Radio frequency test electromagnetic shielding device

Abstract

The present disclosure relates to a radio frequency test electromagnetic shielding device, comprising: a box; a jig comprising a pressing assembly, the pressing assembly comprising a support shaft and one or more pressing wheels, the support shaft being arranged in the box and at least partially located in the box, the pressing wheel being arranged on the support shaft and located in the box, in the circumferential direction of the pressing wheel, the pressing wheel comprising a first free end and a second free end arranged opposite and spaced apart; a driving mechanism connected with the pressing assembly, driving the pressing wheel to rotate, so that the first free end of the pressing wheel presses the electronic device to be tested. The radio frequency test electromagnetic shielding device of the present disclosure rotates the pressing wheel to press the electronic device with the first free end, without the need to disassemble any parts, which is convenient and fast. In addition, it can be applied to electronic devices of different sizes, has strong universality, and is beneficial to the use requirements of automated mass production.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of electronic technology, and in particular to a radio frequency test electromagnetic shielding device. BACKGROUND

[0002] Currently, the radio frequency signals of electronic devices are tested by a radio frequency test electromagnetic shielding box. For example, a mobile phone placed in the shielding box is fixed by screws and jigs, which is inconvenient and time-consuming to disassemble and assemble. For different sizes of mobile phones, a matching jig needs to be made for each test, which is costly and not conducive to the use requirements of automatic large-scale production. SUMMARY

[0003] To overcome the problems in the related art, the present disclosure provides a radio frequency test electromagnetic shielding device.

[0004] The radio frequency test electromagnetic shielding device according to the embodiments of the present disclosure comprises a box body, a jig, the jig comprising a pressing assembly, the pressing assembly comprising a support shaft and one or more pressing wheels, the support shaft being arranged in the box body and at least partially located in the box body, the pressing wheel being arranged on the support shaft and located in the box body, in the circumferential direction of the pressing wheel, the pressing wheel comprising a first free end portion and a second free end portion arranged opposite and spaced apart; a driving mechanism connected with the pressing assembly, driving the pressing wheel to rotate, so that the first free end portion of the pressing wheel presses the electronic device to be tested.

[0005] In some embodiments, the pressing assembly further comprises one or more carrier wheels, the carrier wheel being arranged on the support shaft, in the circumferential direction of the carrier wheel, the carrier wheel comprising a third free end portion and a fourth free end portion arranged opposite and spaced apart, the fourth free end portion being used to place the electronic device to be tested; wherein the driving mechanism drives the pressing wheel to rotate relative to the carrier wheel, so that the electronic device to be tested is clamped between the first free end portion of the pressing wheel and the fourth free end portion of the carrier wheel.

[0006] In some embodiments, further comprising a seat body arranged in the box body; the driving mechanism comprises an electric telescopic rod, a sliding block and a rack, the electric telescopic rod being arranged in the seat body, the sliding block being arranged on the telescopic end of the electric telescopic rod and being in sliding connection with the seat body, the rack being fixed on the sliding block; the pressing wheel has external teeth, and the external teeth are in meshing connection with the rack.

[0007] In some embodiments, the seat body is provided with a containing groove, and the driving mechanism is located in the containing groove, wherein a compression spring is arranged between the sliding block and the side wall of the containing groove.

[0008] In some embodiments, a first magnet is arranged at an end of the rack opposite to the accommodating groove, and a second magnet is arranged at a side wall of the accommodating groove opposite to the rack, the magnetic pole of the first magnet being different from that of the second magnet.

[0009] In some embodiments, the cooling device further comprises a heat dissipation fin connected to the liquid storage barrel.

[0010] In some embodiments, the first end of the support shaft is provided with a filter membrane for preventing water vapor from passing through and allowing cooling gas to pass through.

[0011] In some embodiments, the support shaft is provided with a third air outlet, and the object wheel is connected to the third air outlet through an annular cavity.

[0012] In some embodiments, the cooling device further comprises a heat dissipation fin connected to the liquid storage barrel.

[0013] In some embodiments, the cooling device further comprises a heat dissipation fin connected to the liquid storage barrel.

[0014] In some embodiments, the pressing assembly is provided with two, which are arranged in the box and are spaced apart, and the driving mechanism is provided with two, which are respectively connected to the pressing assembly.

[0015] The technical scheme provided by the embodiments of the present disclosure can have the following beneficial effects: the radio frequency test electromagnetic shielding device of the present disclosure can press the electronic device by rotating the pressing wheel, without disassembling any part, which is convenient and fast. In addition, it can be applied to electronic devices of different sizes, has strong universality, and is beneficial to the use demand of automatic large-scale production.

[0016] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings, which are incorporated herein and constitute part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, further serve to explain the principles of the present disclosure.

[0018] Figure 1 is a front view of an internal structure of a radio frequency test electromagnetic shielding device according to an exemplary embodiment.

[0019] Figure 2 is a front view of an internal structure of a radio frequency test electromagnetic shielding device according to an exemplary embodiment.

[0020] Figure 3 is a left view of a structure of a radio frequency test electromagnetic shielding device according to an exemplary embodiment.

[0021] Figure 4 is a top view of a structure of a radio frequency test electromagnetic shielding device according to an exemplary embodiment.

[0022] Figure 5 is a front view of an internal structure of a radio frequency test electromagnetic shielding device according to an exemplary embodiment. Figure 3 is an enlarged view of a partial structure of a radio frequency test electromagnetic shielding device according to an exemplary embodiment. DETAILED DESCRIPTION

[0023] The exemplary embodiments will be described in detail herein with reference to the attached drawings. The description of the exemplary embodiments is intended to apply to various alternative embodiments of the present disclosure. The following description of the exemplary embodiments is only given for the purpose of illustrating the general principles of the present disclosure. The present disclosure can be carried out in other specific ways, as those skilled in the art will appreciate from the description below. The embodiments described above with reference to the drawings are merely illustrative and should not be taken as limiting the scope of the present disclosure.

[0024] According to an embodiment of the present disclosure, a radio frequency test electromagnetic shielding device is provided, as shown in Figures 1-5 including a box 1, a jig and a driving mechanism.

[0025] The box 1 has a closed accommodating chamber for accommodating electronic devices (such as mobile phones) and radio frequency testers. The box 1 is provided with a first drop port on the top plate, and a cover 2 is hinged to the outer wall of the top plate to open or close the first drop port. The radio frequency tester can be placed on the support plate 30 inside the box 1 through the first drop port. Further, a rubber block 3 matched with the first drop port can be provided on the bottom surface of the cover 2 to seal the first drop port through the rubber block 3 when the cover 2 closes the first drop port. The side plate (such as the front side plate) of the box 1 is provided with a second drop port, and a box door is hinged to the outer wall of the side plate to open or close the second drop port. The electronic device can be placed on the jig inside the box 1 through the second drop port. Similarly, a rubber block matched with the second drop port can be provided on the inner wall of the box door to seal the second drop port through the rubber block when the box door closes the second drop port.

[0026] The jig is used to support and fix the electronic device. The jig can include a pressing assembly including a support shaft 13 and one or more pressing wheels 22.

[0027] The support shaft 13 is rotatably arranged in the box 1, and at least part of the support shaft 13 is located in the box 1. For example, as shown in Figure 3 one end of the support shaft 13 is rotatably supported on the right side plate of the box 1, and the other end of the support shaft 13 can pass through the left side plate of the box 1, that is, the support shaft 13 is supported by the left and right side plates of the box 1 and hangs in the box 1.

[0028] The pressing wheel 22 is arranged on the support shaft 13 and located in the box 1. In the circumferential direction of the pressing wheel 22, the pressing wheel 22 includes a first free end 24-1 and a second free end 24-2 arranged opposite and spaced apart. The pressing wheel 22 has a notch in the shape of an arc, and the arc-shaped pressing wheel 22 can be fixed to the support shaft 13 by a plurality of connecting ribs 23, for example, the connecting ribs 23 can be provided with three, which are uniformly distributed along the circumferential direction of the support shaft 13. The pressing wheel 22 can be provided with a plurality of, arranged spaced apart along the axial direction of the support shaft 13.

[0029] The driving mechanism is connected with the jig, and drives the pressing wheel 22 to rotate, so that the first free end 24-1 of the pressing wheel 22 presses the electronic device to be tested.

[0030] In use, initially, the first free end 24-1 of the compression wheel 22 is higher than the second free end 24-2. The electronic device is placed in the box 1 through the second drop opening on the front side plate of the box 1 at a position lower than the first free end 24-1 of the compression wheel 22, for example, the electronic device can be placed on the seat body 4 in the box 1, and the upper surface of the seat body 4 abuts against the first free end 24-1 of the compression wheel 22. The bottom surface (lower surface) of the electronic device abuts against the upper surface of the seat body 4 and is supported by the seat body 4. Then, the driving mechanism drives the compression wheel 22 to rotate, for example, clockwise, so that the first free end 24-1 moves towards the electronic device until abutting against the top surface (upper surface) of the electronic device, and the electronic device is compressed for radio frequency testing of the electronic device. After the testing is completed, the driving mechanism drives the compression wheel 22 to rotate reversely, for example, counterclockwise, so that the first free end 24-1 moves away from the electronic device, and the electronic device is released.

[0031] A rubber pad can be arranged on the first free end 24-1 of the compression wheel 22, which can buffer the electronic device when the first free end 24-1 presses the electronic device, so as to prevent scratching the electronic device.

[0032] In the embodiments of the present disclosure, the first free end 24-1 of the compression wheel 22 is used to compress the electronic device by rotating the compression wheel 22, without disassembling any component, which is convenient and fast. In addition, the compression wheel 22 can be applied to electronic devices of different sizes, has strong universality, and is beneficial to the use requirement of automatic large-scale production.

[0033] In some embodiments, as shown in Figure 2 The compression assembly further includes one or more than one carrier wheel 26 arranged on the support shaft 13. The carrier wheel 26 includes a third free end 28-1 and a fourth free end 28-2 arranged oppositely and spaced apart in the circumferential direction of the carrier wheel 26, and the fourth free end 28-2 is used to place the electronic device to be tested. The driving mechanism drives the compression wheel 22 to rotate relative to the carrier wheel 26, so that the electronic device to be tested is clamped between the first free end 24-1 of the compression wheel 22 and the fourth free end 28-2 of the carrier wheel 26.

[0034] The carrier wheel 26 has a notch and is in an arc shape. The arc-shaped carrier wheel 26 is sleeved on the support shaft 13, and the support shaft 13 is rotatable relative to the carrier wheel 26, that is, the carrier wheel 26 does not rotate with the support shaft 13. For example, the carrier wheel 26 can be fixedly connected with the seat body 4. The third free end 28-1 of the carrier wheel 26 is higher than the fourth free end 28-2, and the surface of the fourth free end 28-2 can be a horizontal surface. A rubber pad can be arranged on the fourth free end 28-2 to prevent scratching the electronic device when the electronic device is placed on the fourth free end 28-2. The carrier wheel 26 can be provided with a plurality of carrier wheels arranged adjacent to the compression wheel 22.

[0035] In use, the electronic device can be placed on the fourth free end 28-2 of the plurality of carrier wheels 26 and supported by the fourth free end 28-2. Then, the driving mechanism drives the compression wheel 22 to rotate, for example, clockwise, so that the first free end 24-1 of the compression wheel 22 moves towards the electronic device until the top surface (upper surface) of the electronic device is abutted, while the bottom surface (lower surface) of the electronic device is abutted against the fourth free end 28-2 of the carrier wheel 26, and the electronic device is compressed by the fourth free end 28-2 and the first free end 24-1 for radio frequency testing of the electronic device. After the testing is completed, the driving mechanism drives the compression wheel 22 to rotate reversely, for example, counterclockwise, so that the first free end 24-1 moves away from the electronic device to release the electronic device.

[0036] In some embodiments, as shown in FIG. 1, the driving mechanism can include an electric telescopic rod 9, a sliding block 8 and a rack 11. The electric telescopic rod 9 is arranged in the seat 4, the sliding block 8 is arranged at the telescopic end of the electric telescopic rod 9 and is in sliding connection with the seat 4, and the rack 11 is fixed on the sliding block 8. The compression wheel 22 has external teeth which are in engagement with the rack 11. The electric telescopic rod 9 drives the sliding block 8 to slide transversely relative to the seat 4, drives the rack 11 to move transversely, and drives the compression wheel 22 in engagement with the rack 11 to rotate. Figure 1 The seat 4 has a receiving groove, and the top wall of the receiving groove has an opening for accommodating part of the compression wheel 22. A sliding groove, for example, a dovetail groove, is arranged on the bottom wall of the receiving groove, and the sliding block 8 is embedded in the sliding groove. The fixed end of the electric telescopic rod is fixed on the left side wall of the receiving groove, and the telescopic end is connected with the sliding block 8. A compression spring 10 can be arranged between the sliding block 8 and the right side wall of the receiving groove to improve the stability of the sliding of the sliding block 8. The rack 11 is fixed on the top surface of the sliding block 8 and slides left and right with the sliding block 8.

[0037] In an example, a first magnet 12 is arranged at the end of the rack 11 opposite to the receiving groove, and a second magnet 7 is arranged on the side wall of the receiving groove opposite to the rack 11, and the magnetic poles of the first magnet and the second magnet are different. When the electric telescopic rod 9 drives the sliding block 8 and the rack 11 to move and drives the compression wheel 22 to rotate, the first free end 24-1 of the compression wheel 22 compresses the electronic device, and the first magnet 12 and the second magnet 7 are attracted to each other to stably compress the electronic device by the compression wheel 22.

[0038] The compression assembly described above can be arranged in two, and arranged in the box 1 and spaced apart. The driving mechanism is arranged in two and connected with the compression assemblies to drive the compression wheels of the compression assemblies to rotate, respectively.

[0039]

[0040] ​For example, the two clamping components are located on the left and right sides of the housing 1, respectively. The top wall of the receiving groove of the base 4 can be provided with two openings to accommodate the clamping wheels of the left and right clamping components, respectively. Corresponding to the two clamping components, two drive mechanisms are located on the left and right sides of the receiving groove, respectively. A limiting component 6 can be provided between the rack 11 of the left and right drive mechanisms. The limiting component 6 has a cross-shaped structure, with its lower end fixed to the base 4 and its upper end fixedly connected to the fixing plate 5. The left end is used to limit the rack 11 of the left drive mechanism, and the right end is used to limit the rack 11 of the right drive mechanism. The aforementioned carrying wheel 26 can be fixedly connected to the fixing plate 5.

[0041] In some embodiments, such as Figure 3 As shown, it also includes a cooling device for supplying cool air to the interior of the housing 1. The cooling device includes a liquid storage tank 14 and a blower 18.

[0042] A coolant reservoir 14 is installed on the outer wall of the housing 1, and contains coolant. A coolant inlet 16 is located on the top of the reservoir 14, through which coolant is added to the reservoir 14. A blower 18 is installed on the reservoir 14, with its nozzle extending into the coolant. A long tube 19 can be installed at the nozzle of the blower 18, extending into the coolant.

[0043] The support shaft 13 is a hollow structure with a cavity extending along its length. The first end of the support shaft 13 passes through the housing 1 and extends into the liquid storage tank 14, communicating with it. The pressure roller 22 is a hollow ring and communicates with the support shaft 13, and can be connected to the support shaft 13 via a hollow connecting rib 23. The second free end 24-2 of the pressure roller 22 is provided with a first air outlet for blowing air onto the top surface of the electronic device to be tested. The carrier roller 26 is a hollow ring and communicates with the support shaft 13. The third free end 28-1 of the carrier roller 26 is provided with a second air outlet for blowing air onto the bottom surface of the electronic device to be tested.

[0044] The blower 18 blows air into the coolant through the air outlet. The air cooled by the coolant flows through the cavity of the support shaft 13 into the hollow pressure roller 22 and the hollow carrier roller 26. It blows air onto the top surface (upper surface) of the electronic device through the first air outlet of the second free end 24-2 of the pressure roller 22, and blows air onto the bottom surface (lower surface) of the electronic device through the second air outlet of the third free end 28-1 of the carrier roller 26.

[0045] In the process of testing the radio frequency chip of the electronic device, a large amount of heat is generated, which may damage the radio frequency chip, affect the test result, and also affect the use performance of the electronic device. In the embodiment of the present disclosure, the temperature of the radio frequency chip inside the electronic device is rapidly reduced by actively blowing air to the electronic device for cooling, and the electronic device can be continuously cooled to improve the test precision.

[0046] The air blower 18 further comprises a gas guide port in communication with the air outlet, which is in communication with the box body 1. The hot air in the box body 1 can be guided into the liquid storage barrel 14 through the gas guide port for cooling, so that an air circulation loop is formed in the box body 1 and the liquid storage barrel 14, which further continuously and effectively cools the electronic device to improve the test precision.

[0047] In some embodiments, the cooling device further comprises a heat sink 15 connected to the liquid storage barrel 14. The heat sink 15 cools the cooling liquid in the liquid storage barrel 14 and continuously cools the air in the liquid storage barrel 14.

[0048] A filter membrane 20 can be arranged at the first end of the support shaft 13, i.e., the end extending into the liquid storage barrel 14. The filter membrane is used to prevent water vapor from passing through and allows cooling gas to pass through, so as to prevent water vapor from entering the electronic device and affecting the use performance. The filter membrane can be a DuPont membrane.

[0049] In some embodiments, as shown in Figure 3 and Figure 5 The support shaft 13 is provided with one or more third air outlets 13-1, which are located in the box body 1 and in communication with the carrier wheel 26. The carrier wheel 26 is in communication with the third air outlet 13-1 through an annular cavity 25. The annular cavity 25 is sleeved on the support shaft 13 and in communication with the third air outlet 13-1. The annular cavity is in communication with the carrier wheel 26 through a plurality of hollow connecting rods 27. The annular cavity 25 is sleeved on the support shaft 13 at a position corresponding to the third air outlet 13-1. A sealing ring 21 is arranged between the annular cavity 25 and the support shaft 13 to prevent the cold air flowing out of the third air outlet 13-1 from flowing out of the gap between the annular cavity 25 and the support shaft 13. The support shaft 13 rotates relative to the carrier wheel 26 through the sealing ring 21. During rotation, the sealing ring 21 is always in sealing contact with the annular cavity 25 and the support shaft 13.

[0050] In some embodiments, the radio frequency test electromagnetic shielding device further comprises a controller 17 arranged in the liquid storage barrel 14 or the box body 1 and electrically connected with the air blower 18 and the electric telescopic rod 9, for controlling the start or stop of the air blower 18 and the electric telescopic rod 9, respectively.

[0051] It can be understood that "multiple" in the present disclosure refers to two or more, and other quantifiers are similar. The association relationship of "and / or" describing the associated objects means that there can be three relationships, for example, A and / or B can represent three cases of A existing alone, A and B existing together, and B existing alone. The character " / " generally represents that the associated objects before and after it are in an "or" relationship. The singular forms "a", "said" and "the" are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0052] It can be further understood that the terms "first", "second", and the like are used to describe various information, but these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not indicate a particular order or importance. In fact, the expressions of "first", "second", and the like can be completely interchangeable. For example, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information without departing from the scope of the present disclosure.

[0053] It can be further understood that the terms "center", "longitudinal", "transverse", "front", "back", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation.

[0054] It can be further understood that, unless otherwise specified, "connection" includes direct connection between the two without other components, and also includes indirect connection between the two with other elements.

[0055] It can be further understood that, although the operations in the embodiments of the present disclosure are described in a specific order in the drawings, it should not be understood as requiring the operations to be performed in the specific order shown or in a serial order, or requiring all the operations to be performed to obtain the desired results. In a particular environment, multi-tasking and parallel processing can be advantageous.

[0056] Other embodiments of the present disclosure will be apparent to those skilled in the art with the consideration of the specification and practice of the invention disclosed herein. The present disclosure is intended to cover any variations, uses, or adaptive changes of the present disclosure that follow the general principles of the present disclosure and include common knowledge or conventional technical means in the art that are not disclosed by the present disclosure. The specification and examples are only considered as exemplary, and the true scope and spirit of the present disclosure are indicated by the scope of the claims.

[0057] It should be understood that the present disclosure is not limited to the precise construction that has been described above and shown in the accompanying drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the present disclosure. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An electromagnetic shielding device for radio frequency testing, characterized in that, include: Box; A fixture, the fixture including a clamping assembly, the clamping assembly including a support shaft and one or more clamping wheels, the support shaft being disposed in the housing and at least partially located within the housing, the clamping wheels being disposed in the support shaft and located within the housing, and in the circumferential direction of the clamping wheels, the clamping wheels including a first free end and a second free end disposed opposite to and spaced apart from each other; The base is disposed inside the box; The driving mechanism includes an electric telescopic rod, a slider, and a rack. The electric telescopic rod is disposed on the base body, the slider is disposed on the telescopic end of the electric telescopic rod and is slidably connected to the base body, the rack is fixed on the slider, and the clamping wheel has external teeth that mesh with the rack and drive the clamping wheel to rotate so that the first free end of the clamping wheel presses against the electronic device to be tested.

2. The radio frequency testing electromagnetic shielding device according to claim 1, characterized in that, The clamping assembly also includes one or more load-bearing wheels, which are disposed on the support shaft. In the circumferential direction of the load-bearing wheels, the load-bearing wheels include a third free end and a fourth free end that are opposite to each other and spaced apart. The fourth free end is used to place the electronic device to be tested. The drive mechanism drives the clamping wheel to rotate relative to the carrying wheel, so that the electronic device to be tested is clamped between the first free end of the clamping wheel and the fourth free end of the carrying wheel.

3. The radio frequency testing electromagnetic shielding device according to claim 1, characterized in that, The base is provided with a receiving groove, and the driving mechanism is located in the receiving groove. A compression spring is provided between the slider and the side wall of the receiving groove.

4. The radio frequency testing electromagnetic shielding device according to claim 3, characterized in that, A first magnet is provided at one end of the rack opposite to the receiving groove. A second magnet is provided on the side wall of the receiving groove opposite to the rack, and the magnetic poles of the first magnet and the second magnet are different.

5. The radio frequency testing electromagnetic shielding device according to claim 2, characterized in that, Also includes: Cooling device, the cooling device comprising: A liquid storage tank is disposed on the outer wall of the box, and the liquid storage tank contains coolant. A blower is installed in the liquid storage tank, and the blower's nozzle extends into the coolant. The support shaft has a hollow structure, with its first end passing through the box and extending into the liquid storage tank, where it is connected to the liquid storage tank. The clamping wheel is hollow and ring-shaped and connected to the support shaft. The second free end of the clamping wheel is provided with a first air outlet for blowing air onto the bottom surface of the electronic device to be tested. The load-carrying wheel is a hollow ring connected to the support shaft. The third free end of the load-carrying wheel is provided with a second air outlet for blowing air onto the top surface of the electronic device to be tested.

6. The radio frequency testing electromagnetic shielding device according to claim 5, characterized in that, The first end of the support shaft is provided with a filter membrane, which is used to prevent water vapor from passing through and to allow cooling gas to pass through.

7. The radio frequency testing electromagnetic shielding device according to claim 5, characterized in that, A third air outlet is provided on the support shaft; The load-carrying wheel is connected to the third air outlet through an annular cavity, wherein the annular cavity is sleeved on the support shaft and is connected to the third air outlet.

8. The radio frequency testing electromagnetic shielding device according to claim 5, characterized in that, The cooling device also includes: Heat sink connected to the liquid storage tank.

9. The radio frequency testing electromagnetic shielding device according to claim 5, characterized in that, Also includes: The controller is located in the liquid storage tank or the box and is electrically connected to the blower.

10. The radio frequency testing electromagnetic shielding device according to claim 1, characterized in that, Two clamping components are provided, which are disposed inside the box and spaced apart; There are two drive mechanisms, each connected to the clamping assembly.

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