Key sealing structure and electronic equipment

Abstract

The embodiment of the invention provides a key sealing structure and electronic equipment. The key sealing structure comprises a middle frame side wall extending along a first direction; the first groove and the second groove are formed in the middle frame side wall in a spaced mode in the first direction, and a connecting hole is formed between the first groove and the second groove; the key hole is formed in the side wall of the middle frame and is communicated with the first groove; the key is arranged in the key hole and comprises a biological feature recognition module; one end of the flexible flat cable is located in the first groove and connected with the biological feature recognition module, and the other end of the flexible flat cable sequentially penetrates through the connecting hole and the second groove and extends out of the second groove; the sealing piece is arranged in the connecting hole; and the sealant is filled in the second groove and submerges the connecting hole. According to the key sealing structure, the width of the side wall of the middle frame can be reduced, the internal space of the electronic equipment is increased, and the electronic equipment can contain a battery with larger capacity and larger size. In addition, the number of devices of the key sealing structure is smaller, and the installation process is simpler.

Description

Technical Field

[0001] The present application relates to the field of terminal technology, and in particular to a key sealing structure and an electronic device. Background Art

[0002] Fingerprint recognition modules are common devices in electronic devices such as mobile phones and tablets, and are widely used in identity authentication scenarios such as mobile payments and screen unlocking. According to different technical routes, fingerprint recognition modules can be divided into capacitive fingerprint recognition modules, ultrasonic fingerprint recognition modules, optical fingerprint recognition modules, etc.

[0003] Early fingerprint recognition modules were generally located in the non-display area at the bottom of the display screen, or on the back of the electronic device. Later, with the emergence of full-screen electronic devices and the continuous improvement of the integration of internal components of electronic devices, some fingerprint recognition modules were set on the side walls of the middle frame of electronic devices and integrated on a button on the side walls of the middle frame.

[0004] Usually, the fingerprint recognition module includes a flexible printed circuit (FPC) cable connected to the mainboard of the electronic device. Therefore, when the fingerprint recognition module is integrated on a button on the side wall of the middle frame, the side wall of the middle frame needs to have a routing channel for the FPC cable on one side of the button hole. Due to the existence of the routing channel, it is difficult to seal the gap between the button and the button hole by traditional methods such as sleeve sealing rings on the guide rod of the button to prevent liquids such as water from entering the inside of the electronic device through the button hole. Some sealing structures designed for buttons with integrated fingerprint recognition modules use multiple devices and complex structures added to the side wall of the middle frame to achieve the sealing of the button hole, but increase the width of the side wall of the middle frame, reduce the internal space of the electronic device, and make it difficult for the electronic device to accommodate batteries with larger capacity and size. Summary of the invention

[0005] The embodiment of the present application provides a key sealing structure and an electronic device, which can prevent liquids such as water from entering the interior of the electronic device through the key hole when the key of the middle frame side wall is integrated with a biometric identification module. In addition, the key sealing structure can also reduce the width of the middle frame side wall, increase the internal space of the electronic device, and enable the electronic device to place a battery with larger capacity and size. In addition, the key sealing structure has fewer components and the installation process is simpler.

[0006] In a first aspect, an embodiment of the present application provides a key sealing structure, including: a middle frame, the middle frame including a middle frame side wall extending along a first direction; a first groove and a second groove, the first groove and the second groove are arranged on the middle frame side wall at intervals along the first direction, and a connecting hole is arranged between the first groove and the second groove; a key hole, the key hole is opened on the middle frame side wall and is connected to the first groove; a key, the key is arranged in the key hole, and the key includes a biometric identification module; a flexible cable, one end of the flexible cable is located in the first groove and is connected to the biometric identification module, and the other end passes through the connecting hole and the second groove in sequence and extends to the outside of the second groove; a sealant, the sealant is arranged in the connecting hole and is used to seal the connecting hole; a sealant is filled in the second groove and submerges the connecting hole.

[0007] The key sealing structure provided in the embodiment of the present application forms a routing channel for a flexible cable by using the first groove, the second groove, and the connecting hole between the first groove and the second groove, and blocks the routing channel for the flexible cable by using a sealing member arranged in the connecting hole and a sealing glue filled in the second groove. In this way, when the key includes a biometric identification module, the liquid entering the first groove from the key hole will not enter the second groove, and therefore, will not enter the interior of the electronic device from the second groove, thereby achieving waterproof sealing of the key hole. In addition, since the first groove and the second groove are distributed along the first direction, the flexible cable can be routed along the first direction, thereby reducing the width of the middle frame side wall, increasing the internal space of the electronic device, and enabling the electronic device to place a battery with a larger capacity and a larger size. In addition, compared with the traditional key sealing structure, the key sealing structure provided in the embodiment of the present application only adds structures such as a sealing member and a sealing glue on the basis of the original middle frame side wall, and the number of components is reduced, and the installation process is simpler.

[0008] In one implementation, the sealing member includes a sealing block and a first sealing ring; the sealing block is disposed in the connection hole; the first sealing ring is sleeved on the sealing block and is located between the sealing block and the inner wall of the connection hole; the flexible cable is passed through the first sealing ring and the inner wall of the connection hole; wherein the radial width of the first sealing ring is greater than the spacing between the sealing block and the inner wall of the connection hole, so that the first sealing ring forms an interference fit with the connection hole under the pressure of the sealing block and the connection hole. In this way, the sealing member can be in close contact with the inner wall of the connection hole and the flexible cable passing through the connection hole, preventing liquid from passing through the connection hole.

[0009] In one implementation, the sealing member includes a second sealing ring; the second sealing ring is disposed in the connection hole and includes a threading hole formed along a first direction; the flexible cable is threaded in the threading hole and forms an interference fit with the threading hole; the size of the second sealing ring is larger than the size of the connection hole, so that the second sealing ring forms an interference fit with the connection hole under the pressure of the connection hole. In this way, after the second sealing ring is installed in the connection hole, the size of the threading hole can be compressed under the pressure of the connection hole, so that the threading hole and the flexible cable form an interference fit.

[0010] In one implementation, the key sealing structure further includes: a first limit bracket; the first limit bracket includes a bracket body and a sealing block; the bracket body is in the first groove, and is used to limit the displacement range when the key is pressed; the bracket body and the sealing block are connected as an integrated structure. In this way, the sealing block and the bracket body are integrated into one device, which reduces the number of devices in the key sealing structure, helps to simplify the installation process, and improves production efficiency. In addition, since one end of the bracket body is fixed in the first groove, it can limit the position of the sealing block connected thereto, avoid the sealing block from sliding in the connecting hole, and improve the sealing reliability.

[0011] In one implementation, the key sealing structure further includes: a second limiting bracket; the second limiting bracket includes a bracket body; the bracket body is in the first groove and is used to limit the displacement range when the key is pressed.

[0012] In one implementation, one end of the bracket body away from the connecting hole is fixed in the first groove.

[0013] In one implementation, the side wall of the middle frame includes an appearance surface and a first surface for fitting with the back cover of the electronic device; the first groove and the second groove are opened on the first surface; the button hole is opened on the appearance surface and connected to the side wall of the first groove.

[0014] In one implementation, the key sealing structure also includes: a sealing glue line applied on the first surface; the sealing glue line is continuously distributed in the first area, the second area, the third area, the fourth area and the fifth area of ​​the first surface; the first area and the second area are areas of the outer edge of the first groove, wherein the first area is located on the opposite side of the second groove, and the second area is located on the opposite side of the appearance surface; the third area is located between the first groove and the second groove; the fourth area and the fifth area are areas of the outer edge of the second groove, wherein the fourth area is located between the second groove and the appearance surface, and the fifth area is located on the opposite side of the first groove.

[0015] In this way, by utilizing the "C"-shaped sealant lines in the first area, the second area, and the third area, as well as the sealant lines on the side walls of the middle frame and the edges of the back cover, a sealed area can be formed between the first groove and the back cover, thereby preventing liquid in this area from flowing into other areas between the middle frame and the back cover, thereby achieving a waterproof seal.

[0016] In addition, the sealant line also forms a "C"-shaped sealant line in the third area, the fourth area, and the fifth area, and the "C"-shaped sealant line also forms a gap on the side of the second groove away from the appearance surface. Therefore, the flexible cable can pass through the gap, extend from the side of the second groove away from the appearance surface to the outside of the second groove, and continue to run toward the motherboard.

[0017] In one implementation, the key sealing structure also includes: a guide rod; the guide rod is arranged in the first groove and is located between the bracket body and the bottom surface of the first groove; along the pressing direction of the key, one end of the guide rod abuts against the key, and the other end is used to close the switch device corresponding to the key when the key is pressed.

[0018] In one implementation, the guide rod further includes at least one limiting groove; the bracket body further includes a limiting piece arranged corresponding to the limiting groove, and the limiting piece is embedded in the limiting groove; along the pressing direction of the key, the width of the limiting groove is greater than the thickness of the limiting piece. In this way, the limiting groove cooperates with the limiting piece to limit the pressing depth of the key and prevent the key from falling out of the key hole.

[0019] In one implementation, a bracket fixing seat is also provided in the first groove, and the bracket fixing seat is located at the end of the first groove away from the connecting hole; a countersunk groove is provided on the top of the bracket fixing seat, and a threaded hole is provided in the countersunk groove; the end of the bracket body away from the connecting hole also includes a limiting ring, and the limiting ring is located in the countersunk groove; the bracket body is fixed to the bracket fixing seat by screws screwed into the limiting ring and the threaded hole.

[0020] In one implementation, the flexible cable extends from a side of the second groove away from the appearance surface to outside the second groove.

[0021] In one implementation, the biometric recognition module is a fingerprint recognition module.

[0022] In a second aspect, an embodiment of the present application further provides an electronic device, wherein the electronic device includes the key sealing structure provided by the first aspect and its various implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1A is an exemplary structural schematic diagram of a non-folding screen electronic device;

[0024] Figure 1B is an exemplary structural diagram of a folding screen electronic device;

[0025] Figure 2 is a partial cross-sectional view of a key without an integrated fingerprint recognition module;

[0026] Figure 3 is a partial cross-sectional view of a key integrated with a fingerprint recognition module;

[0027] Figure 4 It is a schematic diagram of a sealed structure of a key integrated with a fingerprint recognition module;

[0028] Figure 5 It is a schematic diagram of another sealing structure of a key integrated with a fingerprint recognition module;

[0029] Figure 6 is a structural exploded diagram of a key sealing structure provided in an embodiment of the present application;

[0030] Figure 7 It is a schematic diagram of the cooperation between the key hole and the key in the key sealing structure provided in the embodiment of the present application;

[0031] Figure 8 It is a schematic diagram of the cooperation between the sealing member and the connecting hole in the key sealing structure provided in the embodiment of the present application;

[0032] Fig. 9 is a schematic diagram of filling the sealant in the key sealing structure provided in the embodiment of the present application;

[0033] Fig. 10A This is a first structural schematic diagram of a seal provided in an embodiment of the present application;

[0034] Fig. 10B and Fig. 10C is a schematic diagram of the cooperation between the sealing member, the connecting hole and the flexible cable provided in an embodiment of the present application;

[0035] Fig.11A is a second structural schematic diagram of a seal provided in an embodiment of the present application;

[0036] Fig. 11B is a schematic diagram of the cooperation between the sealing member, the connecting hole and the flexible cable provided in an embodiment of the present application;

[0037] Fig.12 is a structural schematic diagram of a second limiting bracket in a key sealing structure provided in an embodiment of the present application;

[0038] Fig.13 is a structural schematic diagram of a guide rod in a key sealing structure provided in an embodiment of the present application;

[0039] Fig.14A and Fig. 14B It is a schematic diagram of the installation of the first groove and the bracket body provided in an embodiment of the present application;

[0040] Fig.15A and Fig. 15B It is a structural schematic diagram of the sealing glue line in the key sealing structure provided in an embodiment of the present application. DETAILED DESCRIPTION

[0041] Fingerprint recognition modules are common devices in electronic devices such as mobile phones and tablets, and are widely used in identity authentication scenarios such as mobile payments and screen unlocking. According to different technical routes, fingerprint recognition modules can be divided into capacitive fingerprint recognition modules, ultrasonic fingerprint recognition modules, optical fingerprint recognition modules, etc.

[0042] Early fingerprint recognition modules were generally located in the non-display area at the bottom of the display screen, or on the back of the electronic device. Later, with the emergence of full-screen electronic devices and the continuous improvement of the integration of internal components of electronic devices, some fingerprint recognition modules were set on the side walls of the middle frame of electronic devices and integrated on a button on the side walls of the middle frame.

[0043] The following is an exemplary description of the form of an electronic device including a side fingerprint recognition module in conjunction with the accompanying drawings.

[0044] Based on whether the electronic device is foldable, the electronic devices can be divided into non-folding screen electronic devices and folding screen electronic devices. Among them, non-folding screen electronic devices include traditional straight-screen mobile phones, tablet computers, smart watches, etc., and folding screen electronic devices include folding screen mobile phones, etc.

[0045] Figure 1A It is an exemplary structural diagram of a non-folding screen electronic device.

[0046] like Figure 1A As shown, the electronic device may include a middle frame 10 , a display screen 20 and a back cover 30 .

[0047] For the convenience of description, a three-dimensional rectangular coordinate system may be established for the electronic device.

[0048] Exemplarily, a three-dimensional rectangular coordinate system may be established by taking the width direction of the electronic device as the x-axis direction, the length direction of the electronic device as the y-axis direction, and the thickness direction of the electronic device as the z-axis direction.

[0049] The middle frame 10 may include a middle frame side wall 11 arranged around the z-axis direction, and the middle frame side wall 11 has a certain width along the z-axis direction. The display screen 20 is buckled on one side of the middle frame side wall 11 along the z-axis direction, and the back cover 30 is buckled on the other side of the middle frame side wall 11 along the z-axis direction.

[0050] The middle frame side wall 11 can be made of metal, such as aluminum-magnesium alloy, stainless steel, etc., or plastic. The middle frame side wall 11 and the back cover 30 or the display screen 20 can be bonded with glue, or assembled together using components such as the display screen 20 bracket.

[0051] It is understandable that, depending on the form of the electronic device, the middle frame side wall 11 can have a variety of shapes. For example, when the electronic device is a non-folding screen mobile phone, the middle frame side wall 11 can be rectangular, the short side of the middle frame side wall 11 can extend along the x-axis direction, and the long side of the middle frame side wall 11 can extend along the y-axis direction. When the electronic device is a smart watch, the middle frame side wall 11 can be rectangular or circular.

[0052] Figure 1B It is an exemplary structural diagram of a foldable screen electronic device.

[0053] like Figure 1B As shown, the electronic device may include a first body 40 , a second body 50 , a hinge 60 and a display screen 20 .

[0054] Among them, the first body 40 and the second body 50 are located on both sides of the rotating shaft and are connected by the rotating shaft. The display screen is buckled on the first body 40 and the second body 50. When the first body 40 and the second body 50 rotate around the rotating shaft, the display screen 20 can be folded and unfolded. Among them, according to the different folding directions of the display screen 20. Folding screen electronic devices can be divided into inner folding screen devices and outer folding screen devices. Among them, the first body 40 and the second body 50 of the inner folding screen device can be folded to one side of the display screen 20, and the display screen 20 is hidden in the folded state, and presents a straight screen effect in the unfolded state; the first body 40 and the second body 50 of the outer folding screen device can be folded to the opposite side of the display screen 20, and the display screen 20 is surrounded by the outside of the electronic device in the folded state, and presents a straight screen effect in the unfolded state.

[0055] The first body 40 and the second body 50 of the electronic device may each include a middle frame.

[0056] Taking the first body 40 as an example, the middle frame of the first body 40 may include a middle frame side wall 11 .

[0057] Exemplarily, for ease of description, the width direction of the first body 40 can be used as the x-axis direction, the length direction of the first body 40 can be used as the y-axis direction, and the thickness direction of the first body 40 can be used as the z-axis direction to establish a three-dimensional rectangular coordinate system.

[0058] The middle frame side wall 11 can be arranged around the z-axis direction, and the middle frame side wall 11 has a certain width along the z-axis direction. The display screen 20 is buckled on one side of the middle frame side wall 11 along the z-axis direction, and the back cover of the first fuselage 40 is buckled on the other side of the middle frame side wall 11 along the z-axis direction.

[0059] exist Figure 1A and Figure 1B In the electronic device shown, the middle frame side wall 11 may include one or more buttons 12 for implementing different functions, such as a power button, a volume button, etc. Among them, the fingerprint recognition module of the electronic device can be integrated into any button 12 of the middle frame side wall 11, such as the power button. In this way, when the user needs to perform fingerprint verification, the finger can be placed on the button 12 so that the fingerprint recognition module obtains the user's fingerprint and performs the verification process.

[0060] Figure 2 It is a partial cross-sectional view of a button without an integrated fingerprint recognition module.

[0061] like Figure 2 As shown, in order to set the button 12 on the middle frame side wall 11, a button hole 13 may be provided on the middle frame side wall 11. The shape of the button hole 13 matches the shape of the button 12, and the size is slightly larger than the button 12, so as to form a gap fit with the button 12, so that the button 12 can be pressed flexibly. It is understandable that due to the existence of the gap, when the electronic device comes into contact with liquids such as water, the liquid may enter the inside of the electronic device from the gap. Therefore, in order to prevent the liquid from entering the inside of the electronic device from the gap and make the electronic device have a certain waterproof performance, some electronic devices can seal the button 12.

[0062] For example, Figure 2 As shown, along the opening direction of the key hole 13, for example, the x-axis direction, a guide rod 14 is further provided at the bottom of the key 12. The guide rod 14 extends along the x-axis direction, with one end abutting against the bottom of the key 12 and the other end facing the switch contact 15 of the key 12. In this way, when the user presses the key 12, the key 12 pushes the guide rod 14 to move along the x-axis, pressing the switch contact 15, thereby triggering the corresponding key 12 function.

[0063] In the structure of this traditional key 12, the inner wall 16 of the key hole 13 can extend to the side of the guide rod 14. In this way, a sealing ring 17 can be mounted on the guide rod 14. The interference fit formed by the sealing ring, the side of the guide rod 14 and the inner wall 16 of the key hole 13 can be used to fill the gap between the side of the guide rod 14 and the inner wall 16 of the key hole 13, thereby preventing liquid from entering the interior of the electronic device.

[0064] Figure 3 It is a partial cross-sectional view of a button with an integrated fingerprint recognition module.

[0065] like Figure 3As shown, the button 12 is arranged in the button hole 13 of the middle frame side wall 11, and the fingerprint recognition module 18 can be integrated in the button 12, for example, wrapped by the shell structure of the button 12, so that the fingerprint recognition module 18 and the button 12 can be integrated into a whole. The FPC cable 19 of the fingerprint recognition module 18 is located in the button hole 13, one end of which is led out from one side of the fingerprint recognition module 18 and is routed along a preset path. The other end of the FPC cable 19 away from the fingerprint recognition module 18 can be connected to the motherboard of the electronic device through a connector, etc., so that when the user touches or presses the button 12, the FPC cable 19 can transmit the electrical signal generated by the fingerprint recognition module 18 to the motherboard of the electronic device.

[0066] It is understandable that due to the presence of the FPC cable 19, a routing channel for the FPC cable 19 needs to be opened on one side of the button hole 13 of the middle frame side wall 11. Due to the presence of the routing channel, it is difficult to seal the gap between the button 12 and the button hole 13 by using a traditional method such as sleeve a sealing ring on the guide rod 14 of the button 12.

[0067] Furthermore, since the fingerprint recognition module 18 includes devices for realizing the fingerprint collection function, such as capacitor devices, optical devices, ultrasonic devices, etc., the thickness of the key 12 integrated with the fingerprint recognition module 18 in the x-axis direction will be greater than that of the traditional key 12 without the fingerprint recognition module 18. In addition, in order for the sealing ring to be sleeved on the guide rod 14, the guide rod 14 also needs to have a certain length on the x-axis. In this case, even if some methods are used to achieve the gap between the key 12 and the key hole 13 by sleeved with a sealing ring on the guide rod 14, it will cause the sum of the dimensions of the key 12 and the guide rod 14 in the x-axis direction to be too large, thereby increasing the width of the middle frame side wall 11 in the x-axis direction, reducing the internal space of the electronic device, and making it difficult for the electronic device to accommodate batteries with larger capacity and larger size.

[0068] In addition, after the FPC cable 19 is led out from the fingerprint recognition module 18, it is generally bent near the middle frame side wall 11 to between the battery and the back cover of the electronic device, and then routed to the motherboard of the electronic device. Therefore, dispensing glue or setting adhesive backing between the bending position of the cable and the back cover can also achieve a certain sealing effect. However, this sealing method of dispensing glue and adhesive backing has poor stability, and the consistency of dispensing glue is difficult to ensure, and it will also lead to negative problems such as difficulty in disassembling the battery.

[0069] Figure 4 It is a schematic diagram of a sealed structure of a key integrated with a fingerprint recognition module.

[0070] like Figure 4As shown, in order to prevent liquids such as water from entering the interior of the electronic device from the button hole, the side wall of the middle frame can be grooved in the lead-out area of ​​the FPC cable 19 from the side of the middle frame side wall facing the back cover to obtain a wire groove 41 with a certain depth along the z-axis direction, and the middle frame side wall forms an outer wall 42 on one side of the wire groove 41 and an inner wall 43 on the other side of the wire groove 41. Among them, the middle frame side wall has a certain thickness at the bottom of the wire groove 41 to form a wire groove bottom wall 44. The wire groove bottom wall 44 is connected to the inner wall 43 to form an L-shaped structure. After the FPC cable 19 is led out from the fingerprint recognition module, it can be routed along the direction of the middle frame side wall to the wire groove 41, and then, along the x-axis direction, it can be routed from the side close to the outer wall 42 to the side close to the inner wall 43, and from the opening of the wire groove 41 to the outside of the wire groove 41 on the side close to the inner wall 43.

[0071] A plastic bracket 45 is also provided in the wire groove 41, and the plastic bracket 45 leans against the intersection of the inner wall 43 and the bottom wall 44 of the wire groove. The width of the plastic bracket 45 in the x-axis direction gradually decreases from the bottom of the wire groove 41 to the opening of the wire groove 41, so as to form an inclined surface on the side away from the inner wall 43 and the bottom wall 44 of the wire groove. The FPC cable 19 is against the inclined surface and can be fixed by the backing adhesive 46. A rubber wedge 47 is also provided in the wire groove 41, and the rubber wedge 47 is embedded between the inclined surface and the outer wall 42 to fill the wire groove 41, and cooperates with the plastic bracket 45 to form a clamp for the FPC cable 19. Along the z-axis direction, the top of the wire groove 41 has a certain depth from the top of the plastic bracket 45 and the top of the rubber wedge 47. A sealant 48 is also provided in the wire groove 41 . The sealant 48 covers the top of the rubber wedge 47 and the top of the plastic bracket 45 , thereby sealing the opening of the wire groove 41 .

[0072] Figure 4 The key sealing structure shown can prevent liquids such as water from entering the interior of the electronic device through the key hole. However, in this structure, the FPC cable 19 is routed in the wire groove 41 along the x-axis direction. Plastic brackets 45, rubber wedges 47 and other devices are also provided in the wire groove 41 along the x-axis direction. Therefore, the wire groove 41 needs to have a larger width in the x-axis direction, which increases the width of the side wall of the middle frame along the x-axis direction, reduces the internal space of the electronic device, and makes it difficult for the electronic device to accommodate batteries with larger capacity and size.

[0073] Figure 5 It is a schematic diagram of another sealing structure of a key integrated with a fingerprint recognition module.

[0074] like Figure 5As shown, in order to prevent liquids such as water from entering the interior of the electronic device from the button hole 13, the middle frame side wall 11 can be grooved in the area of ​​the button hole 13 from the side of the middle frame side wall 11 facing the back cover to obtain a wire groove 51 connected to the button hole 13. A wire bracket 52 is provided in the wire groove 51, and there is a certain gap between the wire bracket 52 and the inner wall of the wire groove 51. The gap can be filled by a rubber ring 53 sleeved on the outer periphery of the wire bracket 52 to achieve a seal between the wire bracket 52 and the inner wall of the wire groove 51. The wire bracket 52 includes a through hole 54 that penetrates along the z-axis direction. After the FPC cable 19 is led out from the fingerprint recognition module, it can be routed along the x-axis direction from the side close to the outer wall to the bottom of the through hole 54, and pass through the through hole 54 from the bottom of the through hole 54 upward, and routed from the top of the through hole 54 to the outside of the wire groove 51. The cable bracket 52 is also provided with a foam 55 surrounding the through hole 54 at the top. After the FPC cable 19 passes through the through hole 54, it can be bent to one side, pass over the foam 55, and routed to the position where it needs to be connected to the PCB board of the electronic device. The key sealing structure also includes a cover plate 57, which can be crimped on the foam 55 to block the through hole 54. The cover plate 57 is also provided with a backing glue 56 on the side facing the foam 55, so that after the cover plate 57 is crimped on the foam 55, the backing glue 56 can be bonded to the foam 55, thereby blocking the gap between the foam 55 and the cover plate 57. The cover plate 57 can be fixed to the middle frame side wall 11 by screws 58, so that the cover plate 57 applies a certain pressure to the foam 55, compresses the foam 55, and clamps the FPC cable 19 with the cover plate 57 to improve the sealing reliability.

[0075] Figure 5 The key sealing structure shown can prevent liquids such as water from entering the interior of the electronic device through the key hole 13. However, in this structure, the FPC cable 19 is routed along the x-axis direction in the wire slot 51, and a wire bracket 52 is also provided in the wire slot 51. Figure 4 The structure shown is similar, and the wire groove 51 also needs to have a larger width in the x-axis direction, which increases the width of the middle frame side wall 11, reduces the internal space of the electronic device, and makes it difficult for the electronic device to accommodate a battery with a larger capacity and size. In addition, the key sealing structure includes multiple components such as a wire bracket 52, foam 55, cover plate 57, adhesive 56, screws 58, etc., which makes its installation process more complicated.

[0076] The embodiment of the present application provides a key sealing structure, which can prevent liquids such as water from entering the interior of the electronic device through the key hole when the key of the middle frame side wall is integrated with a fingerprint recognition module or other biometric recognition module. In addition, the key sealing structure can also reduce the width of the middle frame side wall, increase the internal space of the electronic device, and enable the electronic device to place a battery with larger capacity and size. In addition, the key sealing structure has fewer components and the installation process is simpler.

[0077] Figure 6 It is a structural decomposition diagram of the key sealing structure provided in the embodiment of the present application.

[0078] like Figure 6 As shown, the key sealing structure may include:

[0079] Middle frame 100 , button 200 , flexible cable 300 , and seal 400 .

[0080] The middle frame 100 includes a middle frame side wall 110 extending along a first direction.

[0081] It should be noted that, in order to facilitate description of the extension direction of the middle frame sidewall 110, the embodiment of the present application may define the extension direction of the middle frame sidewall 110 as a first direction. In electronic devices of different forms, the shape of the middle frame sidewall 110 may be different, and therefore, the first direction may also be different.

[0082] Exemplarily, when the electronic device is a mobile phone or a tablet computer, the middle frame side wall 110 may be a rectangular side wall formed around the z-axis of the electronic device, and the first direction may be the y-axis direction of the electronic device or the x-axis direction.

[0083] Exemplarily, when the electronic device is a smart watch, the middle frame side wall 110 may be a circular side wall formed around the z-axis of the electronic device, and the first direction may be a tangential direction of the circular side wall.

[0084] It should be noted that in Figure 6 , the first direction is exemplarily the y-axis direction.

[0085] It can be understood that the middle frame side wall 110 is a supporting structure for the display screen and the back cover of the electronic device, with one side being attached to the display screen and the other side being attached to the back cover. After the display screen and the back cover are attached to the middle frame side wall 110, the portion of the middle frame side wall 110 between the display screen and the back cover is exposed to the electronic device, and this portion can be referred to as the appearance surface 111 of the middle frame side wall 110.

[0086] A first groove 112 and a second groove 113 are formed on the middle frame side wall 110 , wherein the first groove 112 and the second groove 113 are spaced apart and distributed on the middle frame side wall 110 along a first direction.

[0087] In some embodiments, the first groove 112 and the second groove 113 may be formed on the first surface 114 of the middle frame sidewall 110 .

[0088] Exemplarily, the first surface 114 may be a surface of the middle frame sidewall 110 for fitting with the back cover of the electronic device. Accordingly, the shape of the first surface 114 may match the edge shape of the back cover. For example, if the edge of the back cover is a curved surface, then the first surface 114 may be a curved surface; if the edge of the back cover is a flat surface, then the first surface 114 may be a flat surface.

[0089] Exemplarily, the first surface 114 may also be a surface of the middle frame side wall 110 for bonding with the screen of the electronic device. Accordingly, the shape of the first surface 114 may match the edge shape of the screen. For example, if the edge of the screen is a curved surface, then the first surface 114 may be a curved surface, and if the edge of the screen is a flat surface, then the first surface 114 may be a flat surface.

[0090] The first groove 112 may be a strip-shaped groove, the length direction of which may be parallel to the first direction, and the width direction may be perpendicular to the first direction. The first groove 112 may be formed to a certain depth inside the middle frame side wall 110, and does not penetrate the middle frame side wall 110, so as to form a closed groove bottom surface 115 at the bottom of the first groove 112. The depth direction of the first groove 112 may be parallel to the z-axis, or may have a certain angle relative to the z-axis, which is not limited in the embodiment of the present application.

[0091] The second groove 113 may be a strip-shaped groove, the length direction of which may be parallel to the first direction, and the width direction may be perpendicular to the first direction. The length of the second groove 113 may be the same as or different from the length of the first groove 112. Preferably, the length of the second groove 113 is less than the length of the first groove 112. The width of the second groove 113 may be the same as the width of the first groove 112. Preferably, the width of the second groove 113 is less than or equal to the width of the first groove 112, so as not to increase the required width of the middle frame side wall 110 perpendicular to the first direction. The second groove 113 may form a certain depth inside the middle frame side wall 110, and does not penetrate the middle frame side wall 110. The depth direction of the second groove 113 may be parallel to the z-axis, or may have a certain angle relative to the z-axis, which is not limited in the embodiment of the present application.

[0092] In the embodiment of the present application, a connection hole 117 is further provided between the first groove 112 and the second groove 113. The connection hole 117 can connect the first groove 112 and the second groove 113, so that some devices can be arranged between the first groove 112 and the second groove 113.

[0093] In a specific implementation, since the first groove 112 and the second groove 113 have a certain interval along the first direction, the middle frame side wall 110 can form a retaining wall 118 between the first groove 112 and the second groove 113. The connecting hole 117 can be opened on the retaining wall 118, so as to connect the first groove 112 with the second groove 113. There is a certain distance between the inner wall of the connecting hole 117 and the first surface 114, that is, the connecting hole 117 does not damage the first surface 114, so that the first surface 114 is still a continuous structure between the first groove 112 and the second groove 113.

[0094] The middle frame side wall 110 is also provided with a button hole 116, which can be opened on the appearance surface 111 of the middle frame side wall 110, and penetrates from the appearance surface 111 of the middle frame side wall 110 to the first groove 112, so that the button hole 116 can be connected with the first groove 112. In order to facilitate the description of the opening direction of the button hole 116, the embodiment of the present application can define the opening direction of the button hole 116 as a second direction, and generally speaking, the second direction can be perpendicular to the first direction. That is to say, if the first direction is the y-axis direction of the electronic device, then the second direction can be the x-axis direction of the electronic device, and if the first direction is the x-axis direction of the electronic device, then the second direction can be the y-axis direction of the electronic device.

[0095] It should be noted that, generally speaking, the back cover (or display screen) of the electronic device and the first surface 114 can be bonded together by adhesive. Then, in the embodiment of the present application, the adhesive between the back cover (or display screen) of the electronic device and the first surface 114 can also be distributed on the outer edge of the first groove 112. In this way, after the back cover (or display screen) of the electronic device is bonded to the first surface 114, the adhesive can block the gap between the back cover (or display screen) of the electronic device and the first surface 114 located in the outer edge area of ​​the first groove 112, so that the liquid entering the first groove 112 from the button hole 116 will not enter the interior of the electronic device from between the back cover (or display screen) of the electronic device and the first surface 114.

[0096] exist Figure 6 , the second direction is exemplarily the x-axis direction.

[0097] Figure 7 It is a schematic diagram of the coordination between the button hole and the button in the button sealing structure provided in the embodiment of the present application.

[0098] Combination Figure 6 and Figure 7 As shown, the key 200 is disposed in the key hole 116. Along the second direction, the end surface of the key 200 facing the first groove 112 can be referred to as the key bottom surface 220, and the end surface of the key 200 facing away from the first groove 112 can be referred to as the key top surface 230. Wherein, when the key 200 is not pressed, the key top surface 230 can protrude outward from the appearance surface 111 by a certain distance, and the key bottom surface 220 can be coplanar with the first side wall 119 of the first groove 112, or be located in the first groove 112. Wherein, the first side wall 119 is the side wall of the first groove 112 close to the appearance surface 111.

[0099] The shape of the key 200 matches the shape of the key hole 116 , and the size of the key 200 is smaller than the size of the key hole 116 , so that the key hole 116 and the key 200 can form a clearance fit, so that the key 200 can be pressed flexibly.

[0100] For example, the button 200 may be a bar-shaped button, and accordingly, the button hole 116 may be a bar-shaped hole; or, the button 200 may be a round button, and accordingly, the button hole 116 may be a round hole. This embodiment of the present application does not limit this.

[0101] In addition, based on the function of the button 200, the button 200 may be a power button, a volume button, a mute mode switch button, or other buttons 200 configured to implement certain functions. The present application embodiment does not limit this.

[0102] In the embodiment of the present application, the button 200 may include a biometric identification module 210 .

[0103] The biometric identification module 210 can be a part of the button 200 and integrated with the button 200 into one device, or the button 200 can also be used as a shell of the biometric identification module 210 to wrap the biometric identification module 210 in the shell.

[0104] The biometric identification module 210 in the embodiment of the present application includes, but is not limited to: a fingerprint identification module, a blood oxygen detection module, a blood sugar detection module, a heart rate detection module, etc. Among them, the fingerprint identification module can be, for example, a capacitive fingerprint identification module, an optical fingerprint identification module, an ultrasonic fingerprint identification module, etc. The embodiment of the present application does not limit this.

[0105] It is understandable that the biometric recognition module 210, such as a fingerprint recognition module, usually includes a flexible cable 300 for transmitting signals and powering other devices in the electronic device (such as a system chip SoC). The flexible cable 300 can be, for example, an FPC cable, also known as a soft cable.

[0106] In the embodiment of the present application, one end of the flexible cable 300 is located in the first groove 112 and connected to the biometric identification module 210, and the other end is routed along the first direction, passes through the connection hole 117 and the second groove 113 in sequence, and extends to the outside of the second groove 113. In the first groove 112, the flexible cable 300 can be close to the first side wall 119 so as not to occupy the space in the second direction.

[0107] It is understandable that, since the flexible cable 300 is routed along the first direction, the first groove 112 and the second groove 113 do not need to provide routing space for the flexible cable 300 in the second direction, thereby reducing the width of the middle frame sidewall 110 in the second direction.

[0108] Figure 8 It is a schematic diagram of the cooperation between the sealing member and the connecting hole in the key sealing structure provided in the embodiment of the present application.

[0109] like Figure 8 As shown, the sealing member 400 is disposed in the connection hole 117, and the function of the sealing member 400 is to block the connection hole 117 to prevent the liquid or the like entering the first groove 112 from entering the second groove 113 from the connection hole 117. Accordingly, the sealing member 400 may have a shape matching the connection hole 117, for example, if the connection hole 117 is a rectangular hole, the cross section of the sealing member 400 may be rectangular, and if the connection hole 117 is a circular hole, the cross section of the sealing member 400 may be circular. The overall size of the sealing member 400 may be slightly larger than the size of the connection hole 117, so that the sealing member 400 may form an interference fit with the connection hole 117, and be in close contact with the inner wall of the connection hole 117 and the flexible flat cable 300 passing through the connection hole 117, so as to prevent the liquid from passing through the connection hole 117.

[0110] Fig. 9 It is a schematic diagram of filling the sealant 500 in the key sealing structure provided in the embodiment of the present application.

[0111] like Fig. 9 As shown, in order to improve the sealing effect, the second groove 113 is also filled with a sealant 500. The sealant 500 can be filled in the second groove 113 after the sealant 400 is inserted into the connection hole 117, and the filling amount of the sealant 500 needs to be able to make the sealant 500 submerge the connection hole 117. In this way, the sealant 500 can completely block the connection hole 117, and even if liquid passes through the connection hole 117, it will not flow into the second groove 113, and will not flow from the second groove 113 into the interior of the electronic device. In addition, the sealant 500 can also fix and guide the flexible cable 300 in the second groove 113, so that the flexible cable 300 is routed to the outside of the second groove 113 along a specified direction.

[0112] As can be seen from the above technical solutions, the key sealing structure provided in the embodiment of the present application forms a routing channel for the flexible flat cable 300 by using the first groove 112 and the second groove 113, and the connecting hole 117 between the first groove 112 and the second groove 113, and blocks the routing channel for the flexible flat cable 300 by using the sealing member 400 disposed in the connecting hole 117 and the sealing glue 500 filled in the second groove 113. In this way, when the key 200 includes the biometric feature recognition module 210, even if liquid such as water enters the first groove 112 from the key hole 116, it will not further enter the second groove 113, and will not enter the interior of the electronic device from the second groove 113, thereby achieving waterproof sealing of the key hole 116.

[0113] In addition, since the first groove 112 and the second groove 113 are distributed along the first direction, the flexible flat cable 300 can be routed along the first direction, pass through the connection hole 117, and routed into the second groove 113. Therefore, the first groove 112 and the second groove 113 do not need to provide routing space for the flexible flat cable 300 in the second direction. In this way, the width of the first groove 112 and the second groove 113 in the second direction can be smaller, thereby reducing the width of the middle frame side wall 110 in the second direction, increasing the internal space of the electronic device, and enabling the electronic device to place a battery with a larger capacity and a larger size.

[0114] In addition, compared with the traditional key sealing structure, the key sealing structure provided in the embodiment of the present application only adds a seal 400, a sealant 500 and other structures on the basis of the original middle frame side wall 110. Therefore, the number of components is smaller and the structure is simpler, which greatly simplifies the installation process, improves production efficiency, reduces failure points caused by component failure, and improves sealing reliability.

[0115] Fig. 10A This is the first structural schematic diagram of the seal provided in the embodiment of the present application.

[0116] Fig. 10B and Fig. 10C It is a schematic diagram of the cooperation between the seal, the connection hole and the flexible cable provided in the embodiment of the present application.

[0117] like Fig. 10A , Fig. 10B and Fig. 10C As shown, in some embodiments, the sealing member 400 may include a sealing block 410 and a first sealing ring 420. Wherein:

[0118] The sealing block 410 can be made of a hard material such as plastic or metal, or a soft material such as rubber, which is not specifically limited here. The shape of the sealing block 410 can have a shape that matches the connection hole 117. For example, if the connection hole 117 is a rectangular hole, the cross section of the sealing block 410 can be rectangular. If the connection hole 117 is a circular hole, the cross section of the sealing block 410 can be circular. The size of the sealing block 410 can be slightly smaller than the size of the connection hole 117. When the sealing block 410 is separately arranged in the connection hole 117, there is a certain distance between the sealing block 410 and the inner wall of the connection hole 117.

[0119] The first sealing ring 420 may be an annular sealing ring that matches the cross-sectional shape of the sealing block 410 and may be made of a material with a certain elasticity such as rubber or resin. The first sealing ring 420 may be sleeved on the sealing block 410 to form a combined body.

[0120] The assembly formed by the sealing block 410 and the first sealing ring 420 can be inserted into the connection hole 117. In a specific implementation, the flexible cable 300 can be placed against the inner wall of the connection hole 117, and then the assembly formed by the sealing block 410 and the first sealing ring 420 can be inserted into the connection hole 117, so that the flexible cable 300 is inserted between the first sealing ring 420 and the inner wall of the connection hole 117.

[0121] Illustratively, when the flexible cable 300 passes through the connection hole 117, it can be abutted against the side wall of the connection hole 117 close to the exterior surface 111. In this way, after the assembly formed by the sealing block 410 and the first sealing ring 420 is inserted into the connection hole 117, the flexible cable 300 will not be twisted or significantly bent, and is not easily damaged.

[0122] It should be noted that, when the first sealing ring 420 is not deformed by force, its radial width is greater than the distance between the sealing block 410 and the inner wall of the connecting hole 117. In this way, when the assembly formed by the sealing block 410 and the first sealing ring 420 is inserted into the connecting hole 117, the first sealing ring 420 can form an interference fit with the connecting hole 117 under the pressure of the sealing block 410 and the connecting hole 117.

[0123] The seal 400 provided in the embodiment of the present application utilizes the interference fit formed by the sealing block 410 and the first sealing ring 420 with the connecting hole 117 to seal the connecting hole 117 and prevent the liquid in the first groove 112 from entering the second groove 113 from the connecting hole 117, thereby achieving a sealing effect.

[0124] Further Fig. 10A and Fig. 10BAs shown, in some embodiments, the key sealing structure may include a first position limiting bracket 600 . Part of the structure in the sealing member 400 may be integrated on the first position limiting bracket 600 .

[0125] For example, the first limiting bracket 600 may include a bracket body 610 and a sealing block 410, wherein the bracket body 610 and the sealing block 410 are an integrated structure. The bracket body 610 is located in the first groove 112, and is used to limit the displacement range of the button 200 when it is pressed, and to prevent the button 200 from falling out of the button hole 116.

[0126] The bracket body 610 may be a strip-shaped structure, wherein one end of the bracket body 610 is away from the connection hole 117 and fixed in the first groove 112; the other end of the bracket body 610 extends along the first direction to the vicinity of the connection hole 117 and is connected to the sealing block 410 to form an integral structure.

[0127] In this way, the sealing block 410 can be integrated with the bracket body 610 into one device, reducing the number of devices in the key sealing structure, which is conducive to simplifying the installation process and improving production efficiency. In addition, since one end of the bracket body 610 is fixed in the first groove 112, it can limit the position of the sealing block 410 connected thereto, preventing the sealing block 410 from sliding in the connecting hole 117, thereby improving the sealing reliability.

[0128] Fig.11A This is a second structural schematic diagram of the seal provided in an embodiment of the present application.

[0129] Fig. 11B It is a schematic diagram of the cooperation between the seal, the connection hole and the flexible cable provided in the embodiment of the present application.

[0130] like Fig.11A and Fig. 11B In some embodiments, the seal 400 may include a second sealing ring 430 .

[0131] The second sealing ring 430 may be an annular sealing ring that matches the cross-sectional shape of the connecting hole 117, and may be made of a material having a certain elasticity, such as rubber or resin. The second sealing ring 430 is a solid structure as a whole, and is disposed in the connecting hole 117. The size of the second sealing ring 430 is larger than the size of the connecting hole 117, so that the second sealing ring 430 can form an interference fit with the connecting hole 117 under the pressure of the connecting hole 117.

[0132] The second sealing ring 430 may form a threading hole 431 along the first direction. The flexible flat cable 300 is inserted into the threading hole 431 and forms an interference fit in the threading hole 431. It is understandable that in order to enable the threading hole 431 to form an interference fit with the flexible flat cable 300, the shape of the threading hole 431 should match the shape of the flexible flat cable 300. Generally speaking, the flexible flat cable 300 is usually a flat cable with a certain width, so the threading hole 431 can be a flat hole with a certain width. The width of the threading hole 431 can be equal to or slightly larger than the width of the flexible flat cable 300 to ensure that the flexible flat cable 300 will not curl or deform in the threading hole 431. In this way, after the second sealing ring 430 is installed in the connecting hole 117, the size of the threading hole 431 can be compressed under the pressure of the connecting hole 117, so that the threading hole 431 forms an interference fit with the flexible flat cable 300.

[0133] The seal 400 provided in the embodiment of the present application utilizes the interference fit formed between the second sealing ring 430 and the connecting hole 117, and the interference fit formed between the second sealing ring 430 and the flexible flat cable 300 to seal the connecting hole 117, thereby preventing the liquid in the first groove 112 from entering the second groove 113 from the connecting hole 117, thereby achieving a sealing effect.

[0134] Fig.12 It is a structural schematic diagram of the second limiting bracket in the key sealing structure provided in an embodiment of the present application.

[0135] like Fig.12 As shown, when the sealing member 400 includes the second sealing ring 430, the key sealing structure includes a second limiting bracket 700. Different from the first limiting bracket 600 and the device for blocking the connection hole 117 (for example, the sealing block 410) being an integrated structure, the second limiting bracket 700 and the second sealing ring 430 for blocking the connection hole 117 are independent structures.

[0136] Exemplarily, the second position-limiting bracket 700 may include a bracket body 610. The bracket body 610 may be a strip-shaped structure. One end of the bracket body 610 is away from the connection hole 117 and is fixed in the first groove 112; the other end of the bracket body 610 extends along the first direction to the vicinity of the connection hole 117, and may not be fixed or may be fixed in the first groove 112.

[0137] Thus, although the second sealing ring 430 and the second limiting bracket 700 are independent structures, compared with Fig. 10A In terms of the number of devices in the seal 400 shown, Fig.11A The seal 400 shown includes only one component, namely the second sealing ring 430 , which is smaller in number. Therefore, the number of components in the key sealing structure is also reduced, which is beneficial to simplifying the installation process and improving production efficiency.

[0138] Fig.13 It is a structural schematic diagram of the guide rod in the key sealing structure provided in the embodiment of the present application.

[0139] It is understandable that when the user presses the button 200, the pressing state of the button 200 is transmitted to the mainboard of the electronic device in the form of an electrical signal. Therefore, a switch device ( Fig.13 The switch device may be disposed opposite to the key 200 along the pressing direction of the key 200, for example, disposed on the side wall of the first groove 112 opposite to the key 200. When the user presses the key 200, the switch device is closed, thereby generating an electrical signal.

[0140] To achieve this goal, Fig.13 As shown, a guide rod 800 may also be provided in the first groove 112. The guide rod 800 is located between the bracket body 610 and the groove bottom surface 115 of the first groove 112, so that the bracket body 610 can limit the displacement of the guide rod 800 along the second direction to prevent the guide rod 800 from being out of the designed position. Along the second direction, the guide rod 800 may include a first end 810 facing the button 200, and a second end 820 facing the switch device. Among them, the first end 810 of the guide rod 800 abuts against the button 200. When the button 200 is pressed, the guide rod 800 is displaced along the second direction with the button 200, so that the second end 820 of the guide rod 800 abuts against the switch device and closes the switch device.

[0141] In some implementations, the guide rod 800 may include at least one limiting groove 830, and the limiting groove 830 may be opened along the z-axis direction. Accordingly, the bracket body 610 may include a limiting piece 620 corresponding to the limiting groove 830, and the limiting piece 620 may be embedded in the limiting groove 830. Among them, along the second direction, that is, the pressing direction of the key 200, the width of the limiting groove 830 is greater than the thickness of the limiting piece 620. In this way, the guide rod 800 can be displaced relative to the bracket body 610 along the second direction, and when the inner wall of the limiting groove 830 abuts against the limiting piece 620, the guide rod 800 will not continue to be displaced. Therefore, the limiting groove 830 cooperates with the limiting piece 620 to limit the pressing depth of the key 200 and prevent the key hole 116 from coming out of the key hole 116.

[0142] Exemplarily, the guide rod 800 may include two limit grooves 830, and the two limit grooves 830 may be arranged at both ends of the guide rod 800 along the first direction. Correspondingly, the bracket body 610 may include two limit pieces 620, and the positions of the two limit pieces 620 correspond to the two limit grooves 830 one by one, and are respectively embedded in their corresponding limit grooves 830. In this way, the limit grooves 830 cooperate with the limit pieces 620, which can not only limit the displacement degree of the guide rod 800 along the first direction, but also limit the displacement degree of the guide rod 800 along the second direction, so as to prevent the guide rod 800 from deviating from its designed position.

[0143] Fig.14A and Fig. 14B It is a schematic diagram of the installation of the first groove and the bracket body provided in an embodiment of the present application.

[0144] In some embodiments, Fig.14A and Fig. 14B As shown, the first groove 112 also includes a bracket fixing seat 120 .

[0145] The bracket fixing seat 120 can be arranged at one end of the first groove 112 away from the connecting hole 117, and form a certain height along the z-axis direction from the groove bottom surface 115 of the first groove 112. A sink groove 121 is arranged on the top of the bracket fixing seat 120, and a threaded hole 122 is arranged in the sink groove 121. The end of the bracket body 610 away from the connecting hole 117 also includes a limit ring 630, and the limit ring 630 is located in the sink groove 121.

[0146] The shape of the sink 121 matches the shape of the stop ring 630, and the size of the sink 121 can be equal to or greater than the size of the stop ring 630, so that the stop ring 630 can be placed in the sink 121. Exemplarily, the stop ring 630 can be a circular ring, and correspondingly, the sink 121 can be a circular groove. The inner ring diameter of the stop ring 630 can be greater than or equal to the nominal diameter of the threaded hole 122. After the stop ring 630 is placed in the sink 121, the inner ring of the stop ring 630 can be coaxial with the threaded hole 122 of the sink 121.

[0147] In this way, the bracket body 610 can be fixed to the bracket fixing seat 120 by screwing the screws into the limiting ring 630 and the threaded hole 122 to limit the displacement degree of the guide rod 800.

[0148] Fig.15A and Fig. 15B It is a structural schematic diagram of the sealing glue line in the key sealing structure provided in an embodiment of the present application.

[0149] like Fig.15A and Fig. 15BAs shown, in some embodiments, the key sealing structure further includes: a sealing glue line 900 coated on the first surface 114 .

[0150] The sealant line 900 can be distributed at least on the outer edge of the first groove 112. In this way, after the back cover of the electronic device is buckled with the first surface 114, the sealant line 900 can block the gap between the outer edge of the first groove 112 and the back cover, thereby preventing the liquid entering the first groove 112 from entering the interior of the electronic device through the gap between the outer edge of the first groove 112 and the back cover.

[0151] To facilitate description of the distribution of the sealant line 900, the various regions on the first surface 114 located at the outer edge of the first groove 112 can be described separately, for example, at least described as: a first region 1141 and a second region 1142. The first region 1141 is located on the opposite side of the second groove 113, and the second region 1142 is located on the opposite side of the appearance surface 111 of the middle frame 100.

[0152] In addition, the area between the first groove 112 and the second groove 113 may also be described as a third area 1143 .

[0153] In addition, each area on the first surface 114 located at the outer edge of the second groove 113 can also be described separately, for example, at least can be described as: a fourth area 1144 and a fifth area 1145. The fourth area 1144 is located between the second groove 113 and the appearance surface 111 of the middle frame 100, and the fifth area 1145 is located on the opposite side of the first groove 112.

[0154] In some implementations, the sealant line 900 can be continuously routed in the first area 1141, the second area 1142, the third area 1143, the fourth area 1144 and the fifth epitaxial area on the first surface 114 to achieve continuous distribution in the above-mentioned areas and form a "2"-shaped routing layout.

[0155] Generally speaking, the middle frame side wall 110 and the edge of the back cover 30 can usually be glued together. In the embodiment of the present application, the sealant lines of the first area 1141, the second area 1142 and the third area 1143 at the outer edge of the first groove 112, and the glue between the middle frame side wall 110 and the edge of the back cover 30 can block the gap between the back cover 30 and the first surface 114, thereby forming a sealed area between the first groove 112 and the back cover 30. In this way, the liquid entering the first groove 112 from the button hole 116 will not flow into other areas from between the back cover 30 and the first surface 114, thereby achieving waterproof sealing.

[0156] In addition, the sealant line 900 also forms a gap on the side of the second groove 113 away from the exterior surface 111, and the gap is interconnected with other areas between the middle frame 100 and the back cover 30. Then, the flexible cable 300 can pass through this gap, extend from the side of the second groove 113 away from the exterior surface 111 to the outside of the second groove 113, and continue to run toward the mainboard. It can be seen that the key sealing structure provided in the embodiment of the present application can also avoid dispensing glue or setting back glue between the flexible cable 300 and the back cover 30, which can eliminate the problems of poor stability and consistency of dispensing glue and back glue, and also eliminate the problem of difficult battery disassembly caused by dispensing glue and back glue.

[0157] An embodiment of the present application provides an electronic device. The electronic device may be, for example, a non-folding screen device, such as a non-folding screen mobile phone, a tablet computer, a large screen display device, a personal computer, etc. The electronic device may be a folding screen device, such as a folding screen mobile phone, a scroll screen mobile phone, etc. The electronic device may also be any other form of electronic device with a biometric identification module integrated on the key. The electronic device may include one or more key sealing structures provided by the embodiments of the present application and their various implementations to prevent liquids such as water from entering the interior of the electronic device from the key hole, and can accommodate batteries with larger capacity and larger size.

[0158] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application to obtain other embodiments based on the several embodiments provided in the present application, and these embodiments do not exceed the protection scope of the present application.

[0159] The above specific implementation methods further illustrate the purpose, technical solutions and beneficial effects of the present application in detail. It should be understood that the above are only specific implementation methods of the present application and are not used to limit the protection scope of the present application. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the present application should be included in the protection scope of the present application.

Claims

1. A key sealing structure, characterized in that: include: A middle frame (100), the middle frame (100) comprising a middle frame side wall (110) extending along a first direction; A first groove (112) and a second groove (113), wherein the first groove (112) and the second groove (113) are arranged on the middle frame side wall (110) at intervals along the first direction, and a connecting hole (117) is arranged between the first groove (112) and the second groove (113); A button hole (116), the button hole (116) being provided on the middle frame side wall (110) and being in communication with the first groove (112); A button (200), the button (200) being arranged in the button hole (116), and the button (200) comprising a biometric feature recognition module (210); a flexible flat cable (300), one end of the flexible flat cable (300) being located in the first groove (112) and connected to the biometric feature recognition module (210), and the other end of the flexible flat cable (300) passing through the connection hole (117) and the second groove (113) in sequence and extending to the outside of the second groove (113); a sealing member (400), the sealing member (400) being arranged in the connecting hole (117) and used for sealing the connecting hole (117); The sealant (500) is filled in the second groove (113) and submerges the connection hole (117).

2. The key sealing structure according to claim 1, characterized in that: The sealing member (400) comprises a sealing block (410) and a first sealing ring (420); The sealing block (410) is arranged in the connecting hole (117); The first sealing ring (420) is sleeved on the sealing block (410) and is located between the sealing block (410) and the inner wall of the connecting hole (117); The flexible cable (300) is inserted between the first sealing ring (420) and the inner wall of the connecting hole (117); The radial width of the first sealing ring (420) is greater than the distance between the sealing block (410) and the inner wall of the connecting hole (117), so that the first sealing ring (420) forms an interference fit with the connecting hole (117) under the pressure of the sealing block (410) and the connecting hole (117).

3. The key sealing structure according to claim 1, characterized in that: The sealing member (400) comprises a second sealing ring (430); The second sealing ring (430) is disposed in the connecting hole (117) and comprises a threading hole (431) formed along the first direction; The flexible flat cable (300) is inserted into the threading hole (431) to form an interference fit with the threading hole (431); The size of the second sealing ring (430) is larger than the size of the connecting hole (117), so that the second sealing ring (430) forms an interference fit with the connecting hole (117) under the pressure of the connecting hole (117).

4. The key sealing structure according to claim 2, characterized in that: Also includes: A first limiting bracket (600); The first limiting bracket (600) comprises a bracket body (610) and the sealing block (410); The support body (610) is in the first groove (112) and is used to limit the displacement range of the button (200) when it is pressed; The support body (610) and the sealing block (410) are connected to form an integrated structure.

5. The key sealing structure according to claim 3, characterized in that: Also includes: A second limiting bracket (700); The second position-limiting bracket (700) comprises a bracket body (610); The support body (610) is in the first groove (112) and is used to limit the displacement range of the button (200) when it is pressed.

6. The key sealing structure according to claim 4 or 5, characterized in that: One end of the bracket body (610) away from the connecting hole (117) is fixed in the first groove (112).

7. The key sealing structure according to any one of claims 1 to 6, characterized in that: The middle frame side wall (110) comprises an appearance surface (111) and a first surface (114) for bonding with a back cover of an electronic device; The first groove (112) and the second groove (113) are opened on the first surface (114); The button hole (116) is opened on the exterior surface (111) and is connected to the side wall of the first groove (112).

8. The key sealing structure according to claim 7, characterized in that: Also includes: A sealant line (900) coated on the first surface (114); The sealant lines (900) are continuously distributed in a first area (1141), a second area (1142), a third area (1143), a fourth area (1144) and a fifth area (1145) of the first surface (114); The first region (1141) and the second region (1142) are regions on the outer edge of the first groove (112), wherein the first region (1141) is located on the opposite side of the second groove (113), and the second region (1142) is located on the opposite side of the appearance surface (111); The third area (1143) is located between the first groove (112) and the second groove (113); The fourth region (1144) and the fifth region (1145) are regions on the outer edge of the second groove (113), wherein the fourth region (1144) is located between the second groove (113) and the appearance surface (111), and the fifth region (1145) is located on the opposite side of the first groove (112).

9. The key sealing structure according to claim 4 or 5, characterized in that: Also includes: Guide rod (800); The guide rod (800) is disposed in the first groove (112) and is located between the bracket body (610) and the bottom surface of the first groove (112); Along the pressing direction of the button (200), one end of the guide rod (800) abuts against the button (200), and the other end is used to close the switch device corresponding to the button (200) when the button (200) is pressed.

10. The key sealing structure according to claim 9, characterized in that: The guide rod (800) further comprises at least one limiting groove (830); The bracket body (610) further comprises a limiting piece (620) arranged corresponding to the limiting groove (830), and the limiting piece (620) is embedded in the limiting groove (830); Along the pressing direction of the button (200), the width of the limiting groove (830) is greater than the thickness of the limiting plate (620).

11. The key sealing structure according to claim 4 or 5, characterized in that: A bracket fixing seat (120) is also provided in the first groove (112), and the bracket fixing seat (120) is located at an end of the first groove (112) away from the connecting hole (117); A sink groove (121) is provided at the top of the bracket fixing seat (120), and a threaded hole (122) is provided in the sink groove (121); The end of the bracket body (610) away from the connecting hole (117) further comprises a limiting ring (630), and the limiting ring (630) is located in the sink (121); The support body (610) is fixed to the support fixing seat (120) by screws screwed into the limiting ring (630) and the threaded hole (122).

12. The key sealing structure according to claim 8, characterized in that: The flexible cable (300) extends from a side of the second groove (113) away from the exterior surface (111) to the outside of the second groove (113).

13. The key sealing structure according to any one of claims 1 to 12, characterized in that: The biometric feature recognition module (210) is a fingerprint recognition module.

14. An electronic device, characterized in that: include: The key sealing structure according to any one of claims 1 to 13.

Images