Airtightness detection jig and method for antenna

Abstract

The invention provides an air tightness detection jig and method for an antenna. The air tightness detection jig for the antenna comprises a fixed seat, a movable seat and a sealing assembly. The movable seat can move in the direction close to or away from the fixed seat, a sealing cavity is formed when the movable seat and the fixed seat are subjected to mold closing, and the sealing cavity is used for containing the antenna box and the metal interface together. The sealing assembly comprises a transmission part and at least one sealing fin, the transmission part is slidably connected to the fixing base and slides in the direction close to or away from the sealing cavity, and the sealing fins are connected to the peripheral wall of the transmission part in a surrounding mode. When the transmission part slides towards the direction close to the sealing cavity to drive the sealing fin to extend into the metal connector, the transmission part and the metal connector are arranged in a spaced mode, and the sealing fin is attached to the inner wall of the metal connector after the metal connector is filled with gas. The air tightness detection jig for the antenna can further effectively reduce local deformation of the antenna on the basis of ensuring effective sealing of the inflation inlet of the antenna.

Description

Technical Field

[0001] This invention relates to the field of antenna airtightness testing technology, and in particular to an antenna airtightness testing fixture and method. Background Technology

[0002] Antennas offer advantages such as wide coverage, strong anti-interference capabilities, and low cost. Their applications have expanded from traditional communications to cutting-edge fields like aerospace, military, and the Industrial Internet of Things. Antenna airtightness testing is a core component in ensuring product reliability and safety. For example, utility model patent application CN202321171663.0 provides an airtightness testing device that accurately positions the antenna and inflates it to perform airtightness testing. However, for applications like... Figure 1 When testing the airtightness of the antenna shown, the air inlet is a thin metal cylinder. When the driving component drives the sealing component to seal the metal cylinder, the impact of the sealing component on the metal cylinder can easily cause deformation of the metal cylinder, affecting the use of the antenna. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an antenna airtightness testing fixture and method that, while ensuring the effective sealing of the antenna's air inlet, can further effectively reduce the local deformation of the antenna.

[0004] The objective of this invention is achieved through the following technical solution:

[0005] A fixture for testing the airtightness of an antenna is provided for testing the airtightness of the antenna. The antenna includes an antenna housing and a metal interface. At least a portion of the metal interface protrudes from the side wall of the antenna housing. The periphery of the metal interface is tightly connected to the antenna housing, and the metal interface communicates with the antenna housing. The fixture for testing the airtightness of the antenna includes:

[0006] Fixed base;

[0007] A movable base, which can move towards or away from the fixed base, and forms a sealed cavity when the movable base and the fixed base are molded together. The sealed cavity is used to house the antenna box and the metal interface together.

[0008] A sealing assembly, the sealing assembly including a transmission part and at least one sealing wing, the transmission part being slidably connected to the fixed base, the transmission part sliding toward or away from the sealing cavity, and the sealing wing being connected to the outer peripheral wall of the transmission part around the transmission part;

[0009] When the transmission part slides toward the sealing cavity to drive the sealing wing to extend into the metal interface, the transmission part is spaced apart from the metal interface, and the sealing wing adheres to the inner wall of the metal interface after being filled with gas.

[0010] In one embodiment, the sealing assembly further includes a sealing support portion connected to the side of the transmission portion near the sealing cavity, and the sealing flap is connected to the outer periphery of the sealing support portion;

[0011] The transmission part slides toward the direction of the sealing cavity, thereby driving the sealing support part and the sealing wing to extend into the metal interface. The sealing support part is spaced apart from the metal structure.

[0012] In one embodiment, the sealing support and the sealing wing are integrally formed.

[0013] In one embodiment, the sealing support is an elastic silicone support.

[0014] In one embodiment, the sealing support is at least partially embedded in the transmission part.

[0015] In one embodiment, the sealing support is integrally formed on the transmission part.

[0016] In one embodiment, the sealing wing is an elastic silicone wing.

[0017] In one embodiment, when the sealing wing is coaxially arranged with the metal interface, the distance between the sealing wing and the metal interface is less than 1 / 10 of the minimum width of the sealing wing, and the minimum width of the sealing wing is 1 / 3 to 1 / 10 of the distance of the metal structure.

[0018] In one embodiment, the number of sealing fins is two or more, and the two or more sealing fins are linearly arranged along the sliding direction of the transmission part, with each sealing fin surrounding and connected to the outer peripheral wall of the transmission part.

[0019] In one embodiment, the sealing wing includes an annular connecting portion and at least two annular wing portions. The annular connecting portion is sleeved on the peripheral wall of the transmission portion. The two annular wing portions are arranged along the sliding direction of the transmission portion. Each annular wing portion is connected to the annular connecting portion, and one end of each annular wing portion protrudes from the side of the annular connecting portion away from the transmission portion and extends toward the sealing cavity.

[0020] When the transmission part slides towards the sealing cavity and drives the annular connecting part and the two annular wing parts to extend into the metal interface, the transmission part and the annular connecting part are spaced apart from the metal interface, and each annular wing part is attached to the inner wall of the metal interface after being filled with gas.

[0021] In one embodiment, each of the annular wing portions includes at least two petal-shaped winglets, the two petal-shaped winglets of each of the annular wing portions are arranged circumferentially along the transmission portion to form two receiving areas, and each of the petal-shaped winglets of each of the annular wing portions is connected to the same ring line on the peripheral wall of the annular connecting portion, the ring line being arranged around the circumference of the annular connecting portion;

[0022] One end of each of the petal-shaped winglets in each of the annular winglet portions protrudes from the side of the annular connecting portion away from the transmission portion and extends toward the sealing cavity;

[0023] Each of the two petal-shaped winglets of the annular winglet portion covers the two bordering areas of the adjacent annular winglet portion 322 in a one-to-one correspondence;

[0024] When the transmission part slides toward the sealing cavity and drives the annular connecting part and each of the petal-shaped winglets of each annular winglet part to extend into the metal interface, each of the petal-shaped winglets of two adjacent annular winglet parts is stacked and attached to each other, and each of the petal-shaped winglets of each annular winglet part is spaced apart from the metal interface and is attached to the inner wall of the metal interface after being filled with gas.

[0025] In one embodiment, the two petal-shaped flaps of each of the annular flap portions at least partially overlap at each corresponding junction area.

[0026] In one embodiment, the two petal-shaped flaps of each of the annular flap portions abut at least partially against the peripheral walls at each corresponding border area.

[0027] In one embodiment, the two petal-shaped flaps of each annular flap portion are spaced apart at each corresponding border area, and the maximum spacing distance is less than 1 / 3 of each annular flap portion.

[0028] In one embodiment, the annular connecting portion of each sealing wing and the two annular wing portions of each corresponding annular wing portion are integrally formed.

[0029] In one embodiment, the airtightness testing fixture for the antenna further includes a driving member connected to the fixed base, and the power output end of the driving member is connected to the transmission part to drive the transmission member to slide towards or away from the sealing cavity.

[0030] A method for detecting the airtightness of an antenna, performed using the airtightness testing fixture described in any of the above embodiments, includes the following steps:

[0031] The antenna is fixed within a hermetically sealed cavity.

[0032] The transmission unit is driven once to slide towards the sealing cavity until the sealing wing extends into the metal interface. The distance the sealing wing extends into the metal interface is a preset distance.

[0033] The transmission unit after the first driving process is subjected to a second driving process so that the transmission unit slides away from the sealing cavity and drives the sealing wing to move away from the sealing cavity. The distance that the sealing wing moves away from the sealing cavity is less than the preset distance.

[0034] The antenna is subjected to airtightness testing.

[0035] Compared with the prior art, the present invention has at least the following advantages:

[0036] The airtightness testing fixture for the antenna of the present invention allows the fixed base and the movable base to be molded together to form a sealed cavity, providing a relatively stable gas environment for the airtightness testing of the antenna. A transmission unit moves towards or away from the sealed cavity, and a sealing wing is connected to the outer peripheral wall of the transmission unit. This allows the transmission unit to drive the sealing wing to move towards or away from the sealed cavity. When the transmission unit slides towards the sealed cavity and drives the sealing wing to extend into the metal interface, the transmission unit and the metal interface are spaced apart. After the sealing wing is filled with gas in the metal interface, it adheres to the inner wall of the metal interface. In the process of preparing for airtightness testing of the antenna, at least part of the transmission part and the sealing wing will extend into the metal interface. However, the transmission part and the metal interface are positioned to avoid impact on the metal interface, which reduces the local deformation of the antenna. Furthermore, after the sealing wing is filled with gas, it adheres to the inner wall of the metal interface. This ensures that the sealing wing adheres to the inner wall of the metal interface and works with the transmission part to seal the metal interface. This is beneficial for ensuring the effective sealing of the antenna's air inlet when gas is filled into the metal interface through the transmission part. Attached Figure Description

[0037] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the structure of an antenna airtightness testing fixture according to an embodiment of the present invention;

[0039] Figure 2 for Figure 1 The diagram shows the usage status of the airtightness testing fixture for the antenna shown.

[0040] Figure 3 for Figure 1 A partial view of the airtightness testing fixture for the antenna shown.

[0041] Figure 4 for Figure 1 A cross-sectional view of the airtightness testing fixture for the antenna shown.

[0042] Figure 5 for Figure 4 A magnified view of point A on the airtightness testing fixture for the antenna shown.

[0043] Figure 6 for Figure 1 Another usage diagram of the airtightness testing fixture for the antenna shown;

[0044] Figure 7 for Figure 1 A partial view of the airtightness testing fixture for the antenna shown.

[0045] Figure 8 for Figure 7 A cross-sectional view of the airtightness testing fixture for the antenna shown.

[0046] Figure 9 for Figure 8 A partial view of the airtightness testing fixture for the antenna shown.

[0047] Figure 10 for Figure 7 A partial view of the airtightness testing fixture for the antenna shown. Detailed Implementation

[0048] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0049] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0051] This application provides an antenna airtightness testing fixture for testing the airtightness of an antenna. The antenna includes an antenna box and a metal interface. At least a portion of the metal interface protrudes from the side wall of the antenna box, and the periphery of the metal interface is tightly connected to the antenna box, and the metal interface communicates with the antenna box. The aforementioned antenna airtightness testing fixture includes a fixed base, a movable base, and a sealing assembly. The movable base can move towards or away from the fixed base, and when the movable base and the fixed base are molded together, they form a sealed cavity for accommodating both the antenna box and the metal interface. The sealing assembly includes a driving part and at least one sealing wing. The driving part is slidably connected to the fixed base and slides towards or away from the sealed cavity. The sealing wing is surrounded and connected to the outer peripheral wall of the driving part. When the driving part slides towards the sealed cavity to drive the sealing wing into the metal interface, the driving part and the metal interface are spaced apart, and the sealing wing adheres to the inner wall of the metal interface after being filled with gas.

[0052] The aforementioned antenna airtightness testing fixture allows the fixed base and the movable base to be molded together to form a sealed cavity, providing a relatively stable gas environment for antenna airtightness testing. This, combined with the movement of the transmission unit towards or away from the sealed cavity, and the sealing wing plate surrounding and connected to the outer peripheral wall of the transmission unit, enables the transmission unit to drive the sealing wing plate towards or away from the sealed cavity. When the transmission unit slides towards the sealed cavity and drives the sealing wing plate into the metal interface, the transmission unit and the metal interface are spaced apart. After the sealing wing plate is filled with gas in the metal interface, it adheres to the inner wall of the metal interface. In the process of preparing for air filling during antenna airtightness testing, at least part of the transmission part and the sealing wing will extend into the metal interface. However, the transmission part and the metal interface are positioned to avoid impact on the metal interface, which effectively reduces local deformation of the antenna. Furthermore, after the sealing wing is filled with gas, it adheres to the inner wall of the metal interface. This ensures that the sealing wing adheres to the inner wall of the metal interface and works with the transmission part to seal the metal interface. This is beneficial for ensuring the effective sealing of the antenna's air filling port when gas is filled into the metal interface through the transmission part.

[0053] To better understand the airtightness testing fixture for the antenna of this application, the following further explanation is provided:

[0054] Please refer to the following: Figures 1 to 3 One embodiment of the antenna airtightness testing fixture 10 includes a fixed base 100, a movable base 200, and a sealing assembly 300. The movable base 200 is movable toward or away from the fixed base 100, and when the movable base 200 and the fixed base 100 are molded together, they form a sealing cavity 201, which is used to house the antenna box 20 and the metal interface 30. The sealing assembly 300 includes a transmission part 310 and at least one sealing wing 320. The transmission part 310 is slidably connected to the fixed base 100 and slides toward or away from the sealing cavity 201. The sealing wing 320 is connected to the outer peripheral wall of the transmission part 310. When the transmission part 310 slides toward the sealing cavity 201 to drive the sealing wing 320 into the metal interface 30, the transmission part 310 and the metal interface 30 are spaced apart. After the metal interface 30 is filled with gas, the sealing wing 320 adheres to the inner wall of the metal interface 30.

[0055] The aforementioned antenna airtightness testing fixture 10 allows the fixed base 100 and the movable base 200 to be molded together to form a sealed cavity 201, providing a relatively stable gas environment for antenna airtightness testing. This is achieved by the transmission unit 310 moving towards or away from the sealed cavity 201, with the sealing wing 320 surrounding and connected to the outer peripheral wall of the transmission unit 310. This allows the transmission unit 310 to drive the sealing wing 320 towards or away from the sealed cavity 201. When the transmission unit 310 slides towards the sealed cavity 201 until the sealing wing 320 extends into the metal interface 30, the transmission unit 310 and the metal interface 30 are spaced apart. After the sealing wing 320 is filled with gas, it adheres to the metal interface 30. On the inner wall of the interface 30, during the inflation preparation for antenna airtightness testing, at least part of the transmission part 310 and the sealing wing 320 will extend into the metal interface 30. However, the transmission part 310 and the metal interface 30 are positioned to avoid impact on the metal interface 30, which reduces local deformation of the antenna. Furthermore, the sealing wing 320 adheres to the inner wall of the metal interface 30 after gas is filled into the metal interface 30. This ensures that the sealing wing 320 adheres to the inner wall of the metal interface 30 and works with the transmission part 310 to seal the metal interface 30. This helps to ensure effective sealing of the antenna's inflation port when gas is filled into the metal interface 30 through the transmission part 310.

[0056] Please refer to the following: Figures 4 to 6 In one embodiment, the sealing assembly 300 further includes a sealing support portion 330, which is connected to the side of the transmission portion 310 near the sealing cavity 201, and a sealing wing 320 is connected to the outer periphery of the sealing support portion 330. Further, the transmission portion 310 slides towards the sealing cavity 201, thereby driving the sealing support portion 330 and the sealing wing 320 into the metal interface 30. The sealing support portion 330 is spaced apart from the metal structure, which helps to improve the sealing effect and thus improves the accuracy of the antenna's airtightness detection.

[0057] Please refer to the following: Figures 2 to 4 In one embodiment, the mounting base 100 is provided with an inflation channel 101. Further, the transmission part 310 is provided with an inflation hole 301, which communicates with both the inflation channel 101 and the sealing cavity 201. Further, the sealing support part 330 is provided with an auxiliary inflation hole 301, which communicates with both the inflation hole 301 and the sealing cavity 201, to enable inflation from the metal interface 30 to the antenna box 20 via the mounting base 100, the transmission part 310, and the sealing support part 330.

[0058] Please refer to the following: Figures 1 to 3In one embodiment, the fixed seat 100 is provided with at least one guide post 500, and the movable seat 200 moves toward the fixed seat 100 until the guide post 500 extends at least partially into the movable seat 200, so as to achieve precise mold closing between the fixed seat 100 and the movable seat 200 to form a sealed cavity 201.

[0059] Please refer to the following: Figures 1 to 3 In one embodiment, a sealing ring 600 is provided on the side of the fixed base 100 near the movable base 200, and the sealing ring 600 surrounds the periphery of the sealing cavity 201. Further, when the movable base 200 moves towards the fixed base 100 to the mold closing position, the sealing ring 600 is sandwiched between the fixed base 100 and the movable base 200, so that the sealing ring 600 seals the sealing cavity 201 when the movable base 200 and the fixed base 100 close the mold. Further, the sealing ring 600 is a silicone rubber ring, which helps to improve the stability of the gas environment in the antenna airtightness testing environment, thereby improving the accuracy of the antenna airtightness testing.

[0060] In one embodiment, the sealing support and the sealing flap are integrally formed. Further, the sealing support is at least partially embedded in the transmission part. Further, the sealing support is integrally formed on the transmission part.

[0061] In one embodiment, the sealing support is an elastic silicone support. Further, the sealing wing is an elastic silicone wing.

[0062] Please refer to the following: Figures 5 to 8 In one embodiment, the number of sealing fins 320 is two or more, and the two or more sealing fins 320 are linearly arranged along the sliding direction of the transmission part 310, with each sealing fin 320 surrounding and connected to the outer peripheral wall of the transmission part 310.

[0063] Please refer to the following: Figures 7 to 9In one embodiment, the sealing wing 320 includes an annular connecting portion 321 and at least two annular wing portions 322. The annular connecting portion 321 is sleeved on the peripheral wall of the transmission portion 310. The two annular wing portions 322 are arranged along the sliding direction of the transmission portion 310. Each annular wing portion 322 is connected to the annular connecting portion 321, and one end of each annular wing portion 322 protrudes from the side of the annular connecting portion 321 away from the transmission portion 310 and extends toward the sealing cavity 201. Further, when the transmission portion 310 slides toward the sealing cavity 201 and drives the annular connecting portion 321 and the two annular wing portions 322 into the metal interface 30, the transmission portion 310 and the annular connecting portion 321 are spaced apart from the metal interface 30. Each annular wing portion 322 adheres to the inner wall of the metal interface 30 after gas is filled into the metal interface 30. Furthermore, one end of the annular connecting portion 321 is connected to the peripheral wall of the transmission portion 310, one end of each annular wing portion 322 is connected to the end of the annular connecting portion 321 away from the transmission portion 310, and the other end of each annular wing portion 322 protrudes from the annular connecting portion 321 and extends toward the sealing cavity 201.

[0064] Please refer to the following: Figures 7 to 9It is understandable that since the airtightness test of the antenna involves filling the antenna with gas, the internal pressure of the antenna is relatively high. This causes the side of each annular wing portion 322 facing the sealing cavity 201 to be recessed inward, so that each annular wing portion 322 adheres more tightly to the inner wall of the metal interface 30 under the condition of higher internal air pressure. This better ensures the sealing stability of the metal interface 30 during the process of filling the metal interface 30 with gas through the transmission part 310. Furthermore, each petal-shaped wing of each annular wing portion 322 is recessed inward on the side facing the sealing cavity 201, so that each petal-shaped wing of each annular wing portion 322 adheres more tightly to the inner wall of the metal interface 30 under the condition of higher internal air pressure. Furthermore, since each annular wing portion 322 is annular, in order to ensure that each annular wing portion 322 can be well adhered to the inner wall of the metal interface 30 under gas pressure, the outer edge of each annular wing portion 322 needs to be in contact with the inner wall of the metal interface 30 before gas is injected into the metal interface 30. However, this will cause some annular wing portions 322 to flip under the friction of the metal interface 30, thus causing some annular wing portions 322 to move away from the sealing cavity 2. If one side of 01 is concave inward, the annular wing portion 322 may detach from the inner wall of the metal interface 30 under high internal air pressure, affecting the sealing stability of the metal interface 30. Alternatively, each annular wing portion 322 may need to have excellent tensile and ductile properties, but this would greatly reduce the structural strength of the annular wing portion 322. Under high internal air pressure, this would also cause the annular wing portion 322 to detach from the inner wall of the metal interface 30, affecting the sealing stability of the metal interface 30.

[0065] Please refer to the following: Figures 8 to 10To improve the sealing stability of the metal interface 30, in one embodiment, each annular wing portion 322 includes at least two petal-shaped wings 3221. The two petal-shaped wings 3221 of each annular wing portion 322 are arranged circumferentially along the transmission portion 310 to form two contact areas 32223222. Each petal-shaped wing 3221 of each annular wing portion 322 is connected to the same ring line on the peripheral wall of the annular connecting portion 321, and the ring line is arranged around the circumference of the annular connecting portion 321. Further, one end of each petal-shaped wing 3221 of each annular wing portion 322 protrudes from the side of the annular connecting portion 321 away from the transmission portion 310 and extends toward the sealing cavity 201. Further, the two petal-shaped wings 3221 of each annular wing portion 322 correspond one-to-one to cover the two contact areas 3222 of the adjacent annular wing. Furthermore, when the transmission part 310 slides towards the sealing cavity 201, driving the annular connecting part 321 and each petal-shaped wing 3221 of each annular wing part 322 to extend into the metal interface 30, each petal-shaped wing 3221 of two adjacent annular wing parts 322 are stacked and fitted together, and each petal-shaped wing 3221 of each annular wing part 322 is spaced apart from the metal interface 30 and adheres to the inner wall of the metal interface 30 after gas is filled into the metal interface 30. Furthermore, each annular wing part 322 includes multiple petal-shaped wing 3221. Furthermore, each annular wing part 322 includes twelve petal-shaped wing 3221. Furthermore, after gas is filled into the metal interface 30, all the petal-shaped wing 3221 of each annular wing part 322 open towards the sealing cavity 201 and adhere to the inner wall of the metal interface 30. Furthermore, after gas is filled into the metal interface 30, each petal-shaped wing 3221 of two adjacent annular wing portions 322 is stacked and attached to each other, and the multiple petal-shaped wing 3221 of each annular wing portion 322 corresponds to and covers the multiple border areas 3222 of the other adjacent annular wing portion 322. Furthermore, the end of each annular wing portion 322 near the sealing cavity 201 protrudes from the end of the annular connecting portion 321 and protrudes from the end of the adjacent annular wing portion 322 away from the sealing cavity 201. That is, for the ends of at least two annular wing portions 322 protruding from the annular connecting portion 321, the end of the annular wing portion 322 near the sealing cavity 201 protrudes from the end of the adjacent annular wing portion 322 away from the sealing cavity 201. In this way, when each annular wing portion 322 near the sealing cavity 201 abuts against the inner wall of the metal interface 30, it can better and completely cover the adjacent annular wing portion 322 away from the sealing cavity 201.

[0066] Please refer to the following: Figures 8 to 10It can be understood that the sealing wing 320 includes at least two annular wing portions 322, and each annular wing portion 322 has at least two petal-shaped winglets 3221. The two petal-shaped winglets 3221 of each annular wing portion 322 are arranged circumferentially along the transmission portion 310 to form two contact areas 32223222. Each petal-shaped winglet 3221 of each annular wing portion 322 is connected to the same annular line on the peripheral wall of the annular connecting portion 321. The two petal-shaped winglets 3221 of each annular wing portion 322 correspond one-to-one with the two contact areas 3222 of the adjacent annular wing portion 322, so that the two petal-shaped winglets 3221 of the two annular wing portions 322 both protrude from the annular connecting portion 321 at the same position. Please refer to [further details omitted]. Figures 4 to 5 Then, the two petal-shaped winglets 3221 of the two annular winglet portions 322 can be stacked and tightly attached to each other. After the metal interface 30 is filled with gas, the radius of the perimeter formed by the two petals of the two annular winglet portions 322 increases, similar to petals being stacked and staggered from the same root. When they open, the outer perimeter expands, so that even with each petal-shaped winglet 3221 of each annular winglet portion 322 being spaced apart from the metal interface 30, each petal-shaped winglet 3221 of each annular winglet portion 322 can still be effectively attached to the inner wall of the metal interface 30. When each annular winglet portion 322 near the sealing cavity 201 abuts against the inner wall of the metal interface 30, it can better and completely cover the adjacent annular winglet portion 322 that is far away from the sealing cavity 201, thus improving the sealing stability of the metal interface 30.

[0067] In one embodiment, the two petal-shaped flaps of each annular flap portion at least partially overlap at each corresponding junction area, which better ensures that when all petal-shaped flaps are open, the multiple petal-shaped flaps of each annular flap portion completely cover the multiple junction areas of the adjacent annular flap.

[0068] Please refer to the following: Figures 8 to 10 In one embodiment, the two petal-shaped flaps 3221 of each annular flap portion 322 at least partially abut against the peripheral walls at each corresponding border area 3222, which better ensures that when all the petal-shaped flaps 3221 are open, the multiple petal-shaped flaps 3221 of each annular flap portion 322 completely cover the multiple border areas 3222 of the adjacent another annular flap portion 322.

[0069] In one embodiment, when the sealing wing and the metal interface are coaxially arranged, the distance between the sealing wing and the metal interface is less than 1 / 10 of the minimum width of the sealing wing, and the minimum width of the sealing wing is 1 / 3 to 1 / 10 of the distance of the metal structure. Furthermore, the two petal-shaped winglets of each annular winglet portion are spaced apart at each corresponding junction area, and the maximum spacing is less than 1 / 3 of each annular winglet portion, which better ensures that when all petal-shaped winglets are open, the multiple petal-shaped winglets of each annular winglet portion completely cover the multiple junction areas of the adjacent annular winglet.

[0070] Please refer to the following: Figures 8 to 10 In one embodiment, the annular connecting portion 321 of each sealing wing 320 and the two annular wing portions 322 of each corresponding annular wing portion 322 are integrally formed.

[0071] Please refer to the following: Figures 1 to 3 In one embodiment, the airtightness testing fixture 10 for the antenna further includes a drive member 400, which is connected to the fixed base 100 and the power output end of the drive member 400 is connected to the transmission part 310 to drive the transmission member to slide in a direction closer to or away from the sealing cavity 201.

[0072] This application also provides a method for testing the airtightness of an antenna, which is performed using an antenna airtightness testing fixture according to any of the above embodiments. Further, the above-described antenna airtightness testing method includes the following steps: fixing the antenna within an airtight cavity; performing a first drive on the transmission part to slide it towards the sealing cavity until it drives a sealing wing to extend into the metal interface, the distance the sealing wing extends into the metal interface being a preset distance; performing a second drive on the transmission part after the first drive to slide it away from the sealing cavity until it drives the sealing wing to move away from the sealing cavity, the distance the sealing wing moves away from the sealing cavity being less than a preset distance; and performing an airtightness testing on the antenna. Further, in this embodiment, the antenna airtightness testing fixture includes a fixed base, a movable base, and a sealing assembly. The movable base can move towards or away from the fixed base, and when the movable base and the fixed base are molded together, they form a sealing cavity, which is used to house the antenna box and the metal interface. The sealing assembly includes a drive unit and at least one sealing flange. The drive unit is slidably connected to a fixed base and slides towards or away from the sealing cavity. The sealing flange is connected to the outer peripheral wall of the drive unit. When the drive unit slides towards the sealing cavity to drive the sealing flange into the metal interface, the drive unit and the metal interface are spaced apart. After the metal interface is filled with gas, the sealing flange adheres to the inner wall of the metal interface.

[0073] The above-mentioned method for testing the airtightness of antennas,

[0074] To better understand the airtightness testing method for the antenna of this application, the following further explanation and description of the airtightness testing method for the antenna of this application is provided:

[0075] One embodiment of the antenna's airtightness testing method includes the following steps:

[0076] S100. The antenna is placed in the airtight cavity for fixation, so that the antenna box and the metal interface are placed together in the sealed cavity for positioning and fixation.

[0077] S200: Perform a drive operation on the transmission unit to slide it towards the sealing cavity until it drives the sealing wing to extend into the metal interface. The distance the sealing wing extends into the metal interface is a preset distance. Further, the preset distance is the distance the sealing wing extends further into the metal interface after it is fully inserted, that is, the distance between the end face of the sealing wing away from the sealing cavity and the end face of the metal interface away from the sealing cavity.

[0078] S300: A secondary drive process is performed on the transmission unit after the primary drive process, causing the transmission unit to slide away from the sealing cavity and drive the sealing wing to move away from the sealing cavity. The distance the sealing wing moves away from the sealing cavity is less than a preset distance. It is understood that, to reduce the flipping of the sealing wing caused by the inner wall of the metal interface, this invention includes at least two petal-shaped wing sections in each annular wing section. When each petal-shaped wing is coaxially arranged with the metal interface, each petal-shaped wing is spaced apart from the metal interface. Although each petal-shaped wing is designed to avoid contact with the inner wall of the metal interface, the distance between each petal-shaped wing and the inner wall of the metal interface is still relatively close. Therefore, the alignment accuracy between the transmission unit and the metal interface during sliding is required to be high. Improving the alignment accuracy between the transmission unit and the metal interface during sliding requires adding more sensors and processors, resulting in higher costs. Therefore, to reduce... In this case, the cost of antenna airtightness testing is reduced by driving the transmission part to slide away from the metal interface after it extends a preset distance into the metal interface. However, the sealing wing remains completely inside the metal interface. With each lobe wing coaxially arranged with the metal interface and spaced apart, the metal interface further flips each flipped lobe wing through friction with the metal interface. At the same time, the metal interface has no effect on each lobe wing wing that has not flipped. This effectively reduces the cost of antenna airtightness testing while ensuring the sealing stability at the metal interface, thereby improving the stability of antenna airtightness testing.

[0079] S400. Perform an airtightness test on the antenna. This airtightness test involves routine procedures such as filling the antenna box with gas through a metal interface, maintaining pressure, and releasing pressure. Specific operational parameters and details are standard technical methods and will not be elaborated upon here.

[0080] The above-mentioned antenna airtightness testing method effectively reduces the cost of antenna airtightness testing while ensuring the sealing stability of the metal interface, thereby improving the stability of antenna airtightness testing.

[0081] Compared with the prior art, the present invention has at least the following advantages:

[0082] The airtightness testing fixture 10 for the antenna of the present invention forms a sealed cavity 201 by closing the fixed base 100 and the movable base 200, providing a relatively stable gas environment for airtightness testing of the antenna. This is achieved by the transmission part 310 moving towards or away from the sealed cavity 201, with the sealing wing 320 surrounding and connected to the outer peripheral wall of the transmission part 310. This allows the transmission part 310 to drive the sealing wing 320 towards or away from the sealed cavity 201. When the transmission part 310 slides towards the sealed cavity 201 and drives the sealing wing 320 into the metal interface 30, the transmission part 310 and the metal interface 30 are spaced apart. After the sealing wing 320 is filled with gas, it adheres to the metal interface 30. On the inner wall of the interface 30, during the inflation preparation for antenna airtightness testing, at least part of the transmission part 310 and the sealing wing 320 will extend into the metal interface 30. However, the transmission part 310 and the metal interface 30 are positioned to avoid impact on the metal interface 30, which reduces local deformation of the antenna. Furthermore, the sealing wing 320 adheres to the inner wall of the metal interface 30 after gas is filled into the metal interface 30. This ensures that the sealing wing 320 adheres to the inner wall of the metal interface 30 and works with the transmission part 310 to seal the metal interface 30. This helps to ensure effective sealing of the antenna's inflation port when gas is filled into the metal interface 30 through the transmission part 310.

[0083] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A fixture for testing the airtightness of an antenna, used for testing the airtightness of an antenna, the antenna comprising an antenna housing and a metal interface, at least a portion of the metal interface protruding from the side wall of the antenna housing, the periphery of the metal interface being tightly connected to the antenna housing, and the metal interface communicating with the antenna housing; characterized in that, The airtightness testing fixture for the antenna includes: Fixed base; A movable base, which can move towards or away from the fixed base, and forms a sealed cavity when the movable base and the fixed base are molded together. The sealed cavity is used to house the antenna box and the metal interface together. A sealing assembly, the sealing assembly including a transmission part and at least one sealing wing, the transmission part being slidably connected to the fixed base, the transmission part sliding toward or away from the sealing cavity, and the sealing wing being connected to the outer peripheral wall of the transmission part around the transmission part; When the transmission part slides toward the sealing cavity to drive the sealing wing to extend into the metal interface, the transmission part is spaced apart from the metal interface, and the sealing wing adheres to the inner wall of the metal interface after being filled with gas.

2. The antenna airtightness testing fixture according to claim 1, characterized in that, The sealing assembly further includes a sealing support portion connected to the side of the transmission portion near the sealing cavity, and the sealing wing is connected to the outer periphery of the sealing support portion; The transmission part slides toward the direction of the sealing cavity, thereby driving the sealing support part and the sealing wing to extend into the metal interface. The sealing support part is spaced apart from the metal structure.

3. The antenna airtightness testing fixture according to claim 2, characterized in that, The sealing support and the sealing wing are integrally formed; and / or... The sealing support is an elastic silicone support; and / or, The sealing support is at least partially embedded in the transmission part; and / or The sealing support is integrally formed on the transmission part; and / or The sealing wing is an elastic silicone wing; and / or, When the sealing wing is coaxially arranged with the metal interface, the distance between the sealing wing and the metal interface is less than 1 / 10 of the minimum width of the sealing wing, and the minimum width of the sealing wing is 1 / 3 to 1 / 10 of the distance of the metal structure.

4. The antenna airtightness testing fixture according to claim 1, characterized in that, The number of sealing fins is two or more, and the two or more sealing fins are arranged linearly along the sliding direction of the transmission part, with each sealing fin surrounding and connected to the outer peripheral wall of the transmission part.

5. The antenna airtightness testing fixture according to claim 1, characterized in that, The sealing wing includes an annular connecting portion and at least two annular wing portions. The annular connecting portion is sleeved on the peripheral wall of the transmission portion. The two annular wing portions are arranged along the sliding direction of the transmission portion. Each annular wing portion is connected to the annular connecting portion, and one end of each annular wing portion protrudes from the side of the annular connecting portion away from the transmission portion and extends toward the sealing cavity. When the transmission part slides towards the sealing cavity and drives the annular connecting part and the two annular wing parts to extend into the metal interface, the transmission part and the annular connecting part are spaced apart from the metal interface, and each annular wing part is attached to the inner wall of the metal interface after being filled with gas.

6. The antenna airtightness testing fixture according to claim 5, characterized in that, Each of the annular wing portions includes at least two petal-shaped winglets. The two petal-shaped winglets of each annular wing portion are arranged circumferentially along the transmission portion to form two receiving areas. Each petal-shaped winglet of each annular wing portion is connected to the same ring line on the peripheral wall of the annular connecting portion. The ring line is arranged around the circumference of the annular connecting portion. One end of each of the petal-shaped winglets in each of the annular winglet portions protrudes from the side of the annular connecting portion away from the transmission portion and extends toward the sealing cavity; Each of the two petal-shaped winglets of the annular winglet portion covers the two bordering areas of the adjacent annular winglet portion 322 in a one-to-one correspondence; When the transmission part slides toward the sealing cavity and drives the annular connecting part and each of the petal-shaped winglets of each annular winglet part to extend into the metal interface, each of the petal-shaped winglets of two adjacent annular winglet parts is stacked and attached to each other, and each of the petal-shaped winglets of each annular winglet part is spaced apart from the metal interface and is attached to the inner wall of the metal interface after being filled with gas.

7. The antenna airtightness testing fixture according to claim 6, characterized in that, The two petal-shaped flaps of each of the aforementioned annular flap portions at least partially overlap at their respective junction areas; or, The two lobed flaps of each of the aforementioned annular flap portions abut at least partially at their peripheral walls in each corresponding contact area; or, Two petal-shaped flaps of each annular flap portion are spaced apart at each corresponding junction area, and the maximum spacing distance is less than 1 / 3 of each annular flap portion.

8. The antenna airtightness testing fixture according to claim 6, characterized in that, The annular connecting portion of each sealing wing and the two annular wing portions of each corresponding annular wing portion are integrally formed.

9. The airtightness testing fixture for antennas according to claim 1, characterized in that, The airtightness testing fixture for the antenna also includes a driving component, which is connected to the fixed base and the power output end of the driving component is connected to the transmission part to drive the transmission component to slide towards or away from the sealing cavity.

10. A method for detecting the airtightness of an antenna, characterized in that, The airtightness testing fixture for the antenna according to any one of claims 1 to 9 shall be used, and the airtightness testing method for the antenna includes the following steps: The antenna is fixed within a hermetically sealed cavity. The transmission unit is driven once to slide towards the sealing cavity until the sealing wing extends into the metal interface. The distance the sealing wing extends into the metal interface is a preset distance. The transmission unit after the first driving process is subjected to a second driving process so that the transmission unit slides away from the sealing cavity and drives the sealing wing to move away from the sealing cavity. The distance that the sealing wing moves away from the sealing cavity is less than the preset distance. The antenna is subjected to airtightness testing.

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