Circuit board assembly and electronic device

Abstract

The application provides a circuit board assembly and an electronic device, relates to the technical field of electronic devices, and can reduce the occupied space of a pressing structure and is beneficial to installation in an electronic device with limited space. The circuit board assembly comprises a circuit board, a connecting piece, a shielding cover and a pressing support. The connecting piece is arranged on the circuit board. The shielding cover is arranged on the same side of the circuit board as the connecting piece, and the shielding cover is arranged on the circuit board and is arranged in a spaced manner with the connecting piece. The shielding cover is provided with a slot, and the opening of the slot faces the connecting piece. The pressing support comprises opposite plug-in parts and a connecting part, the plug-in parts are plugged into the slot, and the connecting part is connected to the connecting piece.

Description

Circuit board assembly and electronic device

[0001] The present application claims priority to the Chinese Patent Application No. 202421336113.4, filed on June 12, 2024, and entitled "Circuit board assembly and electronic device", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of electronic devices, and in particular to a circuit board assembly and an electronic device. BACKGROUND

[0003] In electronic devices such as mobile phones and tablet computers, there is a circuit board assembly, which includes a circuit board and electronic components disposed on the circuit board. The electronic components include, but are not limited to, board-to-board (BTB) connectors, ambient light modules, and the like.

[0004] In the circuit board assembly, a press-fit structure can be used to press-fit the electronic components to prevent the electronic components from falling off the circuit board. However, as electronic devices become smaller and more functional, the space inside the electronic devices is limited, and the press-fit structure needs to occupy less space. However, the prior art often cannot meet this requirement.

[0005] Utility model content

[0006] The present application provides a circuit board assembly and an electronic device, which can reduce the occupied space of the press-fit structure and facilitate installation in electronic devices with limited space.

[0007] To achieve the above-mentioned purpose, the embodiments of the present application adopt the following technical solutions:

[0008] In a first aspect, a circuit board assembly is provided, which includes a circuit board, a connecting piece, a shielding cover, and a press-fit support. The connecting piece is disposed on the circuit board. The shielding cover and the connecting piece are located on the same side of the circuit board, and the shielding cover is disposed on the circuit board and arranged in a spaced manner with the connecting piece. The shielding cover is provided with a slot, and the opening of the slot faces the connecting piece. The press-fit support includes opposite plug-in parts and a connecting part, the plug-in parts are plugged into the slots, and the connecting part is connected to the connecting piece.

[0009] In this way, the press-fit structure composed of the connecting piece and the press-fit support is provided with the slot by the shielding cover, and there is no need to specially provide a support for bearing the slot, so that the occupied space of the press-fit structure can be reduced, and installation in electronic devices with limited space is facilitated.

[0010] Optionally, the shielding cover comprises a shielding cover body and a limiting piece. The shielding cover body comprises a top wall, a side frame and a flange. The top wall is arranged spaced apart from the circuit board, the side frame is located between the top wall and the circuit board, and the flange is connected to an end of the side frame facing away from the top wall, and at least part of the flange is located between the side frame and the connecting piece. The limiting piece comprises a fixing part and a limiting part. The fixing part is located on a side of the top wall facing away from the circuit board and is fixed with the top wall. The limiting part comprises opposite first and second ends. The first end is connected to an end of the fixing part facing the connecting piece. From the first end to the second end, the limiting part extends to the part of the flange between the side frame and the connecting piece. And along the extension direction of the limiting part, the second end is arranged spaced apart from the flange, and the gap between the second end and the flange forms a slot. This structure is simple and compact, which is beneficial to reduce the occupied space of the pressing structure.

[0011] Optionally, the top wall comprises a first top wall part and a second top wall part. The first top wall part is located between the second top wall part and the connecting piece, and the distance from the surface of the first top wall part facing away from the circuit board to the circuit board is less than the distance from the surface of the second top wall part facing away from the circuit board to the circuit board. The fixing part is located on a side of the first top wall part facing away from the circuit board and is fixed with the first top wall part. In this way, the side of the first top wall part facing away from the circuit board forms a containing groove, and at least part of the fixing part can be contained in the containing groove, which can increase the flatness of the surface of the shielding cover facing away from the circuit board.

[0012] Optionally, the fixing part is welded and fixed to the first top wall part.

[0013] Optionally, the fixing part is provided with at least one first positioning hole. The first top wall part is provided with at least one second positioning hole. The at least one first positioning hole is respectively opposite and communicated with the at least one second positioning hole. In this way, at least one positioning column can be inserted into the at least one first positioning hole and the corresponding second positioning hole during the process of welding the fixing part on the first top wall part, which can play a positioning role on the fixing part and prevent the fixing part from being misaligned.

[0014] Optionally, the number of first positioning holes is two, and the number of second positioning holes is two. The two first positioning holes are respectively opposite and communicated with the two second positioning holes. In this way, two positioning columns can be inserted into the two first positioning holes and the corresponding second positioning holes during the process of welding the fixing part on the first top wall part, which can play a positioning role on the fixing part and prevent the fixing part from being misaligned. The number of first and second positioning holes is moderate, which can ensure the positioning accuracy, and at the same time ensure the integrity and shielding performance of the shielding cover.

[0015] Optionally, the compression bracket further comprises a bracket body and a transition portion. The transition portion comprises opposite third and fourth ends, the third end is connected to the end of the bracket body facing the shield shell, and the transition portion extends towards the circuit board from the third end to the fourth end. The insertion portion is connected to the fourth end and is located between the transition portion and the shield shell body. In this way, the insertion portion can be prevented from being inserted into the slot too far and damaging the side frame by the cooperation of the transition portion and the limiting portion.

[0016] Optionally, the length of the insertion portion in the insertion direction of the insertion portion is less than or equal to the distance from the surface of the limiting portion facing away from the side frame to the side frame. In this way, the insertion portion can be prevented from being pressed and damaged.

[0017] Optionally, the shield shell comprises a top wall, a side frame, a flange portion and a support portion. The top wall is arranged spaced apart from the circuit board, and the side frame is located between the top wall and the circuit board. The flange portion is connected to the end of the side frame facing away from the top wall, and at least part of the flange portion is located between the side frame and the connecting member. The part of the flange portion located between the side frame and the connecting member is a first flange portion, the support portion is connected to the end of the first flange portion away from the side frame, and the slot is arranged on the support portion. This structure is simple and easy to implement.

[0018] Optionally, the connecting member comprises a base portion and first and second buckles arranged on the base portion. The second buckle is located between the first buckle and the slot, and a buckle slot is formed between the first buckle and the second buckle, and the connecting portion is clamped in the buckle slot. In this way, after the second connector is connected to the first connector, the insertion portion of the compression bracket can be inserted into the slot first, and then the connecting portion of the compression bracket is clamped in the buckle slot. This assembly process is simple and convenient for assembly operation in a small space.

[0019] In a second aspect, an electronic device is provided, which comprises electronic components and the circuit board assembly according to any one of the preceding technical solutions. The electronic components are located between the connecting member and the shield shell of the circuit board assembly, and the electronic components are also located between the compression bracket and the circuit board of the circuit board assembly.

[0020] Since the electronic components are located between the connecting member and the shield shell of the circuit board assembly, and the electronic components are also located between the compression bracket and the circuit board of the circuit board assembly, the compression bracket can limit the position of the electronic components relative to the circuit board, preventing the electronic components from being separated from the circuit board. Moreover, the compression structure composed of the compression bracket and the connecting member has a small size, which can reduce the occupied space and facilitate installation in an electronic device with limited space.

[0021] Optionally, the electronic components comprise first and second connectors, the first connector is arranged on the circuit board, and the second connector is located on the side away from the circuit board of the first connector.

[0022] Optionally, the electronic device further comprises a component and an electrical connection structure. One end of the electrical connection structure is connected to the component, and the other end of the electrical connection structure is connected to the second connector.

[0023] Optionally, the electronic device further comprises a first housing, a second housing, a hinge mechanism, an inner screen and an outer screen. The hinge mechanism is connected between the first housing and the second housing to support the electronic device to switch between an unfolded state and a folded state. A part of the inner screen is arranged on the first housing, another part is arranged on the second housing, and the rest part is arranged on the hinge mechanism. The outer screen is arranged on a side of the first housing opposite to the inner screen and connected to the first housing. The outer screen forms the component, the circuit board assembly, the electronic component and the electrical connection structure are arranged in the first housing.

[0024] Optionally, when the electronic device is in the unfolded state, the electronic device is in a rectangular plate shape, and the first housing, the hinge mechanism and the second housing are arranged along the length direction of the electronic device. In this way, the electronic device is a vertical folding folding screen device. BRIEF DESCRIPTION OF DRAWINGS

[0025] FIG. 1 is a perspective view of an electronic device in an unfolded state according to some embodiments of the present application;

[0026] FIG. 2 is a perspective view of the electronic device shown in FIG. 1 in a half-folded state;

[0027] FIG. 3 is a perspective view of the electronic device shown in FIG. 1 in a folded state;

[0028] FIG. 4 is an exploded structural schematic view of the electronic device shown in FIGS. 1-3;

[0029] FIG. 5 is a front view of a circuit board assembly in the electronic device shown in FIG. 4;

[0030] FIG. 6 is a structural schematic view of a circuit board assembly according to some other embodiments of the present application;

[0031] FIG. 7 is a sectional structural schematic view of the circuit board assembly shown in FIG. 6 along A-A direction;

[0032] FIG. 8 is a local enlarged view of region I of the circuit board assembly shown in FIG. 7;

[0033] FIG. 9 is an exploded structural schematic view of the circuit board assembly shown in FIG. 6;

[0034] FIG. 10 is a perspective view of a part of the circuit board assembly according to some other embodiments of the present application. DETAILED DESCRIPTION

[0035] In the embodiments of the present application, the terms "first", "second", "third", "fourth" are only used for descriptive purpose and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", "third", "fourth" can explicitly or implicitly include one or more of the features.

[0036] In the embodiments of the present application, the terms "including", "comprising" or any other variants thereof are intended to cover the non-exclusive inclusion, so that the processes, methods, articles or devices including a series of elements not only include those elements, but also include other elements not explicitly listed or inherent to such processes, methods, articles or devices. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0037] The present application provides an electronic device, which is a kind of device with audio external playing function. Specifically, the electronic device can be a user equipment (UE) or a terminal device, etc. For example, the electronic device can be a portable android device (PAD), a notebook computer, a television, an all-in-one machine, a personal digital assistant (PDA), a handheld device with wireless communication function, a computing device, a vehicle-mounted device, a smart wearable device, a service robot, a wireless terminal in self driving, a wireless terminal in remote medical, a wireless terminal in smart city, a wireless terminal in smart home, etc. The following embodiments are exemplarily described with the electronic device as a folding screen device, which can be a folding screen mobile phone, for example.

[0038] Please refer to FIG. 1-3, FIG. 1 is a perspective view of an electronic device 10 in an unfolded state according to some embodiments of the present application, FIG. 2 is a perspective view of the electronic device 10 in a half-folded state according to some embodiments of the present application, and FIG. 3 is a perspective view of the electronic device 10 in a folded state according to some embodiments of the present application.

[0039] The electronic device 10 includes an inner screen 1, an outer screen 2 and a housing 3.

[0040] It can be understood that FIGS. 1-3 only schematically show some components included in the electronic device 10, and actual shapes, actual sizes, actual positions and actual structures of the components are not limited by FIGS. 1 and 2. In some other embodiments, the electronic device 10 can also not be provided with the inner screen 1 or the outer screen 2.

[0041] In addition, when the electronic device 10 is in the unfolded state, the electronic device 10 is in a rectangular plate shape. Based on this, in order to facilitate the description of each of the embodiments below, an XYZ coordinate system is established for the electronic device 10 in the unfolded state, and the width direction of the electronic device 10 is defined as the X-axis direction, the length direction of the electronic device 10 is defined as the Y-axis direction, and the thickness direction of the electronic device 10 is defined as the Z direction. It can be understood that the coordinate system of the electronic device 10 can be flexibly set according to actual needs, which is not specifically limited here. Of course, in some other embodiments, the electronic device 10 in the unfolded state can also be in a square plate shape, a circular plate shape, an elliptical plate shape, etc., which is not specifically limited by the present application.

[0042] The inner screen 1 is used to realize a large-screen display function when the electronic device 10 is in the unfolded state. The inner screen 1 can be a flexible screen, for example, the inner screen 1 can be an organic light-emitting diode (OLED) screen, a micro organic light-emitting diode screen or a quantum dot light emitting diode (QLED) screen. The outer screen 2 is used to realize a small-screen display when the electronic device 10 is in the folded state. The outer screen 2 can be a hard screen, for example, the outer screen 2 can be a liquid crystal display (LCD). Of course, in some other embodiments, the outer screen 2 can also be a flexible screen, which is not specifically limited by the present application.

[0043] The shell 3 is used to support the inner screen 1 and the outer screen 2, and allows the electronic device 10 to switch between the folded state and the unfolded state.

[0044] The shell 3 can include a first shell 31, a second shell 32, and a hinge mechanism 33 connected between the first shell 31 and the second shell 32. When the electronic device 10 is in the unfolded state, referring to FIG. 1, the first shell 31, the hinge mechanism 33, and the second shell 32 can be arranged in sequence along the Y-axis, and the hinge mechanism 33 extends along the X-axis direction. In this way, the electronic device 10 is a vertically folding folding screen device. In other embodiments, when the electronic device 10 is in the unfolded state, the first shell 31, the hinge mechanism 33, and the second shell 32 can also be arranged in sequence along the X-axis, and the hinge mechanism 33 extends along the Y-axis direction. In this way, the electronic device 10 is a horizontally folding folding screen device.

[0045] Part of the inner screen 1 is supported by the first shell 31, another part is supported by the second shell 32, and the rest is supported by the hinge mechanism 33. The outer screen 2 is arranged on the side of the first shell 31 opposite the inner screen 1.

[0046] The hinge mechanism 33 is used to enable relative rotation between the first shell 31 and the second shell 32, so as to change the included angle θ between the part of the inner screen 1 supported by the first shell 31 and the part supported by the second shell 32 on the display side of the inner screen 1, thereby realizing switching of the electronic device 10 between the folded state and the unfolded state. The display side of the inner screen 1 refers to the side toward which the display surface of the inner screen 1 faces, and the display surface of the inner screen 1 refers to the surface on which the inner screen displays videos or images.

[0047] In some embodiments, referring to FIG. 1, when the included angle θ is substantially equal to 180°, the inner screen 1 and the electronic device 10 are in the unfolded state. In this way, a large screen display can be realized by means of the inner screen 1, so as to bring richer visual effects to the user. When the included angle θ is substantially equal to 0°, referring to FIG. 3, the inner screen 1 and the electronic device 10 are in the folded state. In this way, the shell 3 protects the inner screen 1, avoiding pollution or scratching of the inner screen 1, and the size of the electronic device 10 is smaller, facilitating carrying. Referring to FIG. 3, when the electronic device 10 is in the folded state, the outer screen 2 is exposed, and a small screen display can be realized by means of the outer screen 2. When the included angle θ is an angle value between 0° and 180°, referring to FIG. 2, the electronic device 10 is in a semi-folded state.

[0048] Referring to FIG. 4, FIG. 4 is an exploded structural schematic diagram of the electronic device 10 shown in FIGS. 1-3. The electronic device 10 further includes a circuit board assembly 4. The circuit board assembly 4 can be arranged in the first shell 31. In other embodiments, the circuit board assembly 4 can also be arranged in the second shell 32. The circuit board assembly 4 can be the mainboard of the electronic device 10. In other embodiments, the circuit board assembly 4 can also be the subboard of the electronic device 10.

[0049] Please refer to Fig. 4 and Fig. 5, Fig. 5 is a front view of the circuit board assembly 4 in the electronic device 10 shown in Fig. 4. The circuit board assembly 4 comprises a circuit board 41, an electronic component 42 and a pressing structure 43.

[0050] The circuit board 41 can be a hard board, a soft board or a combination of hard and soft boards. The present application is exemplarily described with the circuit board 41 as a hard board. Specifically, the circuit board 41 can be a printed circuit board (PCB).

[0051] In some embodiments, the electronic component 42 can be a BTB connector. Of course, in other embodiments, the electronic component 42 can be an ambient light sensor or an adapter board, etc. The present application is exemplarily described with the electronic component 42 as a BTB connector.

[0052] The electronic component 42 comprises a first connector 421 and a second connector 422. Optionally, the first connector 421 can be a male seat of the BTB connector and the second connector 422 can be a female seat of the BTB connector. In other embodiments, the first connector 421 can be a female seat of the BTB connector and the second connector 422 can be a male seat of the BTB connector. The first connector 421 and the second connector 422 are inserted, contacted or welded to realize electrical conduction.

[0053] The electronic component 42 is arranged on the circuit board 41. In some embodiments, please refer to Fig. 4, the electronic component 42 can be arranged on the surface of the circuit board 41 facing the outer screen 2. Of course, in other embodiments, the electronic component 42 can be arranged on the surface of the circuit board 41 facing away from the outer screen 2. The present application is exemplarily described with the electronic component 42 arranged on the surface of the circuit board 41 facing the outer screen 2, which cannot be considered as a special limitation to the present application.

[0054] When the electronic component 42 is a BTB connector, please refer to Fig. 4 and Fig. 5, the first connector 421 is arranged on the circuit board 41 and the second connector 422 is located on the side of the first connector 421 facing away from the circuit board 41.

[0055] In some embodiments, please refer to Fig. 4, the electronic device 10 can further comprise a device M and an electrical connection structure 5. The device M can be the outer screen 2, in other embodiments, the device M can be a camera module, a flash module, a vibration motor, etc.

[0056] The electric connection structure 5 is arranged in the first shell 31. The electric connection structure 5 can be a flexible printed circuit (FPC) board, a PCB, a wire, or a structure formed by weaving a wire and a flexible material. The electric connection structure 5 is exemplarily described as an FPC board, which cannot be considered as a special limitation to the present application.

[0057] One end of the electric connection structure 5 is connected to the device M, and the other end is connected to the second connector 422. The second connector 422 is used to electrically connect the device M to the circuit board 41.

[0058] When the device M is the outer screen 2, as the size of the outer screen 2 increases and the function gradually improves, the width of the electric connection structure 5 is large. At the same time, due to the limited internal space of the first shell 31 and the large number of internal electronic components (such as a camera, a main control chip, a receiver, and a battery), the space for accommodating the electric connection structure 5 is small, resulting in a short length of the electric connection structure 5. In the process of mounting the outer screen 2 with the second connector 422 on the side of the first shell 31 opposite to the inner screen 1 to the first shell 31, the connection operation space of the second connector 422 on the first connector 421 is small due to the shielding of the large-area outer screen 2 and the short length of the electric connection structure 5, and the operation difficulty is large.

[0059] Referring to FIGS. 4 and 5, the pressing structure 43 includes a pressing bracket 431, a support 432, and a connecting piece 433. The support 432 and the connecting piece 433 are arranged on the circuit board 41. Optionally, the support 432 and the connecting piece 433 can be hardware, and the support 432 and the connecting piece 433 are welded and fixed on the circuit board 41. In other embodiments, the support 432 and the connecting piece 433 can be arranged on the circuit board 41 by means of gluing or threaded connection.

[0060] The support 432 and the connecting piece 433 are arranged in a spaced manner, and the electronic component 42 is located between the support 432 and the connecting piece 433. The support 432 is provided with a slot C, and the opening of the slot C faces the connecting piece 433. The pressing bracket 431 is located on the side of the electronic component 42 opposite to the circuit board 41, and the pressing bracket 431 includes opposite plug-in parts 431a and connecting parts 431b. The plug-in parts 431a are plugged into the slot C, and the connecting parts 431b are connected to the connecting piece 433.

[0061] In this way, the position of the electronic component 42 relative to the circuit board 41 is limited by the pressing structure 43, and the electronic component 42 is prevented from falling off the circuit board 41.

[0062] In some embodiments, referring to FIG. 5, the connecting piece 433 can include a base 433a, and a first clasp 433b and a second clasp 433c arranged on the base 433a. The second clasp 433c is located between the first clasp 433b and the slot C, and a clasp slot D is formed between the first clasp 433b and the second clasp 433c. The connecting portion 431b of the press-fit bracket 431 is clamped in the clasp slot D. In this way, after the second connector 422 is connected to the first connector 421, the plug-in portion 431a of the press-fit bracket 431 can be first plugged into the slot C, and then the connecting portion 431b of the press-fit bracket 431 is clamped in the clasp slot D. This assembly process is simple and convenient for assembly operation in a small space.

[0063] However, since the above-mentioned press-fit structure 43 includes three components, i.e., the press-fit bracket 431, the support piece 432 and the connecting piece 433, the volume of the press-fit structure 43 is large, and the space occupied in the electronic device 10 is large, which is not conducive to installation in the electronic device 10 with limited space.

[0064] To solve the above technical problems, referring to FIGS. 6-9, FIG. 6 is a structural schematic diagram of a circuit board assembly 4 provided by some embodiments of the present application, FIG. 7 is a structural schematic diagram of a cross section of the circuit board assembly 4 along A-A direction shown in FIG. 6, FIG. 8 is a local enlarged view of region I of the circuit board assembly 4 shown in FIG. 7, and FIG. 9 is an exploded structural schematic diagram of the circuit board assembly 4 shown in FIG. 6.

[0065] The circuit board assembly 4 can include a circuit board 41, electronic components (not shown in the figure), a press-fit structure 43 and a shielding cover 44. The structure, relative position relationship and position in the electronic device 10 of the circuit board 41 and the electronic components can be implemented according to any of the above-mentioned embodiments, and will not be described here.

[0066] The press-fit structure 43 can include a press-fit bracket 431 and a connecting piece 433. The connecting piece 433 is arranged on the circuit board 41. The structure of the connecting piece 433 and the arrangement manner of the connecting piece 433 on the circuit board 41 can be implemented according to any of the above-mentioned embodiments, and will not be described here.

[0067] The shielding cover 44 can be a metal conductive piece, and the shielding cover 44 can play an electromagnetic shielding role for the electronic components contained therein. The shielding cover 44 and the connecting piece 433 are located on the same side of the circuit board 41, and the shielding cover 44 is arranged on the circuit board 41. The shielding cover 44 can be adhesively fixed on the circuit board 41, or can be soldered fixed on the circuit board 41, which is not limited in the present application.

[0068] The shielding cover 44 is arranged apart from the connecting piece 433, and the shielding cover 44 is provided with a slot C, and an opening of the slot C faces the connecting piece 433. The structure of the press-fit support 431 can also be implemented according to the above-mentioned embodiments. The insertion part 431a of the press-fit support 431 is inserted into the slot C, and the connecting part 431b is connected to the connecting piece 433. The connecting manner of the connecting part 431b and the connecting piece 433 can be implemented according to any one of the above-mentioned embodiments, which will not be described herein.

[0069] In this way, the press-fit structure 43 is provided with the slot C by means of the shielding cover 44, and does not need to specially provide a support for bearing the slot C, so that the occupied space of the press-fit structure 43 can be reduced, which is beneficial to installation in the electronic device 10 with limited space.

[0070] The slot C can be arranged on the shielding cover 44 in various manners.

[0071] For example, as shown in FIGS. 6-9, the shielding cover 44 can include a shielding cover body 441 and a limiting piece 442.

[0072] The shielding cover body 441 includes a top wall 441a, a side frame 441b, and a flange part 441c. The top wall 441a is arranged apart from the circuit board 41. The side frame 441b is located between the top wall 441a and the circuit board 41, and the flange part 441c is connected to one end of the side frame 441b which is away from the top wall 441a. At least part of the flange part 441c is located between the side frame 441b and the connecting piece 433, that is, the flange part 441c can be partially located between the side frame 441b and the connecting piece 433, or can be entirely located between the side frame 441b and the connecting piece 433. The present application is exemplarily described by taking that part of the flange part 441c is located between the side frame 441b and the connecting piece 433. The shielding cover 44 can be fixed to the circuit board 41 by means of the flange part 441c.

[0073] The limiting piece 442 includes a fixing part 442a and a limiting part 442b. The fixing part 442a is located on a side of the top wall 441a which is away from the circuit board 41, and is fixed to the top wall 441a. The limiting part 442b includes opposite first and second ends a and b. The first end a is connected to one end of the fixing part 442a which faces the connecting piece 433. From the first end a to the second end b, the limiting part 442b extends to the part of the flange part between the side frame 441b and the connecting piece 433. Moreover, along the extension direction of the limiting part 442b, the second end b is arranged apart from the flange part 441c, and a gap between the second end b and the flange part 441c forms the slot C. This structure is simple and compact, and is beneficial to reducing the occupied space of the press-fit structure.

[0074] In some embodiments, please continue to refer to FIGS. 6-9, the top wall 441a comprises a first top wall portion 441a1 and a second top wall portion 441a2. The first top wall portion 441a1 is located between the second top wall portion 441a2 and the connecting piece 433, and the distance from the surface of the first top wall portion 441a1 facing away from the circuit board 41 to the circuit board 41 is less than the distance from the surface of the second top wall portion 441a2 facing away from the circuit board 41 to the circuit board 41. The side of the first top wall portion 441a1 facing away from the circuit board 41 forms a receiving groove. Based on this, the fixing portion 442a is located on the side of the first top wall portion 441a1 facing away from the circuit board 41 and is fixed with the first top wall portion 441a1. In this way, by receiving at least part of the fixing portion 442a in the receiving groove on the side of the first top wall portion 441a1 facing away from the circuit board 41, the flatness of the surface of the shielding cover 44 facing away from the circuit board 41 can be increased.

[0075] In the above embodiments, the fixing portion 442a can be adhesively fixed to the first top wall portion 441a1 or can be welded to the first top wall portion 441a1. The present application exemplarily illustrates that the fixing portion 442a is welded to the first top wall portion 441a1, and the welding method can be laser welding or solder paste welding, which is not limited in the present application.

[0076] In some embodiments, the fixing portion 442a is provided with at least one first positioning hole c1. “At least one” means one or more. The first top wall portion 441a1 is provided with at least one second positioning hole c2. The at least one first positioning hole c1 is respectively opposite and communicated with the at least one second positioning hole c2. In this way, during the welding of the fixing portion 442a on the first top wall portion 441a1, at least one positioning column can be inserted into the at least one first positioning hole c1 and the corresponding second positioning hole c2, which can position the fixing portion 442a and prevent the fixing portion 442a from being misaligned.

[0077] In some embodiments, please refer to FIG. 9, the number of first positioning holes c1 is two, and the number of second positioning holes c2 is two. The two first positioning holes c1 are respectively opposite and communicated with the two second positioning holes c2. In this way, during the welding of the fixing portion 442a on the first top wall portion 441a1, two positioning columns can be inserted into the two first positioning holes c1 and the corresponding second positioning holes c2, which can position the fixing portion 442a and prevent the fixing portion 442a from being misaligned. The number of first positioning holes c1 and second positioning holes c2 is moderate, which can ensure the positioning accuracy, and at the same time ensure the integrity and shielding performance of the shielding cover 44.

[0078] In some embodiments, referring to FIG. 8, the press-fit bracket 431 further comprises a bracket body 431c and a transition portion 431d. The transition portion 431d comprises opposite third and fourth ends c and d, the third end c is connected to an end of the bracket body 431c facing the shield 44, and the transition portion 431d extends towards the circuit board 41 from the third end c to the fourth end d. The insertion portion 431a is connected to the fourth end d, and the insertion portion 431a is located between the transition portion 431d and the shield body 441.

[0079] In this way, by means of the cooperation of the transition portion 431d and the limiting portion 442b, it can be avoided that the insertion portion 431a is inserted into the slot C too far and damages the side frame 441b.

[0080] In some embodiments, referring to FIG. 8, along the insertion direction of the insertion portion 431a (i.e., the X1 direction), the length of the insertion portion 431a is less than or equal to the distance from the surface of the limiting portion 442b facing away from the side frame 441b to the side frame 441b. In this way, it can be prevented that the insertion portion 431a is pressed and damaged the side frame 441b.

[0081] In some embodiments, referring to FIG. 10, FIG. 10 is a perspective view of a partial structure of a circuit board assembly 4 provided by some embodiments of the present application. In the present embodiment, the circuit board assembly 4 can comprise a circuit board (not shown in the figure), electronic components (not shown in the figure), a press-fit structure 43 and a shield 44. The structure, relative positional relationship and position in the electronic device 10 of the circuit board, electronic components and press-fit structure 43 can refer to any of the above embodiments, and will not be described here.

[0082] The shield 44 comprises a top wall 441a, a side frame 441b, a flange portion 441c and a support portion 441d. The top wall 441a is arranged spaced apart from the circuit board 41, and the side frame 441b is located between the top wall 441a and the circuit board 41. The flange portion 441c is connected to an end of the side frame 441b facing away from the top wall 441a. At least part of the flange portion 441c is located between the side frame 441b and the connecting piece 433, that is, the flange portion 441c can be partially located between the side frame 441b and the connecting piece 433, or the flange portion 441c can be located between the side frame 441b and the connecting piece 433 as a whole, and the present application is exemplarily described by taking the flange portion 441c as a whole located between the side frame 441b and the connecting piece 433.

[0083] In order to facilitate the description of each of the following embodiments, the part of the flange portion 441c located between the side frame 441b and the connecting piece 433 is defined as a first flange portion N1. The support portion 441d is connected to an end of the first flange portion N1 away from the side frame 441b, and the slot C is arranged on the support portion 441d. This structure is simple and easy to implement.

[0084] In the description of the specification, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A circuit board assembly, characterized by The application relates to a shielding cover for a circuit board. The shielding cover comprises: a shielding cover body, the shielding cover body comprising a top wall, a side frame and a flange portion; the top wall is arranged in a spaced manner relative to the circuit board; the side frame is located between the top wall and the circuit board; the flange portion is connected to one end of the side frame which is opposite to the top wall, and at least part of the flange portion is located between the side frame and the connecting piece; a limiting piece, the limiting piece comprising a fixing portion and a limiting portion; the fixing portion is located on one side of the top wall which is opposite to the circuit board and is fixed to the top wall; the limiting portion comprises opposite first and second ends; the first end is connected to one end of the fixing portion which is towards the connecting piece; from the first end to the second end, the limiting portion extends towards the part of the flange portion between the side frame and the connecting piece; and along the extending direction of the limiting portion, the second end is arranged in a spaced manner relative to the flange portion, and the gap between the second end and the flange portion forms the slot. The top wall comprises a first top wall portion and a second top wall portion; the first top wall portion is located between the second top wall portion and the connecting piece; and the distance from the surface of the first top wall portion which is opposite to the circuit board to the circuit board is smaller than the distance from the surface of the second top wall portion which is opposite to the circuit board to the circuit board.

2. The circuit board assembly of claim 1, wherein, The fixing portion is located on one side of the first top wall portion which is opposite to the circuit board and is fixed to the first top wall portion. The fixing portion is fixed to the first top wall portion by welding. The fixing portion is provided with at least one first positioning hole; the first top wall portion is provided with at least one second positioning hole; 3. The circuit board assembly of claim 2, wherein, The at least one first positioning hole is respectively opposite to and communicates with the at least one second positioning hole. The number of the first positioning holes is two, and the number of the second positioning holes is two; the two first positioning holes are respectively opposite to and communicate with the two second positioning holes.

4. The circuit board assembly of claim 3, wherein, The pressing support further comprises a support body and a transition portion; 5. The circuit board assembly of claim 3 or 4, wherein, The transition portion comprises opposite third and fourth ends; the third end is connected to the end of the support body which is towards the shielding cover; from the third end to the fourth end, the transition portion extends towards the circuit board; The insertion portion is connected to the fourth end, and the insertion portion is located between the transition portion and the shielding cover body.

6. The circuit board assembly of claim 5, wherein, Along the insertion direction of the insertion portion, the length of the insertion portion is smaller than or equal to the distance from the surface of the limiting portion which is opposite to the side frame to the side frame.

7. The circuit board assembly of any of claims 2-6, wherein, The shielding cover comprises a top wall, a side frame, a flange portion and a support portion; The top wall is arranged in a spaced manner relative to the circuit board; the side frame is located between the top wall and the circuit board; ​ 8. The circuit board assembly of claim 7, wherein, ​ 9. The circuit board assembly of claim 1, wherein, ​ ​ The flange part is connected to one end of the side frame which is opposite to the top wall, and at least part of the flange part is located between the side frame and the connecting piece; The part of the flange part between the side frame and the connecting piece is a first flange part, the support part is connected to one end of the first flange part which is away from the side frame, and the insertion slot is arranged on the support part.

10. The circuit board assembly of any of claims 1-9, wherein, The connecting piece comprises a base part and a first clasp and a second clasp arranged on the base part; The second clasp is located between the first clasp and the insertion slot, and a clasp slot is formed between the first clasp and the second clasp, and the connecting part is clamped in the clasp slot.

11. An electronic device, comprising: Comprise: Electronic components; The circuit board assembly as claimed in any one of claims 1-10, wherein the electronic components are located between the connecting piece and the shielding cover of the circuit board assembly, and the electronic components are also located between the press-fit support and the circuit board of the circuit board assembly.

12. The electronic device of claim 11, wherein, The electronic components comprise a first connector and a second connector, the first connector is arranged on the circuit board, and the second connector is located on the side of the first connector which is opposite to the circuit board.

13. The electronic device of claim 12, wherein, Further comprise: Components; An electrical connection structure, one end of the electrical connection structure is connected with the components, and the other end of the electrical connection structure is connected with the second connector.

14. The electronic device of claim 13, wherein, Further comprise: A first housing; A second housing; A hinge mechanism, the hinge mechanism is connected between the first housing and the second housing to support the electronic device to switch between an unfolded state and a folded state; An inner screen, part of the inner screen is arranged on the first housing, another part is arranged on the second housing, and the rest part is arranged on the hinge mechanism; An outer screen, the outer screen is arranged on the side of the first housing which is opposite to the inner screen and is connected with the first housing, the outer screen forms the components, and the circuit board assembly, the electronic components and the electrical connection structure are arranged in the first housing.

15. The electronic device of claim 14, wherein, When the electronic device is in the unfolded state, the electronic device is in a rectangular plate shape, and the first housing, the hinge mechanism and the second housing are arranged along the length direction of the electronic device.

Images