Terminal device

Abstract

A terminal device comprises a shell, a fingerprint key assembly, a flexible circuit board and a support. The fingerprint key assembly is telescopically connected to the shell. The fingerprint key assembly comprises a fingerprint module. The flexible circuit board is connected to the shell, one end of the flexible circuit board is electrically connected with the fingerprint module, and the other end of the flexible circuit board is used for being electrically connected with a mainboard in the shell. The support is connected to the shell, and at least part of the flexible circuit board abuts against the shell through pressure of the support. According to the terminal equipment provided by the invention, the extrusion force can be provided for the part, suspended or lapped on the shell, of the flexible circuit board through the bracket, so that the flexible circuit board is extruded on the corresponding structure in the shell through the extrusion force; therefore, the part, which cannot be directly positioned on the shell, of the flexible circuit board can be positioned through the extrusion force of the support, the problems of deviation, rollover and the like of the flexible circuit board are prevented, it can be guaranteed that the flexible circuit board has good assembling precision, and assembling consistency is guaranteed.

Description

Technical Field

[0001] This application relates to the technical field of electronic products, and particularly to a terminal device. Background Art

[0002] Fingerprint recognition devices are usually integrated in terminal devices such as mobile phones. The fingerprint recognition device can be used to recognize the user's fingerprint to achieve the functions of unlocking and authentication. In existing fingerprint recognition devices, there are generally flexible components, which are prone to problems such as displacement and side-turning during the assembly process into the whole machine, affecting the assembly consistency. Summary of the Utility Model

[0003] In view of this, this application provides a terminal device to solve the problem of poor assembly consistency of the fingerprint key assembly in the above-mentioned prior art.

[0004] In a first aspect, this application provides a terminal device, which includes: a housing, a fingerprint key assembly, a flexible circuit board, and a bracket. The fingerprint key assembly is connected to the housing, and the fingerprint key assembly includes a fingerprint module. The flexible circuit board is connected to the housing. One end of the flexible circuit board is electrically connected to the fingerprint module, and the other end of the flexible circuit board is used to be electrically connected to the main board in the housing. The bracket is connected to the housing, and at least part of the flexible circuit board is pressed against the housing by the pressure of the bracket.

[0005] For the terminal device provided in this application, the bracket can provide a squeezing force to the part of the flexible circuit board that is suspended or lapped on the housing, so that the flexible circuit board can be squeezed against the corresponding structure in the housing through the squeezing force, thereby the part of the flexible circuit board that cannot be directly positioned on the housing can be positioned through the squeezing force of the bracket, preventing problems such as displacement and side-turning of the flexible circuit board, and ensuring that the flexible circuit board has better assembly accuracy and assembly consistency.

[0006] In a possible design, a groove is provided on the housing, and the bracket is arranged in the groove. At least part of the flexible circuit board is arranged in the groove and is pressed against the inner wall of the groove by the pressure of the bracket. Among them, the groove can ensure the reliability of the bracket installed on the housing. At the same time, the inner wall of the groove can provide support for the flexible circuit board, so that part of the flexible circuit board can be pressed tightly against the inner wall of the groove through the squeezing force provided by the bracket, thereby ensuring the stability of the position of the flexible circuit board on the housing, ensuring the installation accuracy, and avoiding problems such as displacement and side-turning.

[0007] In one possible design, at least a portion of the flexible printed circuit board located within the recess extends along the thickness of the housing and, due to pressure from the bracket, abuts against the inner wall of the recess. Thus, when the flexible printed circuit board is pressed by the bracket, the direction of the bracket's pressure on the flexible printed circuit board can be perpendicular to the surface of the flexible printed circuit board being pressed, thereby reliably pressing the flexible printed circuit board between the bracket and the retaining wall, ensuring the stability of the flexible printed circuit board.

[0008] In one possible design, the bracket includes a first flexible rib, through which the bracket abuts the flexible circuit board and the housing. The overall width of the bracket, including the first flexible rib, can be slightly larger than the width of the recess. During installation of the bracket into the recess, the first flexible rib interferes with the flexible circuit board within the recess. The first flexible rib elastically deforms under pressure between the bracket and the flexible circuit board. The elastic force of this deformation ensures reliable compression of the flexible circuit board, thereby ensuring a stable installation position for the flexible circuit board.

[0009] In one possible design, the first flexible rib is disposed around the outer wall of the bracket in a direction perpendicular to the thickness of the bracket. The first flexible rib is disposed around the circumference of the bracket so that a portion of the first flexible rib can press against the flexible circuit board within the groove, thereby ensuring reliable fixation of the flexible circuit board. Simultaneously, the portion of the first flexible rib not pressed against the flexible circuit board can press against the inner wall of the groove, thereby ensuring reliable fixation of the bracket within the groove.

[0010] In one possible design, a sealing groove is provided on the inner wall of the groove, and at least a portion of the first flexible rib is snapped into the sealing groove. After the bracket is installed in the groove, the first flexible rib can snap into the sealing groove, and the inner walls of the sealing groove can be located on both sides of the first flexible rib in the thickness direction of the bracket. This allows the inner walls of the sealing groove to limit the first flexible rib in the thickness direction of the bracket, thereby preventing the bracket from falling out of the groove.

[0011] In one possible design, the bracket further includes a second flexible rib, spaced apart from the first flexible rib along the thickness of the bracket and extending along the length of the bracket. The bracket abuts the flexible printed circuit board via the second flexible rib. The first and second flexible ribs can press against different locations on the flexible printed circuit board along the thickness of the bracket, thereby effectively ensuring that the flexible printed circuit board is securely pressed between the bracket and the housing, and maintaining a stable position of the flexible printed circuit board.

[0012] In a possible design, the bracket includes a body, a first support portion, and a second support portion. The first support portion and the second support portion are both connected to the same surface of the body, and there is a spacing between the first support portion and the second support portion for passing through the flexible circuit board. Among them, the first support portion and the second support portion can increase the overall strength of the bracket and ensure the reliability of the structure. At the same time, a certain distance is maintained between the first support portion and the second support portion, so that the flexible circuit board can be electrically connected to the fingerprint module after passing through between the first support portion and the second support portion, facilitating the setting of the flexible circuit board.

[0013] In a possible design, the bracket is integrally formed, that is, during the processing and manufacturing process of the bracket, the corresponding first support portion and second support portion can be integrally formed, so as to ensure the reliability of the overall structure of the bracket and facilitate the manufacturing process.

[0014] In a possible design, a protruding portion is provided on the bracket, and a limiting groove is provided on the housing. The protruding portion is snap-fitted into the limiting groove. Among them, when the bracket is installed into the groove, at least part of the protruding portion can be snapped into the limit, and the side surface of the protruding portion can cooperate with the inner wall of the limiting groove, so as to restrain the torsional deformation of the protruding portion in all directions through the limiting groove, and further avoid problems such as warping and tipping of the bracket.

[0015] In a possible design, the protruding portion includes a first protrusion and a second protrusion. The first protrusion is provided on the first support portion, and the second protrusion is provided on the second support portion, and the first protrusion and the second protrusion are respectively located at both ends of the bracket in the length direction. The limiting groove includes a first groove and a second groove. The first protrusion is in limiting cooperation with the first groove, and the second protrusion is in limiting cooperation with the second groove. When the bracket is installed into the groove, the first protrusion can be snap-fitted into the first groove, and the second protrusion can be snap-fitted into the second groove, so as to prevent warping, tipping and other deformations of the two end portions of the bracket in the length direction, and ensure that the bracket is reliably installed in the groove.

[0016] In a possible design, a first reinforcing member is embedded in the body, and the position of the first reinforcing member on the body can be the portion of the body corresponding to the area between the first support portion and the second support portion, so as to ensure that the body has a high structural strength through the first reinforcing member, avoid force deformation, and further ensure that the bracket and the housing can be installed and fixed, ensuring installation consistency.

[0017] In a possible design, the terminal device further includes a second reinforcing member, the second reinforcing member is connected to the flexible circuit board, and at least part of the flexible circuit board abuts against the housing through the second reinforcing member. Wherein, the second reinforcing member is located between the flexible circuit board and the inner wall of the groove, so that the second reinforcing member can provide support for the flexible circuit board, and at the same time improve the structural strength of the position on the flexible circuit board where the bracket pressure is applied, avoiding being crushed.

[0018] In a possible design, the housing includes a cavity and a retaining wall, and the cavity and the groove are separated by the retaining wall. At least part of the flexible circuit board is disposed in the cavity, at least part of the flexible circuit board bypasses the retaining wall and extends into the groove, and at least part of the flexible circuit board located in the groove abuts against the retaining wall under the pressure of the bracket. Wherein, at the position of the retaining wall, it is difficult for the flexible circuit board to be connected to the retaining wall by gluing, and part of the flexible circuit board needs to bypass the retaining wall along the surface of the retaining wall before extending into the groove. The flexible circuit board at the position of the retaining wall will be in a suspended or lapped state and cannot be effectively fixed, and is easy to move relative to the retaining wall. When the bracket is installed in the groove, the bracket can squeeze part of the flexible circuit board located in the groove and can press part of the flexible circuit board against the retaining wall, thereby effectively fixing the part of the flexible circuit board suspended or lapped on the retaining wall and ensuring the stability of the position of the flexible circuit board.

[0019] In a possible design, the fingerprint key assembly further includes an elastic member, the elastic member is connected to the side of the flexible circuit board facing away from the fingerprint module, and a trigger portion is provided on the side of the elastic member facing away from the fingerprint module. The elastic member can be made of materials such as rubber and silica gel with certain elastic deformation ability. The side of the elastic member away from the fingerprint module can be supported on the housing. When the fingerprint module is pressed by hand, the fingerprint module moves towards the inside of the housing, and the elastic member can be elastically deformed under pressure. In this state, the trigger portion on the elastic member can squeeze the switch assembly inside the terminal device, so that the function of the power button can be realized, that is, functions such as power on, power off, screen lock, and screen on can be realized. When the pressing force applied to the fingerprint module is cancelled, the elastic member can recover its elastic deformation and push the fingerprint module outwards from the housing to realize the reset of the fingerprint key assembly, and the switch assembly inside the terminal device can also be reset.

[0020] In a possible design, the bracket is made of a flexible material. Exemplarily, the flexible material can be, but is not limited to, rubber, silica gel, etc. These materials can endow the bracket with a certain degree of flexibility, avoiding rigid contact between the bracket and the flexible circuit board and causing scratches on the flexible circuit board. At the same time, the bracket made of flexible material has a certain elastic deformation ability, which can facilitate the assembly of the bracket into the groove. Meanwhile, it can be extruded on the housing and the flexible circuit board by interference, ensuring the stability of the installation position of the bracket and the position of the flexible circuit board. At the same time, a seal can be formed between the bracket and the housing and the flexible circuit board by interference, which is beneficial to preventing moisture from penetrating into the interior of the housing from the mating interface between the bracket and the housing.

[0021] In a possible design, the terminal device further includes a sealant, which is filled in the groove and seals the gap between the bracket and the inner wall of the groove. Exemplarily, the sealant can be a liquid glue. The liquid glue has a certain fluidity and can flow to the mating gap between the bracket and the groove. After the glue solidifies, it can seal the mating interface between the bracket and the groove, thereby preventing moisture from penetrating into the interior of the housing through the mating gap between the bracket and the groove, blocking the path of external moisture from penetrating into the interior of the housing from the gap between the fingerprint key assembly and the mounting hole, and thus avoiding moisture entering the interior of the housing and contacting electronic components such as the main board and flexible circuit board in the housing. At the same time, the glue can fill the groove, thereby being able to coat the bracket and the flexible circuit board in the groove, isolating moisture from contacting the flexible circuit board in the groove. Thus, problems such as short circuit and damage of the flexible circuit board and other electronic components in the housing due to contact with moisture can be avoided.

[0022] In a possible design, the thickness of the bracket is less than the depth of the groove. After the bracket is installed in the groove, the end face of the bracket is lower than the end face of the groove, that is, the bracket can be entirely located in the groove. Thus, after filling a sealant such as glue into the groove, the sealant can coat the bracket and the flexible circuit board in the groove as a whole, effectively isolating water vapor from contacting the flexible circuit board in the groove and preventing water vapor from penetrating into the interior of the housing from the groove.

[0023] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the present application. Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 Schematic diagram of the structure of the terminal device provided by the embodiment of the present application;

[0026] Figure 2 Partial exploded view of the terminal device provided by an embodiment of the present application;

[0027] Figure 3 Partial schematic diagram of the terminal device provided by the embodiment of the present application;

[0028] Figure 4 Partial exploded view of the terminal device provided by another embodiment of the present application;

[0029] Figure 5 Schematic diagram of the cooperation between the flexible circuit board and the fingerprint key assembly provided by the embodiment of the present application;

[0030] Figure 6 In an embodiment provided by the present application Figure 3 Cross-sectional view at A-A;

[0031] Figure 7 In another embodiment provided by the present application Figure 3 Cross-sectional view at A-A;

[0032] Figure 8 Schematic diagram of the structure of the bracket provided by the embodiment of the present application from one perspective;

[0033] Figure 9 Schematic diagram of the structure of the bracket provided by the embodiment of the present application from another perspective;

[0034] Figure 10 For Figure 8 Cross-sectional view at C-C;

[0035] Figure 11 In an embodiment provided by the present application Figure 3 Stereogram after cutting at A-A;

[0036] Figure 12 Partial schematic diagram of the housing provided by the embodiment of the present application.

[0037] Reference numerals:

[0038] 100 - Terminal device;

[0039] 1 - Housing;

[0040] 11 - Mounting hole;

[0041] 12 - Groove;

[0042] 13 - Cavity;

[0043] 14 - Retaining wall;

[0044] 15 - Sealing groove;

[0045] 16 - Limiting groove;

[0046] 161 - First groove;

[0047] 162 - Second groove;

[0048] 17 - Rib;

[0049] 2 - Fingerprint key assembly;

[0050] 21 - Fingerprint module;

[0051] 22 - Elastic member;

[0052] 221 - Trigger part;

[0053] 3 - Flexible circuit board;

[0054] 31 - Connector;

[0055] 32 - Second reinforcing member;

[0056] 4 - Bracket;

[0057] 41 - First flexible rib;

[0058] 42 - Second flexible rib;

[0059] 43 - Body;

[0060] 44 - First support part;

[0061] 45 - Second support part;

[0062] 46 - Protrusion;

[0063] 461 - First protrusion;

[0064] 462 - Second protrusion;

[0065] 47 - First reinforcing member;

[0066] Z - Thickness direction;

[0067] X - Length direction;

[0068] Y - Width direction. Detailed implementation manners

[0069] For a better understanding of the technical solutions of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0070] It should be clear that the described embodiments are only some embodiments of the present application, rather than all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0071] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The singular forms of "a", "the" and "said" used in the embodiments of the present application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0072] It should be understood that the term "and / or" used herein is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally indicates that the associated objects before and after are in an "or" relationship.

[0073] In the description of the present application, unless otherwise clearly specified and limited, the terms "first" and "second" are only used for the purpose of description and cannot be understood as indicating or implying relative importance; unless otherwise specified or stated, the term "plural" means two or more; the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0074] Figure 1 The structural schematic diagram of the terminal device provided for the embodiments of the present application is as Figure 1 As shown, the embodiments of the present application provide a terminal device 100, and the terminal device 100 may be such as Figure 1The mobile phone shown may also be a tablet computer, a desktop computer, a laptop computer, a handheld computer, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook, a cellular phone, a personal digital assistant (PDA), an augmented reality (AR) device, a virtual reality (VR) device, an artificial intelligence (AI) device, a wearable device, a vehicle-mounted device, a smart home device, and / or a smart city device. The embodiments of the present application do not impose special restrictions on the specific type of the terminal device 100. In this embodiment, for the sake of convenience of description, the terminal device 100 is taken as Figure 1 the mobile phone shown as an example for description, as Figure 1 shown, the mobile phone has a thickness direction Z, a length direction X, and a width direction Y, and the mobile phone includes a housing 1, and a fingerprint key assembly 2 is arranged on the side surface of the housing 1.

[0075] In the related art, for a terminal device adopting a fingerprint recognition device, the fingerprint recognition device generally includes a flexible component, such as a flexible printed circuit (FPC), etc. Figure 2 This is a partial exploded view of the terminal device provided by an embodiment of the present application. As Figure 2 shown, the terminal device includes a housing 1, a fingerprint key assembly 2, and a flexible printed circuit board 3. The fingerprint key assembly 2 is arranged on the side surface of the housing 1. The flexible printed circuit board 3 can be installed in the housing 1 and can be electrically connected to the fingerprint key assembly 2. Since the structure of the housing 1 is relatively complex, there are many flat areas and uneven areas. In the flat areas, the flexible printed circuit board 3 can be bonded to the housing 1 by means of adhesion. However, in the uneven areas, such as Figure 2 the area where the rib 17 shown in is located, the rib 17 protrudes from the surface of the housing 1. At the rib 17, the flexible printed circuit board 3 needs to bypass the rib 17 from the top of the rib 17 and then be electrically connected to the fingerprint key assembly 2. Since the rib 17 protrudes, it is difficult for the flexible printed circuit board 3 to be reliably connected to the rib 17 by means of adhesion. Generally speaking, the position on the flexible printed circuit board 3 opposite to the rib 17 (such as Figure 2 the position of the area B shown in) needs to be lapped or suspended on the rib 17. These suspended or lapped parts on the flexible printed circuit board 3 cannot be reliably fixed, and the position accuracy is poor. When the whole machine is assembled, the flexible printed circuit board 3 is prone to problems such as displacement and side turning, affecting the consistency of the whole machine assembly.

[0076] Based on this, an embodiment of the present application provides a terminal device. Figure 3 It is a partial schematic diagram of the terminal device provided by the embodiment of the present application. As Figure 3 shown, the terminal device includes a housing 1, a fingerprint key assembly 2, a flexible circuit board 3, and a bracket 4. Among them, for a mobile phone as the terminal device, the housing 1 can be the middle frame of the mobile phone, and the middle frame can be used to carry components such as the fingerprint key assembly 2, the flexible circuit board 3, the bracket 4, and the screen. The bracket 4 is arranged on the housing 1. After the flexible circuit board 3 is installed on the housing 1, the part of the flexible circuit board 3 that is suspended or lapped on the housing 1 can be squeezed and fixed on the housing 1, so as to ensure the stability of the flexible circuit board 3 on the housing 1.

[0077] Figure 4 It is a partial exploded view of the terminal device provided by another embodiment of the present application. As Figure 4 shown, the housing 1 can be provided with a mounting hole 11. The mounting hole 11 can be arranged on the side of the housing 1. The fingerprint key assembly 2 can be installed in the mounting hole 11. When the user presses the fingerprint key assembly 2, the fingerprint key assembly 2 can expand and contract in the mounting hole 11. Among them, the fingerprint key assembly 2 can include a fingerprint module 21. A fingerprint chip is arranged inside the fingerprint module 21. The fingerprint chip can be a capacitive fingerprint chip, and different fingerprints are identified by using the principle that the capacitance values corresponding to fingerprints with different shapes of unevenness are different. By identifying fingerprints, functions such as unlocking and authentication can be realized.

[0078] Figure 5 It is a schematic diagram of the cooperation between the flexible circuit board 3 and the fingerprint key assembly 2 provided by the embodiment of the present application. As Figure 5As shown, the fingerprint key assembly 2 may further include an elastic member 22. The elastic member 22 may be connected to the side of the flexible circuit board 3 facing away from the fingerprint module 21, that is, the fingerprint module 21, the flexible circuit board 3, and the elastic member 22 are stacked in sequence. Among them, the elastic member 22 may be made of materials such as rubber or silica gel with certain elastic deformation ability. The side of the elastic member 22 away from the fingerprint module 21 may be supported on the housing 1. When the fingerprint module 21 is pressed by a hand, the fingerprint module 21 moves towards the inside of the housing 1. A trigger portion 221 may be provided on the side of the elastic member 22 facing away from the fingerprint module 21. The elastic member 22 may be elastically deformed under pressure. In this state, the trigger portion 221 on the elastic member 22 may squeeze the switch assembly inside the terminal device, thereby realizing the function of the power button, that is, functions such as power on, power off, screen lock, and screen on can be realized. When the pressing force applied to the fingerprint module 21 is cancelled, the elastic member 22 may recover its elastic deformation and push the fingerprint module 21 outwards from the housing 1 to realize the reset of the fingerprint key assembly 2, and the switch assembly inside the terminal device can also be reset. Among them, the trigger portion 221 may be a structure such as a rubber block, which can be adhered to the elastic member 22, or may be integrally formed with the elastic member 22, and no limitation is made here.

[0079] The flexible circuit board 3 is a highly reliable and flexible printed circuit board made of polyimide or polyester film as the substrate, with the characteristics of high wiring density, light weight, thin thickness, and good bending property, and can realize reliable electrical connection in scenarios with narrow space or complex environment. In this embodiment, the flexible circuit board 3 may be connected to the housing 1. Exemplarily, at least part of the flexible circuit board 3 may be adhesively fixed to the housing 1 by an adhesive. One end of the flexible circuit board 3 may be electrically connected to the fingerprint module 21. Exemplarily, one end of the flexible circuit board 3 may be welded to the fingerprint module 21 to achieve electrical connection, and then the gaps around the welding position may be sealed by filling with glue to prevent external moisture such as sweat on the user's hand from entering the gaps and corroding the solder joints. As Figure 5 shown, the other end of the flexible circuit board 3 may be provided with a connector 31. The connector 31 may be a BTB (Board To Board) connector, which is used to be buckled on the main board inside the housing 1 to realize the electrical connection between the flexible circuit board 3 and the main board.

[0080] The bracket 4 can be connected to the housing 1. The bracket 4 can be used to position the flexible circuit board 3 to avoid problems such as displacement and tipping of the flexible circuit board 3 in the housing 1. Among them, when the flexible circuit board 3 is applied to terminal devices with a narrow internal space and a complex environment such as folding machines, as described above, the relatively flat parts in the terminal device can be adhesively fixed to the corresponding parts on the flexible circuit board 3 by gluing. However, it is difficult to fix the flexible circuit board 3 to the uneven parts in the terminal device by gluing. The flexible circuit board 3 is usually suspended or overlapped on the above-mentioned uneven parts. Exemplarily, as Figure 3 shown, the part of the flexible circuit board 3 located in area B is formed into an uneven structure. The part of the flexible circuit board 3 located in area B can be suspended or overlapped on some structures on the housing 1. These suspended or overlapped parts of the flexible circuit board 3 cannot be reliably fixed and are prone to problems such as displacement and tipping.

[0081] Therefore, in this embodiment, Figure 6 is Figure 3 the cross-sectional view at A-A in Figure 6 shown. As shown, the bracket 4 can provide a squeezing force to the part of the flexible circuit board 3 that is suspended or overlapped on the housing 1, so as to squeeze the flexible circuit board 3 against the corresponding structure in the housing 1 through the squeezing force. During the assembly process, the fingerprint key assembly 2 can be first installed in the mounting hole 11 of the housing 1, and the part of the flexible circuit board 3 that is aligned with the flat part in the housing 1 can be fixed by bonding. Then, the bracket 4 is installed at the set position in the housing 1, so that the corresponding part of the flexible circuit board 3 is squeezed between the bracket 4 and the housing 1 in an interference form between the bracket 4, the flexible circuit board 3 and the housing 1. Thus, the part of the flexible circuit board 3 that cannot be directly bonded to the housing 1 can be positioned through the squeezing force of the bracket 4, thereby preventing problems such as displacement and tipping of the flexible circuit board 3, and ensuring that the flexible circuit board 3 has better assembly accuracy and assembly consistency.

[0082] In one embodiment, as Figure 4As shown in the figure, a groove 12 can be provided on the housing 1, and the bracket 4 is disposed in the groove 12. At least part of the flexible circuit board 3 is disposed in the groove 12 and is abutted against the inner wall of the groove 12 by the pressure of the bracket 4. Among them, the fingerprint key assembly 2 can be installed on the side of the housing 1, and the main board is installed inside the housing 1. There is a certain distance between the main board and the fingerprint key assembly 2, and the main board and the fingerprint key assembly 2 can be electrically connected through the flexible circuit board 3. In order to position some parts of the flexible circuit board 3, the bracket 4 needs to be set at a certain position between the fingerprint key assembly 2 and the main board. Correspondingly, the groove 12 also needs to be set on the housing 1 at the position between the fingerprint key assembly 2 and the main board to facilitate cooperation with the bracket 4. The groove 12 can ensure the reliability of the installation of the bracket 4 on the housing 1. At the same time, the inner wall of the groove 12 can provide support for the flexible circuit board 3, so that some parts on the flexible circuit board 3 can be pressed against the inner wall of the groove 12 by the extrusion force provided by the bracket 4, thereby ensuring the stability of the position of the flexible circuit board 3 on the housing 1, ensuring the installation accuracy, and avoiding problems such as deviation and tipping.

[0083] In one embodiment, the material of the bracket 4 can be a flexible material. Exemplarily, the flexible material can be, but is not limited to, rubber, silica gel, etc. These materials can make the bracket 4 have a certain flexibility, avoid rigid contact between the bracket 4 and the flexible circuit board 3 and cause scratches on the flexible circuit board 3. At the same time, the bracket 4 made of flexible material has a certain elastic deformation ability, which can facilitate the assembly of the bracket 4 into the groove 12, and can be pressed against the housing 1 and the flexible circuit board 3 by interference, ensuring the stability of the installation position of the bracket 4 and the position of the flexible circuit board 3. At the same time, a seal can be formed between the bracket 4 and the housing 1 and the flexible circuit board 3 by interference, which is beneficial to preventing moisture from penetrating into the interior of the housing 1 from the mating interface between the bracket 4 and the housing 1.

[0084] In addition, in order to ensure that the fingerprint key assembly 2 can extend and retract normally in the mounting hole 11 of the housing 1, there will be a small gap between the fingerprint key assembly 2 and the mounting hole 11, and this gap is also likely to cause external moisture such as hand sweat to enter the housing 1. After the moisture comes into contact with electronic devices such as the flexible circuit board 3 and the main board in the housing 1, it will cause electrical failures. Therefore, in this embodiment, in order to achieve the IPX8 waterproof characteristic of the terminal device, after the bracket 4 is installed, a sealing member can be filled into the groove 12. Exemplarily, the sealing member can be liquid glue. The liquid glue has a certain fluidity and can flow to the mating gap between the bracket 4 and the groove 12. After the glue cures, it can seal the mating interface between the bracket 4 and the groove 12, thereby preventing moisture from penetrating into the housing 1 through the mating gap between the bracket 4 and the groove 12, blocking the path of external moisture from penetrating into the housing 1 through the gap between the fingerprint key assembly 2 and the mounting hole 11, and thus avoiding moisture from entering the housing 1 and coming into contact with electronic devices such as the main board and the flexible circuit board 3 in the housing 1. At the same time, the glue can fill the groove 12, thereby being able to coat the bracket 4 and the flexible circuit board 3 in the groove 12, isolating moisture from contacting the flexible circuit board 3 in the groove 12, and thus avoiding problems such as short circuit and damage of the flexible circuit board 3 and other electronic devices in the housing 1 due to contact with moisture.

[0085] In one embodiment, as Figure 6 shown, the terminal device further includes a second reinforcing member 32. The second reinforcing member 32 is connected to the flexible circuit board 3, and at least part of the flexible circuit board 3 located in the groove 12 can abut against the housing 1 through the second reinforcing member 32. That is to say, the second reinforcing member 32 is located between the flexible circuit board 3 and the inner wall of the groove 12, so that the second reinforcing member 32 can provide support for the flexible circuit board 3, and at the same time improve the structural strength of the position on the flexible circuit board 3 where the pressure from the bracket 4 is applied, avoiding being crushed.

[0086] In one embodiment, as Figure 6 shown, the thickness H1 of the bracket 4 can be less than the depth H2 of the groove 12. After the bracket 4 is installed in the groove 12, the end face of the bracket 4 is lower than the edge of the opening of the groove 12, that is, the bracket 4 can be entirely located in the groove 12. Thus, after filling a sealing member such as glue into the groove 12, the sealing member can entirely coat the bracket 4 and the flexible circuit board 3 in the groove 12, thereby effectively isolating water vapor from contacting the flexible circuit board 3 in the groove 12, and at the same time preventing water vapor from penetrating from the groove 12 into the housing 1.

[0087] In one embodiment, as Figure 6As shown, the housing 1 includes a cavity 13 and a retaining wall 14. The cavity 13 and the groove 12 are separated by the retaining wall 14. Among them, the cavity 13 can be used to arrange components such as a main board, a speaker module, and a camera module. The retaining wall 14 can be a structure integrally formed on the housing 1. One side of the retaining wall 14 can serve as the inner wall surface of the cavity 13, and the other side of the retaining wall 14 can serve as the inner wall surface of the groove 12. At least part of the flexible circuit board 3 can be arranged in the cavity 13. The cavity 13 has a flat part with a large area. At least part of the flexible circuit board 3 can be located in the cavity 13 to be electrically connected to the main board. At the same time, at least part of the flexible circuit board 3 located in the cavity 13 can be adhered to the flat part in the cavity 13, which can ensure the reliability of the fixation of the flexible circuit board 3 in the cavity 13. Since the flexible circuit board 3 also needs to be electrically connected to the fingerprint module 21, at least part of the flexible circuit board 3 bypasses the retaining wall 14 and extends into the groove 12, and can further extend from the groove 12 to the fingerprint key assembly 2 to be electrically connected to the fingerprint module 21. At the position of the retaining wall 14, it is difficult to connect the flexible circuit board 3 to the retaining wall 14 by means of adhesion. Part of the flexible circuit board 3 needs to bypass the retaining wall 14 along the surface of the retaining wall 14 before it can extend into the groove 12. The flexible circuit board 3 at the position of the retaining wall 14 will be in a suspended or lapped state and cannot be effectively fixed, and is prone to crosstalk relative to the retaining wall 14. When the bracket 4 is installed in the groove 12, the bracket 4 can squeeze part of the flexible circuit board 3 located in the groove 12 and can press part of the flexible circuit board 3 against the retaining wall 14, thereby effectively fixing the part of the flexible circuit board 3 suspended or lapped on the retaining wall 14 and ensuring the stability of the position of the flexible circuit board 3.

[0088] Figure 7 In another embodiment provided by the present application, in Figure 3 the cross-sectional view at A-A, as Figure 7 shown, at least part of the flexible circuit board 3 located in the groove 12 can extend in a direction forming a certain angle with the thickness direction Z of the housing 1 (such as Figure 7 the direction M in), that is, the extension direction of the part of the flexible circuit board 3 located in the groove 12 is not parallel to the thickness direction Z of the housing 1. Among them, the thickness direction of the housing 1 is consistent with the thickness direction of the terminal device, both being Figure 7The direction Z in []. Exemplarily, the inner wall surface of the groove 12 may not be parallel to the thickness direction Z of the housing 1. The portion of the flexible circuit board 3 located in the groove 12 may be supported on the inner wall surface of the groove 12, so that the extending direction of the flexible circuit board 3 is not parallel to the thickness direction Z of the housing 1. Among them, in order to enable the bracket 4 to press on the flexible circuit board 3, corresponding inclined surfaces also need to be provided on the bracket 4. However, the direction in which the bracket 4 is installed into the groove 12 is parallel to the thickness direction Z of the housing 1, which will cause a component force to be generated on the inclined flexible circuit board 3 when the flexible circuit board 3 is squeezed by the bracket 4, and this component force will cause the flexible circuit board 3 to be displaced, making it difficult to ensure the assembly consistency of the flexible circuit board 3.

[0089] In Figure 6 In the embodiment shown, at least part of the flexible circuit board 3 located in the groove 12 extends along the thickness direction Z of the housing 1 and abuts against the inner wall of the groove 12 under the pressure of the bracket 4. In one embodiment, part of the inner wall surface of the groove 12 may be parallel to the thickness direction Z of the housing 1. Exemplarily, as described above, the housing 1 may include a retaining wall 14, and the surface of the retaining wall 14 facing the groove 12 side may be used as the inner wall surface of the groove 12, and the surface of the retaining wall 14 facing the groove 12 side may be parallel to the thickness direction Z of the housing 1. Part of the flexible circuit board 3 may bypass the retaining wall 14 along the surface of the retaining wall 14, and the flexible circuit board 3 is as close as possible to the surface of the retaining wall 14 to reduce space occupation while ensuring the stability of the structural form of the flexible circuit board 3. Among them, for the part of the flexible circuit board 3 located in the groove 12, it can be supported and guided by the side surface of the retaining wall 14, so that the part of the flexible circuit board 3 that fits with the retaining wall 14 can extend in a direction parallel to the thickness direction Z of the housing 1. Thus, when the flexible circuit board 3 is squeezed by the bracket 4, the direction of the squeezing force of the bracket 4 on the flexible circuit board 3 can be perpendicular to the surface of the flexible circuit board 3 that is pressed, so as to reliably press the flexible circuit board 3 between the bracket 4 and the retaining wall 14 and ensure the stability of the flexible circuit board 3.

[0090] Figure 8 This is a schematic structural diagram of the bracket 4 provided by the embodiment of the present application from one perspective. As Figure 8 shown, the bracket 4 includes a first flexible rib 41, and Figure 8 shows the first flexible rib 41 on one side of the bracket 4. Figure 8 At least part of the first flexible rib 41 on one side of the bracket 4 shown can be used to abut against the flexible circuit board, and at least part of the first flexible rib 41 can abut against the inner wall of the groove.

[0091] Figure 9 This is a schematic structural diagram of the bracket 4 provided by the embodiment of the present application from another perspective. Figure 9Shows the first flexible rib 41 on the other side of the bracket 4, Figure 9 The first flexible rib 41 on the other side of the shown bracket 4 can abut against the inner wall of the groove.

[0092] As Figure 6 shown, the bracket 4 abuts against the flexible circuit board 3 and the housing 1 through the first flexible rib 41. Among them, the first flexible rib 41 and the bracket 4 can be made of the same flexible material. In one embodiment, the bracket 4 and the first flexible rib 41 can be integrally formed, that is, the first flexible rib 41 can be integrally formed during the manufacturing process of the bracket 4. Among them, the overall width dimension of the bracket 4 including the first flexible rib 41 can be slightly larger than the width dimension of the groove 12. During the installation process of the bracket 4 into the groove 12, the first flexible rib 41 will interfere with the flexible circuit board 3 in the groove 12, and the first flexible rib 41 will elastically deform after being pressed between the bracket 4 and the flexible circuit board 3. The elastic force of its own elastic deformation can ensure the reliability of pressing the flexible circuit board 3, and thus ensure the stability of the installation position of the flexible circuit board 3.

[0093] In one embodiment, as Figure 6 shown, a sealing groove 15 can be provided on the inner wall of the groove 12, and at least part of the first flexible rib 41 is clamped in the sealing groove 15. After the bracket 4 is installed in the groove 12, the first flexible rib 41 can be clamped into the sealing groove 15, and the inner wall of the sealing groove 15 can be located on both sides of the first flexible rib 41 in the thickness direction Z of the bracket 4, so that the inner wall of the sealing groove 15 can be used to limit the first flexible rib 41 in the thickness direction Z of the bracket 4, thereby preventing the bracket 4 from coming out of the groove 12.

[0094] In one embodiment, as Figure 8 shown, along the direction perpendicular to the thickness direction Z of the bracket 4, the first flexible rib 41 is circumferentially arranged around the outer wall of the bracket 4. Among them, the thickness direction Z of the bracket 4, the thickness direction Z of the terminal device, and the thickness direction Z of the housing 1 are all the same, and are all Figure 8 the direction Z in. The first flexible rib 41 is circumferentially arranged around the bracket 4, so that part of the first flexible rib 41 can be pressed against the flexible circuit board 3 in the groove 12 to ensure the reliability of fixing the flexible circuit board 3; at the same time, the part of the first flexible rib 41 that is not pressed against the flexible circuit board 3 can be pressed against the inner wall of the groove 12, so as to ensure the reliability of fixing the bracket 4 in the groove 12.

[0095] In one embodiment, as Figure 8As shown, the bracket 4 further includes a second flexible rib 42. Along the thickness direction Z of the bracket 4, the second flexible rib 42 is spaced apart from the first flexible rib 41, and the second flexible rib 42 extends along the length direction of the bracket 4. In this embodiment, the length direction of the bracket 4 is consistent with the length direction of the terminal device, both being Figure 8 the direction X in Figure 6 As shown, the bracket 4 abuts against the flexible circuit board 3 through the second flexible rib 42. In this embodiment, the first flexible rib 41 and the second flexible rib 42 can press different parts of the flexible circuit board 3 in the thickness direction Z of the bracket 4, so as to effectively ensure that the flexible circuit board 3 is reliably pressed between the bracket 4 and the housing 1, ensuring the stability of the position of the flexible circuit board 3. In one embodiment, the second flexible rib 42 can also be integrally formed with the bracket 4, that is, the second flexible rib 42 can be integrally formed during the forming process of the bracket 4, so as to ensure the reliability of the structure of the bracket 4 and is also convenient for processing and manufacturing.

[0096] In one embodiment, as Figure 8 shown, the bracket 4 may include a body 43, a first support portion 44 and a second support portion 45. The first support portion 44 and the second support portion 45 are both connected to the same surface of the body 43, and there is a spacing for passing the flexible circuit board 3 between the first support portion 44 and the second support portion 45. Among them, the first support portion 44 and the second support portion 45 can increase the overall strength of the bracket 4 and ensure the reliability of the structure. At the same time, a certain distance is maintained between the first support portion 44 and the second support portion 45, so that the flexible circuit board 3 can pass between the first support portion 44 and the second support portion 45 and then be electrically connected to the fingerprint module 21, facilitating the arrangement of the flexible circuit board 3. In addition, after filling the groove 12 with a sealing member such as liquid glue, the sealing member can also be filled between the first support portion 44 and the second support portion 45, and can cover the flexible circuit board 3 located between the first support portion 44 and the second support portion 45 and the flexible circuit board 3 pressed between the bracket 4 and the housing 1, so as to prevent the flexible circuit board 3 from contacting external moisture. At the same time, the cured sealing member can also block the penetration of moisture into the housing 1, avoiding the electronic components of the housing 1 from contacting moisture and malfunctioning.

[0097] As described above, the bracket 4 can be an integrally formed structure, that is, during the processing and manufacturing process of the bracket 4, the corresponding first support portion 44 and the second support portion 45 can be integrally formed, so as to ensure the reliability of the overall structure of the bracket 4 and is also convenient for process manufacturing.

[0098] Among them, the thickness of the body 43 of the bracket 4 is small, so as to reduce the space occupied by the bracket 4 in the thickness direction Z. However, as Figure 8As shown, since there is a certain distance between the first support portion 44 and the second support portion 45, the portion of the main body 43 corresponding to the area between the first support portion 44 and the second support portion 45 is not supported. During the installation of the bracket 4 into the groove 12, due to the interference force between the bracket 4 and the housing 1, the portion of the main body 43 corresponding to the area between the first support portion 44 and the second support portion 45 will be deformed such as tipping over, making it difficult to ensure reliable abutment between the bracket 4 and the housing 1.

[0099] Figure 10 For Figure 8 the sectional view at C-C in the figure, as Figure 10 shown, in this embodiment, a first reinforcing member 47 can be embedded in the main body 43, and the position of the first reinforcing member 47 on the main body 43 can be the portion of the main body 43 corresponding to the area between the first support portion 44 and the second support portion 45. Thus, the first reinforcing member 47 can ensure that the main body 43 has a high structural strength, avoid deformation under force, and further ensure that the bracket 4 and the housing 1 can be installed and fixed, ensuring installation consistency. In one embodiment, the first reinforcing member 47 can be a component with a certain structural strength such as a steel sheet.

[0100] As previously mentioned, the bracket 4 is made of a flexible material, and the reliable installation of the bracket 4 in the groove 12 is ensured by means of interference with the housing 1. However, since the bracket 4 is relatively soft, when the bracket 4 is installed in the groove 12, some parts of the bracket 4 will also be squeezed and elastically deformed. In particular, the parts at both ends of the bracket 4 in the length direction X are more likely to warp, tip over and other deformations, and it cannot ensure the reliable installation of the bracket 4 in the groove 12. For this reason, Figure 11 This is a perspective view after sectioning at A-A in an embodiment provided by the present application in Figure 3 the figure, as Figure 11 shown, in this embodiment, a protruding portion 46 can be provided on the bracket 4, and a limiting groove 16 can be provided on the housing 1, and the protruding portion 46 is snap-fitted into the limiting groove 16. Among them, when the bracket 4 is installed in the groove 12, at least part of the protruding portion 46 can be inserted into the limit, and the side surface of the protruding portion 46 can cooperate with the inner wall of the limiting groove 16, so that the distortion deformation of the protruding portion 46 in all directions can be restricted by the limiting groove 16, and further problems such as warping and tipping over of the bracket 4 can be avoided.

[0101] As described above, since the parts at both ends of the bracket 4 in the length direction X are more likely to warp, tip over and other deformations, for this reason, in this embodiment, as Figure 8 shown, the protruding portion 46 can include a first protrusion 461 and a second protrusion 462. The first protrusion 461 is provided on the first support portion 44, the second protrusion 462 is provided on the second support portion 45, and the first protrusion 461 and the second protrusion 462 are respectively located at both ends of the bracket 4 in the length direction X.Figure 12 A partial schematic view of the housing 1 provided by the embodiment of the present application, as Figure 12 shown. Correspondingly, the limiting groove 16 may include a first groove 161 and a second groove 162. The first protrusion 461 is in limiting cooperation with the first groove 161, and the second protrusion 462 is in limiting cooperation with the second groove 162. When the bracket 4 is installed in the groove 12, the first protrusion 461 can be clamped in the first groove 161, and the second protrusion 462 can be clamped in the second groove 162. Thus, through the cooperation of the first protrusion 461 and the first groove 161, and the cooperation of the second protrusion 462 and the second groove 162, warping, tipping and other deformations of both ends of the bracket 4 in the length direction X can be prevented, and it can be ensured that the bracket 4 is reliably installed in the groove 12.

[0102] In one embodiment, as Figure 8 shown, the first protrusion 461 is arranged at one end of the first support portion 44 away from the main body 43, and the second protrusion 462 is arranged at one end of the second support portion 45 away from the main body 43. Correspondingly, both the first groove 161 and the second groove 162 are arranged at the bottom of the groove 12 in the thickness direction Z of the bracket 4, so that warping, tipping and other deformations will not occur in the bottom area of the bracket 4, and thus the installation position accuracy of the bracket 4 can be effectively ensured.

[0103] The above is only the preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A terminal device, characterized in that, Comprising: A housing; A fingerprint key assembly connected to the housing, the fingerprint key assembly including a fingerprint module; A flexible circuit board connected to the housing, one end of the flexible circuit board being electrically connected to the fingerprint module, and the other end of the flexible circuit board being used for electrical connection to a main board within the housing; A bracket connected to the housing, at least a portion of the flexible circuit board being crimped to the housing by the bracket.

2. The terminal device according to claim 1, wherein A groove is provided on the housing, and the bracket is disposed within the groove; At least a portion of the flexible circuit board is disposed within the groove and is crimped to the inner wall of the groove by the bracket.

3. The terminal device according to claim 2, wherein At least a portion of the flexible circuit board located within the groove extends in the thickness direction of the housing and abuts against the inner wall of the groove by the pressure of the bracket.

4. The terminal device according to claim 2, wherein The bracket includes a first flexible rib, and the bracket abuts against the flexible circuit board and the housing through the first flexible rib.

5. The terminal device according to claim 4, characterized in that In a direction perpendicular to the thickness direction of the bracket, the first flexible rib is disposed around the outer wall of the bracket.

6. The terminal device according to claim 4, characterized in that A sealing groove is provided on the inner wall of the groove, and at least a portion of the first flexible rib is snapped into the sealing groove.

7. The terminal device according to claim 4, wherein The bracket further includes a second flexible rib, along the thickness direction of the bracket, the second flexible rib is spaced from the first flexible rib, and the second flexible rib extends along the length direction of the bracket, and the bracket abuts against the flexible circuit board through the second flexible rib.

8. The terminal device according to any one of claims 1-7, characterized in that, The bracket includes a body, a first support portion and a second support portion, both the first support portion and the second support portion are connected to the same surface of the body, and there is a spacing for passing the flexible circuit board between the first support portion and the second support portion.

9. The terminal device according to claim 8, characterized in that The bracket is integrally formed.

10. The terminal device according to claim 8, wherein A protruding portion is provided on the bracket, and a limiting groove is provided on the housing, and the protruding portion is snapped into the limiting groove.

11. The terminal device according to claim 10, wherein The protruding portion includes a first protrusion and a second protrusion, the first protrusion is provided on the first support portion, the second protrusion is provided on the second support portion, and the first protrusion and the second protrusion are respectively located at both ends in the length direction of the bracket; The limiting groove includes a first groove and a second groove, the first protrusion is in limiting cooperation with the first groove, and the second protrusion is in limiting cooperation with the second groove.

12. The terminal device according to claim 8, wherein A first reinforcing member is embedded in the body.

13. The terminal device according to any one of claims 1-7, 9, 10, 11, and 12, characterized in that, A second reinforcing member is further included, the second reinforcing member is connected to the flexible circuit board, and at least a portion of the flexible circuit board abuts against the housing through the second reinforcing member.

14. The terminal device according to any one of claims 2-7, characterized in that, The housing includes a cavity and a retaining wall, and the cavity and the groove are separated by the retaining wall; At least a portion of the flexible circuit board is disposed within the cavity, at least a portion of the flexible circuit board bypasses the retaining wall and extends into the groove, and at least a portion of the flexible circuit board located within the groove abuts against the retaining wall by the pressure of the bracket.

15. The terminal device according to any one of claims 1-7, 9, 10, 11, and 12, characterized in that, The bracket is made of a flexible material.

16. The terminal device according to any one of claims 2-7, characterized in that, A sealing member is further included, the sealing member is filled in the groove and seals the gap between the bracket and the inner wall of the groove.

17. The terminal device according to claim 16, characterized in that, The thickness of the bracket is less than the depth of the groove.

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