PCB capable of positioning copper block installation

Abstract

The utility model relates to the technical field of circuit boards, in particular to a PCB (printed circuit board) capable of positioning copper block installation, which comprises a board card provided with a bonding pad and an annular ring. The board card is provided with a groove, and a carrier copper block is embedded in the groove. A hot melt adhesive layer is coated on the area of the board card for pressing and cutting the hole ring; a positioning piece is arranged in the groove in a matched mode, an elastic clamping opening is formed in the upper end of the positioning piece, and a spherical protruding block is arranged on the clamping opening. The side end of the carrier copper block is provided with a through groove matched with the spherical protruding block. According to the utility model, the hot melt adhesive layer is coated on the area where the hole cutting ring is pressed on the board card, so that burrs can be wrapped when the hole cutting ring is pressed on the board card, and the problem of short circuit caused by direct contact with the metal burrs when the metal cap is installed is avoided; by arranging the positioning piece, pre-fixing can be carried out when the carrier copper block is assembled, and the horizontal placing position of the copper block is guaranteed; the positioning piece can also be suitable for carrier copper blocks of different specifications and sizes, and the use effect of electric device products is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit boards, in particular to a PCB board capable of installing a positioning copper block. Background Art

[0002] PCB board is also called printed circuit board, printed circuit board, often using the English abbreviation PCB (Printed circuitboard), which is an important electronic component, a support for electronic components, and a provider of circuit connections for electronic components. Lead holes and pads are set on the PCB board. Electronic components are fixed on the PCB through the lead holes on the PCB with solder; printed wires connect the pads to achieve electrical connection of the components in the circuit. Copper blocks are installed on the PCB board to carry chips. Different sizes of copper blocks will change the dielectric constant of the PCB board. The change in dielectric constant can affect resistance and capacitance, thereby improving the performance of electrical device products using the PCB board.

[0003] The published Chinese patent, with publication number CN204116144U, discloses a buried copper block PCB board, including a PCB board body and a buried copper block; the PCB board body is provided with a gong groove; the side wall of the buried copper block is provided with an inwardly recessed groove; the buried copper block is arranged in the gong groove, and the buried copper block and the gong groove are connected by filling with resin during the process of pressing the PCB board body, and the two are connected after curing.

[0004] The buried copper block PCB board disclosed in the above patent has no pre-positioning when the copper block is installed, and the horizontal position cannot be guaranteed when connected by resin; and the PCB board can only install copper blocks of fixed specifications and sizes, which cannot meet the installation and use requirements for copper blocks of multiple specifications. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the present utility model is to provide a PCB board that can position copper blocks for installation, so as to solve the problem that the PCB board used in the prior art has no pre-positioning structure when installing copper blocks and cannot adapt to the installation of copper blocks of multiple specifications.

[0006] To achieve the above-mentioned purpose and other related purposes, the utility model provides a PCB board capable of positioning a copper block for installation, comprising a board card, a pad is provided on the board card, and hole rings are pressed and cut on the upper and lower sides of the pad;

[0007] A groove is provided on the board between two adjacent pads, and a carrier copper block is embedded in the groove for carrying the chip; the carrier copper block and the groove are filled and pressed together by resin, and the connection between the two is achieved after the resin is cured;

[0008] The area of ​​the plate card where the hole ring is pressed is coated with a hot melt adhesive layer to form an insulating layer on the inner edge of the hole ring;

[0009] A positioning piece is pre-installed in the groove, and the upper end of the positioning piece has an elastic clamping opening, and a spherical convex block is provided on the clamping opening;

[0010] The side end of the carrier copper block is provided with a through groove adapted to the spherical bump;

[0011] The positioning member clamps the carrier copper block through the clamping opening and abuts against the through groove through the spherical protrusion to realize the positioning of the carrier copper block.

[0012] In an embodiment of the present invention, the positioning member is configured as a tapered bracket structure that is narrow at the top and wide at the bottom.

[0013] In an embodiment of the present invention, the positioning member is formed by curing a resin material.

[0014] In an embodiment of the present invention, the height of the positioning member is smaller than the depth of the groove.

[0015] In an embodiment of the present invention, the thickness of the hot melt adhesive layer is 1-1.5 mm.

[0016] In one embodiment of the present invention, after the assembly is completed, the upper end surface of the carrier copper block embedded in the groove is on the same horizontal plane as the upper surface of the board.

[0017] As described above, the PCB board with a positionable copper block installation of the utility model has the following beneficial effects:

[0018] The utility model coats a hot melt adhesive layer in the area where the hole ring is pressed and cut on the board, and the hot melt adhesive layer can form an insulating layer. When the hole ring is pressed and cut on the board, the hot melt adhesive layer can cover the outside of the burr, so as to avoid the problem of short circuit caused by direct contact with the metal burr when the metal cap is installed, thereby improving the use effect of the PCB board product; by providing a positioning piece, the positioning piece is pre-installed in the groove of the board, and the carrier copper block can be pre-fixed by the positioning piece when assembling, so as to ensure the horizontal placement position of the copper block, improve the bearing effect of the carrier copper block on the chip, and facilitate the installation of the chip; the upper end of the positioning piece is provided with an elastic clamping mouth, and the elastic clamping mouth has a certain range of elastic deformation ability, and carrier copper blocks of different sizes within the elastic deformation range of the positioning piece can all be used. By selecting the carrier copper block of appropriate size, the dielectric constant of the PCB board can be changed, thereby improving the electrical performance, signal transmission quality and electromagnetic compatibility of the electrical device product, and improving the use effect of the electrical device product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Shown is a schematic diagram of the structure of the utility model.

[0020] Figure 2 Shown is a schematic cross-sectional structure diagram of the present utility model.

[0021] Figure 3 It is a schematic diagram showing the positioning member in the present invention cooperating with the carrier copper block.

[0022] Figure 4 Shown is a schematic diagram of the structure of multiple PCB boards.

[0023] Figure 5 Shown is a frequency distribution diagram of a PCB board using one of the specifications of a carrier copper block in Example 2.

[0024] Figure 6 Shown is the frequency distribution diagram of the PCB board with increased specifications of the carrier copper block in Example 2.

[0025] Component number description

[0026] Board card 1; pad 2; hole ring 3; groove 4; carrier copper block 5; through groove 51; hot melt adhesive layer 6; positioning piece 7; clamping mouth 71; spherical bump 72. DETAILED DESCRIPTION

[0027] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0028] See also Figures 1 to 6 It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change in the proportion relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the utility model without affecting the effects and purposes that can be achieved by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantially changing the technical content.

[0029] See also Figure 1-4 The utility model provides a PCB board with a positionable copper block installation, including a board card 1, a pad 2 is provided on the board card 1, and hole rings 3 are pressed and cut on the upper and lower sides of the pad 2, and the hole rings 3 are lead holes; a groove 4 is provided on the board card 1 between two adjacent pads 2, and a carrier copper block 5 is embedded in the groove 4 for carrying a chip; the carrier copper block 5 and the groove 4 are filled and pressed by resin, and the connection between the two is achieved after the resin is cured.

[0030] The area where the hole ring 3 is pressed and cut on the board 1 is coated with a hot melt adhesive layer 6, which is used to form an insulating layer on the inner edge of the hole ring 3. When the hole ring 3 is pressed and cut on the board 1, it can be coated on the outside of the burr, avoiding the problem of short circuit caused by direct contact with the metal burr when installing the metal cap, thereby improving the use effect of the PCB board product; the thickness of the hot melt adhesive layer 6 is 1-1.5mm. In this embodiment, the coating thickness of the hot melt adhesive layer 6 is set to 1.1mm, which can wrap the burrs generated when the hole ring 3 is pressed and cut.

[0031] The groove 4 is equipped with a positioning member 7, and the positioning member 7 is set as a conical bracket structure which is narrow at the top and wide at the bottom; the upper end of the positioning member 7 has an elastic clamping opening 71, and the clamping opening 71 is provided with a spherical protrusion 72; the side end of the carrier copper block 5 is provided with a through groove 51 adapted to the spherical protrusion 72; the positioning member 7 clamps the carrier copper block 5 through the clamping opening 71, and the spherical protrusion 72 abuts against the through groove 51 to realize the positioning of the carrier copper block 5. The positioning member 7 is pre-installed in the groove 4 of the board 1. When assembling the carrier copper block 5, it can be pre-fixed by the positioning member 7 to ensure the horizontal placement of the copper block, improve the bearing effect of the carrier copper block 5 on the chip, and facilitate chip installation; the upper end of the positioning member 7 is provided with an elastic clamp 71, and the elastic clamp 71 has a certain range of elastic deformation ability. Carrier copper blocks 5 of different sizes within the elastic deformation range of the positioning member 7 can be used. By selecting a carrier copper block 5 of appropriate specifications, the dielectric constant of the PCB board can be changed, thereby improving the electrical performance, signal transmission quality and electromagnetic compatibility of the electrical device product, and improving the use effect of the electrical device product.

[0032] The positioning member 7 is formed by curing resin material, which is the same as the material used to form a connection between the carrier copper block 5 and the groove 4, and the resin has consistency after curing. The height of the positioning member 7 is less than the depth of the groove 4. After the carrier copper block 5 embedded in the groove 4 is assembled, its upper end surface is on the same horizontal plane as the upper surface of the board 1.

[0033] Embodiment 2: This embodiment provides a set of verification data for verifying whether the product frequency can be adjusted by changing the size of the carrier copper block 5 of the PCB board.

[0034] Verification equipment: AD630-02, AB557A-01, test and weaving machine-03

[0035] Verification process: The same wafer was used for the experiment. 20 boards were packaged with a conventional PCB board, and 20 boards were packaged with an improved PCB board enlarged by a carrier copper block 5. The data were compared after the test.

[0036] Verification results: See Figure 5-6 The improved PCB board with enlarged copper sheet can adjust the product frequency, and the frequency is adjusted to 40K.

[0037] In summary, the utility model coats the hot melt adhesive layer 6 in the area where the hole ring is pressed on the board, so that when the hole ring 3 is pressed on the board 1, it can be covered on the outside of the burr, avoiding the problem of short circuit caused by direct contact with the metal burr when installing the metal cap; by setting the positioning member 7, it can be pre-fixed when assembling the carrier copper block 5 to ensure the horizontal placement of the copper block; the positioning member 7 can also be suitable for carrier copper blocks 5 of different sizes within the elastic deformation range of the positioning member, improving the use effect of the electrical device product containing the PCB board. Therefore, the utility model effectively overcomes various shortcomings in the prior art and has a high industrial utilization value.

[0038] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A PCB board capable of positioning a copper block for installation, comprising a board card (1), a soldering pad (2) being provided on the board card (1), and hole rings (3) being pressed and cut on both the upper and lower sides of the soldering pad (2); A groove (4) is provided on the board (1) between two adjacent pads (2), and a carrier copper block (5) is embedded in the groove (4) for carrying a chip. The carrier copper block (5) and the groove (4) are filled and pressed together with resin, and the connection between the two is achieved after the resin is cured; Features: The area on the board (1) where the hole ring (3) is pressed is coated with a hot melt adhesive layer (6) for forming an insulating layer on the inner edge of the hole ring (3); A positioning piece (7) is pre-installed in the groove (4), the upper end of the positioning piece (7) has an elastic clamping opening (71), and a spherical convex block (72) is provided on the clamping opening (71); The side end of the carrier copper block (5) is provided with a through groove (51) adapted to the spherical bump (72); The positioning member (7) clamps the carrier copper block (5) through the clamping opening (71) and abuts against the through groove (51) through the spherical protrusion (72) to achieve positioning of the carrier copper block (5).

2. The PCB board capable of being mounted with a positionable copper block according to claim 1, characterized in that: The positioning member (7) is configured as a conical support structure that is narrow at the top and wide at the bottom.

3. The PCB board capable of being mounted with a positionable copper block according to claim 2, characterized in that: The positioning member (7) is formed by curing a resin material.

4. The PCB board capable of being mounted with a positionable copper block according to claim 2, characterized in that: The height of the positioning member (7) is smaller than the depth of the groove (4).

5. The PCB board capable of being mounted with a positionable copper block according to claim 1, characterized in that: The thickness of the hot melt adhesive layer (6) is 1-1.5 mm.

6. The PCB board capable of being mounted with a positionable copper block according to claim 1, characterized in that: After the assembly is completed, the upper end surface of the carrier copper block (5) embedded in the groove (4) is on the same horizontal plane as the upper surface of the board (1).

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