TWI407899B - Shielding can structure - Google Patents

Abstract

The invention discloses a shielding can structure. The shielding can structure includes a frame and a cover body. The frame includes several side walls and a top flange connecting with the side walls. Each side wall defines at least one locking bore. The at least one locking bore extends to the flange. The flange forms a stretch extending there from and inserting into the locking bore. The cover body includes a top plate and side edge relative to the top plate. The side edge forms some warps and some holes. Each hole extends to one warp and the top plate. The cover body cover the frame, the warps insert into the locking bores, and the stretch is clamped in the hole.

Description

Shield structure

The present invention relates to a shield structure.

Circuit boards, wires and electronic components in electronic equipment emit high-frequency electromagnetic waves during operation, which cause interference to the normal operation of electronic products, and electromagnetic waves radiate to the outside, posing harm to the human body. In order to reduce the interference and radiation of electromagnetic waves, in the prior art, a shield cover device is often used to cover circuit boards, wires and electronic components, thereby achieving the purpose of shielding electromagnetic waves.

Referring to FIG. 1 , a conventional shield structure 50 includes a frame 52 and a cover 54 . The frame 52 is disposed on a circuit board 60. A plurality of bumps 522 are formed on the peripheral wall of the frame 52. The cover body 54 is bent with a flange 542 that cooperates with a peripheral wall of the frame 52. A plurality of engaging pieces 5422 corresponding to the bumps 522 are formed on the flange 542. When the cover 54 is mounted on the frame 52, the engaging piece 5422 is engaged with the protrusion 522 such that the cover 54 is mounted on the frame 52.

However, the shield structure 50 is engaged with the bump 522 by the engaging piece 5422, and the stability of the cover 54 mounted on the frame 52 is not strong. The engaging position of the bump 522 and the engaging piece 5422 is not too close to the top end of the shield structure 50 to prevent the buckle from being unstable. Therefore, the shield structure is also disadvantageous for the thickness reduction of the entire shield structure.

In view of the above, it is necessary to provide a shield structure in which the cover body and the frame are stably buckled and the overall thickness is reduced.

A shield structure includes a frame and a cover, the frame includes a sidewall and a top edge integrally connected to the sidewall, the sidewall is provided with a snap hole, and the snap hole extends to the top edge, The top edge extends an extension portion of the hole wall of the buckle hole, the cover body includes a top plate and a folded edge opposite to the top plate, and the flange is formed with a convex package and a matching hole, and the matching The hole extends to the convex hull and the top plate, the cover body covers the frame, the convex hull cooperates with the snap hole, and the extension portion is clamped in the matching hole, The mating hole extends to the convex hull to form a mating surface on the convex hull for engaging the extension.

Compared with the prior art, the side wall of the frame of the shield structure has a locking hole at an adjacent top edge, and the top edge extends an extension on the hole wall of the buckle hole, and the cover body a convex hull and a matching hole are formed on the folded edge, the matching hole extends to the top plate, the convex hull cooperates with the snap hole, and the extending portion is clamped in the matching hole, so that the cover can be The body is firmly assembled on the frame and can greatly reduce the thickness of the entire shield structure.

Conventional technology

50‧‧‧Shield structure

52‧‧‧Frame

522‧‧‧Bumps

54‧‧‧ cover

542‧‧‧Folding

5422‧‧‧Clocks

60‧‧‧ boards

this invention

100‧‧‧Shield structure

10‧‧‧Frame

12‧‧‧ side wall

122‧‧‧Snap holes

14‧‧‧Top edge

142‧‧‧ hole wall

144‧‧‧Extension

20‧‧‧ cover

22‧‧‧ top board

24‧‧‧Folding

242‧‧‧ convex hull

244‧‧‧With holes

246‧‧‧Materials

248‧‧‧ holding piece

1 is a schematic perspective view of a shield structure of a prior art; FIG. 2 is an exploded perspective view of a shield structure according to a preferred embodiment of the present invention; and FIG. 3 is an assembled view of a shield structure of a preferred embodiment of the present invention.

Referring to FIG. 2, a preferred embodiment of the present invention provides a shield structure 100. The shield structure 100 includes a frame 10 and a cover 20.

The frame 10 has a rectangular frame structure that can be fixed (eg, soldered) to a circuit board (not shown) to receive electronic components (not shown) to be shielded therein. The frame 10 is stamped from a sheet of metal and includes two side walls 12 and two opposite top edges 14 joined to the two side walls 12. A plurality of latching holes 122 are defined in the sidewall 12, and each of the latching holes 122 extends to the top edge 14 and A hole wall 142 and an extension 144 formed on the hole wall 142 are formed in the top edge 14. The extending portion 144 is formed by punching the top edge 14 on one side of the side wall 12 and has a certain elasticity. In this embodiment, the outer edge of the extending portion 144 is wavy.

The cover 20 is used for covering the frame 10. The cover 20 includes a top plate 22 and a flange 24 formed around the top plate 22. The flange 24 is formed with a plurality of matching holes 244 of a plurality of convex hulls 242 and corresponding convex hulls 242. The plurality of convex hulls 242 are configured to cooperate with the locking holes 122 of the frame 10, and each of the convex hulls 242 is formed by being stamped and recessed, that is, the outer side of the folded edge 24 is concave and folded. The side of the side 24 is convex. Each of the mating holes 244 is configured to engage with the extending portion 144 of the frame 10 . The mating hole 244 extends to the convex hull 242 to form a mating surface 246 . The mating face 246 is parallel to the top panel 22 and the mating face 246 is spaced from the top panel 22 by a thickness corresponding to the thickness of the top edge 14 of the frame 10. The other side of the mating hole 244 extends to the top plate 22 to form a rectangular notch on the top plate 22. The depth of the notch is equivalent to the extension of the extension 144 of the frame 10. A plurality of clamping pieces 248 are formed on the flange 24, and the clamping piece 248 is formed by punching and is slightly inclined toward the inner side of the folding edge 24 for abutting against the side wall 12 of the frame 10. The auxiliary cover 20 is stably housed on the frame 10.

Referring to FIG. 3, when the cover body 20 is assembled to the frame 10, the cover body 20 is first placed on the frame 10, and then the cover body 20 is pressed under the action of an external force, and the cover body 20 is convex. The bag 242 firstly resists the extending portion 144 of the frame 10, the extending portion 144 has a certain elasticity, and the convex hull 242 bends the extending portion 144 and fits into the locking hole 122 beyond the extending portion 144. The extending portion 144 is restored to the original state, and the extending portion 144 is sleeved into the fitting hole 244. The upper surface of the extending portion 144 abuts against the top plate 22 of the cover body 20, and the lower surface of the extending portion 144 The mating surface 246 of the convex hull 242 is resisted. The clamping piece 248 of the cover 20 abuts against the side wall 12 of the frame 10. The assembly of the shield structure 100 is completed.

Soldering the frame 10 of the shield structure 100 to a circuit board (not shown) of the electronic device, The electronic component to be shielded (not shown) is housed under the shield structure 100 to achieve a shield for the electronic component.

A latching hole 122 is defined in the sidewall 12 of the frame 10 of the shield structure 100. The latching hole 122 extends to the top edge 14 and forms the extending portion 144 on the hole wall of the top edge 14. A convex hull 242 and a corresponding matching hole 244 are formed on the folded edge 24 of the body 20, and the matching hole 244 extends to the top plate 22. The cover body 20 is assembled to the frame 10, and the convex hull 242 is nested. The extending portion 144 is clamped in the engaging hole 244, so that the cover 20 is firmly assembled on the frame 10, and the locking hole 122 is opened adjacent to the top edge 14. The thickness of the mating hole 244 is comparable to the thickness of the extension, which greatly reduces the thickness of the entire shield structure 100.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and equivalent modifications or variations made by those skilled in the art in light of the spirit of the present invention are It should be covered by the following patent application.

100‧‧‧Shield structure

10‧‧‧Frame

12‧‧‧ side wall

122‧‧‧Snap holes

14‧‧‧Top edge

142‧‧‧ hole wall

144‧‧‧Extension

20‧‧‧ cover

22‧‧‧ top board

24‧‧‧Folding

242‧‧‧ convex hull

244‧‧‧With holes

246‧‧‧Materials

248‧‧‧ holding piece

Claims (5)

A shield cover structure comprising a frame and a cover, wherein the frame comprises a side wall and a top edge integrally connected with the side wall, the side wall is provided with a snap hole, and the buckle hole extends to the Forming a top edge and forming an extension on the wall of the top edge, the cover body includes a top plate and a flange formed around the top plate, and the flange is formed with a convex package and a matching hole, the matching hole Extending to the convex hull and the top plate, the cover body is disposed on the frame, the convex hull is engaged with the snap hole, and the extending portion is clamped in the matching hole, The mating hole extends to the convex hull to form a mating surface on the convex hull for engaging the extension. The shield structure according to claim 1, wherein the convex hull is formed by punching the hem. The shield structure according to claim 1, wherein the flange of the cover body is further formed with a plurality of clamping pieces for abutting against the side walls of the frame. The shield structure according to claim 1, wherein the extension portion is formed by punching one side of the top edge and has elasticity. The shield structure of claim 1, wherein the outer edge of the extension is wavy.