TW201601612A - Electronic device with protection shield - Google Patents

Abstract

An electronic device includes a circuit board and a protection shield secured to the circuit board. The protection shield includes a hook. The circuit board defines a through slot. The hook is engaged in the through slot and abuts an inner surface of the through slot. The hook is electronically connected to a grounded wire in the circuit board, so that the protection shield is grounded connected with the circuit board to electromagnetic shield components on the circuit board.

Description

Electronic device with protective cover

The present invention relates to an electronic device, and more particularly to an electronic device with a protective cover.

In today's electronic devices, the shielding of components on the board becomes more and more important, especially when the signal speed approaches the megabit level. It is well known that the radiation of certain high frequency components can interfere with communications, such as telecommunications. This phenomenon is known as Radio Frequency Interference (RFI). A protective cover can be used to shield the circuit that generates interference or the protective cover can be used to shield sensitive components from interference. Usually, the sealed box is provided with a flange at the bottom, and the flange is welded to the grounding pad provided on the circuit board. This method is not only cumbersome, but also occupies space on the circuit board, and the grounding solder joint on the circuit board is easily scratched or peeled off during the installation of other components, thereby affecting the ground connection of the shield and the circuit board to cause shielding. Invalid.

In view of the above, it is necessary to provide an electronic device with a simple, effective and space-saving protective cover.

An electronic device includes a circuit board and a protective cover fixed on the circuit board, the protective cover includes a hook, the circuit board is provided with a through slot, and the hook is buckled in the through slot The hook is electrically connected to the grounding wire disposed in the through slot, so that the shield is grounded to the circuit board to electromagnetically shield the electronic components on the circuit board.

Compared with the prior art, in the above electronic device, the hook is buckled in the through slot and abuts against the inner wall of the through slot, not only fixing the shield to the circuit The board can also be electrically connected to the grounding wire disposed on the inner wall of the through slot, so that the shield is grounded to the circuit board to electromagnetically shield the electronic components on the circuit board. In addition, the hooks that are snapped into the through slots do not occupy the space on the circuit board, which improves the utilization of the circuit board.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective assembled view of a preferred embodiment of an electronic device with a shield of the present invention.

Figure 2 is an exploded perspective view of Figure 1, but with a housing showing only portions.

Figure 3 is a perspective view of one of the shields of Figure 1.

4 is an assembled, isometric view of the shield and a circuit board of one of FIG. 1.

Referring to FIG. 1 and FIG. 2, in an embodiment of the present invention, an electronic device includes a housing 10, a circuit board 20 mounted in the housing 10, and a protective cover 30. In one embodiment, the electronic device is a health machine for measuring various indicators of the human body and recording them in the system.

Referring to FIG. 2 , a plurality of electronic components 21 are mounted on the circuit board 20 , and a plurality of through slots 23 and a stop hole 25 are defined in the periphery of the electronic component 21 . The circuit board 20 is provided with a grounding conductor (not shown) on the inner wall of each of the through slots 23. In one embodiment, the plurality of through grooves 23 and the stop holes 25 are surrounded by a rectangle.

Referring to FIG. 2 and FIG. 3 , the protective cover 30 includes a cover 31 , two opposite first side plates 33 , and two opposite second side plates 35 . The cover plate 31 is substantially a square plate. The first side plate 33 and the second side plate 35 respectively extend from the four edges of the cover plate 31. The two first side plates 33 are parallel to each other and substantially perpendicular to the cover plate 31. The two second side plates 35 are parallel to each other and substantially perpendicular to the cover plate 31 and the first side plate 33.

A first flange 331 and two hooks 335 extend substantially perpendicularly from a bottom edge of each of the first side panels 33, and the first flanges 331 are substantially parallel to the cover plate 31. Each of the hooks 335 is in the same plane as the corresponding first side plate 33, and each of the hooks 335 defines a slot 3351. The first flange 331 is located between the two hooks 335. In one embodiment, the extending direction of the hook 335 is substantially perpendicular to the extending direction of the first flange 331, and each of the hooks 335 is substantially "L" shaped. In other embodiments, the hook 335 has a U-shaped cross section, and the hook 335 has a width substantially equal to the width of the through slot 23.

A second flange 351 and two elastic pieces 355 extend substantially perpendicularly from the bottom edge of each of the second side plates 35, and the second flange 351 is substantially parallel to the cover plate 31. The second flange 351 is located between the two elastic pieces 355. In one embodiment, the elastic piece 355 is substantially "V" shaped.

Referring to FIG. 4, during installation, the shield 30 is moved over the circuit board 20 such that the hook 335 is aligned with the through slot 23, and the elastic piece 355 is aligned with the stop hole 25. The shield 30 is moved toward the circuit board 20 until the first flange 331 and the second flange 351 abut against the upper surface of the circuit board 20. The shield 30 is moved in parallel so that the edge of the through slot 23 of the circuit board 20 is caught in the slot 3351 of the hook 335. The elastic piece 355 is received in the stopping hole 25 and presses against the inner wall of the stopping hole 25 to prevent the protective cover 30 from coming off the circuit board 20. The shield 30 is fixed to the circuit board 20 to shield the electronic component 21. The hook 335 abuts against an inner wall of the through slot 23 and is electrically connected to the grounding conductor. Thus, the shield 30 is electrically connected to the circuit board 20 to electromagnetically shield the electronic component 21.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

10‧‧‧shell

20‧‧‧ boards

21‧‧‧Electronic components

23‧‧‧through slot

25‧‧‧ stop hole

30‧‧‧ protective cover

31‧‧‧ Cover

33‧‧‧First side panel

331‧‧‧First Folding

335‧‧‧ hook

3351‧‧‧ card slot

35‧‧‧ second side panel

351‧‧‧second hem

355‧‧‧Shrap

no

20‧‧‧ boards

30‧‧‧ protective cover

33‧‧‧First side panel

335‧‧‧ hook

35‧‧‧ second side panel

Claims (10)

An electronic device includes a circuit board and a protective cover fixed on the circuit board, the protective cover includes a hook, the circuit board is provided with a through slot, and the hook is buckled in the through slot The hook is electrically connected to the grounding wire disposed in the through slot, so that the shield is grounded to the circuit board to electromagnetically shield the electronic components on the circuit board. The electronic device of claim 1, wherein the hook is provided with a card slot, and an edge of the slot is engaged in the card slot. The electronic device of claim 1, wherein the hook is substantially "L" shaped. The electronic device of claim 1, wherein the circuit board is provided with a stop hole, and the protective cover comprises a spring piece, and the elastic piece is elastically buckled in the stop hole. The electronic device of claim 4, wherein the protective cover further comprises a first side plate and a second side plate substantially perpendicular to the first side plate, the hook extending from the first side plate, The shrapnel extends from the second side panel. The electronic device of claim 5, wherein the protective cover further comprises a flange extending from the first side plate, the flange abutting against an upper surface of the circuit board. The electronic device of claim 6, wherein the extending direction of the hem is substantially perpendicular to an extending direction of the hook. The electronic device of claim 6, wherein the hem is substantially perpendicular to the first side panel. The electronic device of claim 5, wherein the hook is located on the same plane as the first side plate. The electronic device of claim 1, wherein the elastic piece is substantially "V" shaped.