A structure and electronic device for reducing USB noise interference

Abstract

The embodiment of the present invention discloses a structure and electronic device for reducing USB noise interference, which is used to solve the technical problem that the noise interference generated when the existing USB3.0 is working seriously affects the normal use of wireless devices. The embodiment of the present invention includes a metal shell, a metal shielding cover, a conductive member, and a circuit board with a USB interface; the metal shielding cover is arranged inside the metal shell, and the metal shielding cover and the metal shell form a shielding space, and the circuit board is arranged in the shielding space; the circuit board, the metal shielding cover, and the metal shell are overlapped by the conductive member. In this embodiment, the metal shielding cover can prevent the noise generated by the circuit board from overflowing and spreading, and the circuit board, the metal shielding cover and the metal shell are overlapped by the conductive member to form a complete area of ​​equipotential, so as to avoid the noise from forming an antenna effect between metals with unequal potentials, so as to cause secondary radiation of the noise, thereby effectively reducing the USB noise interference.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic equipment structure design, and in particular to a structure and electronic equipment for reducing USB noise interference. Background Art

[0002] At present, the USB3.0 interface is basically a must-have configuration for laptop products. However, when USB3.0 is in use, it will increase the noise by about 30dB in the 2.4G frequency band, causing radio frequency interference to the 2.4GHz ISM frequency band. Furthermore, the noise generated by the USB3.0 circuit board will generate secondary radiation on the surface of the metal casing of the electronic equipment and the ungrounded areas such as the internal keyboard bracket and the shaft (similar to the antenna effect) and form a parallel plate effect between the internal metal to enhance the noise. This noise interference will reduce the sensitivity of wireless reception, thereby reducing the reception range, affecting the normal use of wireless devices such as wireless mice, wireless keyboards, and wireless headphones, and reducing the user experience.

[0003] Therefore, finding a structure that can reduce USB noise interference has become an important topic studied by those skilled in the art. Summary of the invention

[0004] The embodiment of the invention discloses a structure and electronic device for reducing USB noise interference, which are used to solve the technical problem that the noise interference generated during the operation of the existing USB3.0 seriously affects the normal use of wireless devices.

[0005] The embodiment of the present invention provides a structure for reducing USB noise interference, including a metal housing, a metal shielding cover, a conductive member, and a circuit board with a USB interface;

[0006] The metal shielding cover is arranged inside the metal shell, and the metal shielding cover and the metal shell form a shielding space, and the circuit board is arranged in the shielding space;

[0007] The circuit board, the metal shielding cover and the metal shell are overlapped by the conductive member.

[0008] Optionally, the conductive member can be movably moved on the circuit board, the metal shielding cover and the metal shell.

[0009] Optionally, the metal shielding cover is an integrated structure.

[0010] Optionally, the metal shielding cover includes a metal support and a plurality of metal plates arranged on the metal support;

[0011] The metal support is located below the circuit board, and a plurality of metal plates are arranged around the circuit board;

[0012] The circuit board, the metal support and the metal shell are overlapped by the conductive member.

[0013] Optionally, a plastic support member is further provided between the metal support member and the metal shell;

[0014] The plastic support component covers the bottom inner side wall of the metal shell, and the metal support component is arranged on the top surface of the plastic support component.

[0015] Optionally, the end of the metal support is bent to form a contact portion;

[0016] The contact portion abuts against the metal housing.

[0017] Optionally, at least one USB interface is provided on the circuit board, and the USB interface is exposed on the metal shell.

[0018] Optionally, the number of the conductive members is at least two.

[0019] Optionally, the USB interface is a USB 3.0 interface.

[0020] An embodiment of the present invention provides a structure for reducing USB noise interference, including the above-mentioned structure for reducing USB noise interference.

[0021] It can be seen from the above technical solutions that the embodiments of the present invention have the following advantages:

[0022] In this embodiment, the metal shielding cover can prevent the noise generated by the circuit board from overflowing and spreading, and the circuit board, the metal shielding cover and the metal shell are overlapped by conductive parts to form a complete area of ​​equipotential, thereby preventing the noise from forming an antenna effect between metals with unequal potentials, causing secondary radiation of the noise, thereby effectively reducing USB noise interference. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 A side schematic diagram of a structure for reducing USB noise interference provided by the present invention;

[0025] Figure 2 A top view of a structure for reducing USB noise interference provided by the present invention;

[0026] Illustration: circuit board 1, USB interface 101; metal support 2; contact portion 201; metal shell 3; conductive member 4; plastic support 5; metal plate 6. DETAILED DESCRIPTION

[0027] The embodiment of the invention discloses a structure and electronic device for reducing USB noise interference, which are used to solve the technical problem that the noise interference generated during the operation of the existing USB3.0 seriously affects the normal use of wireless devices.

[0028] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] Embodiment 1

[0030] See also Figure 1 and Figure 2 , a structure for reducing USB noise interference provided in this embodiment includes:

[0031] A metal shell 3, a metal shielding cover, a conductive member 4 and a circuit board 1 with a USB interface 101;

[0032] The metal shielding cover is arranged inside the metal shell 3, and the metal shielding cover and the metal shell 3 form a shielding space, and the circuit board 1 is arranged in the shielding space;

[0033] The circuit board 1 , the metal shielding cover, and the metal shell 3 are overlapped by the conductive member 4 .

[0034] In this embodiment, the metal shielding cover can prevent the noise generated by the circuit board 1 from overflowing and spreading, and the circuit board 1, the metal shielding cover and the metal shell 3 are overlapped by the conductive member 4 to form a complete area of ​​equipotential, thereby preventing the noise from forming an antenna effect between metals with unequal potentials, causing secondary radiation of the noise, thereby effectively reducing USB noise interference.

[0035] Furthermore, the conductive member 4 can movably move on the circuit board 1 , the metal shielding cover and the metal shell 3 .

[0036] It should be noted that, from the above content, the position of the conductive member 4 can be adjusted, specifically, as Figure 1As shown, the adjustment method is to slide the conductive member 4 to the left or right; by adjusting the position of the conductive member 4, the overlapping positions of the circuit board 1, the metal shielding cover and the metal shell 3 with the conductive member 4 are changed, so that a phase difference of 180° or an integer multiple thereof can be generated between the noise phases, thereby canceling out the energy between the noises and reducing the interference ability of the noises.

[0037] Optionally, the metal shielding cover in this embodiment is an integrated structure.

[0038] It should be noted that the metal shielding cover can adopt an integrated structure, such as a metal shielding cover with a rectangular structure or a bowl-shaped structure. This embodiment does not limit the specific structure of the metal shielding cover. Designers can choose a metal shielding cover with a suitable shape and structure according to specific actual conditions.

[0039] Optionally, the metal shield in this embodiment may be a split structure, which specifically includes a metal support 2 and a plurality of metal plates 6 disposed on the metal support 2;

[0040] like Figure 1 and Figure 2 As shown, the metal support 2 is located below the circuit board 1, and multiple metal plates 6 are arranged around the circuit board 1. Specifically, one of the metal plates 6 is located on the right side of the circuit board 1, and another metal plate 6 is located on the rear side of the circuit board 1. The top inner wall of the metal shell 3 is located above the circuit board 1, the left inner wall of the metal shell 3 is located on the left side of the circuit board 1, and the front inner wall of the metal shell 3 is located on the front side of the circuit board 1. Through the above design, the metal support 2, the metal plate 6 and the metal shell 3 form a shielding cover to prevent the noise of the circuit board 1 from overflowing and spreading.

[0041] The circuit board 1 , the metal support member 2 , and the metal shell 3 are overlapped by the conductive member 4 .

[0042] Furthermore, a plastic support member 5 is provided between the metal support member 2 and the metal shell 3;

[0043] The plastic support member 5 covers the bottom inner wall of the metal shell 3 , and the metal support member 2 is disposed on the top surface of the plastic support member 5 .

[0044] It should be noted that the plastic support 5 is used to fill the internal space of the metal shell 3. When the plastic support 5 exists, a through hole needs to be opened on the plastic support 5 for the conductive member 4 to pass through, so that the conductive member 4 can be overlapped with the metal shell 3, the metal support 2 and the circuit board 1.

[0045] Furthermore, the end of the metal support member 2 is bent to form a contact portion 201;

[0046] The contact portion 201 abuts against the metal housing 3 .

[0047] It should be noted that the contact portion 201 of the metal support 2 abuts against the metal shell 3 to ensure that the potentials of the two are equal.

[0048] Furthermore, at least one USB interface 101 is disposed on the circuit board 1 , and the USB interface 101 is exposed outside the metal shell 3 .

[0049] It should be noted that the USB interface 101 is for connection with an external USB connector, and the USB interface 101 in this embodiment is a USB 3.0 interface.

[0050] Furthermore, the conductive member 4 is a conductive sponge.

[0051] It should be noted that the specific type of the conductive member 4 in this embodiment can be changed according to the needs of the designer. In this example, conductive sponge is preferably used.

[0052] Furthermore, the number of the conductive members is at least two.

[0053] It should be noted that, in this embodiment, at least two conductive members are preferably used, and as the number of conductive members increases, the effect of reducing USB noise interference is more significant.

[0054] Embodiment 2

[0055] See also Figure 1 and Figure 2 This embodiment provides an electronic device, including the structure for reducing USB noise interference in embodiment one.

[0056] Specifically, the electronic device described in this embodiment is a laptop computer, a smart phone, a tablet computer, or the like.

[0057] This embodiment takes a laptop computer as a specific example to specifically illustrate the structure of the electronic device of this embodiment;

[0058] The motherboard outer shell of the laptop computer is the metal shell 3 in this embodiment. The circuit board 1 with the USB interface 101 is located inside the metal shell 3. A metal support 2 is arranged below the circuit board 1. The metal support 2 is used to support the keyboard. There are two metal plates 6 on the metal support 2, one of which is the metal plate 6 of the laptop computer fan assembly, and the other is the metal plate 6 of the laptop computer battery assembly. The two metal plates 6 are respectively located on the right side and the rear side of the circuit board 1. The top inner wall of the metal shell 3 is located above the circuit board 1, the left inner wall of the metal shell 3 is located on the left side of the circuit board 1, and the front inner wall of the metal shell 3 is located on the front side of the circuit board 1. The circuit board 1, the metal support 2 and the metal shell 3 are overlapped by the conductive member 4 to form a complete area of ​​equipotential, so as to avoid the noise from forming an antenna effect between metals with unequal potentials so as to cause secondary radiation of the noise, thereby effectively reducing the USB noise interference, and thus enabling the wireless device to be used normally.

[0059] The above is a detailed introduction to a structure for reducing USB noise interference provided by the present invention. For those skilled in the art, according to the concept of the embodiments of the present invention, there may be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A structure for reducing USB noise interference, characterized in that: It includes a metal shell, a metal shielding cover, a conductive part and a circuit board with a USB interface; The metal shielding cover is arranged inside the metal shell, and the metal shielding cover and the metal shell form a shielding space, and the circuit board is arranged in the shielding space; The circuit board, the metal shielding cover, and the metal shell are overlapped by the conductive member; The conductive member can movably move on the circuit board, the metal shielding cover and the metal shell.

2. The structure for reducing USB noise interference according to claim 1, characterized in that: The metal shielding cover is an integrated structure.

3. The structure for reducing USB noise interference according to claim 1, characterized in that: The metal shielding cover comprises a metal support and a plurality of metal plates arranged on the metal support; The metal support is located below the circuit board, and a plurality of metal plates are arranged around the circuit board; The circuit board, the metal support member and the metal shell are overlapped by the conductive member.

4. The structure for reducing USB noise interference according to claim 3, characterized in that: A plastic support is also provided between the metal support and the metal shell; The plastic support component covers the bottom inner side wall of the metal shell, and the metal support component is arranged on the top surface of the plastic support component.

5. The structure for reducing USB noise interference according to claim 3, characterized in that: The end of the metal support is bent to form a contact portion; The contact portion abuts against the metal housing.

6. The structure for reducing USB noise interference according to claim 1, characterized in that: At least one USB interface is arranged on the circuit board, and the USB interface is exposed outside the metal shell.

7. The structure for reducing USB noise interference according to claim 1, characterized in that: The number of the conductive members is at least two.

8. The structure for reducing USB noise interference according to claim 1, characterized in that: The USB interface is a USB 3.0 interface.

9. An electronic device, characterized in that: The invention comprises a structure for reducing USB noise interference as claimed in any one of claims 1 to 8.

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