KR200443632Y1 - Electromagnetic shield - Google Patents

Abstract

Electromagnetic shielding devices disposed within electronic devices prevent electrical components within the electronic device from being interfered by electromagnetic waves. The electromagnetic shield includes at least one positioning and lining wall mounted over the laminate member as part of a housing of the electronic device or a center plate in the electronic device. By means of the positioning and lining walls, the electromagnetic shielding mask is conveniently mounted in the electronic device to cover the electronic component.

Electronics, electromagnetic shielding, electrical components, positioning and lining walls, center plates

Description

Electromagnetic shielding device

1 is a schematic diagram of an electromagnetic shielding mask installed on a prior art housing.

2 is a schematic side view of an electromagnetic shielding device of the present invention.

3 is a schematic plan view of a first best embodiment of the positioning and lining wall of the present invention;

4 is a schematic plan view of a second best embodiment of the positioning and lining wall of the present invention;

5 is a schematic cross-sectional view of another best embodiment of the laminate member of the present invention.

6 is a schematic view of a positioning and lining wall made of the metal of the present invention.

7 is a schematic view of a positioning and lining wall made of the plastic of the present invention.

* Description of the symbols for the main parts of the drawings *

30: electronic device 40: electromagnetic shielding device

42: electrical component 44: PCB

46 housing 50 positioning and lining wall 52 electromagnetic shielding mask

The present invention relates generally to electromagnetic shielding devices, and more particularly to electromagnetic shielding devices employing a laminate member and four positioning and lining walls to allow the electromagnetic shielding mask to easily and accurately cover electrical components within the electronic device. It is about.

In mobile phones, PDAs, laptops and the like, electromagnetic components such as CUPs, chips, etc. of PCBs are avoided from being interfered by external electromagnetic interference (EMI), so that components can operate properly. On the other hand, EMI leaking from some powered electrical components must be shielded so as not to interfere with other external electronic devices and organisms.

The electromagnetic shielding mask of the prior arts is mounted on a PCB and covers the electromagnetic component. Such an electromagnetic mask is mounted on a PCB by welding, fastening, or the like to shield EMI.

However, if a welding method such as SMT is adopted, the materials to be welded and applied are limited. Moreover, the above processes are complicated and the material cost is relatively high. On the other hand, electromagnetic shielding masks are not easily disassembled during maintenance.

On the other hand, another conventional technique is to provide an electromagnetic shielding mask on the housing or the center plate of the electronic device. Reference is made to FIG. 1, which shows a schematic view of an electromagnetic shielding mask 2 installed on a housing 4 in the prior art. In the prior art, a plurality of holes 6 are formed on the bottom plate of the electromagnetic shielding mask 2 in the electronic device 20, the bottom plate forming a hot melt adhesive and a plurality of holes 6. Through the inner surface of the housing 4.

However, the electromagnetic shielding mask 2 is not satisfactorily fixed while adhering the electromagnetic shielding mask 2 to the housing 4. Since some movement arbitrarily occurs, the electromagnetic shielding mask 2 cannot precisely cover the electrical component 12 of the PCB 10 during the installation of the housing 4 and the installation is not completed satisfactorily.

Therefore, how to provide an improved structure for the housing and the electromagnetic shielding mask to be installed simply and effectively is an important issue for those skilled in the art.

It is a primary object of the present invention to provide an electromagnetic shield device employing a housing or center plate and at least one positioning and lining wall to enable the electromagnetic shielding mask to easily and precisely cover the electrical components in the electronic device. As a result, the assembly accuracy is improved and the probability of error is reduced.

It is a second object of the present invention to provide an electromagnetic shielding device in which the structure can be easily made to save costs involving material and labor.

The present invention discloses an electromagnetic shield device comprising at least one positioning and lining wall and at least one electromagnetic shielding mask and disposed in the electronic device to prevent the electrical component from being interfered by electromagnetic waves. The laminate member may be disposed within the electronic device and be part of the electronic device or a central plate within the electronic device.

The positioning and lining walls are fixed over the laminate member and extend towards the electrical component. Each side of the electromagnetic shielding mask is laterally in contact with the positioning and lining wall, and the bottom surface of the electromagnetic shielding mask is in longitudinal direction to the laminate member, so that the electromagnetic shielding mask is positioned over the electrical component to cover the electrical component.

In the above, the electromagnetic shielding mask is longitudinally bonded to the laminate member rearward by glue, quick-drying adhesive, twin adhesive, laser welding, laser spot welding or the like.

The electromagnetic shielding device of the present invention can avoid the electrical component in the electronic device from being interfered by electromagnetic waves. In order to increase the assembly precision of the electronic device and reduce the probability of error occurrence, the positioning and lining walls serve to help the electromagnetic shielding mask to be correctly mounted on the housing or the center plate. The electromagnetic shielding device can be configured very easily because of its simple structure. In addition, mounting the electromagnetic shielding device causes the conductive sponge to no longer exist. Therefore, the material cost for avoiding electromagnetic interference can be greatly reduced.

Other and further features, advantages, and benefits of the present invention will become apparent from the following detailed description with reference to the following figures. It will be appreciated that the above general description and the following detailed description are representative and are for illustrative purposes and do not limit the invention. The accompanying drawings are incorporated in and constitute a part of this application and, together with the above description, serve to explain the principles of the invention in general terms. Like parts refer to like parts throughout the present disclosure.

The objects, spirit, and advantages of the best embodiments of the present invention will be readily understood by the accompanying drawings and the detailed description.

Example

Reference is made to FIG. 2 which shows a schematic side view of the electromagnetic shielding device 40 of the present invention. In order to avoid the electrical component 42 in the electronic device 30 being interfered by electromagnetic waves, the electromagnetic shield device 40 is disposed in the electronic device 30, and the electrical component 42 is usually disposed in the PCB 44. do. A laminate member is defined inside the electronic device 30. As shown in FIG. 2, the laminate member is part of the housing 46 of the electronic device 30.

The electromagnetic shield 40 has a positioning and lining wall 50 and an electromagnetic shielding mask 52. In practice, the positioning and lining walls 50 may be one or more. In Fig. 2 there are two positioning and lining walls 50 respectively disposed on both sides. Each positioning and lining wall 50 is fixed above the laminate member and extends towards the electrical component 42. Each side of the electromagnetic shielding mask 52 abuts transversely on each positioning and lining wall 50 and the bottom surface of the electromagnetic shielding mask 52 abuts longitudinally on the laminate member, thus the electromagnetic shielding mask 52 ) Is positioned above the electrical component 42 to cover the electrical component.

In the above, the electromagnetic shielding mask is longitudinally bonded to the laminate member rearward by glue, quick-drying adhesive, twin adhesive, laser welding, laser spot welding or the like.

See FIG. 3, which shows a schematic plan view of a first best embodiment of the positioning and lining wall 50 of the present invention. The positioning and lining walls 50 are not limited in shape. As shown in FIG. 3, each positioning and lining wall 50 is formed as a rectangular laminate and corresponds to each side of the electromagnetic shielding mask. Therefore, the four positioning and lining walls 50 provide an excellent fastening function for the electromagnetic shielding mask 52.

See also FIG. 4, which shows a schematic plan view of a second best embodiment of the positioning and lining wall 50 of the present invention. As shown in FIG. 4, each positioning and lining wall 50 is formed as an L-shaped laminate and corresponds to each corner of the electromagnetic shielding mask 52. Thereby, the four positioning and lining walls 50 provide an excellent fastening function to the electromagnetic shielding mask 52. In practice, such L-shaped laminates provide a better fixation effect and even one L-shaped laminate can provide a two-dimensional position.

See FIG. 5, which shows a schematic cross-sectional view of another best embodiment of the laminate member of the present invention. As shown in FIG. 2, the laminate member is part of the housing 46 of the electronic device 30, while the laminate member may be any member of the electronic device 30. Referring further to FIG. 5, the laminate member is defined as a center plate 48 in the electronic device 30.

The center plate 48 divides the electronic device 30 into two spaces, an upper space and a lower space. The PCB 44 is located in the lower space and the electrical component 42 is disposed above the upper surface of the PCB 44. Therefore, the electromagnetic shield 40 is disposed on the lower surface of the center plate 48 to protect the electrical component 42.

See FIG. 6, which shows a schematic of a positioning and lining wall 50 made of the metal of the present invention. The material of the positioning and lining wall 50 is the same as the material of the laminate member. In other words, manufacturing processes can be simplified. If either the laminate member, ie the housing 46 or the center plate 48 is made of metal, it can then be punched to form the positioning and lining walls 50.

See FIG. 7, which shows a schematic view of the positioning and lining wall 50 made of the plastic of the present invention. If the laminate member is made of plastic, ie the housing 46 or the center plate 48 is made of plastic, thereby positioning and lining walls 50 using the plastic material can be integrated with the laminate member during manufacture. As a result, forming the positioning and lining walls 50 can save cost.

As a result, the electromagnetic shielding device 40 of the present invention can avoid the electrical component 42 in the electronic device 30 being interfered with by electromagnetic waves. In order to increase the assembly precision of the electronic device 30 and reduce the possibility of error occurrence, the positioning and lining wall 50 serves to help to be accurately mounted on the housing 46 or the center plate 48. The electromagnetic shielding device 40 can be configured very easily because of its simple structure. In addition, mounting the electromagnetic shield 40 ensures that the conductive sponge is no longer present. Therefore, the material cost for avoiding electromagnetic interference can be greatly reduced.

Although the present invention has been disclosed and described with reference to specific embodiments, the principles related herein are easy to use in many other embodiments that will be apparent to those skilled in the art. Therefore, the present invention is not limited only to what is indicated by the scope of the appended claims.

According to the present invention, an assembly shielding precision is provided by providing an electromagnetic shielding device employing a housing or a center plate and at least one positioning and lining wall, so that the electromagnetic shielding mask can easily and precisely cover the electrical components in the electronic device. Is improved and the probability of error is reduced.

Claims (14)

A electromagnetic shield device, in which a laminate member is defined inside an electronic device and disposed in the electronic device to avoid interference of electrical components within the electronic device by electromagnetic waves, At least one positioning and lining wall mounted and connected to the laminate member and extending from the laminate member towards the electrical component; And An electromagnetic shielding mask transversely abutting said positioning and lining wall and longitudinally abutting said laminate member to position and cover said electrical component. The electromagnetic shielding device of claim 1, wherein the positioning and lining walls are rectangular laminate shaped. The electromagnetic shielding device of claim 1, wherein the positioning and lining walls are L-shaped laminate shapes. 2. The electromagnetic shielding device of claim 1, wherein the electromagnetic shielding mask is glued longitudinally from the back to the laminate member in a longitudinal direction. The electromagnetic shielding device of claim 1, wherein the electromagnetic shielding mask is longitudinally bonded to the laminate member by a hot melt adhesive. The electromagnetic shielding device of claim 1, wherein the electromagnetic shielding mask is longitudinally bonded to the laminate member by a twin adhesive. 2. The electromagnetic shielding device of claim 1, wherein the electromagnetic shielding mask is longitudinally bonded to the laminate member by laser welding. The electromagnetic shielding device of claim 1, wherein the electromagnetic shielding mask is longitudinally bonded to the laminate member by laser spot welding. The electromagnetic shielding device of claim 1, wherein the laminate member is defined as part of the electronic device. The electromagnetic shielding device of claim 1, wherein the laminate member is defined as a center plate in the electronic device. The electromagnetic shielding device of claim 1, wherein the positioning and lining walls are made of plastic. The electromagnetic shielding device of claim 1, wherein the laminate member is made of plastic and integrated with the positioning and lining walls. The electromagnetic shield of claim 1, wherein the positioning and lining wall is made of metal. 14. The electromagnetic shield of claim 13, wherein the laminate member is made of metal and the positioning and lining walls are made by punching the laminate member.

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