A shielding cover, a circuit board assembly, a terminal

Abstract

The present invention discloses a shielding cover, a circuit board assembly and a terminal. The shielding cover includes a shielding outer cover and a shielding inner cover. The shielding inner cover includes a first top portion with an opening and a first side wall, and the first side wall extends from the periphery of the first top portion; the shielding outer cover includes a second top portion and a second side wall, and the second side wall extends from the periphery of the second top portion; the shielding outer cover covers the shielding inner cover, the second top portion covers the opening, and the first side wall and the second side wall are closely attached; while the opening of the shielding inner cover is shielded by the shielding outer cover, since both the first side wall and the second side wall are formed by stretching and are closely attached, the first side wall and the second side wall form a sealed edge, and the buckle structure extending from the edge of the first side wall makes the first side wall and the second side wall more closely buckled. Therefore, after the shielding cover is installed on the circuit board, a closed space is formed among the inner cover of the shielding cover, the outer cover of the shielding cover and the circuit board, thereby solving the problem of signal leakage of the shielding cover and improving the shielding effect.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of mobile terminals, and particularly to a shielding cover, a circuit board assembly, and a terminal. Background Art

[0002] At present, in order to ensure that the signals and functions of each module in communication products are independent of each other and not interfered by other modules, shielding measures are taken in the design process. Using a shielding cover for shielding is one of the most commonly used methods. Especially at present, the 5G technology has high requirements for the shielding effect of the shielding cover. There are two forms of the current shielding cover. One is an integrated shielding cover, and the other is a two-piece shielding cover. The bending process is adopted, and there are mouth-closing holes on the side wall.

[0003] In the process of implementing the present invention, the inventors found that there are at least the following problems in the prior art: The integrated shielding cover is not convenient for disassembly and maintenance; there are leaks in the bent part and the fastening holes on the side wall of the two-piece shielding cover, and it cannot well ensure that each module is not interfered. Even a very small leak will affect other functional modules. The shielding cover of the prior art can no longer meet the requirements for the shielding effect of the shielding cover in the current 5G era. Summary of the Invention

[0004] The purpose of the embodiments of the present invention is to provide a shielding cover, so that the shielding cover can improve the shielding effect and ensure that there is no interference between each module.

[0005] To solve the above technical problems, the embodiments of the present invention provide a shielding cover, including: a shielding outer cover, and a shielding inner cover for being fixed on a circuit board; the shielding inner cover includes a first top portion with an opening and a first side wall, and the first side wall extends from the periphery of the first top portion; the shielding outer cover includes a second top portion and a second side wall, and the second side wall extends from the periphery of the second top portion; the shielding outer cover covers the shielding inner cover, the second top portion covers the opening, and the first side wall is in close fit with the second side wall; a plurality of buckle structures extend from the edge of the first side wall, and each buckle structure abuts against the outer surface of the second side wall.

[0006] The embodiments of the present invention also provide a circuit board assembly, including the above-mentioned shielding cover.

[0007] The embodiments of the present invention also provide a terminal, including the above-mentioned circuit board assembly.

[0008] In the embodiment of the present invention, compared with the prior art, the first side wall extends from the periphery of the first top of the shielding inner cover, and the second side wall extends from the periphery of the second top of the shielding outer cover. When the shielding outer cover covers the shielding inner cover, the second top covers the opening of the first top and the first side wall is closely attached to the second side wall, and several buckle structures extend from the edge of the first side wall and abut against the outer surface of the second side wall; that is, while the opening of the shielding inner cover is shielded by the shielding outer cover, since both the first side wall and the second side wall are formed by stretching and are closely attached, the first side wall and the second side wall form a sealed edge, and the buckle structure makes the first side wall and the second side wall more closely buckled; Therefore, after the shielding cover is installed on the circuit board, a closed space is formed among the inner cover of the shielding cover, the outer cover of the shielding cover and the circuit board, thereby solving the problem of signal leakage of the shielding cover and improving the shielding effect.

[0009] In addition, the buckle structure includes a connecting portion, a spring arm and an abutting portion connected in sequence. The connecting portion is connected to the edge of the first side wall, and the abutting portion abuts against the outer surface of the second side wall under the elastic force of the spring arm. In this embodiment, the elastic force of the spring arm forces the abutting portion to abut against the outer surface of the second side wall, further making the first side wall and the second side wall closely attached. At the same time, the design of the spring arm is also convenient for installation and disassembly.

[0010] In addition, each buckle structure includes two connecting portions and two spring arms, and the abutting portion includes a first abutting portion and a second abutting portion; the connecting portion extends horizontally outward from the edge of the first side wall, the spring wall extends upward from the free end of the connecting portion and then extends obliquely toward the first side wall, the first abutting portion connects the two spring walls, the first abutting portion extends upward from the free ends of the two spring walls and obliquely away from the first side wall, and the second abutting portion extends downward from the free portion of the first abutting portion close to the two spring walls, and the second abutting portion abuts against the outer surface of the second side wall. By providing two connecting portions and two spring walls, the position of the abutting portion 303 is further fixed, and the abutting effect is enhanced. At the same time, the first abutting portion is inclined away from the first side wall, making it more convenient to disassemble the shielding cover during maintenance.

[0011] In addition, a groove is provided on the outer surface of the second side wall corresponding to the position of the abutting portion, and the abutting portion abuts in the groove. By providing a groove on the second side wall, the position where the abutting portion abuts is fixed, and the abutting effect is enhanced.

[0012] In addition, several buckle structures are evenly distributed on the edge of the first side wall. By several evenly distributed buckle structures abutting against the outer surface of the second side wall, the force on the outer surface of the second side wall is relatively uniform, and the close-fitting effect of the first side wall and the second side wall is better, further improving the shielding effect.

[0013] In addition, the height of the first side wall is greater than or equal to the height of the second side wall. By making the first side wall and the second side wall have the same height, leakage is further reduced and the shielding effect is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] One or more embodiments are exemplarily illustrated by the pictures in the corresponding drawings. These exemplary illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, unless otherwise stated. The drawings in the figures do not constitute a scale limitation.

[0015] Figure 1 is a schematic structural diagram of a shielding cover according to the first embodiment of the present invention;

[0016] Figure 2 is a schematic structural diagram of a buckle structure of a shielding cover according to the first embodiment of the present invention;

[0017] Figure 3 is a schematic cross-sectional structural diagram of a buckle structure of a shielding cover according to the first embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will elaborate on each embodiment of the present invention in conjunction with the drawings. However, those of ordinary skill in the art can understand that in each embodiment of the present invention, many technical details are provided to help readers better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in the present application can still be implemented. The division of the following embodiments is for convenience of description and should not constitute any limitation on the specific implementation of the present invention. The various embodiments can be combined and cross-referenced with each other on the premise of not being contradictory.

[0019] The first embodiment of the present invention relates to a shielding cover. This embodiment includes: a shielding outer cover, and a shielding inner cover for being fixed on a circuit board; the shielding inner cover includes a first top portion with an opening and a first side wall, and the first side wall extends from the periphery of the first top portion; the shielding outer cover includes a second top portion and a second side wall, and the second side wall extends from the periphery of the second top portion; the shielding outer cover covers the shielding inner cover, the second top portion covers the opening, and the first side wall and the second side wall are closely attached; several buckle structures extend from the edge of the first side wall, and each buckle structure abuts against the outer surface of the second side wall.

[0020] The following specifically describes the implementation details of a shielding cover in this embodiment. The following content is only provided for convenience of understanding and is not necessary for implementing this solution.

[0021] The structural schematic diagram of the shielding cover in this embodiment is as follows Figure 1 shown, specifically including: a shielding outer cover 20, a shielding inner cover 10 for fixing on the circuit board, and a plurality of hook structures 30.

[0022] In this embodiment, the shielding inner cover 10 includes a first top portion 101 with an opening 103 and a first side wall 102. The first side wall 102 extends from the periphery of the first top portion 101 by means of a drawing process; the shielding outer cover 20 includes a second top portion 201 and a second side wall 202. The second side wall 202 also extends from the periphery of the second top portion 201 by means of a drawing process. When the shielding outer cover 20 is covered on the shielding inner cover 10, the second top portion 201 covers the opening 103, and the first side wall 102 and the second side wall 202 are closely attached. The edges of the first side wall 102 and the second side wall 202 form a sealed edge. A plurality of buckle structures abut against the outer surface of the second side wall, making the first side wall and the second side wall fit more closely. A closed space is formed between the shielding inner cover 10 and the shielding outer cover 20. Since the module is arranged between the shielding inner cover 10 and the shielding outer cover 20, the module is in a closed space, thereby improving the shielding effect and ensuring that there is no interference between modules.

[0023] In an example, the height of the first side wall 102 is greater than or equal to the height of the second side wall 202. By making the height of the first side wall 102 greater than or equal to the height of the second side wall 202, when the shielding outer cover 20 is covered on the shielding inner cover 10, the first top portion 101 can be closely attached to the second top portion 201, further making a closed space formed between the shielding inner cover 10 and the shielding outer cover 20, and improving the shielding effect of the shielding cover.

[0024] The structural schematic diagram of the buckle structure of the shielding cover in this embodiment is as follows Figure 2 shown, and the cross-sectional structural schematic diagram of the buckle structure is as follows Figure 3 shown. The buckle structure 30 extends from the edge of the first side wall 102, and each buckle structure 30 abuts against the outer surface of the second side wall 202. By means of the extended plurality of buckle structures 30, the first side wall 102 and the second side wall 202 are tightly buckled, further making a more closed space formed between the first side wall 102 and the second side wall 103, and improving the shielding effect.

[0025] In this embodiment, the snap structure 30 includes a connecting portion 301, a resilient arm 302, and a resisting portion 303 that are connected in sequence. The connecting portion 301 is connected to the edge of the first side wall 102, and the resisting portion 303 is resisted against the outer surface of the second side wall 202 under the elastic force of the resilient arm 302. Due to the elastic force of the resilient arm 302, the resisting portion 303 is resisted against the outer surface of the second side wall 202, further enabling the first side wall 102 and the second side wall 202 to be closely attached. At the same time, the resilient wall 302 has a certain elastic range, making it more convenient to install and disassemble the shielding cover.

[0026] In one example, the resisting portion includes a first resisting portion 3031 and a second resisting portion 3032. Each snap structure 30 includes two connecting portions 301 and two resilient walls 302. The connecting portion 301 extends horizontally outward from the edge of the first side wall 102. The resilient wall 302 extends upward from the free end of the connecting portion 301 and then extends obliquely toward the first side wall 102. The first resisting portion 3031 connects the two resilient walls 302. The first resisting portion 3031 extends upward from the free ends of the two resilient walls 302 and obliquely away from the first side wall 102. The second resisting portion 3032 extends downward from the free portion of the first resisting portion 3031 close to the two resilient walls 302. The second resisting portion is resisted against the outer surface of the second side wall. By providing two connecting portions and two resilient walls, the position of the resisting portion is further fixed, enhancing the resisting effect. At the same time, the first resisting portion is inclined outward away from the first side wall, making it more convenient to disassemble the shielding cover during maintenance.

[0027] In one example, the connecting portion 301 can be formed by extending from the first side wall 102 or by other means. The resilient arm 302 is connected to the connecting portion 301, and the resisting portion 303 is resisted against the outer surface of the second side wall 202 under the elastic force of the resilient arm 302. Among them, the second resisting portion 3032 in the resisting portion 303 is resisted against the outer surface of the second side wall 202 and is closely attached to the second side wall 202. The interference amount between the second resisting portion 303 and the second side wall 202 is 0.05 mm to 0.1 mm, such as 0.05 mm, 0.75 mm, 0.01 mm.

[0028] In one example, a groove is formed on the outer surface of the second side wall 202 corresponding to the resisting portion 303, and the resisting portion 303 is resisted in the groove. Specifically, the second resisting portion 3032 is resisted in the groove. By forming a groove on the second side wall 202, the position where the resisting portion 303 is resisted is fixed, enhancing the resisting effect.

[0029] In one example, the width of the second resisting portion 3032 is 1.5 mm to 2.0 mm, such as 1.5 mm, 1.75 mm, 2.0 mm.

[0030] In one example, a plurality of buckle structures 30 are evenly distributed along the edge of the first side wall 102. Through the plurality of evenly distributed buckle structures 30, the first side wall 102 and the second side wall 202 are further tightly buckled together to reduce leakage.

[0031] The above classifications of various technical solutions are only for clear description. During implementation, they can be combined into one solution or some solutions can be split into multiple solutions. As long as they include the same logical relationship, they are all within the protection scope of this patent; making insignificant modifications to the technical solutions or introducing insignificant designs, but without changing the core design of the technical solutions, are all within the protection scope of this patent.

[0032] In this embodiment, the first side wall extends from the periphery of the first top of the shielding inner cover, and the second side wall extends from the periphery of the second top of the shielding outer cover. When the shielding outer cover covers the shielding inner cover, the second top covers the opening of the first top and the first side wall is closely attached to the second side wall. Through a plurality of buckle structures extending from the edge of the first side wall, the first side wall and the second side wall are tightly buckled together; that is, while the opening of the shielding inner cover is shielded by the shielding outer cover, since both the first side wall and the second side wall are formed by stretching and are closely attached, the first side wall and the second side wall form a sealed edge, and the buckle structures make the first side wall and the second side wall more tightly buckled; therefore, after the shielding cover is installed on the circuit board, a sealed space is formed among the shielding inner cover, the shielding outer cover, and the circuit board, thus solving the signal leakage problem of the shielding cover and improving the shielding effect.

[0033] The second embodiment of the present invention relates to a circuit board assembly, including the above-mentioned shielding cover.

[0034] Specifically, because the above-mentioned shielding cover is used in the circuit board assembly, the shielding effect of the circuit board assembly is increased, and the interference problem among various modules is improved, which well ensures that each module is not interfered.

[0035] The third embodiment of the present invention relates to a terminal, including the above-mentioned circuit board assembly.

[0036] Specifically, the terminal includes a mobile phone, a computer, a tablet, etc. When the terminal uses the above-mentioned circuit board assembly, the interference among the signals of each circuit board assembly in the terminal is improved, and the user experience of using the terminal is increased.

[0037] Those of ordinary skill in the art can understand that the above embodiments are specific embodiments for implementing the present invention, and in practical applications, various changes can be made in form and details without departing from the spirit and scope of the present invention.

Claims

1. A shielding cover, characterized in that, Comprising: A shielding outer cover and a shielding inner cover for fixing on a circuit board; The shielding inner cover includes a first top portion with an opening and a first side wall, and the first side wall extends from the periphery of the first top portion by a stretching process; The shielding outer cover includes a second top portion and a second side wall, and the second side wall extends from the periphery of the second top portion by the stretching process; the height of the first side wall is greater than or equal to the height of the second side wall; The shielding outer cover covers the shielding inner cover, the second top portion covers the opening, and the first side wall and the second side wall are in close contact; A plurality of buckle structures extend from the edge of the first side wall, and each buckle structure abuts against the outer surface of the second side wall; The buckle structure includes a connecting portion, a spring arm and an abutting portion connected in sequence, the connecting portion is connected to the edge of the first side wall, and the abutting portion abuts against the outer surface of the second side wall under the elastic force of the spring arm; Each buckle structure includes two connecting portions and two spring arms, and the abutting portion includes a first abutting portion and a second abutting portion; the connecting portion extends horizontally outward from the edge of the first side wall, the spring wall extends upward from the free end of the connecting portion and then extends obliquely toward the first side wall, the first abutting portion connects the two spring walls, the first abutting portion extends upward from the free ends of the two spring walls and obliquely away from the first side wall, and the second abutting portion extends downward from the free portion of the first abutting portion close to the two spring walls, and the second abutting portion abuts against the outer surface of the second side wall; A groove is formed in the outer surface of the second side wall at a position corresponding to the abutting portion, and the abutting portion abuts in the groove.

2. The shielding cover according to claim 1, characterized in that, The width of the second abutting portion is 1.5 mm to 2.0 mm.

3. The shielding case according to claim 1 or 2, characterized in that, A plurality of the buckle structures are evenly distributed on the edge of the first side wall.

4. A circuit board assembly, characterized in that, Including the shielding cover according to claims 1 to 3 above.

5. A terminal, characterized in that, Including the circuit board assembly according to claim 4 above.

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