A shielding structure that can enclose the exterior of the host computer

Abstract

This utility model relates to a shielding cover structure for enclosing the exterior of a vehicle-mounted electrical device. It includes an upper cover and a lower cover. A functional PCB board, a core PCB board, and a main PCB board are stacked vertically within the lower cover. Each PCB board has several plug-in terminals on the same side. A core board shielding cover is connected to the core PCB board, and a main board shielding cover is provided on the main PCB board. The lower cover is a five-sided stamped part, with the upper cover correspondingly mounted on its sixth face. A partial gap is provided on one side of the five-sided piece, matching the shape of one side of the wiring terminals on the three-layer PCB board. The core board shielding cover and the main board shielding cover have bent ends on their outward sides, which cover the gaps between the plug-in terminals. This device facilitates automated assembly of the vehicle-mounted three-layer PCB board main unit, simplifies the structure, making it simple and compact, while achieving excellent shielding performance. It is suitable for use in vehicle-mounted three-layer PCB board main units.

Description

Technical Field

[0001] This utility model relates to the field of vehicle electrical devices, and in particular to a shielding device for a vehicle-mounted three-layer PCB board host. Background Technology

[0002] In existing technologies, a common vehicle-mounted three-layer PCB main unit typically consists of three stacked PCBs: a functional PCB, a core PCB, and a main PCB. From bottom to top, these layers are a functional PCB, a core PCB, and a main PCB. Each of the functional, core, and main PCBs has several connectors on the same side. The core and main PCBs each have a corresponding shielding cover that covers the connectors, with an open notch on the exposed side of the connector. The main unit housing includes a top cover, a bottom cover, and side panels. The side panels have pre-punched holes corresponding to the connectors on the three PCBs. During installation, the three PCBs are first assembled with their respective shielding covers, then screwed onto the bottom cover, followed by the top cover, and finally the side panels are installed laterally. In this device, the corresponding shielding covers on the three PCBs provide shielding. The top cover, bottom cover, and side panels are metal stampings that, when installed, form a relatively closed hexahedral structure, also providing overall shielding.

[0003] Its shortcomings are:

[0004] 1. During the production process, because the screw fastening is done vertically using a screw-locking machine, when installing the side cover, the main unit needs to be manually rotated 90° and repositioned before the side cover screws can be vertically tightened. The drawbacks of this assembly and fixing method are: it not only adds an extra side cover structural component that needs to be installed, but also requires additional manual labor to rotate the main unit to align the side cover and screw in the correct direction; the structural components are complex and the assembly process is cumbersome, resulting in high labor costs, difficulty in automating production lines, low assembly efficiency, and ultimately, high product production costs.

[0005] 2. To achieve a good shielding effect, the holes on the side panels need to correspond one-to-one with different sets of connectors, especially since the core PCB and main PCB have multiple sets of connectors. The side panels have numerous corresponding holes, and insulating ribs are left between adjacent holes to separate the gaps, ensuring shielding between adjacent connectors. However, there are assembly errors during the stacking of the three-layer PCB and during the installation of the side panels. The cumulative effect of these errors can cause interference between the holes on the side panels and external connectors after installation, making it difficult to connect connectors to terminals. Larger holes result in larger gaps, reducing the shielding effect; smaller or misaligned holes can prevent successful installation of the side panels, increasing manufacturing difficulty. Utility Model Content

[0006] The purpose of this utility model is to provide a shielding cover structure that can enclose the exterior of the host, thereby solving the above two technical problems in the prior art, realizing convenient automated assembly of the vehicle-mounted three-layer PCB host, with a simple and compact structure, while achieving a good shielding effect.

[0007] Therefore, the technical solution of this utility model is as follows: A shielding cover structure that can seal the exterior of a host computer includes an upper cover and a lower cover. Three PCB boards are stacked inside the lower cover. The three PCB boards, from bottom to top, are a functional PCB board, a core PCB board, and a main PCB board. Several plug-in terminals are provided on the same side of the functional PCB board, the core PCB board, and the main PCB board. A core board shielding cover is connected to the core PCB board, and a motherboard shielding cover is provided on the main PCB board. The lower cover is a five-sided stamped part, and the upper cover is installed on its sixth side. A partial gap is provided on one side of the five-sided part, and the gap matches the shape of the wiring terminal side of the three-layer PCB board. The core board shielding cover and the motherboard shielding cover have bent ends on their outward sides, and the bent ends cover the gap area between the plug-in terminals.

[0008] The improvement of this device lies in eliminating the separately installed side panel. A portion of the side panel is integrally molded with the lower cover through optimized design, avoiding the need for a 90° flip for reinstallation. This simplifies installation, especially for automated production lines, and improves production efficiency. Furthermore, by shielding the gap between the plug-in terminals with the bent end, better shielding is achieved between the inner and outer areas of the lower cover. Compared with existing technologies, the advantages of this invention are: it facilitates automated assembly of the vehicle-mounted three-layer PCB main unit, simplifies the structure, making it simple and compact, while achieving excellent shielding performance. It is suitable for vehicle-mounted three-layer PCB main units.

[0009] Furthermore, the core board shield is located between the functional PCB board and the core PCB board, and the motherboard shield is located between the core PCB board and the main PCB board.

[0010] Furthermore, the core board shielding cover is fixed to the core PCB board via longitudinally arranged screws. The motherboard shielding cover is fixed to the main PCB board via longitudinally arranged screws. The connecting screws between the upper and lower covers, and the connecting screws fixing the three PCB boards, are all longitudinally arranged. All of the above structures ensure that the device can be assembled quickly, enabling rapid automated assembly on the production line. They standardize the screw fastening direction of all parts, ensuring consistency in part assembly direction and production stability, providing factories with a simpler and more efficient product design solution.

[0011] Furthermore, the motherboard shield is installed on the underside of the main PCB board. The bent end of the motherboard shield has a positioning flange and a tongue, and the main PCB board has corresponding positioning holes. When the motherboard shield is installed on the underside of the main PCB board, the positioning flange abuts against the main PCB board, and the tongue is inserted into the positioning hole. This structure allows the motherboard shield to be securely installed and fixed to the main PCB board.

[0012] Furthermore, the core board shield is fixed to the underside of the core PCB board. The bent end of the core board shield abuts against the core PCB board. This structure allows the core board shield to be securely installed on the core PCB board.

[0013] Furthermore, the core board shield and the motherboard shield are metal stamping parts. Attached Figure Description

[0014] Figure 1 This is an assembly diagram of a three-layer PCB main unit structure.

[0015] Figure 2 This is an exploded view of the three-layer PCB main unit structure.

[0016] Figure 3 This is an exploded view of the three-dimensional structure of the motherboard shielding cover and the main PCB board.

[0017] Figure 4 This is an exploded view of the three-dimensional structure of the core board shielding cover and the core PCB board.

[0018] Figure 5 This is an exploded view of the functional PCB board and the bottom cover's 3D structure.

[0019] In the diagram, 1 is the lower cover, 1-1 is the empty space, 2 is the upper cover, 3 is the main PCB board, 3-1 is the socket, 3-2 is the motherboard connector terminal, 4 is the motherboard shield, 4-1 is the bent end of the motherboard shield, 4-2 is the positioning fold, 4-3 is the tongue, 5 is the core PCB board, 5-1 is the core board connector terminal, 6 is the core board shield, 6-1 is the bent end of the core board shield, 7 is the functional PCB board, 7-1 is the functional board connector terminal, and 8 is the connecting screw. Detailed Implementation

[0020] As shown in the figure, a shielding structure that can enclose the exterior of a host computer includes an upper cover 2 and a lower cover 1. Three PCB boards are stacked inside the lower cover 1. From bottom to top, the three PCB boards are a functional PCB board 7, a core PCB board 5, and a main PCB board 3. Several plug-in terminals are provided on the same side of the functional PCB board 7, the core PCB board 5, and the main PCB board 3, namely, functional board plug-in terminal 7-1, core board plug-in terminal 5-1, and motherboard plug-in terminal 3-2. A core board shielding cover 6 is connected to the core PCB board 5, and a motherboard shielding cover 4 is provided on the main PCB board 3. The core board shielding cover 6 is located between the functional PCB board 7 and the core PCB board 5, and the motherboard shielding cover 4 is located between the core PCB board 5 and the main PCB board 3.

[0021] The lower cover 1 is a five-sided stamped part, that is, a hollow body with five faces formed by stamping metal sheet; the upper cover 2 is installed on its sixth face to form a hexahedron. One side of the five-sided pentahedron has a partial gap 1-1, which matches the shape of the wiring terminal side of the three-layer PCB board; the core board shielding cover 6 has a core board shielding cover bending end 6-1 on the outward side, which covers the gap area between the core board plug-in terminals 5-1; the motherboard shielding cover 4 has a motherboard shielding cover bending end 4-1 on the outward side, which covers the gap area between the motherboard plug-in terminals 3-2.

[0022] The core board shielding cover 6 is connected and fixed to the core PCB board 5 by longitudinally arranged screws 8. The motherboard shielding cover 4 is fixed to the main PCB board 3 by longitudinally arranged connecting screws 8. The connecting screws 8 between the upper cover 2 and the lower cover 1, and the connecting screws 8 that fix the three layers of PCB boards are all longitudinally arranged.

[0023] The motherboard shield 4 is installed on the underside of the main PCB board 3. The bent end 4-1 of the motherboard shield has a positioning flange 4-2 and a tongue 4-3. The main PCB board 3 has a corresponding positioning hole 3-1. When the motherboard shield 4 is installed on the underside of the main PCB board 3, the positioning flange 4-2 abuts against the main PCB board 3, and the tongue 4-3 is inserted into the positioning hole 3-1. This structure allows the motherboard shield 4 to be securely installed and fixed to the main PCB board 3.

[0024] The core board shield 6 is fixed to the underside of the core PCB board 5. The bent end 6-1 of the core board shield 6 abuts against the core PCB board 5. This structure allows the core board shield 6 to be securely installed on the core PCB board 5.

[0025] The top cover 2, the bottom cover 1, the core board shielding cover 6, and the motherboard shielding cover 4 are all metal stamping parts.

[0026] The above-described structure ensures rapid assembly of the device, enabling automated assembly on the production line. It standardizes the screw fastening direction of all parts, guaranteeing consistency in assembly orientation and production stability, and providing factories with a simpler and more efficient product design solution. Simultaneously, it provides excellent shielding.

[0027] This utility model is not limited to the above embodiments. Based on the technical solutions disclosed in this utility model, those skilled in the art can make some substitutions and modifications to some of the technical features without creative labor, and these substitutions and modifications are all within the protection scope of this utility model.

Claims

1. A shielding cover structure capable of sealing the exterior of a host computer, comprising an upper cover and a lower cover, wherein three PCB boards are stacked vertically inside the lower cover, the three PCB boards being, from bottom to top, a functional PCB board, a core PCB board, and a main PCB board, wherein the functional PCB board, the core PCB board, and the main PCB board have a plurality of plug-in terminals on the same edge, a core board shielding cover is connected to the core PCB board, and a motherboard shielding cover is provided on the main PCB board, characterized in that: The lower cover is a five-sided stamped part, and the upper cover is installed on its sixth side. A partial gap is provided on one side of the five-sided part, and the gap matches the shape of the wiring terminal side of the three-layer PCB board. The core board shield and the motherboard shield have a bent end on the outward side, and the bent end covers the gap area between the plug-in terminals.

2. A shield structure for enclosing a host surface according to claim 1, wherein: The core board shielding cover is located between the functional PCB board and the core PCB board, and the motherboard shielding cover is located between the core PCB board and the main PCB board.

3. A shield structure for enclosing a host surface according to claim 2, wherein: The core board shielding cover is fixed to the core PCB board by longitudinally arranged screws.

4. The shield structure of claim 2, wherein: The motherboard shield is fixed to the main PCB board by longitudinally arranged screws.

5. A shield structure for enclosing a host surface according to any one of claims 1-4, characterized in that: The connecting screws between the upper and lower covers, as well as the connecting screws that fix the three-layer PCB board, are all arranged longitudinally.

6. A shielding cover structure capable of enclosing the exterior surface of a host computer according to any one of claims 1-4, characterized in that: The motherboard shield is installed on the underside of the main PCB board.

7. A shield structure for enclosing a host surface according to claim 6, wherein: The motherboard shield has a positioning fold and a tongue at the bent end, and a corresponding positioning hole is provided on the main PCB. When the motherboard shield is installed on the underside of the main PCB, the positioning fold abuts against the main PCB, and the tongue is inserted into the positioning hole.

8. A shield structure for enclosing a host surface according to any one of claims 1-4, wherein: The core board shielding cover is fixed to the underside of the core PCB board.

9. A shield structure for enclosing a host surface according to claim 8, wherein: The bent end of the core board shielding cover abuts against the core PCB board.

10. A shield structure for enclosing a host surface according to any one of claims 1-4, wherein: The core board shielding cover and the motherboard shielding cover are metal stamping parts.

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