shown, in some embodiments, the rigid portion 211 has an opening 2111 extending along a first direction. Along the first direction, the opening 2111 has an opening 211a at at least one end face of the rigid portion 211.

[0100] For example, along the first direction, the rigid part 211 includes a first end face a and a second end face b.

[0101] Optionally, such as Figure 10 As shown, along the first direction (such as...) Figure 10 In the x-axis direction), the opening 2111 on the rigid part 211 can have an opening 211a on the first end face a. In this case, the opening 2111 is a blind hole.

[0102] Or, such as Figure 11 and Figure 12 As shown, the opening 2111 on the rigid part 211 can have an opening 211a on both the first end face a and the second end face b. In this case, the opening 2111 is a through hole and can penetrate through both end faces of the rigid part 211.

[0103] Combination Figures 10 to 12 As shown, in some embodiments, the flexible portion 212 includes a first portion 2121 and a second portion 2122. The first portion 2121 may be embedded in an opening 2111 on the rigid portion 211, and the second portion 2122 is connected to the first portion 2121 through the opening 211a of the opening 2111.

[0104] In this way, by embedding the first part 2121 into the opening 2111 inside the rigid part 211, the flexible part 212 can be accommodated and set within the space where the rigid part 211 is located. This eliminates the need to reserve additional space for the flexible part 212, facilitating the miniaturization of the button assembly 20 and the electronic device. Furthermore, compared to a solid rigid part 211, the rigid part 211 with the opening 2111 and the embedded first part 2121 is lighter overall, making it easier to achieve weight reduction in the button assembly 20 and the electronic device.

[0105] For example, the second part 2122 covers one end face of the rigid part 211 along the first direction.

[0106] like Figure 10 As shown, optionally, when the opening 2111 is a blind hole, the opening 2111 has an opening 211a on one end face of the rigid part 211, and the second part 2122 can only cover the one end face of the rigid part 211 with the opening 211a. An opening 2111 with only one opening 211a can reduce the impact of the opening 2111 on the structural strength of the rigid part 211. In this case, the second part 2122 can be opposite to the keycap 22, or the second part 2122 can also be opposite to the elastic contact 24. In other words, the flexible part 212 can abut against the keycap 22 or against the flexible circuit board 23; this is not limited in this embodiment.

[0107] like Figure 11 As shown, or when the opening 2111 is a through hole, the opening 2111 has openings 211a on both end faces of the rigid part 211. The second part 2122 can be connected to the first part 2121 through one of the openings 211a and cover the end face of the rigid part 211 where the opening 211a is located. The flexible part 212 may also include a third part 2123. A groove 211b may also be provided at the opening 211a on the other end face of the rigid part 211. The third part 2123 is connected to the first part 2121 through the opening 211a and is embedded in the groove 211b. In this case, the third part 2123 does not completely cover the other end face of the rigid part 211, but it can make the flexible part 212 form an "I"-shaped structure, thereby preventing the flexible part 212 from detaching from the opening 2111 of the rigid part 211, so as to maintain the connection stability with the rigid part 211.

[0108] like Figure 12 As shown, alternatively, when the opening 2111 is a through hole, the opening 2111 has openings 211a on both end faces of the rigid part 211. The second part 2122 can also be two, each second part 2122 connected to the first part 2121 through an opening 211a, and covering the end face of the rigid part 211 where the opening 211a is located. In this way, both end faces of the rigid part 211 are covered by the second part 2122, effectively improving the cushioning effect of the flexible part 212 and enhancing the pressing feel. Simultaneously, the two second parts 2122 and the first part 2121 allow the flexible part 212 to form an "I"-shaped structure, preventing the flexible part 212 from detaching from the rigid part 211 and maintaining its connection to the rigid part 211.

[0109] In some embodiments, such as Figure 12As shown, when there are two second parts 2122 that can cover both ends of the rigid part 211 respectively, the thickness of the two second parts 2122 can be the same along the first direction. In this way, the guide post 21 does not need to distinguish the direction of the guide post 21 during the assembly process with the middle frame 30. That is, the guide post 21 has a second part 2122 of the same thickness on the side facing the keycap 22 and the flexible circuit board 23, which simplifies the assembly work and improves the assembly efficiency.

[0110] The following is Figure 12 The structure of the guide post 21 shown is used as an example for explanation.

[0111] like Figure 12 As shown, by way of example, along the first direction, the length L1 of the rigid part 211 is ≥ 1.4 mm, that is, the minimum length of the rigid part 211 can be 1.4 mm.

[0112] Optionally, the length of the rigid portion 211 can also be 1.5mm, 1.6mm, 1.7mm, or 1.8mm. The greater the length of the rigid portion 211, the greater its structural strength, but the larger the dimension of the button assembly 20 in the first direction. In this embodiment, when the length of the rigid portion 211 is 1.4mm, the structural strength of the rigid portion 211 can be guaranteed, and the dimension of the button assembly 20 in the first direction can be reduced, which helps to achieve miniaturization of the button assembly 20 and the electronic device. At the same time, when the length L1 of the rigid portion 211 is ≥ 1.4mm, the processing and manufacturing requirements of the rigid portion 211 are lower, making production easier.

[0113] For example, along the first direction, the thickness L2 of the second part 2122 is ≥0.25mm, that is, the minimum thickness of the second part 2122 can be 0.25mm.

[0114] Optionally, the thickness of the second part 2122 can also be 0.26mm, 0.27mm, 0.28mm, 0.29mm, and 0.30mm, etc. The greater the thickness of the second part 2122, the better the user's pressing feel, but the larger the size of the button assembly 20 in the first direction will be. In this embodiment, when the thickness of the second part 2122 is 0.25mm, the thickness of the second part 2122 can be minimized while ensuring the pressing feel, thereby reducing the space occupied by the second part 2122 in the first direction and contributing to the miniaturization design of the button assembly 20 and the electronic device. At the same time, when the thickness L2 of the second part 2122 is ≥ 0.25mm, the processing and manufacturing requirements for the second part 2122 are lower, facilitating production.

[0115] It can be seen that the overall length L of the rigid part 211 and the two second parts 2122 in the first direction is ≥1.9mm. Optionally, the overall length L can be 1.9mm, 2.0mm, 2.1mm, 2.2mm, and 2.3mm, etc. In other words, the minimum dimension of the combined structure of the rigid part 211 and the flexible part 212 in the first direction can be 1.9mm, which helps to reduce the size of the button assembly 20 in the first direction and also facilitates the reduction of the size of the electronic device in the first direction.

[0116] For example, the diameter D1 of the rigid part 211 is ≥ 1.2 mm.

[0117] Optionally, the diameter D1 of the rigid part 211 can be 1.2mm, 1.3mm, 1.4mm, 1.5mm, or 1.6mm. In other words, while ensuring structural strength, the minimum diameter D1 of the rigid part 211 can be 1.2mm, which facilitates the miniaturization design of the button assembly 20. At the same time, when the diameter D1 of the rigid part 211 is ≥ 1.2mm, the processing and manufacturing requirements of the rigid part 211 are lower, making production easier.

[0118] For example, the aperture D2 of opening 2111 is ≥0.3mm.

[0119] Optionally, the aperture D2 of the opening 2111 can be 0.3mm, 0.35mm, 0.4mm, 0.45mm, 0.5mm, 0.55mm, and 0.6mm, etc.

[0120] Furthermore, the range of the aperture D2 of the opening 2111 can be set in conjunction with the diameter D1 of the rigid part 211. In this case, if the aperture D2 of the opening 2111 is ≤ 0.6mm, it can avoid the wall thickness being too thin after setting the opening 2111, making it easy to deform; if the aperture D2 of the opening 2111 is ≥ 0.3mm, it can avoid the aperture being too small, resulting in a small diameter of the first part 2121, making it easy to break.

[0121] It should be noted that the structural dimensions of the rigid part 211 and the flexible part 212 provided in this application embodiment are only an example, and this application embodiment does not limit the structural dimensions of the rigid part 211 and the flexible part 212.

[0122] In some embodiments, the rigid part 211 can be made of metal, thereby achieving electrical conductivity while ensuring structural strength.

[0123] In some embodiments, the flexible part 212 can be made of TPU material, which is elastic and has a certain degree of conductivity, thus avoiding any impact on the button function.

[0124] In some embodiments, in order to facilitate the installation of the guide post 21 into the mounting hole 31 of the middle frame 30, the diameter of the rigid part 211 may be smaller than the hole diameter of the mounting hole 31, and the outer peripheral surface of the rigid part 211 may be spaced 0.05mm from the hole wall of the mounting hole 31 for easy installation.

[0125] In some embodiments, the opening 2111 may also be provided with a guide slope at the opening 211a to facilitate the formation of a first portion 2121 within the opening 2111.

[0126] Please refer to it again. Figure 7 and Figure 12 The flexible part 212 also includes a sealing ring 2124, which is disposed on the outer peripheral surface of the rigid part 211. Thus, when the guide post 21 is assembled with the middle frame 30 of the electronic device, the sealing ring 2124 can achieve a sealed connection with the mounting hole 31, sealing the gap between the outer peripheral surface of the rigid part 211 and the mounting hole 31. This prevents external moisture from entering the interior of the electronic device through the mounting hole 31 of the middle frame 30, thereby achieving waterproof protection for the electronic device.

[0127] Furthermore, when the sealing ring 2124 is sealed and connected to the mounting hole 31, the sealing ring 2124 can move relative to the mounting hole 31 in the first direction under the drive of the rigid part 211, so that the guide post 21 can contact the flexible circuit board 23 to realize the button function.

[0128] For example, in order to facilitate the sealing and movable snap-fit ​​between the sealing ring 2124 and the mounting hole 31, the sealing ring 2124 can be interference-fitted with the mounting hole 31, and the value range of the interference amount E between the sealing ring 2124 and the mounting hole 31 can be: 0.05mm≤E≤0.13mm.

[0129] Optionally, the interference fit E between the sealing ring 2124 and the mounting hole 31 can be 0.05mm, 0.06mm, 0.07mm, 0.075mm, 0.08mm, 0.085mm, 0.09mm, 0.10mm, 0.105mm, 0.11mm, 0.12mm, 0.13mm, etc. Thus, when the interference fit E between the sealing ring 2124 and the mounting hole 31 is ≥0.05mm, the sealing ring 2124 can enable the electronic device to achieve IPX6 or even IPX8 level waterproofing at the button assembly 20, thereby preventing external moisture from entering the interior of the electronic device and affecting other electronic components inside. When the interference fit E between the sealing ring 2124 and the mounting hole 31 is ≤0.13mm, it avoids the sealing ring 2124 being too large and difficult to assemble into the mounting hole 31, also avoids affecting the relative movement of the guide post 21 and the mounting hole 31, and also saves materials.

[0130] In some embodiments, an annular groove 2112 may be provided on the outer peripheral surface of the rigid part 211, and the sealing ring 2124 is embedded in the annular groove 2112. In this way, when the rigid part 211 moves relative to the mounting hole 31 of the middle frame 30 in the first direction, the sealing ring 2124 can move with the rigid part 211, thereby preventing the sealing ring 2124 from disengaging from the rigid part 211.

[0131] Optionally, the annular groove 2112 can be located at the middle of the rigid part 211 along the first direction. In this way, the guide post 21 formed by the rigid part 211, the flexible part 212, and the sealing ring 2124 has a symmetrical structure. When assembling the guide post 21 with the assembly hole 31 of the middle frame 30, it is not necessary to determine the installation direction of the guide post 21, which simplifies the assembly work and improves the assembly efficiency.

[0132] In some embodiments, the flexible part 212 can be formed on the rigid part 211 by integral molding technology, thereby improving the connection strength between the rigid part 211 and the flexible part 212 and also improving manufacturing efficiency.

[0133] Figure 13 This is a schematic diagram of the structure of a guide post provided in an embodiment of this application.

[0134] Combination Figure 12 and Figure 13 As shown, in some embodiments, the outer peripheral surface of the rigid part 211 is also provided with a positioning groove 2113. The positioning groove 2113 can be used to position and fix the processing equipment during the processing.

[0135] For example, when processing the rigid part 211, a positioning groove 2113 can be formed on the outer peripheral surface of the columnar rigid part 211. In this way, when the flexible part 212 is integrally formed on the rigid part 211, the processing equipment (such as a mold) can use the positioning groove 2113 to clamp and position the rigid part 211, thereby improving the processing accuracy of the flexible part 212.

[0136] It should be noted that the machining sequence of the opening 2111 and the positioning groove 2113 on the rigid part 211 can be determined according to the actual situation, and is not limited in this embodiment.

[0137] In some embodiments, one, two, three or more positioning grooves 2113 may be provided on the outer peripheral surface of the rigid part 211. In this embodiment, the number of positioning grooves 2113 is not limited.

[0138] In some embodiments, the positioning groove 2113 can be disposed in the middle of the rigid part 211 along the first direction. In this case, the annular groove 2112 can pass through the positioning groove 2113 and be located in the middle of the positioning groove 2113, thereby enabling the guide post 21 to form a symmetrical structure for easy installation.

[0139] For example, along the first direction, when the annular groove 2112 is located in the middle of the rigid portion 211 and the positioning groove 2113 is also located in the middle of the rigid portion 211, the length l of the positioning groove 2113 extending beyond the annular groove 2112 along the first direction is ≥0.3mm.

[0140] Optionally, l can be 0.3mm, 0.35mm, 0.4mm, 0.45mm, 0.5mm, 0.55mm, or 0.6mm. This avoids the positioning groove 2113 being too small, which would affect the clamping and positioning of the rigid part 211 by the processing equipment.

[0141] For example, the positioning groove 2113 can be a square groove, and the width w of the positioning groove 2113 along the first direction is ≥0.25mm.

[0142] Optionally, w can be 0.25mm, 0.3mm, 0.35mm, 0.4mm, 0.45mm, 0.5mm, 0.55mm, and 0.6mm, etc. This avoids the positioning groove 2113 being too small, which would affect the clamping and positioning of the rigid part 211 by the processing equipment.

[0143] The following describes the manufacturing process of the guide post 21 provided in the embodiments of this application.

[0144] like Figure 12 As shown, when manufacturing the guide post 21 provided in this embodiment, the rigid part 211 of the guide post 21 can be fabricated using a metal structure first. After forming the rigid part 211, the rigid part 211 can be placed in a mold, and a flexible part 212 can be formed on the rigid part 211 using an integral molding process. This allows each part of the flexible part 212 to be formed in one step, saving processes and improving the connection consistency between the rigid part 211 and the flexible part 212, thus preventing the flexible part 212 from separating from the rigid part 211.

[0145] It should be noted that in this embodiment, the keycap 22 and the guide post 21 are separate structures. Therefore, when the guide post 21 is manufactured, the keycap 22 can be manufactured simultaneously, thereby improving production efficiency. Furthermore, the manufacturing processes of the guide post 21 and the keycap 22 have little mutual influence, which can improve the process flexibility during the manufacturing process.

[0146] It should be noted that, upon considering the specification and practicing the application disclosed herein, those skilled in the art will readily conceive of other embodiments of this application. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein.

[0147] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The true scope is indicated by this application.

Claims

1. An electronic device, characterized in that, Includes a button assembly (20), the button assembly (20) comprising: The guide post (21) includes a rigid part (211) and a flexible part (212). The rigid part (211) is provided with an opening (2111), which is a through hole. The flexible part (212) includes a first part (2121) embedded in the opening (2111). The flexible part (212) has an I-shaped structure to embed and / or cover the end face of the rigid part (211) along a first direction, wherein the first direction includes the axial direction of the rigid part (211). The keycap (22) is separately disposed from the guide post (21) and is located on one side of the guide post (21) along the first direction. The keycap (22) is configured such that, when no pressure is applied, the surface of the guide post (21) facing the keycap (22) has a gap (H) with the keycap (22). The keycap (22) is also configured to move in the first direction to abut against the guide post (21) and push the guide post (21) to move when pressed.

2. The electronic device according to claim 1, characterized in that, The opening (2111) has an opening (211a) on at least one end face of the rigid part (211). The second part (2122) of the flexible part (212) is connected to the first part (2121) at the opening (211a). There are two second parts (2122), and the two second parts (2122) and the first part (2121) form the I-shaped structure. The two second parts (2122) cover the two end faces of the rigid part (211) along the first direction.

3. The electronic device according to claim 2, characterized in that, The second portion (2122) covering both end faces has the same thickness.

4. The electronic device according to claim 2, characterized in that, One end face of the rigid part (211) has the opening (211a), and the other end face is provided with a groove (211b). The opening (2111) is located within the groove (211b); The second portion (2122) of the flexible portion (212) covers the end face of the rigid portion (211) having the opening (211a); The third part (2123) of the flexible part (212) is connected to the first part (2121) and is disposed in the groove (211b); The first part (2121), the second part (2122), and the third part (2123) form the I-shaped structure.

5. The electronic device according to any one of claims 1-4, characterized in that, The electronic device also includes a mid-frame (30) having mounting holes (31). The flexible part (212) also includes a sealing ring (2124). The sealing ring (2124) is disposed on the outer peripheral surface of the rigid part (211); The sealing ring (2124) is sealed and snapped into the mounting hole (31), and the sealing ring (2124) is configured to move relative to the mounting hole (31) in the first direction under the action of the rigid part (211).

6. The electronic device according to claim 5, characterized in that, The outer peripheral surface of the rigid part (211) is provided with an annular groove (2112). The sealing ring (2124) is embedded in the annular groove (2112).

7. The electronic device according to claim 6, characterized in that, The annular groove (2112) is located at the middle of the rigid part (211) along the first direction.

8. The electronic device according to claim 5, characterized in that, The middle frame (30) is also provided with an assembly groove (32), and the assembly hole (31) is located on the bottom surface of the assembly groove (32); The keycap (22) can be movably snapped into the assembly slot (32); The button assembly (20) also includes connecting foam (25); One side of the connecting foam (25) is connected to the keycap (22), and the other side is connected to the bottom surface of the groove.

9. The electronic device according to claim 8, characterized in that, The middle frame (30) is also provided with a mounting groove (33), the mounting hole (31) is connected to the mounting groove (33), and the mounting groove (32) and the mounting groove (33) are respectively located on both sides of the mounting hole (31) along the first direction; The button assembly (20) also includes a flexible circuit board (23), which is disposed in the mounting groove (33); The flexible circuit board (23) has an elastic contact (24) on the side facing the guide post (21). The guide post (21) is in contact with the elastic contact (24).

10. The electronic device according to claim 8, characterized in that, When the keycap (22) is made of metal, the connecting foam (25) is conductive foam.

11. The electronic device according to any one of claims 1-4, characterized in that, The flexible part (212) is integrally formed on the rigid part (211).

12. The electronic device according to any one of claims 1-4, characterized in that, The outer peripheral surface of the rigid part (211) is provided with a positioning groove (2113). The positioning groove (2113) is used to position and fix the processing equipment during the processing.

13. The electronic device according to any one of claims 1-4, characterized in that, The keycap (22) is made of plastic material, and the outer surface of the keycap (22) is made by physical vapor deposition (PVD) process.

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