A PCB board electrical connection component

Abstract

This invention relates to a PCB electrical connection assembly, comprising a first PCB and a second PCB. Both the first and second PCBs have through holes extending along their thickness direction, and the walls of these through holes are provided with conductive layers. The PCB electrical connection assembly also includes conductors passing through the through holes in both PCBs, the conductors making conductive contact with the conductive layers of each through hole to achieve circuit continuity between the two PCBs. Compared to existing soldering methods, this method eliminates the risk of secondary high-temperature desoldering, removes potential quality issues, and allows the two PCBs to be bonded together, resulting in better heat dissipation. Furthermore, disassembly is easier when rework is required. Compared to existing pressure-fitting spring methods, this method eliminates the need for excessive clamping force on the two PCBs, facilitating automated assembly, and the bonded nature of the two PCBs further enhances heat dissipation.

Description

Technical Field

[0001] This invention relates to an electrical connection assembly for a PCB board. Background Technology

[0002] In the assembly of electrical components, it is sometimes necessary to connect two PCBs. Currently, there are two methods for this connection: the first method is as follows... Figure 1 As shown, the points requiring conductivity on the first PCB board 100 and the second PCB board 200 are soldered together to form a solder body 300, which enables circuit conductivity. The second method is as follows... Figure 2 As shown, there are conductive points at the lower end of the first PCB board 100 and the upper end of the second PCB board 200. A spring sheet 400 is press-fitted between the two conductive points. The elastic deformation of the spring sheet 400 ensures that the circuits of the two PCB boards are conductive.

[0003] The first method has several drawbacks. First, the soldering process risks secondary high-temperature desoldering of components already soldered on the two PCBs, posing a quality risk. Second, the solder joints between the two PCBs prevent them from fitting together properly, resulting in poor heat conduction. Heat cannot be quickly dissipated from one PCB, and the heat trapped in the air between them is also poor, leading to poor heat dissipation. Third, disassembly is difficult when rework is required. The second method is less suitable for automated assembly. Fourth, pressure perpendicular to the PCB surfaces is required to ensure elastic contact between the spring and the conductive point, resulting in a more complex structure. Fifth, a large gap exists between the two PCBs, leading to poor heat dissipation. Summary of the Invention

[0004] The purpose of this invention is to provide a PCB electrical connection assembly with good heat dissipation performance and excellent quality.

[0005] To achieve the above objectives, the technical solution of the PCB board electrical connection assembly provided by the present invention is: a PCB board electrical connection assembly, comprising:

[0006] First PCB board and second PCB board;

[0007] Both the first PCB board and the second PCB board are provided with through holes that extend along the thickness direction, and the walls of the through holes are provided with conductive layers.

[0008] The PCB electrical connection assembly also includes conductors passing through through holes in the two PCBs, wherein the conductors make conductive contact with the conductive layer of each through hole to achieve circuit conduction between the two PCBs.

[0009] Beneficial effects: By creating through-holes on two PCBs and applying a conductive layer to the hole walls, conductors are inserted through the through-holes, allowing the conductors to contact the conductive layer and thus achieving circuit continuity between the two PCBs. Compared to existing soldering methods, this eliminates the risk of secondary high-temperature desoldering, removing potential quality issues. Furthermore, the two PCBs can be bonded together, resulting in better heat dissipation. Disassembly is also easier when rework is required. Compared to existing pressure-fitting spring methods, excessive clamping force is not required on the two PCBs, facilitating automated assembly. The bonded bonding between the two PCBs further enhances heat dissipation.

[0010] Preferably, the conductor is a C-shaped cylinder with an opening on one side, which is held in place within the through holes of the two PCB boards by radial expansion and contraction. The radial expansion and contraction of the C-shaped cylinder ensures it is held firmly within the through holes of the two PCB boards, resulting in elastic contact between the C-shaped cylinder and the hole walls, leading to higher contact reliability and allowing for repeated assembly and disassembly.

[0011] Preferably, the inner diameters of the through holes in the first PCB board and the second PCB board are equal and the two through holes are arranged coaxially.

[0012] The C-shaped cylinder has a straight cylindrical section that penetrates through holes in two PCB boards, and also includes stop structures at both ends of the straight cylindrical section. The two stop structures are used to cooperate with the corresponding PCB board surfaces to prevent the C-shaped cylinder from detaching and being assembled onto the two PCB boards. The stop structures at both ends ensure that the C-shaped cylinder is reliably assembled onto the two PCB boards.

[0013] Preferably, both stop structures are integrally formed by bending the two ends of the straight cylindrical section radially outward. The stop structures are integrally formed at both ends of the straight cylindrical section, facilitating processing.

[0014] Preferably, the diameter of the through hole in the first PCB board is smaller than the diameter of the through hole in the second PCB board;

[0015] The C-shaped cylinder includes a first section that mates with a through hole in the first PCB board, and a second section that mates with a through hole in the second PCB board;

[0016] The second section is equipped with a spring arm that can elastically swing radially along the C-shaped cylinder. The spring arm is used to contact the wall of the through hole of the second PCB board to achieve circuit conduction. For cases where the through hole diameters of the two PCB boards are inconsistent, the elastic deformation of the spring arm on the second section can achieve contact and conduction with the second PCB board. The elastic deformation of the spring arm can also allow it to retract and be installed inside the through holes of the two PCB boards.

[0017] Preferably, one end of the elastic arm that swings radially is pressed against the surface of the first PCB board facing the second PCB board;

[0018] The first segment has a stop structure at one end opposite to the second segment. The stop structure engages with the other side of the first PCB board and cooperates with the spring arm to securely mount the C-shaped cylinder onto the two PCB boards. The cooperation between the spring arm and the stop structure ensures reliable assembly of the C-shaped cylinder onto the two PCB boards.

[0019] Preferably, the blocking structure is a first section of radially bent blocking arm, which cooperates with the first PCB board blocking, and at least two bent blocking arms are arranged at intervals along the circumference.

[0020] Preferably, one of the bending stop arms is provided with a bending plate, which has an adsorption surface for the adsorption structure to adsorb and grasp. By providing the bending plate, it is convenient for the adsorption structure to adsorb and grasp, facilitating automated assembly.

[0021] Preferably, the C-shaped cylinder includes a guide section for guiding the C-shaped cylinder into the through-hole of the PCB board, and the guide section includes at least a tapered guide portion. The tapered guide section facilitates the insertion of the C-shaped cylinder into the through-hole of the PCB board.

[0022] Preferably, the C-shaped cylinder is a straight cylinder of equal diameter. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the first electrical connection method in the prior art;

[0024] Figure 2 This is a schematic diagram of the structure of the second electrical connection method in the prior art;

[0025] Figure 3 This is a schematic diagram of the structure of Embodiment 1 of the PCB board electrical connection assembly of the present invention;

[0026] Figure 4 for Figure 3 Schematic diagram of the C-shaped cylinder structure;

[0027] Figure 5 This is a schematic diagram of the structure of Embodiment 2 of the PCB board electrical connection assembly of the present invention (conductive layer is not shown in the figure);

[0028] Figure 6 This is a schematic diagram of disassembling the C-shaped cylinder in Embodiment 2 of the PCB board electrical connection assembly of the present invention;

[0029] Figure 7 This is a schematic diagram of the structure of Embodiment 3 of the PCB board electrical connection assembly of the present invention;

[0030] Figure 8 This is a schematic diagram of the structure of embodiment 4 of the PCB board electrical connection assembly of the present invention;

[0031] Figure 9 for Figure 8 A structural schematic diagram of the C-shaped cylinder from a first-view perspective;

[0032] Figure 10 for Figure 8 A structural schematic diagram of the C-shaped cylinder from a second perspective;

[0033] Explanation of reference numerals in the attached figures:

[0034] 100. First PCB board; 200. Second PCB board; 300. Welded body; 400. Spring; 500. Conductive layer; 600. C-shaped cylinder; 601. Opening; 602. Straight cylinder section; 603. First bending section; 604. Second bending section; 605. Guide section; 606. First section; 607. Second section; 608. Spring arm; 609. Bending stop arm; 610. Bending plate; 700. Disassembly sleeve; 800. Top rod. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, and not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0037] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the process or method that includes said element.

[0038] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0039] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the term "provided with" should be interpreted broadly. For example, the object "provided with" can be a part of the main body, or it can be separately arranged from the main body and connected to the main body. This connection can be a detachable connection or a non-detachable connection. Those skilled in the art can understand the specific meaning of the above terms in this invention through specific circumstances.

[0040] The present invention will be further described in detail below with reference to the embodiments.

[0041] Specific embodiment 1 of the PCB board electrical connection assembly provided by the present invention:

[0042] like Figure 3 and Figure 4 As shown, the PCB electrical connection assembly includes a first PCB board 100 and a second PCB board 200. To connect the two PCB boards, through holes are provided on both the first PCB board 100 and the second PCB board 200, extending through the thickness of both PCB boards. A conductive layer 500 is present within each through hole in both the first PCB board 100 and the second PCB board 200; this conductive layer 500 is formed by brushing a conductive coating.

[0043] The PCB electrical connection assembly also includes a conductor that enables the circuitry of the first PCB 100 and the second PCB 200 to be connected. Here, the conductor is a C-shaped cylinder 600, which has an opening 601 on one side and can be stretched and contracted along the radial direction of the C-shaped cylinder 600.

[0044] In this embodiment, the diameters of the through holes in the first PCB board 100 and the second PCB board 200 are equal, and the C-shaped cylinder 600 is a cylinder of equal diameter. In use, the C-shaped cylinder 600 is inserted into the through holes of the first PCB board 100 and the second PCB board 200, and is fixed within the through holes by the deformation of the C-shaped cylinder 600, achieving conductive contact with the conductive layer 500 and realizing electrical connection. Compared with the welding method in the prior art, there are no quality risks, and the two PCB boards can be attached together, which is beneficial for heat dissipation. Compared with the spring-loaded method in the prior art, there is no need to apply continuous external pressure, and it is also beneficial for heat dissipation.

[0045] Specific embodiment 2 of the PCB board electrical connection assembly of the present invention:

[0046] like Figure 5 and Figure 6 As shown, the difference from Embodiment 1 is that in Embodiment 1, the C-shaped cylinder 600 is a straight cylinder of equal diameter. In this embodiment, the C-shaped cylinder 600 includes a straight cylinder section 602 with equal outer diameter. The straight cylinder section 602 is inserted into the through holes of the first PCB board 100 and the second PCB board 200 during use, tightened and fixed, and makes conductive contact with the hole wall. To prevent the C-shaped cylinder 600 from coming out of the through hole, the C-shaped cylinder 600 also includes a first bent section 603 and a second bent section 604 located at both axial ends of the straight cylinder section 602, wherein both the first bent section 603 and the second bent section 604 are bent radially outward. After bending, both the first bending segment 603 and the second bending segment 604 are located outside the first PCB board 100 and the second PCB board 200. The first bending segment 603 engages with the first PCB board 100, and the second bending segment 604 engages with the second PCB board 200. Through the engagement of the first bending segment 603 and the second bending segment 604, the C-shaped cylinder 600 can be securely mounted on the first PCB board 100 and the second PCB board 200 without detachment. The first bending segment 603 is located at the end of the C-shaped cylinder 600.

[0047] To facilitate the insertion of the C-shaped cylindrical body 600 into the through hole and for easy removal and removal, the C-shaped cylindrical body 600 also includes a guide section 605. The guide section 605 and the straight cylindrical section 602 are respectively located on both sides of the second bent section 604. The overall outer diameter of the guide section 605 is smaller than the diameter of the through hole in the PCB board. The end of the guide section 605 is a constant-diameter cylindrical body, and the area between the constant-diameter cylindrical body and the second bent section 604 is a tapered guide section. The outer diameter of the constant-diameter cylindrical body is equal to the small diameter end of the tapered guide section. In use, the constant-diameter cylindrical body can easily be inserted into the through hole, and the tapered guide section guides the second bent section 604 and the straight cylindrical section 602 into the through hole.

[0048] It should be noted that the C-shaped cylinder 600 is a one-piece bent structure, and the division is only based on the function and shape of each section.

[0049] like Figure 6 As shown, disassembling the C-shaped cylinder 600 requires special disassembly tools, which mainly include a disassembly sleeve 700 and a push rod 800. During disassembly, the disassembly sleeve 700 is inserted into the outside of the C-shaped cylinder 600 through the guide section 605. After the C-shaped cylinder 600 is tightened, the push rod 800 pushes the C-shaped cylinder 600 out of the first PCB board 100 and the second PCB board 200.

[0050] In this embodiment, the first bending section 603 and the second bending section 604 are both stop structures at both ends of the straight section 602.

[0051] Specific embodiment 3 of the PCB board electrical connection assembly of the present invention:

[0052] like Figure 7 As shown, the difference from Embodiment 2 is that in Embodiment 2, the portion of the C-shaped cylinder 600 located outside the PCB board is longer, occupying a larger axial space outside the board. In this embodiment, the inserted end of the C-shaped cylinder 600 is recessed into the board. The diameter of the through hole in the first PCB board 100 is smaller than the diameter of the through hole in the second PCB board 200, and the through holes in the two PCB boards are arranged coaxially. The C-shaped cylinder 600 is still an integrally bent structure, and the C-shaped cylinder 600 includes a first section 606 and a second section 607. The outer diameters of the first section 606 and the second section 607 are equal. The first section 606 is stretched in the through hole of the first PCB board 100 and contacts the hole wall of the through hole of the first PCB board 100 to achieve conductive communication. Multiple spring arms 608 are arranged on the second section 607. The spring arms 608 are formed by stamping on the side wall of the second section 607. One end of the spring arm 608 can swing elastically along the radial direction of the second section 607. The spring arm 608 can swing outward, thereby pressing against the hole wall of the through hole in the second PCB board 200 to achieve circuit conduction with the second PCB board 200.

[0053] like Figure 7 As shown, a guide section 605 is located at one end of the second segment 607. This guide section 605 is the same as that in Embodiment 2 and will not be described again here. The C-shaped cylinder 600 passes through the through hole of the first PCB board 100. During the passage, when the second segment 607 penetrates the first PCB board 100, the spring arm 608 retracts. When it passes through the second PCB board 200, the spring arm 608 elastically swings outward. Moreover, after the spring arm 608 elastically swings outward, one end of the spring arm 608 presses against the surface of the first PCB board 100, which can prevent the C-shaped cylinder 600 from coming off the first PCB board 100 during use. At the same time, in order to prevent the C-shaped cylinder 600 from coming off the second PCB board 200 during use, there is also a bending stop arm (not shown in the figure) at one end of the first segment 606. The bending stop arm cooperates with the surface of the first PCB board 100 to stop and cooperate with the spring arm 608 to securely mount the C-shaped cylinder 600 on the two PCB boards.

[0054] In this embodiment, as Figure 7 As shown, in order to improve the connection reliability between the C-shaped cylinder 600 and the first PCB board 100, there is also a conductive layer 500 on the surface of the first PCB board 100. The conductive layer 500 is located at the opening of the through hole in the first PCB board 100. The conductive layer 500 here cooperates with the bending stop arm 609 on the C-shaped cylinder 600 to realize circuit conduction.

[0055] In this embodiment, the bending stop arm 609 forms a stop structure on the first segment 606. The stop structure cooperates with the spring arm 608 to reliably assemble the C-shaped cylinder 600 onto the two PCB boards.

[0056] Compared to the method in Example 2, the C-shaped cylinder 600 has only one end located outside the two PCB boards, and its axial length is smaller.

[0057] Specific embodiment 4 of the PCB board electrical connection assembly of the present invention:

[0058] like Figures 8 to 10 As shown, the difference from Embodiment 3 is that in this embodiment, a bending plate 610 is integrally bent on one of the bending stop arms 609. The bending plate 610 has an adsorption surface, which facilitates the adsorption installation of adsorption structures such as suction nozzles during automated production and assembly. The remaining structures in this embodiment are the same as those in Embodiment 3, and will not be described again here.

[0059] Specific embodiment 5 of the PCB board electrical connection assembly of the present invention:

[0060] In Examples 2 to 4, the C-shaped cylinder all have a guide section, which includes a cylinder of equal diameter and a tapered guide portion. In this example, the guide section only includes the tapered guide portion. In other examples, the guide section is omitted, and the straight section of the C-shaped cylinder is directly inserted into the through hole.

[0061] Specific embodiment 6 of the PCB board electrical connection assembly of the present invention:

[0062] In Examples 2 to 4, the stopping structure on the C-shaped cylinder is an integral radially bent structure. In this example, a protrusion is punched out on the cylinder wall of the C-shaped cylinder, and reliable assembly is achieved by the protrusion engaging with the stopping mechanism of the PCB board.

[0063] Specific embodiment 7 of the PCB board electrical connection assembly of the present invention:

[0064] In Examples 3 and 4, a stop structure is provided on the first section of the C-shaped cylinder. In this example, the stop structure on the first section is removed, and the cylinder is held in place within the through hole by the tension of the C-shaped cylinder and the elastic deformation of the spring arm.

[0065] Specific embodiment 8 of the PCB board electrical connection assembly of the present invention:

[0066] In Example 2, both ends of the straight section of the C-shaped cylinder have stop structures. In this example, at least one of the stop structures is removed.

[0067] Specific embodiment 9 of the PCB board electrical connection assembly of the present invention:

[0068] In the above embodiments, the conductors inserted into the two PCB boards are all C-shaped cylinders. In this embodiment, the conductor is a closed cylinder, which is forcibly installed into the through hole of the PCB board to achieve a fixed assembly between the cylinder and the wall of the through hole.

[0069] Specific embodiment 10 of the PCB board electrical connection assembly of the present invention:

[0070] In Example 1, the conductive layer inside the through-hole was formed by brushing a conductive coating. In this example, the conductive layer inside the through-hole was formed by electrochemically depositing metal.

[0071] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A PCB electrical connection assembly, comprising: First PCB board and second PCB board; The feature is that: both the first PCB board and the second PCB board are provided with through holes that extend along the thickness direction, and the walls of the through holes are provided with conductive layers; The PCB electrical connection assembly also includes conductors passing through through holes in the two PCBs, with the conductors making conductive contact with the conductive layer of each through hole to achieve circuit conduction between the two PCBs. The conductor is a C-shaped cylinder with an opening on one side. The C-shaped cylinder is supported within the through holes of two PCB boards by radial expansion and contraction. The diameter of the through hole of the first PCB board is smaller than that of the through hole of the second PCB board. The C-shaped cylinder includes a first section that expands and conducts conductively with the through hole of the first PCB board, and a second section that engages with the through hole of the second PCB board. The outer diameters of the first and second sections are equal. The second section is provided with a spring arm that can elastically swing radially along the C-shaped cylinder. The spring arm is used to contact the wall of the through hole of the second PCB board. One end of the spring arm that elastically swings radially presses against the surface of the first PCB board facing the second PCB board. A stop structure is provided at the end of the first section away from the second section. The stop structure engages with the other side of the first PCB board and, together with the spring arm, secures the C-shaped cylinder to the two PCB boards to prevent it from detaching. The C-shaped cylinder includes a guide section located at the end of the second section away from the first section. The guide section includes at least a tapered guide portion for guiding the C-shaped cylinder into the through hole of the PCB board.

2. The PCB board electrical connection assembly according to claim 1, characterized in that: The stopping structure is an integral radially bent stopping arm (609) on the first segment (606). The bent stopping arm (609) cooperates with the first PCB board (100) for stopping. At least two bent stopping arms (609) are arranged at intervals along the circumference.

3. The PCB board electrical connection assembly according to claim 2, characterized in that: One of the bending stop arms (609) is provided with a bending plate (610), which has an adsorption plane for the adsorption structure to adsorb and grasp.

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