Shielding piece with counterbore

Abstract

A shielding piece with a counterbore comprises a covering top surface and a side edge which is formed by bending and extending downwards from the periphery of the covering top surface, and the covering top surface is stretched downwards to form the counterbore. The counterbore comprises a stretching inclined wall which is formed by downward inclined stretching from the covering top surface and a bonding pad which is formed by flattening and extending from the bottom end of the stretching inclined wall. The shielding piece can achieve the purposes of avoiding an object and ensuring the shielding performance without independently arranging a supporting column, and the manufacturing cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the field of electromagnetic shielding, in particular to a shielding component with a countersunk hole. Background Art

[0002] Electromagnetic shielding is used to shield certain electronic components in electronic equipment to prevent the electronic components from interfering with other external devices or to protect the electronic components from external electromagnetic interference.

[0003] Because electronic components such as chips that need to be shielded will occupy most of the area of ​​the printed circuit board, the shielding part also needs to shield most of the area of ​​the printed circuit board. However, in the layout of the printed circuit board, some structural parts or components need to be fixed by screws, and the screw heads are bound to occupy a certain space. Sometimes some fixing screws need to go deep into the shielding part. At this time, it is necessary to open a hole on the top of the shielding part to avoid the fixing screws. However, the opening of the shielding part will reduce the shielding performance. The patent application No. 202221236531.7 of the People's Republic of China discloses a structure in which a countersunk hole is set to avoid it. However, the actual technical effect described in the patent is support. However, in addition to the supporting function, the structure will also be used to solve the above technical problems, that is, to avoid the screw head or accommodate the screw to fix the shielding part on the printed circuit board, or to fix the device on the other side of the printed circuit board by passing the screw through the printed circuit board. However, the structure of the countersunk hole is a split structure. After opening a hole at the top of the shielding part, a countersunk hole-shaped pillar is independently designed, and the top of the pillar is welded and fixed to the edge of the opening, which increases the manufacturing cost. Utility Model Content

[0004] In view of this, it is necessary to provide a shielding component with a countersunk hole at a lower cost.

[0005] In order to solve the above technical problems, the present application provides a shielding component with a countersunk hole, including a covering top surface and a side edge formed by bending downward from the periphery of the covering top surface, the covering top surface is stretched downward to form a countersunk hole, and the countersunk hole includes a stretched inclined wall formed by obliquely stretching downward from the covering top surface and a soldering pad formed by flattening and extending from the bottom end of the stretched inclined wall.

[0006] Preferably, the side end edge is folded outward to form a flange, and the bottom surface of the soldering pad is flush with the bottom surface of the flange and is soldered to the printed circuit board.

[0007] Preferably, a through hole is formed through the middle of the pad, and the countersunk hole is located above the pad to form a settlement space.

[0008] Preferably, the settlement space is used to accommodate a screw head protruding into the shielding member.

[0009] Preferably, a screw is installed in the settlement space and fixed on the printed circuit board, and the screw head is accommodated in the settlement space.

[0010] Preferably, the stretching inclined wall is stretched with a relatively large slope. Specifically, the angle between the stretching inclined wall and the horizontal plane is less than 35 degrees.

[0011] Preferably, the angle between the stretching inclined wall and the horizontal plane is between 20-30 degrees.

[0012] Preferably, the shielding member is formed by stamping an aluminum alloy plate, and before the stamping, a nickel plating layer is formed on the surface of the aluminum alloy plate by electroplating.

[0013] Preferably, the flange formed by bending the side edge makes the side surface of the side portion face downward as a welding surface, so that the welding surface has a nickel plating layer.

[0014] The countersunk hole of the shielding part of the present application is integrally stretched and formed on the top surface of the cover, eliminating the need for separate stamping of the pillars in the prior art, while reducing the welding process and greatly reducing the manufacturing cost, thereby achieving the purpose of avoiding objects without the need for separate pillars and ensuring shielding performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0016] Figure 1 A three-dimensional diagram of a shielding member with a countersunk hole in the present application;

[0017] Figure 2 A three-dimensional view of the shielding member with a countersunk hole of the present application from another angle;

[0018] Figure 3 For along Figure 1 A cross-sectional view taken along the dashed line AA is shown.

[0019] Description of Reference Numerals

[0020] Shielding part-10; covering top surface-11; side edge-12; flange-13; countersunk hole-14; stretched inclined wall-141; pad-142; through hole-143; opening-15. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0022] See also Figures 1 to 3 As shown, the shielding component 10 with countersunk holes in the present application includes a covering top surface 11, a side edge 12 formed by bending downward and extending from the periphery of the covering top surface 11, a flange 13 formed by folding outward from the end edge of the side edge 12, and a countersunk hole 14 formed on the covering top surface 11 by a stretching process.

[0023] The countersunk hole 14 includes a stretched inclined wall 141 stretched downward from the covering top surface, a soldering pad 142 extended inwardly and parallelly from the lower edge of the stretched inclined wall 141 , and a through hole 143 penetrating the center of the soldering pad 142 .

[0024] The inclination of the stretching inclined wall 141 is relatively large to avoid breaking or tearing during stretching. The angle between the stretching inclined wall 141 and the horizontal plane is less than 35 degrees, preferably between 20-30 degrees. The bottom surface of the pad 142 is smooth and flush with the bottom surface of the flange 13 of the side 12 so as to be soldered on a printed circuit board. The through hole 143 is opened at the center of the pad 142.

[0025] The cover top surface 11 is provided with a plurality of openings 15 for ventilation.

[0026] In one embodiment, the shielding component of the present application is made of aluminum alloy material. The aluminum alloy sheet needs to be electroplated with nickel first to form a nickel coating on the surface of the metal sheet. Then, the aluminum alloy sheet is stamped to form the shielding component 10 of the present application.

[0027] The cut fracture surface formed after stamping of the aluminum alloy plate no longer has the nickel coating. If the fracture surface is used as a welding surface, the welding will be unstable due to the oxide layer on the surface of the aluminum alloy when soldering. The flange 13 formed at the bottom of the side edge 12 makes the fracture surface no longer a welding surface, but the surface with the nickel coating is used as the welding surface.

[0028] The countersunk hole 14 forms a sinking space, which can be used to accommodate the screw head protruding at this position, avoiding opening a window on the cover top surface 11. In one embodiment, the printed circuit board is also provided with a through hole corresponding to the countersunk hole 14, and a screw is passed through the countersunk hole to fix it with the through hole on the printed circuit board, or used to fix a device located on the other side of the printed circuit board.

[0029] The pad 142 of the countersunk hole 14 is fitted and supported on the printed circuit board, and can also support the shielding component 10 with a larger area, thereby avoiding the problem that the shielding component 10 has a large area but lacks support in some positions and is prone to deformation.

[0030] The countersunk hole 14 of the shielding member 10 of the present application is integrally formed by stretching on the covering top surface 11, eliminating the need for separate stamping of the pillars in the prior art, while reducing the welding process and greatly reducing the manufacturing cost, thereby achieving the purpose of avoiding objects and ensuring shielding performance without the need for separate pillars.

[0031] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0032] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A shielding member with a countersunk hole, comprising a covering top surface and a side edge formed by bending downward and extending from the periphery of the covering top surface, characterized in that: The top surface of the cover is stretched downward to form a countersunk hole, and the countersunk hole includes a stretched inclined wall formed by obliquely stretching downward from the top surface of the cover and a welding pad formed by flattening and extending from the bottom end of the stretched inclined wall.

2. The shielding member with a countersunk hole according to claim 1, characterized in that: The side edge is folded outward to form a flange, and the bottom surface of the pad is flush with the bottom surface of the flange and is welded on the printed circuit board.

3. The shielding member with countersunk holes according to claim 2, characterized in that: A through hole is formed through the middle of the pad, and the countersunk hole is located above the pad to form a settlement space.

4. The shielding member with countersunk holes according to claim 3, characterized in that: The settlement space is used to accommodate the screw head protruding into the shielding member.

5. The shielding member with countersunk holes according to claim 3, characterized in that: A screw is installed in the settlement space and fixed on the printed circuit board, and the screw head is accommodated in the settlement space.

6. The shielding member with countersunk holes according to claim 2, characterized in that: The angle between the stretching inclined wall and the horizontal plane is less than 35 degrees.

7. The shielding member with countersunk holes according to claim 6, characterized in that: Preferably, the angle between the stretching inclined wall and the horizontal plane is between 20-30 degrees.

8. The shielding member with countersunk holes according to claim 2, characterized in that: The shielding component is made by stamping an aluminum alloy plate, and a nickel plating layer is formed on the surface of the aluminum alloy plate by electroplating.

9. The shielding member with countersunk holes according to claim 8, characterized in that: The flange formed by bending the end edge of the side makes the side surface of the side portion face downward as a welding surface, so that the welding surface has a nickel plating layer.

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