Electronic device

Abstract

The present application discloses an electronic device, comprising a middle frame, a display screen and a button. The button comprises a button switch, a button body and a connecting portion. The connecting portion protrudes from the surface of the button body. The middle frame comprises a middle plate and a bezel. The middle frame comprises a first surface and a second surface. The bezel comprises an appearance surface and an inner side surface. The bezel is connected to the peripheral side of the middle plate. The middle frame further comprises a mounting slot and a button slot. The mounting slot and the button slot are spaced apart from each other. The mounting slot is formed on the first surface. The button slot comprises an accommodating slot portion and a snap-fit slot portion. The accommodating slot portion is formed on the appearance surface. The snap-fit slot portion is formed on the second surface. The accommodating slot portion is in communication with the snap-fit slot portion, and the snap-fit slot portion is spaced apart from the mounting slot by means of a spacing portion. The button body is accommodated in the accommodating slot portion. The connecting portion is deformable and passes through the accommodating slot portion to be snap-fitted into the snap-fit slot portion. The button switch is accommodated in the mounting slot. The button switch abuts against the button body. The display screen is stacked on the second surface. The peripheral side surface of the display screen and the inner side surface of the bezel are sealed by means of a first sealant layer.

Description

Electronic device

[0001] The present application claims priority to the patent application No. 202410866333.6 filed in China on June 29, 2024, and entitled "Electronic device", the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of communication equipment, in particular to an electronic device. BACKGROUND

[0003] In the field of consumer electronics, such as mobile phones, tablet computers and other devices, physical keys such as volume keys and power-on keys are provided. Many of these keys are inserted into the key hole of the device shell by forced assembly (using plastic deformation), which can effectively reduce the cost of physical keys. However, after the assembly of the keys and the middle frame, the sealing effect of the whole machine is poor due to the poor sealing performance of the key hole. SUMMARY

[0004] The present application provides an electronic device, which can solve the technical problem of poor sealing performance of the physical keys and the shell of the electronic device.

[0005] The present application provides an electronic device, which comprises a middle frame, a display screen and a key.

[0006] The key comprises a key switch, a key body and a connecting part, the connecting part is protruded on the surface of the key body.

[0007] The middle frame comprises a middle plate and a frame, the middle frame comprises a first surface and a second surface which is arranged opposite to the first surface, the frame comprises an appearance surface and an inner surface which is arranged opposite to the appearance surface, the frame is connected to the circumferential side of the middle plate, and the inner surface is connected to the first surface and the second surface.

[0008] The middle frame further comprises a mounting groove and a key groove, the mounting groove and the key groove are spaced apart, and the mounting groove is recessed from the first surface to the second surface.

[0009] The key groove comprises a containing groove part and a clamping groove part, the containing groove part is recessed from the appearance surface to the inner surface, the clamping groove part is recessed from the second surface to the first surface, the containing groove part and the clamping groove part are communicated, and the clamping groove part and the mounting groove are spaced apart by a spacing part.

[0010] The key body is accommodated in the accommodating groove, the connecting part is deformable and clamped through the groove bottom wall of the accommodating groove, the key switch is accommodated in the mounting groove, and the key switch extends into the accommodating groove and abuts against the key body through the groove bottom wall of the accommodating groove, wherein the key switch and the connecting part are spaced apart along the length direction of the frame,

[0011] The display screen is stacked on the second surface, and the circumferential side of the display screen and the inner side of the frame are sealed by a first sealant layer.

[0012] In the embodiment, the key is installed, pressed and reset with the middle frame through the elastic connecting part, and a complex reset structure does not need to be arranged on the key or the accommodating groove, and only a sealing structure needs to be arranged between the key switch and the key groove, so that the overall structure is simple, assembly is facilitated, and production cost is reduced. The first sealant layer is arranged on the side of the display screen, the sealing between the display screen and the middle frame is realized, the slot of the clamping groove is sealed, and external water vapor, dust and the like are prevented from entering the clamping groove. Further, the slot of the clamping groove and the slot of the mounting groove are not on the same side, and the mounting groove accommodating the key switch and the clamping groove cooperating with the connecting part are separated by the spacing part, so that external water vapor, dust and the like are prevented from entering the mounting groove through the clamping groove to affect the key switch connected to the power supply, and the sealing performance of the mounting groove is thus double-protected. The technical problem of poor sealing performance of the physical key and the shell of the electronic device is solved.

[0013] In an embodiment, the inner side of the frame is provided with a sealing layer at the connection with the second surface, the sealing layer connects the first sealant layer and the middle frame, and the edge of the sealing layer away from the frame is connected with the edge of the slot of the clamping groove. The sealing layer can be a Mylar film layer, which can further prevent external water vapor, impurities and the like from entering the clamping groove through the gap between the display screen and the middle frame. Along the width direction of the middle frame, the width of the sealing layer is greater than or equal to 0.8 mm. The sealing performance can be effectively realized.

[0014] In an embodiment, the sealing layer further includes an extension part covering the slot of the clamping groove on the second surface. Along the width direction of the middle frame, the width of the extension part is greater than or equal to 0.8 mm. The extension part completely seals the slot of the clamping groove, and the clamping groove is double-sealed by the first sealant layer.

[0015] In an embodiment, the electronic device further includes a rear shell, and along the thickness direction of the middle frame, the orthographic projection of the clamping groove is completely located in the part of the first surface between the mounting groove and the frame,

[0016] The electronic device further comprises a second sealant layer, the back cover is arranged on the middle frame and covers the first surface, and the second sealant layer is connected between the inner surface periphery of the back cover and the first surface between the mounting groove and the frame. The width of the second sealant layer is greater than or equal to 0.8 mm along the width direction of the middle frame. The area between the mounting groove and the frame covers the clamping groove part in the thickness direction of the middle frame, but no opening is arranged, so that the width of the area is large, the second sealant layer with a larger size can be arranged, the sealing area between the back cover and the middle frame is prolonged, and the mounting groove can also be effectively sealed.

[0017] In an embodiment, the second sealant layer covers the notch of the mounting groove on the first surface. The second sealant layer can better seal the mounting groove, so that foreign matters cannot enter through the gap between the back cover and the middle frame.

[0018] In an embodiment, the clamping groove part comprises a clamping wall, the clamping wall is provided with an assembly hole penetrating through the clamping wall and the groove bottom wall of the accommodating groove part, and the clamping wall is arranged in a spaced and opposite manner with the spacing part.

[0019] The connecting part comprises a body and a clamping flange connected to the body, the clamping flange comprises two sub-flanges protruding from the body, and the clamping flange can be elastically deformed.

[0020] The key body is accommodated in the accommodating groove part, the two sub-flanges are pressed and deformed to pass through the assembly hole, and the two sub-flanges are clamped with the groove wall of the clamping groove after elastically restoring the original shape after extending into the clamping groove. The key of the embodiment only needs to be connected with the middle frame through the clamping flange which can be deformed, and the structure is simple and convenient to install.

[0021] In an embodiment, the surface of the key body is further provided with a protrusion, the body is connected to and wraps the protrusion, and the hardness of the connecting part is less than the hardness of the protrusion and the key body. The connecting part of the embodiment is connected with the protrusion with greater hardness, which can realize deformation and has sufficient strength support.

[0022] In an embodiment, the first sealant layer is further connected between the display screen and the second surface. The first sealant layer improves the sealing between the display screen and the middle frame. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the present application, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creating labor.

[0024] FIG. 1 is a structural schematic diagram of an electronic device provided by an embodiment of the present application;

[0025] FIG. 2 is an exploded structural schematic diagram of part of the electronic device shown in FIG. 1;

[0026] FIG. 3 is a structural schematic diagram of part of the electronic device shown in FIG. 2;

[0027] FIG. 4 is a cross-sectional schematic diagram of part of the structure of the middle frame of the electronic device shown in FIG. 2;

[0028] FIG. 5 is a cross-sectional schematic diagram of part of the structure of the electronic device shown in FIG. 1 from one angle;

[0029] FIG. 6 is a cross-sectional schematic diagram of part of the structure of the electronic device shown in FIG. 1 from another angle;

[0030] FIG. 7 is a structural schematic diagram of part of the structure of the electronic device shown in FIG. 6 from another angle. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0032] Please refer to FIG. 1, which is a structural schematic diagram of an electronic device provided by an embodiment of the present application.

[0033] The electronic device 100 includes but is not limited to a cell phone, a notebook computer, a tablet personal computer, a personal digital assistant, a mobile device, or the like. In the embodiments of the present application, the electronic device 100 is taken as a tablet phone for example.

[0034] For the convenience of description, the width direction of the foldable electronic device 100 is defined as the X-axis direction, the length direction of the foldable electronic device 100 is defined as the Y-axis direction, and the thickness direction of the foldable electronic device 100 is defined as the Z-axis direction. The X-axis direction, the Y-axis direction, and the Z-axis direction are perpendicular to each other in pairs.

[0035] The electronic device 100 comprises a middle frame 10, a display screen 20 and a back cover 30. The display screen 20 and the back cover 30 are arranged on opposite sides of the middle frame 10. The middle frame 10 and the back cover 30 are used to accommodate the battery, the circuit board, the camera and the speaker of the electronic device 100, and other related functional devices for realizing the performance of the electronic device, which also includes auxiliary physical structures such as a camera support, etc. The display screen can be a liquid crystal display (LCD). The back cover 30 is the shell of the electronic device and is also a battery cover.

[0036] Please refer to FIG. 2, which is an exploded structural schematic diagram of part of the electronic device shown in FIG. 1. The electronic device 100 can be a folding machine, and the display screen 20 can be a flexible display screen 20 such as an organic light-emitting diode (OLED). The display screen 20 comprises a back surface 21 and a display surface 22. The display surface 22 is used to display pictures and can also be used to operate the performance of the electronic device. The electronic device 100 further comprises a key assembly. The key assembly is arranged on the middle frame 10. The key assembly can be the switch key and the volume key of the electronic device 100. In this embodiment, the volume key is taken as an example.

[0037] Please refer to FIG. 2 and FIG. 3, which is a structural schematic diagram of part of the electronic device shown in FIG. 2. The key 40 comprises a key body 41 and a key module 46. The key module 46 comprises a circuit board and two key switches 461 arranged on the circuit board.

[0038] The key body 41 comprises an inner surface 411 and an outer surface 412. The inner surface 411 and the outer surface 412 are arranged in opposite directions along the thickness direction of the key 40. After the key 40 is arranged on the middle frame 10, the outer surface 412 is exposed to the middle frame 10 as the pressing surface and the appearance surface of the key 40. The key body 41 is further provided with a limiting body 413, which is protruded from the inner surface 411; specifically, it is protruded from the middle part of the inner surface 411. The limiting body 413 is used to limit the stroke of the key body 41 when it is pressed. The key body 41 is further provided with two protruding columns (not shown in the figure), which are protruded from the inner surface 411. The two protruding columns are arranged in a spaced manner along the length direction of the key body 41. The protruding columns can be cylindrical or T-shaped. In this embodiment, the key body 41 is a strip-shaped block, and the key body 41 can be made of hard plastic or soft plastic. The limiting body 413 is made of soft plastic.

[0039] The key 40 further comprises two connecting parts 42, which are arranged on one side of the key body 41 and used to connect the key to the middle frame 10.

[0040] The connecting portion 42 is made of elastic material such as elastic rubber. The connecting portion 42 comprises a body 421 and a clamping flange 422 connected to the body 421. Specifically, the clamping flange 422 is protruded from the side edge of the end of the body 421 and protrudes from the opposite sides of the body 421 along the width direction of the key body 41. It can be understood that the cross section of the clamping flange 422 and the body 421 can be T-shaped. The two connecting portions 42 can be the same or different in structure as long as they do not affect the installation of the middle frame 10. It can be understood that the clamping flange 422 comprises two sub-flanges extending along the width direction of the key body 41 and protruding from the body 421. In this embodiment, the connecting portion 42 and the protruding column of the key body are integrally formed by injection molding, the body 421 is sleeved on the protruding column and wraps the outer peripheral surface of the protruding column; and the clamping flange 422 is away from the inner surface 411. In one embodiment, the clamping flange 422 further comprises a sub-flange protruding from the body 421 along the length direction of the key body 41, that is, the clamping flange 422 comprises three sub-flanges in different directions.

[0041] In one embodiment, along the length direction of the key body 41, the end of the body 421 is further provided with a clamping block 423, and the protruding direction of the clamping block 423 is perpendicular to the clamping flange 422. The clamping blocks of the two connecting portions 42 are arranged away from each other along the length direction of the key body 41. In other embodiments, the clamping block can be omitted.

[0042] The key body 41 is further provided with an abutting table 415 connected to the surface of one side of the body 421. Along the thickness direction of the key body 41, the height of the abutting table 415 is smaller than the height of the body 421. After the body 421 is connected to the key body 41, the abutting table 415 is connected to the inner surface 411 of the key body 41, and along the length direction of the key body 41, the abutting table 415 of the connecting portion 42 is located between the body 421 and the limiting body 413. The abutting table 415 is used to abut against the volume switch of the key module 46.

[0043] As shown in FIG. 2 and FIG. 3, in the embodiment, the middle frame 10 comprises a middle plate 11 and a frame 13. The middle plate 11 comprises a first surface 111 and a second surface 112, which are oppositely arranged along the thickness direction of the middle plate 11. The frame 13 is connected to the edges of the middle plate 11 and surrounds the first surface 111 and the second surface 112. The frame 13 comprises an appearance surface 131 and an inner surface 132, which are oppositely arranged along the thickness direction of the frame 13. The inner surface 132 is connected to the first surface 111 and the second surface 112. The frame 13 protrudes from the first surface 111 at one part and protrudes from the second surface 112 at another part. The part of the frame 13 protruding from the first surface 111 forms a first accommodating groove with the middle plate 11, which is used to accommodate a battery, a circuit board, a camera, a speaker and the like; the back cover 30 covers the first accommodating groove and is opposite to the first surface 111 with a space. The first surface 111 can be a plane or a non-plane. Due to the size difference and shape difference of the electronic devices accommodated in the first accommodating groove, the first surface 111 is usually a non-plane, which can have concave parts or convex parts. For example, a battery groove is concavely arranged on the first surface 111. The part of the frame 13 protruding from the second surface 112 forms a second accommodating groove with the middle plate 11; the second accommodating groove is used to mount the display screen 20. When the display screen 20 is mounted in the second accommodating groove, the back surface 21 faces the second surface 112.

[0044] Please refer to FIG. 3 and FIG. 4 together, FIG. 4 is a cross-sectional view of the partial structure of the middle frame of the electronic device shown in FIG. 2; the middle frame 10 further comprises a key groove (not marked in the figure) and a mounting groove 15. The key groove is arranged adjacent to the mounting groove 15 along the width direction of the middle frame. The mounting groove 15 is recessed from the first surface 111 to the second surface 112. In the embodiment, the mounting groove 15 is a strip-shaped groove, which extends along the length direction of the middle plate 11. The mounting groove 15 is provided with a mounting groove wall 151, which faces the frame 13; the mounting groove wall 151 is used to fix the key module 46. The slot opening of the mounting groove 15 is located on the first surface 111. In the embodiment, the mounting groove 15 is used to accommodate the key module 46, which has certain requirements for the volume and the size of the slot opening, so it is arranged on the side of the middle frame 10 used to mount the back cover 30, so as to avoid affecting the flatness of the display screen 20 due to the large slot opening of the mounting groove.

[0045] The part of the first surface between the mounting groove 15 and the frame 13 constitutes the spacing between the mounting groove 15 and the frame 13, and the width of the spacing usually does not have structures such as grooves which reduce the strength and area of the middle plate 11. In the embodiment, the size of the spacing H is greater than or equal to 0.8 mm.

[0046] The key slot is used to install the key body 41. The key slot includes the accommodating slot part 14 and the clamping slot part 16. The accommodating slot part 14 is communicated with the clamping slot part 16, and the mounting slot 15 and the clamping slot part 16 are spaced from each other. The clamping slot part 16 and the mounting slot 15 are arranged on the middle plate 11.

[0047] The accommodating slot part 14 is recessed from the appearance surface 131 of the frame 13 to the middle frame 10, and the slot opening 140 of the accommodating slot part 14 is arranged on the appearance surface 131. The accommodating slot 14 in the embodiment is a long strip-shaped groove, which can accommodate the key body 41 and ensure that the surface gap between the key body 41 and the slot wall of the accommodating slot part 14 is within the tolerance range. The accommodating slot part 14 includes a slot bottom wall 141, and the direction of the slot bottom wall 141 is the same as or substantially the same as the direction of the appearance surface 131 of the frame 13. In the embodiment, the mounting slot wall 151 and the slot bottom wall 141 have the same direction, and the slot wall of the mounting slot 15 opposite to the mounting slot wall 151 is arranged in the opposite direction to the slot bottom wall 141.

[0048] The slot bottom wall 141 is provided with a limiting recess 142 for limiting the limiting body 413 of the key. The slot bottom wall 141 is also provided with two through holes 143 located on opposite sides of the limiting recess 142. Along the length direction of the accommodating slot part 14, the two through holes 143 are located on opposite sides of the limiting recess 142. The through hole 143 penetrates the slot bottom wall 141 and the slot wall of the mounting slot 15 and is communicated with the mounting slot 15; the through hole 143 is used for the key switch of the key module 46.

[0049] In the embodiment, the clamping slot part 16 is two and corresponds to the two connecting parts 42. The two clamping slot parts 16 are arranged spaced apart along the length direction of the middle frame 10, and the two clamping slot parts 16 are close to the inner surface 411 of the frame 13, specifically close to the connecting part of the inner surface 411 and the second surface 112.

[0050] The clamping slot part 16 is recessed from the second surface 112 to the first surface 111, and the slot opening 160 of the clamping slot part 16 is located on the second surface 112 and close to the inner surface 411. The clamping slot part 16 includes a clamping wall 161, and the wall surface of the clamping wall 161 is arranged in the opposite direction to the wall surface of the slot bottom wall 141 of the accommodating slot part 14. It can be understood that the clamping wall 161 is part of the slot bottom wall 141. In the length direction of the frame, the two through holes 143 are located between the two clamping slot parts 16.

[0051] The clamping wall 161 of the clamping slot part 16 is provided with two assembly holes 162. The assembly hole 162 penetrates the clamping wall 161 and the slot bottom wall 141 of the accommodating slot part 14. One end of the assembly hole 162 is located on the wall surface of the slot bottom wall 141, and the other end is located on the wall surface of the clamping wall 161. The assembly hole 162 is communicated with the accommodating slot part 14 and the clamping slot part 16.

[0052] It can be understood that the clamping groove portion 16 is formed on the groove bottom wall 141 in the thickness direction of the middle plate 11. The clamping groove portion 16 communicates with the accommodating groove portion 14 through the assembly hole. The two through holes 143 on the groove bottom wall 141 are completely staggered with the two clamping groove portions 16. The mounting groove 15 is located on the side of the clamping groove portion 16 away from the frame 13, and actually along the width direction of the middle frame 10, the clamping groove portion 16 is located between the mounting groove 15 and the accommodating groove portion 14.

[0053] Along the length direction of the middle frame 10, the clamping groove portion 16 is completely staggered with the mounting groove 15, and along the width direction of the middle frame 10, the clamping groove portion 16 is partially or completely overlapped with the mounting groove 15. The clamping groove portion 16 and the mounting groove 15 are provided with a spacing portion 17. In this embodiment, the spacing portion 17 is another groove wall of the clamping groove portion 16, which is opposite to the clamping wall 161. In fact, the spacing portion is also a part of the groove side wall of the mounting groove 15. In the width direction of the middle frame, the clamping groove portion 16 and the mounting groove 15 are spaced by the spacing portion 17 and there is no communication area.

[0054] In this embodiment, the accommodating groove portion 14, the mounting groove 15 and the clamping groove portion 16 can be formed by a CNC machining process, and the openings of the mounting groove 15 and the clamping groove portion 16 are respectively formed on the first surface 111 and the second surface 112, that is, the mounting groove 15 and the clamping groove portion 16 are machined from the first surface 111 and the second surface 112 respectively; the mounting groove 15 and the clamping groove portion 16 are staggered and not a through groove, so as to reduce the influence on the strength of the middle plate 11.

[0055] As shown in FIG. 2, the electronic device 100 includes a first sealant layer 50 and a second sealant layer 60. The first sealant layer 50 and the second sealant layer 60 can be caulking or double-sided tape. It should be noted that the first sealant layer 50 and the second sealant layer 60 also belong to caulking, which can fill the gap between the back cover and the display screen and the frame after the display screen is assembled. Along the length or width direction of the middle frame, the first sealant layer 50 and the second sealant layer 60 can be discontinuous, such as two pieces of adhesive layers abutting.

[0056] The first sealant layer 50 can be a ring-shaped adhesive layer or a sheet-shaped adhesive layer. The second sealant layer 60 is a ring-shaped adhesive layer. The first sealant layer 50 and the second sealant layer 60 have a bonding function and also have a protection function such as waterproof and dustproof. In one embodiment, the first sealant layer 50 includes a first part 50a and a second part 50b, which can be an integral structure or separated. The first part 50a and the second part 50b connect the display screen 20 and the middle frame 10. The second sealant layer 60 is used to connect the back cover 30 and the middle frame 10.

[0057] Please refer to Figs. 5 and 6 as well, Fig. 5 is a schematic cross-sectional view of part of the structure of the electronic device shown in Fig. 1 from one angle; Fig. 6 is a schematic cross-sectional view of part of the structure of the electronic device shown in Fig. 1 from another angle.

[0058] The electronic device 100 further comprises a sealing layer 70, which is a sealing film layer. In this embodiment, the sealing layer 70 is a Mylar film. In one embodiment, the sealing layer 70 comprises a body part 70a and an extension part 70b, which are connected. In one embodiment, the sealing layer 70 only comprises the body part 70a.

[0059] The key 40 is mounted on the middle frame 10, and the key module 46 is fixed on the mounting groove wall 151 of the mounting groove 15, and two key switches 461 of the key module 46 respectively extend into the accommodating groove part 14 through two through holes 143. A sealing structure, such as a sealing ring (not marked in the figure), is arranged between the key switch 461 and the through hole 143, which can prevent foreign matter and moisture from entering the mounting groove 15 through the through hole 143, thereby avoiding affecting the key module 46. The key body 41 of the key 40 is accommodated in the accommodating groove part 14, the inner surface 411 faces the groove bottom wall 141 of the accommodating groove part 14, the limiting body 413 of the key body 41 faces the limiting recess part 142, and the two connecting parts 42 respectively face the two assembly holes 162, and the two abutting tables 415 respectively face the two through holes 143. The outer surface 412 of the key body 41 is pressed into the accommodating groove part 14 to push the key body 41, the clamping flange 422 of the connecting part 42 is extruded to be elastically deformed by the groove bottom wall 141 around the assembly hole 162 to extend into the assembly hole 162, and the key body 41 is continuously pushed until the clamping flange 422 passes through the assembly hole 162; at this time, the limiting body 413 abuts against the limiting recess part 142, and the two key switches 461 respectively abut against the abutting table 415 on the key body 41. After the clamping flange 422 passes through the assembly hole 162, it is accommodated in the clamping groove part 16, and the deformed clamping flange 422 elastically recovers to the original state, and in the width direction of the middle frame 10, the clamping flange 422 is clamped on the clamping wall 161 around the assembly hole 162, thereby connecting the key body to the middle frame 10. When the key body 41 is pressed, the limiting body 413 will move into the accommodating groove part 14 to abut against the limiting recess part 142, and the limiting body 413 will be deformed and compressed; until the abutting table 415 presses and activates the key switch 461. After the external pressing force is removed, the elastic restoring force of the limiting body 413 restores the key body 41 to the original position. In this embodiment, the key 40 can realize the installation, pressing and resetting of the key 40 through the elastic clamping flange 422 and the limiting body 413; and it is not necessary to provide a complex resetting structure on the key or the accommodating groove part 14; the key structure of this embodiment is simple and convenient to assemble, and can reduce the production cost.

[0060] The sealing layer 70 is stacked and connected between the second surface 112 and the inner side surface 132 of the frame 13 and the display screen. The sealing layer 70 seals the slot of the two clamping groove portions 16 of the second surface 112. The body portion 70a is connected to the connection between the second surface 112 and the inner side surface 132 of the frame 13 and covers the slot of the clamping groove portion 16, and the extension portion 70b is connected to the second surface 112 on the side of the clamping groove portion 16 away from the frame 13. The effective width A of the body portion 70a connected to the middle frame is greater than or equal to 0.8 mm. The effective width B of the extension portion 70b connected to the second surface 112 is greater than or equal to 0.8 mm, wherein the effective width refers to the width of the effective bonding area, and the width of the body portion 70a covering the slot of the clamping groove portion 16 is the ineffective width.

[0061] The display screen 20 is mounted in the second accommodating groove portion, the first sealing adhesive layer 50 is arranged between the middle frame 10 and the display screen, the second portion 50b of the first sealing adhesive layer 50 is connected between the periphery of the back surface 21 of the display screen 20 and the second surface 112, and the first portion 50a is connected between the side surface of the display screen 20 and the inner side surface 132 of the frame 13. Specifically, the portion of the first sealing adhesive layer 50 opposite to the sealing layer 70 is directly connected to the surface of the sealing layer 70. The first sealing adhesive layer 50 can connect the display screen 20 and the middle frame 10, and can also seal the gap between the display screen 20 and the frame 13, especially the gap between the frame 13 and the side surface of the display screen 20.

[0062] Please refer to FIG. 7, which is a schematic diagram of the partial structure of the electronic device shown in FIG. 6 from another angle. In this embodiment, the first portion 50a and the second portion 50b of the first sealing adhesive layer 50 are arranged separately, avoiding the sealing of the slot of the clamping groove portion 16; the first portion 50a is stacked with the sealing layer 70. The first sealing adhesive layer 50 can prevent impurities such as water vapor and dust from entering the back surface of the display screen through the gap indicated by the arrow b shown in FIG. 7. Further, it avoids the entry of external water vapor and dust into the display screen 20 and the middle frame 10. At the same time, the first portion 50a prevents the entry of the clamping groove portion 16 through the assembly hole 162. It can be understood that the sealing structure of the display screen 20 and the middle frame 10 is utilized, that is, the waterproof of the display screen 20 and the middle frame 10 is realized, and the protection of the accommodating groove portion 14 and the clamping groove portion 16 is realized, which simplifies the sealing structure and saves the processing technology.

[0063] Further, the sealing layer 70 and the first sealing layer 50 overlap each other by a width of 0.8 cm or more, further sealing the gap between the display screen and the frame 13, and improving the sealing performance of the clamping groove portion 16. In this way, no waterproof structure is needed between the key body and the connecting portion 42, and even if water vapor and impurities enter the key body and the key groove, they will not enter the middle frame through the clamping groove portion. Further, the clamping groove portion 16 of the present embodiment is spaced apart from the mounting groove 15 by the spacing portion 17, and water vapor and dust impurities will not enter the mounting groove 15 through the clamping groove portion 16, indirectly improving the sealing performance of the mounting groove.

[0064] The rear shell 30 is mounted on the middle frame 10, and the rear shell 30 is connected to the frame 13 and seals the first accommodating groove. The second sealing layer 60 is connected to the periphery of the inner surface of the rear shell 30 and the periphery of the first surface 111, thereby connecting the rear shell 30 to the middle frame 10. The rear shell 30 and the frame 13 can also be sealed by dispensing glue. The second sealing layer 60 can connect the rear shell 30 and the middle frame 10, and can also seal the gap between the rear shell 30 and the middle frame 10, preventing water vapor and dust from entering the gap between the rear shell 30 and the middle frame 10. The second sealing layer 60 is connected to the first surface 111 between the mounting groove 15 and the frame 13. The area between the mounting groove 15 and the frame 13 covers the clamping groove portion 16 in the thickness direction of the middle frame 10, but no opening is provided in this area; therefore, the width of this area is large, and the width of the second sealing layer 60 located in the spacing is greater than or equal to 0.8 mm. The second sealing layer 60 between the mounting groove 15 and the frame 13 has a large bonding area with the first surface 111, thereby increasing the sealing area between the mounting groove 15 and the frame 13, and ensuring the sealing performance of the rear shell 30 and the middle frame 10. Further, it effectively prevents water vapor and dust from entering the mounting groove 15 through the gap between the frame 13 and the rear shell 30 indicated by the arrow a in FIG. 7, thereby improving the protection performance of the key module 46. In one embodiment, the second sealing layer 60 extends along the width direction thereof, and can cover the slot opening of the mounting groove 15. In addition, only a through hole is provided between the key groove and the mounting groove 15, thereby greatly reducing the gap between the key and the middle frame, and improving the sealing performance of the key. A glue layer can also be provided between the rear shell 30 and the middle frame 10 at other positions.

[0065] In one embodiment, the switch key and the volume key of the electronic device are arranged adjacent to each other, and the key module of the switch key can be arranged in the mounting groove 15, that is, the length of the mounting groove 15 is extended, thereby saving the process of slotting. The second sealing layer 60 also covers the position of the key module of the switch key, and no additional waterproof structure is needed, thereby further improving the sealing performance of the corresponding position of the switch key.

[0066] The connecting part 42 of the key of the embodiment is inserted into the accommodating groove part 14 by extrusion deformation mode, the key and the surrounding of the accommodating groove part 14 are not provided with sealing structure, and the structure is simple. The clamping groove part 16 and the mounting groove 15 are spaced by the spacing part, impurities are prevented from entering the mounting groove 15 through the clamping groove part, the sealing performance of the mounting groove 15 is improved, and the slot of the clamping groove part 16 of the embodiment is opened on the side of the middle frame 10 facing the display screen 20, the sealing is realized through the sealing of the display screen 20, and the sealing strength of the display screen 20 and the middle frame 10 is relatively high, so the sealing performance of the clamping groove part 16 is improved. At the same time, the spacing between the mounting groove 15 and the frame 13 is increased, the sealing area of the side of the middle frame 10 facing the rear shell 30 is increased, and the sealing performance of the mounting groove 15 is improved.

[0067] The above has carried out the detailed introduction to the embodiment of the application, the principle and the implementation mode of the application have been described in this paper by applying specific examples, the above embodiment is only used for helping understanding the method of the application and its core idea; at the same time, for the general technical personnel in the art, according to the idea of the application, the specific implementation mode and the application range will have the change, and the above is described, the content of the specification should not be understood as the limitation of the application.

Claims

1. An electronic device, characterized in that, The electronic device includes a mid-frame, a display screen, and buttons. The button includes a button switch, a button body, and a connecting part, wherein the connecting part protrudes from the surface of the button body; The middle frame includes a middle plate and a side frame. The middle frame includes a first surface and a second surface disposed opposite to the first surface. The side frame includes an outer surface and an inner surface disposed opposite to the outer surface. The side frame is connected to the periphery of the middle plate. The inner surface is connected to both the first surface and the second surface. The middle frame also includes a mounting groove and a button groove, the mounting groove and the button groove being spaced apart, and the mounting groove being recessed from the first surface toward the second surface; The button slot includes a receiving slot and a retaining slot. The receiving slot is recessed from the outer surface to the inner surface, and the retaining slot is recessed from the second surface to the first surface. The receiving slot and the retaining slot are connected, and the retaining slot and the mounting slot are separated by a spacer. The button body is housed in the receiving groove. The connecting portion is deformable and passes through the bottom wall of the receiving groove to engage with the retaining groove. The button switch is housed in the mounting groove, and extends through the bottom wall of the receiving groove into the receiving groove to abut against the button body. The button switch and the connecting portion are spaced apart along the length of the frame. The display screen is stacked on the second surface, and the peripheral side of the display screen is sealed to the inner side of the frame by a first sealant layer.

2. The electronic device according to claim 1, characterized in that, A sealing layer is also provided at the connection between the inner side of the frame and the second surface. The sealing layer connects the first sealing layer and the middle frame, and the edge of the sealing layer away from the frame is connected to the edge of the slot of the retaining groove.

3. The electronic device according to claim 2, characterized in that, The sealing layer further includes an extension that covers the slot of the retaining groove on the second surface.

4. The electronic device according to claim 1, characterized in that, The electronic device also includes a rear shell, and along the thickness direction of the middle frame, the orthographic projection of the retaining groove is entirely located within the portion of the first surface between the mounting groove and the frame. The electronic device further includes a second sealant layer, the rear shell is mounted on the middle frame and covers the first surface, and the second sealant layer connects the periphery of the inner surface of the rear shell with the first surface between the mounting groove and the frame.

5. The electronic device according to claim 4, characterized in that, The second sealant layer covers the groove of the mounting groove located on the first surface.

6. The electronic device according to claim 4, characterized in that, Along the width direction of the middle frame, the width of the second sealant layer is greater than or equal to 0.8 mm.

7. The electronic device according to claim 2, characterized in that, Along the width direction of the middle frame, the width of the sealing layer is greater than or equal to 0.8 mm.

8. The electronic device according to claim 3, characterized in that, Along the width direction of the middle frame, the width of the extension is greater than or equal to 0.8 mm.

9. The electronic device according to any one of claims 1-8, characterized in that, The retaining groove includes a retaining wall with an assembly hole that penetrates both the retaining wall and the bottom wall of the receiving groove. The retaining wall is spaced apart from and opposite to the spacer portion. The connecting part includes a body and a retaining flange that connects to the body. The retaining flange includes two sub-flanges that extend along the width direction of the button body and protrude from the body. The retaining flange is elastically deformable. The button body is housed in the receiving groove. The two sub-flanges are squeezed and deformed through the assembly hole, and after the two sub-flanges extend into the retaining groove, they elastically return to their original shape and are engaged with the groove wall of the retaining groove.

10. The electronic device according to claim 9, characterized in that, The surface of the button body is also provided with protrusions, and the body connects to and wraps around the protrusions. The hardness of the connecting part is less than that of the protrusions and the button body.

11. The electronic device according to claim 1, characterized in that, The first sealant layer is also connected between the display screen and the second surface.

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