CN111107737B

CN111107737B - Shield case structure and electronic device

Info

Publication number: CN111107737B
Application number: CN201811268311.0A
Authority: CN
Inventors: 张斌; 韩高才
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2018-10-29
Filing date: 2018-10-29
Publication date: 2022-02-15
Anticipated expiration: 2038-10-29
Also published as: CN111107737A

Abstract

The present disclosure relates to a shield can structure and an electronic apparatus, the shield can structure may include: the shielding cover covers the periphery of the device to be shielded, and an opening matched with the device to be shielded is formed in the shielding cover; the metal sheet is welded on one side, far away from the to-be-shielded device, of the shielding cover so as to seal the opening.

Description

Shield case structure and electronic device

Technical Field

The present disclosure relates to the field of terminal technologies, and in particular, to a shield structure and an electronic device.

Background

In the related art, a corresponding shielding cover needs to be added to a CPU and a radio frequency chip waiting shielding device in the electronic device, so that the electronic device meets the electromagnetic radiation requirement and ensures the normal operation of the electronic device.

However, the shielding structure in the related art cannot meet the requirement of increasing the thickness of the electronic device, which is not favorable for realizing a light and thin structure of the electronic device.

Disclosure of Invention

The present disclosure provides a shield case structure and an electronic apparatus to solve the disadvantages of the related art.

According to a first aspect of embodiments of the present disclosure, there is provided a shield can structure including:

the shielding cover covers the periphery of the device to be shielded, and an opening matched with the device to be shielded is formed in the shielding cover;

the metal sheet is welded on one side, far away from the to-be-shielded device, of the shielding cover so as to seal the opening.

Optionally, a plurality of openings are formed in the shielding cover to be respectively matched with the plurality of devices to be shielded; the shielding case structure comprises a plurality of metal sheets to respectively seal the openings.

Optionally, a plurality of openings are formed in the shielding cover to be respectively matched with the plurality of devices to be shielded; the shielding structure comprises a single metal sheet to simultaneously close the openings.

Optionally, the size of the metal sheet is larger than the opening; the metal sheet comprises an opening covering area corresponding to the opening and a welding area except the opening covering area, wherein the metal sheet is welded with the shielding case at the welding area.

Optionally, the metal sheet is welded to the shield case by an ultrasonic welding process.

Optionally, the metal sheet is welded to the shield case by a laser welding process.

Optionally, the metal sheet includes: copper foil.

According to a second aspect of the embodiments of the present disclosure, there is provided an electronic apparatus including: the shielding case structure according to any one of the above embodiments, so as to shield and protect a device to be shielded inside the electronic device.

Optionally, the method further includes:

the heat radiation structure is arranged between the metal sheet contained in the shielding case structure and the to-be-shielded device, and the two sides of the heat radiation structure are respectively attached to the metal sheet and the surface of the to-be-shielded device.

Optionally, the heat dissipation structure includes: graphite flakes or heat dissipating silicone grease.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a schematic view of electromagnetic shielding for a device to be shielded in the related art.

Fig. 2 is a cross-sectional view of the structure shown in fig. 1.

Fig. 3 is a schematic diagram illustrating a shield configuration according to an exemplary embodiment.

Fig. 4 is a cross-sectional view of the structure shown in fig. 3.

Fig. 5 is a schematic diagram illustrating another shield configuration according to an exemplary embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.

Fig. 1 is a schematic view of electromagnetic shielding for a device to be shielded in the related art; fig. 2 is a cross-sectional view of the structure shown in fig. 1. As shown in fig. 1-2, the electronic device includes a printed circuit board 1 ', and the printed circuit board 1 ' is provided with a device 10 ' to be shielded, such as a CPU, a radio frequency chip, and the like. The shielding case 2 'is disposed outside the device to be shielded 10', and the shielding case 2 'and the device to be shielded 10' cannot be in direct contact with each other, for example, a space a1 is kept between the side wall of the shielding case 2 'and the side wall of the device to be shielded 10', and a space a2 is kept between the top wall of the shielding case 2 'and the top of the device to be shielded 10', so as to meet the electromagnetic radiation requirement. Meanwhile, the top thickness of the shield can 2' should be at least d2 for process, structural, etc. reasons.

It can be seen that, in order to meet the electromagnetic shielding requirement, the space requirement of the device to be shielded 10 'in the longitudinal direction is increased from the thickness D1 to D' ═ D1+ a2+ D2, which greatly increases the longitudinal space requirement on the electronic device, and will result in an increase in the thickness of the electronic device, which is contrary to the trend of light and thin electronic devices, and is not favorable for the user experience.

Accordingly, the present disclosure solves the above-mentioned technical problems in the related art by improving the shield can 2'. The following is a detailed description by way of example:

FIG. 3 is a schematic diagram illustrating a shield configuration according to an exemplary embodiment; fig. 4 is a cross-sectional view of the structure shown in fig. 3. As shown in fig. 3-4, the shield structure may include: a shield case 2 and a metal sheet 3; wherein the shielding case 2 covers the periphery of the device to be shielded 10, the shielding case 2 is provided with an opening 20 that fits the device to be shielded 10 (for example, the device to be shielded 10 may include a CPU, a radio frequency chip, etc. on the printed circuit board 1, which is not limited by the present disclosure), and the metal sheet 3 is soldered on the side of the shielding case 2 away from the device to be shielded 10 (i.e., the top side as shown in fig. 4) to close the opening 20.

In an embodiment, the size of the opening 20 on the shielding can 2 is slightly larger than the device to be shielded 10, so that a space a1 can still be kept between the inner sidewall of the shielding can 2 and the device to be shielded 10 to meet the electromagnetic shielding requirement. Meanwhile, as the metal sheet 3 is welded on the top side of the shielding case 2, a shielding space of the device 10 to be shielded can be enclosed by the metal sheet 3 and the shielding case 2; wherein, a space a2 can be kept between the bottom surface of the metal sheet 3 and the top surface of the device to be shielded 10 to meet the electromagnetic shielding requirement.

In one embodiment, the metal sheet 3 can be processed separately by forming the shielding case structure by the shielding case 2 and the metal sheet 3 which are independent of each other, for example, the thickness of the metal sheet 3 can be reduced to d3, and d3 < d 2. For example, the metal sheet 3 may be made of copper foil, and the thickness d3 of the metal sheet 3 is even negligible compared to the top thickness d2 of the shield can 2' in the related art. Therefore, under the condition of meeting the electromagnetic shielding requirement, the space requirement of the device to be shielded 10 in the longitudinal direction is reduced from D' D1+ a2+ D2 in the related art to D1+ a2+ D3, so that the longitudinal space requirement of the electronic equipment is reduced, and the overall thickness of the electronic equipment is reduced. Of course, the metal sheet 3 may be made of other types of metals or alloys, such as aluminum foil, tin foil, etc., in addition to the copper foil, and the present disclosure is not limited thereto.

In an embodiment, the specification of the metal sheet 3 can be properly adapted to the opening 20, so that the outer sidewall of the metal sheet 3 can be welded to the inner sidewall of the shielding can 2, and the metal sheet 3 can be prevented from protruding out of the top surface of the shielding can 2, thereby achieving a better overall effect. In another embodiment, the gauge of the metal sheet 3 may be larger than the opening 20, so that the metal sheet 3 includes a welding area corresponding to the opening coverage area of the opening 20 except for the opening coverage area, where the metal sheet 3 is welded with the shield can 2.

In an embodiment, the metal sheet 3 may be welded with the shield can 2 through an ultrasonic welding process, a laser welding process, or other welding processes in the related art, which is not limited by the present disclosure. By welding the metal sheet 3 and the shielding case 2, compared with other connection methods such as bonding, the specification requirement on a matching surface (such as the outer side wall or the welding area of the metal sheet 3) is lower, that is, only relatively less area is needed to achieve sufficient connection strength, and even if the area of the opening 20 is large, the metal sheet can still be normally used, the problems of lap short circuit and the like are avoided, and the metal sheet and the shielding case have extremely high reliability.

In one embodiment, the shield can 2 may be provided with a plurality of openings 20. For example, FIG. 5 is a schematic illustration of another shield configuration shown in accordance with an exemplary embodiment; as shown in fig. 5, the printed circuit board 1 may be provided with a device to be shielded 10A, a device to be shielded 10B, and the like, and the shield can 2 may be provided with

corresponding openings

20A, 20B, and the like.

In one embodiment, the shield structure may include a plurality of metal sheets to respectively close the respective openings; for example, for the embodiment shown in fig. 5, the

openings

20A and 20B may be closed by two metal sheets, respectively.

In another embodiment, the shield structure may comprise a single metal sheet to simultaneously close off each opening; for example, for the embodiment shown in fig. 5, the

openings

20A and 20B can be closed simultaneously by the metal sheet 3. Wherein the corresponding coverage area of the metal sheet 3 on the shielding case 2 can be as shown by the dashed line box in fig. 5, the coverage area can include the opening coverage area corresponding to the opening 20A, the opening 20B, and the coverage area can include the welding area except the opening coverage area, then compared with the structure using a plurality of metal sheets, the welding area of the metal sheet 3 is relatively larger, so that the connection reliability of the whole metal sheet is higher.

The shielding case structure provided in the present disclosure may be applied to any type of electronic device, such as a mobile phone, a tablet, a notebook, a television, and the like, and the present disclosure does not limit the present disclosure.

In an embodiment, when the shielding case structure of the present disclosure is adopted in an electronic device, a heat dissipation structure may be further disposed in the electronic device, the heat dissipation structure may be disposed between the metal sheet 3 and the to-be-shielded device 10 included in the shielding case structure, and two sides of the heat dissipation structure are respectively attached to the surfaces of the metal sheet 3 and the to-be-shielded device 10, so as to dissipate heat for the to-be-shielded device 10. Wherein, this heat radiation structure can include: graphite flakes, heat sink silicone grease, or the like, which the present disclosure is not limited to.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A shielding cage structure, comprising:

the metal sheet is welded on one side, far away from the device to be shielded, of the shielding cover so as to close the opening; the metal sheet is welded with the shielding case through an ultrasonic welding process or a laser welding process; the surface of the metal sheet facing the device to be shielded is attached to one side of a heat dissipation structure in the electronic equipment where the shielding case structure is located, and the other side of the heat dissipation structure is attached to the surface of the device to be shielded.

2. The shielding cage structure of claim 1, wherein said shielding cage has a plurality of openings for respectively engaging a plurality of devices to be shielded; the shielding case structure comprises a plurality of metal sheets to respectively seal the openings.

3. The shielding cage structure of claim 1, wherein said shielding cage has a plurality of openings for respectively engaging a plurality of devices to be shielded; the shielding structure comprises a single metal sheet to simultaneously close the openings.

4. The shielding cage structure of claim 1 wherein said sheet metal is of a gauge larger than said opening; the metal sheet comprises an opening covering area corresponding to the opening and a welding area except the opening covering area, wherein the metal sheet is welded with the shielding case at the welding area.

5. The shielding cage structure of claim 1, wherein said metal sheet comprises: copper foil.

6. An electronic device, comprising: the shielding case structure of any one of claims 1-5, for shielding and protecting a device to be shielded inside the electronic equipment.

7. The electronic device of claim 6, further comprising:

8. The electronic device of claim 7, wherein the heat dissipation structure comprises: graphite flakes or heat dissipating silicone grease.