Electronic device

Abstract

The application provides an electronic device, which comprises a frame, a first structural member, a second structural member, a circuit board assembly and a key assembly. The frame comprises a middle plate and a frame surrounding the middle plate. The frame is provided with a first mounting groove and a key groove. The middle plate is provided with a through hole penetrating through a first surface and a second surface. The second structural member forms a second accommodating space with the frame. The circuit board assembly is located in the second accommodating space. The key circuit board comprises a first main body part and a first flexible part. The through hole and at least part of the first accommodating space are communicated and form a first communication channel. The slot opening of the first mounting groove faces the first structural member. The slot opening of the first mounting groove is communicated with the second accommodating space through the first communication channel. The first flexible part is electrically connected with the circuit board assembly through the first communication channel. The first flexible part penetrates through the through hole. The first communication channel is provided with a first sealing structure. The electronic device provided by the application can reduce the sealing cost of the electronic device to a certain extent.

Description

Technical Field

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

[0002] Electronic devices typically house circuit board assemblies, batteries, and other components within their enclosures. Water ingress can impair the functionality of these devices. Therefore, a high degree of airtightness is required for these enclosures. However, in related technologies, achieving a high level of sealing is influenced by various factors, resulting in high sealing costs.

[0003] Application content

[0004] This application provides an electronic device that improves upon the problem of high sealing costs for the cavities of existing electronic devices.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] In a first aspect, an electronic device is provided. The electronic device includes a frame, a first structural member, a second structural member, a circuit board assembly, and a button assembly. The frame has a first side and a second side facing away from each other. The frame includes a middle plate and a frame surrounding the middle plate. The frame has a first mounting groove. The middle plate has a through hole penetrating its first and second sides. The first structural member is at least partially opposite to the first side of the frame, forming a first receiving space between the first structural member and the frame. The second structural member is at least partially opposite to the second side of the frame, forming a second receiving space with the frame. The circuit board assembly is located within the second receiving space. The button assembly includes a keycap and a button circuit board. At least a portion of the keycap is located within a button groove. The button circuit board includes a first main body and a first flexible portion. The first main body is located within the first mounting groove and is electrically connected to the keycap. The first flexible portion is electrically connected to the first main body and is bendable. The first flexible portion may be completely outside the first mounting groove, or partially inside the first mounting groove and partially outside the first mounting groove. The through hole and at least a portion of the first receiving space communicate to form a first communicating channel. The opening of the first mounting slot faces the first structural member. The opening of the first mounting slot communicates with the second receiving space through the aforementioned first connecting channel. The first flexible part is electrically connected to the circuit board assembly through the first connecting channel. The first flexible part passes through a through hole. A first sealing structure is provided within the first connecting channel. The first sealing structure is used to prevent impurities from entering the first connecting channel of the second receiving space.

[0007] Because the electronic device provided in this application embodiment changes the opening of the first mounting groove from facing the second structural member to facing the first structural member, when the second structural member is sealed to the frame, the portion of the frame facing the second structural member and close to the second accommodating space can be used as a sealing surface. Simultaneously, a first sealing structure is provided within the first connecting channel of the first mounting groove and the through hole to prevent external impurities entering the electronic device through the first mounting groove from entering the second accommodating space through the through hole. This ensures that, with good sealing between the components forming the second accommodating space, the second accommodating space is no longer connected to the first mounting groove, and the sealing of the second accommodating space is no longer affected by the sealing between the keycap and the key slot. Therefore, to achieve a higher sealing level for the second accommodating space, it is no longer necessary to set the sealing level at the key assembly to the same height; the sealing structure at the key assembly can adopt a lower sealing level, thereby reducing the sealing cost at the key assembly. Furthermore, using the solution provided in this embodiment, to ensure good airtightness of the second accommodating space, only one airtightness test is required; there is no need to test the airtightness between the keycap and the key slot in the key assembly. This simplifies the airtightness testing process for the second accommodating space to a certain extent and improves testing efficiency. Therefore, by adopting the solution provided in this embodiment, the sealing cost of sealing the second accommodating space can be reduced to a certain extent.

[0008] In one possible implementation, the electronic device further includes an electrical connection structure, at least partially located within a first receiving space and electrically connected to a first structural member. The electrical connection structure is also electrically connected to a circuit board assembly. The first receiving space includes a first region and a second region. The second region includes the region where the electrical connection structure is located. A first mounting groove and a through-hole are both located within the first region. A second sealing structure is provided between the first structural member and the frame, located within the first region. The second sealing structure is used to seal the connection between the first structural member and the frame, and also to prevent impurities entering the first region via the first mounting groove from entering the second region. Using the solution provided in this embodiment, even in cases of poor sealing at the button assembly, impurities entering the region between the first structural member and the frame via the button groove and the first mounting groove will not reach the second region, and thus will not contact the electrical connection structure located within the second region. This reduces the risk of damage to the electrical connection structure.

[0009] In one possible implementation, the second sealing structure is located on the side of the first mounting groove and through hole near the second region. This way, even if the button groove is not sealed tightly, impurities entering the electronic device's internal cavity through the button groove and the first mounting groove will be blocked by the second sealing structure within the first region, preventing them from entering the second region and contacting the first structural component and its electrical connections, thus avoiding any impact on the normal operation of the first structural component.

[0010] In one possible implementation, the portion of the first flexible part located within the accommodating cavity is referred to as the exposed portion. The second sealing structure includes a first sealing portion and a second sealing portion. The first sealing portion surrounds the edge of the first structural member and covers the opening of the first mounting groove. The second sealing portion is connected to the first sealing portion and surrounds the exposed portion. Although the first mounting groove communicates with the gap between the first structural member and the frame, because the first sealing portion covers the opening of the first mounting groove, even if liquid or other impurities enter the gap between the first structural member and the frame through the button groove and the first mounting groove, they can only remain within the space formed by the second sealing portion, the first structural member, and the frame, and will not spread to other areas. Furthermore, the back side of the first structural member corresponding to the space formed by the second sealing portion, the first structural member, and the frame is generally a metal layer (copper foil for heat conduction, heat dissipation, and electromagnetic shielding), resulting in a stable structure that is less prone to malfunction even when in contact with impurities. This allows for better waterproofing of the electronic device and minimizes the impact on the first structural member.

[0011] In one possible implementation, the second sealing structure covers the first mounting groove and the through hole. This way, even if liquid or other impurities enter the electronic device through the button groove and the first mounting groove, they cannot enter the gap between the first structural member and the frame, nor can they enter the second receiving space through the through hole in that gap. This results in better waterproofing of the electronic device and less impact on the first structural member. In this embodiment, the portion of the second sealing part used to block the through hole can form the aforementioned first sealing structure.

[0012] In one possible implementation, the portion of the second sealing structure located within the first communicating channel forms at least a portion of the first sealing structure. As at least a part of the first sealing structure, the second sealing structure can, to some extent, reduce the difficulty of fabricating the first sealing structure and the amount of material used.

[0013] In one possible implementation, the first sealing structure is located at the through hole. Since the size of the through hole is generally smaller than the size of the first mounting groove, placing the first sealing structure at the through hole reduces the amount of material required for the first sealing structure compared to placing it at the first mounting groove, and facilitates installation.

[0014] In one possible implementation, the first mounting slot and the button slot are connected to form a combined slot. The frame also has a second mounting slot. The second mounting slot is located on the side of the first mounting slot facing away from the middle plate and is connected to the combined slot. The opening of the second mounting slot faces the second structural member, and a second connecting channel is provided between the opening of the second mounting slot and the second receiving space. The second connecting channel can be a groove formed on the second surface of the frame, a gap between the frame and the second structural member, or both a groove and a gap.

[0015] The electronic device also includes a repair button assembly. The repair button assembly is used in case the button circuit board malfunctions. That is, when the button circuit board is working normally, the repair button assembly is not installed; after the button circuit board malfunctions, part of the button assembly is removed, and then the repair button assembly is installed. The repair button assembly includes a repair keycap and a repair circuit board. At least a portion of the repair keycap is located within a key slot. The repair circuit board includes a second main body and a second flexible portion electrically connected to the second main body. The second flexible portion is bendable. The second main body is located in a second mounting slot and is electrically connected to the repair keycap. The second flexible portion is electrically connected to the circuit board assembly through a second communicating channel.

[0016] Understandably, when the button circuit board is undamaged, i.e., when the repair circuit board is not installed, the connection surface between the second structural component and the frame is located on the side of the second mounting groove closer to the second receiving space. After the repair circuit board is installed, the connection surface between the second structural component and the frame can be located on the side of the second mounting groove away from the second receiving space, or partly on the side of the second mounting groove away from the second receiving space and partly on the side of the second mounting groove closer to the second receiving space, depending on the sealing requirements.

[0017] Both the second mounting slot and the repair circuit board are used for repair when the keypad circuit board malfunctions. When the keypad circuit board is not malfunctioning, the repair circuit board is not installed, and the second mounting slot can be left empty, shielded by the second structural member. When the keypad circuit board malfunctions, the second structural member and the original keypad assembly can be removed, and the repair circuit board can be installed in the second mounting slot. This repair circuit board can be a keypad circuit board from related technologies, and it should be installed according to those technologies. Specifically, the second main body of the repair circuit board is located in the second mounting slot, and the second flexible part bypasses the side of the frame facing the second structural member and the inner wall of the frame to reach the second side of the middle plate. The repair keycap is then replaced so that the trigger portion on the repair keycap contacts the switch on the repair circuit board. Therefore, using the electronic device provided in this embodiment, when the keypad circuit board malfunctions, repair can be performed without removing the first structural member, which can reduce repair difficulty and cost to a certain extent.

[0018] In one possible implementation, the portion of the first flexible part located within the accommodating cavity is designated as the exposed portion. A first mounting groove and a through-hole are spaced apart. The first surface of the middle plate has a connecting groove that connects the first mounting groove and the through-hole. At least a portion of the exposed portion is located within the connecting groove. The depth of the connecting groove can be determined according to usage requirements. When the depth of the connecting groove is greater than or equal to the thickness of the exposed portion, the exposed portion will not protrude from the connecting groove when it is located within it. This allows the assembly of the middle plate and the button circuit board to be flat on the side facing the first structural member, or the area with the exposed portion can form a recessed structure. In any case, it will not affect the installation of the first structural member. When the depth of the connecting groove is less than the thickness of the exposed portion, although a portion of the exposed portion will protrude from the first surface of the middle plate, this is acceptable as long as it does not affect the installation of the first structural member. Therefore, the connecting groove can reduce the adverse effects on the installation of the first structural member caused by the first flexible part wrapping around the first side of the middle plate.

[0019] In one possible implementation, a first guide surface is provided between the connecting groove and the first mounting groove, and a second guide surface is provided between the connecting groove and the through hole. Both the first and second guide surfaces are used to guide the bending of the first flexible part. The provision of the first and second guide surfaces facilitates the bending of the first flexible part.

[0020] In one possible implementation, the first structural component includes a display screen, and the second structural component includes a back cover and / or a display screen. When both the first and second structural components are display screens, the electronic device has display screens on both sides, resulting in a large display area. When the second structural component is a back cover, compared to having the second structural component as a display screen, the manufacturing cost of the electronic device can be reduced to some extent.

[0021] In one possible implementation, the first flexible part is connected to the circuit board assembly via a spring clip. This allows the portion of the first flexible part located on the second side of the middle plate to be positioned below the circuit board assembly, stacked with it, without occupying the side space of the circuit board assembly. When connected via connectors or soldering, the first flexible part needs to be routed to the side of the circuit board assembly, occupying its side space. Therefore, connecting the first flexible part to the circuit board assembly via a spring clip allows for a more compact structure between the first flexible part and the circuit board assembly compared to other connection methods.

[0022] In one possible implementation, the button circuit board has a waterproof structure. Thus, if both the first and second sealing structures perform well in terms of waterproofing, even if the seal at the button slot is not perfect, the electronic device can still achieve a high level of waterproofing, such as meeting the IP (ingress protection) X8 waterproof rating. IPX8 waterproof rating means the highest level of waterproofing, meaning the device can withstand a depth of 1.5 to 30 meters from the water surface for 30 minutes without performance degradation or leakage. IPX is an internationally certified waterproof rating; the last digit represents the waterproofing performance, with eight levels in total, and IPX8 being the highest.

[0023] With the development of the consumer electronics industry, advanced waterproofing of electronic devices is becoming increasingly common. However, the high cost of professional waterproofing for electronic devices is a major reason why low-end devices cannot currently utilize it. Among waterproofing costs, the cost of waterproofing button components is significantly higher than that of ordinary projects, and it imposes greater restrictions on the design of the frame, requiring specific waterproofing width, triggering parts, sealing ring design, and stroke. In overall device airtightness testing, the airtightness of the button components is also a key testing item, requiring testing of structural components, the bare device, and the entire device. However, the solution provided in this embodiment eliminates the need for complex sealing schemes at the button components; simple waterproofing is sufficient to achieve professional-grade waterproofing for the entire electronic device at a lower cost. The cost of waterproofing the button components is also lower, and airtightness testing related to the button components can be omitted. The solution provided in this embodiment can be used for button components in various products such as mobile phones, e-readers, and tablets. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application;

[0025] Figure 2 for Figure 1 A schematic diagram of the exploded structure of the electronic device shown.

[0026] Figure 3 For along Figure 1 A schematic diagram of the cross-sectional structure along line AA in the diagram;

[0027] Figure 4 For along Figure 1 A partial cross-sectional view of the middle BB line, where the battery is not shown.

[0028] Figure 5 for Figure 4 A magnified schematic diagram of the local structure at point A;

[0029] Figure 6 A schematic diagram of the assembly structure of a button assembly and a circuit board assembly in an electronic device provided in an embodiment of this application;

[0030] Figure 7 A partial structural diagram of the assembly structure of the frame and button assembly in an electronic device provided for related technologies;

[0031] Figure 8 A partial structural diagram of the assembly structure of the frame, button assembly, first structural component, and second structural component in an electronic device provided for related technologies;

[0032] Figure 9 For along Figure 8 Schematic diagram of the cross-sectional structure of the middle CC line;

[0033] Figure 10 The structure of the electronic device provided for the related technology at the groove is along Figure 8 Schematic diagram of the cross-sectional structure of the middle DD line;

[0034] Figure 11 A cross-sectional view of a partial structure of an electronic device provided in an embodiment of this application;

[0035] Figure 12 A partial structural diagram of the assembly structure of the first flexible part and the frame in an electronic device provided in an embodiment of this application;

[0036] Figure 13 A cross-sectional view of a partial structure of an electronic device provided in another embodiment of this application;

[0037] Figure 14 for Figure 13 A magnified view of the structure at point B in the middle;

[0038] Figure 15 A schematic diagram illustrating one possible arrangement of the second sealing structure in an electronic device according to an embodiment of this application;

[0039] Figure 16 A schematic diagram illustrating another configuration of the second sealing structure in an electronic device provided in an embodiment of this application;

[0040] Figure 17 A schematic diagram illustrating yet another configuration of the second sealing structure in an electronic device provided in an embodiment of this application;

[0041] Figure 18 for Figure 15 A magnified schematic diagram of the structure at point C in the middle;

[0042] Figure 19 A partial cross-sectional view of the assembly structure of the frame and button circuit board in an electronic device provided in an embodiment of this application;

[0043] Figure 20A cross-sectional view of a partial structure of an electronic device provided in another embodiment of this application;

[0044] Figure 21 for Figure 20 The diagram shows a partial cross-sectional view of the electronic device after the repair circuit board has been installed.

[0045] Figure 22 for Figure 20 A schematic diagram showing the positional structure of the first and second mounting slots in the electronic device shown.

[0046] Figure 23 for Figure 22 A magnified schematic diagram of the local structure at point E;

[0047] Figure 24 for Figure 21 The diagram shows the mounting structure of the keycaps and the repair circuit board of the electronic device.

[0048] Figure 25 for Figure 21 A magnified schematic diagram of the structure at point D.

[0049] Explanation of reference numerals in the attached figures:

[0050] 10. Frame; 10a. Hole; 11. Middle plate; 111. Through hole; 112. Connecting groove; 113. First guide surface; 114. Second guide surface; 115. First limiting structure; 12. Frame; 121. Left side wall; 122. Upper side wall; 123. Right side wall; 124. Lower side wall; 125. First part; 126. Second part; 127. Groove; 13. Button groove; 131. First groove; 132. Second groove; 1321. Vertical groove; 1322. Horizontal groove; 133. Third groove; 134. Fourth groove; 135. Fifth groove; 136. Protrusion; 14. First mounting groove; 15. Second mounting groove; 16. First sealing structure; 17. Second sealing structure; 171. First sealing part; 172. Second sealing part; 18. Sealing ring; 19. First connecting channel;

[0051] 20. First structural component;

[0052] 30. Second structural component;

[0053] 40. Second storage space; 41. Battery; 42. First storage space;

[0054] 50. Circuit board assembly; 51. System chip; 52. UFS; 53. Bluetooth module; 54. Screen display and operation module; 55. Customer identification module card; 56. Universal serial bus interface;

[0055] 60. Key assembly; 61. Keycap; 611. Keycap body; 611a. Inner side; 611b. Outer side; 612. Hook; 613. Trigger part; 62. Switch; 63. Key circuit board; 631. First main body; 632. First flexible part; 632a. Exposed part; 633. Spring; 65. Fixing member; 651. Second limiting structure;

[0056] 70. Lug fastener; 80. Sealing layer;

[0057] 90. Repair the key assembly; 91. Repair the keycaps; 92. Repair the switch; 93. Repair the circuit board; 931. Second main body; 932. Second flexible part;

[0058] a) First area; b) Second area. Detailed Implementation

[0059] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0060] In the description of this application, it should be understood that the terms "inner" and "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0061] To facilitate a clear description of the technical solutions in the embodiments of this application, the terms "first" and "second" are used in the embodiments of this application to distinguish identical or similar items with essentially the same function and effect. For example, the first limiting part and the second limiting part are only used to distinguish different limiting parts and do not limit their order. Those skilled in the art will understand that the terms "first" and "second" do not limit the quantity or execution order, and the terms "first" and "second" are not necessarily different.

[0062] It should be noted that in this application, the terms "in one embodiment" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "in one embodiment" or "for example" in 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 "in one embodiment" or "for example" is intended to present the relevant concepts in a specific manner.

[0063] In this application, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0064] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments.

[0065] This application provides an electronic device. The aforementioned electronic device may also be referred to as a terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), etc. Specific product forms of the electronic device may include mobile phones, tablets, desktop computers, PDAs (personal digital assistants), laptops, ultra-mobile personal computers (UMPCs), wearable devices (such as headphones, smart bracelets, smart glasses, virtual reality (VR) / augmented reality (AR) devices), in-vehicle devices, home appliances (such as electric toothbrushes, flashlights), gaming devices (such as game controllers, joysticks, and mice), multimedia players, and other electronic devices with buttons. This application does not specifically limit the form of the electronic device.

[0066] Please see Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Figure 2 for Figure 1 The diagram shows the exploded structure of the electronic device. It is understandable that... Figure 1 and Figure 2 The electronic device shown is merely an example; the electronic device may have more or fewer components than those shown in the figure. The structure illustrated in the embodiments of this application does not constitute a specific limitation on the electronic device. For ease of understanding, Figure 1 A coordinate system is established in this paper with the length direction of the electronic device as the X-axis, the width direction as the Y-axis, and the thickness direction as the Z-axis. Other figures in this paper that also include coordinate systems have coordinate directions that correspond to... Figure 1 same.

[0067] The electronic device includes a frame 10, and a first structural member 20, a second structural member 30, and a button assembly 60, all located on the frame 10. One or more frames 10 can be provided. When multiple frames 10 are provided, they can be slidably connected, connected via a hinge structure, or connected in other ways, depending on the function of the electronic device. A single frame 10 generally has a length direction, a width direction, and a height direction. Generally, the dimension of a single frame 10 in the length direction X is larger than its dimension in the width direction Y, and the dimension in the width direction Y is larger than its dimension in the height direction Z. In some cases, the dimension of a single frame 10 in the length direction X can also be the same as its dimension in the width direction Y. The frame 10 has two large surfaces arranged opposite to each other. These large surfaces refer to the two largest surfaces in the frame 10 that are arranged opposite to each other, which are also the surfaces formed by the long side (the length direction of the long side is consistent with the length direction X of the frame 10) and the wide side (the length direction of the wide side is consistent with the width direction Y of the frame 10). One of the two large faces is designated as the first face of frame 10, and the other large face is designated as the second face of frame 10. That is, frame 10 has a first face and a second face that are arranged opposite to each other.

[0068] The second structural member 30 is disposed opposite to and connected to at least a portion of the second surface of the frame 10. The second structural member 30 and the frame 10 form a receiving cavity. The receiving cavity is used to install at least one of a battery, circuit board assembly, electrical connector, etc. The first structural member 20 is disposed opposite to and connected to at least a portion of the first surface of the frame 10. The first structural member 20 may form a first receiving space with the frame 10, or it may be attached to the second surface of the frame 10 without a first receiving space between them, depending on the usage requirements. When the second structural member 30 and the frame 10 form a first receiving space, this first receiving space may communicate with or not communicate with the receiving cavity formed by the first structural member 20 and the frame 10 (hereinafter referred to as the second receiving space), depending on the usage requirements. The first receiving space may be used to accommodate electrical connectors, circuit board assemblies, etc., depending on the usage requirements.

[0069] The aforementioned circuit board assembly includes a circuit board and electronic components mounted on the circuit board. The circuit board can be a flexible printed circuit board, a rigid printed circuit board, or a rigid-flex printed circuit board. Electronic components include, but are not limited to, power management integrated circuits (PMICs), system-on-chips (SoCs), mobile communication modules, wireless communication modules, audio modules, sensor modules, motors, indicators, cameras, etc. The mobile communication module and wireless communication module can each include filters, switches, radio frequency power amplifiers, low noise amplifiers (LNAs), etc. The audio module can include an audio power amplifier, and speakers, receivers, microphones, headphone jacks, etc., connected to the audio power amplifier. The sensor module can include pressure sensors, gyroscopes, barometric pressure sensors, magnetic sensors, accelerometers, distance sensors, proximity sensors, fingerprint recognition devices, temperature sensors, touch sensors, ambient light sensors, bone conduction sensors, etc.

[0070] It is understandable that when an electronic device has multiple circuit board assemblies, the structures of each circuit board assembly can be the same or different.

[0071] For example, such as Figure 3 As shown, Figure 3 For along Figure 1 The cross-sectional view along line AA shows that the second accommodating space 40 contains a battery 41 and two circuit board assemblies 50. The components on the two circuit board assemblies 50 are different. Figure 3 From the perspective of [the source], the circuit board assembly 50 located above the battery 41 is the motherboard assembly. Electronic components on the motherboard assembly include, but are not limited to, a System on Chip (SoC) 51, a UFS (Uniform File System) 52, a Bluetooth module 53, and a screen display and operation module 54. The circuit board assembly 50 located below the battery 41 is the sub-board assembly. Electronic components on the sub-board assembly include, but are not limited to, a Subscriber Identity Module (SIM) card 55 and a Universal Serial Bus (USB) interface 56.

[0072] The aforementioned motherboard assembly and sub-board assembly can be connected to the battery 41 via electrical connectors; alternatively, the motherboard assembly can be connected to the battery 41 via one electrical connector, and the motherboard assembly can be connected to the sub-board assembly via another electrical connector. These electrical connectors include, but are not limited to, flexible printed circuit boards (FPCs), wires, and connectors. In some optional embodiments, the electrical connectors may include board-to-board (BTB) connectors located on the motherboard assembly and a flexible printed circuit board that plugs into the board-to-board connectors. The board-to-board connectors can be zero-insertion-force (ZIF) connectors, edge card connectors, sliding connectors, etc., selected according to usage requirements. In other embodiments, the flexible printed circuit board can also be directly soldered to the circuit board using an FOB (FPC on Board, referring to a soldering technology that combines flexible and rigid boards) method.

[0073] In other embodiments, the second accommodating space 40 may only contain the circuit board assembly 50, and the electronic device obtains power from an external power source. When the electronic device has multiple second accommodating spaces 40, the battery 41, the circuit board assembly 50, and the electrical connectors may be located in different second accommodating spaces 40, which can be set according to the usage requirements and is not limited here.

[0074] The first structural component 20 and the second structural component 30 mentioned above can be structures such as a display screen and a back cover, respectively. The structures of the two can be the same or different, depending on the usage requirements.

[0075] For example, such as Figure 1 and Figure 3As shown, in some embodiments, the electronic device is a candybar-type mobile phone with a frame 10. A first structural member 20 is a display screen, disposed opposite to and connected to at least a portion of the first surface of the frame 10, and can cover the entire area of ​​the first surface of the frame 10 or only a portion thereof. A second structural member 30 is a back cover, disposed opposite to and connected to at least a portion of the second surface of the frame 10, and can cover the entire area of ​​the second surface of the frame 10 or only a portion thereof. The second structural member 30 and the frame 10 form a second receiving space 40. The second receiving space 40 contains a battery 41, a circuit board assembly 50, electrical connectors (not shown in the figure), etc. In this embodiment, there is generally also a gap between the first structural member 20 and the middle plate 12 in the thickness direction of the electronic device, and a smaller first receiving space 42 can be formed between them. At least a portion of the electrical connectors (not shown in the figure) connected to the display screen can be placed in this first receiving space 42. The frame 10 generally has holes 10a for the aforementioned electrical connectors connected to the display screen to pass through. The first receiving space 42 is connected to the second receiving space 40 through the hole 10a.

[0076] In other embodiments, the electronic device is a foldable screen phone, not shown in the figures. The electronic device has multiple frames. The multiple frames are rotatably connected by a pivot structure to form a support device. The ends of two adjacent frames near the pivot structure can rotate around the pivot structure located between the two frames, thereby bringing the ends of the two frames away from the pivot structure closer or further apart, allowing the electronic device to present different states such as folded or unfolded. The first structural component is a display screen, located on the first side of the support device (the side facing the first surface of the frame), which can cover the entire area of ​​the first surface of the support device or a portion thereof. There are multiple second structural components. The number of second structural components can be the same as or less than the number of frames. All second structural components can be back covers, or some second structural components can be displays and others can be back covers. When a second structural component is a back cover, a single second structural component is generally located on the second side of a single frame (the side facing the second surface of the frame), covering the entire area of ​​the second surface of the support device or a portion thereof. When the second structural component is a display screen, a single second structural component can be located on a single frame, covering at least a portion of the second surface of that single frame, or it can span multiple frames, covering at least a portion of the second surface of multiple frames. Regardless of whether the second structural component is a back cover or a display screen, it generally forms a second accommodating space with the frame. The second accommodating space houses a battery, circuit board assembly, electrical connectors, etc. In this embodiment, there is generally also a gap between the first structural component and the frame, which can also form a smaller second accommodating space. This second accommodating space can hold electrical connectors connected to the display screen. At least one frame generally has holes for the aforementioned electrical connectors connected to the display screen to pass through. The second accommodating spaces on both sides of the frame with the holes are connected through the holes.

[0077] In other embodiments, the frame, the first structural member, and the second structural member may have other configurations, which may vary depending on the type and function of the electronic device.

[0078] To improve the usability and convenience of electronic devices, buttons are generally included. For example... Figure 1 As shown, the button assembly 60 is located on the side of the frame 10, and there may be one or more, depending on the usage requirements. For example, the button assembly 60 may include, but is not limited to, a power button, volume buttons, etc., depending on its function. The button assembly 60 generally includes multiple components, and its specific structure needs to be described in conjunction with other structures of the electronic device.

[0079] For ease of explanation, the following embodiments use a candybar-type mobile phone as an example, with a display screen as the first structural component and a back cover as the second structural component, to illustrate the structure of the button assembly and its cooperation with other structures in the electronic device.

[0080] Please see Figure 2 The frame 10 includes a middle plate 11 and a frame 12 surrounding the middle plate 11. The middle plate 11 is generally made of metal, but can also be made of composite materials or non-metallic materials, depending on the application. The middle plate 11 is used to support or fix batteries, circuit board assemblies, etc. The frame 12 is generally formed by multiple side walls joined end-to-end, forming a frame structure. Figure 2 As shown, the frame 12 includes a left side wall 121, an upper side wall 122, a right side wall 123, and a lower side wall 124 that are connected end to end. The side of each of these side walls away from the middle plate 11 is exposed on the surface of the electronic device. Each of these side walls can be integrally formed with the middle plate 11, or they can be separately set and connected to the middle plate 11.

[0081] The sidewalls of frame 12 can be either a one-piece molded structure or a split-connection structure. For example... Figure 3 As shown, in some embodiments, each sidewall includes a first portion 125 and a second portion 126. The first portion 125 is integrally formed on the edge of the middle plate 11, and the second portion 126 is located on the side of the first portion 125 away from the middle plate 11 and is connected to the first portion 125. The materials of the first portion 125 and the second portion 126 are generally different. For example, in some embodiments, the first portion 125 is made of a metallic material, and the second portion 126 is made of a non-metallic material; in other embodiments, the first portion 125 is made of a non-metallic material, and the second portion 126 is made of a metallic material, depending on the specific application requirements.

[0082] As mentioned above, one or more button components 60 can be provided. When multiple button components 60 are provided, the multiple button components 60 can be located on multiple side walls of the frame 12, or they can all be provided on one side wall of the frame 12. For example, in some embodiments, multiple button components 60 are provided, and all multiple button components 60 are provided on the left side wall 121 of the frame 12; in other embodiments, multiple button components 60 are provided, some of which are provided on the left side wall 121 of the frame 12, and others are provided on the right side wall 123 of the frame 12.

[0083] Figure 4 For along Figure 1 A partial cross-sectional view of the middle BB line, where the battery is not shown. Figure 5 for Figure 4 A magnified schematic diagram of the structure at point A in the middle. (See diagram below.) Figure 4 and Figure 5 As shown, the button assembly 60 includes a keycap 61, a switch 62, and a button circuit board 63.

[0084] A button groove 13 is provided on the side wall of the frame 12. The button groove 13 is a blind groove, and its depth is less than the thickness of the frame 12. The depth of the button groove 13 refers to the depth of the button groove within the frame 12. Figure 5 The dimension in the Y direction, and the thickness of border 12 also refer to the dimension of border 12 in the Y direction. Figure 5 The dimension in the Y direction. For example... Figure 5 As shown, the keycap 61 includes a cap body 611, an ear loop 612, and a trigger portion 613 located on the cap body 611. Since electronic devices are generally thin, the cap body 611 is typically designed in a strip shape to accommodate the device's thickness. The length direction of the strip is consistent with the length direction of the electronic device, both along the X direction in the figure. It should be noted that the strip shape of the cap body 611 is only one way to adapt to the form factor of the electronic device; in different devices, the cap body 611 can be designed in different shapes. For example, in a smart speaker, the cap body 611 can be cylindrical, elliptical, etc., and in a remote control, the cap body 611 can also be cross-shaped, etc.

[0085] The ear loop 612 is located on the inner side 611a of the cap body 611. The inner side 611a of the cap body 611 is the side of the cap body 611 facing the middle plate 11, and it is also the side of the keycap 61 that is hidden inside the electronic device after installation. There are two ear loops 612, located at both ends of the same cap body 611 in the length direction X. It can be understood that when the cap body 611 is of other shapes, the number of ear loops 612 can also be three, four, or other numbers. Multiple ear loops 612 can be located at both ends of the cap body 611 in other directions (such as the width direction, diagonal direction, etc.), or they can be arranged around the cap body 611 and spaced apart, as long as it meets the usage requirements.

[0086] At least a portion of the keycap 61 is disposed within the key slot 13 and can be pressed along the depth direction Y of the key slot 13. The at least portion of the keycap 61 being disposed within the key slot 13 includes the following cases: First, such as... Figure 5 As shown, most of the keycap 61 is located inside the key slot 13, with a small portion protruding from the key slot 13, which makes it easy to press; the second type, not shown in the figure, has the entire keycap 61 located inside the key slot 13, with only the outer side 611b of the cap body 611 (the side opposite to the inner side 611a) exposed outside the frame 12, so that the surface of the electronic device is flat.

[0087] To ensure the aesthetics of electronic devices and facilitate the installation of keycaps 61, the key slot 13 generally consists of several parts. For example... Figure 5As shown, the button slot 13 includes a first slot 131, a second slot 132, a third slot 133, a fourth slot 134, and a fifth slot 135 that are interconnected. The first slot 131 is positioned along the thickness direction of the frame 12 (i.e., along the Y direction in the figure) to accommodate the cap 611 and allow the cap 611 to move along its own depth direction. It can be understood that the depth of the first slot 131 can be greater than, less than, or approximately equal to the thickness of the cap 611, depending on the specific usage requirements. In some embodiments, to facilitate pressing of the keycap 61, the depth of the first groove 131 is less than the thickness of the cap 611, so that at least a portion of the cap 611 protrudes from the sidewall of the frame 12; in other embodiments, to make the side of the electronic device flat, the depth of the first groove 131 is equal to the thickness of the cap 611, so that the outer side 611b of the cap 611 is flush with the outer sidewall of the frame 12.

[0088] For aesthetic purposes, the shape of the first groove 131 generally matches the shape of the cap body 611. Since the cap body 611 is strip-shaped, the first groove 131 is also strip-shaped. The first groove 131 is a blind groove, and its depth is less than the thickness of the frame 12, forming a bottom surface within the frame 12. The second groove 132, the third groove 133, the fourth groove 134, and the fifth groove 135 are formed on the aforementioned bottom surface and are all connected to the first groove 131.

[0089] The second groove 132 and the third groove 133 are located at opposite ends of the bottom surface along the length direction X, respectively, and are used to accommodate two hanging ears 612 and allow the hanging ears 612 to move along the depth direction Y of the first groove 131. For ease of description, the hanging ear inserted into the second groove 132 will be referred to as hanging ear 612a, and the hanging ear inserted into the third groove 133 will be referred to as hanging ear 612b.

[0090] The shape of the second groove 132 is adapted to the shape of the lug 612a. Since the lug 612a is hook-shaped or L-shaped, the cross-section of the second groove 132 is also hook-shaped or L-shaped. However, since the second groove 132 also needs to allow the lug 612a to move along the depth direction Y of the first groove 131, the size of the second groove 132 is larger than the size of the lug 612a. The second groove 132 includes a vertical groove 1321 communicating with the first groove 131 and a horizontal groove 1322 communicating with the vertical groove 1321. The vertical groove 1321 is spaced apart from the side wall of the first groove 131 and communicates with the bottom surface of the first groove 131. The horizontal groove 1322 is located at the end of the vertical groove 1321 away from the first groove 131 and communicates with the vertical groove 1321. The horizontal groove 1322 is spaced apart from the first groove 131. The two sidewalls of the horizontal groove 1322 and the first groove 131 that are close to each other, as well as the sidewall of the vertical groove 1321 that connects the two sidewalls, form a protrusion 136 that protrudes toward the side where the third groove 133 is located. After the keycap 61 is installed, the protrusion 136 is inserted into the cavity formed by the ear loop 612a and the cap body 611, and is used to prevent the ear loop 612a from coming out of the key groove 13.

[0091] The shape of the ear loop 612b is generally hook-shaped or L-shaped. The third groove 133 is generally a rectangular groove with a volume larger than that of the ear loop 612b. After the ear loop 612b is inserted into the third groove 133, there is no protrusion between the first groove 131 and the third groove 133 to limit the position of the ear loop 612b. However, a fourth groove 134 is provided on the side of the third groove 133 away from the second groove 132. This fourth groove 134 is used to install the ear loop fastener 70. At least a portion of the ear loop fastener 70 can be inserted into the cavity formed by the ear loop 612b and the cap 611 after installation to limit the position of the ear loop 612b and prevent it from coming out of the button groove 13. The aforementioned ear loop fastener 70 can be a pin or a steel plate, etc., depending on the application requirements.

[0092] When installing the keycap 61, the keycap 61 can be tilted so that one of the lugs 612 (i.e., lug 612a) is inserted into the protrusion 136. Then, with the help of a tool, the other end of the keycap 61 is pressed into the key slot 13. At this time, the lug 612a of the keycap 61 is inserted and limited to the protrusion 136, while the lug 612b is suspended in the third slot 133. Then, with the help of a tool, the lug fixing piece 70 can be inserted into the fourth slot 134 from one side of the frame 12 along the width direction of the frame 12 (which is also the thickness direction of the electronic device, i.e., the Z direction in the figure). After the ear fastener 70 is inserted, at least a portion of the ear fastener 70 will be located in the third groove 133 and / or the first groove 131, and on the side of the ear 612b near the opening of the first groove 131. In this way, the position of the originally suspended ear 612b can be limited by the ear fastener 70, thereby preventing it from coming out of the first groove 131.

[0093] The trigger part 613 is located on the inner side 611a of the keycap body 611, that is, on the side of the keycap body 611 where the ear loops 612 are provided. The trigger part 613 is located between the two ear loops 612. The trigger part 613 can be integrally connected to the keycap 61, or it can be separately set and connected to the keycap 61. The trigger part 613 can be columnar, block-shaped, or other shapes, depending on the usage requirements. The trigger part 613 can move synchronously with the keycap body 611.

[0094] The fifth groove 135 is located on the bottom surface of the first groove 131 and communicates with the first groove 131. The fifth groove 135 is located between the second groove 132 and the third groove 133, and is used for the insertion and movement of the trigger part 613. A sealing ring 18 is generally provided on the outside of the trigger part 613. The sealing ring 18 is generally interference-fitted with the inner wall of the fifth groove 135, and can also move with the movement of the trigger part 613, so that the keycap 61 can be pressed, but the sealing effect between the keycap 61 and the key groove 13 is not affected.

[0095] like Figure 5 As shown, in addition to the key slot 13, the side wall of the frame 12 is also provided with a first mounting slot 14. The first mounting slot 14 is used to mount the key circuit board 63. The first mounting slot 14 is connected to the key slot 13. A switch 62 is provided at the corresponding position of the key circuit board 63 and the trigger part 613, and the switch 62 is connected to the circuit on the key circuit board 63. The switch 62 is located at the connection between the first mounting slot 14 and the fifth slot 135. The switch 62 generally includes two metal contacts spaced apart from each other. One metal contact is connected to the circuit mentioned above, and this metal contact is the first contact. The other metal contact is located on the side near the keycap 61 and is connected to the key circuit board 63 through a deformable structure. This metal contact is referred to as the second contact.

[0096] Figure 6 This is a schematic diagram of the assembly structure of a button assembly and a circuit board assembly in an electronic device provided in an embodiment of this application.

[0097] like Figure 6 As shown, the button circuit board 63 is electrically connected to the circuit board assembly 50. Under the control of the circuit board assembly 50, pressing the button assembly 60 can realize functions such as controlling the volume of the electronic device, powering on / off, restarting, capturing the screen, starting loading, and launching applications (such as voice assistants, cameras, etc.) as shortcut keys.

[0098] In use, pressing the keycap 61 causes the trigger portion 613 on the keycap 61 to approach and press the switch 62. During this process, the trigger portion 613 first contacts the second contact and applies pressure towards the first contact. Then, the deformation structure deforms, and the trigger portion 613 moves the second contact towards the first contact until the two contacts are in contact, forming a closed loop with the circuit described above. A signal is then sent to the control module on the circuit board assembly 50. The control module then executes the corresponding function based on the received signal, such as increasing the volume or launching the camera application. The control module may include a processor, a SOC chip, or other single or multiple electronic components capable of performing the above functions. In other embodiments, the switch 62 may also adopt other structures, such as a dome switch or a tactile switch, depending on the specific application requirements.

[0099] Figure 7 A partial structural diagram of the assembly structure of the frame and button components in an electronic device provided for related technologies. (Example) Figure 7 As shown, the button circuit board 63 generally includes a first main body portion 631 and a first flexible portion 632. The first main body portion 631 is the main body of the button circuit board 63, located within the first mounting groove 14, and the first flexible portion 632 is the part of the button circuit board 63 used for connection with the circuit board assembly 50, which can be bent and is located outside the first mounting groove 14.

[0100] The first main body 631 can be a flexible printed circuit board, a rigid printed circuit board, or a rigid-flex printed circuit board. The first main body 631 is generally an elongated structure and is located within the first mounting groove 14. The first flexible part 632 is generally a flexible printed circuit board, but the part closest to the first main body 631 can be a flexible printed circuit board, while the other parts can be rigid printed circuit boards or rigid-flex printed circuit boards.

[0101] Figure 8 A partial structural diagram of the assembly structure of the frame, button assembly, first structural component, and second structural component in an electronic device provided for related technologies; Figure 9 For along Figure 8 Schematic diagram of the cross-sectional structure of the middle CC line; Figure 10The structure of the electronic device provided for the related technology at the groove is along Figure 8 Schematic diagram of the cross-sectional structure of the DD line.

[0102] like Figure 8 and Figure 9 As shown, in related technologies, the opening of the first mounting groove 14 faces the second structural member 30. The first main body portion 631 is located within the first mounting groove 14. The first flexible portion 632 extends through the opening of the first mounting groove 14, wraps around the second side of the frame 12 to the second receiving space 40 formed between the second side of the frame 10 and the second structural member 30, and is electrically connected to the circuit board assembly 50.

[0103] like Figure 7 and Figure 10 As shown, a groove 127 is provided on the side of the frame 12 facing the second structural member 30 (i.e., the second side of the frame 12). The portion of the first flexible part 632 covering the second side of the frame 12 (i.e., the portion of the first flexible part 632 located between the frame 12 and the second structural member 30) is located within the groove 127. This ensures that the thickness of the combined structure of the first flexible part 632 and the frame 12 does not increase in the portion where the first flexible part 632 is located.

[0104] In order for the portion of the first flexible part 632 located between the frame 12 and the second structural member 30 to fall completely into the groove 127, the size of the groove 127 in the X direction is larger than the size of the portion of the first flexible part 632 located in the groove 127 in the X direction, and the size of the groove 127 in the Z direction is larger than the size of the portion of the first flexible part 632 located in the groove 127 in the Z direction.

[0105] The aforementioned second structural component 30 is generally sealed to the frame 12 via a sealing layer 80. The sealing layer 80 can be composed of a single layer of adhesive or a multi-layer structure, depending on the application requirements.

[0106] To ensure a good seal, the contact surface between the sealing layer 80 and the frame 12 needs to have a certain width of connecting surface, which needs to be continuous. This width is referred to as the sealing width, and it can be determined according to sealing requirements, such as any value greater than or equal to 3mm, or any value greater than or equal to 2mm. However, in related technologies, the opening of the first mounting groove 14 for accommodating the button circuit board 63 faces the second structural member 30; that is, the opening is located on the side of the frame 12 used for sealing connection with the second structural member 30, and the area where the opening is located cannot be bonded to the sealing layer 80.

[0107] Furthermore, since the first flexible portion 632 extends from the second side of the frame 12 (the side of the frame 12 facing the second structural member 30) to the second receiving space 40, this will cause at least the following problems: First, the first flexible portion 632 will cover at least a portion of the area on the second surface of the frame 12 located between the first mounting groove 14 and the middle plate 11, causing the sealing layer 80 to be unable to contact the portion covered by the first flexible portion 632 in this area; Second, when the first flexible portion 632 extends from the second side of the frame 12, it will form a protruding structure that arches towards the second structural member 30, creating a large gap between it and the second surface of the frame 12, and the height of this gap varies in different areas, causing the first flexible portion to... The gap between 632 and the frame 12 is not easy to seal; third, since the frame 12 needs to have a certain height to ensure the stability of its mechanical structure, the depth of the groove 127 cannot be too large. In order to seal the gap between the first flexible part 632 and the frame 12, a sealing layer can only be set on the second side of the frame 12 and a sealing layer can be set on the second structural member 30. Then the two sealing layers are bonded together. However, since the sealing layers on both sides are layered structures with the same thickness, after the two sealing layers are bonded together, a triangular cavity will be formed in the part near the first flexible part 632, which cannot achieve a complete seal between the first flexible part 632 and the second side of the frame 12.

[0108] Due to the aforementioned problems, in order to ensure the sealing effect between the second structural component 30 and the frame 12, the sealing layer 80 is generally located outside the first mounting groove 14 in the frame 12 (i.e., the frame 12 is...). Figure 9 The portion outlined by the dashed line L1 is bonded together to achieve a seal between the second structural member 30 and the frame 12. However, with this method, due to the gap between the first flexible part 632 and the second surface of the frame 12, even after the frame 12 and the second structural member 30 are sealed together by the sealing layer 80, the second accommodating space 40 can still communicate with the external space through the gap between the second structural member 30 and the frame 12, the first mounting groove 14, and the button groove 13.

[0109] At this point, to ensure the airtightness of the second accommodating space 40, in addition to ensuring the airtightness of the sealing layer 80 between the second structural component 30 and the frame 12, it is also necessary to ensure the airtightness between the keycap 61 and the key slot 13. As mentioned above, the design of the keycap 61 and the key slot 13 involves numerous structures, which makes the sealing (including waterproofing) between the keycap 61 and the key slot 13 subject to requirements on the waterproof width, the design of the trigger part, the design of the sealing ring, and the travel, etc., and the sealing structure at this location imposes significant limitations on the design of the frame 10. Furthermore, electronic devices generally have multiple keycaps 61, and each keycap 61 requires a waterproof structure, which leads to a high cost for waterproofing the second accommodating space 40 and the overall electronic device. In addition, when performing a sealing test (also known as an airtightness test) on the second accommodating space 40 of an electronic device using the solution in the relevant technology, it is necessary to check at least the airtightness between the keycap 61 and the key groove 13 and the airtightness between the second structural component 30 and the frame 12. Among them, the airtightness test between the keycap 61 and the key groove 13, that is, the airtightness test at the key assembly 60, is the key test item.

[0110] To address the aforementioned issues, this application provides an electronic device. This device alters the orientation of the first mounting groove and the mounting method of the key circuit board. Instead of the key circuit board moving from the side facing the second structural member (i.e., the second side of the frame) to the second receiving space, it moves from the side facing the first structural member (i.e., the first side of the frame) to the second receiving space, thus connecting with the circuit board assembly. This allows all or most of the area of ​​the side of the frame facing the second structural member to be used as a connection surface for connecting with the sealing layer. With the second structural member well-sealed with the frame through the sealing layer, there is no longer a gap between the second structural member and the frame communicating with the first mounting groove. Therefore, the sealing between the keycap and the key groove no longer affects the sealing of the second receiving space. When testing the airtightness of the second receiving space, it is unnecessary to test the airtightness at the key groove, reducing the airtightness testing steps for the second receiving space to some extent. Simultaneously, ensuring the airtightness of the second receiving space no longer requires a high sealing level at the key assembly location, allowing for a lower-level waterproofing structure at the key assembly location, thereby reducing the manufacturing cost of the sealing structure.

[0111] Figure 11 This is a cross-sectional view of a partial structure of an electronic device provided in an embodiment of this application; only part of the frame, the first structural member 20, and the second structural member 30 are shown in the figure, and electronic components on the circuit board assembly 50 are not shown. Figure 11As shown, the second structural member 30 and the frame 10 form a second receiving space 40, and at least a circuit board assembly 50 is provided in the second receiving space 40. A first receiving space 42 is formed between the first structural member 20 and the frame 10. A first mounting groove 14 is provided on the frame 12, and the opening of the first mounting groove 14 faces the first structural member 20. At the same time, the middle plate 11 has a through hole 111 extending through its first and second surfaces in a preset direction. The through hole 111 can be set along the thickness direction of the middle plate 11, or along other directions at an angle to the thickness direction, and the through hole 111 can be spaced apart from the first mounting groove 14, or it can be directly connected to the first mounting groove 14, depending on the installation requirements of the first flexible part 632 and the support strength of the frame.

[0112] When the first flexible part 632 is bent at a right angle to the first main body part 631, the through hole 111 can be perpendicularly connected to the first mounting groove 14, forming an L-shaped connecting groove. When the first flexible part 632 is long enough to be bent multiple times, the through hole 111 can be spaced apart from the first mounting groove 14, and the two are connected through the first accommodating space. In this case, the through hole 111 can be parallel to the first mounting groove 14, and the depth direction of both can be set along the thickness direction Z of the electronic device. When the button circuit board 63 is installed, the first main body part 631 can be placed in the first mounting groove 14 first, and the part of the first flexible part 632 that extends out of the first mounting groove 14 can be bent toward the side where the through hole 111 is located, and then go around to the side of the middle plate 11 facing the circuit board assembly 50, that is, the second side of the middle plate 11, and electrically connect with the circuit board assembly 50.

[0113] Regardless of the method used, the first flexible part 632 can be soldered to the circuit board assembly 50, connected to the circuit board assembly 50 via a connector, or connected to the circuit board assembly 50 via a spring contact 633, depending on the application requirements. It is understood that when the first flexible part 632 is connected to the circuit board assembly 50 via the spring contact 633, the portion of the first flexible part 632 located on the second side of the middle plate 11 can be positioned between the circuit board assembly 50 and the middle plate 11, stacked with the circuit board assembly 50, without occupying the side space of the circuit board assembly 50. However, when connected via a connector or soldering method, the first flexible part 632 needs to be routed to the side of the circuit board assembly 50, occupying its side space. Therefore, connecting the first flexible part 632 to the circuit board assembly 50 via the spring contact 633 allows for a more compact structure between the first flexible part 632 and the circuit board assembly 50 compared to other connection methods.

[0114] When the through hole 111 is spaced apart from the first mounting groove 14, the portion of the first flexible part 632 located on the second side of the middle plate 11, that is, the portion connected to the circuit board assembly 50, can be supported and limited by the frame 10. Figure 12 As shown, Figure 12 This is a partial structural diagram of the assembly structure of the first flexible part and the frame in an electronic device according to an embodiment of this application. The button circuit board 63 also includes a fixing member 65 located on the side of the first flexible part 632 facing away from the circuit board assembly 50. The fixing member 65 is generally made of metal parts such as steel sheets and is used to support and limit the position of the first flexible part 632. The fixing member 65 is provided with a second limiting structure 651 for plugging or snapping into the first limiting structure 115 on the middle plate 11. The second limiting structure 651 can be a protrusion, a groove, or other structures, depending on the specific structure of the first limiting structure 115 and the installation requirements. Figure 12 As shown, the first limiting structure 115 is a groove for accommodating the protruding structure, and the second limiting structure 651 is a protruding structure that protrudes to one side along the surface of the fixing member 65. In other embodiments, the first limiting structure 115 can be a protruding structure, and the second limiting structure 651 can be a groove or notch for accommodating the protruding structure.

[0115] When the through hole 111 is directly connected to the first mounting groove 14, the position of the connection between the first flexible part 632 and the circuit board assembly 50 can be limited by the limiting structure provided on the circuit board assembly, or it can be supported or limited by the fixing member provided on the side of the first flexible part 632 facing the first structural member 20.

[0116] Figure 13 This is a cross-sectional view of a partial structure of an electronic device provided in another embodiment of this application. Figure 14 for Figure 13 A magnified schematic diagram of the structure at point B in the middle.

[0117] like Figure 11 , Figure 13 and Figure 14As shown, in this embodiment, the through hole 111 communicates with at least a portion of the first receiving space 42 to form a first communicating channel 19. The first flexible part 632 is electrically connected to the circuit board assembly 50 through the first communicating channel 19. The first flexible part 632 passes through the through hole 111. A first sealing structure 16 is provided in the first communicating channel 19. The first sealing structure 16 is used to block external impurities that enter the electronic device through the first mounting groove 14 from entering the second receiving space 40 through the through hole 111. The first sealing structure 16 provided in the first communicating channel means that the first sealing structure 16 is provided at any or multiple positions between the outlet of the first mounting groove 14 and the outlet of the through hole 111 along the direction from the button groove 13, the first mounting groove 14 to the through hole 111, as long as the impurities entering the first mounting groove 14 through the button groove 13 do not enter the second receiving space 40 through the through hole 111. For example, the first sealing structure 16 can be provided at the outlet of the first mounting groove 14, or it can be provided between the outlet of the first mounting groove 14 and the inlet of the through hole 111, that is, within the first receiving space 42. Figure 11 As shown, it can also be set inside the through hole 111, such as Figure 14 As shown, the specifics can be determined based on usage needs.

[0118] The first sealing structure 16 can be made of sealant, a sealing sleeve, or other similar structures. The first sealing structure 16 can be prepared after the first flexible part 632 is installed, or it can be fitted over the first flexible part 632, depending on the specific structure of the first sealing structure 16. For example, if the first sealing structure 16 uses sealant, the sealant can be applied by dotting between the inner wall of the first flexible part 632 and the through hole 111 after the first flexible part 632 passes through the through hole 111; if the first sealing structure 16 uses a sealing sleeve, the sealing sleeve can be fitted over the portion of the first flexible part 632 located inside the through hole 111, or it can be wrapped around the portion of the first flexible part 632 located inside the through hole 111. In other embodiments, the first sealing structure 16 can also be a combination of sealant and a sealing sleeve, or other structures, depending on the waterproofing requirements.

[0119] It should be noted that the reason why the first sealing structure 16 can be set at the through hole 111 to achieve the seal between the first flexible part 632 and the inner wall of the through hole 111 is because the through hole 111 is located on the middle plate 11, and its size can be set to be larger. This gives more options for the first sealing structure 16, and a structure with good sealing can be used to seal this area. In addition, the through hole 111 penetrates the middle plate 11 along the thickness direction of the middle plate 11. After the first flexible part 632 is inserted into the through hole 111, with the portion of the first flexible part 632 extending into the second receiving space 40 remaining vertical, the gap between the first flexible part 632 and the through hole 111 can be seen when viewed from the second surface of the middle plate 11 to the first surface. This facilitates operations such as dispensing adhesive, and also facilitates the installation of the first sealing structure 16.

[0120] Since the electronic device provided in this application embodiment changes the opening of the first mounting groove 14 from facing the second structural member 30 to facing the first structural member 20, when the second structural member 30 is sealed to the frame 12, the part of the side of the frame 12 facing the second structural member 30 that is close to the second accommodating space 40 can be used as a sealing surface. At the same time, a first sealing structure 16 is provided in the first connecting channel 19 of the first mounting groove 14 and the through hole 111 to block external impurities that enter the electronic device through the first mounting groove 14 from entering the second accommodating space 40 through the through hole 111. In this way, when the sealing between the components forming the second accommodating space 40 is good, the second accommodating space 40 is no longer connected to the first mounting groove 14, and the sealing of the second accommodating space 40 is no longer affected by the sealing between the keycap 61 and the key groove 13. To achieve a higher sealing level for the second accommodating space 40, it's unnecessary to set the sealing level at the button assembly to the same height. The sealing structure at the button assembly can use a lower sealing level, such as removing the aforementioned sealing ring or replacing the original high-performance, high-cost sealing ring with a lower-cost, less effective one, thereby reducing the sealing cost at the button assembly. Furthermore, using the solution provided in this embodiment, ensuring good airtightness of the second accommodating space 40 only requires a single airtightness test; there's no need to test the airtightness between the keycap 61 and the key groove 13 in the button assembly 60. This simplifies the airtightness testing process for the second accommodating space 40 and improves testing efficiency. Therefore, the solution provided in this embodiment can reduce the sealing cost of the second accommodating space 40 to a certain extent.

[0121] In related technologies, because the second structural member 30 needs to be sealed to the portion of the frame 12 located outside the first mounting groove 14, the thickness of the frame 12 needs to be greater than or equal to the sum of the sealing width, the width of the opening of the first mounting groove, and the distance between the first mounting groove and the side of the frame near the middle plate (hereinafter referred to as the first distance) D1. At least a portion of the portion of the frame 12 with the first mounting groove 14 is the sidewall of the battery compartment, which will contact the battery 41. The battery 41 will expand due to temperature rise during use, therefore this portion of the frame 12 needs to withstand the expansion force exerted by the battery 41. The first distance D1 in this portion of the frame 12 needs to meet a certain width to ensure that this portion can withstand the aforementioned expansion force. However, using the electronic device provided in this application embodiment, the side of the frame 12 facing the second structural member 30 can be used as a sealing surface connected to the sealing layer 80, or most of it can be used as a sealing surface connected to the sealing layer 80. Thus, the three widths—the first distance D1 and the sealing width D2—can at least partially overlap. Figure 11 As shown, the slot opening of the first mounting groove 14 no longer affects the sealed connection between the second structural member 30 and the frame 12. The width of the slot opening of the first mounting groove 14 can also overlap with the sealing width D2. Thus, if there are no other structures in the frame 12 that need to occupy the portion beyond the sealing width, the minimum thickness of the frame 12 can be the sealing width. Compared with related technologies, this can reduce the thickness of the frame 12 to a certain extent, increase the bearing area of ​​the middle plate 11, and thus provide a larger area for the battery or circuit board assembly 50. The thickness of the frame 12 mentioned above refers to the dimension of the frame 12 in the Y direction.

[0122] Since the first structural component 20 is a display screen, the display screen is generally electrically connected to the circuit board assembly 50 via an electrical connection structure. The electrical connection structure includes a circuit board, wires, connectors, etc. The middle plate 11 generally has holes for the power supply connection structure to pass through. The electrical connection structure is generally located partly between the first structural component 20 and the frame 10, i.e., within the aforementioned first accommodating space, and partly passes through the holes in the middle plate 11 to connect with corresponding components on the circuit board assembly 50.

[0123] To reduce the adverse effects on the electrical connection structure caused by external impurities entering the space between the first structural member 20 and the frame 10 through the button slot 13 and the first mounting slot 14, such as... Figure 14As shown, in some embodiments, the area between the first structural member 20 and the frame 10, i.e., the aforementioned first accommodating space 42, can be divided into a first region a and a second region b. The second region b includes the area containing the electrical connection structure and the aforementioned holes. The first mounting groove 14 and the through hole 111 are both located within the first region a. The dotted line L3 in the figure is the boundary line between the first region a and the second region b. It should be understood that the dotted line L3 is an auxiliary line to facilitate understanding of the boundary between the first region a and the second region b, and is not a structural line on the middle plate 11. Furthermore, the boundary line between the first region a and the second region b can be set according to personal understanding, as long as the second region b can include the area containing the holes through which the electrical connection structure and the power supply connection structure pass.

[0124] Figure 15 This is a schematic diagram illustrating one possible arrangement of the second sealing structure in an electronic device according to an embodiment of this application. For example... Figure 14 and Figure 15 As shown, a second sealing structure 17 is provided between the first structural member 20 and the frame 10. The second sealing structure 17 is located within the first region a. This second sealing structure 17 is used to seal the connection between the first structural member 20 and the frame 10, and also to prevent impurities that enter the first region a via the first mounting groove 14 from entering the second region b.

[0125] It is understandable that if other areas of the middle plate also have through structures running through it along the thickness direction, such as holes or notches, and if these through structures are not sealed, then these structures are also located in the second area b. If the aforementioned through structures are sealed, then they can be located in the first area a.

[0126] The second sealing structure 17 can be adhesive backing, or it can include adhesive backing and other structures, such as cushioning pads, depending on the application requirements.

[0127] By adopting the solution provided in this embodiment, even if the sealing at the button assembly 60 is poor, impurities that enter the area between the first structural member 20 and the frame 10 through the button groove 13 and the first mounting groove 14 will not reach the second area b, and thus will not come into contact with the electrical connection structure located in the second area b. This can reduce the risk of damage to the electrical connection structure.

[0128] The second sealing structure 17 described above can be configured in various ways. For ease of understanding, examples are given below. Figure 16 A schematic diagram illustrating another configuration of the second sealing structure in an electronic device provided in an embodiment of this application; Figure 17 This is a schematic diagram illustrating another configuration of the second sealing structure in an electronic device provided in an embodiment of this application.

[0129] like Figure 15As shown, in some embodiments, the second sealing structure 17 is located inside the first mounting groove 14 and the through hole 111, that is, on the side of the first mounting groove 14 and the through hole 111 closer to the second region b. In this way, even if the button groove is not sealed tightly, impurities entering the internal cavity of the electronic device through the button groove and the first mounting groove 14 will be blocked by the second sealing structure 17 within the first region a, and will not enter the second region b to contact the first structural component and the electrical connection structure, thus not affecting the normal operation of the first structural component.

[0130] like Figure 16 As shown, in some embodiments, the portion of the first flexible portion 632 located within the receiving cavity (which is also the side exposed on the first surface of the frame 10) is referred to as the exposed portion 632a. The second sealing structure 17 includes a first sealing portion 171 and a second sealing portion 172. The first sealing portion 171 is disposed around the edge of the first structural member and covers the opening of the first mounting groove 14. The second sealing portion 172 is connected to the first sealing portion 171 and is disposed around the exposed portion 632a.

[0131] The first sealing part 171 connects the first structural component to the frame 10, while the second sealing part 172 confines impurities that enter between the first structural component 20 and the frame 10 via the first mounting groove 14 to the exposed portion 632a. Although the space between the first mounting groove 14 and the first structural component 20 and the frame 10 is connected, the first sealing part 171 seals the opening of the first mounting groove 14. Even if liquid or other impurities enter the space between the first structural component 20 and the frame 10 via the button groove 13 and the first mounting groove 14, they will only remain within the space formed by the second sealing part 172, the first structural component 20, and the frame 10, and will not spread to other areas. Furthermore, the back side of the first structural component 20 within the space formed by the second sealing part 172, the first structural component 20, and the frame 10 is typically a metal layer (such as copper or aluminum foil used for heat conduction, heat dissipation, and electromagnetic shielding), resulting in a stable structure that is less prone to malfunction even when in contact with impurities. This provides better waterproofing for the electronic device and minimizes the impact on the first structural component.

[0132] Based on the two embodiments above, the first sealing structure 16 can be disposed at the through hole 111, so that impurities entering the electronic device through the first mounting groove 14 will not enter the second receiving space 40 through the through hole 111. Furthermore, since the size of the through hole 111 is generally smaller than the size of the first mounting groove 14, placing the first sealing structure 16 at the through hole 111, compared to placing the first sealing structure 16 at the first mounting groove 14, can reduce the amount of material required for the first sealing structure 16 and facilitate its installation.

[0133] like Figure 17As shown, in some other embodiments, the second sealing part 172 can also cover the exposed portion 632a of the through hole 111 and the first flexible part 632. That is, the second sealing structure 17 covers the first mounting groove, the through hole 111, and the portion of the first flexible part located between them. In this way, even if liquid or other impurities enter the electronic device through the button groove 13 and the first mounting groove 14, they cannot enter the first accommodating space between the first structural member and the frame, nor can they enter the second accommodating space through the through hole 14. This can make the electronic device more waterproof and have less impact on the first structural member.

[0134] In this embodiment, the first sealing structure can still be located at the through hole 111, or it can be formed by the second sealing structure 17. Specifically, the second sealing structure 17 covers the first mounting groove 14 and the through hole 111, as well as the space between them. If the second sealing structure 17 can completely block the first connecting channel between the first mounting groove 14 and the through hole 111, that is, by only setting the second sealing structure 17, impurities entering the electronic device through the first mounting groove 14 cannot enter the second accommodating space 40 through the through hole 111. In this case, the part of the second sealing structure 17 that performs the above function (which is also the part of the second sealing structure 17 located in the above-mentioned first connecting channel) can serve as the above-mentioned first sealing structure, and there is no need to set up other first sealing structures. If the second sealing structure 17 cannot completely block the first connecting channel between the first mounting groove 14 and the through hole 111, that is, by only setting the second sealing structure 17, impurities entering the electronic device through the first mounting groove 14 cannot be completely prevented from entering the second accommodating space 40 through the through hole 111. In this case, other sealing structures still need to be set up on the first connecting channel between the first mounting groove 14 and the through hole 111 to cooperate with the second sealing structure 17 to achieve the above function. In this way, the second sealing structure 17 can only form a partial first sealing structure.

[0135] Regardless of the configuration, as long as the second sealing structure 17 can serve as at least a part of the first sealing structure, the difficulty of manufacturing the first sealing structure and the amount of material used can be reduced to some extent.

[0136] Of course, in other embodiments, the second sealing structure 17 can also be configured in other ways, depending on the specific needs of use.

[0137] To facilitate preparation and assembly, the second sealing part 172 can be integrally molded with the first sealing part 171, so that the two can be combined into a whole and can be attached to the first surface of the frame 10.

[0138] Figure 18 for Figure 15 A magnified schematic diagram of the structure at point C.

[0139] like Figure 18 As shown, in order to ensure that the assembly of the middle plate 11 and the button circuit board 63 is flat on the side facing the first structural member 20, or to reduce the adverse effects on the installation of the first structural member 20 caused by the first flexible part 632 being wrapped around the first side of the middle plate 11, in some embodiments, a connecting groove 112 is provided on the first side of the frame 10, connecting the first mounting groove 14 and the through hole 111. The connecting groove 112 is used to accommodate the portion of the first flexible part 632 that is in contact with the first side of the middle plate 11 (i.e., the exposed portion 632a). The depth of the connecting groove 112 can be determined according to the usage requirements. When the depth of the connecting groove 112 is greater than or equal to the thickness of the exposed portion 632a, the exposed portion 632a can be located within the connecting groove 112 without protruding from the connecting groove 112. This allows the assembly of the middle plate 11 and the button circuit board to be flat on the side facing the first structural member, or the area with the exposed portion 632a can form a recessed structure, but in any case, it will not affect the installation of the first structural member. When the depth of the connecting groove 112 is less than the thickness of the exposed portion 632a, although a part of the exposed portion 32a will protrude from the first surface of the middle plate 11, this is acceptable as long as it does not affect the installation of the first structural member. Therefore, the connecting groove 112 can reduce the adverse effects on the installation of the first structural member 20 caused by the first flexible part 632 winding around the first side of the middle plate 11.

[0140] To facilitate the bending of the first flexible part 632, guide surfaces are provided at the connection points of the connecting groove 112 and the first mounting groove 14, and at the connection points of the connecting groove 112 and the through hole 111. These guide surfaces guide the bending of the first flexible part 632. The guide surfaces can be inclined, curved, or other shapes depending on the application. The shapes of the two guide surfaces can be the same or different, depending on the specific application requirements. Figure 19 As shown, Figure 19 This is a partial cross-sectional view of the assembly structure of the frame and button circuit board in an electronic device provided in an embodiment of this application. The guide surface (denoted as the first guide surface 113) between the bottom of the connecting groove 112 and the inner wall of the first mounting groove 14 is an inclined surface, and the guide surface (denoted as the second guide surface 114) between the bottom of the connecting groove 112 and the inner wall of the through hole 111 is an arc surface.

[0141] To facilitate manufacturing and assembly, the aforementioned button circuit board 63 is generally an integrated structure. However, when the button circuit board 63 malfunctions, the first structural component 20 needs to be removed to repair or replace the button circuit board 63, which makes repairing the button circuit board 63 more difficult and costly.

[0142] To improve this problem, such as Figures 20 to 24 As shown, Figure 20This is a cross-sectional view of a partial structure of an electronic device provided in another embodiment of this application. Figure 21 for Figure 20 The diagram shows a partial cross-sectional view of the electronic device after the repair circuit board has been installed. Figure 22 for Figure 20 The diagram shows the positional structure of the first and second mounting slots in the electronic device. Figure 23 for Figure 22 A magnified schematic diagram of the structure at point E in the middle. Figure 24 for Figure 21 The schematic diagram of the keycap and maintenance circuit board mounting structure of the electronic device shown illustrates that, in some embodiments, the first mounting groove 14 and the key groove 13 are connected to form a combined groove. A second mounting groove 15 is also provided on the frame 12. The second mounting groove 15 is located on the side of the first mounting groove 14 away from the middle plate 11 and is connected to the combined groove. The opening of the second mounting groove 15 faces the side where the second structural member 30 is located. A second connecting channel is provided between the opening of the second mounting groove 14 and the second receiving space 40. The second connecting channel can be a groove opened on the second surface of the frame, a gap between the frame and the second structural member, or both a groove and a gap.

[0143] In addition to the button assembly, the electronic device also includes a repair button assembly 90. The repair button assembly 90 is used in case the button circuit board 63 malfunctions. Specifically, when the button circuit board 63 is working normally, the repair button assembly 90 is not installed; after the button circuit board 63 malfunctions, part of the button assembly is removed and then the repair button assembly 90 is installed.

[0144] The maintenance key assembly 90 includes a maintenance keycap 91, a maintenance switch 92, and a maintenance circuit board 93. At least a portion of the maintenance keycap 91 is located within the key slot 13. The maintenance switch 92 is located on the maintenance circuit board 93 and within the second mounting slot 15 and / or the key slot 13. Being located within the second mounting slot 15 and / or the key slot 13 includes the following scenarios: first, the entire maintenance switch 92 is located within the second mounting slot 15; second, the entire maintenance switch 92 is located within the key slot 13; third, a portion of the maintenance switch 92 is located within the second mounting slot 15, and another portion is located within the key slot 13.

[0145] The maintenance keycap 91 is electrically connected to the maintenance circuit board 93 via a maintenance switch 92. The maintenance switch 92 can have the same structure as the aforementioned switch. The maintenance keycap 91 can also have the same structure as the aforementioned keycap, including a cap body 911, a lug 912, and a trigger portion 913 located on the cap body 911; however, the length of the trigger portion 913 of the maintenance keycap 91 is shorter than the length of the trigger portion of the keycap in the key assembly. The maintenance circuit board 93 includes a second main body 931 connected to the trigger element, and a second flexible portion 932 electrically connected to the second main body 931. The maintenance switch 92 is located on the second main body 931. The second flexible portion 932 is bendable. The second main body 931 is positioned in the second mounting slot 15 in case of a malfunction in the key circuit board 63, and the second flexible portion 932 is bent from the back side of the frame 12 to the middle plate 11 and electrically connected to the circuit board assembly 50.

[0146] Both the second mounting slot 15 and the maintenance button assembly are used for maintenance when the button circuit board 63 malfunctions. When the button circuit board 63 is not malfunctioning, the maintenance button assembly is not installed, and the second mounting slot 15 can be left empty, shielded by the second structural member 30, such as... Figure 20 As shown. When the button circuit board 63 malfunctions, the second structural member 30 and the button assembly 60 can be removed, and a maintenance circuit board 93 can be installed in the second mounting slot 15. This maintenance circuit board 93 can be a button circuit board from the related art, and it is installed according to the button circuit board from the related art. That is, the second main body 931 of the maintenance circuit board 93 is located in the second mounting slot 15, and the second flexible part 932 bypasses the side of the frame 12 facing the second structural member 30 and the inner wall of the frame 12 to the second side of the middle plate 11, as shown. Figure 21 As shown. The keycap 61 is replaced with a maintenance keycap 91, so that the trigger portion on the maintenance keycap 91 contacts the maintenance switch 92 on the maintenance circuit board 93, as shown. Figures 22 to 24 As shown. The aforementioned repair keycap 91 can be obtained by selecting an existing keycap with a shorter trigger length, or by replacing the trigger 613 in the original keycap 61 with a shorter trigger 613, that is, by replacing some parts of the original keycap 61.

[0147] In addition, since the electronic device provided in this application can have poor sealing at the key slot, the keycap 61 can be without a sealing ring. After the maintenance circuit board 93 is installed, the sealing between the second structural component 30 and the frame 12 is damaged. In order to improve the sealing of the electronic device, the maintenance keycap 91 can be a keycap in the related technology, that is, a sealing ring is set, and a sealing ring with better sealing performance and higher cost is used. This can make the waterproof performance of the electronic device after maintenance comparable to that of the electronic device in the related technology.

[0148] Understandably, before or during the above operations, the connection between the damaged button circuit board 63 and the circuit board assembly 50 must be disconnected from and removed from the first main body 631. For example... Figure 25 As shown, Figure 25 for Figure 21 The enlarged structural diagram at point D shows that when removing the connection between the button circuit board 63 and the circuit board assembly 50, this part can be cut or severed from the main body of the first flexible part at the dashed box K in the diagram, and then removed. In this way, after the repair circuit board 93 is installed, only the repair circuit board 93 is electrically connected to the circuit board assembly in the button assembly; the original button circuit board 63 is no longer electrically connected to the circuit board assembly.

[0149] In this embodiment, the first mounting slot 14 and the second mounting slot 15 can be arranged in parallel or at an angle, depending on the usage requirements. Using the electronic device provided in this embodiment allows for troubleshooting of the button circuit board 63 without removing the first structural component 20, thus reducing repair difficulty and costs to some extent.

[0150] It should be noted that when the button circuit board is undamaged, i.e., when the repair circuit board is not installed, the connection surface between the second structural component and the frame is located on the side of the second mounting groove closer to the second receiving space. After the repair circuit board is installed, the connection surface between the second structural component and the frame can be located on the side of the second mounting groove away from the second receiving space, or partly on the side of the second mounting groove away from the second receiving space and partly on the side of the second mounting groove closer to the second receiving space, depending on the sealing requirements. Repaired electronic devices generally do not have waterproof requirements; therefore, although the repair circuit board uses the button circuit board installation method in related technologies, it does not affect the waterproof rating of the electronic device at the time of manufacture. Furthermore, since the frame has a first mounting groove and a second mounting groove in the solution provided in this embodiment, the thickness of the frame is increased compared to when only the first mounting groove is provided. Therefore, if the battery width is to be increased compared to related technologies, the sum of the width of the second mounting groove opening and the width of the portion of the frame located on the side of the second mounting groove away from the first mounting groove must be less than the sum of the width of the first mounting groove opening and the first spacing.

[0151] Based on the above embodiments, a waterproof structure can be provided outside the button circuit board 63 and the switch 62. Thus, when the first sealing structure 16 and the second sealing structure 17 have good waterproof performance, even if the seal at the button slot 13 is not perfect, the waterproof rating of the electronic device can still be high, such as meeting the IP (ingress protection) X8 waterproof rating requirement. IPX8 waterproof rating means the highest level of waterproofing, where the device can withstand a depth of 1.5 meters to 30 meters from the water surface for 30 minutes without performance degradation or leakage. IPX is an internationally certified waterproof rating; the last digit represents the waterproof performance, and there are eight levels in total, with IPX8 being the highest.

[0152] With the development of the consumer electronics industry, advanced waterproofing of electronic devices is becoming increasingly common. However, the high cost of professional waterproofing for electronic devices is a major reason why low-end devices cannot currently utilize it. Among waterproofing costs, the cost of waterproofing button components is significantly higher than that of ordinary projects, and it imposes greater restrictions on the design of the frame, requiring specific waterproofing width, triggering parts, sealing ring design, and stroke. In overall device airtightness testing, the airtightness of the button components is also a key testing item, requiring testing of structural components, the bare device, and the entire device. However, the solution provided in this embodiment eliminates the need for complex sealing schemes at the button components; simple waterproofing is sufficient to achieve professional-grade waterproofing for the entire electronic device at a lower cost. The cost of waterproofing the button components is also lower, and airtightness testing related to the button components can be omitted. The solution provided in this embodiment can be used for button components in various products such as mobile phones, e-readers, and tablets.

[0153] Finally, it should be noted that the above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An electronic device, characterized in that, include: A frame having a first side and a second side facing away from each other, the frame including a middle plate and a frame surrounding the middle plate, the frame having a first mounting groove and a button groove communicating with the first mounting groove, and the middle plate having a through hole penetrating the first side and the second side; A first structural member is opposite at least a portion of the first surface, and a first receiving space is formed between the first structural member and the frame. The second structural member is at least partially opposite to the second surface, and the second structural member forms a second receiving space with the frame; The circuit board assembly is located within the second accommodating space; A button assembly, the button assembly including a keycap and a button circuit board, at least a portion of the keycap being located within the button slot, the button circuit board including a first main body and a first flexible part, the first main body being located within a first mounting slot and electrically connected to the keycap, the first flexible part being electrically connected to the first main body; The through hole and at least part of the first accommodating space are connected to form a first connecting channel; the opening of the first mounting groove faces the first structural member, the opening of the first mounting groove is connected to the second accommodating space through the first connecting channel, the first flexible part is electrically connected to the circuit board assembly through the first connecting channel, the first flexible part passes through the through hole, and a first sealing structure is provided in the first connecting channel to prevent impurities from entering the second accommodating space.

2. The electronic device according to claim 1, characterized in that, The electronic device also includes: An electrical connection structure is at least partially located within the first receiving space and electrically connected to the first structural member, and the electrical connection structure is also electrically connected to the circuit board assembly; The first accommodating space includes a first region and a second region, the second region including the region where the electrical connection structure is located, the first mounting groove and the through hole are both located in the first region; a second sealing structure is provided between the first structural member and the frame, the second sealing structure being located in the first region.

3. The electronic device according to claim 2, characterized in that, The second sealing structure is located on the side of the first mounting groove and the through hole near the second region.

4. The electronic device according to claim 2, characterized in that, The portion of the first flexible part located within the accommodating cavity is referred to as the exposed portion; the second sealing structure includes a first sealing portion and a second sealing portion; the first sealing portion is disposed around the edge of the first structural member, and the first sealing portion covers the opening of the first mounting groove. The second sealing part is connected to the first sealing part and is disposed around the exposed portion.

5. The electronic device according to claim 2, characterized in that, The second sealing structure covers the first mounting groove and the through hole.

6. The electronic device according to claim 5, characterized in that, The portion of the second sealing structure located within the first communicating channel forms at least a portion of the first sealing structure.

7. The electronic device according to any one of claims 2-6, characterized in that, The first sealing structure is located at the through hole.

8. The electronic device according to any one of claims 1-7, characterized in that, The first mounting slot and the button slot are connected to form a combined slot; The frame is also provided with a second mounting groove, which is located on the side of the first mounting groove away from the middle plate and communicates with the combined groove; the opening of the second mounting groove faces the second structural member, and a second communicating channel is provided between the opening of the second mounting groove and the second accommodating space; The electronic device further includes a repair button assembly for use in case of a malfunction of the button circuit board; the repair button assembly includes a repair keycap and a repair circuit board; at least a portion of the repair keycap is located within the key slot; the repair circuit board includes a second main body and a second flexible part electrically connected to the second main body; the second main body is located in the second mounting slot and is electrically connected to the repair keycap; the second flexible part is electrically connected to the circuit board assembly through the second communicating channel.

9. The electronic device according to any one of claims 1-8, characterized in that, The portion of the first flexible part located within the accommodating cavity is referred to as the exposed portion; the first mounting groove and the through hole are spaced apart, and the first surface of the middle plate is provided with a connecting groove connecting the first mounting groove and the through hole, and at least a portion of the exposed portion is located within the connecting groove.

10. The electronic device according to claim 9, characterized in that, A first guide surface is provided between the connecting groove and the first mounting groove, and a second guide surface is provided between the connecting groove and the through hole. Both the first guide surface and the second guide surface are used to guide the bending of the first flexible part.

11. The electronic device according to any one of claims 1-10, characterized in that, The first structural component includes a display screen, and the second structural component includes a back cover and / or a display screen.

12. The electronic device according to any one of claims 1-11, characterized in that, The first flexible part is connected to the circuit board assembly via a spring.

13. The electronic device according to any one of claims 1-12, characterized in that, The button circuit board has a waterproof structure.

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