CN216870637U

CN216870637U - Radio frequency test shielding box

Info

Publication number: CN216870637U
Application number: CN202220344746.4U
Authority: CN
Inventors: 余守军; 秦永昌; 贺智
Original assignee: Shenzhen Welltest Technology Co ltd
Current assignee: Shenzhen Welltest Technology Co ltd
Priority date: 2022-02-19
Filing date: 2022-02-19
Publication date: 2022-07-01
Anticipated expiration: 2032-02-19

Abstract

The application discloses a radio frequency test shielding box which comprises a box body, a needle support plate assembly, a jig frame and a front door module, wherein the box body is used for providing a shielding test environment, the needle support plate assembly is positioned in an inner cavity of the box body and is used for placing a product to be tested and a probe, the jig frame is installed in the box body and drives the needle support plate assembly to extend out of a square hole correspondingly formed in the box body to receive materials, and the front door module covers the square hole of the box body; the box body, the jig frame and the front door module are correspondingly arranged; the pin carrier plate assembly is correspondingly and adaptively arranged according to the product to be detected, and the pin carrier plate assembly is detachably connected with the jig frame; the needle carrier plate assembly comprises a lower needle plate and an upper needle plate which are used for placing the probes and a carrier plate which is used for placing a product to be tested. This application has strengthened the holistic shielding effectiveness of shielded cell, and when the test product updates the upgrading, only needs the modularization to change the needle carrier plate subassembly and can carry out the adaptation, and it is convenient to change, has reduction in production cost, improves production efficiency's effect.

Description

Radio frequency test shielding box

Technical Field

The application relates to the technical field of radio frequency test equipment, in particular to a radio frequency test shielding box.

Background

At present, wireless electronic products such as smart phones, tablet computers and intelligent household appliances are widely applied to aspects of life of people, a series of function detection needs to be carried out on the wireless electronic products in production and manufacturing so as to ensure normal use of product functions, and radio frequency testing is an important detection item.

When testing a radio frequency product, the product is generally placed in a shielding box capable of shielding external electromagnetic waves for testing. The shielding box in the related art comprises a box body and an internal testing jig, but electronic products are changed day by day, and when testing products are changed, the whole shielding box can only be changed to be matched, so that the production cost is increased.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects that the shielding box in the related art can only be integrally replaced when a test product is changed, and the adaptability is not high, the application provides the radio frequency test shielding box.

The application provides a radio frequency test shielding case adopts following technical scheme:

a radio frequency test shielding box comprises a box body, a needle support plate assembly, a jig frame and a front door module, wherein wave absorbing cotton is adhered to the inner wall of the box body and provides a shielding test environment, the needle support plate assembly is positioned in an inner cavity of the box body and is used for placing a product to be tested and a probe, the jig frame is installed in the box body and drives the needle support plate assembly to extend out of a square hole correspondingly formed in the box body to receive materials, and the front door module covers the square hole of the box body; the box body, the jig frame and the front door module are correspondingly arranged; the pin carrier plate assembly is correspondingly and adaptively arranged according to the product to be detected, and the pin carrier plate assembly is detachably connected with the jig frame; the needle support plate assembly comprises a lower needle plate, a support plate and an upper needle plate, wherein the lower needle plate is arranged on the jig frame and used for placing the test probes, the support plate is arranged on the lower needle plate and used for placing the product to be tested, the upper needle plate is located on one side of the support plate and is arranged on the jig frame and used for placing the probes, and the support plate is located on the other side of the support plate.

By adopting the technical scheme, the box provides the shielding environment meeting the test requirements for the test product, the pin carrier plate assembly corresponds to the test product, when the test product is updated, the pin carrier plate assembly is only required to be replaced to carry out adaptation, the replacement is convenient, the production cost is reduced, and the production efficiency is improved.

Optionally, a spring is fixedly connected to the lower needle plate, and the other end of the spring is fixedly connected to the carrier plate; equal-height bolts for limiting the carrier plate to be in a horizontal state penetrate through the lower needle plate and the carrier plate.

Through adopting above-mentioned technical scheme, the spring provides holding power and the elasticity that resets after the test is accomplished for the support plate, and the spring and wait high bolt cooperation, has guaranteed the horizontal position of support plate, and simple structure and practical effective have further reduced the required cost of test.

Optionally, the jig frame includes a base plate installed in the box, a telescopic portion installed on the base plate and connected with the lower needle plate for enabling the lower needle plate and the support plate to horizontally extend out of the box, and a jacking portion installed on the base plate and connected with the upper needle plate for enabling the upper needle plate to lift in the vertical direction.

Through adopting above-mentioned technical scheme, lower needle bar and support plate stretch out the box under the drive of pars contractilis and connect the material, connect the material to accomplish the back and reset, go up the needle bar and descend under the drive of lift portion and begin the test, made things convenient for getting of the product that awaits measuring and put, improved work efficiency.

Optionally, the opposite-insertion guide shaft is installed on one side, facing the carrier plate, of the upper needle plate, the opposite-insertion shaft sleeve is installed on the carrier plate, and the opposite-insertion guide shaft is inserted into the opposite-insertion shaft sleeve in the descending process of the upper needle plate.

By adopting the technical scheme, when the upper needle plate descends, the opposite insertion guide shaft is inserted into the opposite insertion shaft sleeve, the guide reinforcing effect is achieved on the movement of the upper needle plate, the relative position of the upper needle plate after movement and the support plate is ensured, and the testing accuracy is ensured.

Optionally, the front door module comprises a door frame which is installed on the outer side of the box body and arranged around the square hole of the box body, a front door which is provided with a clearance groove and covers the square hole of the box body and the door frame, and conductive cotton which is filled between the front door and the door frame to form a closed loop.

Through adopting above-mentioned technical scheme, form closed circuit between qianmen and the door frame, cover the square hole of box and close, strengthened the shielding function of preventing of box, provide the shielding environment who satisfies the test demand for the product that awaits measuring.

Optionally, an overhanging overlapping plate is arranged in the front door clearance groove, the overlapping plate is positioned at two sides of the door frame, a part of the conductive cotton is attached to the overlapping plate and is provided with an opposite abutting part to form a clamping opening smaller than the door frame, and the clamping opening of the door frame abutting part is spread and matched in an extrusion manner; one side of the door frame facing to the front door is extruded on the other part of the conductive cotton attached to the front door avoiding groove.

By adopting the technical scheme, the conductive cotton forms a high-reliability conductive loop between the front door and the door frame, and the penetration of external electromagnetic waves from the square hole of the box body is reduced, so that the interference of the internal signals in the test process is reduced, and the shielding effectiveness of the shielding box meets the test requirement.

Optionally, box one end is uncovered, and open end lid has closed and has been opened and has been close and have the upper cover plate that inhales the ripples cotton towards one side laminating of box.

By adopting the technical scheme, the upper cover plate can be opened and closed, so that the maintenance and the repair of the interior of the box body at the later stage are facilitated; when the upper cover plate is closed, the wave-absorbing cotton attached to the inner side of the upper cover plate and the wave-absorbing cotton inside the box body form a whole, so that a good wave-absorbing shielding function is ensured.

Optionally, a control box for controlling the movement of the jig frame is installed on one side of the box body, and a serial port communicated with the manipulator information is further arranged in the control box.

By adopting the technical scheme, the movement of the jig frame is automatically controlled, so that the production efficiency is improved; when the jig frame extends out to receive materials, manual feeding can be achieved through manual operation, and automatic feeding can also be achieved through information communication with the manipulator. The manual-automatic integrated function greatly improves the adaptability of the shielding box to different use working conditions, and further improves the production efficiency.

Optionally, gratings are installed on two sides of the front door module.

Through adopting above-mentioned technical scheme, the grating is installed in qianmen module both sides, plays the monitoring effect to the safe motion of qianmen module, and prevents that operating personnel from the error and causing the incident, has guaranteed the fail safe nature of shielded cell work.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the box body, the jig frame and the front door module are correspondingly arranged, the needle support plate assembly is correspondingly and adaptively arranged according to a product to be detected, and the needle support plate assembly is detachably connected with the jig frame; after the test product is updated and upgraded, the shielding box can be adapted only by correspondingly replacing the pin carrier plate assembly, the replacement is convenient, the production cost is reduced, and the production efficiency is improved.

2. Through setting up the spring and waiting high bolt, the spring provides holding power, motion space and the elasticity that resets after the test is accomplished for the support plate, and the spring and wait high bolt cooperation, has guaranteed the horizontal operating position of support plate, and simple structure and practical effective have further reduced the required cost of test.

3. Through setting up door frame, qianmen and the electrically conductive cotton that forms the clamp mouth, formed the electrically conductive return circuit of high reliability between qianmen and door frame, reduced the penetration of outside electromagnetic wave from box side hole department to reduce the interference to inside signal in the test process, make the shielding effectiveness of shielded cell satisfy the test requirement.

Drawings

FIG. 1 is a cross-sectional view of a radio frequency test shielding cage in an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a jig frame according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural view of a needle carrier plate assembly in an embodiment of the present application;

FIG. 4 is a schematic view of the mounting of the jig frame and the pin carrier plate assembly in the embodiment of the present application;

FIG. 5 is a schematic view of a fitting structure of a jig frame and a needle carrier assembly according to an embodiment of the present disclosure;

fig. 6 is a sectional view of a front door module in an embodiment of the present application.

Description of reference numerals: 1. a box body; 2. an upper cover plate; 3. a jig frame; 31. a substrate; 32. a telescopic part; 321. a vertical plate; 322. a track; 323. a telescopic platform; 324. a baffle plate; 325. a telescopic cylinder; 326. reinforcing rib plates; 33. a jacking portion; 331. jacking a platform; 332. jacking a cylinder; 333. a linear bearing; 334. a linear guide shaft; 335. a top plate; 4. a needle carrier plate assembly; 41. a lower needle plate; 42. a carrier plate; 421. an inward concave placing groove; 43. an upper needle plate; 431. a pressing block; 44. a spring; 45. an equal-height bolt; 46. a limiting guide shaft; 47. a limiting shaft sleeve; 48. oppositely inserting the guide shafts; 49. oppositely inserting the shaft sleeves; 5. a front door module; 51. a door frame; 52. a front door; 521. a position avoiding groove; 522. a lap plate; 53. conductive cotton; 531. an abutting portion; 6. a control box; 7. a communication panel; 8. a grating; 9. and (3) a probe.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses radio frequency test shielded cell, refers to fig. 1, including box 1, upper cover plate 2, tool frame 3, needle support plate subassembly 4, preceding door module 5, control box 6 and communication panel 7. The box 1 is the open box-like cavity structure in one side, adopts the metal panel beating that electric conductive property is good to constitute, all has laminated on the box 1 inner wall to inhale the ripples cotton, absorbs the electromagnetic wave reflection, reduces the interference of outside electromagnetic wave to test components and parts in the box 1. The upper cover plate 2 is closed at the open end of the box body 1 in a closed manner, can be opened and closed, is convenient for maintenance and repair of the interior of the box body 1, and the inner wall of the upper cover plate 2 is provided with wave-absorbing cotton to ensure the overall shielding function of the box body 1.

The jig frame 3 is arranged inside the box body 1 and used for placing the needle support plate assembly 4 and providing power output, the needle support plate assembly 4 is arranged on the jig frame 3 and used for placing a product to be tested and a probe 9 for testing, the needle support plate assembly 4 extends out of the box body 1 under the power provided by the jig frame 3 to receive materials, and retracts into the box body 1 to test the material to be tested. One side of the box body 1 is correspondingly provided with a square hole for the needle carrier plate component 4 to pass in and out. The front door module 5 is mounted on the jig frame 3 and linearly reciprocates together with the jig frame 3, and the front door module 5 covers the outer side of the square hole of the box body 1 to prevent external signals from entering the box body 1.

Grating 8 is installed to front door module 5 both sides, prevents that operating personnel from appearing the maloperation, protects operating personnel's safety. The control box 6 is arranged on one side of the box body 1, which is deviated from the upper cover plate 2, and a control unit is arranged inside the control box to control the operation of the front door module 5 and the internal jig frame 3. And a serial port communicated with the manipulator information is also arranged in the control box 6 and can be matched with the manipulator to work together. The communication panel 7 is arranged on one side, departing from the front door module 5, of the box body 1, a communication interface is arranged on the communication panel 7 and used for transmitting test data out, and the communication interface of the communication panel 7 is processed by adopting an electromagnetic filtering principle.

Referring to fig. 2, jig frame 3 includes base plate 31, pars contractilis 32 and jacking portion 33, base plate 31 horizontal installation deviates from the inner wall of open end on box 1, pars contractilis 32 includes riser 321, riser 321 sets up to two, two riser 321 symmetric distributions and perpendicular installation are on base plate 31, track 322 is respectively installed to one side that riser 321 deviates from base plate 31, track 322 length direction corresponds the setting with the square hole position of box 1, horizontal installation has flexible platform 323 on the track 322, baffle 324 is installed to one side that flexible platform 323 is close to box 1 square hole, baffle 324 one side position in the middle and flexible platform 323 rigid coupling, the position that baffle 324 one side is close to base plate 31 is connected with flexible cylinder 325, flexible cylinder 325 horizontal installation is on base plate 31. A reinforcing rib plate 326 is fixedly connected to a part of one side of the baffle plate 324 far away from the base plate 31, and the reinforcing rib plate 326 is arranged on a connecting vertical surface of the baffle plate 324 and the telescopic platform 323, so as to reinforce the stable connection of the baffle plate 324 and the telescopic platform 323.

The jacking portion 33 comprises a jacking platform 331, the jacking platform 331 is located on one side, away from the base plate 31, of the telescopic platform 323, a jacking cylinder 332 is fixedly connected to one side, facing the telescopic platform 323, of the jacking platform 331, the jacking cylinder 332 is installed on the base plate 31, piston rods of the jacking cylinder 332 are vertically arranged, the jacking cylinders 332 are distributed on two sides of the telescopic platform 323, the jacking platform 331 is a rectangular platform, linear bearings 333 are installed at four corners respectively, a linear guide shaft 334 vertically penetrates through the linear bearings 333, one end of the linear guide shaft 334 is fixedly connected to the base plate 31, and the other end of the linear guide shaft 334 extends out of the jacking platform 331 and is provided with a top plate 335; the four corners of the top plate 335 are fixedly connected with the linear guide shaft 334, so as to connect and reinforce the linear guide shaft 334. The linear guide shaft 334 and the linear bearing 333 cooperate to guide and reinforce the movement of the jacking platform 331 relative to the base plate 31.

The base plate 31 is used as an installation base, the telescopic cylinder 325 is installed on the base plate 31, and the baffle 324 drives the telescopic platform 323 to extend out of or retract into the box body 1 from a square hole of the box body 1 along the direction of the track 322 to do horizontal linear reciprocating motion; the jacking cylinder 332 is arranged on the base plate 31 and drives the jacking platform 331 to do vertical linear reciprocating motion in the box body 1 along the direction of the linear guide shaft 334; the telescopic platform 323 and the jacking platform 331 both move relative to the base plate 31 without interfering with each other.

Referring to fig. 3 and 4, the needle carrier plate assembly 4 includes a lower needle plate 41, a carrier plate 42 and an upper needle plate 43, one side of the lower needle plate 41 is mounted on one side of the telescopic platform 323 departing from the base plate 31 through bolt connection, and the lower needle plate 41 is mounted with probes 9 required for testing; the carrier plate 42 is a plate-shaped platform, and the carrier plate 42 is provided with an inward concave placing groove 421 corresponding to the product to be tested and used for placing the product to be tested; the concave placement groove 421 of the carrier plate 42 is provided with a limiting protrusion, the limiting protrusion is arranged corresponding to the through hole inherent on the product to be tested, and positioning and installation are realized when the product to be tested is placed.

The carrier plate 42 is located on the side of the lower needle plate 41 facing away from the telescopic platform 323 and is connected to the lower needle plate 41 by means of springs 44. One side of the spring 44 is fixedly connected to the lower needle plate 41, and the other side is fixedly connected to the carrier plate 42, and the carrier plate 42 is supported by the elastic force. The carrier plate 42 is provided with a countersunk hole, the lower needle plate 41 is provided with a threaded hole, and an equal-height bolt 45 is correspondingly penetrated for limiting, and the equal-height bolt 45 ensures the levelness of the carrier plate 42 under the elastic force of the spring 44. One side of the support plate 42 facing the lower needle plate 41 is fixedly connected with a limiting guide shaft 46, the limiting guide shaft 46 is vertically arranged, a limiting shaft sleeve 47 is installed at the corresponding position of the lower needle plate 41, and the limiting guide shaft 46 penetrates through the limiting shaft sleeve 47 to play a limiting and guiding role in the movement of the support plate 42 relative to the vertical direction of the lower needle plate 41. The lower needle plate 41 and the carrier plate 42 move horizontally and linearly along with the telescopic platform 323, and the carrier plate 42 can reciprocate vertically relative to the lower needle plate 41.

Go up faller 43 and install on jacking platform 331 through bolted connection, jacking platform 331 has seted up the ladder groove in the middle for go up faller 43 embedding installation. The upper needle plate 43 is provided with a probe 9 required for testing, and the upper needle plate 43 and the lifting platform 331 make linear vertical lifting movement.

A pressing block 431 is fixedly connected to one side of the upper needle plate 43 facing the carrier plate 42, and when the upper needle plate 43 moves towards the carrier plate 42, the pressing block 431 is pressed against the carrier plate 42 and pushes the carrier plate 42 to move towards the lower needle plate 41 together. The opposite insertion guide shaft 48 is installed on one side of the upper needle plate 43 facing the carrier plate 42, the opposite insertion shaft sleeve 49 is installed on the corresponding position on the carrier plate 42, the opposite insertion guide shaft 48 is inserted into the opposite insertion shaft sleeve 49 along with the downward movement of the upper needle plate 43, and the positioning and guiding effects are achieved on the positions of the upper needle plate 43 and the carrier plate 42.

Referring to fig. 4 and 5, the probes 9 on the upper and

lower needle plates

43 and 41 are both disposed corresponding to the product to be tested and cannot contact the product to be tested before the test is started. The lower needle plate 41 and the support plate 42 extend out of the box body 1 to receive materials under the action of the telescopic air cylinder 325, and retract into the box body 1 after a product to be detected is installed on the support plate 42; after the test is started, the upper needle plate 43 descends under the action of the jacking cylinder 332, the opposite insertion guide shaft 48 is inserted into the opposite insertion shaft sleeve 49, and the pressing block 431 is pressed on the carrier plate 42 and continuously descends for a certain distance until the probes 9 on the lower needle plate 41 penetrate through the corresponding openings on the carrier plate 42 and abut against the product to be tested; after the test is completed, the upper needle plate 43 is lifted, and the carrier plate 42 is reset by the elastic force of the spring 44.

Referring to fig. 6, the front door module 5 includes a door frame 51, a front door 52, and conductive wool 53, the door frame 51 is mounted outside the square hole of the cabinet 1 by bolt connection, and the door frame 51 is disposed around the square hole of the front door 52. The front door 52 is fixedly connected to one side of the baffle 324 departing from the telescopic part 32 in the jig frame 3, the baffle 324 partially extends out of the square hole of the box body 1, and the front door 52 is positioned outside the box body 1 and covers the square hole of the box body 1. The front door 52 is provided with a clearance groove 521 at a position corresponding to the door frame 51 at one side facing the box body 1, and the door frame 51 is positioned in the clearance groove 521 of the front door 52.

The avoiding groove 521 of the front door 52 is internally provided with a lapping plate 522 protruding outwards towards the box body 1, the lapping plate 522 is distributed at two sides of the door frame 51, the conductive cotton 53 is attached to the lapping plate 522 and the inner wall of the avoiding groove 521 of the front door 52, the conductive cotton 53 on the lapping plate 522 surrounds the lapping plate 522 and is provided with a protruding abutting part 531, the abutting part 531 at two sides of the door frame 51 relatively extends out to form a clamping opening smaller than the door frame 51, the conductive cotton 53 has certain elastic deformation capacity, and when the front door 52 is closed, the clamping opening of the lapping part of the conductive cotton 53 is extruded by the door frame 51 and abuts against the door frame 51. The side of the door frame 51 facing the front door 52 presses the conductive cotton 53 on the inner wall of the clearance groove 521. The lapping plate 522 of the front door 52 and the conductive cotton 53 on the inner wall of the avoiding groove 521 are communicated with each other, the conductive cotton 53 is wrapped on the door frame 51 and forms a conductive loop together with the door frame 51 and the front door 52, and the penetration of external electromagnetic waves is reduced.

The implementation principle of the embodiment of the application is as follows: starting a switch on the control box 6, enabling the upper needle plate 43 to ascend under the action of the jacking cylinder 332, and enabling the front door module 5, the lower needle plate 41 and the carrier plate 42 to extend out of the square hole of the box body 1 under the action of the telescopic cylinder 325; the product to be tested is picked and placed manually or by a mechanical hand, is arranged in the concave placing groove 421 of the carrier plate 42, and is accurately positioned through the limiting bulge on the carrier plate 42; pressing a switch on the control box 6, under the action of the telescopic cylinder 325, the product to be tested enters the box body 1, the upper needle plate 43 descends, and the test is started; the tested data is transmitted to a computer through a communication interface to complete the analysis of the data; and after the test is finished, the front door 52 of the shielding box is opened, and the product is taken out to finish the test.

In this embodiment, the jig frame 3 and the front door module 5 are correspondingly arranged with the box body 1 as standard components, the needle support plate component 4 is arranged in a modular manner corresponding to a product to be tested, and after the product to be tested is updated and upgraded, the product test requirement can be met only by replacing the matched needle support plate component 4, so that the production efficiency is improved while the production cost is reduced.

The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.

Claims

1. A radio frequency test shielding case which is characterized in that: the device comprises a box body (1) with wave-absorbing cotton adhered to the inner wall and providing a shielding test environment, a needle carrier plate assembly (4) which is positioned in the inner cavity of the box body (1) and is used for placing a product to be tested and a probe (9), a jig frame (3) which is arranged in the box body (1) and drives the needle carrier plate assembly (4) to extend out of a square hole correspondingly formed in the box body (1) to receive materials, and a front door module (5) covering the square hole of the box body (1); the box body (1), the jig frame (3) and the front door module (5) are correspondingly arranged; the needle carrier plate assembly (4) is correspondingly and adaptively arranged according to the product to be detected, and the needle carrier plate assembly (4) is detachably connected with the jig frame (3); the needle carrier plate assembly (4) comprises a lower needle plate (41) which is arranged on the jig frame (3) and used for placing the test probes (9), a carrier plate (42) which is arranged on the lower needle plate (41) and used for placing the product to be tested, and an upper needle plate (43) which is positioned on the jig frame (3) and used for placing the probes (9) and is deviated from one side of the lower needle plate (41) of the carrier plate (42).

2. The radio frequency test shielding box of claim 1, wherein: a spring (44) is fixedly connected to the lower needle plate (41), and the other end of the spring (44) is fixedly connected to the carrier plate (42); equal-height bolts (45) for limiting the carrier plate (42) to be in a horizontal state penetrate through the lower needle plate (41) and the carrier plate (42).

3. The radio frequency test shielding box of claim 1, wherein: the jig frame (3) comprises a base plate (31) arranged in the box body (1), a telescopic part (32) which is arranged on the base plate (31) and connected with the lower needle plate (41) and used for enabling the lower needle plate (41) and the carrier plate (42) to horizontally extend out of the box body (1), and a jacking part (33) which is arranged on the base plate (31) and connected with the upper needle plate (43) and used for enabling the upper needle plate (43) to lift in the vertical direction.

4. A radio frequency test shielding cage according to claim 3, wherein: go up faller (43) and install towards one side of support plate (42) and to inserting guide shaft (48), install on support plate (42) and to inserting axle sleeve (49), go up faller (43) and in the in-process that descends, insert to inserting in guide shaft (48) to inserting axle sleeve (49).

5. The radio frequency test shielding box of claim 1, wherein: the front door module (5) comprises a door frame (51) which is arranged on the outer side of the box body (1) and is arranged around the square hole of the box body (1), a front door (52) which is provided with an avoiding groove (521) and covers the square hole of the box body (1) and the door frame (51), and conductive cotton (53) which is filled between the front door (52) and the door frame (51) to form a closed loop.

6. The radio frequency test shielding box of claim 5, wherein: an overhanging lapping plate (522) is arranged in a clearance groove (521) of the front door (52), the lapping plate (522) is positioned at two sides of a door frame (51), a part of the conductive cotton (53) is attached to the lapping plate (522) and is provided with an opposite abutting part (531) to form a clamping opening with a size smaller than that of the door frame (51), and the door frame (51) is in extrusion fit with the clamping opening of the abutting part (531) in an opening mode; the side of the door frame (51) facing the front door (52) is pressed to press the conductive cotton (53) to be attached to the other part in the clearance groove (521) of the front door (52).

7. The radio frequency test shielding box of claim 1, wherein: box (1) one end is uncovered, and open end lid has closed and has attached to one side of box (1) and inhale cotton upper cover plate (2) of ripples.

8. The radio frequency test shielding box of claim 1, wherein: a control box (6) used for controlling the movement of the jig frame (3) is installed on one side of the box body (1), and a serial port communicated with manipulator information is further arranged in the control box (6).

9. The radio frequency test shielding box of claim 1, wherein: and gratings (8) are arranged on two sides of the front door module (5).