An electronic device

Abstract

This application relates to the field of waterproofing technology, specifically to an electronic device. The electronic device includes: a middle frame with holes, a display screen and a circuit board mounted on opposite sides of the middle frame, a flexible circuit board, and a sealing portion; a wiring channel is formed between the sealing portion and a portion of the hole wall, and is sealed to the remaining hole wall; the flexible circuit board passes through the wiring channel, with its two ends electrically connected to the display screen and the circuit board respectively, and is sealed to the channel wall, preventing water from flowing from one side of the middle frame to the other through the wiring channel. The electronic device of this application has improved waterproofing capabilities.

Description

Technical Field

[0001] This application relates to a waterproof electronic device. Background Technology

[0002] Foldable phones with foldable screens are becoming increasingly common, with various manufacturers releasing multiple models. The connection between the screen and circuit board in a foldable phone is typically achieved through a flexible printed circuit (FPC) that runs through the mid-frame. A gap exists where the FPC passes through the mid-frame. Since the edges of the screen and mid-frame of a candybar phone are waterproofed using adhesive to isolate the gap from the outside environment, this gap is generally not waterproofed. However, foldable phones have both an outer and inner screen, and the inner screen shifts during the folding process, making traditional edge sealing methods for waterproofing impossible. Summary of the Invention

[0003] An embodiment of this application provides an electronic device that is waterproof.

[0004] To achieve the above objectives, the embodiments of this application adopt the following technical solutions:

[0005] In a first aspect, this application provides an electronic device, comprising: a middle frame with holes, a display screen and a circuit board mounted on opposite sides of the middle frame, a flexible circuit board, and a sealing part; a wire passage is formed between the sealing part and a portion of the hole wall, and is sealed to the remaining hole wall; the flexible circuit board passes through the wire passage, and its two ends are electrically connected to the display screen and the circuit board respectively, and is sealed to the channel wall of the wire passage, so that water cannot flow from one side of the middle frame to the other side through the wire passage.

[0006] According to the embodiments of this application, the wiring channel and the flexible circuit board are sealed together, and the remaining parts of the hole, except for the wiring channel, are also sealed, preventing water from flowing from one side of the mid-frame to the other through the wiring channel. That is, water cannot flow between the display screen and the circuit board through the wiring channel. This achieves a waterproof design at the hole location on the mid-frame, improving the waterproof capability of the foldable phone.

[0007] In one possible implementation of the first aspect described above, the portion of the sealing part adjacent to a portion of the hole wall and forming a wire passage is supported on the circuit board, and the remaining portion of the sealing part is sealed to the remaining hole wall of the hole.

[0008] In one possible implementation of the first aspect described above, the flexible circuit board includes a surface and another surface located on opposite sides, one surface facing a portion of the hole wall, and the other surface facing the sealing portion; a first seal is bonded between the one surface and a portion of the hole wall, and the other surface is interference-fitted with the sealing portion by an elastic support.

[0009] In one possible implementation of the first aspect described above, the elastic support is bonded to the sealing portion and abuts against another surface with an interference fit.

[0010] In one possible implementation of the first aspect mentioned above, the elastic support is foam.

[0011] In one possible implementation of the first aspect described above, the first seal is an adhesive backing.

[0012] In one possible implementation of the first aspect described above, the sealing portion is bonded to the remaining hole wall of the hole with a second sealing element to achieve a sealed connection.

[0013] In one possible implementation of the first aspect described above, the second seal is an adhesive backing.

[0014] In one possible implementation of the first aspect described above, the cable passage includes an inclined section adjacent to the display screen and inclined in a direction toward the display screen facing the blocking portion.

[0015] In one possible implementation of the first aspect described above, a portion of the hole wall includes a hole inclined surface, and the sealing portion includes a sealing inclined surface, with the hole inclined surface and the sealing inclined surface forming an inclined section portion.

[0016] In one possible implementation of the first aspect described above, the inclined plane of the hole is parallel to the inclined plane of the sealing.

[0017] In one possible implementation of the first aspect described above, the trace passage further includes a straight section adjacent to the circuit board.

[0018] In one possible implementation of the first aspect mentioned above, the hole wall further includes a hole straight surface, and the sealing part further includes a sealing straight surface, with the hole straight surface and the sealing straight surface forming a straight section of the wire passage.

[0019] In one possible implementation of the first aspect mentioned above, the hole face is parallel to the sealing face.

[0020] In one possible implementation of the first aspect above, the sealing part includes: a sealing plate and a sealing block, wherein one end of the sealing plate adjacent to a portion of the hole wall is connected to the sealing block, and the extending direction of the sealing block is consistent with the extending direction of a portion of the hole wall.

[0021] The sealing block of the sealing part forms a wire passage between itself and part of the hole wall, and the sealing plate of the sealing part is sealed to the remaining hole wall.

[0022] In one possible implementation of the first aspect described above, the remaining walls of the hole are provided with bosses, which are parallel to the sealing plate and are sealed together by a sealing element.

[0023] In one possible implementation of the first aspect described above, one end of the sealing plate is embedded within the sealing block.

[0024] In one possible implementation of the first aspect described above, the sealing plate includes a first part and a second part arranged at an obtuse angle. The first part of the sealing plate is inclined toward the circuit board and embedded in the sealing block. The second part of the sealing plate is parallel to the circuit board and is bonded with a second seal between itself and the remaining hole wall of the hole.

[0025] In one possible implementation of the first aspect described above, the hole is cubic in shape, and the hole wall comprises four hole walls, with a portion of the hole wall being one of the hole walls and the remaining hole walls comprising the remaining three hole walls.

[0026] In one possible implementation of the first aspect mentioned above, the second part of the blocking part is in the shape of a cuboid.

[0027] In one possible implementation of the first aspect mentioned above, the sealing plate is a rigid body.

[0028] In one possible implementation of the first aspect described above, the hard body is a metal.

[0029] In one possible implementation of the first aspect described above, the sealing block is formed by injection molding liquid silicone onto the sealing plate.

[0030] In one possible implementation of the first aspect described above, the two ends of the sealing block in the extension direction are interference-fitted with the hole wall. Attached Figure Description

[0031] Figure 1 A three-dimensional representation of the mid-frame of an electronic device is shown according to some embodiments of this application. Figure 1 ;

[0032] Figure 2 A cross-sectional view of the mid-frame of an electronic device is shown according to some embodiments of this application. Figure 1 ;

[0033] Figure 3 yes Figure 2 Enlarged view of section A;

[0034] Figure 4 A three-dimensional representation of the mid-frame of an electronic device is shown according to some embodiments of this application. Figure 2 ;

[0035] Figure 5 A three-dimensional representation of the mid-frame of an electronic device is shown according to some embodiments of this application. Figure 3 ;

[0036] Figure 6 A three-dimensional representation of the mid-frame of an electronic device is shown according to some embodiments of this application. Figure 4 ;

[0037] Figure 7 yes Figure 6 Enlarged view of section B;

[0038] Figure 8 A cross-sectional view of the mid-frame of an electronic device is shown according to some embodiments of this application. Figure 2 ;

[0039] Figure 9 yes Figure 8 Enlarged view of section C;

[0040] Figure 10 A cross-sectional view of the mid-frame of an electronic device is shown according to some embodiments of this application. Figure 3 ;

[0041] Figure 11 yes Figure 10 Enlarged view of section D;

[0042] Figure 12 A partial enlarged view of the mid-frame of an electronic device is shown according to some embodiments of this application;

[0043] Figure 13 A three-dimensional representation of the sealing portion of an electronic device is shown according to some embodiments of this application. Figure 1 ;

[0044] Figure 14 A three-dimensional representation of the sealing portion of an electronic device is shown according to some embodiments of this application. Figure 2 ;

[0045] Figure 15 A cross-sectional view of the sealing portion of an electronic device is shown according to some embodiments of this application;

[0046] Figure 16 A three-dimensional representation of the mid-frame of an electronic device is shown according to some embodiments of this application. Figure 5 ;

[0047] Figure 17 yes Figure 16 Enlarged view of section E in the middle. Detailed Implementation

[0048] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0049] This application provides an electronic device in which a sealing portion is used to seal the flexible circuit board at the location where it passes through the middle frame of the electronic device, thereby achieving waterproofing.

[0050] The technical solution of this application can be applied to electronic devices including, but not limited to, foldable mobile phones, foldable tablets, foldable computers, wearable devices (such as smartwatches), in-vehicle computers, portable multimedia players, navigation devices, desktop computers, televisions, and any device with a mid-frame, a display screen and a circuit board located on opposite sides of the mid-frame, and a flexible circuit board. The flexible circuit board passes through the mid-frame and connects to the display screen and the circuit board respectively.

[0051] For ease of explanation, the following description uses a foldable mobile phone as an example. The electronic device of this application will be described below with specific embodiments.

[0052] Figure 1 A perspective view of the mid-frame 1 of a foldable phone is shown. The foldable phone includes the mid-frame 1. Figure 1 The image shows one of the mid-frames 1 of a foldable phone. The mid-frame 1 has holes 101 for the circuit board to pass through.

[0053] This application does not limit the specific structure of the middle frame 1; for example, refer to... Figure 2 , Figure 2 A side view of the mid-frame 1 of the foldable phone is shown. Figure 3 It shows Figure 2 An enlarged view of section A. (See image below.) Figure 2 As shown, the foldable phone of this application has a partition 10, an upper mounting cavity 11, and a lower mounting cavity 12 in its middle frame 1. Along the thickness direction of the middle frame 1 ( Figure 2 (As shown in the Z-direction), the upper mounting cavity 11 and lower mounting cavity 12 of the middle frame 1 are located on opposite sides of the partition 10. (Reference) Figure 3 The partition 10 of the middle frame 1 is provided with holes 101 for the circuit board to pass through.

[0054] For example, refer to Figure 4 The upper mounting cavity 11 houses the display screen 2. (Reference) Figure 5 The lower mounting cavity 12 houses the circuit board 3. That is, the display screen 2 and the circuit board 3 are mounted on opposite sides of the middle frame 1, respectively. Exemplarily, an adhesive material (such as foam adhesive) can be used to attach the display screen 2 and the circuit board 3 to opposite sides of the partition 10 of the middle frame 1. However, the connection method between the middle frame 1, the display screen 2, and the circuit board 3 is not limited to using an adhesive material; any method that enables assembly is acceptable.

[0055] refer to Figure 6 and Figure 7 , Figure 6 A perspective view of the cross-sectional view of the mid-frame 1 of the foldable phone is shown. Figure 7 It shows Figure 6 Enlarged view of section B. The flexible circuit board 4 passes through the hole 101 in the partition 10 of the middle frame 1, and its two ends are electrically connected to the display screen 2 and the circuit board 3, respectively. (See diagram below.) Figure 7 As shown, there will be a gap at the location where the flexible circuit board 4 passes through the hole 101 of the middle frame 1. The inner screen of the foldable phone may shift during the folding process, and there is a possibility of water leakage at this gap.

[0056] Therefore, a waterproof design is required. However, the hole 101 in the middle frame 1 through which the flexible circuit board 4 passes is a non-circular hole with a rather unusual shape. The flexible circuit board 4 is flexible, and its strength is insufficient to support the complete adhesion of the waterproof material, making it impossible to achieve waterproofing using traditional edge sealing methods.

[0057] To address this issue, this application proposes a waterproofing solution for perforations in flexible circuit boards. This solution utilizes sealing elements at the holes in the partition of the mid-frame to enhance the waterproofing capability of the foldable phone.

[0058] The structure of the sealing section and the specific waterproofing scheme are described in detail below with reference to the attached diagram.

[0059] In some possible implementations, refer to Figure 8 and Figure 9 In this application, a sealing part 5 is provided at the position of the hole 101 on the partition plate 10 of the middle frame 1 of the foldable mobile phone. The sealing part 5 forms a wire passage 10111 with a part of the hole wall 1011 of the hole 101, and is sealed to the remaining hole wall 1012 of the hole 101. That is, after the sealing part 5 is provided in the hole 101 of the middle frame 1, the rest of the hole 101 is sealed by the sealing part 5 except for the wire passage 10111. In other words, the sealing part 5 blocks a part of the hole 101, and the part of the hole 101 that is not blocked by the sealing part 5 is the aforementioned wire passage 10111, through which the flexible circuit board 4 passes.

[0060] refer to Figures 10 to 12 , Figure 10 A side view of the middle frame 1 is shown. Figure 11 It shows Figure 10 An enlarged view of section D. Figure 12 yes Figure 11 A structural diagram from a three-dimensional perspective.

[0061] like Figure 11 and Figure 12 As shown, the flexible circuit board 4 passes through the cable guide channel 10111 ( Figure 11 and Figure 12 After the cable passage 10111 (not shown), both ends of the flexible circuit board 4 are electrically connected to the display screen 2 and the circuit board 3 on opposite sides of the partition plate 10, respectively, and are sealed to the channel wall of the cable passage 10111. That is, the flexible circuit board 4 is respectively connected to... Figure 9The wall surface of the hole 1011 shown above and the wall surface of the portion of the sealing part 5 that forms the wire passage 10111 are sealed together. The specific sealing method will be described in detail later.

[0062] The wiring channel 10111 is sealed to the flexible circuit board 4, and the remaining portion of the hole 101, except for the wiring channel 10111, is also sealed by the sealing part 5, preventing water from flowing from one side of the middle frame 1 to the other through the wiring channel 10111. For example, water cannot flow from one side of the partition 10 of the middle frame 1 to the other through the wiring channel 10111. That is, water cannot flow between the display screen 2 and the circuit board 3 through the wiring channel 10111. This waterproof design at the location of the hole 101 on the partition 10 of the middle frame 1 improves the waterproof capability of the foldable phone.

[0063] This application does not limit the specific structure of the sealing part 5. Any structure that can partially seal the hole 101 on the partition 10 of the middle frame 1 and form the above-mentioned wire passage 10111 with part of the hole wall 101 on the partition 10 of the middle frame 1 is within the protection scope of this application.

[0064] For example, the hole 101 on the partition 10 of the middle frame 1 through which the flexible circuit board 4 passes is cubical in shape. The hole 101 has four walls. The aforementioned partial hole wall 1011 is one of the holes of the hole 101, and the aforementioned remaining hole walls 1012 include the remaining three holes. One of the holes (the aforementioned partial hole wall 1011) is the hole wall that is attached to the flexible circuit board 4, and the remaining three holes are the hole walls that are not attached to the flexible circuit board 4. However, the number of holes of the hole 101 in this application is not limited to four; for example, the number of holes of the hole 101 may be five, six, etc. The following description uses a hole 101 with four holes as an example.

[0065] Accordingly, the sealing part 5 is generally cuboid in shape. (Reference) Figure 13 and Figure 14 The sealing portion 5 of this application includes a sealing plate 50 and a sealing block 51. One end of the sealing plate 50 adjacent to a portion of the hole wall 1011 of the hole 101 is connected to the sealing block 51. That is, the sealing plate 50 is adjacent to a portion of the hole wall 1011 of the hole 101. For example, refer to... Figures 13 to 14 The extending direction of the aforementioned sealing block 51 ( Figure 13 and Figure 14 (As shown in the X direction) and the extension direction of part of the hole wall 1011 of the hole 101 are consistent. Combined with Figure 9As shown, the sealing block 51 of the sealing part 5 is supported on the circuit board 3, forming the aforementioned wire passage 10111 between it and a portion of the hole wall 1011 of the hole 101. The extending direction of the wire passage 10111 is consistent with the extending direction of the sealing block 51. The sealing block 51, supported on the circuit board 3, can provide support for the sealing element (adhesive backing described later) of the flexible circuit board 4.

[0066] In this application, the sealing plate 50 is a metal steel sheet, and the sealing block 51 is liquid injection molded silicone. The sealing block 51 is formed by injection molding liquid silicone onto the sealing plate 50. That is, the liquid injection molded silicone is directly injection molded together with the steel sheet. Figure 15 As shown, the sealing plate 50 is embedded within the sealing block 51. However, this application does not specify the specific material of the sealing plate 50; for example, the sealing plate 50 may be a rigid body made of other metals. The shapes of the sealing plate 50 and the sealing block 51 are not limited to these; any structure capable of sealing the holes 101 in the middle frame 1 falls within the protection scope of this application. In some possible embodiments, the sealing plate 50 and the sealing block 51 may be integrally molded from the same material (e.g., silicone).

[0067] For example, the dimensions of the flexible circuit board 4 in the extending direction of the sealing block 51 match the dimensions in the extending direction of the wiring channel 10111 to facilitate sealing and waterproofing. The flexible circuit board 4 passes through the wiring channel 10111 and achieves a sealed connection with a portion of the hole wall 1011 of the hole 101 and the sealing block 51, respectively. The sealing plate 50 of the sealing part 5 is sealed to the remaining hole walls 1012 (the remaining three hole walls) of the hole 101. That is, the side of the sealing part 5 with the sealing block 51 (the side with the flexible circuit board) is sealed to the flexible circuit board 4, and the side of the sealing part 5 with the sealing plate 50 (the side without the flexible circuit board) is sealed to the remaining hole walls 1012 (the remaining three hole walls) of the hole 101.

[0068] For example, refer to Figure 15 The aforementioned sealing plate 50 includes a first portion 501 and a second portion 502 set at an obtuse angle. Combined with... Figure 11 and Figure 12 The first portion 501 of the sealing plate 50 is inclined toward the circuit board 3 and embedded within the sealing block 51; the second portion 502 of the sealing plate 50 is parallel to the circuit board 3. Exemplarily, the second portion 502 of the sealing plate 50 is cuboid in shape to block a portion of the hole 101 on the partition 10 of the middle frame 1. Figure 13 As shown, the second part 502 of the sealing plate 50 includes a first end 5021, a second end 5022, and a third end 5023 connected in sequence. The first end 5021, the second end 5022, and the third end 5023 of the second part 502 of the sealing plate 50 correspond one-to-one with the remaining three hole walls 1012 of the hole 101.

[0069] Wherein, the first end 5021 and the third end 5023 of the second part 502 of the sealing plate 50 are along the length direction of the sealing plate 50 ( Figure 13 As shown in the X direction, they are spaced apart and arranged along the width direction of the sealing plate 50. Figure 13 (As shown in the Y direction). The second end 5022 of the second part 502 of the sealing plate 50 extends along the length direction of the sealing plate 50, is disposed opposite to the first part 501 of the sealing plate 50 along the width direction of the sealing plate 50, and is connected to the first end 5021 and the third end 5023 of the second part 502 of the sealing plate 50, respectively.

[0070] Continue to refer to Figure 14 and combined Figure 16 and Figure 17 As shown, Figure 16 A perspective view of the middle frame 1 from a cross-sectional perspective is shown. Figure 17 It shows Figure 16 Enlarged view of part E. The sealing block 51 described above has an elastic support 54 on the side of the hole wall 1011 facing the hole 101. The elastic support 54 is bonded to the side of the sealing block 51 facing the hole wall 1011 by a first adhesive 55. The elastic support 54 is, for example, foam. The second part 502 of the sealing plate 50 has a second adhesive 52 on the side facing the remaining hole wall 1012 of the hole 101. Specifically, the first end 5021, the second end 5022, and the third end 5023 of the sealing plate 50 each have a second adhesive 52 facing the remaining hole wall 1012 of the hole 101. Exemplarily, the second adhesive 52 and the sealing block 51 form a quadrilateral frame with an open top and a closed bottom to seal the portion of the hole wall 1011 of the hole 101.

[0071] The sealing and waterproofing methods of the sealing block 51 and the flexible circuit board 4 will be introduced below, that is, the waterproofing of the sealing part 5 with the flexible circuit board side will be introduced.

[0072] Continue to refer to Figure 11 The flexible circuit board 4 includes a first surface and a second surface located on opposite sides. The first surface of the flexible circuit board 4 is disposed facing a portion of the hole wall 1011 of the hole 101, and the second surface of the flexible circuit board 4 is disposed facing the sealing block 51 of the sealing portion 5. A third adhesive 53 is bonded between the first surface of the flexible circuit board 4 and the portion of the hole wall 1011 of the hole 101, that is, the first surface of the flexible circuit board 4 is bonded to the portion of the hole wall 1011 of the hole 101 by the third adhesive 53. This application does not limit the sealing material between the first surface of the flexible circuit board 4 and the portion of the hole wall 1011 of the hole 101 to adhesive; other sealing materials may also be used.

[0073] The second surface of the flexible circuit board and the sealing part 5 are interference-fitted by the aforementioned elastic support 54. The sealing block 51 supports the foam, and the circuit board 3 supports the sealing block 51, thereby providing a force to compress the foam and the flexible circuit board 4, pressing the flexible circuit board 4 against a portion of the hole wall 1011 of the hole 101 in the middle frame 1. This compresses the gap, thereby achieving waterproofing on the side of the sealing part 5 with the flexible circuit board 4.

[0074] The aforementioned elastic support 54 is bonded to the sealing block 51 by a first adhesive 55, and abuts against the second surface of the flexible circuit board 4 with an interference fit. The elastic support 54 can also be bonded to the sealing portion 5 by other structures. In some possible embodiments, the second surface of the flexible circuit board 4 is bonded with an elastic support 54 (e.g., foam) via an adhesive, and the elastic support 54 is in an interference fit with the sealing block 51.

[0075] The elastic support 54 mentioned above is not limited to foam, but can also be other structures, such as sponge.

[0076] In some possible embodiments, the aforementioned cable passage 10111 includes an inclined section adjacent to the display screen 2 and inclined in the direction toward the sealing portion 5. That is, the shape of a portion of the cable passage 10111 adjacent to the display screen 2 is similar to the shape of the curved flexible circuit board 4. This facilitates the passage of the flexible circuit board 4 through the inclined section of the cable passage 10111 after bending.

[0077] For example, refer to Figure 11 and Figure 17 The hole 101 has a portion of its wall 1011 including a hole ramp 10112, and the sealing block 51 includes a sealing ramp. The hole ramp 10112 and the sealing ramp form a ramped portion of the wiring channel 10111. Exemplarily, the hole ramp 10112 is parallel to the sealing ramp. The portion of the bent flexible circuit board 4 corresponding to the ramped portion of the wiring channel 10111 is parallel to both the hole ramp 10112 and the sealing ramp, facilitating the passage of the flexible circuit board 4 through the wiring channel 10111.

[0078] In some possible implementations, refer to Figure 9 and Figure 17The aforementioned wiring channel 10111 also includes a straight section that extends along the thickness direction of the middle frame 1. Exemplarily, a portion of the hole wall 1011 of the hole 101 also includes a hole straight surface 10113, and the sealing block 51 includes a sealing straight surface. The hole straight surface 10113 and the sealing straight surface form the straight section of the wiring channel 10111. Exemplarily, the hole straight surface 10113 is parallel to the sealing straight surface. The portion of the bent flexible circuit board 4 corresponding to the straight section of the wiring channel 10111 is parallel to both the hole straight surface 10113 and the sealing straight surface. In other words, one end of the flexible circuit board 4 is electrically connected to the display screen 2, and after passing through the inclined and straight sections of the wiring channel 10111, it is electrically connected to the circuit board 3.

[0079] Next, we will introduce the sealing and waterproofing methods of the sealing plate 50 and the remaining hole walls 1012 of the hole 101, that is, the waterproofing of the sealing part 5 without the flexible circuit board.

[0080] refer to Figure 12 and Figure 15 The second portion 502 of the sealing plate 50 of the sealing part 5 is bonded to the remaining hole walls 1012 (the three hole walls of the hole 101 other than the aforementioned partial hole walls 1011) of the hole 101 in the middle frame 1 by a second adhesive 52 to achieve a sealed connection. Exemplarily, the remaining hole walls 1012 of the hole 101 in the middle frame 1 include a first hole wall, a second hole wall, and a third hole wall. The first hole wall and... Figure 13 The first end 5021 of the sealing plate 50 shown corresponds to the second end 5021, and the two are bonded together by the second adhesive 52; the second hole wall and Figure 13 The second end 5022 of the sealing plate 50 shown corresponds to the second end 5022, and the two are bonded together by the second adhesive 52; the third hole wall and Figure 13 The third end 5023 of the sealing plate 50 shown corresponds to the second end 5023, and the two are bonded together by the second adhesive 52. After the second adhesive 52 is bonded together with the closed frame formed by the sealing block 51, the sealing plate 50 and the remaining hole walls 1012 of the hole 101 of the middle frame 1, a closed cavity is formed, eliminating the gaps here and achieving waterproofing.

[0081] The seal between the sealing plate 50 and the remaining hole wall 1012 of the hole 101 is not limited to adhesive backing, but may also be other seals.

[0082] In some possible implementations, refer to Figure 12 and Figure 17 The remaining walls 1012 of the hole 101 are provided with bosses, which are parallel to the sealing plate 50 and respectively connected to... Figure 13The first end 5021, the second end 5022, and the third end 5023 of the sealing plate 50 shown are parallel to each other. The boss and the sealing plate 50 are bonded together and sealed by the second adhesive 52. After the boss is set, it is convenient for the sealing plate 50 to be bonded to the remaining hole walls 1012 of the middle frame 1 by the second adhesive 52. That is, it is convenient to fix the sealing plate 50 of the sealing part 5 to the middle frame 1.

[0083] Therefore, the sealing part 5 of this application achieves waterproofing on both the flexible circuit board side and the non-flexible circuit board side, as well as the hole walls of the holes 101 on the partition 10 of the middle frame 1. The waterproofing on the flexible circuit board side of the sealing part 5 mainly relies on foam pressing the flexible circuit board 4 onto the middle frame 1, compressing the gap and thus achieving waterproofing. The flexible circuit board side of the sealing part 5 is fixed to the middle frame 1 and the sealing plate 50 using adhesive backing, simultaneously eliminating the gap and achieving waterproofing. The waterproofing capability of the entire hole 101 on the partition 10 of the middle frame 1 is improved.

[0084] In some possible implementations, at the location where the flexible circuit board side of the sealing portion 5 connects to the two side walls of the hole 101 (i.e., at the corner of the hole 101), the two ends of the extending direction of the sealing block 51 are interference-fitted with the hole wall of the hole 101. That is, the sealing at this location is achieved by the deformation of the sealing block 51 (liquid injection molded silicone).

[0085] For example, refer to Figure 13 The sealing block 51 has concave and convex portions 511 at both ends in the extending direction; Reference Figure 17 The corners of the side walls of the hole 101 in the middle frame 1 have protrusions and recesses 1015. The shapes of the protrusions and recesses 511 at both ends of the extending direction of the sealing block 51 match the shapes of the protrusions and recesses 1015 at the corners of the side walls of the hole 101 in the middle frame 1 to achieve a concave-convex fit. For example, the size of the protrusions and recesses 511 of the sealing block 51 is slightly larger, so as to achieve an interference fit with the protrusions and recesses 1015 on the hole wall of the hole 101 in the middle frame 1, thereby achieving waterproofing at this corner.

[0086] That is, the sealing part 5 of this application can achieve waterproofing of the holes 101 in the middle frame 1 in three aspects.

[0087] On the one hand, part of the hole wall 1011 of the hole 101 has waterproofing on the flexible circuit board side. The flexible circuit board 4 is pressed onto the middle frame 1 by the foam on the sealing block 51, which compresses the gap here and achieves waterproofing here.

[0088] On the other hand, the remaining three hole walls 1012 of the hole 101 are not waterproofed by the flexible circuit board side. The middle frame 1 and the sealing plate 50 are fixed by adhesive backing to eliminate the gaps here and achieve waterproofing at the remaining three hole walls 1012 of the hole 101.

[0089] Finally, at the locations where the two ends of the sealing block 51 in the extension direction connect with the two side walls of the hole 101, the sealing is achieved by interference fit between the two ends of the sealing block 51 in the extension direction and the hole wall of the hole 101.

[0090] In summary, this application achieves waterproofing of the inner screen of the foldable phone by setting a sealing part at the hole in the middle frame. The sealing part is, for example, a combination of adhesive, foam, steel sheet and liquid injection silicone, thereby controlling the gap between the flexible circuit board and the middle frame and improving the waterproofing capability of the foldable phone.

Claims

1. An electronic device, comprising: The electronic device is a foldable screen device, including: a middle frame with holes, a display screen and circuit board installed on opposite sides of the middle frame, a flexible circuit board, and a sealing part; The sealing part forms a wire passage between itself and part of the hole wall, and is sealed to the remaining hole wall; The flexible circuit board passes through the wiring channel, and its two ends are electrically connected to the display screen and the circuit board, respectively, and are sealed to the channel wall of the wiring channel. The flexible circuit board includes a first surface and a second surface located on opposite sides, the first surface facing the portion of the hole wall, and the second surface facing the sealing portion; a first sealing element is bonded between the first surface and the portion of the hole wall, and the second surface and the sealing portion are interference-fitted by an elastic support; The sealing part includes a sealing plate and a sealing block. The sealing plate is a rigid structure. One end of the sealing plate adjacent to the portion of the hole wall is connected to the sealing block. The extending direction of the sealing block is consistent with the extending direction of the portion of the hole wall. The sealing part is supported on the circuit board. The sealing block of the sealing part and the portion of the hole wall form the wire passage. The sealing plate of the sealing part is sealed to the remaining hole wall of the hole through a second sealing member, so that the portion of the hole except for the wire passage is sealed by the sealing part. The second sealing member is an adhesive backing.

2. The electronic device of claim 1, wherein, The elastic support is bonded to the sealing portion and abuts against the second surface with an interference fit.

3. The electronic device of claim 1 or 2, wherein, The elastic support is foam.

4. The electronic device of claim 1, wherein, The first seal is made of adhesive.

5. The electronic device of claim 1, wherein, The cable passage includes an inclined section, which is adjacent to the display screen and inclined in the direction toward the blocking part.

6. The electronic device of claim 5, wherein, The portion of the hole wall includes a hole slope, and the sealing portion includes a sealing slope, the hole slope and the sealing slope forming the inclined section portion.

7. The electronic device of claim 6, wherein, The inclined surface of the hole is parallel to the inclined surface of the sealing.

8. The electronic device of claim 1, wherein, The trace passage also includes a straight section, which is adjacent to the circuit board.

9. The electronic device of claim 8, wherein, The hole wall also includes a hole surface, and the sealing part also includes a sealing surface. The hole surface and the sealing surface form a straight section of the cable passage.

10. The electronic device of claim 9, wherein, The hole surface is parallel to the sealing surface.

11. The electronic device of claim 1, wherein, The remaining walls of the hole are provided with protrusions, which are parallel to the sealing plate and are sealed together by a sealing element.

12. The electronic device of claim 1 or 11, wherein, One end of the sealing plate is embedded in the sealing block.

13. The electronic device of claim 12, wherein, The sealing plate includes a first part and a second part set at an obtuse angle. The first part of the sealing plate is inclined toward the circuit board and embedded in the sealing block. The second part of the sealing plate is parallel to the circuit board and is bonded to the remaining hole wall of the hole with a second sealing element.

14. The electronic device of claim 13, wherein, The hole is cubic in shape, and the hole wall includes four holes. The partial hole wall is one of the holes, and the remaining hole walls include the other three holes.

15. The electronic device of claim 13 or 14, wherein, The second part of the sealing part is in the shape of a cuboid.

16. The electronic device of any one of claims 11, 13, 14, wherein, The sealing plate is a rigid material.

17. The electronic device of claim 16, wherein, The hard body is metal.

18. The electronic device of any of claims 11, 13, 14, 17, wherein, The sealing block is formed by liquid silicone injection molding on the blocking plate.

19. The electronic device of any of claims 13, 14, 17, wherein, The two ends of the extension direction of the sealing block are interference-fitted with the hole wall of the hole.

Images