Electromagnetic shielding structure and notebook computer

Abstract

The utility model provides an electromagnetic shielding structure and a notebook computer. The notebook computer comprises a system end and a display end, and an air inlet and outlet is formed in the rear side of the system end. The electromagnetic shielding structure comprises a plurality of shielding plates which are arranged at an air inlet and an air outlet of a system end, the shielding plates can rotate relative to the system end to have a closed state and an open state, the shielding plates are arranged side by side in the closed state and form a shielding retaining wall to seal the air inlet and the air outlet, and the shielding plates can rotate relative to the system end when the shielding plates are in the open state. A gap communicated with the air inlet and outlet is formed between every two adjacent shielding plates; and the adjusting mechanism is respectively connected with the plurality of shielding plates and is used for driving the plurality of shielding plates to be switched between the closed state and the open state and keeping the plurality of shielding plates at the switched positions. According to the electromagnetic shielding structure, a user can flexibly adjust the heat dissipation performance according to actual requirements, the influence of the mainboard on the antenna performance can be well reduced, and the network experience of the user is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electronic equipment, and in particular relates to an electromagnetic shielding structure and a notebook computer with the electromagnetic shielding structure. Background Art

[0002] With the progress and development of the times, the use scenarios of laptops are becoming more and more extensive, so that laptops have experienced many important technological advances, and users' configuration requirements for laptops are also constantly evolving and improving. Currently, most laptops on the market are made of metal, and the antenna placement is very poor. If placed in a plastic hinge structure, the noise on the motherboard can directly affect the antenna performance, resulting in signal attenuation, signal loss, and unstable network connection, which reduces the user's experience of the network.

[0003] Existing solutions: Solution 1, fully enclosed air inlet and outlet; Solution 2, fully open air inlet and outlet. Although the fully enclosed air inlet and outlet design can avoid the influence of the mainboard on the antenna performance, it is not conducive to heat dissipation; the fully open air inlet and outlet design can meet the heat dissipation requirements, but there is no shielding measure between the antenna and the mainboard, and the mainboard affects the performance of the antenna. Utility Model Content

[0004] In view of the above technical problems existing in the prior art, the embodiments of the utility model provide an electromagnetic shielding structure and a notebook computer having the electromagnetic shielding structure.

[0005] The technical solution adopted in the embodiment of the utility model is: an electromagnetic shielding structure, used on a laptop computer, the laptop computer includes a system end and a display end, and an air inlet and outlet are arranged on the rear side of the system end close to the display end; the electromagnetic shielding structure includes:

[0006] A plurality of shielding plates are arranged at the air inlet and outlet of the system end, and the plurality of shielding plates can rotate relative to the system end to have a closed state and an open state. When the plurality of shielding plates are in the closed state, they are arranged side by side and form a shielding baffle wall to cover the air inlet and outlet. When the plurality of shielding plates are in the open state, a gap communicating with the air inlet and outlet is formed between two adjacent shielding plates;

[0007] The adjusting mechanism is connected to the plurality of shielding plates respectively, and is used for driving the plurality of shielding plates to switch between the closed state and the open state, and keeping the plurality of shielding plates in the switched position.

[0008] In an optional embodiment, the adjustment mechanism includes:

[0009] A plurality of first connecting bars, wherein the plurality of first connecting bars are arranged in parallel and one end of the first connecting bars is connected to the first ends of the plurality of shielding plates on the same side in a one-to-one correspondence;

[0010] A roller, the roller is rotatably disposed on the system end and is provided with external teeth;

[0011] A transmission belt, the transmission belt passes around the roller, the other ends of the plurality of first connecting strips are connected to the transmission belt, and the transmission belt is provided with a tooth portion meshing with the roller;

[0012] When the roller is rotated, the transmission belt can be driven to rotate, thereby pulling the plurality of first connecting strips to move, so that the plurality of shielding plates rotate synchronously and switch between the closed state and the open state.

[0013] In an optional embodiment, an opening adapted to the roller is provided on the housing of the system end, and the roller can be exposed to the system end through the opening.

[0014] In an optional embodiment, the adjustment mechanism includes:

[0015] A plurality of second connecting bars, wherein the plurality of second connecting bars are arranged in parallel and one end of the second connecting bars is connected one by one to the first ends of the plurality of shielding plates located on the same side;

[0016] An arc-shaped convex ridge, wherein the arc-shaped convex ridge is arranged around the outer circumference of the rotating shaft;

[0017] A first connecting line, wherein the first connecting line passes through the plurality of the second connecting strips in sequence and is connected to the arcuate ridge. When the display end is opened or closed relative to the system end to drive the shaft to rotate, the arcuate ridge rotates with the shaft and pulls the first connecting line and the plurality of the second connecting strips to move, so that the plurality of shielding plates rotate synchronously and switch between the closed state and the open state.

[0018] In an optional embodiment, a plurality of convex points are provided on the arc-shaped ridge at intervals along its extension direction, and each of the convex points corresponds to the rotation angle of the shaft, so that the convex points are used to represent the opening angles of the plurality of shielding plates.

[0019] In an optional embodiment, a through hole is provided on the outer shell of the system end, and when the rotating shaft rotates, the protrusions can enter and exit the through hole in sequence.

[0020] In an optional embodiment, the electromagnetic shielding structure further includes a second connecting line, which sequentially passes through the second ends of the plurality of shielding plates located on the same side, and both ends of the second connecting line are respectively connected to the system end.

[0021] In an optional embodiment, heat dissipation holes are respectively provided on the plurality of shielding plates; the heat dissipation holes are in a circular, rectangular or slit-shaped shape extending along the length direction of the shielding plates.

[0022] In an optional embodiment, the shielding plate is made of metal; and the first connecting wire is a metal wire.

[0023] A laptop computer comprises a display terminal and a system terminal, wherein the display terminal is rotatably connected to the system terminal via a rotating shaft, and an air inlet and outlet are arranged on the rear side of the system terminal rotatably connected to the display terminal. The laptop computer further comprises the electromagnetic shielding structure of any of the above embodiments, wherein the electromagnetic shielding structure is arranged at the air inlet and outlet of the system terminal and is used to control the opening and closing of the air inlet and outlet.

[0024] Compared with the prior art, the beneficial effects of the embodiments of the utility model are: the electromagnetic shielding structure of the utility model enables users to flexibly adjust the heat dissipation performance according to actual needs, and can greatly improve the user's network connectivity, thereby improving the user's network experience.

[0025] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not intended to restrict the present invention.

[0026] The overview of various implementations or examples of the technology described in this utility model is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In the drawings, which are not necessarily drawn to scale, the same reference numerals may describe similar components in different views. The drawings generally illustrate various embodiments by way of example and not limitation, and together with the description and claims, serve to illustrate the disclosed embodiments. When appropriate, the same reference numerals are used throughout the drawings to refer to the same or similar parts. Such embodiments are illustrative and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method.

[0028] Figures 1 to 4 They are schematic structural diagrams of different viewing angles of the electromagnetic shielding structure of an embodiment of the utility model applied to a laptop computer.

[0029] Figure 5 for Figure 1 Enlarged view of part A.

[0030] Figure 6 for Figure 1 Magnified view of part B.

[0031] Figure 7 for Figure 1 Magnified view of part C.

[0032] Figure 8 for Figure 1 Magnified view of part D.

[0033] Fig. 9 for Figure 1 Enlarged view of part E.

[0034] Fig.10 for Figure 1 Enlarged view of part F.

[0035] Fig.11 This is another structural schematic diagram of the electromagnetic shielding structure of an embodiment of the utility model applied to a notebook computer.

[0036] Fig.12 This is a comparison chart of simulation experiment results.

[0037] Reference numerals:

[0038] 1-shielding plate; 2-heat dissipation hole; 3-first connecting strip; 4-roller; 5-transmission belt; 6-second connecting strip; 7-arc-shaped ridge; 8-first connecting line; 9-bump; 10-second connecting line; 11-system end; 12-air inlet and outlet; 13-display end; 14-rotating shaft. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0041] In order to keep the following description of the embodiments of the present invention clear and concise, the present invention omits detailed descriptions of known functions and known components.

[0042] like Figures 1 to 11 As shown, an embodiment of the utility model provides an electromagnetic shielding structure, which is used on a laptop computer. The laptop computer includes a system end 11 and a display end 13 rotatably connected by a rotating shaft 14, and an air inlet and outlet 12 is arranged on the rear side of the system end 11 close to the display end 13, that is, the air inlet and outlet 12 is arranged between the top cover of the system end 11 and the side of the base close to the display end 13.

[0043] The electromagnetic shielding structure includes multiple shielding plates 1 and an adjustment mechanism. The multiple shielding plates 1 are arranged at the air inlet and outlet 12 of the system end 11. The multiple shielding plates 1 can rotate relative to the system end 11 to have a closed state and an open state. When the multiple shielding plates 1 are in the closed state, they are arranged side by side and form a shielding baffle to cover the air inlet and outlet 12. When the multiple shielding plates 1 are in the open state, a gap connected to the air inlet and outlet 12 is formed between two adjacent shielding plates 1, and the gap forms a heat dissipation channel. The adjustment mechanism is connected to the multiple shielding plates 1 respectively, and is used to drive the multiple shielding plates 1 to switch between the closed state and the open state, and keep the multiple shielding plates 1 in the switched position.

[0044] The size of the shielding plate 1 can be 294.8mm long, 1.7mm wide, and 0.5mm thick. By overlapping several shielding plates 1 together, a complete shielding barrier can be formed to prevent the noise on the mainboard from directly affecting the antenna performance, and can be opened to meet the heat dissipation requirements.

[0045] The electromagnetic shielding structure of the embodiment of the utility model can not only cover the air inlet and outlet 12 of the system end 11 of the laptop computer to prevent the motherboard of the system end 11 from generating electromagnetic interference to the antenna placed in the shaft 14 and affecting the antenna performance, but also open the air inlet and outlet 12 for heat dissipation, so that the user can flexibly adjust the heat dissipation performance of the laptop computer according to actual needs to adapt to different heat dissipation requirements, and can greatly improve the user's network connectivity and enhance the user's network experience.

[0046] The shielding plate 1 is made of a material having an electromagnetic shielding effect, for example, a metal plate. Metal has a good shielding effect on electromagnetic interference and has sufficient rigidity and durability.

[0047] The specific structure of the adjustment mechanism is not limited and can be selected and determined as needed, as long as it can control the rotation of the plurality of shielding plates 1 to open or close the air inlet and outlet 12. The different structures of the adjustment mechanism are described below in the manner of Embodiment 1 and Embodiment 2.

[0048] Embodiment 1

[0049] like Figure 5 to Figure 6 and Figures 9 and 10 As shown, the adjustment mechanism includes a plurality of first connecting strips 3, a roller 4 and a transmission belt 5. The plurality of first connecting strips 3 are arranged in parallel and one end thereof is connected to the first ends of the plurality of shielding plates 1 on the same side in a one-to-one correspondence. The roller 4 is rotatably arranged on the system end 11 and is provided with external teeth. The transmission belt 5 passes around the roller 4, and the other ends of the plurality of first connecting strips 3 are respectively connected to the transmission belt 5 at intervals, that is, the transmission belt 5 is a closed annular structure, and the transmission belt 5 is in a taut state. The transmission belt 5 is provided with a tooth portion meshing with the roller 4, so that when the roller 4 is rotated, the roller 4 can drive the transmission belt 5 to rotate, and the transmission belt 5 then pulls the plurality of first connecting strips 3 to move, so that the plurality of shielding plates 1 rotate synchronously and switch between the closed state and the open state.

[0050] It is understandable that the first connecting strip 3 is a structure with a certain rigidity, rather than a soft body, so as to drive the shielding plate 1 to rotate under the pulling action of the transmission belt 5. The material of the first connecting strip 3 can be the same as that of the shielding plate 1. For example, the first connecting strip 3 can be formed by extending outward from the first end of the shielding plate 1.

[0051] In an optional embodiment, an opening adapted to the roller 4 is provided on the housing of the system end 11, and the roller 4 can be exposed to the system end 11 through the opening, so that the user can control the rotation of the roller 4 to adjust the opening angle of the shielding plate 1. Specifically, a hole can be opened on the top cover of the system end 11 of the laptop computer near the shaft 14 to place the roller 4, and the radius of the roller 4 is less than or equal to 4 mm. The user can roll up and down according to his own needs to control the rotation angle of the shielding plate 1, thereby adjusting the gap between two adjacent shielding plates 1.

[0052] The electromagnetic shielding structure of the first embodiment is similar to the structure of a shutter. The shielding plate 1 rotates to an open state or a closed state under the pulling action of the transmission belt 5, and the rotation angle of the shielding plate 1 can be controlled by adjusting the rotation angle of the roller 4, thereby changing the opening degree of the shielding plate 1 and controlling the width of the heat dissipation channel to achieve the best heat dissipation effect. An angle scale can be set on the wheel surface of the roller 4, or an angle scale can be set on the housing near the opening, and a pointer can be set on the roller 4, and the user can intuitively understand the opening degree of the shielding plate 1 by observing the scale.

[0053] Embodiment 2

[0054] like Fig.11As shown, the adjustment mechanism includes a plurality of second connecting strips 6, arcuate ridges 7 and first connecting wires 8. The plurality of second connecting strips 6 are arranged in parallel and connected to the first ends of the plurality of shielding plates 1 on the same side in a one-to-one correspondence. The arcuate ridges 7 are arranged around the periphery of the rotating shaft 14. The first connecting wire 8 passes through the plurality of second connecting strips 6 in sequence and is connected to the arcuate ridges 7. When the display end 13 is opened or closed relative to the system end 11 to drive the rotating shaft 14 to rotate, the arcuate ridges 7 rotate with the rotating shaft 14 and pull the first connecting wires 8 and the plurality of second connecting strips 6 to move, so that the plurality of shielding plates 1 rotate synchronously and switch between the closed state and the open state. The adjustment mechanism has a simple structure, is easy to implement and has a low cost.

[0055] It can be understood that the structure and material of the second connecting bar 6 of the second embodiment and the first connecting bar 3 of the first embodiment can be completely the same.

[0056] As shown in FIG. 11 , a plurality of convex points 9 are sequentially spaced along the extending direction of the arc-shaped ridge 7 , and each convex point 9 corresponds to the rotation angle of the rotating shaft 14 , so that the convex point 9 is used to represent the opening angle of the plurality of shielding plates 1 .

[0057] The shell of the system end 11 is provided with a through hole. When the shaft 14 rotates, the protrusion 9 can enter and exit the through hole in sequence, forming a click-click feeling, and can position the angle after rotation. The shielding baffle formed by multiple shielding plates 1 can be fixed between the top cover and the base of the system end 11 to prevent unnecessary movement or loosening. In order for the protrusion 9 to enter and exit the through hole in sequence during the rotation of the shaft 14, the protrusion 9 can be made of a deformable material. The corresponding rotation angle is marked on the top of the protrusion 9 to facilitate the user to intuitively understand the opening degree of the shielding plate 1.

[0058] The electromagnetic shielding structure of the second embodiment is similar to the structure of a Venetian blind. The shielding plate 1 rotates to an open state or a closed state under the pulling action of the first connecting line 8. The rotation angle of the shielding plate 1 is related to the rotation angle of the rotating shaft 14. By changing the rotation angle of the rotating shaft 14, the opening degree of the shielding plate 1 is changed, and the width of the heat dissipation channel is controlled to achieve the best heat dissipation effect.

[0059] In some embodiments, Figure 7 and Figure 8 As shown, the electromagnetic shielding structure also includes a second connecting line 10, which sequentially passes through the second ends of the multiple shielding plates 1 located on the other same side, and the two ends of the second connecting line 10 are respectively connected to the system end 11 (top cover or base). By setting the second connecting line 10, the shielding plate 1 can be kept at the air inlet and outlet 12.

[0060] It can be understood that both the first connecting wire 8 and the second connecting wire 10 can be metal wires with sufficient rigidity and durability.

[0061] like Figure 4 As shown, a plurality of air inlets and outlets 12 are arranged in sequence between the top cover and the base of the system end 11 of the notebook computer near the display end 13, and the plurality of air inlets and outlets 12 extend in the axial direction of the rotating shaft 14 and form a long strip. In order to adapt to the overall shape of the air inlets and outlets 12, the shielding plate 1 is also designed to be a long strip, and the shielding plate 1 extends in the axial direction of the rotating shaft 14, as shown in FIG. Figure 2 shown.

[0062] Multiple or continuous heat dissipation holes 2 may also be provided on the multiple shielding plates 1. The heat dissipation holes 2 allow air to flow and guide heat to be dissipated from the inside of the laptop computer, so as to facilitate heat dissipation of the laptop computer. The opening form can be adjusted accordingly according to the opening rate requirements of the project, and can be set as a round hole or a square hole, etc., and the corresponding number of openings on each shielding plate 1 can also be arranged and combined. That is, the shape of the heat dissipation hole 2 can be one or more of a circle, a rectangle, or a slit extending along the length direction of the shielding plate 1. Figure 6 and Fig. 9 Part of the heat dissipation holes 2 are shown as an example.

[0063] It is understandable that the heat dissipation holes 2 should be provided in a manner that does not affect the antenna performance.

[0064] like Fig.12 From the simulation experiment result diagram shown, it can be seen that the electromagnetic shielding structure of the embodiment of the utility model has significantly improved the isolation of all frequency bands of WiFi.

[0065] The embodiment of the utility model further provides a laptop computer, the laptop computer includes a display terminal 13 and a system terminal 11, the display terminal 13 is rotatably connected to the system terminal 11 through a rotating shaft 14, and an air inlet and outlet 12 is provided on the rear side of the system terminal 11 rotatably connected to the display terminal 13. The laptop computer also includes the electromagnetic shielding structure in any of the above embodiments, the electromagnetic shielding structure is provided at the air inlet and outlet 12 of the system terminal 11, and is used to control the opening and closing of the air inlet and outlet 12.

[0066] The above description is intended to be illustrative rather than restrictive, and those skilled in the art may make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure. Moreover, the above examples (or one or more of them) may be used in combination with each other, and it is contemplated that these embodiments may be combined with each other in various combinations or permutations.

Claims

1. An electromagnetic shielding structure, used in a laptop computer, the laptop computer comprising a system end and a display end, the rear side of the system end close to the display end is provided with an air inlet and outlet, characterized in that: The electromagnetic shielding structure comprises: A plurality of shielding plates are arranged at the air inlet and outlet of the system end, and the plurality of shielding plates can rotate relative to the system end to have a closed state and an open state. When the plurality of shielding plates are in the closed state, they are arranged side by side and form a shielding baffle wall to cover the air inlet and outlet. When the plurality of shielding plates are in the open state, a gap communicating with the air inlet and outlet is formed between two adjacent shielding plates; The adjusting mechanism is connected to the plurality of shielding plates respectively, and is used for driving the plurality of shielding plates to switch between the closed state and the open state, and keeping the plurality of shielding plates in the switched position.

2. The electromagnetic shielding structure according to claim 1, characterized in that: The regulating mechanism comprises: A plurality of first connecting bars, wherein the plurality of first connecting bars are arranged in parallel and one end of the first connecting bars is connected to the first ends of the plurality of shielding plates on the same side in a one-to-one correspondence; A roller, the roller is rotatably disposed on the system end and is provided with external teeth; A transmission belt, the transmission belt passes around the roller, the other ends of the plurality of first connecting strips are connected to the transmission belt, and the transmission belt is provided with a tooth portion meshing with the roller; When the roller is rotated, the transmission belt can be driven to rotate, thereby pulling the plurality of first connecting strips to move, so that the plurality of shielding plates rotate synchronously and switch between the closed state and the open state.

3. The electromagnetic shielding structure according to claim 2, characterized in that: An opening matched with the roller is provided on the shell of the system end, and the roller can be exposed to the system end through the opening.

4. The electromagnetic shielding structure according to claim 1, characterized in that: The regulating mechanism comprises: A plurality of second connecting bars, wherein the plurality of second connecting bars are arranged in parallel and one end of the second connecting bars is connected one by one to the first ends of the plurality of shielding plates located on the same side; An arc-shaped convex ridge, the arc-shaped convex ridge being arranged around the outer periphery of a rotating shaft for rotatably connecting the display end and the system end of the notebook computer; A first connecting line, wherein the first connecting line passes through the plurality of the second connecting strips in sequence and is connected to the arcuate ridge. When the display end is opened or closed relative to the system end to drive the shaft to rotate, the arcuate ridge rotates with the shaft and pulls the first connecting line and the plurality of the second connecting strips to move, so that the plurality of shielding plates rotate synchronously and switch between the closed state and the open state.

5. The electromagnetic shielding structure according to claim 4, characterized in that: The arc-shaped ridge is provided with a plurality of convex points spaced in sequence along its extension direction, and each of the convex points corresponds to the rotation angle of the rotating shaft, so that the convex points are used to represent the opening angles of the plurality of shielding plates.

6. The electromagnetic shielding structure according to claim 5, characterized in that: A through hole is provided on the shell of the system end, and when the rotating shaft rotates, the protrusions can enter and exit the through hole in sequence.

7. The electromagnetic shielding structure according to any one of claims 1 to 6, characterized in that: The electromagnetic shielding structure further includes a second connecting line, which passes through the second ends of the plurality of shielding plates on the same side in sequence, and both ends of the second connecting line are respectively connected to the system end.

8. The electromagnetic shielding structure according to any one of claims 1 to 6, characterized in that: The plurality of shielding plates are respectively provided with heat dissipation holes; the heat dissipation holes are in the shape of a circle, a rectangle or a slit extending along the length direction of the shielding plate.

9. The electromagnetic shielding structure according to claim 4, characterized in that: The shielding plate is made of metal; the first connecting wire is a metal wire.

10. A notebook computer, comprising a display terminal and a system terminal, wherein the display terminal is rotatably connected to the system terminal via a rotating shaft, and an air inlet and outlet are arranged on the rear side of the system terminal rotatably connected to the display terminal, characterized in that: The laptop computer further comprises the electromagnetic shielding structure according to any one of claims 1 to 9, wherein the electromagnetic shielding structure is disposed at the air inlet and outlet of the system end and is used to control the opening and closing of the air inlet and outlet.

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