A metal-based PCB board provided with a side wall with a right triangle connector
Patent Information
- Application Number
- CN202522115130.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-30
- Publication Date
- 2026-10-23
- Estimated Expiration
- 2035-09-30
AI Technical Summary
[0003]现有的埋嵌工艺为在PCB芯板上开比金属基大的通槽，将金属基放入槽内，采用PP将金属基与PCB黏合在一起，导致金属基于PCB接触面为四个侧面，二者相交表面积占比较小，导致PCB和金属基层的连接不够牢固，在PCB后制程及客户使用过程中存在金属基结合面断裂风险，导致散热失效，无法满足产品散热需求
[0015]根据上述方案的本实用新型，其有益效果在于，通过于芯板体开设通槽，将金属基设置于通槽内，由于金属基的两侧间隔开设多个相互翻转对称设置且竖直横截面形状为三角形的第一连接件和多个第二连接件，能够形成提升粘合剂流动的倾斜面且第二连接块还能阻挡金属基的上端，使得粘合剂从上而下填满第一连接槽，进而第二连接槽的粘合剂由于金属基上端被阻挡滞留于第二连接槽内，不仅增加金属基的侧面与通槽侧壁之间的接触面积，还使得金属基与芯板体之间连接更为牢固，提升了金属基与芯板体之间的连接强度。
Smart Images
Figure CN224890858U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of PCB board processing technology, and in particular to a PCB board with a metal base having right-angled triangular connectors on the sidewalls. Background Technology
[0002] With the development of the times, the use of electronic products has gradually increased, and the number of PCB boards used has also increased accordingly. Electronic components on PCB boards generate heat when they are working. In order to ensure the normal operation of electronic components, metal substrates are usually embedded in the PCB board, which can dissipate heat from the PCB board.
[0003] The existing embedding process involves creating a through-slot on the PCB core board that is larger than the metal base, placing the metal base inside the slot, and using PP to bond the metal base to the PCB. This results in the metal base having four sides in contact with the PCB, and the area of the intersecting surfaces being relatively small. Consequently, the connection between the PCB and the metal base is not strong enough, posing a risk of breakage at the metal base bonding surface during PCB manufacturing and customer use. This can lead to heat dissipation failure and fail to meet the product's heat dissipation requirements. Utility Model Content
[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a PCB board with a metal base having right-angled triangular connectors on the sidewalls.
[0005] The technical solution of this utility model is as follows: A PCB board with a metal base having right-angled triangular connectors on the sidewalls includes: a metal base and a core board. A through slot is formed on the core board, and the metal base is disposed in the through slot. Multiple first connectors and multiple second connectors are provided on both sides of the metal base. The first connectors and second connectors are triangular in shape and are arranged symmetrically by flipping. The sidewalls of the through slots have first connecting grooves and second connecting grooves, the positions of which correspond to the positions of each first connector and each second connector. The first connectors are inserted into the first connecting grooves and are spaced apart from the sidewalls of the first connecting grooves. The second connectors are inserted into the second connecting grooves and are spaced apart from the sidewalls of the second connecting grooves. The through slots, each first connecting groove, and each second connecting groove are filled with adhesive.
[0006] Preferably, the through groove is located at the exact center of the core plate, and the metal base is disposed in the middle of the through groove.
[0007] Preferably, a plurality of third connectors and fourth connectors are provided at intervals at both ends of the metal base, and a third connecting groove and a fourth connecting groove are provided on the side wall of the through groove, the positions of which correspond to each of the third connectors and fourth connectors, and the adhesive is filled in each of the third connecting grooves, each of the fourth connecting grooves and the through groove.
[0008] Preferably, the shapes of each of the first connecting grooves, each of the second connecting grooves, each of the third connecting grooves and each of the fourth connecting grooves are all arc-shaped.
[0009] Preferably, the vertical cross-sections of each of the first connector, the second connector, the third connector, and the fourth connector are all right-angled triangles.
[0010] Preferably, the vertical cross-section of each of the first connector, the second connector, the third connector, and the fourth connector is an isosceles right triangle.
[0011] Preferably, the thickness of the metal base is equal to the thickness of each of the first connectors, each of the second connectors, each of the third connectors, and each of the fourth connectors.
[0012] Preferably, each of the first connectors and each of the second connectors are spaced at equal intervals.
[0013] Preferably, each of the first connectors and each of the second connectors are spaced at equal intervals.
[0014] Preferably, the horizontal and vertical distances from the apex of each of the first connector, the second connector, the third connector, and the fourth connector to the surface of the metal base are 0.1mm-0.25mm.
[0015] According to the above-described solution, the beneficial effect of this utility model is that by opening a through groove in the core board body and placing the metal base in the through groove, and by opening multiple first connectors and multiple second connectors that are symmetrically arranged and have a vertical cross-sectional shape of triangles on both sides of the metal base, an inclined surface that enhances the flow of adhesive can be formed, and the second connectors can also block the upper end of the metal base, so that the adhesive fills the first connector groove from top to bottom. As a result, the adhesive in the second connector groove is retained in the second connector groove because the upper end of the metal base is blocked. This not only increases the contact area between the side of the metal base and the side wall of the through groove, but also makes the connection between the metal base and the core board body more solid, thereby improving the connection strength between the metal base and the core board body. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of a PCB board with a metal base having right-angled triangular connectors on the sidewalls; Figure 2This is a top view of a PCB board with a metal base and right-angled triangular connectors on the sidewalls. Figure 3 This is a structural schematic diagram of the metal and the first to fourth connecting members; Figure 4 This is a three-dimensional exploded structural diagram of a PCB board with a metal base having right-angled triangular connectors on the sidewalls. Figure 5 This is a three-dimensional exploded structural diagram of a PCB board with a metal base having right-angled triangular connectors on the sidewalls.
[0017] In the figure, 10 is the core board body; 11 is the through groove; 12 is the core board; 13 is the copper base; 14 is the prepreg; 16 is the second connecting groove; 17 is the third connecting groove; 20 is the metal base; 21 is the first connector; 22 is the second connector; 23 is the third connector; 24 is the fourth connector; and 30 is the adhesive. Detailed Implementation
[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments: Example 1
[0019] like Figures 1 to 5 As shown, a PCB board with a metal base having right-angled triangular connectors on the sidewalls includes: a metal base 20 and a core board body 10. The core board body 10 is composed of multiple core boards 12, copper bases 13, and prepreg sheets 14. The top and bottom surfaces of each core board 12 are laminated with the copper base 13 to form a copper-clad laminate. The copper-clad laminates are bonded together by the prepreg sheets 14 to form a multi-layer structure core board body 10. The core board body 10 has a through slot 11, and the metal base 20 is disposed in the middle of the through slot 11 to facilitate the insertion of the metal base 20 into the through slot 11 and reduce the installation difficulty of the metal base 20.
[0020] like Figures 1 to 3As shown, multiple first connectors 21 and second connectors 22 are spaced apart on both sides of the metal base 20. The sidewalls of the through groove 11 have first connecting slots and second connecting slots 16 corresponding to the positions of each first connector 21 and each second connector 22. During installation, after inserting each first connector 21 and each second connector 22 into its corresponding first connecting slot and second connecting slot 16, gaps exist between the first connector 21 and the sidewall of the first connecting slot, between the second connector 22 and the sidewall of the second connecting slot 16, and between the side of the metal base 20 and the sidewall of the through groove 11. Adhesive 30 is injected and fills these gaps. It should be noted that adhesive 30 is PP adhesive, i.e., polypropylene-specific plastic adhesive, and the prepreg 14 is PP adhesive. After the adhesive 30 has cured, the metal base 20 is firmly fixed in the through groove 11 and each of the first connecting slots. The above structure not only facilitates the injection of adhesive 30, but also increases the bonding area and adhesive force between the metal base 20 and the core plate 10 by utilizing the cooperation between the first connector 21 and each first connecting groove, which significantly improves the bonding strength between the core plate 10 and the metal base 20 and facilitates subsequent processing.
[0021] Specifically, such as Figure 2 , Figure 4 and Figure 5 As shown, the vertical cross-sections of the first connector 21 and the second connector 22 are both triangular, forming an inclined surface that enhances the flowability of the adhesive. The first connector 21 and the second connector 22 are arranged symmetrically in a flipped configuration. The first connector 21 is narrower at the top and wider at the bottom, with its inclined side sloping outwards. When the adhesive flows along this inclined surface, it easily flows to the bottom of the first connector 21, allowing the adhesive to evenly fill the gap between the first connecting groove and the first connector 21 from bottom to top. The second connector 22 is wider at the top and narrower at the bottom, with its inclined side sloping inwards. After the adhesive enters the second connector 22 and the first connecting groove, the upper end of the second connector 22 can block the adhesive 30, causing the adhesive 30 to remain in the gap between the second connecting groove 16 and the second connector 22, thus improving the bonding effect between the metal base 20 and the core board 10.
[0022] In this embodiment, as Figure 1 and Figure 2 As shown, the through slot 11 is located at the very center of the core plate 10. This arrangement allows the metal base 20 in the through slot 11 to uniformly absorb the heat generated by the surrounding components. The metal base 20 is preferably made of copper, thereby significantly improving the overall heat dissipation efficiency.
[0023] In this embodiment, as Figure 2 , Figure 4 and Figure 5As shown, multiple third connectors 23 and fourth connectors 24 are spaced apart at both ends of the metal base 20. Third connecting grooves 17 and fourth connecting grooves, corresponding to the positions of each of the third connectors 23 and fourth connectors 24, are formed on the sidewall of the through groove 11. Each of the third connecting grooves 17, each of the fourth connecting grooves, and the through groove 11 is filled with the adhesive 30. This arrangement further enhances the connection area between the metal base 20 and the core board 10, thereby further improving the connection strength between the metal base 20 and the core board 10.
[0024] In this embodiment, as Figure 4 and Figure 5 As shown, the shapes of each of the first connecting grooves, each of the second connecting grooves 16, each of the third connecting grooves 17, and each of the fourth connecting grooves are all arc-shaped. The depth of each of the first connecting grooves, each of the second connecting grooves 16, each of the third connecting grooves 17, and each of the fourth connecting grooves gradually decreases from the top to the middle, and also gradually decreases from the bottom to the middle, forming an arc-shaped groove with an inner concave and outer convex shape. This results in more adhesive 30 remaining at the upper and lower ends of each of the first connecting grooves, each of the second connecting grooves 16, each of the third connecting grooves 17, and each of the fourth connecting grooves than adhesive 30 remains in the middle. This not only improves the connection strength at the upper and lower ends of the metal base 20, but also improves the connection strength between the middle of the metal base 20 and the core plate 10, thereby improving the overall connection strength between the metal base 20 and the core plate 10.
[0025] In this embodiment, as Figure 4 and Figure 5 As shown, the vertical cross-sections of each of the first connector 21, the second connector 22, the third connector 23, and the fourth connector 24 are all right-angled triangles. Specifically, each of the first connector 21, the second connector 22, the third connector 23, and the fourth connector 24 is an isosceles right-angled triangle, with one end of its hypotenuse connected to the top surface of the metal base 20 and the other end connected to the bottom surface of the metal base 20 via a right-angled side, or one end of its hypotenuse connected to the bottom surface of the metal base 20 and the other end connected to the top surface of the metal base 20 via a right-angled side. That is, the thickness of the first connector 21 to the fourth connector 24 is equal to the thickness of the metal base 20. It also allows each of the first connectors 21 and the third connector 23 to form an inclined surface that extends from the upper end to the lower end of the metal base 20, and the second connector 22 and the fourth connector 24 to form an inclined surface that extends from the lower end to the upper end of the metal base 20, so as to facilitate the flow of the adhesive 30 or to retain the adhesive 30 in the first connecting groove to the fourth connecting groove.
[0026] In this embodiment, as Figure 2 and Figure 3As shown, each of the first connectors 21 and each of the second connectors 22 are equidistantly spaced. That is, each side of the metal base 20 is divided into ten equal parts. The odd-numbered segments are provided with the first connectors 21 to 24, and the even-numbered segments are the intervals between the first connectors 21 and 22 or the third connectors 23 and 24. Specifically, the first connectors 21 and 22 are alternately arranged in the odd-numbered segments on both sides of the metal base 20, and the third connectors 23 and 24 are alternately arranged in the odd-numbered segments at both ends of the metal base 20. This arrangement increases the connection area between the metal base 20 and the core plate 10, and also allows heat to be dissipated from various parts of the core plate 10 using the first connectors 21 to 24.
[0027] In this embodiment, the horizontal and vertical distances from the apex of each of the first connector 21, the second connector 22, the third connector 23, and the fourth connector 24 to the surface of the metal base 20 are 0.1mm-0.25mm, and the widths of the first connector 21 to the fourth connector 24 are 0.1mm-0.25mm. The aforementioned vertical distance refers to the distance in the vertical direction from the apex of the first connector 21 to the outer surface of one side or one end of the metal base 20. The widths of the first connector 21 to the fourth connector 24 can be any value between 0.1mm and 0.25mm. This configuration simplifies the processing of the first connector 21 to the fourth connector 24, allowing the cutting tool to cut from above or below the first connector 21 to the fourth connector 24 in a single operation. Example 2
[0028] Unlike Embodiment 1, the side length of the metal base 20 is divided into N 0.5mm parts. When N is an odd number, a first connector 21 and a second connector 22 are spaced apart on both sides or at both ends of the metal base 20. A third connector 23 and a fourth connector 24 are provided at both ends of the metal base 20. The distance between the first connector 21 and the second connector 22 is 0.5mm, and the distance between the third connector 23 and the fourth connector 24 is 0.5mm. This arrangement can increase the connection area between the metal base 20 and the core board 10, and can also utilize the first connector 21 to the fourth connector 24 to conduct heat away from various parts of the core board 10.
[0029] The remaining structures are the same as in the embodiment, therefore, the remaining structures will not be described in detail.
[0030] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.
[0031] The present utility model patent has been described above with reference to the accompanying drawings. Obviously, the implementation of the present utility model patent is not limited to the above-described manner. Any improvements made by adopting the inventive concept and technical solution of the present utility model patent, or the direct application of the inventive concept and technical solution of the present utility model patent to other occasions without modification, are all within the protection scope of the present utility model.
Claims
1. A PCB board with a metal base having right-angled triangular connectors on the sidewalls, characterized in that, include: A metal base (20) and a core board (10) are provided. A through groove (11) is provided on the core board (10). The metal base (20) is disposed in the through groove (11). A plurality of first connectors (21) and a plurality of second connectors (22) are provided on both sides of the metal base (20). The shape of the first connectors (21) and the second connectors (22) is triangular. The first connectors (21) and the second connectors (22) are arranged symmetrically by flipping. A first connecting groove and a second connecting groove (16) are provided on the side wall of the through groove (11). The first connectors (21) are inserted into the first connecting groove and are spaced apart from the side wall of the first connecting groove. The second connectors (22) are inserted into the second connecting groove (16) and are spaced apart from the side wall of the second connecting groove (16). The through groove (11), each first connecting groove and each second connecting groove (16) are filled with adhesive (30).
2. A PCB board with a metal base having right-angled triangular connectors on the sidewalls according to claim 1, characterized in that, The through groove (11) is located at the center of the core plate (10), and the metal base (20) is located in the middle of the through groove (11).
3. A PCB board with a metal base having right-angled triangular connectors on the sidewalls according to claim 2, characterized in that, The metal base (20) has multiple third connectors (23) and fourth connectors (24) spaced apart at both ends. The sidewall of the through groove (11) has a third connecting groove (17) and a fourth connecting groove corresponding to each of the third connectors (23) and the fourth connectors (24). Each of the third connecting grooves (17), each of the fourth connecting grooves and the through groove (11) is filled with the adhesive (30).
4. A PCB board with a metal base having right-angled triangular connectors on the sidewalls according to claim 3, characterized in that, The shapes of each of the first connecting groove, each of the second connecting groove (16), each of the third connecting groove (17) and each of the fourth connecting groove are all arc-shaped.
5. A PCB board with a metal base having right-angled triangular connectors on the sidewalls according to claim 3, characterized in that, The vertical cross-sections of each of the first connector (21), the second connector (22), the third connector (23), and the fourth connector (24) are all right-angled triangles.
6. A PCB board with a metal base having right-angled triangular connectors on the sidewalls according to claim 5, characterized in that, The vertical cross-sections of each of the first connector (21), the second connector (22), the third connector (23), and the fourth connector (24) are all isosceles right triangles.
7. A PCB board with a metal base having right-angled triangular connectors on the sidewalls, as described in any one of claims 3-5, characterized in that, The thickness of the metal base (20) is equal to the thickness of each of the first connectors (21), each of the second connectors (22), each of the third connectors (23), and each of the fourth connectors (24).
8. A PCB board with a metal base having right-angled triangular connectors on the sidewalls, as described in any one of claims 3-5, characterized in that, Each of the first connectors (21) and each of the second connectors (22) are equidistantly spaced.
9. A PCB board with a metal base having right-angled triangular connectors on the sidewalls according to any one of claims 3-5, characterized in that, Each of the first connectors (21) and each of the second connectors (22) are equidistantly spaced.
10. A PCB board with a metal base having right-angled triangular connectors on the sidewalls according to claim 3, characterized in that, The horizontal and vertical distance from the apex of each of the first connector (21), the second connector (22), the third connector (23) and the fourth connector (24) to the surface of the metal base (20) is 0.1mm-0.25mm.