CN107613052B - Mobile terminal and its circuit board assembly, shielding case - Google Patents

Abstract

The present invention discloses a shielding cover, which includes a top wall, a first side wall and a second side wall, wherein the first side wall and the second side wall are both bent and connected to the top wall, the first side wall and the second side wall are arranged opposite to each other, and the dimension of an end of at least one of the first side wall and the second side wall away from the top wall along a first direction is smaller than the dimension of the top wall along the first direction, and the first direction is a direction parallel to the top wall and parallel to the first side wall and the second side wall. The present invention also discloses a circuit board assembly and a mobile terminal. Through the above manner, the present invention can facilitate the routing design between the shielded object in the shielding cover and the surrounding circuits while meeting the shielding and protection function requirements of the shielding cover.

Description

Mobile terminal and its circuit board assembly, shielding case

technical field

The invention relates to the field of electronic equipment, in particular to a mobile terminal, a circuit board assembly and a shielding cover thereof.

Background technique

In order to improve the relevant performance (such as wireless sensitivity) of electronic equipment, especially mobile terminals such as smart phones, it is usually necessary to use a shielding cover on the electronic components of the circuit board to shield important sensitive signals or strong interference sources.

With the diversification of functions and the improvement of performance of mobile terminals, there are more and more applications of shielding covers, and the number and types of circuit boards are also gradually increasing. Since the settings of the shielding cover must meet the function of protecting electronic components or shielding the outside world Interfering functions, resulting in limited routing space between electronic components and surrounding circuits.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide a mobile terminal, a circuit board assembly thereof, and a shielding cover, which can facilitate the design of the wiring between the shielded object in the shielding cover and the surrounding circuits under the condition that the requirements of the shielding and protection functions of the shielding cover are met. .

A technical solution adopted in the embodiment of the present invention is to provide a shielding cover, the shielding cover includes a top wall, a first side wall and a second side wall, and both the first side wall and the second side wall are connected to the top wall by bending , the first side wall and the second side wall are arranged oppositely, and the size of the end of at least one of the first side wall and the second side wall away from the top wall along the first direction is smaller than the size of the top wall along the first direction, the first The direction is a direction parallel to the top wall and parallel to the first and second side walls.

Another technical solution adopted in the embodiments of the present invention is to provide a circuit board assembly, the circuit board assembly includes a circuit board, a shielding object disposed on the circuit board, and a shielding object disposed on the circuit board and covering the shielding object cover, the shielding cover is the above-mentioned shielding cover.

Another technical solution adopted by the embodiments of the present invention is to provide a mobile terminal, where the mobile terminal includes a terminal body and a circuit board assembly, and the circuit board assembly is the above-mentioned circuit board assembly.

The beneficial effects of the embodiments of the present invention are: in the embodiments of the present invention, by setting the shielding cover to include a top wall, a first side wall, and a second side wall, the first side wall and the second side wall are both connected to the top wall by bending, and the first side wall and the second side wall are connected by bending. The side wall and the second side wall are arranged opposite to each other, and the dimension of the end of at least one of the first side wall and the second side wall away from the top wall along the first direction is smaller than the dimension of the top wall along the first direction, and the first direction is parallel The direction of the top wall and parallel to the first side wall and the second side wall can facilitate the design of the wiring between the shielded object in the shield and the surrounding circuits under the condition that the shielding and protection function requirements of the shield are met. .

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic three-dimensional structure diagram of a circuit board assembly according to an embodiment of the present invention;

FIG. 2 is a first structural schematic diagram of the first side wall of the circuit board assembly according to the embodiment of the present invention when viewed from the side in FIG. 1;

3 is a schematic structural diagram of the second side wall of the circuit board assembly according to the embodiment of the present invention when viewed from the side in FIG. 1;

Fig. 4 is the second structure schematic diagram of the first side wall;

Fig. 5 is the third structure schematic diagram of the first side wall;

Fig. 6 is the fourth kind of structure schematic diagram of the first side wall;

Fig. 7 is the fifth structure schematic diagram of the first side wall;

FIG. 8 is a schematic diagram of a mobile terminal according to an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, the drawings only show some but not all structures related to the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The terms "first", "second" and the like in the present invention are used to distinguish different objects, rather than to describe a specific order. Furthermore, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally also includes For other steps or units inherent to these processes, methods, products or devices.

Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor a separate or alternative embodiment that is mutually exclusive of other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

Please refer to FIG. 1 , which is a schematic three-dimensional structural diagram of a circuit board assembly according to an embodiment of the present invention. In this embodiment, the circuit board assembly includes a circuit board 100 , a shield 200 disposed on the circuit board 100 , and a shielding case 300 disposed on the circuit board 100 and covering the shield 200 .

Optionally, the shielded object 200 may be a metal trace or an electronic component provided on the circuit board 100 , and the electronic component may be provided on the surface of the circuit board 100 by means of patching or welding. In other embodiments, the electronic components may also be disposed on the surface of the circuit board 100 in other manners.

Optionally, the shielding case 300 may be disposed on the circuit board 100 by soldering. It should be understood that the connection method between the shielding cover 300 and the circuit board 100 is not limited to welding, and may also be glued, snap-connected, or other fixed connection methods, which are not limited in the embodiment of the present invention.

The shielding case 300 may include a top wall 10 , a first side wall 11 and a second side wall 12 .

Both the first side wall 11 and the second side wall 12 are connected to the top wall 10 by bending, and the first side wall 11 and the second side wall 12 are arranged opposite to each other.

Specifically, the first side wall 11 and the top wall 10 are connected by bending at the first edge 13 (eg, the left edge shown in the figure) of the top wall 10 . Optionally, the first side wall 11 may be vertically bent and connected to the top wall 10 , that is, the first side wall 11 may be perpendicular to the top wall 10 . In other embodiments, the first side wall 11 may also be connected to the top wall 10 by bending at other angles, which is not limited in the embodiment of the present invention.

The second side wall 12 is connected to the top wall 10 by bending at the second edge 14 (eg, the right edge shown in the figure) of the top wall 10 . The second edge 14 is the edge of the top wall 10 opposite the first edge 13 . Optionally, the second side wall 12 may be vertically bent and connected to the top wall 10 , that is, the second side wall 12 may be perpendicular to the top wall 10 . In other embodiments, the second side wall 12 may also be connected to the top wall 10 by bending at other angles, which is not limited in this embodiment of the present invention.

For the convenience of description, the first direction a is defined as a direction parallel to the top wall 10 and parallel to the first side wall 11 and the second side wall 12 . For example, the first direction a is the longitudinal direction of the shield case 300 shown in the figure.

The dimension of at least one end of the first side wall 11 and the second side wall 12 away from the top wall 10 (eg, the lower end shown in the figure) along the first direction a is smaller than the dimension of the top wall 10 along the first direction a.

The circuit board assembly further includes a first connection layer 15 and a second connection layer 16 disposed on the circuit board 100, the first connection layer 15 is used for connecting with the first side wall 11, and the second connection layer 16 is used for connecting with the second side The walls 12 are connected, and the dimension of at least one of the first connection layer 15 and the second connection layer 16 along the first direction a is smaller than the dimension of the top wall 10 along the first direction a.

Optionally, the dimension of the first connection layer 15 along the first direction a may be equal to the dimension of the first sidewall 11 along the first direction a, and the dimension of the second connection layer 16 along the first direction b may be equal to the dimension of the second sidewall 12 Dimension along the first direction a.

For example, when the shielding case 300 and the circuit board 100 are connected by welding, the first connection layer 15 may be the first pad disposed on the circuit board 100 , and the second connection layer 16 may be disposed on the circuit board 100 . of the second pad. The shield 300 is connected to the first connection layer 15 through the end of the first side wall 11 away from the top wall 10 , and the shield 300 is also connected to the second connection layer 16 through the end of the second side wall 11 away from the top wall 10 .

Optionally, the size of one end of the first side wall 11 and the second side wall 12 away from the top wall 10 along the first direction a is smaller than the size of the top wall 10 along the first direction a. Correspondingly, the size of the first pad along the first direction a may be set to be smaller than the size of the top wall 10 along the first direction a, and the size of the second pad along the first direction a may be set to be smaller than the size of the top wall 10 Dimension along the first direction a.

In other embodiments, the dimension of one end of the first side wall and the second side wall away from the top wall along the first direction is smaller than the dimension of the top wall along the first direction, and the dimension of the other end away from the top wall The dimension of one end along the first direction is equal to the dimension of the top wall along the first direction

In the above manner, the size of the lower ends of the first side wall 11 and the second side wall 12 along the first direction a is set to be smaller than the size of the top wall 10 along the first direction a, so that the first pad and the second solder pad can be The size of the disk along the first direction a is smaller than the size of the top wall 10 along the first direction a. On the one hand, the projection of the top wall 10 on the circuit board 100 can completely cover the shielded object 200 to ensure that the shielding cover 300 is shielded against the shielded object 200. On the other hand, since the size of the first pad and the second pad is smaller than the size of the top wall, the first pad and the second pad can leave space to facilitate the shielded object 200 and the surrounding Trace layout between circuits.

Please refer to FIG. 2 in conjunction with FIG. 1 . FIG. 2 is a first structural schematic diagram of the first side wall of the circuit board assembly according to the embodiment of the present invention when viewed from the side in FIG. 1 .

As shown in FIG. 2 , optionally, the first side wall 11 includes a first side wall portion 111 and a second side wall portion 112 .

The first side wall portion 111 is connected to the top wall 10 by bending, and the second side wall portion 112 is connected to one end (eg, the lower end shown in the figure) of the first side wall portion 111 away from the top wall 10 .

The size of the first side wall portion 111 along the first direction a is equal to the size of the top wall 10 along the first direction a, and the size of the second side wall portion 112 along the first direction a is smaller than the size of the top wall 10 along the first direction a.

The first side wall portion 111 and the second side wall portion 112 are both arranged in a rectangular shape so that the first side wall 11 has a rectangular notch 113 .

Please refer to FIG. 3 in conjunction with FIG. 1 . FIG. 3 is a schematic structural diagram of the second side wall of the circuit board assembly according to the embodiment of the present invention when viewed from the side in FIG. 1 .

As shown in FIG. 3 , the second side wall 12 includes a third side wall portion 121 and a fourth side wall portion 122 .

The third side wall portion 121 is connected to the top wall 10 by bending, and the fourth side wall portion 122 is connected to an end of the third side wall portion 121 away from the top wall 10 .

The size of the third side wall portion 121 along the first direction a is equal to the size of the top wall 10 along the first direction a, and the size of the fourth side wall portion 122 along the first direction a is smaller than the size of the top wall 10 along the first direction a.

Both the third side wall portion 121 and the fourth side wall portion 122 are provided in a rectangular shape so that the second side wall has a rectangular notch 123 .

Please refer to FIG. 4 , which is a schematic diagram of a second structure of the first side wall.

As shown in FIG. 4 , in the second structure of the first side wall 21 , the first side wall portion 211 may be arranged in a rectangular shape, and the second side wall portion 212 may be arranged in a right-angled trapezoid, so that the first side wall 21 has a missing The corner, specifically, the missing corner is the notch 213 of the right triangle.

In the above manner, the manufacturing process of the first side wall 21 can be simplified, and only one missing corner needs to be cut.

Similarly, the third side wall portion can also be arranged in a rectangular shape, and the fourth side wall portion can also be arranged in a right-angled trapezoid shape, so that the second side wall portion has a missing corner. Its structure is similar to that of the first side wall shown in FIG. 4 , and details are not repeated here.

Please refer to FIG. 5 , which is a schematic diagram of a third structure of the first side wall.

As shown in FIG. 5 , the first side wall 31 is rectangular, and the size of the rectangular first side wall 31 along the first direction a is smaller than the size of the top wall 10 along the first direction a.

It should be understood that the second side wall can also be designed with similar deformation, which will not be repeated here.

Please refer to FIG. 6 , which is a schematic diagram of a fourth structure of the first side wall.

As shown in FIG. 6 , the first side wall 41 is a right-angled trapezoid, the lower bottom b of the first side wall 41 is connected to the top wall 10 , and the length of the lower bottom b is equal to the size of the top wall 10 along the first direction a, the first The upper bottom c of one side wall 41 is connected to the first connection layer. The length of the lower base b is greater than the length of the upper base c.

The second side wall can also have a similar deformation design as the first side wall, which will not be repeated here.

Please refer to FIG. 7 , which is a schematic diagram of a fifth structure of the first side wall.

As shown in FIG. 7 , the first side wall 51 includes a rectangular first side wall portion 511 and a rectangular second side wall portion 512 . The dimension of the second side wall portion 511 along the first direction a is smaller than the dimension of the first side wall portion 512 along the first direction a. The second side wall portion 512 is connected with the middle section of the lower end of the first side wall portion 511, so that the first side wall 51 is on opposite sides along the first direction a shown in FIG. Left and right sides) have a first rectangular notch 513 and a second rectangular notch 514 respectively.

In the above manner, traces can be designed on both sides of the first pad along the first direction, and the traces are more uniform, so that the traces are not densely distributed on one side.

The second side wall can also have a similar deformation design as the first side wall, which will not be repeated here.

It should be understood that one of the first side wall and the second side wall can be configured as one structure in the above-mentioned embodiment, and the other can be configured as another structure in the above-mentioned embodiment.

In this embodiment, the shielding case 300 only includes two side walls (the first side wall 11 and the second side wall 12 ) that are arranged opposite to each other. In other embodiments, the other two sides of the top wall 10 may also be provided with side walls.

For example, the shielding case may further include a third side wall (not shown) and a fourth side wall (not shown) connected to the top wall 10 by bending, the third side wall and the fourth side wall are arranged oppositely, and the third side wall is opposite to the fourth side wall. An end of at least one of the wall and the fourth side wall remote from the top wall has a dimension in the first direction smaller than a dimension of the top wall in the first direction.

The structures of the third and fourth side walls are similar to those of the first and second side walls. It will not be repeated here.

The bending connection mentioned above may be a 90-degree vertical bending connection, or a bending connection at other angles.

Please refer to FIG. 8 , which is a schematic diagram of a mobile terminal according to an embodiment of the present invention. In this embodiment, the mobile terminal includes a terminal body 81 and a circuit board assembly 82, and the circuit board assembly 82 is the circuit board assembly described in any one of the above embodiments.

The mobile terminal may be a smart phone, a tablet computer, a wearable smart device, and the like.

In the embodiment of the present invention, the shielding cover includes a top wall, a first side wall and a second side wall, the first side wall and the second side wall are both connected to the top wall by bending, and the first side wall and the second side wall are oppositely arranged , the size of one end of at least one of the first side wall and the second side wall away from the top wall along the first direction is smaller than the size of the top wall along the first direction, and the first direction is parallel to the top wall and parallel to the first side The direction of the wall and the second side wall can facilitate the design of the wiring between the shielded object in the shield and the surrounding circuits under the condition that the requirements of the shielding and protection functions of the shielding cover are met.

The above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied to other related technologies Fields are similarly included in the scope of patent protection of the present invention.

Claims (5)

1. A shielding case is characterized by comprising a top wall, a first side wall and a second side wall, wherein the first side wall and the second side wall are connected with the top wall in a bent mode, the first side wall and the second side wall are oppositely arranged, the edges of one ends, far away from the top wall, of the first side wall and the second side wall are continuous, the size of one ends, far away from the top wall, of the first side wall and the second side wall along a first direction is smaller than that of the top wall along the first direction, and the first direction is a direction parallel to the top wall and parallel to the first side wall and the second side wall;

the first side wall comprises a first side wall part and a second side wall part, the first side wall part is connected with the top wall in a bending mode, the second side wall part is connected with one end, away from the top wall, of the first side wall part, the size of the first side wall part in the first direction is equal to that of the top wall in the first direction, and the size of the second side wall part in the first direction is smaller than that of the top wall in the first direction, so that a notch is formed at the top corner position of the first side wall;

the second side wall comprises a third side wall part and a fourth side wall part, the third side wall part is connected with the top wall in a bending mode, the fourth side wall part is connected with one end, away from the top wall, of the third side wall part, the size of the third side wall part in the first direction is equal to that of the top wall in the first direction, and the size of the fourth side wall part in the first direction is smaller than that of the top wall in the first direction, so that a notch is formed at the position of a top corner of the second side wall;

the first side wall and the second side wall are symmetrically arranged on two opposite sides of the top wall along the symmetry axis of the top wall, and the notch arranged on the first side wall is communicated with the notch arranged on the second side wall;

the first side wall and the second side wall are respectively connected to a first pad and a second pad of a circuit board in a welding mode, the size of the first pad and the second pad along the first direction is smaller than that of the top wall along the first direction, and the projection of the top wall on the circuit board completely covers the shielding object between the first side wall and the second side wall.

2. The shielding cage of claim 1,

the first side wall part and the second side wall part are both arranged in a rectangular shape so that the first side wall is provided with a rectangular notch;

the third side wall part and the fourth side wall part are both arranged in a rectangular shape, so that the second side wall is provided with a rectangular notch.

3. The shielding cage of claim 1,

the first side wall part is arranged in a rectangular shape, and the second side wall part is arranged in a right trapezoid shape so that the first side wall has a unfilled corner;

the third side wall portion is arranged in a rectangular shape, and the fourth side wall portion is arranged in a right trapezoid shape so that the second side wall has a notch angle.

4. A circuit board assembly, comprising a circuit board, a shielding object disposed on the circuit board, and a shielding case disposed on the circuit board and covering the shielding object, wherein the shielding case is the shielding case of any one of claims 1 to 3.

5. A mobile terminal characterized in that the mobile terminal comprises a terminal body and a circuit board assembly, the circuit board assembly being the circuit board assembly of claim 4.

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