WO2025035751A1 - 中框及电子设备 - Google Patents

中框及电子设备 Download PDF

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Publication number
WO2025035751A1
WO2025035751A1 PCT/CN2024/081152 CN2024081152W WO2025035751A1 WO 2025035751 A1 WO2025035751 A1 WO 2025035751A1 CN 2024081152 W CN2024081152 W CN 2024081152W WO 2025035751 A1 WO2025035751 A1 WO 2025035751A1
Authority
WO
WIPO (PCT)
Prior art keywords
middle frame
opening
metal
mounting opening
frame body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2024/081152
Other languages
English (en)
French (fr)
Other versions
WO2025035751A9 (zh
Inventor
王晨语
赵哲
姚文星
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honor Device Co Ltd
Original Assignee
Honor Device Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Honor Device Co Ltd filed Critical Honor Device Co Ltd
Priority to CN202480029358.9A priority Critical patent/CN121176159A/zh
Priority to EP24853167.5A priority patent/EP4716388A1/en
Publication of WO2025035751A1 publication Critical patent/WO2025035751A1/zh
Publication of WO2025035751A9 publication Critical patent/WO2025035751A9/zh
Priority to US19/414,744 priority patent/US20260101453A1/en
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0217—Mechanical details of casings
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/18—Construction of rack or frame
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0217—Mechanical details of casings
    • H05K5/0226—Hinges
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/04—Metal casings

Definitions

  • the present application relates to the field of electronic devices, and in particular to a middle frame and electronic devices.
  • the middle frame is the main supporting structure in electronic devices.
  • the middle frames of some electronic devices are made of light metals such as magnesium alloys to reduce the weight of the electronic device as a whole.
  • Some buttons in electronic devices are made of metal, and these buttons are assembled on the middle frame made of magnesium alloy.
  • galvanic corrosion is prone to occur at the position where the middle frame matches the buttons, which will affect the normal use of the buttons and the electronic device.
  • the present application provides a middle frame and an electronic device, which can reduce the risk of galvanic corrosion of the middle frame.
  • a first aspect of an embodiment of the present application provides a middle frame, which is applied to an electronic device.
  • the middle frame includes: a middle frame body and a barrier.
  • the middle frame body is made of metal material.
  • the middle frame body has an installation opening connected to the outside.
  • the installation opening is used to install metal functional parts of the electronic device, and the inner wall of the installation opening faces the metal functional parts.
  • the barrier is arranged on at least a portion of the inner wall of the installation opening to isolate the middle frame body from the metal functional parts.
  • the embodiment of the present application is provided with a middle frame body in the middle frame. Since the middle frame body has an installation opening, the metal functional parts of the electronic device can be installed on the middle frame body through the installation opening to realize the function of the metal functional parts. On this basis, since the middle frame body in the middle frame is made of metal material, the middle frame body and the metal functional parts can be isolated by the provision of a barrier in the middle frame to avoid direct contact between the middle frame body and the metal functional parts, thereby reducing the risk of galvanic corrosion at the matching point between the middle frame body and the metal functional parts, so that the risk of galvanic corrosion at the middle frame of the embodiment of the present application is low, so as to ensure the normal use of the metal functional parts on the electronic device.
  • the metal button is a metal functional part in the electronic device, when the metal button is assembled at the installation opening of the middle frame body, the galvanic corrosion at the matching point between the middle frame body and the metal button can be reduced, so as to ensure the normal use of the metal button, and at the same time, the display screen of the electronic device can be prevented from displaying and function failure caused by galvanic corrosion of the middle frame body.
  • the molding material of the middle frame body includes light metal, so that the relatively low density of light metal can be used to manufacture a lighter middle frame body to achieve weight reduction of the middle frame.
  • the light metal includes a magnesium alloy.
  • the barrier By setting the barrier, the risk of galvanic corrosion occurring at the joints between the middle frame body made of magnesium alloy and metal functional parts such as metal buttons can be reduced, thereby reducing the risk of galvanic corrosion occurring in the existing middle frame made of magnesium alloy.
  • the barrier covers the inner wall of the mounting opening at the first end along the circumference of the mounting opening and extends axially toward the second end of the mounting opening, wherein the first end is an end of the circumferential side wall of the mounting opening adjacent to the middle frame body.
  • This not only enables the barrier to better block the middle frame body and the metal functional parts in the circumferential direction of the installation opening, but also helps to increase the blocking length of the barrier to the metal buttons by limiting the extension direction of the barrier, so as to further reduce the risk of galvanic corrosion at the installation opening of the middle frame body.
  • the extended end of the barrier is flush with the edge of the second end of the installation opening so that the barrier can block all the fitting locations of the metal functional parts and the middle frame body, thereby preventing galvanic corrosion from occurring at the fitting locations of the middle frame body and the metal buttons.
  • the barrier is a plastic part, which is integrally formed with the middle frame body to enhance the connection strength between the barrier and the middle frame body, while allowing the barrier to be better disposed on the inner wall of the mounting opening, thereby further reducing the weight of the middle frame.
  • the barrier is also wrapped around the peripheral edge of the middle frame body and extends along the surface of the middle frame body toward the inside of the installation opening, so that the barrier can be set on at least a portion of the inner wall of the installation opening, and an integrated middle frame wrapped by the barrier can be formed on the peripheral side of the middle frame body.
  • the thickness of the barrier inside the installation opening is smaller than the thickness of the barrier at the peripheral edge of the installation opening, so that the barrier can be injection molded on at least a portion of the inner wall of the installation opening while ensuring the structural strength of the middle frame body at the installation opening.
  • the barrier member forms an assembly opening at the installation opening that is compatible with the outer edge shape of the metal functional part, and the assembly opening is constructed to assemble at least a partial structure of the metal functional part so that while the metal functional part is assembled on the middle frame through the assembly opening, the barrier member can block between the metal functional part and the middle frame body.
  • the metal functional parts are one or more of metal buttons and card trays, so that when either the metal button or the card tray is assembled on the middle frame, the metal button and the card tray can be used normally when the electronic device is in humid environments such as salt spray and seaside.
  • the mounting opening includes a first mounting opening on a circumferential side wall of the middle frame body, and the blocking member is disposed on at least a portion of an inner wall of the first mounting opening;
  • the assembly opening comprises a first assembly opening, which is located in the first installation opening and is used for assembling a part of the metal keycap in the metal key.
  • the axial direction of the first mounting opening is the same as the moving direction of the metal keycap in the first mounting opening, so as to facilitate the movement of the metal keycap in the first mounting opening;
  • the size of the first assembly port is greater than or equal to the sum of the size of the metal keycap in the first assembly port and the moving stroke, so as to ensure that when the metal keycap moves in the first assembly port, the blocking member can be blocked between the metal keycap and the middle frame body.
  • annular groove is formed on the inner wall of the first installation opening, and a partial structure of the blocking member is embedded in the annular groove to surround the first assembly opening.
  • the thickness and strength of the middle frame body at the first installation opening can be It is possible to ensure that the metal button is smoothly assembled and pressed in the first assembly opening.
  • the barrier is flush with the inner wall of the first mounting opening, and the annular groove extends on the inner wall of the first mounting opening toward one side of the geometric center of the middle frame body, so as to ensure the smooth assembly and pressing of the metal button in the first assembly opening, while also facilitating increasing the blocking length of the barrier to the metal button.
  • the barrier is coated on the inner wall of the first installation opening to form a first assembly opening, and the inner wall of the first assembly opening is provided with a dirt storage groove;
  • the first assembly opening is used to limit the movement stroke of the metal key cap.
  • the blocking member can completely block the inner wall of the first installation opening to completely block the metal keycap from the middle frame body.
  • dust brought into the first assembly opening can be collected.
  • the mounting opening further includes a second mounting opening, and the second mounting opening is located on the bottom wall of the first mounting opening;
  • the first mounting port is connected to the cavity in the middle frame body where the key circuit board is installed through the second mounting port.
  • the second mounting port is constructed to assemble a partial trigger component in the metal key, so that when the metal keycap is pressed, it can drive the trigger component to move toward one side in the cavity in the second mounting port and compress the conductive component to make the conductive component conductive with the key circuit board, thereby realizing the function of the metal key.
  • the diameter of the second mounting opening is smaller than that of the first mounting opening, and the axial direction of the second mounting opening is parallel to the axial direction of the first mounting opening. In this way, while realizing the function of the metal button, the opening area of the mounting opening on the middle frame body can also be reduced.
  • the assembly port is configured to assemble a fingerprint key in a metal key, so that the fingerprint key can be assembled on the middle frame body while reducing the risk of galvanic corrosion at the joint between the middle frame body and the fingerprint key.
  • the middle frame further includes a protective layer, which is located on the side of the barrier member facing the second installation opening and covers a portion of the inner wall of the installation opening, and the protective layer is constructed to enclose an assembly hole for assembling the trigger member.
  • the matching portion between the middle frame body and the trigger component can be protected, so as to further reduce the risk of galvanic corrosion between the middle frame body and the trigger component at the installation opening.
  • the protective layer includes a passivation layer or an insulating varnish layer to form the protective layer.
  • the assembly port is constructed to assemble a volume key among metal buttons, so as to achieve the assembly of the volume key on the middle frame body while reducing the risk of galvanic corrosion at the mating point between the middle frame body and the volume key.
  • the blocking member extends along the inner wall of the first installation opening to the edge of the second installation opening;
  • the assembly opening also includes a second assembly opening, which is located in the second installation opening and is used to assemble the trigger member.
  • the volume button when the volume button is assembled in the assembly opening, the volume button can be completely blocked from the middle frame body by the barrier, so as to reduce the risk of galvanic corrosion between the middle frame body and the metal keycap and the metal keycap.
  • the axial direction of the second assembly opening is the same as the moving direction of the trigger member in the second assembly opening, so that the trigger member moves in the first assembly opening;
  • the size of the second assembly opening is greater than or equal to the sum of the size of the trigger member in the second assembly opening and the moving stroke, so as to ensure that when the trigger member moves in the second assembly opening, the blocking member can block between the trigger member and the middle frame body.
  • the thickness of the barrier member in the installation opening is greater than or equal to 0.25 mm to ensure that the plastic
  • the rubber particles can be fully injected onto the inner wall of the mounting opening during the injection molding process, which can not only ensure that the barrier has sufficient thickness, but also avoid the omitted injection molding area on the inner wall of the mounting opening due to the barrier being too thin;
  • the thickness of the middle frame body at the mounting opening is greater than or equal to 0.4 mm to ensure that the middle frame body has sufficient structural strength at the mounting opening.
  • the middle frame body includes a middle plate and a frame, the frame is arranged around the peripheral edge of the middle plate, and the installation opening is located on the circumferential surface of the frame away from the middle plate, so that the metal functional parts can be installed on the middle frame body through the installation opening to realize the function of the metal functional parts.
  • a second aspect of an embodiment of the present application provides an electronic device, which includes a metal functional part and a middle frame as described above, wherein at least part of the structure of the metal functional part is located in the mounting opening of the middle frame, so as to realize the assembly of the metal functional part in the middle frame while ensuring the normal use of the metal functional part and the display screen of the electronic device when the electronic device is in a humid environment such as salt spray or seaside.
  • FIG1 is a schematic structural diagram of an electronic device provided by an embodiment of the present application in an intermediate state between a folded state and a flattened state;
  • FIG2 is a schematic diagram of the structure of the electronic device in FIG1 in a folded state
  • FIG3 is a schematic diagram of the structure of the electronic device in FIG1 in an unfolded state
  • FIG4 is a schematic diagram of a disassembled structure of the electronic device in FIG1 ;
  • FIG5 is a partial cross-sectional schematic diagram of a fingerprint key provided in the related art assembled in an electronic device
  • FIG6 is a partial cross-sectional schematic diagram of a volume key provided in the related art assembled in an electronic device
  • FIG7 is a schematic diagram of a partial structure of a metal button and a middle frame according to an embodiment of the present application.
  • FIG8 is a schematic diagram of a partial structure of a metal button assembled on a middle frame according to an embodiment of the present application.
  • FIG9 is a partial cross-sectional schematic diagram of the metal button in FIG8 ;
  • FIG10 is a partial cross-sectional schematic diagram of FIG9 with the metal button omitted;
  • FIG11 is a schematic diagram of the structure of a middle frame provided in an embodiment of the present application.
  • FIG12 is a schematic diagram of the structure of a metal button and the middle frame in FIG11 provided in an embodiment of the present application;
  • FIG13 is a partial cross-sectional schematic diagram of the middle frame in FIG11 along the A-A direction;
  • FIG14 is a schematic diagram of a partial structure of the metal button in FIG12 assembled on the middle frame
  • FIG15 is a partial cross-sectional schematic diagram of the middle frame in FIG11 along the B-B direction;
  • FIG16 is a second partial structural diagram of the metal button in FIG12 being assembled in the middle frame
  • FIG. 17 is a partial schematic diagram of the metal button in FIG. 12 assembled in the middle frame in FIG. 11 .
  • Light metals refer to metals with a relative density of less than 5. Light metals are divided into two categories: non-ferrous light metals and rare light metals. Non-ferrous light metals include aluminum, magnesium, calcium, titanium, potassium, strontium, barium, etc. Aluminum, magnesium, titanium and their alloys have a relatively low relative density and high strength, and can be widely used in the manufacture of electronic equipment and other fields.
  • Heavy metals refer to metals with a relative density of more than 5.
  • heavy metals may include, but are not limited to, copper, lead, zinc, tin, nickel, cobalt, antimony, mercury, cadmium, and bismuth.
  • Galvanic corrosion also known as contact corrosion, refers to the electrochemical corrosion caused by two different metals in contact with each other and in an electrolyte at the same time. Since they form a spontaneous battery, the more active metal and the anode metal are corroded.
  • An embodiment of the present application provides an electronic device, which may include but is not limited to a mobile phone, a tablet computer (i.e., a pad), a laptop computer, an ultra-mobile personal computer (UMPC), a handheld computer, a telephone watch, a walkie-talkie, a handheld terminal, and other electronic devices with a middle frame.
  • a mobile phone a tablet computer (i.e., a pad)
  • a laptop computer i.e., a laptop computer
  • UMPC ultra-mobile personal computer
  • handheld computer a telephone watch
  • walkie-talkie a walkie-talkie
  • handheld terminal i.e., a walkie-talkie
  • the structure of the electronic device of the present application is further described below by taking a mobile phone as an example.
  • Figures 1 to 3 illustrate different configurations of electronic devices to which the present application is applicable.
  • the electronic device is a foldable electronic device.
  • Figure 1 illustrates the configuration of the electronic device in an intermediate state between the folded state and the flattened state
  • Figure 2 illustrates the configuration of the electronic device in the folded state
  • Figure 3 illustrates the configuration of the electronic device in the flattened state.
  • the electronic device 100 includes a hinge mechanism 4 and two middle frames 1, which are rotatably connected via the hinge mechanism 4.
  • the two middle frames 1 are respectively a first middle frame 11 and a second middle frame 12.
  • the first middle frame 11 and the second middle frame 12 are respectively connected to opposite sides of the hinge mechanism 4, so that the first middle frame 11 and the second middle frame 12 can rotate relative to each other around the hinge mechanism 4, thereby realizing the flattening and folding of the electronic device 100.
  • the first middle frame 11 and the second middle frame 12 can move toward each other along the direction indicated by the arrow in Figure 1 to reach the folded state shown in Figure 2. As shown in Figure 2, when the electronic device 100 is in the folded state, the first middle frame 11 and the second middle frame 12 are stacked on each other.
  • the first middle frame 11 and the second middle frame 12 can move in opposite directions as indicated by arrows in Fig. 1 to reach the flattened state shown in Fig. 3. As shown in Fig. 3, when the electronic device 100 is in the flattened state, the first middle frame 11 and the second middle frame 12 are in the same plane.
  • FIG. 4 schematically shows a disassembled structure of the electronic device 100 in FIG. 3 .
  • the middle frame 1 includes a middle plate 101 and a frame 102 connected to each other.
  • the frame 102 is arranged around the peripheral edge of the middle plate 101 and together with the middle plate 101, constitutes the middle frame 1.
  • the frame 102 is a square ring-shaped frame structure surrounded by a plurality of side frames. The portion of the frame 102 exposed on the outer surface of the electronic device 100 can form the appearance surface of the middle frame 1.
  • the electronic device 100 further includes a back cover 2, which can be covered on the first middle frame 11 to form a receiving cavity with the covered middle frame 1.
  • the electronic device 100 may include two back covers 2, which are respectively covered on the first middle frame 11 and the second middle frame 12. The above two situations are not particularly limited in this application.
  • the structure of the electronic device 100 is further described below by taking the example that the rear cover 2 is covered on the first middle frame 11 .
  • the electronic device 100 may further include a display screen 3, and the display screen 3 may include a first display screen 31, and the first display screen 31 may be a flexible display screen.
  • the first display screen 31 may be simultaneously covered on the same side of the first middle frame 11 and the second middle frame 12, and distributed on the opposite sides of the first middle frame 11 with the back cover 2.
  • the first display screen 31 is also in a folded state.
  • the first display screen 31 is also in a flattened state. In this way, the electronic device 100 can change the configuration by the relative rotation of the first middle frame 11 and the second middle frame 12, realize the conversion between the folded state and the flattened state, and can simultaneously meet the large display area of the electronic device 100 and the convenient carrying of the user.
  • the display screen 3 may further include a second display screen 32, and the second display screen 32 may be a rigid display screen.
  • the second display screen 32 may be covered on a side of the second middle frame 12 opposite to the first display screen 31.
  • the first display screen 31 and the second display screen 32 are both electrically connected to the circuit board inside the electronic device 100, and may be used to display various information, and may also receive information input by the user.
  • the electronic device 100 may further include a middle frame 1, and the back cover 2 and the display screen 3 may be arranged on opposite sides of the middle frame 1 to form a non-foldable electronic device.
  • the display screen 3 may only include a rigid display screen.
  • the structure of the electronic device 100 is further described below by taking a foldable electronic device as an example.
  • the electronic device 100 may also have a metal functional part 5.
  • the metal functional part 5 includes a card tray 5a.
  • a card slot (not shown) connected to the inside of the electronic device 100 may be provided on the exterior surface of the first middle frame 11, and the card tray 5a can be detachably assembled in the card slot.
  • the card tray 5a can also be assembled on the exterior surface of the second middle frame 12.
  • the card tray 5a is used to place a subscriber identity module (SIM) card tray 5a held by the user to realize the communication function of the electronic device 100.
  • SIM subscriber identity module
  • the metal functional part 5 also includes a key.
  • the key is usually made of metal such as stainless steel.
  • Such keys are collectively referred to as metal keys 5b hereinafter.
  • the metal keys 5b include a volume key 54, a fingerprint key 53 or a power key (not shown).
  • the volume key 54 is used to adjust the volume of the electronic device 100.
  • the volume key 54 may be an integrated key having both volume increase and volume decrease functions.
  • the electronic device 100 may include two separate volume keys 54, one of which is used to increase the volume, and the other is used to decrease the volume. The present application does not specifically limit the number of volume keys.
  • the fingerprint key 53 is used to identify the user's fingerprint to help realize functions such as unlocking the display screen 3 of the electronic device 100, quick payment, and encryption.
  • the power key is used to control the power on and off of the electronic device 100.
  • the fingerprint key 53 and the power key can be two independent keys, or they can be integrated into a single key (as shown in Figures 4 and 6) to simplify the structure of the electronic device 100 while realizing multiple functions.
  • the structure of the electronic device 100 is further described below by taking the fingerprint key 53 and the integrated volume key 54 as examples.
  • the fingerprint key 53 can be embedded in the exterior surface of the middle right frame of the first middle frame 11.
  • the volume key 54 can be embedded in the exterior surface of the middle left frame of the second middle frame 12, and staggered with the fingerprint key 53 in the Y direction, so that when the electronic device 100 is in the folded state, the volume key 54 and the fingerprint key 53 can be staggered on the same side of the electronic device 100 to ensure the normal use of the two metal keys 5b.
  • the fingerprint key 53 and the volume key 54 can both be embedded in the middle right frame of the first middle frame 11.
  • Fig. 5 schematically shows a partial cross-sectional view of a fingerprint key 53 in the related art assembled in an electronic device 100a.
  • the cross-sectional position of the figure on the electronic device 100a can be seen in the aa direction shown in Fig. 3.
  • the middle frame 1a is provided with a key slot 13 corresponding to the fingerprint key 53, and the bottom of the key slot 13 has a through hole 14 connected to the inside of the electronic device 100a.
  • the fingerprint key 53 includes a key cap 51 and a trigger member 52 connected to each other.
  • the key cap 51 can be embedded in the key slot 13.
  • the trigger member 52 is located on the side of the key cap 51 facing the through hole 14 and is installed in the through hole 14 to realize the assembly of the fingerprint key 53 on the electronic device 100a.
  • the electronic device 100a has a key circuit board 6 and a conductive member 7 at the corresponding fingerprint key 53.
  • the key circuit board 6 is a flexible circuit board electrically connected to the circuit board of the electronic device 100a.
  • the conductive member 7 may include but is not limited to a key shrapnel, which may also be called a pot piece.
  • the conductive member 7 is arranged on the side of the key circuit board 6 facing the fingerprint key 53.
  • the conductive member 7 will be triggered, and the conductive member 7 will be forced to undergo elastic deformation toward one side of the key circuit board 6, so that the conductive member 7 is in contact with the key circuit board 6 and is conductive, thereby realizing the function of the fingerprint key 53.
  • Fig. 6 schematically shows a partial cross-sectional view of a volume key 54 in the related art assembled in an electronic device 100a.
  • the cross-sectional position of the figure on the electronic device 100a can be seen in the b-b direction shown in Fig. 2.
  • the volume key 54 also includes a key cap 51 and a trigger 52.
  • the assembly of the volume key 54 in the middle frame 1a and the key operation principle can refer to the above description of the fingerprint key 53.
  • the difference from the fingerprint key 53 is that the spacing between the trigger 52 of the volume key 54 and the hole wall of the through hole 14 is usually smaller than the spacing between the trigger 52 of the fingerprint key 53 and the hole wall of the through hole 14, so that the thickness of the middle frame 1a at the through hole 14 corresponding to the fingerprint key 53 is thinner.
  • the specific gravity of magnesium alloy is 68% of aluminum alloy, 27% of zinc alloy, and 23% of steel, the mass of magnesium alloy and aluminum alloy is relatively small, especially magnesium alloy.
  • light metals such as magnesium alloy and aluminum alloy are used in the relevant technology to make the metal middle frame 16.
  • the plastic 17 is wrapped around the peripheral edge of the metal middle frame 16 to form a middle frame 1a in which the plastic 17 and the metal middle frame 16 are integrally connected, so as to reduce the weight of the middle frame 1a and achieve the purpose of reducing the overall weight of the electronic device 100a.
  • the potential difference between magnesium alloy and the metal keys 5b is larger.
  • the middle frame 1a made of magnesium alloy, and the electronic device 100a is in a humid environment such as salt spray or seaside, the middle frame 1a is prone to galvanic corrosion at the position where the key slot 13 and the through hole 14 match the metal keys 5b.
  • Magnesium alloy will produce corrosion products of magnesium hydroxide during galvanic corrosion. The corrosion products accumulate in the key slot 13 and the through hole 14, which will cause the metal keys 5b to become stuck, malfunction, and have a bad feel, which will affect the normal use of the metal keys 5b.
  • the corrosion products When the corrosion degree becomes more and more serious, the corrosion products will enter the interior of the middle frame 1a along the through hole 14. Since the display screen 3 is arranged on the middle frame 1a, more and more corrosion products can easily lift up the display screen 3, causing the function and display failure of the display screen 3, seriously affecting the normal use of the electronic device 100a.
  • FIG. 7 shows a schematic diagram of a partial structure of a metal button 5 b and a middle frame 1 .
  • an embodiment of the present application provides a middle frame 1, which is applied to an electronic device 100.
  • a middle frame body 15 and the barrier 18 of the middle frame 1 when the metal functional part 5 is assembled in the installation opening 151 of the middle frame body 15, it can be blocked between the metal functional part 5 and the middle frame body 15 by the barrier 18, so as to reduce the risk of galvanic corrosion of the middle frame body 15 at the joint with the metal functional part 5, and even avoid the risk of galvanic corrosion of the middle frame 1.
  • the middle frame body 15 can be understood as the structure of the middle frame 1 except the barrier 18.
  • the metal functional part 5 shown in FIG7 is a metal button 5b (not shown) mentioned above.
  • the type and structure of the electronic device 100 can be found in the above description, and will not be further described here.
  • the matching part between the middle frame body 15 and the metal functional part 5 can be understood as the area of the middle frame body 15 facing the metal functional part 5 at the installation opening 151.
  • the matching part between the middle frame body 15 and the metal button 5b can be understood as the area of the middle frame body 15 facing the metal button 5b at the installation opening 151.
  • the middle frame 1 includes a middle frame body 15 , which can be made of metal material.
  • the middle frame body 15 has the same structure as the middle frame 1 , including a middle plate 101 and a frame 102 , which will not be described in detail here.
  • the middle frame body 15 has an installation opening 151 communicating with the outside, and the installation opening 151 is used to install the metal functional part 5 of the electronic device 100, so that the metal functional part 5 can be installed in the installation opening 151 and assembled on the middle frame body 15.
  • the inner wall of the installation opening 151 faces the metal functional part 5.
  • the installation opening 151 can be located on the circumferential surface of the frame 102 away from the middle plate 101, so that when the metal functional part 5 is installed on the installation opening 151 through the installation opening 151, it can be exposed on the outer surface of the electronic device 100, which is conducive to realizing the function of the metal functional part 5.
  • the middle frame 1 further includes a barrier 18, which is disposed on at least a portion of the inner wall of the mounting opening 151, and is used to separate the middle frame body 15 from the metal functional part 5.
  • a barrier 18 which is disposed on at least a portion of the inner wall of the mounting opening 151, and is used to separate the middle frame body 15 from the metal functional part 5.
  • the function and display failure of the display screen 3 due to galvanic corrosion of the middle frame body 15 can be effectively avoided, and the electronic device 100 with the middle frame 1 can be ensured to be in a humid environment such as salt spray and seaside, and the metal functional parts 5, the display screen 3 and the electronic device 100 can be used normally.
  • the metal button 5 b is a type of metal functional part 5, when the metal button 5 b is assembled at the installation opening 151 of the middle frame body 15, the relative contact area between the middle frame body 15 and the metal button 5 b can be reduced, thereby reducing the risk of galvanic corrosion at the fitting point between the middle frame body 15 and the metal button 5 b, and avoiding undesirable phenomena such as key jamming, functional failure, and poor hand feel of the metal button 5 b due to the accumulation of corrosion products in the installation opening 151, thereby ensuring the normal use of the metal button 5 b.
  • the middle frame 1 of the embodiment of the present application can also avoid functional and display failure problems of the display screen 3 due to galvanic corrosion of the middle frame body 15.
  • the metal button 5b may include but is not limited to the fingerprint button 53, the volume button 54 or the power button mentioned above.
  • the middle frame 1 of the present application can also reduce the risk of galvanic corrosion at the fitting point between the middle frame body 15 and the card tray 5a or other metal functional parts 5, and even avoid the occurrence of galvanic corrosion.
  • the molding material of the middle frame body 15 includes light metal. Compared with heavy metal, the present application limits the molding material of the middle frame body 15 and can make a lighter middle frame body 15 by utilizing the relatively low density of light metal to achieve weight reduction of the middle frame 1, so as to meet the weight reduction requirements of the electronic device 100.
  • the light metal may include magnesium alloy or other light metals with strength at least equal to that of magnesium alloy and chemically active properties.
  • the weight of the middle frame body made of magnesium alloy or other light metal can be reduced. 15, the risk of galvanic corrosion occurring at the joints with metal functional parts 5 such as metal buttons 5b, and even galvanic corrosion occurring at the joints with the middle frame body 15 and the metal functional parts 5 is avoided.
  • the barrier 18 forms an assembly opening 181 at the installation opening 151 that matches the outer edge shape of the metal functional part 5.
  • the assembly opening 181 is the same or similar to the outer edge shape of the metal functional part 5.
  • the assembly opening 181 is configured to assemble at least part of the structure of the metal functional part 5, so that while the metal functional part 5 is assembled on the middle frame 1 through the assembly opening 181, the barrier 18 can be blocked between the metal functional part 5 and the middle frame body 15.
  • the size of the assembly opening 181 is the same as or similar to the size of the key slot 13 in the above-mentioned related art, so as to ensure the smooth assembly of the metal functional part 5 .
  • the metal functional part 5 is one or more of the metal button 5b and the card tray 5a, so that when any one of the metal button 5b and the card tray 5a is assembled on the middle frame 1, it can also ensure the normal use of the metal button 5b and the card tray 5a when the electronic device 100 is in a humid environment such as salt spray and seaside.
  • the middle frame body 15 is provided with an installation opening 151 at each of the above-mentioned metal functional parts 5, and a barrier member 18 is provided on the inner wall of each installation opening 151, so that the metal functional parts 5 can be assembled in the corresponding installation opening 151 while ensuring the normal use of the above-mentioned metal functional parts 5 when the electronic device 100 is in a humid environment such as salt spray or seaside.
  • the metal functional part 5 is a card tray 5 a
  • the card tray 5 a can be completely located in the assembly opening 181 , and can be detachably assembled in the assembly opening 181 .
  • Fig. 8 shows a schematic diagram of a partial structure of the metal key 5b assembled on the middle frame.
  • Fig. 9 shows a schematic diagram of an internal partial cross-section of the metal key 5b in Fig. 8 in the c-c direction.
  • a partial structure of the metal key 5 b can be assembled in the assembly opening 181 , so that the metal key 5 b can protrude from the middle frame 1 for easy pressing by the user.
  • the structure of the middle frame 1 of the present application is further described below by taking the metal button 5b as an example.
  • the barrier 18 may be a plastic part, which is integrally formed with the middle frame body 15 to enhance the connection strength between the barrier 18 and the middle frame body 15 while enabling the barrier 18 to be better disposed at the inner wall of the mounting opening 151 , so as to prevent the middle frame body 15 from directly contacting the metal functional part 5 through the barrier layer, thereby reducing the risk of galvanic corrosion at the mounting opening 151 of the middle frame body 15 .
  • the molding material of the plastic part may include but is not limited to polyamide (PA), polycarbonate (PC) or other plastic particles.
  • PC polyamide
  • PC polycarbonate
  • the middle frame body 15 to form the middle frame 1.
  • 20% glass fiber means that the glass fiber accounts for 20% of the total mass of PC and glass fiber.
  • the density of the plastic particles is lower than that of light metal, the density of the plastic part is also lower than that of light metal. Therefore, by providing the barrier 18 , the weight of the middle frame 1 and the electronic device 100 can be further reduced.
  • the barrier 18 may be formed on the inner wall of the installation opening 151 of the middle frame body 15 by spraying insulating paint, passivation liquid, or using physical vapor deposition (PVD) and other surface treatment methods.
  • PVD physical vapor deposition
  • the barrier 18 formed on the inner wall of the installation opening 151 by such surface treatment methods can also improve the corrosion resistance of the middle frame body 15 at the installation opening 151 and reduce the risk of galvanic corrosion at the installation opening 151 of the middle frame body 15.
  • the formation method of the barrier member 18 is not further limited.
  • the structure of the middle frame 1 of the present application is further described below by taking the barrier member 18 as a plastic member as an example.
  • FIG. 10 is a partial cross-sectional schematic diagram showing the metal button 5 b omitted in FIG. 9 .
  • the blocking member 18 covers the inner wall of the mounting opening 151 at the first end (not shown) along the circumference of the mounting opening 151, and extends toward the second end (not shown) of the mounting opening 151 along the axial direction of the mounting opening 151.
  • the first end is an end of the mounting opening 151 adjacent to the circumferential side wall of the middle frame body 15.
  • the second end is an end of the mounting opening 151 facing the geometric center of the middle frame body 15.
  • the circumference of the mounting opening 151 may include any direction within the plane formed by the Y direction and the Z direction in FIG. 11.
  • the axial direction of the mounting opening 151 can refer to the X direction in FIG. 10.
  • the blocking member 18 can better cover the inner wall of the mounting opening 151 at the first end, so as to better block the middle frame body 15 and the metal functional part 5 in the circumference of the mounting opening 151.
  • the blocking member 18 By extending the blocking member 18 in the axial direction of the mounting opening 151, the blocking member 18 has a larger size in the axial direction of the mounting opening 151, which is beneficial to increase the blocking length of the blocking member 18 on the metal button 5b.
  • the blocking member 18 blocks at least part of the matching portion between the metal functional part 5 and the middle frame body 15, so as to further reduce the risk of galvanic corrosion at the mounting opening 151 of the middle frame body 15, and even avoid galvanic corrosion at the mounting opening 151 of the middle frame body 15.
  • the extended end of the barrier 18 may be located at the junction of the second end and the first end of the installation opening, so that the barrier 18 can at least block the fitting location between the metal keycap 511 of the metal key 5b and the middle frame body 15, thereby preventing galvanic corrosion from occurring at the fitting location between the middle frame body 15 and the metal keycap 511.
  • the extended end of the barrier 18 can also be flush with the edge of the second end of the installation opening 151, so that the barrier 18 can block all the fitting locations between the metal functional part 5 and the middle frame body 15, thereby preventing galvanic corrosion from occurring at the fitting locations between the middle frame body 15 and the metal button 5b.
  • the barrier 18 can also be wrapped around the peripheral edge of the middle frame body 15 and extend along the surface of the middle frame body 15 toward the inside of the installation opening 151, so that the barrier 18 can be set on at least part of the inner wall of the installation opening 151, and an integrated middle frame wrapped by the barrier 18 can be formed on the peripheral side of the middle frame body 15.
  • the plastic particles have a lower density than light metals such as magnesium alloys, and the weight of the middle frame 1 can be further reduced.
  • the thickness d 1 of the barrier 18 in the installation opening 151 is smaller than the thickness d 2 of the barrier 18 at the peripheral edge of the installation opening 151 , so that when the barrier 18 is injection-molded on at least a portion of the inner wall of the installation opening 151 , the middle frame body 15 has sufficient thickness at the installation opening 151 to ensure the structural strength of the middle frame body 15 at the installation opening 151 .
  • the blocking member 18 may also be disposed only on the inner wall of the installation opening 151 .
  • middle frame 1 of the present application is further described below by taking the integrated middle frame wrapped by the barrier member 18 as an example.
  • the size of the assembly opening 181 is the same as the size of the key slot 13 in the above-mentioned related technology
  • at least part of the size of the installation opening 151 of the middle frame body 15 needs to be at least larger than the size of the above-mentioned key slot 13, so as to sacrifice the thickness of the middle frame body 15 at the installation opening 151 and realize the setting of the barrier 18 on the inner wall of the installation opening 151.
  • the thickness d1 of the barrier 18 in the installation opening 151 can be greater than or equal to 0.25 mm to ensure that the plastic particles can be fully injected on the inner wall of the installation opening 151 during the injection molding process. This can not only ensure that the barrier 18 has a sufficient thickness, which is conducive to enhancing the barrier effect of the barrier 18, but also avoid the missing injection molding area on the inner wall of the installation opening 151 due to the thickness of the barrier 18 being too thin.
  • the thickness d1 can be 0.25 mm, 0.3 mm, 0.35 mm, 0.4 mm, etc.
  • the thickness d3 of the middle frame body 15 at the installation opening 151 may be greater than or equal to 0.4 mm to ensure that the middle frame body 15 has sufficient thickness and structural strength at the installation opening 151.
  • the thickness d3 of the middle frame body 15 at the installation opening 151 may be 0.4 mm, 0.45 mm, 0.5 mm, 0.55 mm, etc.
  • the mounting opening 151 includes a first mounting opening 1511 on the circumferential side wall of the middle frame body 15.
  • the first mounting opening 1511 may be a slot body on the middle frame body 15, and the slot body is an oblong structure. One end where the first mounting opening 1511 is located may form the first end of the mounting opening 151.
  • the barrier 18 is disposed on at least part of the inner wall of the first mounting opening 1511.
  • the assembly opening 181 includes a first assembly opening 1811 (not indicated).
  • the first assembly opening 1811 is located in the first mounting opening 1511 and is used to assemble a portion of the metal keycap 511 in the metal key 5b.
  • the first assembly opening 1811 may be an oblong assembly opening of the same shape as the first mounting opening 1511.
  • the size of the first assembly opening 1811 is the same as or similar to the size of the above-mentioned key slot 13.
  • the contact between the metal keycap 511 and the middle frame body 15 can be completely blocked, so as to avoid galvanic corrosion at the mating point (the first assembly opening 1811 ) between the middle frame body 15 and the metal keycap 511 .
  • the axial direction of the first mounting opening 1511 is the same as the moving direction of the metal keycap 511 in the first mounting opening 1511.
  • the axial direction of the first mounting opening 1511 can refer to the X direction. In this way, when the user presses the metal keycap 511, the metal keycap 511 can move toward the inside of the middle frame body 15 along the X direction in the first mounting opening 1511, so as to drive the trigger member 52 of the metal key 5b to move toward the inside of the middle frame body 15 along the X direction at the same time.
  • the conductive member 7 can be compressed, so that the conductive member 7 is elastically deformed toward one side of the key circuit board 6 and is connected to the key circuit board 6, thereby realizing the function of the metal key 5b.
  • the trigger member 52 may be a block structure or a columnar structure connected to the metal key cap 511. In the present application, the structure of the trigger member 52 is not further limited.
  • a cavity 152 for mounting a key circuit board 6 is further provided in the middle frame body 15.
  • the cavity 152 is located on the side of the first mounting opening 1511 facing the inside of the middle frame body 15, and is communicated with the first mounting opening 1511.
  • the key circuit board 6 is assembled in the cavity 152, and the conductive member 7 is located on the side of the key circuit board 6 facing the trigger member 52.
  • the structures of the key circuit board 6 and the conductive member 7 can be referred to the relevant description above, and will not be repeated here.
  • the size of the first assembly port 1811 (not marked) is greater than or equal to the sum of the size of the metal keycap 511 in the first assembly port 1811 and the moving stroke, so as to ensure that when the metal keycap 511 moves in the first assembly port 1811, the barrier 18 can be blocked between the metal keycap 511 and the middle frame body 15, so as to avoid galvanic corrosion at the mating point of the middle frame body 15 with the metal keycap 511.
  • annular groove 1512 may be formed on the inner wall of the first installation opening 1511.
  • Part of the structure of the barrier 18 may be embedded in the annular groove 1512 and surround the first assembly opening 1811 (not shown).
  • the barrier 18 and the middle frame body 15 can share a portion of thickness through the provision of the annular groove 1512 without affecting the thickness and strength of the middle frame body 15 at the first installation opening 1511, so that there is enough assembly space in the first assembly opening 1811 to ensure the smooth assembly and pressing of the metal button 5b in the first assembly opening 1811.
  • the barrier 18 can be flush with the inner wall of the first mounting opening 1511, and the annular groove 1512 is formed in the first
  • the inner wall of the installation opening 1511 extends toward one side of the geometric center of the middle frame body 15.
  • the inner wall of the first installation opening 1511 toward the geometric center of the middle frame body 15 can be understood as the second end of the installation opening 151.
  • the metal key 5b can be smoothly assembled and pressed in the first assembly opening 1811, and the axial dimension of the first assembly opening 1811 can be increased, which is conducive to increasing the blocking length of the blocking member 18 on the metal key 5b and enhancing the blocking effect of the blocking member 18 on the metal key 5b.
  • the mounting opening 151 on the middle frame 1 shown in FIG. 8 and FIG. 10 can be used to assemble the fingerprint key 53 in the metal key 5b.
  • FIG11 schematically shows a schematic diagram of the structure of a middle frame 1, and the middle frame 1 shows another installation opening 151 different from the middle frame 1, so as to assemble another metal key 5b in the electronic device 100.
  • the installation opening 151 shown in FIG11 can be used to assemble the volume key 54 in the metal key 5b.
  • FIG12 shows a schematic diagram of the structure of a volume key 54 and the middle frame in FIG11. Moreover, the volume key 54 shown in FIG12 is an integrated key.
  • the structure of the middle frame 1 is further described below by taking the volume key 54 as an example.
  • Fig. 13 is a partial cross-sectional schematic diagram of the middle frame 1 in Fig. 11 in the A-A direction
  • Fig. 14 is a partial structural schematic diagram of the metal key 5b in Fig. 12 assembled on the middle frame 1.
  • Fig. 14 is a cross-sectional diagram of the metal key 5b where the key cap 511 is not provided with the trigger member 52, and the position of the cross-section on the middle frame 1 can be seen from the above-mentioned A-A direction.
  • the barrier 18 may also be coated on the inner wall of the first installation opening 1511 and surround the first assembly opening 1811, so that the barrier 18 completely blocks the inner wall of the first installation opening 1511.
  • the barrier 18 can completely block the metal keycap 511 from the middle frame body 15, so as to prevent galvanic corrosion from occurring at the mating position between the middle frame body 15 and the metal keycap 511.
  • Fig. 15 is a schematic diagram of a partial cross section of the middle frame 1 in Fig. 11 in the B-B direction.
  • Fig. 16 is a schematic diagram of another partial structure of the metal key 5b in Fig. 12 assembled in the middle frame 1.
  • Fig. 16 shows a cross-sectional view of the metal key 5b at the trigger member 52, and the position of the cross section on the middle frame 1 can be seen from the above B-B direction.
  • a dirt storage groove 1812 is provided on the side wall of the first assembly opening 1811.
  • the number of the dirt storage grooves 1812 may be one or at least two. At least two dirt storage grooves 1812 may be distributed on two opposite side walls of the first assembly opening 1811.
  • the metal button 5b may bring dust into the first assembly opening 1811 after being pressed. In this way, by setting the dirt storage groove 1812, the dust brought into the first assembly opening 1811 can be collected to prevent the dust from entering the interior of the electronic device 100 and affecting the use of the electronic device 100.
  • the first assembly opening 1811 is configured to limit the movement of the metal keycap 511.
  • the first assembly opening 1811 By setting the first assembly opening 1811, on the basis of realizing the assembly of the metal keycap 511 in the middle frame body 15, when the metal keycap 511 is pressed and moves toward the inside of the middle frame body 15 in the first assembly opening 1811, the bottom wall of the first assembly opening 1811 can abut against the metal keycap 511 to limit the movement of the metal keycap 511 in the first assembly opening 1811, and the user can be prevented from over-pressing the metal keycap 511.
  • the distance between the metal keycap 511 and the bottom wall of the first assembly opening 1811 is equal to the movement stroke of the metal keycap 511 in the first assembly opening 1811, so that when the metal keycap 511 moves into position in the first assembly opening 1811, it can just abut against the bottom wall of the first assembly opening 1811.
  • the movement stroke of the metal keycap 511 in the first assembly opening 1811 is not further described, and reference may be made to the relevant settings in existing mobile phones.
  • annular groove 1512 may exist alone in one mounting opening 151.
  • the annular groove 1512 The dirt storage tank 1812 can also exist in the same installation port 151 at the same time.
  • the mounting opening 151 further includes a second mounting opening 1513.
  • the second mounting opening 1513 is located on the bottom wall of the first mounting opening 1511, and the first mounting opening 1511 is connected to the cavity 152 through the second mounting opening 1513.
  • the second mounting opening 1513 is configured to assemble a part of the triggering member 52 in the metal key 5b, so that when the metal keycap 511 is pressed, the triggering member 52 can be driven to move toward one side of the cavity 152 in the second mounting opening 1513, and compress the conductive member 7, so that the conductive member 7 is connected to the key circuit board 6, thereby realizing the function of the metal key 5b.
  • the diameter of the second mounting opening 1513 is smaller than that of the first mounting opening 1511 , so that the conductive member 7 installed in the second mounting opening 1513 can be connected to the key circuit board 6 , and the opening area on the middle frame body 15 can be reduced, which is beneficial to enhancing the structural strength of the middle frame 1 at the mounting opening 151 .
  • the axial direction of the second installation opening 1513 is parallel to the axial direction of the first installation opening 1511, and both can refer to the above-mentioned X direction.
  • the metal keycap 511 when the metal keycap 511 is pressed and moves in the first installation opening 1511, it can drive the trigger member 52 to move along the axial direction of the second installation opening 1513 toward one side of the cavity 152, thereby realizing the function of the metal key 5b and simplifying the structure of the installation opening 151 and the metal key 5b.
  • the structure of the installation openings 151 of the middle frame body 15 at different metal buttons 5 b will be further described below in combination with the assembly of different types of metal buttons 5 b in the assembly openings 181 .
  • the assembly opening 181 can be constructed to assemble the fingerprint key 53 in the metal key 5b, so as to realize the assembly of the fingerprint key 53 on the middle frame body 15 while reducing the risk of galvanic corrosion at the joint between the middle frame body 15 and the fingerprint key 53.
  • the fingerprint key 53 (not shown) further includes two clamping portions 512, which can be distributed on both sides of the trigger member 52.
  • the two clamping portions 512 and the trigger member 52 can be installed in the second installation opening 1513 and extend into the cavity 152 of the middle frame body 15.
  • the trigger member 52 contacts the conductive member 7, and the two clamping portions 512 are clamped with the cavity 152 wall of the cavity 152 to realize the assembly of the fingerprint key 53 on the middle frame body 15.
  • the second installation opening 1513 is also one.
  • the trigger member 52 may include a metal trigger member or a non-metal trigger member, and the material of the trigger member 52 of the fingerprint key 53 is not further limited in the present application.
  • the structure of the mounting opening 151 of the middle frame body 15 at the fingerprint key 53 is further described.
  • the middle frame body 15 has a relief groove 153 for avoiding the display screen 3 (not shown) at the installation opening 151 corresponding to the fingerprint key 53, and the relief groove 153 is adjacent to the second installation opening 1513 and the side where the first installation opening 1511 and the second installation opening 1513 meet in the Z direction.
  • This will result in a smaller thickness of the middle frame body 15 at the relief groove 153, making it difficult to inject and wrap the barrier 18 on the inner wall of the installation opening 151 corresponding to the relief groove 153.
  • the annular groove 1512 may be formed on the inner wall of the first mounting opening 1511 of the middle frame body 15 corresponding to the fingerprint key 53 .
  • the middle frame 1 may further include a protective layer (not shown), which is located on the side of the barrier 18 facing the second installation opening 1513 and covers a portion of the inner wall of the installation opening 151.
  • the protective layer is configured to enclose an assembly hole (not shown) for assembling the trigger member 52, so that the protective layer can protect the matching portion between the middle frame body 15 and the trigger member 52, so as to further reduce the risk of galvanic corrosion at the matching portion between the middle frame body 15 and the trigger member 52.
  • the protective layer may include a passivation layer or an insulating paint layer, so that the protective layer is formed by spraying a passivation liquid or an insulating paint on a portion of the inner wall of the installation opening 151.
  • a passivation liquid or an insulating paint that can protect light metals such as magnesium alloys in the prior art can be selected to form a corresponding protective layer.
  • the type of the passivation liquid or the insulating paint and the thickness of the protective layer are not further limited.
  • the protective layer may also be formed by electroplating or vapor deposition.
  • the method for forming the protective layer is not further limited.
  • the assembly port 181 may also be constructed to assemble the volume key 54 (not shown) in the metal button 5b, so as to achieve the assembly of the volume key 54 on the middle frame body 15 while reducing the risk of galvanic corrosion at the mating point between the middle frame body 15 and the volume key 54.
  • the volume key 54 has two trigger members 52, and the two trigger members 52 are connected to both ends of the metal keycap 511. Therefore, there are also two second mounting openings 1513.
  • the two second mounting openings 1513 are distributed on both sides of the first mounting opening 1511 along the length direction of the first mounting opening 1511.
  • the length direction of the first mounting opening 1511 can refer to the Y direction.
  • FIG. 17 schematically shows a partial schematic diagram of the metal button 5 b in FIG. 12 being assembled in the middle frame in FIG. 11 .
  • a key circuit board 6 and a conductive member 7 are disposed in the cavity 152 of the middle frame body 15 at positions corresponding to the trigger member 52.
  • the conductive member 7 in contact can be connected to the key circuit board 6 through a trigger member 52, thereby adjusting the volume up or down.
  • the volume key 54 also includes two snap-on portions 512 .
  • the mounting port 151 also includes a second third mounting port 151
  • the two third mounting ports 1514 are located on the bottom wall of the first mounting port 1511 and are distributed on opposite sides of the two second mounting ports 1513 .
  • the two snap-on portions 512 can be installed in the corresponding third mounting port 1514 and snap-on with the middle frame body 15 .
  • the trigger member 52 can be installed in the corresponding second mounting port 1513 , and extend into the cavity 152 of the middle frame body 15 , and contact the conductive member 7 , so as to realize the assembly of the fingerprint key 53 on the middle frame body 15 .
  • a mounting groove may also be provided on the bottom wall of the first mounting opening 1511 , and the mounting groove is located between the two second mounting openings 1513 , so that the metal keycap 511 can be fixed in the mounting groove by an elastic structure such as foam while being snap-fitted to the middle frame body 15 .
  • the trigger member 52 of the volume key 54 may include a metal trigger member or a non-metal trigger member. In the present application, no further limitation is made on the manufacturing material of the trigger member 52 of the volume key 54.
  • the structure of the mounting opening 151 of the middle frame body 15 at the fingerprint key 53 is further described.
  • the blocking member 18 may extend along the inner wall of the first installation opening 1511 to the edge of the second installation opening 1513. That is, the inner wall of the first installation opening 1511 may include the side wall and the bottom wall of the first installation opening 1511. The end where the second installation opening 1513 is located forms the second end of the installation opening 151.
  • the blocking member 18 extends When reaching the edge of the second installation opening 1513 , the extended end of the blocking member 18 is flush with the edge of the installation opening 151 at the second end, so that the blocking member 18 can completely cover the inner walls of the first installation opening 1511 and the second installation opening 1513 .
  • the dirt storage groove 1812 is also assembled on the side wall of the first assembly port 1811.
  • the number and location of the dirt storage grooves 1812 can refer to the relevant description above and will not be further described here.
  • the annular groove 1512 can also be formed on the inner wall of the first mounting port 1511 of the middle frame body 15 corresponding to the volume key 54. When the volume key 54 is pressed, the metal keycap 511 of the volume key 54 can abut against the bottom wall of the first assembly port 1811 to limit the movement of the metal keycap 511 in the first assembly port 1811.
  • the assembly opening 181 further includes a second assembly opening 1813.
  • the second assembly opening 1813 is located in the second installation opening 1513 and is used to assemble the trigger member 52.
  • the volume key 54 can be completely blocked from the middle frame body 15 by the blocking member 18, so as to reduce the risk of galvanic corrosion between the middle frame body 15 and the metal keycap 511 and the metal keycap 511.
  • the axial direction of the second assembly opening 1813 is the same as the moving direction of the trigger member 52 in the second assembly opening 1513 , which can be referred to as the X direction mentioned above. This makes it easier for the trigger member 52 to move in the first assembly opening 1811 .
  • the size of the second assembly opening 1813 is greater than or equal to the sum of the size of the trigger member 52 in the second assembly opening 1813 and the moving stroke, so as to ensure that when the trigger member 52 moves in the second assembly opening 1813 , the blocking member 18 can be blocked between the trigger member 52 and the middle frame body 15 , so as to avoid galvanic corrosion at the mating point of the middle frame body 15 with the trigger member 52 .
  • the movement stroke of the trigger member 52 in the second assembly opening 1813 is equal to the movement stroke of the metal key cap 511 in the first assembly opening 1811 .
  • the electronic device 100 provided in the embodiment of the present application includes a metal functional part 5 and the above-mentioned middle frame 1. At least part of the structure of the metal functional part 5 is located in the installation opening 151 of the middle frame 1, so that while the metal functional part 5 is assembled in the middle frame 1, the risk of galvanic corrosion occurring at the joint between the middle frame 1 and the metal functional part 5 can be reduced, so as to ensure the normal use of the metal functional part 5, the display screen 3 and the electronic device 100 when the electronic device 100 is in a humid environment such as salt spray or seaside.
  • the electronic device 100 may be a foldable electronic device or a non-foldable electronic device.
  • the electronic device 100 may include two rotatably connected middle frames 1.
  • the electronic device 100 may have only one middle frame 1.
  • the type of the electronic device 100 is not further limited.

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Abstract

本申请实施例提供一种中框及电子设备，中框包括中框本体和阻隔件，中框本体由金属材料制成，中框本体具有与外部相连通的安装口。安装口被构造为安装电子设备的金属功能件，且安装口的内壁面向金属功能件。阻隔件设置于安装口的至少部分内壁上，用于隔离开中框本体与金属功能件。本申请实施例提供的中框发生电偶腐蚀的风险较低。

Description

中框及电子设备
本申请要求于2023年08月14日提交中国国家知识产权局、申请号为202311020905.0、申请名称为“中框及电子设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及电子设备领域，特别涉及一种中框及电子设备。
背景技术
随着科技的发展，人们对手机、平板等电子设备的轻量化要求越来越高。
中框是电子设备中主要起支撑作用的结构。一些电子设备的中框采用镁合金等轻金属制成，以通过减轻中框的重量来达到减轻电子设备整体重量的目的。电子设备中的一些按键由金属制成，这些按键会装配在镁合金制成的中框上。然而，在电子设备处于盐雾、海边等潮湿环境下时，中框在与按键相配合的位置，容易产生电偶腐蚀，将会影响按键和电子设备的正常使用。
因此，如何避免上述电偶腐蚀，已成为有待解决的技术问题。
发明内容
本申请提供了一种中框及电子设备，能够降低中框发生电偶腐蚀的风险。
本申请实施例第一方面提供了一种中框，该中框应用于电子设备，中框包括：中框本体和阻隔件，中框本体由金属材料制成，中框本体具有与外部相连通的安装口，安装口用于安装电子设备的金属功能件，且安装口的内壁面向金属功能件；阻隔件设置于安装口的至少部分内壁上，用于隔离开中框本体与金属功能件。
本申请实施例通过中框中中框本体的设置，由于中框本体上具有安装口，以便电子设备的金属功能件能够通过安装口安装在中框本体上，实现金属功能件的功能。在此基础上，由于中框中的中框本体由金属材料制成，通过中框中阻隔件的设置，能够隔离开中框本体与金属功能件，以避免中框本体与金属功能件直接接触，从而降低中框本体与金属功能件的配合处发生电偶腐蚀的风险，使得本申请实施例的中框发生电偶腐蚀的风险的较低，以确保金属功能件在电子设备上的正常使用。由于金属按键为电子设备中的一种金属功能件，因此，当金属按键装配在中框本体的安装口处时，能够降低中框本体与金属按键的配合处发生电偶腐蚀，以确保金属按键的正常使用的同时，还能够避免电子设备的显示屏由于中框本体发生电偶腐蚀而导致的显示和功能失效问题。
在一些可选的实施方式中，中框本体的成型材料包括轻金属，以便能够利用轻金属的相对密度较小的特点，制成质量较轻的中框本体，以实现中框的减重。
在一些可选的实施方式中，轻金属包括镁合金。这样在降低实现中框的减重的同时， 通过阻隔件的设置，能够降低镁合金制成的中框本体与金属按键等金属功能件的配合处发生电偶腐蚀的风险，从而降低现有的镁合金制成的中框发生电偶腐蚀的风险。
在一些可选的实施方式中，阻隔件沿安装口的周向覆盖安装口在第一端的内壁，并沿安装口的轴向朝安装口的第二端延伸，第一端为安装口邻近中框本体的周向侧壁的一端。
这样不仅使得阻隔件能够安装口的周向上对中框本体与金属功能件进行更好的阻隔，而且通过对阻隔件的延伸方向进行限定，有利于增大阻隔件对金属按键的阻隔长度，以便进一步降低中框本体的安装口处发生电偶腐蚀的风险。
在一些可选的实施方式中，阻隔件的延伸末端与安装口的第二端的边沿平齐，以便阻隔件能够阻隔在金属功能件与中框本体的所有配合处，从而避免中框本体在与金属按键的配合处发生电偶腐蚀。
在一些可选的实施方式中，阻隔件为塑胶件，塑胶件与中框本体一体化成型，以增强阻隔件与中框本体的连接强度的同时，使得阻隔件能够更好的设置在安装口的内壁处的同时，能够实现中框的进一步减重。
在一些可选的实施方式中，阻隔件还包裹在中框本体的周侧边缘，并沿中框本体的表面朝安装口的内部延伸，以使阻隔件能够设置在安装口的至少部分内壁上的同时，还能够在中框本体的周侧能够形成阻隔件包裹的一体式中框。
在一些可选的实施方式中，阻隔件在安装口内的厚度小于阻隔件在安装口的周侧边缘处的厚度，以便于阻隔件注塑在安装口的至少部分内壁上的同时，还能够确保中框本体在安装口处的结构强度。
在一些可选的实施方式中，阻隔件在安装口处围成与金属功能件的外缘形状相适配的装配口，装配口被构造为装配金属功能件的至少部分结构，以便通过装配口内实现金属功能件在中框上的装配的同时，阻隔件能够阻隔在金属功能件与中框本体之间。
在一些可选的实施方式中，金属功能件中是金属按键和卡托中的一种或多种，以便实现金属按键和卡托中任一者在中框上装配的同时，还能够确保金属按键以及卡托在电子设备处于盐雾、海边等潮湿环境下的正常使用。
在一些可选的实施方式中，安装口包括在中框本体的周向侧壁上的第一安装口，阻隔件设置在第一安装口的至少部分内壁上；
装配口包括第一装配口，第一装配口位于第一安装口内，并用于装配金属按键中的部分金属键帽。
这样当金属按键装配在装配口内时，不仅能够便于用户的按压，而且通过阻隔件的设置，还能够免中框本体在与金属键帽的配合处发生电偶腐蚀。
在一些可选的实施方式中，第一安装口的轴向与金属键帽在第一安装口内的移动方向相同，以便金属键帽在第一安装口内的移动；
在第一安装口的轴向上，第一装配口的尺寸大于或等于金属键帽在第一装配口内的尺寸以及移动行程之和，以确保金属键帽在第一装配口内移动时，阻隔件均能够阻隔在金属键帽和中框本体之间。
在一些可选的实施方式中，第一安装口的内壁上形成有环形槽，阻隔件的部分结构嵌设在环形槽内，并围成第一装配口。
通过环形槽的设置，在不影响中框本体在第一安装口处的厚度以及强度的基础上，能 够确保金属按键在第一装配口内的顺利装配以及按压。
在一些可选的实施方式中，阻隔件与第一安装口的内壁平齐，环形槽在第一安装口的内壁上朝中框本体的几何中心的一侧延伸，以确保金属按键在第一装配口内的顺利装配以及按压的同时，还有利于增大阻隔件对金属按键的阻隔长度。
在一些可选的实施方式中，阻隔件包覆在第一安装口的内壁上，并围成第一装配口，第一装配口的内壁上具有藏污槽；
第一装配口用于限制金属键帽的移动行程。
这样通过阻隔件在第一安装口的内壁上的包覆，使得阻隔件能够完全遮挡在第一安装口的内壁上，以将金属键帽与中框本体完全阻隔。并且，通过藏污槽的设置，能够收集被带入第一装配口的灰尘。通过第一装配口的设置，在实现金属键帽在中框本体内的装配的同时，还能够避免用户过度按压金属键帽。
在一些可选的实施方式中，安装口还包括第二安装口，第二安装口位于第一安装口的底壁上；
第一安装口通过第二安装口与中框本体内安装按键电路板的腔体相连通，第二安装口被构造为装配金属按键中的部分触发件，以便金属键帽被按压时，能够带动触发件在第二安装口内朝腔体内的一侧移动，并压缩导通件，以使导通件与按键电路板导通，实现金属按键的功能。
在一些可选的实施方式中，第二安装口的口径小于第一安装口的口径，且第二安装口的轴向与第一安装口的轴向平行。这样在实现金属按键的功能的同时，还能够减小中框本体上的安装口开孔面积。
在一些可选的实施方式中，装配口被构造为装配金属按键中的指纹键，以实现指纹键在中框本体上的装配的同时，能够降低中框本体与指纹键的配合处发生电偶腐蚀的风险。
在一些可选的实施方式中，中框还包括防护层，防护层位于阻隔件朝第二安装口的一侧，并覆盖在安装口的部分内壁上，防护层被构造为围成装配触发件的装配孔。
通过防护层的设置，能够对中框本体与触发件的配合处进行防护，以进一步降低中框本体在安装口处与触发件发生电偶腐蚀风险。
在一些可选的实施方式中，防护层包括钝化层或者绝缘漆层，以便形成防护层。
在一些可选的实施方式中，装配口被构造为装配金属按键中的音量键，以实现音量键在中框本体上的装配的同时，能够降低中框本体与音量键的配合处发生电偶腐蚀的风险。
在一些可选的实施方式中，阻隔件沿第一安装口的内壁延伸至第二安装口的边沿；
装配口还包括第二装配口，第二装配口位于第二安装口内，并用于装配触发件。
这样在音量键装配在装配口内时，通过阻隔件还能够将音量键与中框本体完全阻隔，以降低中框本体在与金属键帽和金属键帽的配合处发生电偶腐蚀的风险。
在一些可选的实施方式中，第二装配口的轴向与触发件在第二安装口内的移动方向相同，以便触发件在第一装配口内移动；
在第二装配口的轴向上，第二装配口的尺寸大于或等于触发件在第二装配口内的尺寸以及移动行程之和，以确保触发件在第二装配口内移动时，阻隔件均能够阻隔在触发件和中框本体之间。
在一些可选的实施方式中，阻隔件在安装口内的厚度大于或等于0.25mm，以确保塑 胶粒子在注塑的过程中能够充分注塑安装口的内壁上，不仅能够确保阻隔件具有足够的厚度，而且能够避免因阻隔件的厚度过薄，在安装口的内壁上出现被遗漏的注塑区域；中框本体在安装口处的厚度大于或等于0.4mm，以确保中框本体在安装口处具有足够的结构强度。
在一些可选的实施方式中，中框本体包括中板和边框，边框围设在中板的周侧边缘，安装口位于边框远离中板一侧的周向面上，以便金属功能件能够通过安装口安装在中框本体上，实现金属功能件的功能。
本申请实施例第二方面提供了一种电子设备，电子设备包括金属功能件和如上的中框，金属功能件的至少部分结构位于中框的安装口内，以实现金属功能件在中框内的装配的同时，还能够确保电子设备处于盐雾、海边等潮湿环境下，金属功能件以及电子设备的显示屏的正常使用。
附图说明
图1为本申请实施例提供的一种电子设备处于折叠态到展平态之间的中间状态的结构示意图；
图2为图1中的电子设备在折叠态的结构示意图；
图3为图1中的电子设备在展开态的结构示意图；
图4为图1中的电子设备的拆分结构示意图；
图5为相关技术中提供的一种指纹键装配在电子设备内的局部截面示意图；
图6为相关技术中提供的一种音量键装配在电子设备内的局部截面示意图；
图7为本申请实施例提供一种金属按键与中框的局部结构示意图；
图8为本申请实施例提供一种金属按键装配在中框上的局部结构示意图；
图9为图8中的金属按键处的局部截面示意图；
图10为图9中省略金属按键的局部截面示意图；
图11为本申请实施例提供的一种中框的结构示意图；
图12为本申请实施例提供的一种金属按键与图11中的中框的结构示意图；
图13为图11中的中框在A-A方向的局部截面示意图；
图14为图12中金属按键装配在中框上的局部结构示意图一；
图15为图11中的中框在B-B方向的局部截面示意图；
图16为图12中的金属按键装配在中框中的局部结构示意图二；
图17为图12中的金属按键装配在图11中的中框中的局部示意图。
附图标记：
100-电子设备；
1-中框；101-中板；102-边框；11-第一中框；12-第二中框；13-按键槽；14-通孔；
15-中框本体；151-安装口；1511-第一安装口；1512-环形槽；1513-第二安装口；1514-
第三安装口；152-腔体；153-避让槽；16-金属中框；17-塑胶；
18-阻隔件；181-装配口；1811-第一装配口；1812-藏污槽；1813-第二装配口；
2-后盖；3-显示屏；31-第一显示屏；32-第二显示屏；4-转轴机构；
5-金属功能件；5a-卡托；5b-金属按键；51-键帽；511-金属键帽；512-卡接部；52-触
发件；53-指纹键；54-音量键；
6-按键电路板；7-导通件；
X-宽度方向；Y-长度方向；Z-厚度方向。
具体实施方式
本申请的实施方式部分使用的术语仅用于对本申请的具体实施例进行解释，而非旨在限定本申请。
为便于理解，首先对本申请实施例所涉及的相关技术术语进行解释和说明。
轻金属，指的是相对密度小于5的金属。轻金属分为有色轻金属和稀有轻金属两类。有色轻金属有铝、镁、钙、钛、钾、锶、钡等。铝、镁、钛及其合金相对密度较小，强度较高，可广泛应用与电子设备的制造等领域。
重金属，指的是相对密度在5以上的金属。例如，重金属可以包括但不限于为铜、铅、锌、锡、镍、钴、锑、汞、镉和铋等。
电偶腐蚀，又称接触腐蚀，指的是两种不同的金属相互接触而同时处于电解质中所产生的电化学腐蚀。由于它们构成自发电池，故受腐蚀的是较活泼的及作为阳极的金属。
本申请实施例提供一种电子设备，该电子设备可以包括但不限于为手机、平板电脑(即pad)、笔记本电脑、超级移动个人计算机(ultra-mobile personal computer，UMPC)、手持计算机、电话手表、对讲机、手持终端等具有中框的电子设备。
下面以手机为例，对本申请的电子设备的结构作进一步阐述。
图1至图3分别示意出了本申请适用的电子设备的不同构型。具体地，电子设备为折叠式电子设备。其中，图1示意了电子设备处于折叠态到展平态之间的中间状态的构型，图2示意了电子设备处于折叠态的构型，图3示意了电子设备处于展平态的构型。
下面结合图1至图3具体描述电子设备的结构。电子设备100包括转轴机构4和两个中框1，这两个中框通过转轴机构4转动连接。其中，两个中框1分别为第一中框11和第二中框12。第一中框11和第二中框12分别连接于转轴机构4相对的两侧，以便第一中框11和第二中框12可以绕着转轴机构4相对转动，实现电子设备100的展平和折叠。
第一中框11和第二中框12可以沿着图1中箭头所示的方向相向运动来达到图2中所示的折叠态。参见图2中所示，当电子设备100处于折叠态时，第一中框11和第二中框12相互层叠。
第一中框11和第二中框12可以沿着图1中箭头所示的相反方向运动来达到图3中所示的展平态。参见图3中所示，当电子设备100处于展平态时，第一中框11和第二中框12处于同一平面。
图4示意性示出了图3中的电子设备100的拆分结构。
参见图4所示，中框1包括相互连接的中板101和边框102，边框102围设在中板101的周侧边缘，并与中板101一同构成中框1。边框102为由多个侧边框围成的方环形的边框结构。边框102显露于电子设备100的外表面的部分可以形成中框1的外观面。
继续参见图4，电子设备100还包括后盖2，后盖2可以盖设在第一中框11上，与所盖设的中框1形成容置腔。或者，电子设备100可以包括两块后盖2，两块后盖2分别盖设在第一中框11和第二中框12上。本申请中对上述两种情况不做特别限定。
下面以后盖2盖设在第一中框11为例，对电子设备100的结构作进一步阐述。
继续参见图4，电子设备100还可以包括显示屏3，显示屏3可以包括第一显示屏31，第一显示屏31可以为柔性显示屏。第一显示屏31可以同时盖设在第一中框11和第二中框12的同侧，并和后盖2分布于第一中框11相对的两侧。当电子设备100处于折叠态时，第一显示屏31同样也处于折叠态。当电子设备100处于展平态时，第一显示屏31同样也处于展平态。这样，电子设备100可以通过第一中框11和第二中框12的相对转动来改变构型，实现折叠态和展平态的转换，能同时满足电子设备100的大的显示面积和用户的方便携带。
继续参见图4，在一些实施例中，除第一显示屏31之外，显示屏3还可以包括第二显示屏32，第二显示屏32可以为刚性显示屏。第二显示屏32可以盖设在第二中框12与第一显示屏31相对的一侧。第一显示屏31和第二显示屏32均与电子设备100内部的电路板电连接，可用于显示各种信息，还可以接收用户输入的信息。
需要说明的是，电子设备100还可以包括一个中框1，后盖2和显示屏3可以盖设在中框1相对的两侧，以形成非折叠式电子设备。此时，显示屏3可以仅包括刚性显示屏。
下面以折叠式电子设备为例，对电子设备100的结构作进一步阐述。
继续参见图4，电子设备100还可以金属功能件5。金属功能件5包括卡托5a。第一中框11的外观面上可以设置有与电子设备100的内部相连通的卡槽(未示意)，卡托5a能够可拆卸地装配在卡槽内。同样地，卡托5a还可以装配在第二中框12的外观面上。卡托5a用于放置用户持有的用户身份识别(Subscriber Identity Module，SIM)卡卡托5a，以实现电子设备100的通信功能。
继续参见图3，金属功能件5还包括按键。为提供电子设备100的质感，按键通常采用不锈钢等金属制成。以下将这种按键统称为金属按键5b。金属按键5b包括音量键54、指纹键53或电源键(未标示)。
其中，音量键54用于对电子设备100的音量进行调节。例如，音量键54可以为兼具音量增大和音量减小功能的一体式按键。或者，电子设备100可以包括两个单独的音量键54，其中一个音量键54用于增大音量，而另一个音量键54用于减小音量。本申请不具体限定音量键的数量。
指纹键53用于识别用户的指纹，以帮助实现电子设备100的显示屏3解锁、快捷支付以及加密等功能。另外，电源键用于控制电子设备100的开关机。在一些实施例中，指纹键53和电源键可以为两个相互独立的按键，也可以集成为单个按键(如图4和图6所示)，以在实现多种功能的同时，简化电子设备100的结构。
下面以指纹键53和一体式的音量键54为例，对电子设备100的结构作进一步阐述。
继续参见图4并结合图2，指纹键53可以嵌设于第一中框11中右边框的外观面上。音量键54可以嵌设于第二中框12中左边框的外观面上，并与指纹键53在Y方向上错开设置，使得电子设备100处于折叠态时，音量键54和指纹键53能够在电子设备100的同侧错开设置，以确保这两个金属按键5b的正常使用。或者，在另一些实施例中，指纹键53和音量键54均可以嵌设于第一中框11中右边框上。
图5示意性示出了相关技术中的一种指纹键53装配在电子设备100a内的局部截面示意图。该图在电子设备100a上的截面位置可以参见图3中示意的a-a方向。
参见图5所示，中框1a在对应指纹键53处设置有一个按键槽13，按键槽13的槽底具有与电子设备100a的内部相连通的通孔14。指纹键53包括相互连接的键帽51和触发件52。键帽51可以嵌设在按键槽13内。触发件52位于键帽51朝通孔14的一侧，并安装在通孔14内，以实现指纹键53在电子设备100a上的装配。
电子设备100a内在对应指纹键53处分别具有按键电路板6和导通件7，按键电路板6为与电子设备100a的电路板电连接的柔性电路板。导通件7可以包括但不限于为按键弹片，按键弹片也可以称为锅仔片。导通件7设置于按键电路板6朝指纹键53的一侧。在用户按压键帽51时，键帽51能够朝电子设备100a的内部移动，并带动触发件52朝同一方向同时移动。并且，在触发件52移动的过程中会触发导通件7，并迫使导通件7朝按键电路板6的一侧发生弹性形变，从而使导通件7与按键电路板6接触导通，实现指纹键53的功能。
图6示意性示出了相关技术中的一种音量键54装配在电子设备100a内的局部截面示意图。该图在电子设备100a上的截面位置可以参见图2中示意的b-b方向。
参见图6所示，音量键54同样也包括键帽51和触发件52。音量键54在中框1a内的装配以及按键原理可以参见上文对指纹键53的相关描述。与指纹键53不同之处在于，音量键54的触发件52与通孔14的孔壁之间的间距，通常小于指纹键53的触发件52与通孔14的孔壁，使得中框1a在指纹键53对应的通孔14处的厚度较薄。
由于镁合金比重为铝合金的68％，锌合金的27％，钢铁的23％，使得镁合金和铝合金的质量较小，尤其镁合金。目前，相关技术中会采用镁合金、铝合金等轻金属制成金属中框16。并且，在金属中框16的周侧边缘包裹塑胶17，形成塑胶17和金属中框16一体连接的中框1a，以通过减轻中框1a的重量达到减轻电子设备100a整体重量的目的。
与型材铝或者压铸铝相比，镁合金与上述金属按键5b之间的电位差较大。当这些金属按键5b装配在镁合金制成的中框1a上，且在电子设备100a处于盐雾、海边等潮湿环境下时，该中框1a在按键槽13和通孔14与金属按键5b相配合的位置，容易产生电偶腐蚀。镁合金在电偶腐蚀中会产生氢氧化镁的腐蚀产物。腐蚀产物堆积在按键槽13和通孔14内，将会造成金属按键5b出现卡键、功能失效、手感不良等不良现象，这样将会影响金属按键5b的正常使用。
当腐蚀程度越来越重时，腐蚀产物会沿通孔14进入中框1a的内部。由于显示屏3设置在中框1a上，越来越多的腐蚀产物很容易将显示屏3顶起，造成显示屏3的功能和显示失效的问题，严重影响电子设备100a的正常使用。
因此，如何避免中框1a发生电偶腐蚀，成为有待解决的技术问题。
图7示意了一种金属按键5b与中框1的局部结构示意图。
参见图7所示，本申请实施例提供了一种中框1，应用于电子设备100。通过中框1的中框本体15以及阻隔件18的设置，以便金属功能件5装配在中框本体15的安装口151内时，能够通过阻隔件18阻隔在金属功能件5和中框本体15之间，以降低中框本体15在与金属功能件5的配合处发生电偶腐蚀的风险，甚至避免中框1发生电偶腐蚀的风险的较低。其中，中框本体15可以理解为中框1中除阻隔件18之外的结构。图7中示意的金属功能件5为上述的一种金属按键5b(未标示)。
其中，电子设备100的种类以及结构可以参见上文中的相关描述，在此不再进一步赘 述。中框本体15与金属功能件5的配合处可以理解为中框本体15在安装口151面向金属功能件5的区域。例如，中框本体15与金属按键5b的配合处可以理解为中框本体15在安装口151面向金属按键5b的区域。
下面结合附图和实施例，对本申请实施例的中框1的结构作进一步阐述。
继续参见图7，中框1包括中框本体15，中框本体15可以由金属材料制成。中框本体15与中框1具有相同的结构，均包括中板101和边框102，在此不再赘述。
继续参见图7，中框本体15具有与外部相连通的安装口151，安装口151用于安装电子设备100的金属功能件5，以便金属功能件5能够安装在安装口151内，并装配在中框本体15上。安装口151的内壁面向金属功能件5。
其中，安装口151可以位于边框102远离中板101一侧的周向面上，以便金属功能件5通过安装口151安装在安装口151上时，能够显露于电子设备100的外表面，有利于实现金属功能件5的功能。
继续参见图7，中框1还包括阻隔件18，阻隔件18设置于安装口151的至少部分内壁上，用于隔离开中框本体15与金属功能件5。这样当金属功能件5装配在安装口151内时，由于阻隔件18的存在，能够阻隔在中框本体15和至少部分金属功能件5之间，以避免中框本体15与金属功能件5直接接触，减少中框本体15与金属功能件5接触的相对面积，从而降低中框本体15与金属功能件5的配合处发生电偶腐蚀的风险，甚至避免中框本体15与金属功能件5的配合处发生电偶腐蚀，以确保金属功能件5在电子设备100上的正常使用。
除此之外，由于中框本体15发生电偶腐蚀的风险被降低或者避免，使得中框本体15上具有较少甚至没有电偶腐蚀的腐蚀产物，因此，通过阻隔件18的设置，还能够有效的避免显示屏3由于中框本体15的电偶腐蚀所导致的功能和显示失效的问题，能够确保具有中框1的电子设备100处于盐雾、海边等潮湿环境下，金属功能件5、显示屏3以及电子设备100的正常使用。
由于金属按键5b作为金属功能件5的一种，因此，当金属按键5b装配在中框本体15的安装口151处时，能够减少中框本体15与金属按键5b接触的相对面积，降低中框本体15与金属按键5b的配合处发生电偶腐蚀的风险，避免金属按键5b由于腐蚀产物在安装口151内堆积出现的卡键、功能失效、手感不良等不良现象，以确保金属按键5b的正常使用。
并且，由于中框本体15与金属按键5b的配合处发生电偶腐蚀的风险降低，使得中框本体15因电偶腐蚀产生的腐蚀产物较小，因此，本申请实施例的中框1还能够避免显示屏3由于中框本体15发生电偶腐蚀而导致的功能和显示失效问题。
其中，金属按键5b可以包括但不限于为上述的指纹键53、音量键54或电源键等。
除金属按键5b之外，本申请的中框1还能够降低中框本体15与卡托5a或者其他金属功能件5的配合处发生电偶腐蚀的风险，甚至避免电偶腐蚀的发生。
中框本体15的成型材料包括轻金属。相较于重金属，本申请通过对中框本体15的成型材料进行限定，能够利用轻金属的相对密度较小的特点，制成质量较轻的中框本体15，以实现中框1的减重，以便满足电子设备100的减重需求。
示例性的，轻金属可以包括镁合金或者其他强度至少等同于镁合金且化学性质活波的轻金属。这样在实现中框1的减重的同时，能够降低镁合金或其他轻金属制成的中框本体 15，在与金属按键5b等金属功能件5的配合处发生电偶腐蚀的风险，甚至避免中框本体15在与金属功能件5的配合处发生电偶腐蚀。
在本申请中，对中框本体15的材料不做进一步限定。下面以镁合金为例，对本申请的中框1的结构作进一步阐述。
继续参见图7，阻隔件18在安装口151处围成与金属功能件5的外缘形状相适配的装配口181。也就是说，装配口181与金属功能件5的外缘形状相同或者相近。装配口181被构造为装配金属功能件5的至少部分结构，以便通过装配口181内实现金属功能件5在中框1上的装配的同时，阻隔件18能够阻隔在金属功能件5与中框本体15之间。
需要说明的是，装配口181的尺寸与上述相关技术中按键槽13的尺寸相同或相近，以确保金属功能件5的顺利装配。
其中，金属功能件5是金属按键5b和卡托5a中的一种或多种，以便实现金属按键5b和卡托5a中任一者在中框1上装配的同时，还能够确保金属按键5b以及卡托5a在电子设备100处于盐雾、海边等潮湿环境下的正常使用。
中框本体15在上述各金属功能件5处均设有安装口151，且各安装口151的内壁上均设有阻隔件18，以便实现金属功能件5在对应安装口151内装配的同时，还能够确保上述各金属功能件5在电子设备100处于盐雾、海边等潮湿环境下的正常使用。
需要说明的是，当金属功能件5为卡托5a时，卡托5a可以完全位于装配口181内，并能够可拆卸的装配在装配口181内。
图8示意出了金属按键5b装配在中框上的局部结构示意图。图9示意出了图8中的金属按键5b在c-c方向处的内部局部截面示意图。
参见图8和图9所示，金属按键5b的部分结构可以装配在装配口181内，使得金属按键5b能够凸出于中框1，以便于用户的按压。
下面以金属按键5b为例，对本申请的中框1的结构作进一步阐述。
继续参见图9所示，在一些实施例中，阻隔件18可以为塑胶件，塑胶件与中框本体15一体化成型，以增强阻隔件18与中框本体15的连接强度的同时，使得阻隔件18能够更好的设置在安装口151的内壁处，以通过阻隔层阻隔中框本体15与金属功能件5直接接触，降低中框本体15的安装口151处发生电偶腐蚀的风险。
示例性的，塑胶件的成型材料可以包括但不限于为聚酰胺(polyamide，PA)、聚碳酸酯(Polycarbonate，PC)或者其他的塑胶粒子。以PC为例，PC可与20％玻纤混合后，通过注塑的方式形成在安装口151处，并与中框本体15一体连接，以形成中框1。其中，20％玻纤指的是玻纤占PC和玻纤总质量的20％。
由于上述塑胶粒子的密度小于轻金属的密度，使得塑胶件的密度也同样小于轻金属的密度，因此，通过阻隔件18的设置，还能实现中框1以及电子设备100的进一步减重。
或者，在另一些实施例中，中框本体15在安装口151的内壁上还可以采用喷涂绝缘漆、钝化液、或者采用物理气相沉积(Physical Vapor Deposition，PVD)等表面处理方式形成阻隔件18。通过这样表面处理方式在安装口151的内壁上形成的阻隔件18同样能够提升中框本体15在安装口151处的抗腐蚀能力，并降低中框本体15的安装口151处发生电偶腐蚀的风险。
在本申请中，对阻隔件18的形成方式不做进一步限定。
下面以阻隔件18为塑胶件为例，对本申请的中框1的结构作进一步阐述。
图10示意了图9中省略了金属按键5b的局部截面示意图。
参见图10所示，阻隔件18沿安装口151的周向覆盖安装口151在第一端(未标示)的内壁，并沿安装口151的轴向朝安装口151的第二端(未标示)延伸。第一端为安装口151邻近中框本体15的周向侧壁的一端。相应的，第二端为安装口151朝向中框本体15的几何中心的一端。其中，安装口151的周向可以包括由图11中的Y方向和Z方向所形成的平面内的任一方向。安装口151的轴向可以参见图10中的X方向。
通过阻隔件18沿安装口151的周向覆盖在安装口151在第一端的内壁，不仅使得阻隔件18能够更好的覆盖在安装口151在第一端的内壁上，以在安装口151的周向上对中框本体15与金属功能件5进行更好的阻隔。
通过阻隔件18沿安装口151的轴向上的延伸，使得阻隔件18在安装口151的轴向上具有更大的尺寸，有利于增大阻隔件18对金属按键5b的阻隔长度，通过阻隔件18阻隔在金属功能件5与中框本体15的至少部分配合处，以便进一步降低中框本体15的安装口151处发生电偶腐蚀的风险，甚至能够避免中框本体15的安装口151处发生电偶腐蚀。
再次参见图9所示，在一些实施例中，阻隔件18的延伸末端可以位于安装口在第二端与第一端的相接处，使得阻隔件18至少能够阻隔在金属按键5b的金属键帽511与中框本体15的配合处，从而避免中框本体15在与金属键帽511的配合处发生电偶腐蚀。
或者，在一些实施例中，阻隔件18的延伸末端还可以与安装口151的第二端的边沿平齐，以便阻隔件18能够阻隔在金属功能件5与中框本体15的所有配合处，从而避免中框本体15在与金属按键5b的配合处发生电偶腐蚀。
继续参见图10，在一些实施例中，阻隔件18还可以包裹在中框本体15的周侧边缘，并沿中框本体15的表面朝安装口151的内部延伸，以使阻隔件18能够设置在安装口151的至少部分内壁上的同时，还能够在中框本体15的周侧形成被阻隔件18包裹的一体式中框。这样利用塑胶粒子相较镁合金等轻金属具有较低密度的特点，还能够实现中框1的进一步减重。
继续参见图10，阻隔件18在安装口151内的厚度d1小于阻隔件18在安装口151的周侧边缘处的厚度d2，以便阻隔件18注塑在安装口151的至少部分内壁上的同时，使得中框本体15在安装口151处具有足够的厚度，以确保中框本体15在安装口151处的结构强度。
或者，在另一些实施例中，阻隔件18还可以仅设置在安装口151的内壁上。
下面以阻隔件18包裹的一体式中框为例，对本申请的中框1的结构作进一步阐述。
为确保装配口181的尺寸与上述相关技术中按键槽13的尺寸相同，在中框本体15的制作过程中，中框本体15的安装口151的至少部分尺寸需至少大于上述按键槽13的尺寸，以便牺牲中框本体15在安装口151处的厚度，实现阻隔件18在安装口151的内壁上的设置。
继续参见图10，阻隔件18在安装口151内的厚度d1可以大于或等于0.25mm，以确保塑胶粒子在注塑的过程中能够充分注塑在安装口151的内壁上，不仅能够确保阻隔件18具有足够的厚度，有利于增强阻隔件18的阻隔效果，而且能够避免因阻隔件18的厚度过薄，在安装口151的内壁上出现被遗漏的注塑区域。例如，阻隔件18在安装口151处的 厚度d1可以为0.25mm、0.3mm、0.35mm、0.4mm等。
继续参见图10，中框本体15在安装口151处的厚度d3可以大于或等于0.4mm，以确保中框本体15在安装口151处具有足够的厚度以及结构强度。例如，中框本体15在安装口151处的厚度d3可以为0.4mm、0.45mm、0.5m、0.55mm等。
继续参见图10并结合图9所示，安装口151包括在中框本体15的周向侧壁上的第一安装口1511。第一安装口1511可以为中框本体15上的槽体，该槽体为长圆形结构。第一安装口1511所在的一端可以形成安装口151的第一端。阻隔件18设置在第一安装口1511的至少部分内壁上。装配口181包括第一装配口1811(未标示)。第一装配口1811位于第一安装口1511内，并用于装配金属按键5b中的部分金属键帽511。第一装配口1811可以与第一安装口1511的形状相同的长圆形装配口。第一装配口1811的尺寸与上述按键槽13的尺寸相同或相近。
这样当金属按键5b装配在装配口181内时，金属按键5b的部分结构位于第一装配口1811内，另一部分结构可以凸出于中框1，以使金属键帽511的部分结构嵌设在第一装配口1811内，以便于用户的按压。
并且，由于阻隔件18的设置，能够完全阻隔金属键帽511与中框本体15的接触，以避免中框本体15在与金属键帽511的配合处(第一装配口1811处)发生电偶腐蚀。
继续参见图10并结合图9，第一安装口1511的轴向与金属键帽511在第一安装口1511内的移动方向相同。第一安装口1511的轴向可以参见X方向。这样用户在按压金属键帽511时，金属键帽511能够在第一安装口1511内沿X方向朝中框本体15的内部移动，以便带动金属按键5b的触发件52同时沿X方向朝中框本体15的内部移动。这样通过触发件52的移动，能够压缩导通件7，以使导通件7朝按键电路板6的一侧发生弹性形变，并与按键电路板6导通，从而实现金属按键5b的功能。
其中，触发件52可以与金属键帽511连接的块状结构或者柱状结构。在本申请中，对触发件52的结构不做进一步限定。
继续参见图10，中框本体15内还设有安装按键电路板6的腔体152。该腔体152位于第一安装口1511朝中框本体15的内部的一侧，并与第一安装口1511相连通。按键电路板6装配在该腔体152内，且导通件7位于按键电路板6朝触发件52的一侧。按键电路板6和导通件7的结构可以参见上文中的相关描述，在此不做赘述。
在第一安装口1511的轴向上(X方向)，第一装配口1811(未标示)的尺寸大于或等于金属键帽511在第一装配口1811内的尺寸以及移动行程之和，以确保金属键帽511在第一装配口1811内移动时，阻隔件18均能够阻隔在金属键帽511和中框本体15之间，以避免中框本体15在与金属键帽511的配合处发生电偶腐蚀。
继续参见图10，在一些实施例中，第一安装口1511的内壁上还可以形成有环形槽1512。阻隔件18的部分结构可以嵌设在环形槽1512内，并围成第一装配口1811(未标示)。这样在中框1在第一安装口1511处的强度具有冗余时，通过环形槽1512的设置，在不影响中框本体15在第一安装口1511处的厚度以及强度的基础上，能够使得阻隔件18与中框本体15共用一部分厚度，以便第一装配口1811内具有足够的装配空间，以确保金属按键5b在第一装配口1811内的顺利装配以及按压。
继续参见图10，阻隔件18可以与第一安装口1511的内壁平齐，环形槽1512在第一 安装口1511的内壁上朝中框本体15的几何中心的一侧延伸。第一安装口1511的内壁上朝中框本体15的几何中心的一侧可以理解为安装口151的第二端。这样能够确保金属按键5b在第一装配口1811内的顺利装配以及按压的同时，还能够增大第一装配口1811在第一安装口1511的轴向上的尺寸，有利于增大阻隔件18对金属按键5b的阻隔长度，增强阻隔件18对金属按键5b的阻隔效果。
需要说明的是，图8和图10示意的中框1上的安装口151可以用于装配金属按键5b中的指纹键53。
图11示意性示出了一种中框1的结构示意图，该中框1示意了另一种不同于中框1中的安装口151，以便装配电子设备100中的另一金属按键5b。例如，图11中示意的安装口151可以用于装配金属按键5b中的音量键54。图12示意出了一种音量键54与图11中的中框的结构示意图。并且，图12示意的音量键54为一体式按键。
下面以音量键54为例，对中框1的结构作进一步阐述。
图13示意了图11中的中框1在A-A方向的局部截面示意图，图14示意了图12中的金属按键5b装配在中框1上的一种局部结构示意图。图14示出了金属按键5b在键帽511未设有触发件52处的剖面图，该剖面在中框1上的位置可以参见上述A-A方向。
参见图11至图13所示，在另一些实施例中，阻隔件18还可以包覆在第一安装口1511的内壁上，并围成第一装配口1811，以便通过阻隔件18完全遮挡在第一安装口1511的内壁上。参见图14所示，这样在金属按键5b装配在第一装配口1811内时，阻隔件18能够将金属键帽511与中框本体15完全阻隔，以避免中框本体15在与金属键帽511的配合处发生电偶腐蚀。
图15示意了图11中的中框1在B-B方向的局部截面示意图。图16示意了图12中的金属按键5b装配在中框1中的另一种局部结构示意图。图16示出了金属按键5b在触发件52处的剖面图，该剖面在中框1上的位置可以参见上述B-B方向。
参见图15和图16所示，第一装配口1811的侧壁上具有藏污槽1812。藏污槽1812的数量可以为一个或者至少两个。至少两个藏污槽1812可以分布在第一装配口1811的两个相对的侧壁上。金属按键5b在按压后可能会将灰尘带入第一装配口1811。这样通过藏污槽1812的设置，能够收集被带入第一装配口1811的灰尘，以避免灰尘进入电子设备100的内部，影响电子设备100的使用。
继续参见图16，第一装配口1811被构造为限制金属键帽511的移动行程。通过第一装配口1811的设置，在实现金属键帽511在中框本体15内的装配的基础上，在金属键帽511被按压，并在第一装配口1811内朝中框本体15的内部移动时，第一装配口1811的底壁能够与金属键帽511相抵接，以限制金属键帽511在第一装配口1811内的移动行程，能够避免用户过度按压金属键帽511。
继续参见图16，金属键帽511装配在第一装配口1811内时，金属键帽511与第一装配口1811的底壁之间的距离等于金属键帽511在第一装配口1811内的移动行程，以便金属键帽511在第一装配口1811内移动到位时，能够刚好与第一装配口1811的底壁抵接。在本申请中，对金属键帽511在第一装配口1811内的移动行程不做进一步描述，可以参见现有手机中的相关设置。
需要说明的是，环形槽1512可以单独存在于一个安装口151内。或者，环形槽1512 和藏污槽1812也可以同时存在与同一安装口151内。
继续参见图16，安装口151还包括第二安装口1513。第二安装口1513位于第一安装口1511的底壁上，第一安装口1511通过第二安装口1513与腔体152相连通。其中，第二安装口1513被构造为装配金属按键5b中的部分触发件52，以便金属键帽511被按压时，能够带动触发件52在第二安装口1513内朝腔体152内的一侧移动，并压缩导通件7，以使导通件7与按键电路板6导通，实现金属按键5b的功能。
继续参见图16，第二安装口1513的口径小于第一安装口1511的口径，以便导通件7装配在第二安装口1513内能与按键电路板6导通的基础上，还能够减小中框本体15上的开孔面积，有利于增强中框1在安装口151处的结构强度。
第二安装口1513的轴向与第一安装口1511的轴向平行，均可以参见上述的X方向。这样金属键帽511被按压且在第一安装口1511内移动时，能够带动触发件52沿第二安装口1513的轴向朝腔体152内的一侧移动，实现金属按键5b的功能的同时，还能够简化安装口151以及金属按键5b的结构。
其中，第二安装口1513可以为一个或两个，以便实现不同种类的金属按键5b在中框1上的装配。
下面将结合不同类型的金属按键5b在装配口181内的装配，对中框本体15在不同金属按键5b处安装口151的结构作进一步阐述。
在一些实施例中，装配口181可以被构造为装配金属按键5b中的指纹键53，以实现指纹键53在中框本体15上的装配的同时，能够降低中框本体15与指纹键53的配合处发生电偶腐蚀的风险。
再次参见图7所示，指纹键53(未标示)还包括两个卡接部512，两个卡接部512可以分布于位于触发件52的两侧。在金属键帽511装配在第一装配口1811内时，两个卡接部512和触发件52可以安装在第二安装口1513内，并伸入中框本体15的腔体152内。触发件52与导通件7接触，两个卡接部512与腔体152的腔体152壁卡接，以实现指纹键53在中框本体15上的装配。
在金属按键5b为指纹键53时，由于指纹键53的触发件52为一个，因此，第二安装口1513也为一个。触发件52可以包括金属触发件，也可以包括非金属触发件，在本申请中对指纹键53的触发件52的材料不做进一步限定。
以金属触发件为例，对中框本体15在指纹键53处安装口151的结构作进一步阐述。
再次参见图10，由于中框本体15在指纹键53对应的安装口151处具有避让显示屏3(未示意)的避让槽153，且该避让槽153在Z方向邻近第二安装口1513以及第一安装口1511和第二安装口1513相接的一侧。这样会导致中框本体15在避让槽153处的厚度较小，使得安装口151在对应避让槽153处的内壁上难以注塑并包裹阻隔件18。
为便于实现指纹键53在安装口151内的设置，指纹键53的触发件52与安装口151的内壁之间需预留较大的装配间隙。尽管安装口151在对应避让槽153处的内壁上无设置阻隔件18，由于装配间隙的存在，使得中框本体15在安装口151处与触发件52发生电偶腐蚀风险较低。因此，当指纹键53装配在本申请的中框本体15上时，仅通过阻隔件18在第一安装口1511上的设置，也同样能够降低中框本体15与指纹键53的配合处发生电偶腐蚀的风险。
环形槽1512可以形成在中框本体15在指纹键53对应的第一安装口1511的内壁上。
在一些实施例中，中框1还可以包括防护层(未示意)，防护层位于阻隔件18朝第二安装口1513的一侧，并覆盖在安装口151的部分内壁上。其中，防护层被构造为围成装配触发件52的装配孔(未示意)，以便通过防护层对中框本体15与触发件52的配合处进行防护，以进一步降低中框本体15在与触发件52的配合处发生电偶腐蚀风险。
其中，防护层可以包括钝化层或者绝缘漆层，以便通过在安装口151的部分内壁上喷涂钝化液或者绝缘漆，来形成防护层。其中，在防护层的形成过程中，可以选用现有技术中能够对镁合金等轻金属起到防护效果的钝化液或者绝缘漆，来形成相应的防护层。在本申请中，对钝化液或者绝缘漆的种类以及防护层的厚度不做进一步限定。
或者，防护层还可以采用电镀或者气相沉积的方式形成。在本申请中，对防护层的形成方式不做进一步限定。
再次参见图12，在另一些实施例中，装配口181还可以被构造为装配金属按键5b中的音量键54(未标示)，以实现音量键54在中框本体15上的装配的同时，能够降低中框本体15与音量键54的配合处发生电偶腐蚀的风险。
再次参见图11和图12，该音量键54的触发件52为两个，两个触发件52连接在金属键帽511的两端。因此，第二安装口1513也为两个。两个第二安装口1513沿第一安装口1511的长度方向上分布于第一安装口1511的两侧。第一安装口1511的长度方向可以参见Y方向。通过两个安装口151的设置，以便两个触发件52可以分别装配在一个第二安装口1513内。
图17示意性示出了图12中的金属按键5b装配在图11中的中框中内的局部示意图。
参见图17所示，中框本体15的腔体152内在对应触发件52的位置均设置有一个按键电路板6和导通件7。这样用户在按压键帽51的任意一侧时，均能够通过一个触发件52将所接触的导通件7与按键电路板6导通，从而实现上调或者下调音量。
再次参见图11和图12，音量键54同样包括两个卡接部512。与指纹键53不同之处在于，安装口151还包括第两个三安装口151，两个第三安装口1514位于第一安装口1511的底壁上，并分布在两个第二安装口1513相对的两侧。在金属键帽511装配在第一装配口1811内时，两个卡接部512可以安装在对应的第三安装口1514内，并与中框本体15卡接。触发件52可以安装在对应的第二安装口1513内，并伸入中框本体15的腔体152内，与导通件7接触，以实现指纹键53在中框本体15上的装配。
第一安装口1511的底壁上还可以设置有安装槽(未标示)，安装槽位于两个第二安装口1513之间，以便金属键帽511在与中框本体15卡接的同时，还能通过泡棉等弹性结构固定在安装槽内。
音量键54的触发件52可以包括金属触发件，也可以包括非金属触发件，在本申请中对音量键54的触发件52的制造材料不做进一步限定。
同样以金属触发件为例，对中框本体15在指纹键53处安装口151的结构作进一步阐述。
再次参见图15和图16，阻隔件18可以沿第一安装口1511的内壁延伸至第二安装口1513的边沿。也就是说，其中，第一安装口1511的内壁可以包括第一安装口1511的侧壁和底壁。其中，第二安装口1513所在的一端形成安装口151的第二端，当阻隔件18延伸 至第二安装口1513的边沿时，阻隔件18的延伸末端与安装口151在第二端的边沿平齐，使得阻隔件18能够完全遮挡在第一安装口1511和第二安装口1513的内壁上。
藏污槽1812还装配在第一装配口1811的侧壁上。藏污槽1812的数量以及设置位置可以参见上文中的相关描述，在此不再进一步赘述。环形槽1512也可以形成在中框本体15在音量键54对应的第一安装口1511的内壁上。在音量键54被按压时，音量键54的金属键帽511能够与第一装配口1811的底壁抵接，以限制金属键帽511在第一装配口1811内的移动行程。
再次参见图16，装配口181还包括第二装配口1813。第二装配口1813位于第二安装口1513内，并用于装配触发件52。这样在音量键54装配在装配口181内时，通过阻隔件18还能够将音量键54与中框本体15完全阻隔，以降低中框本体15在与金属键帽511和金属键帽511的配合处发生电偶腐蚀的风险。
其中，第二装配口1813的轴向与触发件52在第二安装口1513内的移动方向相同，可以参见上述的X方向。这样能够便于触发件52在第一装配口1811内移动。
再次参见图16，在第二装配口1813的轴向上，第二装配口1813的尺寸大于或等于触发件52在第二装配口1813内的尺寸以及移动行程之和，以确保触发件52在第二装配口1813内移动时，阻隔件18均能够阻隔在触发件52和中框本体15之间，以避免中框本体15在与触发件52的配合处发生电偶腐蚀。
需要说明的是，由于触发件52与金属键帽511同时移动，因此，触发件52在第二装配口1813内的移动行程等于金属键帽511在第一装配口1811内的移动行程。
在上述基础上，本申请实施例的提供的电子设备100包括金属功能件5和上述的中框1。金属功能件5的至少部分结构位于中框1的安装口151内，以在实现金属功能件5在中框1内的装配的同时，还能够降低中框1在与金属功能件5的配合处发生电偶腐蚀的风险，以确保电子设备100处于盐雾、海边等潮湿环境下，金属功能件5、显示屏3以及电子设备100的正常使用。
正如上文中所描述的，金属功能件5与安装口151的阻隔件18之间具有间隙，以便于金属功能件5在阻隔件18所形成的第一装配口1811内的装配。
电子设备100可以为以折叠式电子设备或者非折叠式电子设备。在电子设备100为折叠式电子设备时，电子设备100内可以包括两个转动连接的中框1。在电子设备100为非折叠式电子设备时，电子设备100可以仅具有一个中框1。在本申请中，对电子设备100的类型不做进一步限定。
需要说明的是，电子设备100的其他结构可以参见上文中的相关描述，在此不做进一步赘述。
在本申请实施例的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应作广义理解，例如，可以是固定连接，也可以是通过中间媒介间接相连，可以是两个元件内部的连通或者两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请实施例中的具体含义。
本申请实施例的说明书和权利要求书及上述附图中的术语“第一”、“第二”、“第三”、“第四”等(如果存在)是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。

Claims (26)

  1. 一种中框，应用于电子设备，其特征在于，包括：中框本体和阻隔件，所述中框本体由金属材料制成所述中框本体具有与外部相连通的安装口，所述安装口用于安装所述电子设备的金属功能件，且所述安装口的内壁面向所述金属功能件；所述阻隔件设置于所述安装口的至少部分内壁上，用于隔离开所述中框本体与所述金属功能件。
  2. 根据权利要求1所述的中框，其特征在于，所述中框本体的成型材料包括轻金属。
  3. 根据权利要求2所述的中框，其特征在于，所述轻金属包括镁合金。
  4. 根据权利要求1-3中任一项所述的中框，其特征在于，所述阻隔件沿所述安装口的周向覆盖所述安装口在第一端的内壁，并沿所述安装口的轴向朝所述安装口的第二端延伸，所述第一端为所述安装口邻近所述中框本体的周向侧壁的一端。
  5. 根据权利要求4所述的中框，其特征在于，所述阻隔件的延伸末端与所述安装口的第二端的边沿平齐。
  6. 根据权利要求1-5中任一项所述的中框，其特征在于，所述阻隔件为塑胶件，所述塑胶件与所述中框本体一体化成型。
  7. 根据权利要求6所述的中框，其特征在于，所述阻隔件还包裹在所述中框本体的周侧边缘，并沿所述中框本体的表面朝所述安装口的内部延伸。
  8. 根据权利要求7所述的中框，其特征在于，所述阻隔件在所述安装口内的厚度小于所述阻隔件在所述安装口的周侧边缘处的厚度。
  9. 根据权利要求1-8中任一项所述的中框，其特征在于，所述阻隔件在所述安装口处围成与所述金属功能件的外缘形状相适配的装配口，所述装配口被构造为装配所述金属功能件的至少部分结构。
  10. 根据权利要求9所述的中框，其特征在于，所述金属功能件是金属按键和卡托中的一种或多种。
  11. 根据权利要求10所述的中框，其特征在于，所述安装口包括在所述中框本体的周向侧壁上的第一安装口，所述阻隔件设置在所述第一安装口的至少部分内壁上；
    所述装配口包括第一装配口，所述第一装配口位于所述第一安装口内，并用于装配所述金属按键中的部分金属键帽。
  12. 根据权利要求11所述的中框，其特征在于，所述第一安装口的轴向与所述金属键帽在所述第一安装口内的移动方向相同；
    在所述第一安装口的轴向上，所述第一装配口的尺寸大于或等于所述金属键帽在所述第一装配口内的尺寸以及移动行程之和。
  13. 根据权利要求11或12所述的中框，其特征在于，所述第一安装口的内壁上形成有环形槽，所述阻隔件的部分结构嵌设在所述环形槽内，并围成所述第一装配口。
  14. 根据权利要求13所述的中框，其特征在于，所述阻隔件与所述第一安装口的内壁平齐，所述环形槽在所述第一安装口的内壁上朝所述中框本体的几何中心的一侧延伸。
  15. 根据权利要求11或12所述的中框，其特征在于，所述阻隔件包覆在所述第一安装口的内壁上，并围成所述第一装配口，所述第一装配口的内壁上具有藏污槽；
    所述第一装配口被构造为限制所述金属键帽的移动行程。
  16. 根据权利要求11-15中任一项所述的中框，其特征在于，所述安装口还包括第二安装口，所述第二安装口位于所述第一安装口的底壁上；
    所述第一安装口通过所述第二安装口与所述中框本体内安装按键电路板的腔体相连通，所述第二安装口被构造为装配所述金属按键中的部分触发件。
  17. 根据权利要求16所述的中框，其特征在于，所述第二安装口的口径小于所述第一安装口的口径，且所述第二安装口的轴向与所述第一安装口的轴向平行。
  18. 根据权利要求16或17所述的中框，其特征在于，所述装配口被构造为装配所述金属按键中的指纹键。
  19. 根据权利要求18所述的中框，其特征在于，还包括防护层，所述防护层位于所述阻隔件朝所述第二安装口的一侧，并覆盖在所述安装口的部分内壁上，所述防护层被构造为围成装配所述触发件的装配孔。
  20. 根据权利要求19所述的中框，其特征在于，所述防护层包括钝化层或者绝缘漆层。
  21. 根据权利要求16或17中任一项所述的中框，其特征在于，所述装配口被构造为装配所述金属按键中的音量键。
  22. 根据权利要求21所述的中框，其特征在于，所述阻隔件沿所述第一安装口的内壁延伸至所述第二安装口的边沿；
    所述装配口还包括第二装配口，所述第二装配口位于所述第二安装口内，并用于装配所述触发件。
  23. 根据权利要求22所述的中框，其特征在于，所述第二装配口的轴向与所述触发件在所述第二安装口内的移动方向相同；
    在所述第二装配口的轴向上，所述第二装配口的尺寸大于或等于所述触发件在所述第二装配口内的尺寸以及移动行程之和。
  24. 根据权利要求1-23中任一项所述的中框，其特征在于，所述阻隔件在所述安装口内的厚度大于或等于0.25mm，所述中框本体在所述安装口处的厚度大于或等于0.4mm。
  25. 根据权利要求1-24中任一项所述的中框，其特征在于，所述中框本体包括中板和边框，所述边框围设在所述中板的周侧边缘，所述安装口位于所述边框远离所述中板一侧的周向面上。
  26. 一种电子设备，其特征在于，包括金属功能件和如权利要求1-25中任一项所述的中框，所述金属功能件的至少部分结构位于所述中框的安装口内。
PCT/CN2024/081152 2023-08-14 2024-03-12 中框及电子设备 Pending WO2025035751A1 (zh)

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Citations (4)

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Publication number Priority date Publication date Assignee Title
JP2005339931A (ja) * 2004-05-26 2005-12-08 Toyota Motor Corp 電池，組電池および異種金属間接続継ぎ手
CN108321508A (zh) * 2018-01-31 2018-07-24 广东欧珀移动通信有限公司 天线组件及电子设备
CN111128011A (zh) * 2018-10-31 2020-05-08 乐金显示有限公司 柔性显示设备和包括该柔性显示设备的电子装置
CN116453712A (zh) * 2022-01-14 2023-07-18 苹果公司 电子设备

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005339931A (ja) * 2004-05-26 2005-12-08 Toyota Motor Corp 電池，組電池および異種金属間接続継ぎ手
CN108321508A (zh) * 2018-01-31 2018-07-24 广东欧珀移动通信有限公司 天线组件及电子设备
CN111128011A (zh) * 2018-10-31 2020-05-08 乐金显示有限公司 柔性显示设备和包括该柔性显示设备的电子装置
CN116453712A (zh) * 2022-01-14 2023-07-18 苹果公司 电子设备

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