CN210226092U

CN210226092U - USB connecting module of shielding box

Info

Publication number: CN210226092U
Application number: CN201920259287.8U
Authority: CN
Inventors: Jian Yu; 余健; Yuke Chen; 陈宇科
Original assignee: Huizhou Gaoshengda Technology Co Ltd
Current assignee: Huizhou Gaoshengda Technology Co Ltd
Priority date: 2019-02-28
Filing date: 2019-02-28
Publication date: 2020-03-31
Anticipated expiration: 2029-02-28

Abstract

The utility model discloses a shielding box USB connection module, which comprises a box body, a data plug-in end and a circuit board; the USB impedance line is manufactured according to the dielectric constant of the circuit board, so that the optimal USB signal communication is provided for the test of the shielding box; by arranging the bending channel on the box body, when a data signal enters from the data insertion end, due to the wavelength of the radio frequency signal, a diffraction phenomenon can occur when the data signal enters the bending channel, sight line transmission is damaged, the effect of filtering most radio frequency signals is achieved, a large number of radio frequency signals are prevented from entering the shielding box to interfere with the shielding box, and the accuracy of a test result of the shielding box is further ensured; through set up top ground connection district and set up bottom ground connection district at bottom shielding layer at top shielding layer, radio frequency signal can be through leading-in earth in top ground connection district and bottom ground connection district when getting into top shielding layer and bottom shielding layer to reach filtering radio frequency signal's effect.

Description

USB connecting module of shielding box

Technical Field

The utility model relates to a shielded cell design field especially relates to a shielded cell USB connects module.

Background

At present, with the development of science and technology, various radiation and electromagnetic interference have great influence on our lives and works, so that the shielding box is one of indispensable devices for our lives and works. The shielding box is a metal body which is made of conductive or magnetic conductive materials and has various shapes, limits the electromagnetic capacity in a certain space range and is used for inhibiting radiation interference. And the radiation is processed to realize the equipment which provides the tested wireless communication equipment with an interference-free testing environment. Meanwhile, the shielding box is also applied to various fields such as: the test system comprises a wireless communication test device, an electromagnetic interference test device, a coupling test device, a radio frequency function test device, a mobile phone, a Bluetooth device, a wireless router and other devices, and a complete machine or chip test device. However, the conventional shield box has the following problems:

1. in the process of testing the shielding box, the phenomenon that radio frequency signals are connected into the shielding box from the interface due to poor shielding of the interface often occurs, and further the inaccuracy of a test result is caused.

2. At the present stage, a wiring groove is mainly formed in a shielding box for wiring, the phenomenon of poor wiring can be caused under the condition of long-time use, meanwhile, impedance matching is not carried out during conduction testing of wireless products, and therefore the actual real-time data deviation is large, and the quality of the tested products cannot be correctly reflected in time.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the weak point among the prior art, providing one kind and can reducing the problem that radio frequency signal joined in marriage the system to and can also reduce the shielded cell USB connection module who matches the impedance problem.

The purpose of the utility model is realized through the following technical scheme:

a shielded box USB connects module includes:

the box body is provided with a bending channel, the data plug-in end is arranged on the box body, and the circuit board is arranged in the bending channel;

the circuit board comprises a top shielding layer, a data transmission layer, a ground layer and a bottom shielding layer, wherein one side surface of the data transmission layer is arranged on one side surface of the top shielding layer, one side surface of the ground layer is arranged on the other side surface of the data transmission layer far away from the top shielding layer, the bottom shielding layer is arranged on the other side surface of the ground layer far away from the data transmission layer, a plurality of top wiring holes are formed in the top shielding layer, intervals are arranged between the top wiring holes respectively, a plurality of bottom wiring holes are formed in the bottom shielding layer, intervals are arranged between the bottom wiring holes respectively, and the top wiring holes are communicated with the bottom wiring holes in a one-to-one correspondence mode.

In one embodiment, a plurality of signal transmission channels are arranged on the data transmission layer, and a space is respectively arranged between each two signal transmission channels.

In one embodiment, the top shielding layer further has a top grounding region, and the bottom shielding layer further has a bottom grounding region.

In one embodiment, the data transmission layer is further provided with a plurality of conductive holes, and each conductive hole is respectively in one-to-one correspondence communication with each top wiring hole, so that the data transmission layer is electrically connected with the top shielding layer.

In one embodiment, the ground layer has a plurality of ground holes, each of the ground holes has a space therebetween, and each of the ground holes is in one-to-one correspondence with each of the conductive holes and each of the bottom wiring holes, so that the ground layer is electrically connected to the data transmission layer and the bottom shielding layer.

In one embodiment, the top shielding layer further has a plurality of top via holes, and a space is disposed between each top via hole.

In one embodiment, the bottom shielding layer further has a plurality of bottom via holes, and a space is disposed between each of the bottom via holes.

In one embodiment, each of the top wiring holes is in one-to-one correspondence with each of the bottom wiring holes.

In one embodiment, the top shielding layer is provided with a plurality of pads, and a space is respectively arranged between the pads.

In one embodiment, the data transmission layer is provided with a plurality of layers, and each data transmission layer is used for transmitting signals.

The utility model discloses compare in prior art's advantage and beneficial effect as follows:

the utility model relates to a shielding box USB connection module, which is characterized in that a USB impedance line is manufactured according to the dielectric constant of a circuit board, thereby providing the best USB signal communication for the shielding box test; by arranging the bending channel on the box body, when a data signal enters from the data insertion end, due to the wavelength of the radio frequency signal, a diffraction phenomenon can occur when the data signal enters the bending channel, sight line transmission is damaged, the effect of filtering most radio frequency signals is achieved, a large number of radio frequency signals are prevented from entering the shielding box to interfere with the shielding box, and the accuracy of a test result of the shielding box is further ensured; through set up top ground connection district and set up bottom ground connection district at bottom shielding layer at top shielding layer, radio frequency signal can be through leading-in earth in top ground connection district and bottom ground connection district when getting into top shielding layer and bottom shielding layer to reach filtering radio frequency signal's effect.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a shielding box USB connection module according to an embodiment of the present invention;

fig. 2 is an internal schematic view of a bending passage according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a circuit board according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a top shield according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a data transmission layer according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a ground plane according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a bottom shielding layer according to an embodiment of the present invention.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 and fig. 3, a USB connection module 10 of a shielding box includes: case 100, data plug end and circuit board 200. The box body 100 is used for placing elements of the shielding box, the data plug end is used for receiving external USB signals, and the circuit board 200 is used for filtering radio frequency signals and carrying out data transmission.

Referring to fig. 1 and 3, a bending channel 110 is formed on the case 100, the data plug terminal is disposed on the case 100, the circuit board 200 is disposed in the bending channel 110, the circuit board 200 includes a top shielding layer 210 and a data transmission layer 220, ground plane 230 and bottom shielding layer 240, a side of data transmission layer 220 sets up on a side of top shielding layer 210, a side of ground plane 230 sets up on another side that data transmission layer 220 kept away from top shielding layer 210, bottom shielding layer 240 sets up on another side that data transmission layer 220 was kept away from to ground plane 230, a plurality of top wiring holes 212 have been seted up to top shielding layer 210, be provided with the interval between each top wiring hole 212 respectively, a plurality of bottom wiring holes 242 have been seted up to bottom shielding layer 240, be provided with the interval between each bottom wiring hole 242 respectively, each top wiring hole 212 communicates with each bottom wiring hole 242 one-to-one.

Specifically, the top shielding layer 210 is further provided with a top grounding region 211, the bottom shielding layer 240 is further provided with a bottom grounding region 240, and the top grounding region 211 and the bottom grounding region 240 are respectively used for connecting the radio frequency signal to the ground.

It should be noted that, first, when the circuit board 200 is manufactured, the impedance line conforming to the USB impedance is manufactured according to the dielectric constant of the circuit board 200, so that the optimal USB signal communication can be provided for the test of the shielding box, and meanwhile, the optimal test environment can be provided for the test. Further, the USB signal enters the bending channel 110 from the data plug end, and after the USB signal enters the bending channel 110, the line-of-sight transmission of the radio frequency signal entering the bending channel 110 is damaged due to the long wavelength of the radio frequency signal, and a diffraction phenomenon occurs, that is, the radio frequency signal is reflected or deviates from the original propagation path, so that most of the radio frequency signal can be effectively filtered before the radio frequency signal enters the circuit board 200. After the rest small part of the radio frequency signals enter the circuit board 200, the rest small part of the radio frequency signals sequentially pass through the top shielding layer 210, the data transmission layer 220, the ground layer 230 and the bottom shielding layer 240, because the top shielding layer 210 and the bottom shielding layer 240 are respectively provided with the top grounding area 211 and the bottom grounding area 240, and because the top grounding area 211 and the bottom grounding area 240 are electrically connected with the ground, the radio frequency signals can be guided into the ground through the grounding areas, the radio frequency signals are effectively filtered, and therefore the accuracy of the test result of the shielding box can be improved. The top ground region 211 and the bottom ground region 240 have the same shape, and are designed according to the structure of a specific shielding box, and the bending degree of the bending channel 110 is also designed according to the structure of the specific shielding box.

Thus, the USB impedance line is manufactured according to the dielectric constant of the circuit board 200, so that the optimal USB signal communication is provided for the shielding box test; by arranging the bending channel 110 on the box body 100, when a data signal enters from the data plug-in end, due to the fact that the wavelength of the radio-frequency signal is short, diffraction phenomenon can occur when the data signal enters the bending channel 110, sight line transmission is damaged, the effect of filtering most radio-frequency signals is achieved, a large number of radio-frequency signals are prevented from entering the shielding box to interfere with the shielding box, and the accuracy of a test result of the shielding box is further guaranteed; by arranging the top grounding region 211 on the top shielding layer 210 and the bottom grounding region 240 on the bottom shielding layer 240, when the rf signal enters the top shielding layer 210 and the bottom shielding layer 240, the rf signal is guided into the ground through the top grounding region 211 and the bottom grounding region 240, thereby achieving the effect of filtering the rf signal.

Referring to fig. 3 and fig. 5, in one embodiment, a plurality of signal transmission channels 221 are disposed on the data transmission layer 220, and a space is disposed between each of the signal transmission channels 221.

It should be noted that, 2 signal transmission channels 221 are disposed on the data transmission layer 220, and are respectively used for placing the positive electrode of the USB signal line and the negative electrode of the USB signal line, so that data transmission is facilitated, and meanwhile, the signal transmission channels 221 are disposed to avoid the problem of wire winding, shorten the data transmission path, and provide the best transmission channel for signal transmission.

Referring to fig. 3, fig. 4 and fig. 5, in an embodiment, the data transmission layer 220 further has a plurality of conductive holes 222, and each of the conductive holes 222 is in one-to-one correspondence with each of the top wiring holes 212, so that the data transmission layer 220 is electrically connected to the top shielding layer 210.

Referring to fig. 3, 5 and 7, in one embodiment, the ground layer 230 has a plurality of ground holes 231, each ground hole 231 has a space therebetween, and each ground hole 231 is in one-to-one correspondence with each conductive hole 222 and each bottom wiring hole 242, so that the ground layer 230 is electrically connected to the data transmission layer 220 and the bottom shielding layer 240 respectively.

It should be noted that each top wiring hole 212 on the top shielding layer 210 is in one-to-one correspondence with each conductive hole 222 of the data transmission layer 220, each ground hole 231 of the ground layer 230, and each bottom wiring hole 242 of the bottom shielding layer 240, so as to ensure that the layers are electrically connected, and the wiring harnesses connected to each top wiring hole 212 are respectively a power line, a positive electrode of a USB signal line, a negative electrode of a USB signal line, and a ground line.

Referring to fig. 3 and 4 again, in one embodiment, the top shielding layer 210 further has a plurality of top via holes 213, and each top via hole 213 is spaced apart from another top via hole.

Referring to fig. 3 and fig. 7 again, in an embodiment, the bottom shielding layer 240 further has a plurality of bottom via holes 243, and a space is respectively disposed between the bottom via holes 243.

Specifically, each top via hole 213 communicates with each bottom via hole 243 in a one-to-one correspondence.

Referring to fig. 3 again, in one embodiment, the top shielding layer 210 has a plurality of pads, and a space is disposed between each pad.

It should be noted that, the data transmission layer 220 and the ground layer 230 use copper-clad layers, which can reduce the impedance of the ground line and improve the anti-interference capability on one hand; on the other hand, a power supply electrically connected with the shielding box and the ground can form a capacitance effect, and a good effect on filtering radio frequency signals is achieved.

Further, the circuit board 200 is electrically connected to the housing 100 through the conductive foam, and the top shielding layer 210, the data transmission layer 220, the ground layer 230, and the bottom shielding layer 240 are respectively provided with a plurality of ground pads, so as to enhance the signal shielding function of the shielding housing and the conductive function of the entire shielding housing.

Furthermore, the data transmission layer 220 and the ground layer 230 are respectively provided with an area for placing a power line and a ground line, on one hand, the area for placing the power line can provide more power supply paths for the shielding box test due to the shunting function of the circuit board 200; on the other hand, the area that sets up to place the earth connection can carry out the separation to interference signal, improves the degree of accuracy of shielded cell test.

Further, in another embodiment, a plurality of data transmission layers 220 and a plurality of ground layers 230 may be disposed according to the specific structure of the shielding box, on one hand, the transmission speed of the USB signal can be increased; on the other hand, the efficiency of the power supply can be improved, and more power supply paths can be provided.

Compared with the prior art, the utility model has the advantages of it is following:

the USB impedance line is manufactured according to the dielectric constant of the circuit board, so that the optimal USB signal communication is provided for the test of the shielding box; by arranging the bending channel on the box body, when a data signal enters from the data insertion end, due to the wavelength of the radio frequency signal, a diffraction phenomenon can occur when the data signal enters the bending channel, sight line transmission is damaged, the effect of filtering most radio frequency signals is achieved, a large number of radio frequency signals are prevented from entering the shielding box to interfere with the shielding box, and the accuracy of a test result of the shielding box is further ensured; through set up top ground connection district and set up bottom ground connection district at bottom shielding layer at top shielding layer, radio frequency signal can be through leading-in earth in top ground connection district and bottom ground connection district when getting into top shielding layer and bottom shielding layer to reach filtering radio frequency signal's effect.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a module is connected to shielded cell USB which characterized in that includes: the box body is provided with a bending channel, the data insertion end is arranged on the box body, and the circuit board is arranged in the bending channel;

the circuit board comprises a top shielding layer, a data transmission layer, a grounding layer and a bottom shielding layer, wherein one side surface of the data transmission layer is arranged on one side surface of the top shielding layer, one side surface of the grounding layer is arranged on one side surface of the data transmission layer far away from the top shielding layer, and the bottom shielding layer is arranged on one side surface of the grounding layer far away from the data transmission layer;

the top shielding layer is provided with a plurality of top wiring holes, intervals are arranged among the top wiring holes respectively, the bottom shielding layer is provided with a plurality of bottom wiring holes, intervals are arranged among the bottom wiring holes respectively, and the top wiring holes are communicated with the bottom wiring holes in a one-to-one correspondence mode.

2. The USB connection module of claim 1, wherein the data transmission layer has a plurality of signal transmission channels, and a space is disposed between each of the signal transmission channels.

3. The USB connection module of claim 1, wherein the top shielding layer further comprises a top grounding region, and the bottom shielding layer further comprises a bottom grounding region.

4. The USB connection module of claim 1, wherein the data transmission layer further comprises a plurality of conductive holes, and each conductive hole is in one-to-one correspondence with each top wiring hole, so that the data transmission layer is electrically connected to the top shielding layer.

5. The USB connection module of claim 4, wherein the ground layer has a plurality of ground holes, and a space is disposed between each ground hole, and each ground hole is in one-to-one correspondence with each conductive hole and each bottom wiring hole, so that the ground layer is electrically connected to the data transmission layer and the bottom shielding layer.

6. The USB connection module of claim 5, wherein the top shielding layer further defines a plurality of top vias, and a space is disposed between each top via.

7. The USB connection module of claim 6, wherein the bottom shielding layer further defines a plurality of bottom vias, and a space is disposed between each bottom via.

8. The USB connection module of claim 1, wherein each of the top connection holes is in one-to-one correspondence with each of the bottom connection holes.

9. The USB connection module of claim 1, wherein the top shielding layer has a plurality of pads, and a space is disposed between each pad.

10. The USB connection module of claim 1, wherein the data transmission layer is provided in plurality, and each data transmission layer is used for transmitting signals.