CN114828600A

CN114828600A - External electromagnetic shielding device

Info

Publication number: CN114828600A
Application number: CN202110112694.8A
Authority: CN
Inventors: 黄协圣; 林佩燕; 杨朝发
Original assignee: Huihong Technology Co ltd
Current assignee: Huihong Technology Co ltd
Priority date: 2021-01-27
Filing date: 2021-01-27
Publication date: 2022-07-29

Abstract

The invention discloses an external electromagnetic shielding device, which comprises a bottom shielding sheet, a conductive cover which is in a grid shape and is positioned on the bottom shielding sheet, and a winding module. The conductive cover comprises a top cover net arranged at an interval with the bottom shielding sheet, a side cover net connected to the periphery of the top cover net, and a plurality of supporting bodies fixed on the side cover net. The conductive cover and the bottom shielding sheet surround to form an electromagnetic shielding space. The plurality of supports include a bottom support disposed annularly, any two of the supports being disposed at an interval. The rolling module comprises a rolling unit and a linkage unit connected with the rolling unit and the bottom support body. When the rolling unit rolls or rolls the linkage unit, the side cover net performs reciprocating movement between the bottom shielding sheet and the top cover net. Therefore, the external electromagnetic shielding device can be erected outside the test system to achieve the effect of complete electromagnetic shielding on the outside of the test system.

Description

External electromagnetic shielding device

Technical Field

The present disclosure relates to shielding devices, and particularly to an external electromagnetic shielding device.

Background

Although the existing test system is provided with an electromagnetic shielding structure in the interior, most of the electromagnetic shielding structures can only carry out local electromagnetic shielding, so that the existing test system cannot be completely free from external electromagnetic interference in the operation process. As many semiconductor IC test apparatuses currently can test an object to be tested without considering external electromagnetic wave factors, and 5G integrated circuits even with millimeter wave frequency band must consider the problems of stability of test environment, test accuracy, test efficiency and test cost. Therefore, the inventor thinks that the above-mentioned defects can be improved and the test stability is improved, and the inventor is careful to study and cooperate with the application of scientific principles, and finally provides the invention which is reasonable in design and effectively improves the above-mentioned defects.

Disclosure of Invention

The embodiment of the invention provides an external electromagnetic shielding device, which can effectively overcome the defects possibly generated by an electromagnetic shielding structure in the conventional test system.

The embodiment of the invention discloses an external electromagnetic shielding device, which is used for being configured at the outer side of a test system and comprises: the bottom shielding sheet is used for being arranged at the bottom of the test system; a conductive cover, which is in a grid shape and is located on the bottom shielding plate, and the conductive cover includes: a top shield mesh spaced apart from the bottom shield sheet in a height direction; the side cover net is connected with the top cover net, and the side cover net, the top cover net and the bottom shielding sheet surround to form an electromagnetic shielding space; the plurality of supporting bodies comprise a bottom supporting body which is annularly configured, the plurality of supporting bodies are fixed on the side cover net, and any two supporting bodies are arranged at intervals in the height direction; and a rolling module, which comprises a rolling unit and a linkage unit connecting the rolling unit and the bottom support body; when the rolling unit rolls or unrolls the linkage unit, the linkage unit drives the bottom support body to make the side cover net do the reciprocating movement between the bottom shielding piece and the top cover net along the height direction.

Optionally, the external electromagnetic shielding device further includes a suspension module connected to the top cover mesh, so that the conductive cover can be suspended at a predetermined position by the suspension module.

Optionally, the scrolling unit includes a plurality of scrolling devices, the linking unit includes a plurality of wires respectively wound around the plurality of scrolling devices, and one ends of the plurality of wires are respectively fixed at different positions of the bottom support.

Optionally, the bottom shielding plate is formed by connecting a plurality of splicing plates, and the splicing plates are detachably arranged at the bottom of the testing system.

Optionally, any two adjacent splicing pieces are in a partially overlapped arrangement.

The external electromagnetic shielding device of claim 1, further comprising a grid-shaped inner conductive cover, wherein the inner conductive cover is disposed in the electromagnetic shielding space and is spaced outside the testing system.

Optionally, the linking unit is further connected to the inner conductive cover, and when the scrolling unit scrolls or unwinds the linking unit, the linking unit drives the bottom edge of the inner conductive cover to move back and forth along the height direction.

Optionally, the mesh number of the conductive cover is between 20 mesh and 500 mesh, and the mesh number of the inner conductive cover is between 20 mesh and 500 mesh.

Optionally, the material of the conductive cover is different from the material of the inner conductive cover, one of the conductive cover and the inner conductive cover is a copper mesh, and the other of the conductive cover and the inner conductive cover is a conductive cloth.

Optionally, the bottom support body is wrapped in the side cover net and can be magnetically attracted to the bottom shielding sheet, so that the bottom edge of the side cover net abuts against the bottom shielding sheet to achieve the common ground.

The embodiment of the invention also discloses an external electromagnetic shielding device, which comprises: a bottom shielding plate; a conductive cover, which is in a grid shape and is located on the bottom shielding plate, and the conductive cover includes: a top shield mesh spaced apart from the bottom shield sheet in a height direction; the side cover net is connected with the top cover net, and the side cover net, the top cover net and the bottom shielding sheet surround to form an electromagnetic shielding space; and a bottom support body which is configured in a ring shape and fixed on the side cover net; and a rolling module, which comprises a rolling unit and a linkage unit connecting the rolling unit and the bottom support body; when the rolling unit rolls or unrolls the linkage unit, the linkage unit drives the bottom support body to make the side cover net reciprocate between the bottom shielding piece and the top cover net along the height direction.

Optionally, the bottom shielding plate is formed by splicing a plurality of splicing plates, and any two adjacent splicing plates are arranged in a partially overlapped mode.

Optionally, the mesh number of the conductive cover is between 20 mesh and 500 mesh.

In summary, the external electromagnetic shielding apparatus disclosed in the embodiments of the present invention can be erected outside the testing system, so as to achieve the complete electromagnetic shielding effect of the testing system to the outside. Furthermore, the external electromagnetic shielding device adopts the grid-shaped conductive cover to effectively maintain the heat dissipation effect of the test system, thereby avoiding influencing the operation of the test system.

For a better understanding of the nature and technical content of the present invention, reference should be made to the following detailed description of the invention and the accompanying drawings, which are provided for illustration purposes only and are not intended to limit the scope of the invention in any way.

Drawings

Fig. 1 is a schematic perspective view illustrating an external electromagnetic shielding device disposed outside a test system according to an embodiment of the invention.

Fig. 2 is a schematic cross-sectional view of fig. 1 along the sectional line II-II.

Fig. 3 is an enlarged schematic view of region III of fig. 2.

Fig. 4 is a perspective view of another external electromagnetic shielding device according to an embodiment of the invention.

Fig. 5 is a schematic cross-sectional view (one) of the conductive cover of fig. 1 when rolled.

Fig. 6 is a schematic sectional view (ii) of the conductive cover of fig. 1 during rolling.

Fig. 7 is a schematic perspective view illustrating an external electromagnetic shielding device disposed outside a test system according to a second embodiment of the invention.

Fig. 8 is a schematic cross-sectional view of fig. 7 along the sectional line VIII-VIII.

Fig. 9 is an enlarged schematic view of region IX of fig. 8.

Fig. 10 is a schematic cross-sectional view of the conductive cover and the inner conductive cover of fig. 7 during rolling.

Fig. 11 is a perspective view of another external electromagnetic shielding device according to a second embodiment of the present invention.

Fig. 12 is a schematic cross-sectional view of fig. 11 along section line XII-XII.

Fig. 13 is a schematic cross-sectional view of the conductive cover and the inner conductive cover of fig. 11 when they are rolled up.

Detailed Description

The following is a description of the embodiments of the present disclosure relating to the "external electromagnetic shielding device" by specific embodiments, and those skilled in the art will understand the advantages and effects of the present disclosure from the disclosure of the present disclosure. The invention is capable of other and different embodiments and its several details are capable of modification and various other changes, which can be made in various details within the specification and without departing from the spirit and scope of the invention. The drawings of the present invention are for illustrative purposes only and are not drawn to scale. The following embodiments will further explain the related art of the present invention in detail, but the disclosure is not intended to limit the scope of the present invention.

It will be understood that, although the terms "first," "second," "third," etc. may be used herein to describe various components or signals, these components or signals should not be limited by these terms. These terms are used primarily to distinguish one element from another element or from one signal to another signal. In addition, the term "or" as used herein should be taken to include any one or combination of more of the associated listed items as the case may be.

[ example one ]

Fig. 1 to fig. 6 show a first embodiment of the present invention. As shown in fig. 1 to 3, the present embodiment discloses an external electromagnetic shielding apparatus 100 configured to be disposed outside a testing system 200. It should be noted that, in the embodiment, the external electromagnetic shielding device 100 may be directly mounted (or installed) outside the testing system 200 without moving the testing system 200, so that the testing system 200 is covered by the external electromagnetic shielding device 100 to achieve the electromagnetic shielding effect.

In this embodiment, the external electromagnetic shielding device 100 includes a bottom shielding plate 1, a conductive cover 2 located above the bottom shielding plate 1, a suspension module 3 connected to the conductive cover 2, and a winding module 4 installed on the conductive cover 2. Although the external electromagnetic shielding device 100 includes the above components, the invention is not limited thereto. For example, in other embodiments not shown in the present disclosure, the suspension module 3 may be omitted or replaced by other components. The external electromagnetic shielding device 100 will be described in detail below, and the connection relationship will be described in detail.

The bottom shielding plate 1 is disposed at the bottom of the test system 200, so as to prevent the test system 200 from being interfered by signals from the bottom thereof. In this embodiment, the bottom shielding plate 1 may be an aluminum foil plate that is not in a grid shape, but the invention is not limited thereto. Furthermore, the size of the bottom shield plate 1 corresponds to the size of the test system 200 (e.g., a projection area formed by orthographically projecting the test system 200 on the bottom shield plate 1 along a height direction H is located inside the periphery of the bottom shield plate 1).

In more detail, the bottom shielding plate 1 is formed by assembling a plurality of splicing pieces 11, and any two adjacent splicing pieces 11 are preferably arranged in a partially overlapped manner, so that the plurality of splicing pieces 11 are detachably arranged at the bottom of the testing system 200, and the plurality of splicing pieces 11 arranged in an overlapped manner can achieve the complete electromagnetic shielding effect.

In other words, the bottom shielding plate 1 may be partially overlapped by any two adjacent splicing pieces 11, so that no gap is formed in the height direction H, but the invention is not limited thereto. For example, in other embodiments not shown in the present invention, the splicing pieces 11 of the bottom shielding plate 1 may not overlap each other; alternatively, the bottom shield plate 1 may be of a single-piece structure.

The conductive cover 2 is in a grid shape, and the mesh number of the conductive cover 2 is between 20 mesh and 500 mesh in this embodiment, so that the air inside and outside the conductive cover 2 can circulate to improve the heat dissipation efficiency. The conductive cover 2 may be a copper mesh, but the invention is not limited thereto. For example, in other embodiments not shown in the present invention, the conductive cover 2 may also be a conductive cloth or other metal mesh besides copper mesh.

More specifically, the conductive cover 2 includes a top cover net 21, a side cover net 22 connected to the top cover net 21 (e.g., the periphery of the top cover net 21), and a plurality of supporting members 23 fixed to the side cover net 22. In this embodiment, the suspension module 3 is connected to the canopy net 21, so that the conductive hood 2 can be suspended at a predetermined position by the suspension module 3. For example, the suspension module 3 may include a plurality of suspension ropes respectively fixed to a plurality of portions of the canopy mesh 21 so as to suspend the conductive cover 2 from a ceiling 300, thereby improving the use of the space above the test system 200, but the invention is not limited thereto.

The top cover net 21 and the bottom shielding sheet 1 are separated by a distance in the height direction H (for example, the distance is greater than the height of the test system 200), and the size of the top cover net 21 corresponds to the size of the test system 200; for example, the test system 200 is orthographically projected to the canopy mesh 21 along the height direction H to form a projection area, which is located inside the periphery of the canopy mesh 21.

Further, the shape of the peripheral edge of the top cover net 21 is equivalent to the shape of the cross section of the side cover net 22 perpendicular to the height direction H, and the shape of the peripheral edge of the top cover net 21 is illustrated as a rectangle in the present embodiment, but the present invention is not limited thereto. Wherein, the side cover net 22, the top cover net 21 and the bottom shielding plate 1 surround to form an electromagnetic shielding space S, and the testing system 200 is located in the electromagnetic shielding space S.

Each of the supporting bodies 23 is disposed in a ring shape, and a plurality of the supporting bodies 23 are preferably disposed inside the side cover net 22, and any two of the supporting bodies 23 are disposed at an interval in the height direction H. Wherein the annular arrangement in this embodiment means: any one of the supporting bodies 23 may include a plurality of strip-shaped structures arranged in a ring shape; alternatively, any of the supports 23 may be a one-piece ring structure. The material of the plurality of supports 23 may be different from each other, for example: the support 23 may be made of aluminum, iron, or other materials.

For convenience of illustration, the supporting body 23 adjacent to the bottom shielding plate 1 is defined as a bottom supporting body 23a in the present embodiment, and the bottom supporting body 23a is preferably wrapped in the side cover net 22 and can be magnetically attracted to the bottom shielding plate 1, so that the bottom edge of the side cover net 22 abuts against the bottom shielding plate 1 to achieve a common ground. For example, the bottom support 23a may be a metal strip and a plurality of magnets combined with the metal strip, and the bottom shield plate 1 is attracted by the plurality of magnets, but the invention is not limited thereto.

The rolling module 4 includes a scrolling unit 41 and a linking unit 42 connecting the scrolling unit 41 and the bottom support 23 a. In the present embodiment, the scrolling unit 41 includes a plurality of scrolling devices 411, and the linking unit 42 includes a plurality of wires 421 (e.g., nylon cords) respectively wound around the plurality of scrolling devices 411. Wherein, a plurality of the rolling devices 411 can be installed on the same carrier (such as the ceiling 300) as the suspension module 3, a plurality of the wires 421 can penetrate into the inner side of the side cover net 22, and one ends of the wires 421 are respectively fixed on different positions of the bottom supporter 23 a.

In more detail, the number of the scrolling devices 411 included in the scrolling unit 41 may be two as shown in fig. 1, and the linking unit 42 has a corresponding structure; alternatively, the number of the scrolling devices 411 included in the scrolling unit 41 may be four as shown in fig. 4, and the linking unit 42 has a corresponding structure, but the invention is not limited thereto. For example, in other embodiments not shown in the present invention, the scrolling unit 41 includes at least one scrolling device 411, and the linking unit 42 may include at least one wire 421.

As shown in fig. 2, 5 and 6, when the rolling unit 41 rolls or rolls the linking unit 42, the linking unit 42 drives the bottom support 23a to make the side cover net 22 move back and forth between the bottom shielding sheet 1 and the top cover net 21 along the height direction H. That is, the external electromagnetic shielding device 100 can move the bottom edge of the side cover net 22 to a specific height by the operation of the furling module 4, so as to facilitate the operation or maintenance of the testing system 200.

Accordingly, the external electromagnetic shielding device 100 is installed outside the testing system 200 in this embodiment, so as to achieve the complete electromagnetic shielding effect of the testing system 200 to the outside. Furthermore, the external electromagnetic shielding device 100 employs the conductive cover 2 in a grid shape to effectively maintain the heat dissipation effect of the testing system 200, thereby avoiding affecting the operation of the testing system 200.

[ example two ]

Please refer to fig. 7 to 13, which illustrate a second embodiment of the present invention. Since this embodiment is similar to the first embodiment, the same features of the two embodiments are not described again, and the main differences of this embodiment compared to the first embodiment are roughly described as follows:

in the embodiment, as shown in fig. 7 to 10, the external electromagnetic shielding device 100 further includes a mesh-shaped inner conductive cover 5, and the mesh number of the inner conductive cover 5 is between 20 mesh and 500 mesh, so that the air inside and outside the inner conductive cover 5 can circulate, thereby improving the heat dissipation efficiency.

Furthermore, the material of the inner conductive cover 5 is preferably different from the material of the conductive cover 2, and one of the conductive cover 2 and the inner conductive cover 5 is a copper mesh, and the other of the conductive cover 2 and the inner conductive cover 5 is a conductive cloth, but the invention is not limited thereto. For example, in other embodiments not shown in the present invention, the material of the inner conductive cover 5 may be the same as the material of the conductive cover 2 (e.g., the conductive cover 2 and the inner conductive cover 5 are both copper mesh or both conductive cloths); alternatively, the inner conductive cover 5 or the conductive cover 2 may be a metal mesh other than a copper mesh.

The inner conductive cover 5 is disposed in the electromagnetic shielding space S and is used for covering the outer side of the test system 200 at intervals. The inner conductive cover 5 and the winding module 4 of the conductive cover 2 may be, for example: the interlocking unit 42 is further provided with a plurality of wires 421a, which are respectively wound around the plurality of winders 411 and connected to the inner conductive cover 5, so that the interlocking unit 42 can be connected to the inner conductive cover 5.

In more detail, since the inner conductive cover 5 is located inside the conductive cover 2 (or within the electromagnetic shielding space S) to further enhance the electromagnetic shielding effect of the test system 200, the configuration of the inner conductive cover 5 can be adjusted according to design requirements.

For example, the inner conductive cover 5 may be completely comparable to the conductive cover 2 (technical details are not repeated), that is, the inner conductive cover 5 may include an inner top cover mesh 51 disposed at an interval with the top cover mesh 21, an inner side cover mesh 52 connected to the periphery of the inner top cover mesh 51, and a plurality of inner supporting bodies 53 fixed to the inner side cover mesh 52 as shown in fig. 7 to 10; alternatively, the inner conductive cover 5 may not be the same as the conductive cover 2, that is, the inner conductive cover 5 may omit the inner top cover mesh 51 as shown in fig. 11 to 13 and only include an inner side cover mesh 52 connected to the top cover mesh 21 and the inner supporting bodies 53 connected to the inner side cover mesh 52.

Accordingly, when the rolling unit 41 rolls or rolls the linking unit 42, the linking unit 42 drives the bottom edge of the inner conductive cover 5 to reciprocate along the height direction H. Further, in this embodiment, the furling module 4 can furl or furl the inner conductive cover 5 and the conductive cover 2 synchronously, so as to facilitate the operation of the user and effectively achieve the electromagnetic shielding effect of the testing system 200, but the invention is not limited thereto.

In addition, the external electromagnetic shielding device 100 is illustrated in the embodiment by adding one inner conductive cover 5 between the conductive cover 2 and the testing system 200, but in other embodiments not shown in the present invention, the number of the inner conductive covers 5 may be multiple, and is not limited to the drawings of the embodiment.

[ technical effects of embodiments of the present invention ]

In addition, in the external electromagnetic shielding device disclosed in the embodiment of the present invention, the conductive cover and the inner conductive cover are both in a grid shape, and the mesh number of the conductive cover and the mesh number of the inner conductive cover are preferably limited within a certain value (for example, between 20 mesh and 500 mesh), so that the air inside and outside the conductive cover and the inner conductive cover can circulate, thereby improving the heat dissipation efficiency.

In addition, the external electromagnetic shielding device disclosed by the embodiment of the invention can be additionally provided with the inner conductive cover coated on the outer side of the test system in the electromagnetic shielding space, so as to further strengthen the electromagnetic shielding effect of the test system.

The disclosure is only a preferred embodiment of the invention and is not intended to limit the scope of the invention, so that all equivalent technical changes made by using the contents of the specification and drawings are included in the scope of the invention.

Claims

1. An external electromagnetic shielding device, wherein the external electromagnetic shielding device is disposed outside a testing system, the external electromagnetic shielding device comprising:

the bottom shielding sheet is used for being arranged at the bottom of the test system;

a conductive cover, which is in a grid shape and is located on the bottom shielding plate, and the conductive cover comprises:

a top shield mesh spaced apart from the bottom shield in a height direction;

a side cover net connected with the top cover net, wherein the side cover net, the top cover net and the bottom shielding sheet surround to form an electromagnetic shielding space; and

a plurality of supports including a bottom support arranged in a ring shape, the plurality of supports being fixed to the side cover net, and any two supports being provided at an interval in the height direction; and

a rolling module, which comprises a rolling unit and a linkage unit connecting the rolling unit and the bottom support body; when the rolling unit rolls or unrolls the linkage unit, the linkage unit drives the bottom support body to enable the side cover net to move back and forth between the bottom shielding sheet and the top cover net along the height direction.

2. The external electromagnetic shielding device of claim 1 further comprising a suspension module connected to the canopy mesh, such that the conductive canopy can be suspended at a predetermined position by the suspension module.

3. The external electromagnetic shielding device of claim 1, wherein the scrolling unit comprises a plurality of scrolling devices, the linking unit comprises a plurality of wires respectively wound around the plurality of scrolling devices, and one ends of the plurality of wires are respectively fixed at different positions of the bottom supporting body.

4. The external electromagnetic shielding device of claim 1, wherein the bottom shielding plate is formed by connecting a plurality of splicing plates, and the plurality of splicing plates are detachably arranged at the bottom of the testing system.

5. The external electromagnetic shielding device of claim 4 wherein any two adjacent splicing tabs are partially overlapped.

6. The external electromagnetic shielding device of claim 1, wherein the external electromagnetic shielding device comprises an inner conductive cover in a grid shape, and the inner conductive cover is disposed in the electromagnetic shielding space and is configured to cover the outside of the testing system at intervals.

7. The external electromagnetic shielding device of claim 6, wherein the linking unit is further connected to the inner conductive cover, and when the scrolling unit scrolls or unwinds the linking unit, the linking unit drives the bottom edge of the inner conductive cover to reciprocate along the height direction.

8. The external electromagnetic shielding device according to claim 6, wherein the mesh number of the conductive cover is between 20 mesh and 500 mesh, and the mesh number of the inner conductive cover is between 20 mesh and 500 mesh.

9. The external electromagnetic shielding device of claim 6 wherein the material of the conductive cover is different from the material of the inner conductive cover, and one of the conductive cover and the inner conductive cover is a copper mesh, and the other of the conductive cover and the inner conductive cover is a conductive cloth.

10. The external electromagnetic shielding device of claim 1, wherein the bottom supporting body is wrapped in the side cover net and magnetically attracted to the bottom shielding sheet, so that the bottom edge of the side cover net abuts against the bottom shielding sheet to achieve common ground.

11. An external electromagnetic shielding device, comprising:

a bottom shielding plate;

a top shield mesh spaced apart from the bottom shield in a height direction;

a bottom support body which is annularly configured and fixed on the side cover net; and

a rolling module, which comprises a rolling unit and a linkage unit connecting the rolling unit and the bottom support body; when the rolling unit rolls or unwinds the linkage unit, the linkage unit drives the bottom support body to enable the side cover net to reciprocate between the bottom shielding sheet and the top cover net along the height direction.

12. The external electromagnetic shielding device of claim 11 further comprising a suspension module connected to the canopy mesh such that the conductive canopy can be suspended at a predetermined position by the suspension module.

13. The external electromagnetic shielding device of claim 11, wherein the scrolling unit comprises a plurality of scrolling devices, the linking unit comprises a plurality of wires respectively wound around the plurality of scrolling devices, and one ends of the plurality of wires are respectively fixed at different positions of the bottom supporting body.

14. The external electromagnetic shielding device of claim 11 wherein the bottom shielding plate is formed by joining a plurality of splicing plates, and any two adjacent splicing plates are partially overlapped.

15. The external electromagnetic shielding device of claim 11 wherein the mesh number of the conductive shield is between 20 mesh and 500 mesh.