Circuit board assembly and electronic device

Abstract

This utility model relates to the field of electronic equipment technology, and provides a circuit board assembly and an electronic device. The circuit board assembly includes a first circuit board and a second circuit board. The first circuit board has a first coupling structure. The second circuit board is mounted on the first circuit board, and a second coupling structure is provided on the connection surface of the second circuit board. The second coupling structure is connected to the first coupling structure, and the second circuit board is perpendicular to the first circuit board. The connection surfaces of the first and second circuit boards are welded and fixed, and / or the first coupling structure and the second coupling structure are welded and fixed. The circuit board assembly provided by this utility model has high repeatability and stability in the entire assembly process. It can be automated using automated equipment, without much manual adjustment and intervention, thus reducing production costs and improving assembly efficiency.

Description

Technical Field

[0001] This utility model relates to the field of electronic equipment technology, and in particular to a circuit board assembly and an electronic device. Background Technology

[0002] In electronic devices, such as bullet cameras, there are specific angle requirements between different circuit boards. For example, the sensor circuit board is parallel to the camera's viewport, while the main board is parallel to the camera's body, thus placing the sensor circuit board perpendicular to the main board.

[0003] Currently, when connecting two vertically arranged circuit boards, either flexible connecting wires or patterned printed circuit boards (FPCBs) made of flexible substrates are used for connection, or vertical connectors are used to interlock with each other.

[0004] Using flexible connecting wires or patterned printed circuit boards (FPCBs) made of flexible substrates for connections not only increases the cost of sheet metal but also extends the assembly cycle.

[0005] When vertical connectors are used for interlocking, the connectors themselves require purchase costs; and during assembly, screws are needed for fixing, which increases installation procedures and labor costs, and reduces assembly efficiency.

[0006] In summary, existing technologies for connecting two vertically arranged circuit boards all suffer from varying degrees of increased costs and reduced assembly efficiency. Utility Model Content

[0007] This utility model provides a circuit board assembly and electronic device to solve the above-mentioned technical defects in the prior art. The entire assembly process of the circuit board assembly has high repeatability and stability. Automated assembly can be achieved using automated equipment without excessive manual adjustment and intervention, which can reduce production costs and improve assembly efficiency.

[0008] The first aspect of this utility model provides a circuit board assembly, comprising:

[0009] A first circuit board having a first coupling structure thereon;

[0010] A second circuit board is mounted on the first circuit. A second coupling structure is provided on the connection surface of the second circuit board. The second coupling structure is connected in cooperation with the first coupling structure. The second circuit board is perpendicular to the first circuit board.

[0011] Wherein, the connection surfaces of the first circuit board and the second circuit board are welded and fixed, and / or, the first coupling structure and the second coupling structure are welded and fixed.

[0012] According to the circuit board assembly provided by this utility model, one of the first coupling structure and the second coupling structure includes at least one card block, and the other of the first coupling structure and the second coupling structure includes at least one card slot that cooperates with at least one of the card blocks.

[0013] According to the circuit board assembly provided by this utility model, when the card block includes two or more, at least two of the card blocks have different sizes, and the size of the card slot is adapted to the size of the corresponding card block.

[0014] According to the circuit board assembly provided by this utility model, the card block includes a first protrusion and a second protrusion;

[0015] The width of the first protrusion is less than the width of the second protrusion, and / or the length of the first protrusion is less than the length of the second protrusion.

[0016] According to the circuit board assembly provided by this utility model, the first circuit board has a first pad on its plane and the second circuit board has a second pad on its connecting surface, and the first pad and the second pad are welded and fixed together.

[0017] According to the circuit board assembly provided by this utility model, the second pads are located on both sides of the second circuit board, and the second pads on both sides are staggered.

[0018] According to the circuit board assembly provided by this utility model, the gap between the second coupling structure and the first coupling structure is filled with solder.

[0019] The circuit board assembly provided by this utility model further includes:

[0020] The reinforcing member is welded to both the first circuit board and the second circuit board; or, the reinforcing member is welded to the second circuit board and abuts against the first circuit board.

[0021] According to the circuit board assembly provided by this utility model, the reinforcing member includes:

[0022] The first connecting part is soldered to the second circuit board via solder pads and abuts against the first circuit board;

[0023] The second connecting part is soldered to the second circuit board via solder pads;

[0024] The mounting part is located between the first connecting part and the second connecting part, and is integrally formed with the first connecting part and the second connecting part. The mounting part is perpendicular to the first connecting part and the second connecting part, and is provided with fixing holes.

[0025] A second aspect of this invention provides an electronic device, including a housing and a circuit board assembly as described in any one of the claims, the circuit board assembly being mounted on the housing.

[0026] The circuit board assembly provided by this utility model features a first coupling structure on a first circuit board and a second coupling structure on a second circuit board. The first and second circuit boards are connected via the first and second coupling structures, with the second circuit board perpendicular to the first circuit board. The connection surfaces or coupling structures of the first and second circuit boards are soldered together for fixation. This configuration provides high repeatability and stability throughout the assembly process, allowing for automated assembly using automated equipment without excessive manual adjustment or intervention, thus reducing production costs and improving assembly efficiency.

[0027] The first coupling structure and the second coupling structure can be mechanically connected, which can achieve stable positioning during the production process. The welding of the connecting surface or the coupling structure can be completed by automated equipment (such as automatic welding robots) according to a predetermined program, without the need for manual alignment, fixing and other operations, which can reduce labor costs.

[0028] Compared to the traditional method of using flexible connectors or vertical connectors to connect two vertically arranged circuit boards, the circuit board assembly provided by this utility model has a coupling structure that serves as both a connection and a positioning mechanism. After the first and second circuit boards are welded together, a stable electrical and mechanical connection is formed, enabling fully automated production, improving production efficiency, shortening the production cycle of a unit product, and reducing production costs.

[0029] In addition, the circuit board assembly provided by this utility model is easy to expand. If more circuit boards or functional modules need to be added, more second circuit boards can be connected on the basis of the first circuit board through a similar coupling structure, thereby meeting the needs of continuously increasing functions.

[0030] The electronic device provided by this utility model, by being equipped with the circuit board assembly provided by this utility model, also has the beneficial effects of reducing production costs and improving assembly efficiency. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0032] Figure 1This is a schematic diagram of the circuit board assembly provided in an embodiment of the present invention.

[0033] Figure 2 This is a schematic diagram of the structure of the first circuit board in the circuit board assembly provided in this embodiment of the utility model.

[0034] Figure 3 yes Figure 2 The top view of the first circuit board is shown.

[0035] Figure 4 yes Figure 2 The image shows a bottom view of the first circuit board.

[0036] Figure 5 This is a schematic diagram of the structure of the second circuit board in the circuit board assembly provided in this embodiment of the utility model.

[0037] Figure 6 yes Figure 5 The front view of the second circuit board is shown.

[0038] Figure 7 yes Figure 5 The rear view of the second circuit board is shown.

[0039] Figure label:

[0040] 10. First circuit board; 11. First coupling structure; 111. Slot; 111a. First groove; 111b. Second groove; 12. First solder pad;

[0041] 20. Second circuit board; 21. Second coupling structure; 211. Card block; 211a. First tab; 211b. Second tab; 22. Second pad;

[0042] 30. Reinforcing member; 31. First connecting part; 32. Second connecting part; 33. Mounting part; 34. Fixing hole. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0044] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly 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 connection; 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0045] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0046] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0047] Figure 1 This is a schematic diagram of the circuit board assembly provided in an embodiment of the present invention.

[0048] See Figure 1 This utility model provides a circuit board assembly that can be applied to electronic devices such as cameras, tablets, computers, and smart home appliances. The circuit board assembly includes a first circuit board 10 and a second circuit board 20.

[0049] A first coupling structure 11 is provided on the plane of the first circuit board 10. When designing the first circuit board 10, the position, shape and size of the first coupling structure 11 are determined according to the functional requirements of the entire circuit system.

[0050] The second circuit board 20 is mounted on the first circuit board 10 and is perpendicular to the first circuit board 10. The second circuit board 20 is provided with a second coupling structure 21, the design of which corresponds to the first coupling structure 11, that is, the shape and size of the second coupling structure 21 are adapted to the first coupling structure 11. The second circuit board 20 and the first circuit board 10 are positioned by the cooperation of the second coupling structure 21 with the first coupling structure 11, and then the connecting surfaces of the first circuit board 10 and the second circuit board 20 are welded and fixed, or the first coupling structure 11 and the second coupling structure 21 are welded and fixed. Alternatively, the connecting surfaces of the first circuit board 10 and the second circuit board 20, as well as the first coupling structure 11 and the second coupling structure 21, can be welded and fixed simultaneously.

[0051] For soldering between the connection surfaces of the first circuit board 10 and the second circuit board 20, surface mount technology (SMT) or wave soldering technology can be used. For soldering between the first coupling structure 11 and the second coupling structure 21, spot soldering technology or surface mount technology can be used.

[0052] The coupling structure can be configured as a slot 111 and a block 211, or as a pin and socket. For example, if a pin-type coupling structure is used, the pin spacing, length, and diameter parameters need to be precisely planned to ensure accurate mating with the second coupling structure 21. If a slot 111 and block 211 coupling structure is used, it is ensured that the block 211 can be smoothly inserted into the slot 111 and maintain a stable connection. When the second circuit board 20 is mounted on the first circuit board 10, the first coupling structure 11 and the second coupling structure 21 achieve positioning and connection through mechanical cooperation.

[0053] In the assembly process of the circuit board assembly provided in this embodiment of the utility model, firstly, the first circuit board 10 is prepared, and the first coupling structure 11 is checked to ensure it is intact. Then, the second coupling structure 21 on the second circuit board 20 is aligned with the first coupling structure 11, and the second circuit board 20 is mounted on the first circuit board 10. Initial positioning is achieved through the mechanical cooperation of the first coupling structure 11 and the second coupling structure 21. At this time, the coupling structures of the two are nested or engaged with each other, so that the second circuit board 20 is in a state perpendicular to the first circuit board 10.

[0054] Then, the connecting surfaces of the first circuit board 10 and the second circuit board 20 are soldered to ensure a firm connection in the vertical direction. If the first coupling structure 11 and the second coupling structure 21 also need to be soldered for fixation, the corresponding soldering operations are performed to further enhance the connection stability between the two.

[0055] It is understood that the circuit board assembly provided in this embodiment of the present invention, by providing a first coupling structure 11 on a first circuit board 10 and a second coupling structure 21 on a second circuit board 20, connects the first circuit board 10 and the second circuit board 20 through the first coupling structure 11 and the second coupling structure 21, and the second circuit board 20 is perpendicular to the first circuit board 10. The connecting surfaces or coupling structures of the first circuit board 10 and the second circuit board 20 are welded and fixed together. With this configuration, the entire assembly process of the circuit board assembly has high repeatability and stability, and automated assembly can be achieved using automated equipment, without excessive manual adjustment and intervention, thereby reducing production costs and improving assembly efficiency.

[0056] The first coupling structure 11 and the second coupling structure 21 can be mechanically connected, which can achieve stable positioning during the production process. The welding of the connecting surface or the coupling structure can be completed by automated equipment (such as an automatic welding robot) according to a predetermined program, without the need for manual alignment, fixing and other operations, which can reduce labor costs.

[0057] Compared to the traditional method of using flexible connectors or vertical connectors to connect two vertically arranged circuit boards, the circuit board assembly provided by this utility model has a coupling structure that serves as both a connection and a positioning mechanism. After the first and second circuit boards are welded together, a stable electrical and mechanical connection is formed, enabling fully automated production, improving production efficiency, shortening the production cycle of a unit product, and reducing production costs.

[0058] In addition, the circuit board assembly provided by this utility model is easy to expand. If more circuit boards or functional modules need to be added, more second circuit boards can be connected on the basis of the first circuit board 10 through a similar coupling structure, thereby meeting the needs of continuously increasing functions.

[0059] Figure 2 This is a schematic diagram of the structure of the first circuit board 10 in the circuit board assembly provided in this embodiment of the utility model. Figure 3 yes Figure 2 The top view of the first circuit board 10 shown. Figure 4 yes Figure 2 The bottom view of the first circuit board 10 is shown. Figure 5 This is a schematic diagram of the structure of the second circuit board 20 in the circuit board assembly provided in this embodiment of the utility model. Figure 6 yes Figure 5 The front view of the second circuit board 20 is shown. Figure 7 yes Figure 5 The rear view of the second circuit board 20 is shown.

[0060] See Figures 2 to 7In some embodiments of this utility model, one of the first coupling structure 11 and the second coupling structure 21 includes at least one card block 211, that is, it may include one card block 211 or two or more card blocks 211. The other of the first coupling structure 11 and the second coupling structure 21 includes at least one card slot 111 that cooperates with at least one card block 211, that is, when there is one card block 211, there is correspondingly one card slot 111, and the number of card slots 111 always corresponds to the number of card blocks 211.

[0061] The shape, size, and quantity of the locking blocks 211 can be designed according to specific application requirements. For example, the locking blocks 211 can be rectangular, circular, or other shapes, and the locking slots 111 are correspondingly designed to fit tightly with the locking blocks 211. The dimensions of the locking blocks 211 and the locking slots 111 must ensure sufficient mechanical strength and stability when they are engaged.

[0062] Furthermore, the card block 211 can be integrally formed with the corresponding circuit board, extending outward from the connecting surface of the corresponding circuit board.

[0063] During the assembly of the circuit board assembly, the locking block 211 forming the first coupling structure 11 is aligned with the locking slot 111 forming the second coupling structure 21, and then the locking block 211 is inserted into the locking slot 111. After the locking block 211 is inserted into the locking slot 111, the two can be further fixed by soldering, glue, or other fixing methods to enhance the strength of the connection. For example, glue can be applied to the contact surfaces of the locking block 211 and the locking slot 111 and then cured; or spot welding can be performed at the connection between the locking block 211 and the locking slot 111 to form a permanent connection.

[0064] It is understood that the present invention provides high mechanical strength and stability through the cooperation of the card block 211 and the card slot 111, ensuring that the two circuit boards or other components will not easily loosen or separate during use, and is suitable for application scenarios that need to withstand certain external forces or vibrations.

[0065] Because the engagement between the card block 211 and the card slot 111 has high repeatability and consistency, this coupling structure facilitates automated production and assembly during large-scale manufacturing, thereby improving production efficiency and product quality. For example, automated equipment can accurately insert the card block 211 into the card slot 111 and perform subsequent fixing and inspection operations.

[0066] In some embodiments of this utility model, when there are two or more card blocks 211, at least two card blocks 211 are different in size or shape, and the size or shape of the card slot 111 is adapted to the size or shape of the corresponding card block 211.

[0067] When there are two or more card blocks 211, they can be designed with different sizes or shapes, such as one card block 211 being rectangular and another being circular, and their sizes also differing. Correspondingly, the size and shape of the card slot 111 must precisely match the corresponding card block 211 to ensure that the card block 211 can be smoothly inserted into the card slot 111 and achieve a tight fit. For example, the card slot 111 corresponding to the rectangular card block 211 is rectangular, with its length and width dimensions matching the card block 211; the card slot 111 corresponding to the circular card block 211 is circular, with its diameter matching the diameter of the card block 211.

[0068] Continue reading Figures 5 to 7 In some embodiments of this utility model, the card block 211 includes a first protrusion 211a and a second protrusion 211b. The width of the first protrusion 211a is smaller than the width of the second protrusion 211b, or the length of the first protrusion 211a is smaller than the length of the second protrusion 211b, or both the length and width of the first protrusion 211a are smaller than the length and width of the second protrusion 211b.

[0069] Because the first tab 211a and the second tab 211b have different dimensions, this obvious size difference provides an intuitive visual identification feature during installation. Operators or automated equipment can determine the correct installation orientation of the locking block 211 by observing the difference in tab dimensions, thus preventing mistaken installation.

[0070] For example, in the assembly of a circuit board, when the card block 211 is inserted into the card slot 111, the combination of the narrower first protrusion 211a and the wider second protrusion 211b acts as a visual identifier to prevent the card block 211 from being inserted into the card slot 111 in the wrong direction, thereby avoiding problems such as circuit failure or unstable mechanical connection caused by incorrect installation direction.

[0071] Without error-proofing, incorrect installation of a single clip 211 during mass production assembly could lead to incorrect installation of a series of subsequent components, affecting the overall function and performance of the product. The design of different sizes for the first tab 211a and the second tab 211b prevents this error from occurring at the source, reducing the chain reaction caused by assembly errors and improving product quality and production efficiency.

[0072] Continue reading Figures 2 to 7 In some embodiments of this utility model, a first solder pad 12 is provided on the plane of the first circuit board 10, and a second solder pad 22 is provided on the connection surface of the second circuit board 20. The first solder pad 12 and the second solder pad 22 are soldered and fixed.

[0073] When the first pad 12 and the second pad 22 are soldered, the soldering process causes the two metal materials (pad material and solder) to form a metallurgical bond at the connection interface. This not only forms a strong mechanical connection, but also creates an electrical connection between the first circuit board 10 and the second circuit board 20. This ensures that the signal is transmitted accurately between the two circuit boards and avoids problems such as signal attenuation, reflection, or noise interference caused by weak connection. It provides a stable electrical foundation for the normal operation of the entire circuit system.

[0074] Continue reading Figure 3 In some embodiments of this utility model, the second pads 22 are located on both sides of the second circuit board 20, and the second pads 22 on both sides are staggered.

[0075] When the pads on both sides of the first circuit board 10 are misaligned, a natural spatial isolation is formed. During the manufacturing and use of the circuit board, for example, if excess solder overflows during soldering or if conductive foreign objects are present in the usage environment, the possibility of short circuits is reduced because the pads are not in the same plane.

[0076] Because the factors that cause a short circuit are difficult to simultaneously contact the pads on both sides. Normally, a short circuit requires a low-resistance connection path to be formed between two adjacent conductive parts, but the misaligned pads increase the complexity of this path.

[0077] In some embodiments of this utility model, the mating gap between the second coupling structure 21 and the first coupling structure 11 is filled with solder.

[0078] By filling the gap between the mating parts with solder, and then cooling and solidifying it to form an integral connection structure, the first coupling structure 11 and the second coupling structure 21 are firmly combined together. This allows the structure to withstand greater external forces and vibrations, making it less prone to loosening or separation, thus improving the mechanical stability of the overall structure.

[0079] Continue reading Figure 1 and Figure 5 In some embodiments of this utility model, the circuit board assembly further includes a reinforcing member 30, which is located between the first circuit board 10 and the second circuit board 20 and is welded to the first circuit board 10 and the second circuit board 20 respectively. Alternatively, the reinforcing member 30 is welded to the second circuit board 20 and abuts against the first circuit board 10.

[0080] The reinforcing member 30 can be made of metallic materials such as copper or aluminum, which have good electrical conductivity and mechanical strength. Its shape can be selected according to the specific circuit board design and space requirements, such as sheet, column, or other custom shapes. Welding connections can be made using traditional welding techniques, such as manual welding or automated welding.

[0081] It is understood that, in this embodiment of the invention, the addition of the reinforcing member 30 can significantly improve the overall mechanical strength of the circuit board assembly, making it more resistant to external impacts and vibrations, and reducing damage caused by mechanical stress. The reinforcing member 30 helps to fix the relative position of the first circuit board 10 and the second circuit board 20, preventing displacement or deformation during use, thereby improving the stability of the circuit board assembly.

[0082] Continue reading Figure 5 The reinforcing member 30 includes a first connecting part 31, a second connecting part 32, and a mounting part 33. The first connecting part 31 and the second connecting part 32 are both soldered to the second circuit board 20 through solder pads. That is, suitable solder pads are provided on the second circuit board 20 for the soldering parts with the reinforcing member 30. The size and shape of the solder pads match the first connecting part 31 and the second connecting part 32 of the reinforcing member 30 to ensure a good soldering contact area.

[0083] The mounting portion 33 is located between the first connecting portion 31 and the second connecting portion 32, and is integrally formed with the first connecting portion 31 and the second connecting portion 32 to form a U-shaped structure. The mounting portion 33 is respectively arranged perpendicularly to the first connecting portion 31 and the second connecting portion 32, and the first connecting portion 31 abuts against the first circuit board 10. When the circuit board assembly is subjected to external force, the reinforcing member 30 can effectively disperse the stress and improve the overall mechanical strength.

[0084] For example, when the circuit board assembly is subjected to impact or vibration, the reinforcement 30 can prevent the first circuit board 10 and the second circuit board 20 from relative displacement or bending deformation, thus protecting the electronic components on the circuit board from mechanical damage.

[0085] Additionally, a mounting hole 34 is provided on the mounting part 33, through which fasteners (such as bolts) pass to fix the second circuit board 20 to the front of an electronic device (such as a camera).

[0086] This utility model embodiment uses fasteners to fix the second circuit board 20 to the front of the electronic device, forming a stable connection. This prevents the circuit board from shifting, loosening, or shaking due to vibration, collision, or other reasons during device operation, ensuring that the relative position of the circuit board and other components of the device remains stable. This, in turn, ensures the stability of the overall structure of the device, reduces the risk of device damage, and improves the reliability and durability of the device.

[0087] It should be noted that the electronic components on the second circuit board 20 can be soldered with high-temperature tin. After the second circuit board 20 is soldered, it is added to the first circuit board 10 (main board) for processing as a component. The first circuit board 10 is soldered with low-temperature tin. At this time, the solder on the second circuit board 20 will not melt, and the electronic components on it remain stable. There is no need to provide separate protection or special treatment for the second circuit board 20, which simplifies the soldering process and improves the soldering efficiency.

[0088] In traditional soldering processes, the low melting point of solder can cause existing solder joints to remelt, leading to soldering defects such as cold solder joints and short circuits. However, this invention uses high-temperature solder to solder the second circuit board 20. During the subsequent low-temperature soldering of the first circuit board 10, the solder on the second circuit board 20 will not melt due to the low-temperature soldering temperature, ensuring the integrity and stability of the solder joints and reducing the occurrence of soldering defects.

[0089] This utility model embodiment also provides an electronic device, which includes a housing and a circuit board assembly as described above. The circuit board assembly is mounted on the housing and is used to realize the preset functions of the electronic device. The preset functions of the electronic device may include image acquisition, data processing, data storage, signal transmission and reception, data acquisition, data output, and other functions.

[0090] When the electronic device is a camera, in the circuit board assembly used in the camera, the first circuit board 10 can be a motherboard, and the second circuit board 20 can be a circuit board for an image sensor.

[0091] It is understandable that the electronic device provided by this utility model, because it is equipped with the circuit board assembly provided by this utility model, also has the beneficial effects of low manufacturing cost and high assembly efficiency.

[0092] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A circuit board assembly, characterized by include: A first circuit board having a first coupling structure thereon; A second circuit board is mounted on the first circuit board. A second coupling structure is provided on the connection surface of the second circuit board. The second coupling structure is connected to the first coupling structure. The second circuit board is perpendicular to the first circuit board. The connection surfaces of the first circuit board and the second circuit board are welded and fixed, and / or the first coupling structure and the second coupling structure are welded and fixed. A reinforcing member is welded to both the first circuit board and the second circuit board; or, the reinforcing member is welded to the second circuit board and abuts against the first circuit board, the reinforcing member comprising: The first connecting part is soldered to the second circuit board via solder pads and abuts against the first circuit board; The second connecting part is soldered to the second circuit board via solder pads; The mounting part is located between the first connecting part and the second connecting part, and is integrally formed with the first connecting part and the second connecting part. The mounting part is perpendicular to the first connecting part and the second connecting part, and the mounting part is provided with fixing holes.

2. The circuit board assembly of claim 1, wherein, One of the first coupling structure and the second coupling structure includes at least one card block, and the other of the first coupling structure and the second coupling structure includes at least one card slot that mates with at least one of the card blocks.

3. The circuit board assembly of claim 2, wherein, When the card block includes two or more, at least two of the card blocks have different sizes, and the size of the card slot is adapted to the size of the corresponding card block.

4. The circuit board assembly of claim 3, wherein, The card block includes a first protrusion and a second protrusion; The width of the first protrusion is less than the width of the second protrusion, and / or the length of the first protrusion is less than the length of the second protrusion.

5. The circuit board assembly of claim 1, wherein, The first circuit board has a first pad on its flat surface, and the second circuit board has a second pad on its connecting surface. The first pad and the second pad are soldered together.

6. The circuit board assembly of claim 5, wherein, The second pads are located on both sides of the second circuit board, and the second pads on both sides are staggered.

7. The circuit board assembly of claim 1, wherein, The gap between the second coupling structure and the first coupling structure is filled with solder.

8. An electronic device, comprising: It includes a housing and a circuit board assembly as described in any one of claims 1 to 7, the circuit board assembly being mounted on the housing.

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