Anti-interference set top box based on layered shielding structure

Abstract

The invention discloses an anti-interference set top box based on a layered shielding structure, which comprises a set top box body, four corners of the top end of the set top box body are provided with mounting ports, a first shielding assembly is clamped among the four mounting ports, and the top end of the first shielding assembly is slidably connected with a second shielding assembly. The first shielding assembly comprises a first shielding plate and a height plate, the middle part of the top end of the first shielding plate is fixedly connected with the bottom end of the height plate, and a second shielding plate is fixedly mounted at the top end of the height plate. When the set top box is used in a strong electromagnetic environment, a user assembles the second shielding assembly on the first shielding assembly through the first magnetic block and the second magnetic block, so that the shielding strength of the set top box on signal shielding is improved, and the integrity of important information transmission is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of set-top boxes, and specifically to an anti-interference set-top box based on a hierarchical shielding structure. Background Art

[0002] The core function of a set-top box is to convert the digital content of an external signal source into a format playable by a television, while expanding the interaction and intelligent functions of a traditional television. The set-top box receives digital signals from a cable, satellite antenna, broadband network, or terrestrial broadcast, and converts them into audio and video content recognizable by an analog television to achieve high-definition or 4K ultra-high-definition program playback, providing a digital / analog signal conversion function so that old analog televisions can also receive digital TV programs. The set-top box supports an Electronic Program Guide (EPG) to facilitate users in querying program schedules and content summaries. After the set-top box is connected to the Internet, it can realize online shopping, video-on-demand (VOD), gaming, web browsing, etc., turning the TV into an intelligent terminal. The set-top box supports the installation and operation of application software such as online education and fitness applications, expanding entertainment and life service scenarios. Some models of the set-top box have a storage function, which can save media files and play them through the TV. The set-top box supports wireless screen mirroring of devices such as mobile phones and tablets, such as Wi-Fi or Bluetooth connection, to achieve multi-screen sharing.

[0003] The application number is CN202021041800.5. The present utility model provides an anti-interference set-top box structure, including a box body. A circuit board and a shielding cover with a thickness of D are arranged inside the box body, and n heat dissipation strips are arranged on the shielding cover; a support vertical plate is fixed on each of the opposite inner walls of the box body, and the distance between the top surface of the support vertical plate and the top surface of the side plate of the box body is d, where d ≤ D, and the shielding cover is supported on all the support vertical plates. n card slots are arranged on each of the opposite outer walls of the box body; a grounding jack is arranged in the circuit board; an insulating buffer layer covers the bottom of the shielding cover, and a grounding conductive column is fixed at the bottom of the shielding cover, and the grounding conductive column is inserted and connected into the grounding jack; vertical clamping plates are fixed at both ends of the heat dissipation strip, and a buckle is fixed at the bottom of the vertical clamping plate. The present utility model can effectively shield the interference of electromagnetic signals, has strong anti-interference performance, good heat dissipation performance of the set-top box, and stable structure.

[0004] The application number is CN202120239172.X. The present utility model discloses a set-top box with a shielding and anti-interference function, which relates to the technical field of set-top boxes and aims to solve the problem of poor shielding and anti-interference effect of existing set-top boxes. Inside the set-top box, there is a PCBA main board and a hard disk. On the upper end of the PCBA main board, there are a CPU, a DDR, a FLASH chip, a WiFi module, and a tuner circuit. And a first shielding cover is arranged outside the CPU, the DDR, the FLASH chip, and the WiFi module. A second shielding cover is arranged outside the tuner circuit. A first heat sink is arranged above the PCBA main board, and a second heat sink is arranged below the PCBA main board. And the first shielding cover and the second shielding cover are both welded to the PCBA main board. The PCBA main board is connected to the first heat sink through a first conductive sponge, and the PCBA main board is connected to the second heat sink through a second conductive sponge. The first conductive sponge is adhesively connected to the first shielding cover, and the second conductive sponge is adhesively connected to the PCBA main board.

[0005] However, the set-top box in the above document still has the following disadvantages:

[0006] In the set-top box in the above document, the signal shielding intensity is fixed and unchanged, and in a strong electromagnetic environment, the signal transmission inside the set-top box is likely to be incomplete, unable to ensure the transmission of important information. Summary of the Invention

[0007] The purpose of the present invention is to provide an anti-interference set-top box based on a hierarchical shielding structure to solve the problem that the signal shielding intensity of the set-top box in the above background technology is fixed and unchanged, and in a strong electromagnetic environment, the signal transmission inside the set-top box is likely to be incomplete, unable to ensure the transmission of important information.

[0008] To achieve the above purpose, the present invention provides the following technical solution: An anti-interference set-top box based on a hierarchical shielding structure, including a set-top box body. Installation openings are provided at the four corners of the top of the set-top box body. A first shielding component is snap-fitted and installed between the four installation openings. A second shielding component is slidably connected to the top of the first shielding component. The first shielding component includes a first shielding plate and a height plate. The middle of the top of the first shielding plate is fixedly connected to the bottom end of the height plate. A second shielding plate is fixedly installed at the top end of the height plate. First magnets are fixedly installed on both sides of the bottom end of the second shielding plate. The second shielding component includes a first shielding shell and two second shielding shells. The two sides of the bottom end of the first shielding shell are respectively fixedly connected to the top ends of the two second shielding shells. A plurality of shielding openings are provided in the middle of the first shielding shell. A plurality of third shielding components are threadedly connected inside the plurality of shielding openings.

[0009] As a preferred technical solution of the present invention, mounting blocks are fixedly installed at the four corners of the bottom end of the first shielding plate. Length grooves are formed on one side of the four mounting blocks. Length shells extending to the outside are slidably connected inside the four length grooves. Silicone blocks are fixedly installed at one ends of the four length shells. One sides of the inner walls of the four length grooves are fixedly installed with connecting springs. One ends of the four connecting springs are fixedly connected to the opposite ends of the four length shells respectively. The four mounting blocks are respectively arranged corresponding to the four mounting openings. One sides of the inner walls of the four mounting openings are in contact connection with the ends of the four silicone blocks away from the length shells. When the mounting block slides into the mounting opening, the length shell slides along the length groove at this time, and the length shell squeezes the connecting spring from one side. The silicone block on the length shell is in frictional contact with the mounting opening, completing the connection between the first shielding component and the set-top box body.

[0010] As a preferred technical solution of the present invention, a plurality of symmetrically arranged metal rods are fixedly installed at the bottom end of the first shielding shell. Sliding blocks are fixedly installed at the bottom ends of the plurality of metal rods. The plurality of sliding blocks are all slidably connected to the first shielding plate. The metal rods are cupronickel, which has excellent shielding effect and welding performance.

[0011] As a preferred technical solution of the present invention, second magnetic blocks are fixedly installed at the top ends of the two second shielding shells. The two first magnetic blocks are magnetically connected to the two second magnetic blocks respectively. The second shielding component is magnetically fixed on the first magnetic block through the second magnetic block, completing the assembly of the second shielding component and the first shielding component.

[0012] As a preferred technical solution of the present invention, a plurality of the third shielding components each include a first shielding rod, a second shielding rod and a third shielding rod. One end of the first shielding rod is fixedly connected to one end of the second shielding rod. The other end of the second shielding rod is fixedly connected to one end of the third shielding rod. Grooves are formed at the other ends of the first shielding rod and the third shielding rod. The formation of the grooves facilitates the user to take the first shielding rod and the third shielding rod. The first shielding rod and the third shielding rod are both made of copper material. The second shielding rod is made of aluminum material. Copper has excellent electrical conductivity and electromagnetic shielding performance. The aluminum material is light in weight and low in cost, and has good electrical conductivity and certain electromagnetic shielding effect.

[0013] As a preferred technical solution of the present invention, both the first shielding rod and the third shielding rod are threadedly connected to the shielding opening. The third shielding component is installed on the shielding opening through the first shielding rod and the third shielding rod.

[0014] As a preferred technical solution of the present invention, a plurality of interfaces are provided on the front of the set-top box body, and a plurality of indicator lights are fixedly installed on the surface of the set-top box body. The indicator lights display the operating state of the set-top box body, and the user connects the set-top box body to an external device through the interfaces.

[0015] As a preferred technical solution of the present invention, support components are fixedly installed at the four corners of the bottom end of the set-top box body. The four support components each include a rubber pad and a support shell. The bottom end of the support shell is fixedly connected to the top end of the rubber pad. A support groove is provided at the top end of the support shell, and a height block is slidably connected inside the support groove. A spring shock absorber is fixedly installed at the bottom end of the inner wall of the support groove, and the top end of the spring shock absorber is fixedly connected to the bottom end of the height block. The top end of the height block is fixedly connected to the set-top box body. The support shell and the height block cooperate with each other to stably support the set-top box body from the bottom. The rubber pad is made of rubber material, and the installation of the rubber pad improves the stability of the set-top box body itself when placed.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. By providing the first shielding component, the second shielding component and the third shielding component, the first shielding component shields and protects from the outside of the set-top box. When the set-top box is used in a strong electromagnetic environment, the user assembles the second shielding component on the first shielding component through the first magnetic block and the second magnetic block, improving the shielding strength of the set-top box for signal shielding and ensuring the integrity of important information transmission;

[0018] 2. By providing the second shielding component and the third shielding component, through the installation port, the first shielding rod and the third shielding rod, the user rotates the shielding rod to assemble the third shielding component on the second shielding component, improving the shielding effect of the second shielding component on the signal. Description of the Drawings

[0019] Figure 1 It is a side view of the present invention;

[0020] Figure 2 It is a cross-sectional view of the present invention;

[0021] Figure 3 It is a three-dimensional view of the first shielding component of the present invention;

[0022] Figure 4 It is a cross-sectional view of the first shielding component of the present invention;

[0023] Figure 5 It is a connection diagram of the second shielding component and the shielding port of the present invention;

[0024] Figure 6 It is a three-dimensional view of the third shielding component of the present invention.

[0025] In the figure: 1, set-top box body; 2, support component; 21, rubber pad; 22, support shell; 23, height block; 24, spring shock absorber; 25, support groove; 3, interface; 4, indicator light; 5, first shielding component; 51, first shielding plate; 52, mounting block; 53, length shell; 54, silica gel block; 55, height plate; 56, second shielding plate; 57, first magnetic block; 58, length groove; 59, connecting spring; 6, second shielding component; 61, first shielding shell; 62, metal rod; 63, sliding block; 64, second shielding shell; 65, second magnetic block; 7, third shielding component; 71, first shielding rod; 72, second shielding rod; 73, third shielding rod; 74, groove; 8, mounting opening; 9, shielding opening. Detailed implementation manner

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. 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.

[0027] Please refer to Figures 1-6 , the present invention provides an anti-interference set-top box based on a hierarchical shielding structure, including a set-top box body 1. Mounting openings 8 are provided at the four corners of the top of the set-top box body 1. A first shielding component 5 is snap-fitted and installed between the four mounting openings 8. A second shielding component 6 is slidably connected to the top of the first shielding component 5. The first shielding component 5 includes a first shielding plate 51 and a height plate 55. The middle of the top of the first shielding plate 51 is fixedly connected to the bottom of the height plate 55. A second shielding plate 56 is fixedly installed at the top of the height plate 55. First magnetic blocks 57 are fixedly installed on both sides of the bottom of the second shielding plate 56. The second shielding component 6 includes a first shielding shell 61 and two second shielding shells 64. The two sides of the bottom of the first shielding shell 61 are respectively fixedly connected to the tops of the two second shielding shells 64. A plurality of shielding openings 9 are provided in the middle of the first shielding shell 61. A plurality of third shielding components 7 are threadedly connected inside the plurality of shielding openings 9.

[0028] At the four corners of the bottom end of the first shielding plate 51, mounting blocks 52 are fixedly installed. On one side of each of the four mounting blocks 52, a length groove 58 is formed. Inside each of the four length grooves 58, a length shell 53 extending to the outside is slidably connected. At one end of each of the four length shells 53, a silica gel block 54 is fixedly installed. On one side of the inner wall of each of the four length grooves 58, a connecting spring 59 is fixedly installed. One end of each of the four connecting springs 59 is fixedly connected to the corresponding end of each of the four length shells 53. The four mounting blocks 52 are respectively arranged corresponding to the four mounting openings 8. One end of each of the four silica gel blocks 54 away from the length shell 53 is in contact connection with one side of the inner wall of each of the four mounting openings 8. When the mounting block 52 slides into the mounting opening 8, at this time, the length shell 53 slides along the length groove 58, and the length shell 53 squeezes the connecting spring 59 from one side. The silica gel block 54 on the length shell 53 is in frictional contact with the mounting opening 8, completing the connection between the first shielding assembly 5 and the set-top box body 1.

[0029] At the bottom end of the first shielding shell 61, a plurality of symmetrically arranged metal rods 62 are fixedly installed. At the bottom end of each of the plurality of metal rods 62, a sliding block 63 is fixedly installed. Each of the plurality of sliding blocks 63 is slidably connected to the first shielding plate 51. The metal rod 62 is cupronickel, which has excellent shielding effect and welding performance.

[0030] At the top end of each of the two second shielding shells 64, a second magnetic block 65 is fixedly installed. The two first magnetic blocks 57 are respectively magnetically connected to the two second magnetic blocks 65. The second shielding assembly 6 is magnetically fixed on the first magnetic block 57 through the second magnetic block 65, completing the assembly of the second shielding assembly 6 and the first shielding assembly 5.

[0031] Each of the plurality of third shielding assemblies 7 includes a first shielding rod 71, a second shielding rod 72 and a third shielding rod 73. One end of the first shielding rod 71 is fixedly connected to one end of the second shielding rod 72. The other end of the second shielding rod 72 is fixedly connected to one end of the third shielding rod 73. At the other ends of the first shielding rod 71 and the third shielding rod 73, grooves 74 are formed. The formation of the grooves 74 facilitates the user to take the first shielding rod 71 and the third shielding rod 73. Both the first shielding rod 71 and the third shielding rod 73 are made of copper material, and the second shielding rod 72 is made of aluminum material. Copper has excellent electrical conductivity and electromagnetic shielding performance, and aluminum material is lightweight and low-cost, having good electrical conductivity and certain electromagnetic shielding effect.

[0032] Both the first shielding rod 71 and the third shielding rod 73 are threadedly connected to the shielding opening 9. The third shielding assembly 7 is installed on the shielding opening 9 through the first shielding rod 71 and the third shielding rod 73.

[0033] On the front of the set-top box body 1, several interfaces 3 are provided. On the surface of the set-top box body 1, several indicator lights 4 are fixedly installed. The indicator lights 4 display the operating state of the set-top box body 1. The user connects the set-top box body 1 to an external device through the interface 3.

[0034] At the four corners of the bottom end of the set-top box body 1, four support components 2 are fixedly installed. The four support components 2 each include a rubber pad 21 and a support shell 22. The bottom end of the support shell 22 is fixedly connected to the top end of the rubber pad 21. A support groove 25 is provided at the top end of the support shell 22. A height block 23 is slidably connected inside the support groove 25. At the bottom end of the inner wall of the support groove 25, a spring damper 24 is fixedly installed. The top end of the spring damper 24 is fixedly connected to the bottom end of the height block 23. The top end of the height block 23 is fixedly connected to the set-top box body 1. The support shell 22 and the height block 23 cooperate to stably support the set-top box body 1 from the bottom. The rubber pad 21 is made of rubber material, and the installation of the rubber pad 21 improves the stability of the set-top box body 1 itself when placed.

[0035] In the present invention, when the installation block 52 slides into the installation opening 8, at this time, the length shell 53 slides along the length groove 58, and the length shell 53 presses the connecting spring 59 from one side. The silica gel block 54 on the length shell 53 is in frictional contact with the installation opening 8, completing the connection of the first shielding component 5 to the set-top box body 1. The first shielding plate 51 and the second shielding plate 56 perform signal shielding from the top of the set-top box body 1. The second shielding component 6 is magnetically fixed on the first magnet 57 through the second magnet 65, completing the assembly of the second shielding component 6 and the first shielding component 5. The metal rod 62 is cupronickel, which has excellent shielding effect and welding performance. The first shielding shell 61 and the second shielding shell 64 perform secondary shielding from the outside of the set-top box body 1. The opening of the groove 74 facilitates the user to take the first shielding rod 71 and the third shielding rod 73. Both the first shielding rod 71 and the third shielding rod 73 are made of copper material, and the second shielding rod 72 is made of aluminum material. Copper has excellent electrical conductivity and electromagnetic shielding performance, and aluminum material is lightweight and low-cost, having good electrical conductivity and a certain electromagnetic shielding effect.

[0036] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An anti-interference set-top box based on a hierarchical shielding structure, comprising a set-top box body (1), characterized in that: At the four corners of the top of the set-top box body (1), installation openings (8) are provided. A first shielding component (5) is snap-fitted and installed between the four installation openings (8). A second shielding component (6) is slidably connected to the top of the first shielding component (5). The first shielding component (5) includes a first shielding plate (51) and a height plate (55). The middle of the top of the first shielding plate (51) is fixedly connected to the bottom end of the height plate (55). A second shielding plate (56) is fixedly installed at the top of the height plate (55). First magnets (57) are fixedly installed on both sides of the bottom end of the second shielding plate (56). The second shielding component (6) includes a first shielding shell (61) and two second shielding shells (64). The two sides of the bottom end of the first shielding shell (61) are respectively fixedly connected to the tops of the two second shielding shells (64). A plurality of shielding openings (9) are provided in the middle of the first shielding shell (61). A plurality of third shielding components (7) are threadedly connected inside the plurality of shielding openings (9).

2. The anti-interference set-top box based on a hierarchical shielding structure according to claim 1, wherein: Installation blocks (52) are fixedly installed at the four corners of the bottom end of the first shielding plate (51). A length groove (58) is provided on one side of each of the four installation blocks (52). A length shell (53) extending to the outside is slidably connected inside each of the four length grooves (58). A silica gel block (54) is fixedly installed at one end of each of the four length shells (53). A connecting spring (59) is fixedly installed on one side of the inner wall of each of the four length grooves (58). One end of each of the four connecting springs (59) is fixedly connected to the corresponding end of each of the four length shells (53). The four installation blocks (52) are respectively arranged corresponding to the four installation openings (8). The ends of the four silica gel blocks (54) away from the length shells (53) are respectively in contact connection with one side of the inner wall of the four installation openings (8).

3. The anti-interference set-top box based on a hierarchical shielding structure according to claim 1, characterized in that: A plurality of symmetrically arranged metal rods (62) are fixedly installed at the bottom end of the first shielding shell (61). A sliding block (63) is fixedly installed at the bottom end of each of the plurality of metal rods (62). Each of the plurality of sliding blocks (63) is slidably connected to the first shielding plate (51).

4. The anti-interference set-top box based on a hierarchical shielding structure according to claim 1, characterized in that: Second magnets (65) are fixedly installed at the tops of the two second shielding shells (64). The two first magnets (57) are magnetically connected to the two second magnets (65) respectively.

5. The anti-interference set-top box based on a hierarchical shielding structure according to claim 1, wherein: Each of the plurality of third shielding components (7) includes a first shielding rod (71), a second shielding rod (72), and a third shielding rod (73). One end of the first shielding rod (71) is fixedly connected to one end of the second shielding rod (72). The other end of the second shielding rod (72) is fixedly connected to one end of the third shielding rod (73). Grooves (74) are provided at the other ends of the first shielding rod (71) and the third shielding rod (73).

6. The anti-interference set-top box based on a hierarchical shielding structure according to claim 5, characterized in that: The first shielding rod (71) and the third shielding rod (73) are both threadedly connected to the shielding opening (9).

7. The anti-interference set-top box based on a hierarchical shielding structure according to claim 1, characterized in that: A plurality of interfaces (3) are provided on the front surface of the set-top box body (1). A plurality of indicator lights (4) are fixedly installed on the surface of the set-top box body (1).

8. The anti-interference set-top box based on a hierarchical shielding structure according to claim 1, wherein: Four corners at the bottom end of the set-top box body (1) are fixedly installed with support components (2). The four support components (2) each include a rubber pad (21) and a support shell (22). The bottom end of the support shell (22) is fixedly connected to the top end of the rubber pad (21). A support groove (25) is formed at the top end of the support shell (22). A height block (23) is slidably connected inside the support groove (25). A spring shock absorber (24) is fixedly installed at the bottom end of the inner wall of the support groove (25). The top end of the spring shock absorber (24) is fixedly connected to the bottom end of the height block (23). The top end of the height block (23) is fixedly connected to the set-top box body (1).

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