CN210518351U

CN210518351U - Radio frequency coupling test shielding box for production line

Info

Publication number: CN210518351U
Application number: CN201922405516.5U
Authority: CN
Inventors: 潘森林; 乐敏; 李洪学
Original assignee: Kunshan Tacu Technology Electron Co ltd
Current assignee: Kunshan Tacu Technology Electron Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-05-12
Anticipated expiration: 2029-12-27

Abstract

The utility model discloses a produce line radio frequency coupling test shielded cell, it is equipped with at least one respectively at test cavity's back wall, left wall, right wall, roof and diapire test antenna makes the whole complete even sampling of formation that has realized the inside longitudinal section of a test box of test antenna to when the model is traded in the switching, need not have according to the position of model adjustment test antenna, following beneficial effect has: 1. the model is converted without adjusting the position of the test antenna, the corresponding conversion time is short, and the efficiency is high; 2. the position of the antenna is not required to be adjusted, the consistency of the whole line is high, the problems of misjudgment, inaccurate power or undetected antenna defects and the like are not easy to occur, the corresponding accuracy and repeatability are higher, the test result is closer to the standard darkroom result, and the defective product can be judged more accurately, so that the probability of defective product delivery and quality complaint caused by the defective product is greatly reduced; 3. the corresponding maintenance cost is low, and the demand on maintenance technicians is reduced.

Description

Radio frequency coupling test shielding box for production line

Technical Field

The utility model relates to a coupling test technical field, in particular to produce line radio frequency coupling test shielded cell.

Background

After a plurality of electronic devices (such as mobile phones, tablet computers, electronic books, etc.) are assembled on a production line, the communication performance of the communication antenna of the electronic device needs to be tested.

Currently, a production line rf coupling test shielding box (see, for example, the embodiment disclosed in the utility model with chinese patent publication No. CN 207992278U) is widely used for testing a communication antenna of an electronic device.

However, the existing production line radio frequency coupling test shielding box generally has the following problems: 1. the existing production line coupling test box needs to adjust the position of a test antenna according to the type when the type is converted, the conversion time is long, and the efficiency is low; 2. the positions of the test antennas need to be manually adjusted, the positions of all machines are difficult to adjust to be consistent, the consistency of the whole line is poor, the problems of misjudgment, inaccurate power or undetected antenna defects and the like easily occur, and therefore defective products are easily discharged and quality customers are easily complained; 3. maintenance costs are high and more maintenance technicians are required. 4. The existing production line radio frequency coupling test shielding box mainly aims at testing of 4G electronic equipment (such as a 4G mobile phone), the 3G or 4G electronic equipment generally only has 2-4 communication antennas, and correspondingly, the existing production line radio frequency coupling test shielding box is also designed to be capable of hanging 2-4 test antennas at most. However, with the advent of the 5G era, more (e.g., more than 10) communication antennas are generally configured on 5G electronic devices, and therefore, the existing production line rf coupling test shielding boxes cannot complete the test of the 5G electronic devices at one time, and a plurality of (e.g., 3) existing production line rf coupling test shielding boxes need to complete the test of the corresponding communication antennas of the 5G electronic devices, respectively, and the step-by-step completion mode has the problems of high test cost and low efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a produce line radio frequency coupling test shielded cell aims at improving efficiency of software testing and the test accuracy degree to reduce testing cost.

In order to achieve the above object, the utility model provides a produce line radio frequency coupling test shielded cell, include:

the testing device comprises a box body, a testing device and a control device, wherein a testing chamber is defined in the box body;

the rear wall, the left wall, the right wall, the top wall and the bottom wall of the test chamber are respectively provided with at least one test antenna;

the radio frequency control switch is electrically connected with the plurality of test antennas and is used for controlling the test antennas to send and receive radio frequency signals; and

and the tray is positioned in the test chamber and used for placing the tested piece.

The utility model discloses technical scheme is equipped with at least one respectively at test chamber's back wall, left wall, right wall, roof and diapire test antenna makes the whole complete even sampling of formation of having realized the inside longitudinal section of a test box of test antenna to when the model is changed in the switch production, need not have following beneficial effect according to the position of model adjustment test antenna: 1. the model is converted without adjusting the position of the test antenna, the corresponding conversion time is short, and the efficiency is high; 2. the position of the antenna is not required to be adjusted, the consistency of the whole line is high, the problems of misjudgment, inaccurate power or undetected antenna defects and the like are not easy to occur, the corresponding accuracy and repeatability are higher, the test result is closer to the standard darkroom result, and the defective product can be judged more accurately, so that the probability of defective product delivery and quality complaint caused by the defective product is greatly reduced; 3. the corresponding maintenance cost is low, and the demand on maintenance technicians is reduced.

Drawings

Fig. 1 is a perspective view of the present invention;

fig. 2 is a longitudinal sectional view of the present invention;

FIG. 3 is a schematic view of the interior of the testing chamber after the top wall of the inner housing is removed;

FIG. 4 is a schematic view of the assembly of the test antenna with the bracket;

FIG. 5 is a schematic view of the tray and the limiting corner block;

fig. 6 is an enlarged detail view of a portion a of fig. 5.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indicators (such as … …, upper, lower, left, right, front, back, top, bottom, inner, outer, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial) are involved in the embodiments of the present invention, the directional indicators are only used to explain the relative position, motion, etc. of the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicators are changed accordingly.

In addition, if there is a description relating to "first" or "second", etc. in the embodiments of the present invention, the description of "first" or "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a produce line radio frequency coupling test shielded cell.

In the embodiment of the present invention, as shown in fig. 1 to 6, the radio frequency coupling test shielding box for production line includes a box body 1, a plurality of test antennas 2, a radio frequency control switch (not shown) and a tray 3.

The testing chamber capable of surrounding the tested piece 100 is limited in the box body 1, the testing chamber is internally provided with a rear wall 101, a left wall 102, a right wall 103, a top wall 104, a bottom wall 105 and a front wall 106, and the rear wall 101, the left wall 102, the right wall 103, the top wall 104 and the bottom wall 105 of the testing chamber are respectively provided with at least one testing antenna 2, so that the testing antenna 2 integrally forms a complete and uniform sampling of an internal longitudinal section of the testing box body 1, and therefore when the model is converted (namely the tested piece), the position of the testing antenna 2 does not need to be adjusted according to the model. The radio frequency control switch is electrically connected with the plurality of test antennas 2 and used for controlling the test antennas 2 to send and receive radio frequency signals, and the radio frequency control switch is in the prior art and is not repeated for specific structures and working principles. The tray is located in the test chamber for placing the piece under test 100.

It is understood that the number of the test antennas 2 respectively disposed on the rear wall 101, the left wall 102, the right wall 103, the top wall 104 and the bottom wall 105 of the test chamber may be determined according to the test requirement, for example, when the tested object 100 is a 3G or 4G electronic device, the number of the communication antennas is less, and the number of the corresponding test antennas 2 is less. For example, only one test antenna 2 may be provided on each of the test chamber rear wall 101, left wall 102, right wall 103, top wall 104, and bottom wall 105; if the tested object 100 is a 5G electronic device, there are more communication antennas, and more corresponding test antennas 2 can be set. Illustratively, as shown in fig. 2, six test antennas 2 are disposed on the rear wall of the test chamber, two test antennas 2 are disposed on the left wall 102 and the right wall 103 of the test chamber, three test antennas 2 are disposed on the top wall 104 and the bottom wall 105 of the test chamber, and adjacent test antennas 2 of the rear wall 101, the left wall 102, the right wall 103, the top wall 104 and the bottom wall 105 of the test chamber are preferably orthogonal. So as to form an orthogonal stirring mode and achieve the electromagnetic reverberation effect, thereby replacing the traditional mechanical stirring mode with a complicated structure.

Preferably, the test antennas 2 arranged on the top wall 104 and the bottom wall 105 of the test chamber and the test antennas 2 arranged on the left wall 102 and the right wall 103 of the test chamber are respectively and symmetrically arranged, and the test antenna 2 arranged on the rear wall of the test chamber is positioned in the common middle position of the test antennas 2 arranged on the left wall 102, the right wall 103, the top wall 104 and the bottom wall 105 of the test chamber on the front projection plane of the test antenna 2.

In the embodiment of the present invention, the shape and the structure of the test antenna 2 may have various embodiments, such as adopting the existing circular sheet, the saw-tooth sheet, and the like. The following embodiment may also be adopted, as shown in fig. 4, the test antenna 2 is designed as a planar water drop type structure (or a water drop sheet structure), and test data shows that the bandwidth of the planar water drop type test antenna 2 is 600M-6G, the standing-wave ratio is less than 2.5, and the planar water drop type test antenna has the advantages of ultra-wide frequency, high performance, and flat gain.

In the embodiment of the present invention, the structure and material of the tray 3 have various embodiments, for example, the prior art can be adopted, and the tray 3 made of the vacuum-like foam material with ultra-low dielectric constant (dielectric constant <1.1) can also be adopted. The tray 3 may be sized according to the testing requirements (e.g., the size of the tested pieces 100, the number of tested pieces 100 to be tested at a time, etc.). Preferably, the tray 3 has a surface length and width of 300-500 mm, preferably 400 x 400mm, which allows a plurality (e.g., four) of the test pieces 100 to be placed at intervals at the same time for testing. Tray 3 can be one, also can be a plurality of (like two), and when a plurality of, a plurality of trays 3 interval from top to bottom sets up, exemplarily, when tray 3 is two, based on above-mentioned embodiment, eight tested pieces 100 can be placed simultaneously altogether to two trays 3, place a plurality of modes of carrying out the test and can increase substantially production efficiency.

Preferably, the tray 3 is located at a position right in front of the test antenna 2 arranged on the rear wall 101 of the test chamber, and is located at a common middle position of the test antenna 2 arranged on the left wall 102, the right wall 103, the top wall 104 and the bottom wall 105 of the test chamber on a front projection surface of the tray 3, and can be adjusted within 3cm from top to bottom.

It can be understood that the tested pieces 100 are laid on the tray 3, the distance between the tested pieces 100 is kept above 10CM, each tested piece 100 is provided with an adjustable limiting piece around to position the tested piece 100, and the position of the limiting piece can be adjusted correspondingly when switching different models.

Specifically, the tray 3 may form a placement area for positioning the tested piece 100 by forming a limiting groove on the top surface, or form a placement area for positioning the tested piece 100 by disposing a limiting member on the top surface, in a preferred embodiment, the top surface of the tray 3 is flat, four limiting corner blocks 31 (i.e., the limiting members) are disposed at positions corresponding to each placement area, and the inner peripheries of the four limiting corner blocks jointly enclose the placement area to position the tested piece 100 placed therein.

Further, four corresponding limiting angle blocks are slidably mounted on the tray 3 to adjust the size of the rectangular placing area, so that the placing requirements of the tested pieces 100 with different sizes are met, and locking pieces (such as plastic bolts) are used for locking the limiting angle blocks 31 after the positions are adjusted on the tray 3. Specifically, the position that tray 3 corresponds every spacing hornblock is equipped with many spouts 32 along the width direction interval distribution who places the district, every the spout 32 extends along the length direction who places the district, and when the length direction (also for the length direction who places the district) removal spacing hornblock 31 of spout 32, the adjustable length of placing the district, the position of spacing hornblock 31 is adjusted along the interval direction (also for the width direction who places the district) of spout 32, and the adjustable width of placing the district, spacing hornblock 31 accessible plastic bolt locks in the relevant position of spout 32. Furthermore, the limiting angle block 31 is provided with a through groove 311 extending along the interval direction of the sliding groove 32, the rod part of the plastic bolt (not shown) passes through the through groove 311 and locks the limiting angle block 31 in the corresponding sliding groove 32, and the width of the placing area can be further adjusted by arranging the through groove 311.

Specifically, the rear wall 101, the left wall 102, the right wall 103, the top wall 104, the bottom wall 105 and the front wall 106 of the test chamber are all made of metal materials with smooth surfaces and good conductivity, such as aluminum sheet 6061 with a thickness of 3 mm.

In the embodiment of the present invention, there are various embodiments for the installation mode of the tray 3 and the structure of the box 1, for example, the tray 3 can adopt a drawer type tray (such as the drawer type embodiment disclosed by the utility model with the reference publication number of CN 207992278U "), the drawer type tray 3 is installed on the front wall of the box 1, and is equipped with the cylinder 4, so as to realize the automatic connection between the automatic in-and-out test box 1 and the external manipulator, and realize the automatic taking and placing of the tested piece 100. The box body 1 generally comprises an inner shell 10 and an outer shell 11 surrounding the inner shell 10, wherein the inner shell 10 is internally defined with the test chamber, handles 5 are arranged on two sides of the outer shell 11 (preferably two handles 5 are arranged on two sides respectively) for convenient carrying, an inner channel and an outer channel (not shown) for the tray 3 to enter are arranged on the front walls of the inner shell 10 and the outer shell 11, after the drawer is closed, the inner channel is closed by a drawer door panel 30 of the drawer type tray 3, the front wall surface of the drawer door panel 30 is flush with the front wall surface of the outer shell 11, the upper edge of the front wall of the outer shell 11 is designed in an arc shape, the box body is attractive and tidy, and the front wall of the outer shell 11 is provided with a tested piece 100 test state indicator.

In the embodiment of the present invention, the position of the rear wall 101, the left wall 102, the right wall 103, the top wall 104 and the bottom wall 105 of the testing chamber corresponding to the testing antenna 2 is fixedly provided with the bracket 20, the bracket 20 is made of plastic (such as ABS) with a preferred low dielectric constant, the testing antenna 2 is installed on the bracket 20, and is electrically connected to the rf connector 22 disposed on the outer wall (preferred rear wall) of the box body 1. Specifically, the test antenna 2 is mounted in various ways, and in a preferred embodiment, the test antenna 2 (preferably, the middle rear portion) is provided with a plurality of fixing holes 21 and fixed to the bracket 20 by screws (preferably, plastic screws). The number of the fixing holes 21 is preferably four, and the fixing holes are distributed in a rectangular shape.

In the embodiment of the present invention, the testing chamber is preferably rectangular, and the length of the testing chamber (i.e. the distance between the front wall and the back wall of the test) is 820-850 mm, such as 820mm, 830mm or 850 mm; the width (i.e. the distance between the left wall 102 and the right wall 103 of the test chamber) is 550-650 mm, such as 550mm, 600mm or 650 mm; the height (i.e. of the test chamber) is 500-700 mm, such as 500mm, 600mm or 700 mm.

Further, the utility model discloses have and prevent pressing hand induction system (not shown), take place the maloperation when operating personnel to when the condition that the hand was pushed down by the drawer door plant appears, prevent pressing the sense that the hand induction system can be quick, and order about the quick automatic bullet of cylinder drive drawer door plant and open.

Particularly, the utility model comprises a USB interface, a RS232 interface and a plurality of control interfaces of network ports, and the control of the inlet and outlet of the drawer type tray, the state of the indicating lamp, the hand-pressing prevention device and the radio frequency control switch can be carried out through the USB interface and the RS232 interface; the net gape can link the manipulator server, realizes the high-efficient butt joint that the automation scheme reaches, compares the control panel of single serial ports and has more advantages.

Use the utility model discloses when carrying out the test of being surveyed piece 100, will be surveyed piece 100 and supporting test instrument (not shown in the figure), test software earlier and establish synchronization and communication after, combine control and algorithm interface through test software, control radio frequency switch will be a plurality of in proper order test antenna 2 (as first communicate between 2 to the sixteenth test antenna 2) switch (as to how to control the intercommunication and switch, for prior art, no longer give unnecessary details here, and on the same grounds, test software is not the utility model discloses a claimed technical scheme, it can adopt prior art) to record a plurality ofly in proper order through test instrument by the transmitted Power (TX Power) or the received level (RSSI) of being surveyed piece 100, finally calculate a total transmitted Power or received Power result through the algorithm, and export for test software.

Specifically, the test work includes the steps of: a. before batch testing, a golden machine which is measured by a standard laboratory darkroom and recorded with power values of various frequency points is sequentially placed in each placing area on the tray 3 for calibration measurement, the total transmitting power and receiving power results obtained by testing the golden machine in each positioning area are compared with the darkroom recorded values of the golden machine, the difference value is line loss, and the line loss is recorded in a line loss calibration table (the process is generally automatically completed by testing software); b. after the calibration of the gold machine, the radio frequency coupling power index test of the tested piece 100 is carried out, and finally the test result is obtained. Adopt the utility model discloses any one of the transmission or the received power value of being surveyed piece 100 that measure is usually within 2dB with laboratory darkroom measurement result difference. It can be understood that when a plurality of tested pieces 100 are tested simultaneously, the testing process of each tested piece 100 in the reverberation box is the same, and the testing sequence, the control of the tested pieces 100 and the reading of information are all governed by the testing software.

It should be noted that the above-mentioned tested piece 100 can be electronic devices such as mobile phone, tablet computer and electronic book, the utility model discloses support tested piece 100 frequency preferred 690 and 6000M, box 1 isolation >60 dB.

The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.

Claims

1. The utility model provides a produce line radio frequency coupling test shielded cell which characterized in that includes:

2. The production line radio frequency coupling test shielding box of claim 1, wherein: the test chamber comprises six test antennas arranged on the rear wall of the test chamber, two test antennas arranged on the left wall and the right wall of the test chamber, three test antennas arranged on the top wall and the bottom wall of the test chamber, and adjacent test antennas on the rear wall, the left wall, the right wall, the top wall and the bottom wall of the test chamber are orthogonal and vertical.

3. The production line radio frequency coupling test shielding box of claim 2, wherein: the test antennas arranged on the top wall and the bottom wall of the test chamber and the test antennas arranged on the left wall and the right wall of the test chamber are respectively and symmetrically arranged.

4. The production line radio frequency coupling test shielding box of claim 1, wherein: the test antenna is of a plane water drop type structure.

5. The production line radio frequency coupling test shielding box of claim 1, wherein: the tray is made of vacuum-like foam materials with ultralow dielectric constant, and a plurality of tested pieces can be placed at intervals at the same time for testing.

6. The production line radio frequency coupling test shielding box of claim 1, wherein: the tray is located at the position right in front of the test antenna arranged on the rear wall of the test chamber, and the common middle position of the test antennas arranged on the left wall, the right wall, the top wall and the bottom wall of the test chamber is located on the front projection surface of the tray.

7. The production line radio frequency coupling test shielding box of claim 1, wherein: the top surface of tray is equipped with at least one and places the district, and the top surface of tray corresponds every position of placing the district and is equipped with four spacing hornblocks that are the rectangle and distribute, and the inner periphery of four spacing hornblocks encloses into a rectangle jointly place the district.

8. The production line radio frequency coupling test shielding box of claim 7, wherein: the position that the tray corresponds every spacing hornblock is equipped with many spouts along the width direction interval distribution who places the district, every the spout extends along the length direction who places the district, and spacing hornblock locks in the relevant position of spout through the plastics bolt.

9. The production line radio frequency coupling test shielding box of claim 8, wherein: the spacing angle block is provided with a through groove extending along the interval direction of the sliding groove, and the rod part of the plastic bolt penetrates through the through groove and locks the spacing angle block in the corresponding sliding groove.

10. The in-line rf coupling test shielding cage of any of claims 1-9, wherein: the position that wall, left wall, right wall, roof and diapire correspond the test antenna behind the test chamber sets firmly the support, a plurality of fixed orificess have been seted up to the test antenna, and the department passes through the screw with the test antenna in fixed orificess is fixed in the support to with test antenna and the radio frequency connector electric connection who locates the box outer wall.