Circuit board connecting structure and electric appliance
By using vertical soldering connections on the circuit board edge and a multi-point connection design, the problems of large space occupation, high cost, and poor reliability in circuit board connection methods are solved, achieving a highly integrated and low-cost circuit layout.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SONG RES ELECTRONICS TECH
- Filing Date
- 2025-05-06
- Publication Date
- 2026-05-12
AI Technical Summary
Existing circuit board connection methods suffer from problems such as large space occupation, low wiring density, high cost, and poor reliability, especially in the case of limited planar space where it is difficult to achieve a highly integrated circuit layout.
The first and second circuit boards are connected by welding them vertically along the edge of the board. The wiring is carried out in the vertical space. Combined with multi-point connection and integrated molding design, the stability and reliability of the circuit board in three-dimensional space are ensured.
Without increasing the board area, it improves wiring density and integration, reduces production costs, enhances signal transmission reliability and circuit system stability, and solves the problem of insufficient space.
Smart Images
Figure CN224233909U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electrical appliances, and in particular to a circuit board connection structure and an electrical appliance. Background Technology
[0002] In existing technologies, circuit boards in electrical appliances use through-holes, blind vias, or flexible connectors to achieve interlayer interconnection. However, this connection method often has many problems. For example, traditional through-holes occupy a large space, limiting wiring density; blind vias have complex processes and high costs; and flexible connectors have poor reliability and are prone to poor contact. Moreover, some products have strict requirements on the board frame shape, which means that the product's circuit board cannot accommodate as many electronic components as possible within a limited planar space. Therefore, the current market demands a stacked board interconnection solution with higher integration and lower cost. Utility Model Content
[0003] Therefore, it is necessary to provide a circuit board connection structure and an appliance to address the problem of unreasonable connection methods between circuit boards in electrical appliances.
[0004] A circuit board connection structure includes: a housing assembly having a receiving cavity; a first circuit board disposed on the housing assembly and located in the receiving cavity; and a second circuit board connected to the first circuit board by welding in a vertical direction near one of the edges of the first circuit board close to the housing assembly, the second circuit board being located in the receiving cavity.
[0005] The above-disclosed circuit board connection structure effectively avoids the drawbacks of traditional through-hole, blind via, and flexible connector PCB stacking technologies compared to traditional solutions. Traditional through-holes occupy a large space, severely limiting wiring density. This structure, however, connects the second circuit board to the first circuit board vertically along the board edge, fully utilizing vertical space and significantly increasing wiring density while maintaining the same board frame size for the first circuit board. Blind vias are complex and costly, while the welding connection method used in this structure is simple and effectively reduces production costs. Flexible connectors suffer from poor reliability and poor contact, while welding connections offer higher stability and reliability, ensuring signal transmission quality. Furthermore, addressing the challenge of some products having strict requirements for board frame shape, preventing complete component placement within limited planar space, this structure expands the vertical board placement space by placing the second circuit board along the edge of the first circuit board. This cleverly solves the limitation imposed by the product's shape on the first circuit board frame, achieving higher integration without altering the product's appearance. This meets the market's urgent need for high-integration, low-cost stacking connection solutions, demonstrating broad application prospects and significant economic benefits. The housing provides a stable mounting space for the first and second circuit boards, ensuring that the two circuit boards are in the right position within the housing assembly, avoiding shaking or displacement due to external environmental influences, thereby ensuring the stability of the soldered connection and maintaining the reliability of signal transmission.
[0006] In one embodiment, the first circuit board includes a first mounting surface and a second mounting surface. The first mounting surface abuts against the housing assembly, and the second circuit board is welded to one of the edges of the second mounting surface near the housing assembly. The second circuit board and the second mounting surface are perpendicular to each other. Using welding to connect the second circuit board to the first mounting surface offers higher reliability compared to traditional flexible connectors. Welding provides a stable electrical connection, reduces signal transmission problems caused by poor contact, and ensures reliable signal transmission between the two circuit boards, thereby improving the performance and stability of the entire circuit system. Simultaneously, this connection method avoids the problems of large space occupation and limited wiring density associated with traditional through-holes, as well as the drawbacks of complex and costly blind via processes. The second circuit board is welded to the edge of the second mounting surface near the housing assembly and is perpendicular to the second mounting surface. This vertical connection method fully utilizes three-dimensional space, increasing the board layout space without increasing the planar area of the first circuit board. Especially for products with strict requirements on board frame shape and limited planar space, it solves the problem of not being able to fully place components within a limited planar space. By placing the second circuit board perpendicular to the edge of the first circuit board, the circuit board layout becomes more compact and rational, improving space utilization. The first mounting surface abuts against the enclosure assembly, allowing the first circuit board to be securely mounted on the enclosure assembly.
[0007] In one embodiment, the first circuit board has multiple first mounting holes arranged circumferentially around the first circuit board. The first circuit board is connected to the housing assembly through these mounting holes. By arranging multiple first mounting holes circumferentially around the first circuit board, the first circuit board and the housing assembly can be connected and fixed at multiple points. Compared to a single or a few connection points, this circumferentially distributed connection method can more evenly distribute external forces, such as vibration and impact, on the first circuit board, thereby effectively preventing damage or loosening of the first circuit board due to excessive local stress and ensuring a long-term stable connection between the first circuit board and the housing assembly. During installation, the multiple mounting holes can serve as positioning references, facilitating operators to accurately install the first circuit board into the predetermined position on the housing assembly, ensuring the relative positional accuracy of the circuit board and other components on the housing, which is beneficial for the subsequent installation of other components and the assembly of the entire system, improving assembly efficiency and quality.
[0008] In one embodiment, the first mounting hole has a circular cross-sectional shape. By setting the cross-sectional shape of the first mounting hole to be circular, a regular geometric shape, drilling circular mounting holes during circuit board manufacturing is relatively simple, allows for easy precision control, reduces processing difficulty and cost, and improves production efficiency. Furthermore, the smooth edges of a circular hole, without sharp corners, prevent stress concentration during processing, reducing the possibility of cracks or other defects on the circuit board. When a circular mounting hole mates with bolts, screws, or other connectors, it provides a uniform force distribution. Regardless of how the connector rotates within the hole, its contact area and pressure distribution with the hole wall remain relatively uniform, preventing excessive localized stress. This ensures a more stable and reliable connection between the first circuit board and the housing assembly, allowing it to better withstand various external forces during equipment operation.
[0009] In one embodiment, the second circuit board includes a second circuit board body and multiple fixing members. These fixing members are disposed on the second circuit board body. The first circuit board has multiple second mounting holes. The second circuit board body is correspondingly disposed on the multiple second mounting holes of the first circuit board via the multiple fixing members. By corresponding the multiple fixing members to the multiple second mounting holes, a multi-point connection can be formed between the second circuit board body and the first circuit board. This connection method can evenly distribute the weight and force of the second circuit board onto the first circuit board, avoiding stress concentration problems that may occur with single-point connections. This ensures a stable and reliable connection between the two circuit boards, enabling them to withstand external forces such as vibration and impact during equipment operation without loosening or falling off. The cooperation between the fixing members and the mounting holes provides precise positioning for the installation of the second circuit board. During installation, simply aligning the fixing members with the corresponding second mounting holes ensures that the second circuit board is accurately installed in the predetermined position on the first circuit board, guaranteeing the relative positional accuracy between the two circuit boards. This is beneficial for the accuracy of subsequent electrical connections and the normal operation of the entire circuit system.
[0010] In one embodiment, the second circuit board body includes a contact surface and a welding surface. The contact surface abuts against the first circuit board, and the welding surface is welded to the first circuit board, with the welding surface perpendicular to the first circuit board. By abutting the contact surface against the first circuit board, the contact area between the two circuit boards is increased, making them fit together more tightly mechanically and able to withstand certain shear and tensile forces. Simultaneously, the welding surface provides strong bonding force, further enhancing the connection strength between the two circuit boards. This ensures that even under external forces such as vibration and impact during equipment operation, the second circuit board is not easily detached from the first circuit board, guaranteeing the stability and reliability of the entire circuit system. The perpendicular relationship between the first circuit board and the welding surface allows the second circuit board body to extend into three-dimensional space. The second circuit board body no longer competes with the first circuit board for space resources on the same plane; instead, it utilizes the vertical direction of its edges for layout, thereby adding additional board layout area without changing the size of the first circuit board frame, effectively solving the problem of insufficient planar space.
[0011] In one embodiment, the fastener has a square cross-sectional shape. By making the fastener's cross-sectional shape square, its shape effectively prevents the fastener and the connected second circuit board from rotating within the mounting hole after insertion into the second mounting hole of the first circuit board. Compared to a circular cross-section fastener, the four corners of the square fastener engage with the inner wall of the mounting hole, providing better positioning and ensuring that the second circuit board remains in a fixed position after installation. This helps ensure the stability of the connection between circuit boards and the accuracy of the electrical connection.
[0012] In one embodiment, the second mounting hole has a circular cross-sectional shape. By setting the cross-sectional shape of the second mounting hole to be circular, when the circular second mounting hole mates with a fastener with a square cross-sectional shape, although there will be a certain gap when the square fastener is inserted into the circular hole, it is precisely this gap that makes it easier for the fastener to be inserted into the hole during installation. The operator does not need to precisely align each side of the square fastener with the edge of the circular hole, reducing the installation difficulty and increasing the installation speed, especially in mass production, which can significantly improve assembly efficiency.
[0013] In one embodiment, the second circuit board body and the plurality of fasteners are integrally formed. This integral design means there are no seams between the second circuit board body and the fasteners, creating a continuous, monolithic structure. Compared to fasteners connected by welding, bonding, or other methods, the integral structure can better withstand external forces such as vibration and impact, reducing the risk of circuit board failure due to loosening or breakage at the connection points, and improving the reliability and stability of the entire circuit board assembly. During production, the integral manufacturing method allows for the simultaneous production of the second circuit board body and fasteners through a one-step molding process, eliminating the need for subsequent fastener installation steps, reducing production steps and assembly time, improving production efficiency, and lowering labor costs and production cycles.
[0014] In one embodiment, the enclosure assembly includes a mounting base plate and a protective side plate. The protective side plate surrounds the mounting base plate, and the protective side plate and the mounting base plate together form the receiving cavity. The first circuit board is disposed on the mounting base plate. By disposing the first circuit board on the mounting base plate, the mounting base plate provides a stable mounting surface for the first circuit board, allowing it to be fixed in a specific position and preventing movement or shaking due to external forces. The protective side plate, surrounding the mounting base plate and together with the mounting base plate, forms the receiving cavity, providing an integrated support structure not only for the first circuit board but also for other electronic components or devices that may be installed within the receiving cavity, ensuring that they maintain a relatively stable positional relationship during equipment operation.
[0015] In one embodiment, the mounting base plate includes a base plate body and mounting columns. Multiple mounting columns are arranged circumferentially around the base plate body. The first circuit board has multiple first mounting holes, each corresponding one-to-one with a mounting column. By arranging multiple mounting columns circumferentially around the base plate body and corresponding one-to-one with the multiple first mounting holes on the first circuit board, this design allows the first circuit board to be connected to the mounting base plate through multiple mounting points. Compared to a single connection point, multiple mounting columns can evenly distribute the gravity and other external forces on the first circuit board, effectively preventing deformation, tilting, or shaking of the circuit board due to uneven force distribution, thereby enhancing the stability and reliability of the first circuit board installation. The one-to-one correspondence between the mounting columns and the first mounting holes provides precise positioning for the first circuit board. During installation, simply aligning the first mounting holes of the first circuit board with the corresponding mounting columns allows for quick and accurate installation of the circuit board to the designated position, ensuring the positional accuracy of the first circuit board on the mounting base plate. This facilitates accurate connection of subsequent components to the first circuit board and contributes to the compactness and regularity of the entire internal structure of the device. The base plate and multiple mounting columns are integrally molded, making the mounting base plate a robust, monolithic structure. This one-piece molding process avoids the weaknesses that can exist in welding and splicing methods, such as incomplete welds or cracks, thereby improving the overall structural strength of the mounting base plate. This allows it to better withstand the weight of the first circuit board and other components that may be mounted on it. Furthermore, it effectively resists deformation and damage when the equipment is subjected to external forces such as vibration and impact, protecting the normal operation of the first circuit board and other components.
[0016] The second aspect of this application discloses an electrical appliance, which includes: the circuit board connection structure described above; and an electrical appliance body, wherein the circuit board connection structure is disposed on the electrical appliance body.
[0017] The second aspect disclosed above discloses an electrical appliance in which the circuit board connection structure is set on the appliance body, which can effectively solve the spatial layout problem caused by the product shape limitation. The second circuit board is set on the edge of the first circuit board and is vertically connected, making full use of the three-dimensional space and expanding the board layout space without changing the planar size of the first circuit board or increasing the shape of the board frame. Attached Figure Description
[0018] Figure 1 A 3D view of the circuit board connection structure;
[0019] Figure 2 This is a cross-sectional view of the circuit board connection structure;
[0020] Figure 3 This is a first perspective view of the housing assembly;
[0021] Figure 4 This is a second perspective view of the housing assembly;
[0022] Figure 5 This is a first perspective view of the first circuit board;
[0023] Figure 6 This is a second perspective view of the first circuit board;
[0024] Figure 7 This is a first perspective view of the second circuit board;
[0025] Figure 8 This is a second 3D view of the second circuit board.
[0026] The correspondence between the reference numerals and the component names is as follows:
[0027] 1. Box assembly, 11. Mounting base plate, 111. Base plate body, 112. Mounting column, 12. Protective side plate, 101. Receiving cavity;
[0028] 2 First circuit board, 21 First mounting surface, 22 Second mounting surface, 201 First mounting hole, 202 Second mounting hole;
[0029] 3 Second circuit board, 31 Second circuit board body, 311 Contact surface, 312 Welding surface, 32 Fixing component. Detailed Implementation
[0030] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0031] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.
[0032] The circuit board connection structure and electrical components of some embodiments of this utility model are described below with reference to the accompanying drawings.
[0033] Example 1
[0034] like Figures 1 to 8As shown, this embodiment discloses a circuit board connection structure, including: a housing assembly 1, the housing assembly 1 having a receiving cavity 101; a first circuit board 2, the first circuit board 2 being disposed on the housing assembly 1 and located in the receiving cavity 101; and a second circuit board 3, the second circuit board 3 being connected to the first circuit board 2 by welding in a vertical direction on one of the edges of the first circuit board 2 near the housing assembly 1, the second circuit board 3 being located in the receiving cavity 101.
[0035] This application discloses a circuit board connection structure. Compared with traditional PCB stacking technologies such as through-holes, blind vias, and flexible connectors, the structure of this application effectively avoids the drawbacks of traditional solutions. Traditional through-holes occupy a large amount of space, severely limiting wiring density. However, this structure connects the second circuit board 3 and the first circuit board 2 vertically along the edge of the board. While ensuring that the board frame size of the first circuit board 2 remains unchanged, it makes full use of vertical space and significantly increases wiring density. Blind vias are complex and costly to manufacture. The welding connection method used in this structure is simple and effectively reduces production costs. Flexible connectors suffer from poor reliability and easy contact problems. Welding connections offer higher stability and reliability, ensuring signal transmission quality. In addition, addressing the problem that some products have high requirements for board frame shape, resulting in the inability to fully arrange components on the circuit board within a limited planar space, this structure expands the vertical board placement space by placing the second circuit board 3 along the edge of the first circuit board 2. This cleverly solves the limitation of the product shape on the board frame of the first circuit board 2, achieving higher integration without changing the product shape. This meets the market's urgent need for high-integration, low-cost stacking connection solutions and has broad application prospects and significant economic benefits. The receiving cavity 101 provides a stable mounting space for the first circuit board 2 and the second circuit board 3, ensuring that the two circuit boards are in the right position within the housing assembly, avoiding shaking or displacement due to external environmental influences, thereby ensuring the stability of the soldered connection and maintaining the reliability of signal transmission.
[0036] like Figure 1 , Figure 2 , Figure 5 and Figure 6As shown, in addition to the features of the above embodiments, this embodiment further defines: the first circuit board 2 includes a first mounting surface 21 and a second mounting surface 22. The first mounting surface 21 abuts against the housing assembly 1. The second circuit board 3 is welded to one of the edges of the second mounting surface 22 near the housing assembly 1, and the second circuit board 3 and the second mounting surface 22 are perpendicular to each other. By using welding to connect the second circuit board 3 to the first mounting surface 22, higher reliability is achieved compared to traditional flexible connector connections. Welding provides a stable electrical connection, reduces signal transmission problems caused by poor contact, and ensures reliable signal transmission between the two circuit boards, thereby improving the performance and stability of the entire circuit system. Simultaneously, this connection method avoids the problems of large space occupation and limited wiring density associated with traditional through-holes, as well as the drawbacks of complex and costly blind via processes. The second circuit board 3 is welded to the edge of the second mounting surface 22 near the housing assembly 1 and is perpendicular to the second mounting surface 22. This vertical connection method fully utilizes three-dimensional space, increasing the board layout space without increasing the planar area of the first circuit board 2. Especially for products with strict requirements on board frame shape and limited planar space, this solution addresses the problem of not being able to fully accommodate components within a limited space. By placing the second circuit board 3 perpendicular to the edge of the first circuit board 2, the circuit board layout becomes more compact and rational, improving space utilization. The first mounting surface 21 abuts against the housing assembly 1, allowing the first circuit board 2 to be securely mounted on the housing assembly 1.
[0037] like Figure 6 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the first circuit board 2 is provided with a plurality of first mounting holes 201, which are arranged circumferentially around the first circuit board 2, and the first circuit board 2 is connected to the housing assembly 1 through the plurality of first mounting holes 201. By arranging the plurality of first mounting holes 201 circumferentially around the first circuit board 2, the first circuit board 2 and the housing assembly 1 can be connected and fixed at multiple points. Compared with a single or a few connection points, this circumferentially distributed connection method can more evenly distribute the external forces, such as vibration and impact, on the first circuit board 2, thereby effectively preventing the first circuit board 2 from being damaged or loosened due to excessive local force, and ensuring a long-term stable connection between the first circuit board 2 and the housing assembly 1. During installation, the plurality of mounting holes can serve as positioning references, making it convenient for operators to accurately install the first circuit board 2 into the predetermined position of the housing assembly 1, ensuring the relative positional accuracy of the circuit board and other components on the housing, which is beneficial for the subsequent installation of other components and the assembly of the entire system, improving assembly efficiency and quality.
[0038] like Figure 6As shown, in addition to the features of the above embodiments, this embodiment further specifies that the cross-sectional shape of the first mounting hole 201 is circular. By setting the cross-sectional shape of the first mounting hole 201 to be circular, a circle is a regular geometric shape. In the circuit board manufacturing process, it is relatively simple to process circular mounting holes using drilling technology, and it is easy to control the accuracy, which can reduce the processing difficulty and cost and improve production efficiency. Moreover, the edges of the circular hole are smooth and there are no sharp corners, which can avoid stress concentration during processing and reduce the possibility of cracks or other defects in the circuit board. When the circular mounting hole is used with bolts, screws and other connectors, it can provide a uniform force distribution. No matter how the connector rotates in the hole, its contact area and pressure distribution with the hole wall are relatively uniform, and it is not easy for excessive local stress to occur, thereby ensuring that the connection between the first circuit board 2 and the housing assembly 1 is more stable and reliable, and can better withstand various external forces during equipment operation.
[0039] like Figure 1 , Figure 6 and Figure 7 As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the second circuit board 3 includes a second circuit board body 31 and fixing members 32, and the number of fixing members 32 is multiple. Multiple fixing members 32 are disposed on the second circuit board body 31. The first circuit board 2 is provided with multiple second mounting holes 202, and the second circuit board body 31 is disposed on the multiple second mounting holes 202 of the first circuit board 2 through multiple fixing members 32 corresponding one-to-one. By configuring multiple fixing members 32 corresponding one-to-one with multiple second mounting holes 202, a multi-point connection can be formed between the second circuit board body 31 and the first circuit board 2. This connection method can evenly distribute the weight and force of the second circuit board 3 onto the first circuit board 2, avoiding stress concentration problems that may occur with single-point connections, thereby ensuring a stable and reliable connection between the two circuit boards, which can withstand external forces such as vibration and impact during equipment operation without loosening or falling off. The cooperation between the fixing members 32 and the mounting holes provides precise positioning for the installation of the second circuit board 3. During installation, simply align the fastener 32 with the corresponding second mounting hole 202 and install it to ensure that the second circuit board 3 is accurately installed in the predetermined position of the first circuit board 2. This ensures the relative positional accuracy between the two circuit boards, which is beneficial to the accuracy of subsequent electrical connections and the normal operation of the entire circuit system.
[0040] like Figure 2 , Figure 7 and Figure 8As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the second circuit board body 31 includes a contact surface 311 and a welding surface 312. The contact surface 311 abuts against the first circuit board 2, and the welding surface 312 is welded to the first circuit board 2. The welding surface 312 and the first circuit board 2 are perpendicular to each other. By abutting the contact surface 311 against the first circuit board 2, the contact area between the two circuit boards is increased, making them fit together more tightly mechanically and able to withstand certain shear and tensile forces. At the same time, the welding surface 312 is welded to the first circuit board 2, and the welding point provides a strong connection force, further enhancing the connection strength between the two circuit boards. This ensures that even if subjected to external forces such as vibration and impact during equipment operation, the second circuit board 3 is not easily detached from the first circuit board 2, ensuring the stability and reliability of the entire circuit system. The perpendicular relationship between the first circuit board 2 and the welding surface 312 allows the second circuit board body 31 to extend into three-dimensional space. The second circuit board body 3 no longer competes with the first circuit board 2 for space resources on the same plane. Instead, it utilizes the vertical direction of its board edge for layout, thereby adding an additional board layout area without changing the board frame size of the first circuit board 2, effectively solving the problem of insufficient planar space.
[0041] like Figure 7 As shown, in addition to the features of the above embodiments, this embodiment further specifies that the cross-sectional shape of the fixing member 32 is square. By setting the cross-sectional shape of the fixing member 32 to square, when the square fixing member 32 is inserted into the second mounting hole 202 of the first circuit board 2, its shape characteristics can effectively prevent the fixing member 32 and the connected second circuit board 3 from rotating within the mounting hole. Compared with a circular cross-section fixing member, the four corners of the square fixing member 32 engage with the inner wall of the mounting hole, providing a better limiting effect and ensuring that the second circuit board 3 maintains a fixed position after installation, which is beneficial to ensuring the stability of the connection between circuit boards and the accuracy of the electrical connection.
[0042] like Figure 6 As shown, in addition to the features of the above embodiments, this embodiment further specifies that the cross-sectional shape of the second mounting hole 202 is circular. By setting the cross-sectional shape of the second mounting hole 202 to be circular, when the circular second mounting hole 202 mates with the square-shaped fastener 32, although there will be a certain gap when the square fastener 32 is inserted into the circular hole, it is precisely this gap that makes it easier for the fastener 32 to be inserted into the hole during installation. The operator does not need to precisely align each side of the square fastener with the edge of the circular hole, reducing the installation difficulty and increasing the installation speed. Especially in mass production, it can significantly improve assembly efficiency.
[0043] like Figure 7As shown, in addition to the features of the above embodiments, this embodiment further defines that the second circuit board body 31 and the plurality of fasteners 32 are integrally formed. By designing the second circuit board body 31 and the plurality of fasteners 32 as an integral form, integral forming means that there are no connection gaps between the second circuit board body 31 and the fasteners 32, forming a continuous, integral structure. Compared to fasteners 32 connected by welding, bonding, or other methods, the integrally formed structure can better withstand external forces, such as vibration and impact, reducing the risk of circuit board failure due to loosening or breakage of the connection points, and improving the reliability and stability of the entire circuit board assembly. In the production process, the integral forming manufacturing method can simultaneously manufacture the second circuit board body 31 and the fasteners 32 through a one-time molding process, eliminating the need for subsequent fastener 32 installation steps, reducing production steps and assembly time, improving production efficiency, and lowering labor costs and production cycle.
[0044] like Figure 1 and Figure 3 As shown, in addition to the features of the above embodiments, this embodiment further defines: the housing assembly 1 includes a mounting base plate 11 and a protective side plate 12. The protective side plate 12 is disposed around the mounting base plate 11, and the protective side plate 12 and the mounting base plate 11 enclose a receiving cavity 101. The first circuit board 2 is disposed on the mounting base plate 11. By disposing the first circuit board 2 on the mounting base plate 11, the mounting base plate 11 provides a stable mounting surface for the first circuit board 2, enabling it to be fixed in a specific position and preventing movement or shaking due to external forces. The protective side plate 12 is disposed around the mounting base plate 11 and together with the mounting base plate 11 constitutes the receiving cavity 101, providing an overall support structure not only for the first circuit board 2 but also for other electronic components or devices that may be installed in the receiving cavity 101, ensuring that they maintain a relatively stable positional relationship during equipment operation.
[0045] like Figure 3 and Figure 4As shown, in addition to the features of the above embodiments, this embodiment further specifies that: the mounting base plate 11 includes a base plate body 111 and mounting posts 112, and there are multiple mounting posts 112 arranged circumferentially around the base plate body 111. The first circuit board 2 is provided with multiple first mounting holes 201, and the multiple first mounting holes 201 are arranged one-to-one with the multiple mounting posts 112. By arranging multiple mounting posts 112 circumferentially around the base plate body 111 and corresponding one-to-one with the multiple first mounting holes 201 on the first circuit board 2, this design allows the first circuit board 2 to be connected to the mounting base plate 11 through multiple mounting points. Compared with a single connection point, multiple mounting posts 112 can evenly distribute the gravity and other external forces on the first circuit board 2, effectively preventing the circuit board from deforming, tilting or shaking due to uneven force, thereby enhancing the stability and reliability of the first circuit board 2 installation. The one-to-one correspondence between the mounting posts 112 and the first mounting holes 201 provides precise positioning for the first circuit board 2. During installation, simply aligning the first mounting hole 201 of the first circuit board 2 with the corresponding mounting post 112 allows for quick and accurate installation of the circuit board into the designated position. This ensures the positional accuracy of the first circuit board 2 on the mounting base plate 11, facilitating accurate connection of subsequent components to the first circuit board 2 and contributing to the compactness and regularity of the entire internal structure of the equipment. The base plate body 111 and multiple mounting posts 112 are integrally formed, making the mounting base plate 11 a robust, unified structure. This integral forming process avoids potential weaknesses in welding and splicing methods, such as incomplete soldering or cracks, thereby improving the overall structural strength of the mounting base plate 11. This allows it to better withstand the weight of the first circuit board 2 and other components that may be mounted on it. Furthermore, it effectively resists deformation and damage when the equipment is subjected to external forces such as vibration and impact, protecting the normal operation of the first circuit board 2 and other components.
[0046] Example 2
[0047] like Figures 1 to 8 As shown, this embodiment discloses an electrical appliance, including: the circuit board connection structure described above; and an electrical appliance body, wherein the circuit board connection structure is disposed on the electrical appliance body.
[0048] The second aspect of this application discloses an electrical appliance in which the circuit board connection structure is set on the appliance body, which can effectively solve the spatial layout problem caused by the product shape limitation. The second circuit board 3 is set on the edge of the first circuit board 2 and is vertically connected, making full use of the three-dimensional space and expanding the board layout space without changing the planar size of the first circuit board 2 or increasing the board frame shape.
[0049] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0050] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A circuit board connection structure, characterized in that, The circuit board connection structure includes: A housing assembly (1) is provided with a receiving cavity (101); A first circuit board (2) is disposed on the housing assembly (1) and located in the receiving cavity (101); The second circuit board (3) is connected to the first circuit board (2) by welding in the vertical direction of one of the edges of the first circuit board (2) near the housing assembly (1), and the second circuit board (3) is located in the receiving cavity (101).
2. The circuit board connection structure according to claim 1, characterized in that, The first circuit board (2) includes a first mounting surface (21) and a second mounting surface (22). The first mounting surface (21) abuts against the housing assembly (1). The second circuit board (3) is welded to one of the edges of the second mounting surface (22) near the housing assembly (1). The second circuit board (3) and the second mounting surface (22) are perpendicular to each other.
3. The circuit board connection structure according to claim 2, characterized in that, The first circuit board (2) is provided with a first mounting hole (201), and there are multiple first mounting holes (201). The multiple first mounting holes (201) are arranged around the first circuit board (2) in a circumferential manner, and the first circuit board (2) is connected to the housing assembly (1) through the multiple first mounting holes (201).
4. The circuit board connection structure according to claim 3, characterized in that, The first mounting hole (201) has a circular cross-sectional shape.
5. The circuit board connection structure according to claim 1, characterized in that, The second circuit board (3) includes a second circuit board body (31) and a fixing member (32). There are multiple fixing members (32), and multiple fixing members (32) are disposed on the second circuit board body (31). The first circuit board (2) is provided with a second mounting hole (202), and there are multiple second mounting holes (202). The second circuit board body (31) is disposed on the multiple second mounting holes (202) of the first circuit board (2) one by one through the multiple fixing members (32).
6. The circuit board connection structure according to claim 5, characterized in that, The second circuit board body (31) includes a contact surface (311) and a welding surface (312). The contact surface (311) abuts against the first circuit board (2), and the welding surface (312) is welded to the first circuit board (2). The welding surface (312) is perpendicular to the first circuit board (2).
7. The circuit board connection structure according to claim 5, characterized in that, The cross-sectional shape of the fastener (32) is square; And / or the cross-sectional shape of the second mounting hole (202) is circular; And / or the second circuit board body (31) and the plurality of said fasteners (32) are integrally formed.
8. The circuit board connection structure according to claim 1, characterized in that, The enclosure assembly (1) includes a mounting base plate (11) and a protective side plate (12). The protective side plate (12) is arranged around the mounting base plate (11). The protective side plate (12) and the mounting base plate (11) together form the receiving cavity (101). The first circuit board (2) is disposed on the mounting base plate (11).
9. The circuit board connection structure according to claim 8, characterized in that, The mounting base plate (11) includes a base plate body (111) and mounting columns (112). There are multiple mounting columns (112), which are arranged circumferentially around the base plate body (111). The first circuit board (2) is provided with a first mounting hole (201), which is also multiple. The multiple first mounting holes (201) correspond one-to-one with the multiple mounting columns (112).
10. An electrical appliance, characterized in that, The electrical appliances mentioned include: The circuit board connection structure according to any one of claims 1 to 9; The electrical appliance body, and the circuit board connection structure is disposed on the electrical appliance body.