Circuit board and terminal device

Abstract

Embodiments of the present application relate to the technical field of circuit board structures, and provide a circuit board and a terminal device. The circuit board comprises a board body and a pressing assembly; and the board body comprises a first mounting surface, and the first mounting surface is provided with a connection position for connection of a flexible circuit board. The pressing assembly is used for pressing the flexible circuit board to the connection position; and the pressing assembly comprises a pressing member, a first mating member, and a second mating member. The first mating member comprises a first mounting portion, a second mounting portion, and a first connection portion; a mounting gap is formed between the first connection portion and the first mounting surface; and in the thickness direction of the board body, the projection of the first mounting portion and the projection of the second mounting portion both do not overlap with the projection of the first connection portion. The pressing member has a first end and a second end; the first end is inserted into the mounting gap; and the second end is snap-fitted to the second mating member. In the circuit board provided by the embodiments of the present application, the first mating member can save a certain material thickness in the thickness direction of the board body, thereby reducing the overall height of the pressing assembly.

Description

Circuit boards and terminal equipment

[0001] This application claims priority to Chinese patent application No. 202411992380.1, filed with the State Intellectual Property Office of China on December 30, 2024, entitled "Circuit Board and Terminal Equipment", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of circuit board technology, and in particular to a circuit board and terminal device. Background Technology

[0003] Circuit boards are used to carry electronic components. For example, circuit boards in mobile phones, tablets, and computers typically include a main circuit board and a sub-circuit board. The main circuit board and the sub-circuit board are electrically connected through an FPC (Flexible Printed Circuit Board). Therefore, both the main circuit board and the sub-circuit board are provided with connection points for connecting to the FPC. These connection points are board-to-board (BTB) connectors.

[0004] Meanwhile, in order to improve the connection stability between the FPC and the connection point on the circuit board, a corresponding snap-fit ​​structure is usually added to squeeze and fix the FPC and the connection point.

[0005] Typically, this type of snap-fit ​​structure includes a snap-fit ​​base mounted on the main circuit board and a BTB pressing bracket for pressing the FPC to the connection position. However, in some foldable screen terminal devices, the overall height space is limited, making it difficult to meet the snap-fit ​​dimensions of the BTB pressing bracket in the thickness direction. Summary of the Invention

[0006] This application provides a circuit board and a terminal device that can improve the technical problem of large dimensions of the circuit board in the thickness direction.

[0007] To achieve the above objectives, the embodiments of this application adopt the following technical solutions:

[0008] In a first aspect, this application provides a circuit board, including a board body and a lamination assembly;

[0009] The board body includes a first mounting surface, which has connection positions for connecting flexible circuit boards.

[0010] The board body is used to support electronic components. The first mounting surface is the end face of the board body. Of course, the board body may also have a second mounting surface. The first mounting surface and the second mounting surface are arranged back to back. The first mounting surface is the end face mainly used for mounting electronic components. For example, the connection position to the flexible circuit board is set on the first mounting surface. The second mounting surface may not be used for mounting electronic components. In actual use, the second mounting surface of the board body can directly contact the shell of the terminal device. At this time, the board body has only one end face for mounting electronic components.

[0011] The pressing assembly is used to press a flexible circuit board to a connection position. The pressing assembly includes a pressing member, a first mating member and a second mating member disposed on a first mounting surface. The first mating member includes a first mounting portion and a second mounting portion connected to the first mounting surface, and a first connecting portion connected to the first mounting portion and the second mounting portion. The first connecting portion forms a mounting gap with the first mounting surface. In the thickness direction of the board body, the projections of the first mounting portion and the second mounting portion do not coincide with the projection of the first connecting portion. The pressing member has a first end and a second end disposed opposite to the first end. The first end is inserted into the mounting gap, and the second end is snapped into the second mating member.

[0012] The first and second mating parts can be fixed to the first mounting surface by welding, forming two connection points for the pressing component. Specifically, the first end of the pressing component is located at the mounting gap via an insert connection, and the first and second mounting portions are used to prevent the first end of the pressing component from coming out of the mounting gap. The second end of the pressing component is connected to the second mating part via a snap-fit ​​connection. Furthermore, since the projections of the first and second mounting portions do not coincide with the projection of the first connecting portion in the thickness direction of the plate body, the first mating part can save a certain amount of material thickness in the thickness direction of the plate body, thereby reducing the overall height of the pressing assembly.

[0013] The technical solutions described in this application have at least the following technical effects or advantages:

[0014] The circuit board provided in this application embodiment has a first end of the pressing member of the pressing assembly inserted into a first mating member, and a second end of the pressing member snapped into a second mating member. Meanwhile, since the projections of the first mounting portion and the second mounting portion do not coincide with the projection of the first connecting portion in the thickness direction of the board body, the first mating member can save a certain amount of material thickness in the thickness direction of the board body, thereby reducing the overall height of the pressing assembly.

[0015] In some embodiments, the first mounting portion has a first sidewall, the second mounting portion has a second sidewall opposite to the first sidewall, one end of the first connecting portion is connected to the first sidewall, and the other end of the first connecting portion is connected to the second sidewall.

[0016] Understandably, the first sidewall is a facade structure that is perpendicular or nearly perpendicular to the first mounting surface, and the second sidewall is a facade structure that is also perpendicular or nearly perpendicular to the first mounting surface. That is, both the first and second sidewalls are facade structures extending along the thickness direction of the main body. Therefore, according to actual installation requirements, by adjusting the corresponding ends of the first connecting portion on the corresponding sidewalls in the thickness direction of the main body, the height distance from the first connecting portion to the first mounting surface can be further compressed. Consequently, to the greatest extent possible, the first mating component can save the thickness of one first mounting portion or one second mounting portion in the thickness direction of the main body, minimizing the overall height of the pressing assembly. Simultaneously, since the ends of the first connecting portion are connected to the sidewalls of the mounting portions, the thickness of the two mounting portions themselves has little impact on the thickness of the first mating component. Furthermore, the thicknesses of the two mounting portions can be adjusted according to actual usage requirements. That is, in some embodiments, the thickness of the first mounting portion can be different from the thickness of the second mounting portion, and their thicknesses can also be the same.

[0017] In some embodiments, one end of the first connecting portion is connected to the first sidewall and abuts against the first mounting surface; and / or,

[0018] The other end of the first connecting part is connected to the second side wall and abuts against the first mounting surface.

[0019] Understandably, since one end of the first connecting part is still abutting against the first mounting surface after connecting to the first side wall, it can be considered that the height measurement of the current end of the first connecting part can be taken as the starting point of the first mounting surface. Similarly, since the other end of the first connecting part is still abutting against the first mounting surface after connecting to the second side wall, it can also be considered that the height measurement of the current end of the first connecting part can be taken as the starting point of the first mounting surface.

[0020] Optionally, in some embodiments, one end of the first connecting portion is connected to the first sidewall and abuts against the first mounting surface, and the other end of the first connecting portion is connected to the second sidewall and abuts against the first mounting surface, thereby maximizing the compression of the overall height of the first mating member.

[0021] In some embodiments, the pressing member includes a pressing body, an insertion portion disposed at one end of the pressing body, and a snap-fit ​​portion disposed at the other end of the pressing body, the insertion portion being formed at the first end and the snap-fit ​​portion being formed at the second end.

[0022] Understandably, the pressing body is the main part of the pressing component, and the insertion part and snap-fit ​​part are the connection structures formed on the pressing body. The pressing body should have a certain deformation capacity and meet the pressing function of the flexible circuit board and the connection position; therefore, the pressing body has a flattened structure.

[0023] In some embodiments, the plug portion includes a plug arm bent and formed on the pressing body, the plug arm being inserted into the mounting gap.

[0024] Understandably, there is a height difference between the plane where the plug arm is located and the plane where the pressing body is located, so that the pressing body can bend to a greater extent when the plug arm is inserted into the installation gap.

[0025] In some embodiments, the insertion portion further includes an abutment arm formed on the pressing body, the abutment arm abutting against the first connection portion.

[0026] Understandably, the abutting arm is used to abut against the first connecting portion when the plugging arm is inserted into the installation gap, so as to provide connection stability between the first end of the press-fit member and the first mating member when they are inserted into each other.

[0027] In some embodiments, the snap-fit ​​portion includes a snap-fit ​​arm bent and formed on the pressing body, and the second mating member is provided with a snap-fit ​​structure that snaps into connection with the snap-fit ​​arm.

[0028] Understandably, the snap-fit ​​arm and the snap-fit ​​structure form a snap-fit ​​connection to satisfy the requirement that the second end of the press-fit component and the second mating component can be detachably connected.

[0029] In some embodiments, the pressing body is provided with a force-bearing portion, which is used to achieve bending deformation of the pressing body so that the insertion portion disengages from the installation gap.

[0030] Understandably, the force-applying part is used for the operator's hands to apply force to assist the bending deformation of the pressing body. The distance between the first end and the second end of the pressing body is shortened. Since the second end is interlocked with the second mating part, the second end is relatively difficult to detach from the second mating part. On the other hand, the first end is interlocked with the first mating part, and the first end is relatively easy to separate from the first mating part. Finally, by unlocking the second end of the pressing part from the second mating part, the pressing part can be removed.

[0031] In some embodiments, the second mating member includes a third mounting portion and a second connecting portion, the third mounting portion having a third sidewall, and one end of the second connecting portion being connected to the third sidewall and abutting against the first mounting surface.

[0032] Understandably, the third sidewall is a facade structure that is perpendicular or nearly perpendicular to the first mounting surface, meaning it extends along the thickness direction of the main body of the plate. Similarly, when one end of the second connecting part is connected to the third sidewall and abuts against the first mounting surface, it can be assumed that the starting point for measuring the height of the current end of the second connecting part can be the first mounting surface, thereby maximizing the compression of the overall height of the second mating part. Furthermore, the thickness setting of the third mounting part does not interfere with the thickness setting of the second connecting part.

[0033] In some embodiments, the snap-fit ​​structure is a snap-fit ​​hole formed on the second connecting portion.

[0034] Understandably, the snap-fit ​​arm is inserted into the snap-fit ​​hole to achieve a snap-fit ​​connection between the second end of the press-fit component and the second connecting part.

[0035] In some embodiments, the third mounting portion is provided with retaining edges for limiting the opposite sides of the locking arm.

[0036] Understandably, the two flanges can limit the pressing body in its width direction to improve the connection stability of the pressing part at the second mating part.

[0037] In some embodiments, the snap-fit ​​structure is a snap-fit ​​protrusion formed on the second connecting portion.

[0038] Understandably, the snap-fit ​​arm snaps onto the snap-fit ​​protrusion to achieve a snap-fit ​​connection between the second end of the press-fit component and the second connecting part.

[0039] In some embodiments, the snap-fit ​​arm is provided with first protruding ribs for abutting against opposite sides of the second connecting portion.

[0040] Understandably, the two first ribs can limit the pressing body in its width direction to improve the connection stability of the pressing part at the second mating part.

[0041] In some embodiments, the second mating member includes a third mounting portion, a second connecting portion, and a third connecting portion. The third mounting portion has a third sidewall and a fourth sidewall disposed opposite to the third sidewall. One end of the second connecting portion is connected to the third sidewall and abuts against the first mounting surface, and one end of the third connecting portion is connected to the fourth sidewall and abuts against the first mounting surface.

[0042] Understandably, the third sidewall is a facade structure that is perpendicular or nearly perpendicular to the first mounting surface, meaning the third sidewall is a facade structure extending along the thickness direction of the main body of the plate. Similarly, the fourth sidewall is a facade structure that is perpendicular or nearly perpendicular to the first mounting surface, meaning the fourth sidewall is a facade structure extending along the thickness direction of the main body of the plate. Likewise, when one end of the second connecting part is connected to the third sidewall and abuts against the first mounting surface, and when one end of the third connecting part is connected to the fourth sidewall and abuts against the first mounting surface, it can be considered that the starting point for measuring the height of the current end of the second connecting part can be the first mounting surface, thereby maximizing the compression of the overall height of the second mating component. Simultaneously, the thickness setting of the third mounting part does not interfere with the thickness setting of the second connecting part. Likewise, the starting point for measuring the height of the current end of the third connecting part can be the first mounting surface, thereby maximizing the compression of the overall height of the second mating component. Simultaneously, the thickness setting of the third mounting part does not interfere with the thickness setting of the third connecting part.

[0043] In some embodiments, the second connecting portion is curled toward the third connecting portion to form a first curved portion, and the third connecting portion is curled away from the second connecting portion to form a second curved portion. The first curved portion and the second curved portion are spaced apart to form a snap-fit ​​structure.

[0044] Understandably, the first bend is formed by curling the end of the second connecting portion away from the third mounting portion, and similarly, the second bend is formed by curling the end of the second connecting portion away from the third mounting portion. Furthermore, the two bends are spaced apart to form a groove-like structure for snap-fit ​​connection of the snap-fit ​​portion of the press-fit component.

[0045] In some embodiments, the pressing body is provided with two second protrusions, each second protrusion located on opposite sides of the snap-fit ​​arm, and the second protrusions are used to abut against opposite sides of the second connecting portion.

[0046] Understandably, the two second ribs can limit the pressing body in its width direction to improve the connection stability of the pressing part at the second mating part.

[0047] In some embodiments, the snap-fit ​​arm includes a first snap-fit ​​segment connected to the pressing body, a second snap-fit ​​segment snapped to the snap-fit ​​structure, and an intermediate segment connected to the first snap-fit ​​segment and the second snap-fit ​​segment. There is a height difference between the setting positions of the first snap-fit ​​segment and the second snap-fit ​​segment, and the plane of the intermediate segment is set at an acute angle to the plane of the second snap-fit ​​segment.

[0048] Understandably, the first snap-fit ​​section is the part connecting the snap-fit ​​arm to the pressing body, and the second snap-fit ​​section is the part connecting the snap-fit ​​arm to the snap-fit ​​structure. Furthermore, the middle section connects the two snap-fit ​​sections, and when the second snap-fit ​​section is snapped into the snap-fit ​​structure, the inclined middle section assists in the second snap-fit ​​section engaging with the snap-fit ​​structure, and also makes it easier for the second snap-fit ​​section to detach from the snap-fit ​​structure.

[0049] Secondly, this application also provides a terminal device, including the aforementioned circuit board.

[0050] Terminal devices can include mobile phones, tablets, laptops, handheld calculators, wearable electronic devices, smartwatches, etc.

[0051] The technical solutions described in this application have at least the following technical effects or advantages:

[0052] The terminal device provided in this application embodiment, based on the above-mentioned circuit board, has a more reasonable layout of electronic components, higher space utilization of the circuit board, and a thinner thickness. Attached Figure Description

[0053] Figure 1 is a schematic diagram of the structure of the terminal device provided in an embodiment of this application;

[0054] Figure 2 is an exploded view of the terminal device provided in an embodiment of this application;

[0055] Figure 3 is a schematic diagram of the circuit board provided in Embodiment 1 of this application;

[0056] Figure 4 is an exploded view of the circuit board provided in Embodiment 1 of this application;

[0057] Figure 5 is a schematic diagram of the pressing component of the circuit board pressing assembly provided in Embodiment 2 of this application;

[0058] Figure 6 is a schematic diagram of the pressing component of the circuit board pressing assembly provided in Embodiment 2 of this application;

[0059] Figure 7 is an exploded view of the circuit board provided in Embodiment 3 of this application;

[0060] Figure 8 is an exploded view of the circuit board provided in Embodiment 4 of this application;

[0061] Figure 9 is an exploded view of the circuit board provided in Embodiment 5 of this application.

[0062] In the figures, the following labels are used: 1000, terminal device; 200, outer casing; 201, middle frame; 202, back cover; 203, opening; 204, stepped structure; 300, display screen; 400, battery; 500, camera module; 501, front camera; 502, rear camera; 100, circuit board; 10, main body of the board; 10a, first mounting surface; 10b, second mounting surface; 20, pressing assembly; 21, pressing component; 21a, first end; 20b, second end; 211, pressing body; 212. 2121, Insertion part; 213, Abutment arm; 214, Snap-fit ​​part; 215, First protruding rib; 216, Force-attaching part; 2131, First snap-fit ​​section; 2132, Second snap-fit ​​section; 2133, Intermediate section; 22, First mating part; 221, First mounting part; 221a, First side wall; 222, Second mounting part; 222a, Second side wall; 223, First connecting part; 223a, Mounting gap; 23, Second mating part; 231, Third mounting part; 231a, Third side wall; 231b, Fourth side wall; 2311, Edge retainer; 232, Second connecting part; 23a, Snap-fit ​​structure; 233, Third connecting part; 232a, First bending part; 232b, Second bending part. Detailed Implementation

[0063] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0064] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application. The terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0065] In the description of this application, it should be understood that the terms "length", "width", "thickness", "top", "bottom", "inner", "outer", "upper", "lower", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0066] The terms "first," "second," "third," "fourth," "fifth," and "sixth," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. For example, "first deformation space" and "second deformation space" are merely used to distinguish different deformation spaces and do not limit their order. A first deformation space can also be named a second deformation space, and a second deformation space can also be named a first deformation space, without departing from the scope of the various described embodiments. Furthermore, the terms "first," "second," etc., do not imply that the indicated features must be different.

[0067] In this application, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0068] In this application, "and / or" is merely a way of describing the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0069] It should be noted that in this application, the words "in some embodiments," "exemplarily," and "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "in some embodiments," "exemplarily," or "for example" should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the words "in some embodiments," "exemplarily," and "for example" is intended to present the relevant concepts in a specific manner.

[0070] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments.

[0071] Circuit boards are used to carry electronic components. For example, circuit boards in mobile phones, tablets, and computers typically include a main circuit board and a sub-circuit board. The main circuit board and the sub-circuit board are electrically connected through an FPC. Therefore, both the main circuit board and the sub-circuit board are provided with connection points for connecting to the FPC. These connection points are Board to Board (BTB) connectors.

[0072] Meanwhile, in order to improve the connection stability between the FPC and the connection point on the circuit board, a corresponding snap-fit ​​structure is usually added to squeeze and fix the FPC and the connection point.

[0073] The snap-fit ​​structure includes a snap-fit ​​base mounted on the main circuit board and a BTB pressing bracket for pressing the FPC to the connection position. However, during installation, the snap-fit ​​base needs to be positioned on the same side of the main circuit board where the electronic components are located. Therefore, the snap-fit ​​base occupies a portion of the installation space on the circuit board, thus affecting the utilization rate of the installation space on the main circuit board.

[0074] In view of this, this application provides a circuit board in which a snap-fit ​​component for a pressing assembly is provided on a second mounting surface of the board body. Compared to the first mounting surface, the second mounting surface is typically not used for mounting electronic components. Therefore, placing the snap-fit ​​component on the second mounting surface does not occupy the mounting space for electronic components. Simultaneously, the snap-fit ​​component bends and extends from the edge of the board body to the first mounting surface to achieve engagement with the pressing assembly. In this way, the snap-fit ​​component of the pressing assembly achieves engagement with the pressing assembly without occupying the mounting space of the board body, effectively increasing the space utilization rate of the board body, and allowing for a more rational arrangement of electronic components on the first mounting surface.

[0075] The circuit board involved in this application embodiment can be applied to the terminal device 1000, which may include handheld devices, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to a wireless modem. It may also include cellular phones, smartphones, personal digital assistant (PDA) computers, tablet computers, laptop computers, machine-type communication (MTC) terminals, point-of-sale (POS) terminals, in-vehicle computers, and other terminal devices 1000 with imaging capabilities. Furthermore, the terminal device may also be a foldable device, such as a foldable mobile phone, a foldable tablet computer, or a foldable computer.

[0076] This application does not impose any special restrictions on the specific form of the terminal device 1000 described above. For ease of explanation and understanding, the following description uses a mobile phone as an example of the terminal device 1000.

[0077] Please refer to Figures 1 and 2. Figure 1 is a structural schematic diagram of a terminal device provided in an embodiment of this application, and Figure 2 is an exploded structural schematic diagram of a terminal device provided in an embodiment of this application. As shown in Figures 1 and 2, the terminal device 1000 provided in this embodiment may include a housing 200, a display screen 300, a circuit board 100, and a battery 400.

[0078] The housing 200 provides a structural frame for the terminal device. Specifically, the housing 200 includes a mid-frame 201 and a rear cover 202. The mid-frame 201, circuit board 100, and battery 400 are disposed between the display screen 300 and the rear cover 202. The circuit board 100 and battery 400 can be disposed on the mid-frame 201; for example, the circuit board 100 and battery 400 can be disposed on the side of the mid-frame 201 facing the rear cover 202, or the circuit board 100 and battery 400 can be disposed on the side of the mid-frame 201 facing the display screen 300.

[0079] It is understood that the casing 200 of the terminal device provided in this application includes, but is not limited to, the structure described above. For example, in some other embodiments, the casing 200 may be a one-piece or separate casing 200 made of metal or plastic. In the embodiments of this application, the casing 200 is specifically described using the structure composed of a middle frame 201 and a back cover 202 as an example.

[0080] The battery 400 can be electrically connected to the circuit board 100 to power the processor, internal memory, external memory, display screen 300, camera module 500, and communication module.

[0081] The display screen 300 can be an organic light-emitting diode (OLED) display screen 300 or a liquid crystal display (LCD) display screen 300.

[0082] The back cover 202 can be a metal back cover 202, a glass back cover 202, a plastic back cover 202, or a ceramic back cover 202. In this embodiment of the application, the material of the back cover 202 is not limited.

[0083] The middle frame 201 may include a middle plate and a frame. The frame surrounds the outer perimeter of the middle plate. Generally, the frame may include a top frame, a bottom frame, a left frame, and a right frame, which together form a square ring structure. The middle plate may be made of aluminum, aluminum alloy, or magnesium alloy. The frame may be made of metal or ceramic. The metal middle plate and the frame may be joined by snap-fit, welded, glued, or integrally formed, or the metal middle plate and the frame may be fixedly connected by injection molding.

[0084] It should be noted that in some other embodiments, the terminal device 1000 may include, but is not limited to, the structure shown in Figures 1 and 2. The back cover 202 may be connected to the frame to form an integrally molded housing. For example, the terminal device may include: a display screen 300, a metal middle plate, and a housing 200, wherein the housing 200 may be integrally molded with the frame and the back cover 202. In this way, the circuit board 100 and the battery 400 are located in the space enclosed by the metal middle plate and the housing 200.

[0085] In this embodiment of the application, in order to realize the shooting function, the terminal device further includes: at least one camera module 500 and a flash (not shown in the figure). The camera module 500 can be a front camera 501, a rear camera 502, etc. The number of front cameras 501 and rear cameras 502 can be one or more. For example, as shown in FIG2, in the terminal device provided in this application, the camera module 500 includes a front camera 501 and a rear camera 502.

[0086] The rear cover 202 has openings for mounting a portion of the flash and rear camera 502. The front camera 501 can be positioned on the side of the middle plate facing the display screen 300. In this embodiment, the positions of the front camera 501 and rear camera 502 are not limited to those described above. In some embodiments, the total number of front cameras 501 and rear cameras 502 in the terminal device can be one or N, where N is a positive integer greater than 1.

[0087] It is understood that the structures illustrated in the embodiments of this application do not constitute a specific limitation on the terminal device. In other embodiments of this application, the terminal device may include more or fewer components than illustrated, or combine some components, or split some components, or have different component arrangements. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

[0088] The camera module 500 may include a lens, filter, bracket, photosensitive element, flexible board and connector, etc.

[0089] It should be noted that the camera module 500 can be a camera module 500 with a fixed focal length or a camera module 500 with a variable focal length. When the camera module 500 is a camera module 500 with a variable focal length, the camera module 500 may also include a focusing module (not shown in the figure), such as a focusing motor, which may be mounted on the bracket of the camera module 500.

[0090] In the embodiments of this application, the filter can be set according to functional requirements. For example, the filter can be an infrared cut-off filter (IRCF). The infrared cut-off filter can filter out infrared light and prevent infrared light from entering the lens and affecting the imaging.

[0091] The photosensitive element can be a charge-coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS) phototransistor. Connectors are used to electrically connect the flexible board to the image signal processing (ISP) unit on the circuit board 100, and the image signal processing (ISP) unit is electrically connected to the digital signal processing (DSP) unit. The image signal processing (ISP) unit and the digital signal processing (DSP) unit can be separately mounted on the circuit board 100, or they can be integrated together on the circuit board 100.

[0092] When taking a picture, the shutter is opened, and light passes through the lens and through the filter to the photosensitive element. The light signal is converted into an electrical signal. The photosensitive element transmits the electrical signal to the image processing unit (ISP) through the flexible board and connector for processing. The image processing unit (ISP) converts the electrical signal into a digital image signal. The image processing unit (ISP) outputs the digital image signal to the digital processing unit (DSP) for further processing. The digital processing unit (DSP) converts the digital signal into image signals in standard RGB, YUV, and other formats.

[0093] Please refer to Figures 3 and 4. In the first aspect, this application provides a circuit board 100, including a board body 10 and a pressing assembly 20.

[0094] The board body 10 includes a first mounting surface 10a, which is provided with a connection position for connecting the flexible circuit board 100.

[0095] The board body 10 is used to support electronic components. The first mounting surface 10a is the end face of the board body 10. Of course, the board body 10 may also have a second mounting surface 10b. The first mounting surface 10a and the second mounting surface 10b are arranged back to back. The first mounting surface 10a is the end face mainly used for mounting electronic components. For example, the connection position connected to the flexible circuit board 100 is set on the first mounting surface 10a. The second mounting surface 10b may not be used for mounting electronic components. In actual use, the second mounting surface 10b of the board body 10 can directly contact the outer shell of the terminal device. At this time, the board body 10 has only one end face for mounting electronic components.

[0096] The pressing assembly 20 is used to press the flexible circuit board 100 to the connection position. The pressing assembly 20 includes a pressing member 21, a first mating member 22 and a second mating member 23 disposed on the first mounting surface 10a. The first mating member 22 includes a first mounting portion 221 and a second mounting portion 222 connected to the first mounting surface 10a, and a first connecting portion 223 connected to the first mounting portion 221 and the second mounting portion 222. The first connecting portion 223 forms a mounting gap 223a with the first mounting surface 10a. In the thickness direction of the board body 10, the projections of the first mounting portion 221 and the second mounting portion 222 do not coincide with the projection of the first connecting portion 223. The pressing member 21 has a first end 21a and a second end 21b disposed opposite to the first end 21a. The first end 21a is inserted into the mounting gap 223a, and the second end 21b is snapped into the second mating member 23.

[0097] The first mating part 22 and the second mating part 23 can be fixed to the first mounting surface 10a by welding, forming two connection points for the pressing part 21. Specifically, the first end 21a of the pressing part 21 is provided at the mounting gap by plugging in, and the first mounting part 221 and the second mounting part 222 are used to prevent the first end 21a of the pressing part 21 from coming out of the mounting gap, and the second end 21b of the pressing part 21 is connected to the second mating part 23 by snap-fitting. At the same time, since the projections of the first mounting part 221 and the second mounting part 222 do not coincide with the projection of the first connecting part 223 in the thickness direction of the plate body 10, the first mating part 22 can save a certain amount of material thickness in the thickness direction of the plate body 10, thereby reducing the overall height of the pressing assembly 20.

[0098] The circuit board 100 provided in this application embodiment has the first end 21a of the pressing member 21 of the pressing assembly 20 inserted into the first mating member 22, and the second end 21b of the pressing member 21 snapped into the second mating member 23. At the same time, since the projection of the first mounting part 221 and the projection of the second mounting part 222 do not coincide with the projection of the first connecting part 223 in the thickness direction of the board body 10, the first mating member 22 can save a certain amount of material thickness in the thickness direction of the board body 10, thereby reducing the overall height of the pressing assembly 20.

[0099] Please refer to Figure 4. In some embodiments, the first mounting portion 221 has a first sidewall 221a, the second mounting portion 222 has a second sidewall 221b opposite to the first sidewall 221a, one end of the first connecting portion 223 is connected to the first sidewall 221a, and the other end of the first connecting portion 223 is connected to the second sidewall 221b.

[0100] Understandably, the first sidewall 221a is a facade structure that is perpendicular or approximately perpendicular to the first mounting part 221 and the first mounting surface 10a, and the second sidewall 221b is a facade structure that is also perpendicular or approximately perpendicular to the first mounting surface 10a for the second mounting part 222. That is, both the first sidewall 221a and the second sidewall 221b are facade structures that extend along the thickness direction of the main body 10. Therefore, according to the actual installation requirements, the opposite ends of the first connecting part 223 are adjusted on the corresponding sidewalls in the thickness direction of the main body 10. Then, the height distance from the first connecting part 223 to the first mounting surface 10a can be further compressed. Thus, to the greatest extent, the thickness of one first mounting part 221 or one second mounting part 222 can be saved in the thickness direction of the main body 10, thereby minimizing the overall height of the pressing assembly 20. Meanwhile, since the end of the first connecting part 223 is connected to the side wall of the mounting part, the thickness of the two mounting parts themselves has little impact on the thickness of the first mating part 22. In fact, the thickness of the two mounting parts can be adjusted according to actual usage requirements. That is, in some embodiments, the thickness of the first mounting part 221 may be different from the thickness of the second mounting part 222, and the thickness of the two may also be the same.

[0101] Please refer to Figure 4. In some embodiments, one end of the first connecting portion 223 is connected to the first sidewall 221a and abuts against the first mounting surface 10a; and / or,

[0102] The other end of the first connecting part 223 is connected to the second side wall 221b and abuts against the first mounting surface 10a.

[0103] Understandably, since one end of the first connecting portion 223 is still abutting against the first mounting surface 10a after connecting to the first side wall 221a, it can be considered that the height measurement of the current end of the first connecting portion 223 can be taken as the starting point of the first mounting surface 10a. Similarly, since the other end of the first connecting portion 223 is still abutting against the first mounting surface 10a after connecting to the second side wall 221b, it can also be considered that the height measurement of the current end of the first connecting portion 223 can be taken as the starting point of the first mounting surface 10a.

[0104] Optionally, in some embodiments, one end of the first connecting portion 223 is connected to the first sidewall 221a and abuts against the first mounting surface 10a, and the other end of the first connecting portion 223 is connected to the second sidewall 221b and abuts against the first mounting surface 10a, thereby maximizing the compression of the overall height of the first mating member 22.

[0105] Please refer to Figures 3 and 4. In some embodiments, the pressing member 21 includes a pressing body 211, an insertion portion 212 disposed at one end of the pressing body 211, and a snap-fit ​​portion 213 disposed at the other end of the pressing body 211. The insertion portion 212 is formed at the first end 21a, and the snap-fit ​​portion 213 is formed at the second end 21b.

[0106] Understandably, the pressing body 211 is the main part of the pressing component 21, and the insertion part 212 and the snap-fit ​​part 213 are respectively the connection structures formed on the pressing body 211. The pressing body 211 should have a certain deformation capability and meet the pressing function of the flexible circuit board 100 and the connection position. Therefore, the pressing body 211 has a flat structure.

[0107] Please refer to Figures 3 and 4. In some embodiments, the plug portion 212 includes a plug arm bent and formed on the pressing body 211, the plug arm being inserted into the mounting gap 223a.

[0108] Understandably, there is a height difference between the plane where the plug arm is located and the plane where the pressing body 211 is located, so as to allow the pressing body 211 to have a large bending range when the plug arm is inserted into the installation gap 223a.

[0109] Please refer to Figures 3 and 4. In some embodiments, the insertion portion 212 further includes an abutment arm formed on the pressing body 211, which abuts against the first connection portion 223.

[0110] Understandably, the abutting arm is used to abut against the first connecting portion 223 when the plugging arm is inserted into the mounting gap 223a, so as to provide connection stability between the first end 21a of the pressing member 21 and the first mating member 22 when they are inserted into each other.

[0111] Please refer to Figures 3 and 4. In some embodiments, the snap-fit ​​portion 213 includes a snap-fit ​​arm bent and formed on the pressing body 211, and the second mating member 23 is provided with a snap-fit ​​structure 23a that snaps into and connects with the snap-fit ​​arm.

[0112] Understandably, the snap-fit ​​arm and the snap-fit ​​structure 23a form a snap-fit ​​connection to satisfy the requirement that the second end 21b of the pressing member 21 and the second mating member 23 can be detachably connected.

[0113] Please refer to Figure 5. In some embodiments, the pressing body 211 is provided with a force-bearing part 216. The force-bearing part 216 is used to realize the bending deformation of the pressing body 211 so that the insertion part 212 is disengaged from the installation gap 223a.

[0114] Understandably, the force-applying part 216 is used for the operator's hand to apply force to assist the bending deformation of the pressing body 211 under force. The distance between the first end 21a and the second end 21b of the pressing body 211 is shortened. Since the second end 21b is interlocked with the second mating part 23, the second end 21b is relatively difficult to detach from the second mating part 23. On the other hand, the first end 21a is interlocked with the first mating part 22, and the first end 21a is relatively easy to separate from the first mating part 22. Finally, by unlocking the second end 21b of the pressing part 21 and the second mating part 23, the pressing part 21 can be removed.

[0115] Please refer to Figures 7 and 8. In some embodiments, the second mating member 23 includes a third mounting portion 231 and a second connecting portion 232. The third mounting portion 231 has a third sidewall 231a, and one end of the second connecting portion 232 is connected to the third sidewall 231a and abuts against the first mounting surface 10a.

[0116] Understandably, the third sidewall 231a is a facade structure that is perpendicular or approximately perpendicular to the first mounting surface 10a, i.e., the third sidewall 231a is a facade structure that extends along the thickness direction of the main body 10. Similarly, when one end of the second connecting part 232 is connected to the third sidewall 231a and abuts against the first mounting surface 10a, it can be assumed that the starting point for measuring the height of the current end of the second connecting part 232 can be the first mounting surface 10a, thereby maximizing the compression of the overall height of the second mating part 23. At the same time, the thickness setting of the third mounting part 231 does not affect the thickness setting of the second connecting part 232.

[0117] Please refer to Figure 9. In some embodiments, the snap-fit ​​structure 23a is a snap-fit ​​hole formed on the second connecting portion 232.

[0118] Understandably, the snap-fit ​​arm is inserted into the snap-fit ​​hole to achieve a snap-fit ​​connection between the second end 21b of the pressing member 21 and the second connecting part 232.

[0119] Please refer to Figure 9. In some embodiments, the third mounting part 231 is provided with a retaining edge 2311 for limiting the opposite sides of the locking arm.

[0120] Understandably, the two flanges 2311 can limit the pressing body 211 in its width direction to improve the connection stability of the pressing part 21 at the second mating part 23.

[0121] Please refer to Figures 7 and 8. In some embodiments, the snap-fit ​​structure 23a is a snap-fit ​​protrusion formed on the second connecting portion 232.

[0122] Understandably, the snap-fit ​​arm snaps onto the snap-fit ​​protrusion to achieve a snap-fit ​​connection between the second end 21b of the pressing member 21 and the second connecting part 232.

[0123] Please refer to Figure 8. In some embodiments, the snap-fit ​​arm is provided with first protruding ribs 214 on opposite sides for abutting against the second connecting portion 232.

[0124] Understandably, the two first ribs 214 can limit the pressing body 211 in its width direction to improve the connection stability of the pressing part 21 at the second mating part 23.

[0125] Please refer to Figure 4. In some embodiments, the second mating member 23 includes a third mounting portion 231, a second connecting portion 232, and a third connecting portion 233. The third mounting portion 231 has a third sidewall 231a and a fourth sidewall 231b disposed opposite to the third sidewall 231a. One end of the second connecting portion 232 is connected to the third sidewall 231a and abuts against the first mounting surface 10a. One end of the third connecting portion 233 is connected to the fourth sidewall 231b and abuts against the first mounting surface 10a.

[0126] Understandably, the third sidewall 231a is a facade structure that is perpendicular or approximately perpendicular to the first mounting surface 10a, meaning that the third sidewall 231a is a facade structure that extends along the thickness direction of the main body 10. Similarly, the fourth sidewall 231b is a facade structure that is perpendicular or approximately perpendicular to the first mounting surface 10a, meaning that the fourth sidewall 231b is a facade structure that extends along the thickness direction of the main body 10. Likewise, when one end of the second connecting portion 232 is connected to the third sidewall 231a and abuts against the first mounting surface 10a, and one end of the third connecting portion 233 is connected to the fourth sidewall 231b and abuts against the first mounting surface 10a, it can be assumed that the starting point for measuring the height of the current end of the second connecting portion 232 can be the first mounting surface 10a, thereby maximally compressing the overall height of the second mating member 23. At the same time, the thickness setting of the third mounting portion 231 does not affect the thickness setting of the second connecting portion 232. Similarly, the starting point for measuring the height of the current end of the third connecting part 233 can be the first mounting surface 10a, thereby maximizing the compression of the overall height of the second mating part 23. At the same time, the thickness setting of the third mounting part 231 does not affect the thickness setting of the third connecting part 233.

[0127] Please refer to Figure 4. In some embodiments, the second connecting portion 232 is curled toward the third connecting portion 233 to form a first curved portion 232a, and the third connecting portion 233 is curled away from the second connecting portion 232 to form a second curved portion 232b. The first curved portion 232a and the second curved portion 232b are spaced apart to form a snap-fit ​​structure 23a.

[0128] Understandably, the first curved portion 232a is formed by curling the end of the second connecting portion 232 away from the third mounting portion 231, and similarly, the second curved portion 232b is formed by curling the end of the second connecting portion 232 away from the third mounting portion 231. Furthermore, the two curved portions are spaced apart to form a groove-like structure for snap-fit ​​connection of the snap-fit ​​portion 213 of the press-fit member 21.

[0129] Please refer to Figures 5 and 6. In some embodiments, the pressing body 211 is provided with two second protrusions 215, each second protrusion 215 is located on opposite sides of the snap-fit ​​arm, and the second protrusions 215 are used to abut against opposite sides of the second connecting part 232.

[0130] Understandably, the two second ribs 215 can limit the pressing body 211 in its width direction to improve the connection stability of the pressing part 21 at the second mating part 23.

[0131] Please refer to Figures 5 and 6. In some embodiments, the snap-fit ​​arm includes a first snap-fit ​​segment 2131 connected to the pressing body 211, a second snap-fit ​​segment 2132 snap-fitted to the snap-fit ​​structure 23a, and an intermediate segment 2133 connected to the first snap-fit ​​segment 2131 and the second snap-fit ​​segment 2132. There is a height difference between the setting position of the first snap-fit ​​segment 2131 and the setting position of the second snap-fit ​​segment 2132. The plane where the intermediate segment 2133 is located is set at an acute angle α with the plane where the second snap-fit ​​segment 2132 is located.

[0132] Understandably, the first snap-fit ​​segment 2131 is the part connecting the snap-fit ​​arm to the pressing body 211, and the second snap-fit ​​segment 2132 is the part connecting the snap-fit ​​arm to the snap-fit ​​structure 23a. Furthermore, the intermediate segment 2133 connects the two snap-fit ​​segments, and when the second snap-fit ​​segment 2132 is snapped into the snap-fit ​​structure 23a, the inclined intermediate segment 2133 assists the second snap-fit ​​segment 2132 in snapping into the snap-fit ​​structure 23a, and also makes it easier for the second snap-fit ​​segment 2132 to disengage from the snap-fit ​​structure 23a.

[0133] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A circuit board, characterized in that, include: The board body has a first mounting surface, and the first mounting surface is provided with a connection position for connecting a flexible circuit board. A pressing assembly is used to press the flexible circuit board to the connection position. The pressing assembly includes a pressing member, a first mating member and a second mating member disposed on the first mounting surface. The first mating member includes a first mounting portion and a second mounting portion connected to the first mounting surface, and a first connecting portion connected to the first mounting portion and the second mounting portion. The first connecting portion forms a mounting gap with the first mounting surface. In the thickness direction of the board body, the projections of the first mounting portion and the second mounting portion do not coincide with the projection of the first connecting portion. The pressing member has a first end and a second end disposed opposite to the first end. The first end is inserted into the mounting gap, and the second end is engaged with the second mating member.

2. The circuit board according to claim 1, characterized in that: The first mounting portion has a first sidewall, the second mounting portion has a second sidewall opposite to the first sidewall, one end of the first connecting portion is connected to the first sidewall, and the other end of the first connecting portion is connected to the second sidewall.

3. The circuit board according to claim 2, characterized in that: One end of the first connecting portion is connected to the first sidewall and abuts against the first mounting surface; and / or, The other end of the first connecting part is connected to the second side wall and abuts against the first mounting surface.

4. The circuit board according to any one of claims 1 to 3, characterized in that: The pressing component includes a pressing body, an insertion portion at one end of the pressing body, and a snap-fit ​​portion at the other end of the pressing body. The insertion portion is formed at the first end, and the snap-fit ​​portion is formed at the second end.

5. The circuit board according to claim 4, characterized in that: The insertion portion includes an insertion arm bent and formed on the pressing body, and the insertion arm is inserted into the installation gap.

6. The circuit board according to claim 5, characterized in that: The insertion portion further includes an abutment arm formed on the pressing body, the abutment arm abutting against the first connection portion.

7. The circuit board according to claim 4, characterized in that: The snap-fit ​​portion includes a snap-fit ​​arm bent and formed on the pressing body, and the second mating member is provided with a snap-fit ​​structure that snaps into connection with the snap-fit ​​arm.

8. The circuit board according to claim 7, characterized in that: The pressing body is provided with a force-bearing part, which is used to achieve bending deformation of the pressing body so that the insertion part is disengaged from the installation gap.

9. The circuit board according to claim 7, characterized in that: The second mating component includes a third mounting portion and a second connecting portion. The third mounting portion has a third sidewall, and one end of the second connecting portion is connected to the third sidewall and abuts against the first mounting surface.

10. The circuit board according to claim 9, characterized in that: The snap-fit ​​structure is a snap-fit ​​hole formed on the second connecting part.

11. The circuit board according to claim 10, characterized in that: The third mounting part is provided with retaining edges for limiting the opposite sides of the snap-fit ​​arm.

12. The circuit board according to claim 9, characterized in that: The snap-fit ​​structure is a snap-fit ​​protrusion formed on the second connecting part.

13. The circuit board according to claim 12, characterized in that: The snap-fit ​​arm is provided with first protruding ribs for abutting against the opposite sides of the second connecting part.

14. The circuit board according to claim 7, characterized in that: The second mating part includes a third mounting part, a second connecting part, and a third connecting part. The third mounting part has a third sidewall and a fourth sidewall disposed opposite to the third sidewall. One end of the second connecting part is connected to the third sidewall and abuts against the first mounting surface, and one end of the third connecting part is connected to the fourth sidewall and abuts against the first mounting surface.

15. The circuit board according to claim 14, characterized in that: The second connecting portion curls toward the third connecting portion to form a first curved portion, and the third connecting portion curls away from the second connecting portion to form a second curved portion. The first curved portion and the second curved portion are spaced apart to form the snap-fit ​​structure.

16. The circuit board according to claim 15, characterized in that: The pressing body is provided with two second protruding ribs, each of which is located on opposite sides of the snap-fit ​​arm. The second protruding ribs are used to abut against the opposite sides of the second connecting part.

17. The circuit board according to claim 15, characterized in that: The snap-fit ​​arm includes a first snap-fit ​​section connected to the pressing body, a second snap-fit ​​section snapped into the snap-fit ​​structure, and an intermediate section connecting the first snap-fit ​​section and the second snap-fit ​​section. There is a height difference between the setting positions of the first snap-fit ​​section and the second snap-fit ​​section, and the plane of the intermediate section is set at an acute angle with the plane of the second snap-fit ​​section.

18. A terminal device, characterized in that: Includes the circuit board as described in any one of claims 1 to 17.

Images