A kind of vehicle-mounted T-Box antenna and the conformal multi-frequency stack flexible circuit board of PCB

Abstract

The utility model provides a kind of vehicle-mounted T-Box antenna and the conformal multi-frequency stack flexible circuit board of PCB, it is related to circuit board technical field, including adsorption fixed rod, the inside of the adsorption fixed rod is provided with the sealing rubber plug that adjusts its internal air pressure, and the one end of the sealing rubber plug is fixedly installed with fastening reinforcing disc.The utility model has the advantages that: in the support piece inside conformal installation of multi-frequency stack flexible circuit board is provided and the adsorption fixed rod of flexible circuit board base body negative pressure suction, and the inside of adsorption fixed rod is provided with sealing rubber plug and fastening reinforcing disc that moves in adsorption fixed rod inside one-way with vibration, so that fastening reinforcing disc uses the energy generated by vibration to pull sealing rubber plug to move, the adsorption pressure in adsorption fixed rod is enhanced, the fastening of adsorption fixed rod to flexible circuit board base body can be gradually enhanced with the generation of vibration, to enhance the stability of flexible circuit board installation, reduce the risk of falling off.

Description

Technical Field

[0001] This utility model relates to the field of circuit board technology, and in particular to a multi-frequency stacked flexible circuit board that conforms to a vehicle-mounted T-Box antenna and a PCB. Background Technology

[0002] In the field of intelligent connected vehicles, the in-vehicle T-Box (telematics processor) is a core component for realizing vehicle networking, positioning, and data interaction. Its communication performance directly depends on the collaborative work between the antenna and the PCB (printed circuit board). The in-vehicle T-Box needs to support multi-band communication (such as GPS, 4G / 5G, Bluetooth, WiFi, etc.), while the antenna, as a signal transceiver terminal, needs to work closely with the PCB to reduce signal loss, while also adapting to the complex installation space inside the vehicle (such as curved surfaces or narrow areas like the dashboard and A-pillars).

[0003] However, the existing multi-frequency stacked flexible circuit boards use soldering or connectors to connect the conformal antenna to the PCB, which is prone to detachment under vibration and has poor reliability. Utility Model Content

[0004] Therefore, the purpose of this utility model is to propose a multi-frequency stacked flexible circuit board that conforms to the vehicle-mounted T-Box antenna and PCB, so as to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0005] To achieve the above objectives, one embodiment of this utility model provides a multi-frequency stacked flexible circuit board conformally integrated with a vehicle-mounted T-Box antenna and a PCB, comprising a flexible circuit board substrate composed of a flexible substrate and a stacked structure. A power supply and matching circuit and a signal processing module are disposed inside the flexible circuit board substrate. A support plate is disposed at one end of the flexible circuit board substrate to support it. A damping plate for vibration protection is fixedly installed at one end of the support plate. An adsorption fixing rod is disposed on one side of the damping plate, penetrating the support plate and fitting the flexible circuit board substrate. A sealing plug for adjusting the internal air pressure is disposed inside the adsorption fixing rod. A fastening and reinforcing plate is fixedly installed at one end of the sealing plug. An elastic sealing pad for limiting the position is disposed on one side of the fastening and reinforcing plate. An energy-absorbing air cylinder is fixedly installed at one end of the elastic sealing pad.

[0006] The above technical solution is adopted: the flexible substrate material uses polyimide (PI) or polyester (PET) film as the substrate, which has high flexibility and bending resistance. The substrate surface is formed with copper foil layer through vacuum magnetron sputtering or electroplating process, which serves as the carrier of antenna radiator and circuit trace. The multi-layer stacked structure adopts a layered layout, and spatial isolation of multi-band antennas is achieved by alternately stacking copper foil and dielectric layer. The blind or buried via technology of laser drilling is used to realize the electrical interconnection between layers, avoiding the influence of traditional through holes on the bending performance of flexible substrate.

[0007] Preferably, in any of the above embodiments, the support plate has mounting slots for fixing the adsorption rod and the energy-absorbing air cylinder inside, and the support plate is made of lightweight material and is glued to one end of the flexible circuit board substrate.

[0008] The above technical solution is adopted: the support plate (foamed polypropylene material) is glued to one end of the flexible circuit board substrate with acrylic adhesive. The internal mounting slots precisely position the adsorption fixing rod and the energy-absorbing air cylinder to avoid component shaking. The lightweight material characteristics reduce the bending burden on the flexible circuit board substrate, while providing rigid support for the damping plate and adsorption structure, ensuring the structural stability when the multi-frequency antenna is conformally installed with the PCB.

[0009] Preferably, in any of the above embodiments, the size of the damping sheet is larger than the size of the support sheet, and the interior of the damping sheet has a groove that accommodates an elastic sealing pad and communicates with the mounting slot.

[0010] The above technical solution is adopted: the damping sheet (made of butyl rubber) is larger than the support sheet, completely covering the support area to form a vibration buffer layer. The mechanical energy is converted into heat energy through the internal molecular friction of the material, which attenuates the vibration generated by the vehicle. The internal groove (connected to the mounting slot) accommodates the elastic sealing pad, ensuring that the sealing pad is not obstructed when it deforms with vibration, while enhancing the fit and sealing of the damping sheet and the support sheet.

[0011] Preferably, in any of the above embodiments, the adsorption fixing rod has an adsorption cavity inside to accommodate the sealing plug, one end of the adsorption cavity is provided with a limiting toothed ring to support the fastening and reinforcing plate, and the end of the adsorption fixing rod that is in contact with the flexible circuit board substrate is provided with a sealing rubber ring for sealing.

[0012] The above technical solution is adopted: the adsorption cavity inside the adsorption fixing rod (ABS material) forms a closed space with the surface of the flexible circuit board substrate. The end sealing ring (fluororubber material) ensures airtightness. The limiting tooth ring (polyoxymethylene material) is located at the end of the adsorption cavity and cooperates with the biting teeth of the fastening and reinforcing plate to form a one-way locking structure to prevent the reinforcing plate from moving in the opposite direction and causing the air pressure to rise. When the air pressure inside the adsorption cavity decreases, the external atmospheric pressure pushes the adsorption fixing rod to fit tightly against the flexible circuit board substrate, realizing welding-free fixing.

[0013] Preferably, in any of the above embodiments, the sealing plug includes a movable plug for sealing the adsorption fixing rod and a tension line for pulling. The movable plug is movably connected to the inside of the adsorption fixing rod, and one end of the movable plug is fixedly installed with a tension line that is fixedly installed with the fastening and reinforcing plate.

[0014] The above technical solution is adopted: the movable plug (made of nitrile rubber) slides inside the adsorption fixing rod, and the air pressure is adjusted by changing the volume of the adsorption chamber. One end of the tension line (made of aramid fiber) is connected to the movable plug, and the other end is fixed to the fastening and reinforcing plate. When the reinforcing plate is vibrated and pulled, the tension line drives the movable plug to move out of the chamber, which further reduces the air pressure in the adsorption chamber and increases the adsorption force. The sealing characteristics of the movable plug ensure that there is no leakage during the air pressure adjustment process.

[0015] Preferably, in any of the above embodiments, the fastening and reinforcing disc is provided with meshing teeth that engage with the limiting tooth ring, the elastic sealing pad is engaged with one end of the adsorption fixing rod, and the elastic sealing pad is located inside the damping sheet.

[0016] The above technical solution is adopted: the meshing teeth of the reinforcing plate (polycarbonate material) engage unidirectionally with the limiting tooth ring, allowing the reinforcing plate to be pulled outward along the axial direction of the adsorption chamber. However, when moving in the opposite direction, the tooth surface interference forms a lock, preventing the movable plug from rebounding and causing air pressure loss. The elastic sealing pad (silicone rubber material) is engaged with one end of the adsorption fixing rod, and its lip is tightly fitted with the groove of the damping plate, which not only enhances the sealing of the adsorption structure, but also transmits the vibration energy to the energy-absorbing air cylinder, realizing the linkage of "vibration-adsorption force enhancement".

[0017] Preferably, in any of the above embodiments, the energy-absorbing cylinder includes an energy-absorbing push rod for pushing, an energy-absorbing plug for sealing, and a high-pressure energy-absorbing cylinder for generating high pressure. The energy-absorbing push rod is fixedly installed at one end of the elastic sealing pad, and an energy-absorbing plug is fixedly installed at one end of the energy-absorbing push rod. The energy-absorbing plug is located inside the high-pressure energy-absorbing cylinder and is movably connected to the inside of the high-pressure energy-absorbing cylinder. The diameter of the energy-absorbing push rod is smaller than the inner diameter of the high-pressure energy-absorbing cylinder, and the high-pressure energy-absorbing cylinder is fixedly installed inside the support plate.

[0018] The above technical solution is adopted: the energy-absorbing push rod (made of stainless steel) moves back and forth with the vibration of the elastic sealing pad, which drives the energy-absorbing plug (made of nitrile rubber, which is matched with the high-pressure energy-absorbing cylinder) to slide inside the high-pressure energy-absorbing cylinder (made of aluminum alloy). When the energy-absorbing plug moves, the air inside the cylinder is compressed and absorbs vibration energy through the elastic force of the gas, forming a secondary vibration reduction. The diameter of the energy-absorbing push rod is smaller than the inner diameter of the high-pressure energy-absorbing cylinder, leaving a gap for gas flow, avoiding air resistance when the energy-absorbing plug moves, and ensuring a smooth buffering process.

[0019] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows: 1. An adsorption fixing rod is set inside the support plate for conformal mounting of multi-frequency stacked flexible circuit boards, which is attracted to the flexible circuit board substrate by negative pressure. A sealing plug and a fastening and reinforcement plate that move unidirectionally inside the adsorption fixing rod with vibration are set inside the adsorption fixing rod. The fastening and reinforcement plate uses the energy generated by vibration to pull the sealing plug to move, thereby increasing the adsorption pressure inside the adsorption fixing rod. As vibration is generated, the fastening and reinforcement of the adsorption fixing rod to the flexible circuit board substrate is gradually strengthened, thereby enhancing the stability of the flexible circuit board installation, reducing the risk of detachment, and improving the reliability of the installation.

[0020] 2. An energy-absorbing air cylinder connected to an elastic sealing pad is installed inside the support plate. The elastic sealing pad enables the energy-absorbing air cylinder to resist certain oscillation effects during vibration by changing the internal pressure, thereby improving the stability of the flexible circuit board installation.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure according to an embodiment of the present utility model; Figure 2 This is a partial structural schematic diagram according to an embodiment of the present utility model; Figure 3 This is a cross-sectional structural diagram of the support sheet according to an embodiment of the present invention; Figure 4 This is a cross-sectional structural diagram of the energy-absorbing air cylinder according to an embodiment of the present utility model; Among them: 1-flexible circuit board substrate, 2-support plate, 3-damping plate, 4-adsorption fixing rod, 5-sealing plug, 51-movable plug, 52-tension line, 6-fastening and reinforcing plate, 7-elastic sealing pad, 8-energy absorbing air cylinder, 81-energy absorbing push rod, 82-energy absorbing plug, 83-high pressure energy absorbing cylinder, 9-limiting tooth ring, 10-meshing tooth. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0024] like Figure 1-4As shown in the figure, a vehicle-mounted T-Box antenna conformally to a PCB and a multi-frequency stacked flexible circuit board according to an embodiment of the present invention includes a flexible circuit board substrate 1 composed of a flexible substrate and a stacked structure. A power supply and matching circuit and a signal processing module are arranged inside the flexible circuit board substrate 1. A support plate 2 is provided at one end of the flexible circuit board substrate 1 to support it. A damping plate 3 for vibration protection is fixedly installed at one end of the support plate 2. An adsorption fixing rod 4 is provided on one side of the damping plate 3 to penetrate the support plate 2 and fit against the flexible circuit board substrate 1. A sealing plug 5 is provided inside the adsorption fixing rod 4 to adjust the internal air pressure. A fastening and reinforcing plate 6 is fixedly installed at one end of the sealing plug 5. An elastic sealing pad 7 for limiting its position is provided on one side of the fastening and reinforcing plate 6. An energy-absorbing air cylinder 8 is fixedly installed at one end of the elastic sealing pad 7.

[0025] The above technical solution uses polyimide (PI) or polyester (PET) film as the substrate for the flexible substrate material, which has high flexibility and bending resistance. A copper foil layer is formed on the substrate surface by vacuum magnetron sputtering or electroplating process, which serves as the carrier for antenna radiators and circuit traces. The multi-layer stacked structure adopts a layered layout, and spatial isolation of multi-band antennas is achieved by alternately stacking 2-12 layers of copper foil and dielectric layers. Blind holes or buried holes are used by laser drilling technology to achieve interlayer electrical interconnection, avoiding the influence of traditional through holes on the bending performance of the flexible substrate.

[0026] Preferably, in any of the above embodiments, the support plate 2 has mounting slots for fixing the adsorption rod 4 and the energy-absorbing air cylinder 8 inside, and the support plate 2 is made of lightweight material and is glued to one end of the flexible circuit board substrate 1.

[0027] The above technical solution is adopted: the support plate 2 (foamed polypropylene material) is glued to one end of the flexible circuit board substrate 1 with acrylic adhesive. The internal mounting slots precisely position the adsorption fixing rod 4 and the energy-absorbing air cylinder 8 to prevent the components from shaking. The lightweight material characteristics reduce the bending burden on the flexible circuit board substrate 1, while providing rigid support for the damping plate 3 and the adsorption structure, ensuring the structural stability when the multi-frequency antenna is conformally installed with the PCB.

[0028] Preferably, in any of the above solutions, the size of the damping plate 3 is larger than the size of the support plate 2, and the damping plate 3 has a groove inside that accommodates the elastic sealing pad 7 and is connected to the mounting slot.

[0029] The above technical solution is adopted: the damping plate 3 (made of butyl rubber) is larger than the support plate 2, and completely covers the support area to form a vibration buffer layer. The mechanical energy is converted into heat energy through the internal molecular friction of the material, which attenuates the vibration generated by the vehicle. The internal groove (connected to the mounting slot) accommodates the elastic sealing pad 7, ensuring that the sealing pad is not obstructed when it deforms with vibration, and at the same time enhances the fit and sealing of the damping plate and the support plate.

[0030] Preferably, in any of the above embodiments, the adsorption fixing rod 4 has an adsorption cavity inside that accommodates the sealing plug 5, one end of the adsorption cavity is provided with a limiting toothed ring 9 that supports the fastening and reinforcing plate 6, and the end of the adsorption fixing rod 4 that is in contact with the flexible circuit board substrate 1 is provided with a sealing ring for sealing.

[0031] The above technical solution is adopted: the adsorption cavity inside the adsorption fixing rod 4 (ABS material) forms a closed space with the surface of the flexible circuit board substrate 1. The end sealing ring (fluororubber material) ensures airtightness. The limiting tooth ring 9 (polyoxymethylene material) is located at the end of the adsorption cavity and cooperates with the biting teeth 10 of the fastening and reinforcing plate 6 to form a one-way locking structure to prevent the reinforcing plate from moving in the opposite direction and causing the air pressure to rise. When the air pressure inside the adsorption cavity decreases, the external atmospheric pressure pushes the adsorption fixing rod 4 to fit tightly against the flexible circuit board substrate 1, so as to achieve welding-free fixing.

[0032] Preferably, in any of the above embodiments, the sealing plug 5 includes a movable plug 51 for sealing the adsorption fixing rod 4 and a tension line 52 for pulling. The movable plug 51 is movably connected to the inside of the adsorption fixing rod 4, and one end of the movable plug 51 is fixedly installed with the tension line 52, which is fixedly installed with the fastening and reinforcing plate 6.

[0033] The above technical solution is adopted: the movable plug 51 (made of nitrile rubber) slides inside the adsorption fixing rod 4, and the air pressure is adjusted by changing the volume of the adsorption chamber. One end of the tension line 52 (made of aramid fiber) is connected to the movable plug, and the other end is fixed to the fastening and reinforcing plate 6. When the reinforcing plate is vibrated and pulled, the tension line drives the movable plug to move out of the chamber, which further reduces the air pressure in the adsorption chamber and increases the adsorption force. The sealing characteristics of the movable plug ensure that there is no leakage during the air pressure adjustment process.

[0034] Preferably, in any of the above schemes, the fastening and reinforcing disc 6 is provided with engagement teeth 10 that engage with the limiting tooth ring 9, and the elastic sealing pad 7 is engaged with one end of the adsorption fixing rod 4, with the elastic sealing pad 7 located inside the damping sheet 3.

[0035] The above technical solution is adopted: the interlocking teeth 10 of the circumference of the fastening and reinforcing plate 6 (polycarbonate material) engage unidirectionally with the limiting tooth ring 9, allowing the reinforcing plate to be pulled outward along the axial direction of the adsorption cavity, but when it moves in the opposite direction, the tooth surface interference forms a lock to prevent the movable plug from rebounding and causing air pressure loss. The elastic sealing pad 7 (silicone rubber material) is engaged with one end of the adsorption fixing rod 4, and its lip is tightly fitted with the groove of the damping plate 3, which not only enhances the sealing of the adsorption structure, but also transmits the vibration energy to the energy-absorbing air cylinder 8, realizing the linkage of "vibration-adsorption force enhancement".

[0036] Preferably, in any of the above embodiments, the energy-absorbing cylinder 8 includes an energy-absorbing push rod 81 for pushing, an energy-absorbing plug 82 for sealing, and a high-pressure energy-absorbing cylinder 83 for generating high pressure. The energy-absorbing push rod 81 is fixedly installed at one end of the elastic sealing pad 7, and the energy-absorbing plug 82 is fixedly installed at one end of the energy-absorbing push rod 81. The energy-absorbing plug 82 is located inside the high-pressure energy-absorbing cylinder 83 and is movably connected to the inside of the high-pressure energy-absorbing cylinder 83. The diameter of the energy-absorbing push rod 81 is smaller than the inner diameter of the high-pressure energy-absorbing cylinder 83, and the high-pressure energy-absorbing cylinder 83 is fixedly installed inside the support plate 2.

[0037] The above technical solution is adopted: the energy-absorbing push rod 81 (stainless steel) moves back and forth with the vibration of the elastic sealing pad 7, which drives the energy-absorbing plug 82 (nitrile rubber, which cooperates with the high-pressure energy-absorbing cylinder 83) to slide inside the high-pressure energy-absorbing cylinder 83 (aluminum alloy). When the energy-absorbing plug moves, the air inside the cylinder is compressed and absorbs vibration energy through the elastic force of the gas, forming a secondary vibration reduction. The diameter of the energy-absorbing push rod is smaller than the inner diameter of the high-pressure energy-absorbing cylinder, and a gas flow gap is reserved to avoid air resistance when the energy-absorbing plug moves, thus ensuring a smooth buffering process.

[0038] The working principle of this utility model is as follows: A vehicle-mounted T-Box antenna conformally integrated with a PCB multi-frequency stacked flexible circuit board is as follows: The flexible circuit board substrate 1 achieves multi-band signal transmission through a multi-layer stacked structure. One end of the support plate 2 is fixed with adhesive, providing stable support for the overall structure. A damping plate 3 at one end of the support plate 2 covers the support area. When the vehicle vibrates, the damping plate attenuates the vibration energy through molecular friction within the material, initially reducing the impact of oscillations. The adsorption fixing rod 4 penetrates the support plate 2 and the flexible circuit board substrate 1, forming a closed space between its internal adsorption cavity and the surface of the flexible circuit board substrate. The movable plug 51 of the sealing plug 5 initially maintains the air pressure inside the cavity. By pulling the fastening and reinforcing plate 6, the tension line 52 moves the movable plug out of the cavity, creating a negative pressure in the adsorption cavity. The end sealing ring ensures airtightness. External atmospheric pressure pushes the adsorption fixing rod to tightly adhere to the flexible circuit board substrate. When the vehicle vibration is transmitted to the elastic sealing pad 7, the sealing pad deforms. On the one hand, it pushes the energy-absorbing push rod 81 of the energy-absorbing air cylinder 8, causing the energy-absorbing plug 82 to slide inside the high-pressure energy-absorbing cylinder 83. The compressed air inside the cylinder forms an elastic force to absorb the vibration energy, which works in conjunction with the damping plate to enhance the vibration reduction effect. On the other hand, the vibration causes the fastening and reinforcing plate 6 to move outward with the oscillation. Its circumferential meshing teeth 10 engage with the limiting tooth ring 9 in one direction to prevent reverse movement. At the same time, the tension line 52 further pulls the movable plug 51, increasing the negative pressure in the adsorption chamber and improving the adhesion of the adsorption fixing rod. The elastic sealing pad 7 and the groove of the damping plate 3 cooperate to ensure both sealing and transmission of vibration energy, realizing the linkage of "vibration-adsorption force enhancement-vibration reduction" and ensuring the stability of the conformal installation of the flexible circuit board and the PCB.

[0039] Compared with the prior art, the present invention has the following advantages: 1. An adsorption fixing rod 4 is set inside the support plate 2 for conformal mounting of the multi-frequency stacked flexible circuit board and is negatively attracted to the flexible circuit board substrate 1. A sealing plug 5 and a fastening and reinforcing plate 6 that moves unidirectionally inside the adsorption fixing rod 4 with vibration are set inside the adsorption fixing rod 4. The fastening and reinforcing plate 6 uses the energy generated by vibration to pull the sealing plug 5 to move, thereby increasing the adsorption pressure inside the adsorption fixing rod 4. As vibration is generated, the fastening and reinforcing rod 4 can gradually increase the tightness of the flexible circuit board substrate 1, thereby enhancing the stability of the flexible circuit board installation, reducing the risk of detachment, and improving the reliability of the installation.

[0040] 2. An energy-absorbing air cylinder 8 connected to an elastic sealing pad 7 is installed inside the support plate 2. The elastic sealing pad 7 enables the energy-absorbing air cylinder 8 to resist certain oscillation effects through changes in internal pressure during vibration, thereby improving the stability of the flexible circuit board installation.

Claims

1. A multi-frequency stacked flexible circuit board conformally to a vehicle-mounted T-Box antenna and a PCB, comprising a flexible circuit board substrate (1) composed of a flexible substrate and a stacked structure, wherein a support sheet (2) is provided at one end of the flexible circuit board substrate (1) to support it, characterized in that: One end of the support plate (2) is fixedly installed with a damping plate (3) for vibration protection. One side of the damping plate (3) is provided with an adsorption fixing rod (4) that penetrates the support plate (2) and fits into the flexible circuit board substrate (1). The adsorption fixing rod (4) is provided with a sealing plug (5) for adjusting the internal air pressure. One end of the sealing plug (5) is fixedly installed with a fastening and reinforcing plate (6). One side of the fastening and reinforcing plate (6) is provided with an elastic sealing pad (7) for limiting its position. One end of the elastic sealing pad (7) is fixedly installed with an energy-absorbing air cylinder (8).

2. The multi-frequency stacked flexible circuit board conformally integrated with a vehicle-mounted T-Box antenna and PCB as described in claim 1, characterized in that: The support plate (2) has mounting slots for fixing the adsorption rod (4) and the energy-absorbing cylinder (8) inside. The support plate (2) is made of lightweight material and is glued to one end of the flexible circuit board substrate (1).

3. The multi-frequency stacked flexible circuit board conformally integrated with a vehicle-mounted T-Box antenna and PCB as described in claim 2, characterized in that: The size of the damping plate (3) is larger than that of the support plate (2). The damping plate (3) has a groove inside that accommodates the elastic sealing pad (7) and is connected to the mounting slot.

4. The multi-frequency stacked flexible circuit board conformally integrating a vehicle-mounted T-Box antenna with a PCB as described in claim 3, characterized in that: The adsorption fixing rod (4) has an adsorption cavity inside that accommodates the sealing plug (5). One end of the adsorption cavity is provided with a limiting toothed ring (9) that supports the fastening and reinforcing plate (6). The end of the adsorption fixing rod (4) that is in contact with the flexible circuit board substrate (1) is provided with a sealing ring for sealing.

5. The multi-frequency stacked flexible circuit board conformally integrating a vehicle-mounted T-Box antenna with a PCB as described in claim 4, characterized in that: The sealing plug (5) includes a movable plug (51) for sealing the adsorption fixing rod (4) and a tension line (52) for pulling. The movable plug (51) is movably connected to the inside of the adsorption fixing rod (4). One end of the movable plug (51) is fixedly installed with the tension line (52) which is fixedly installed with the fastening and reinforcing plate (6).

6. The multi-frequency stacked flexible circuit board conformally integrating a vehicle-mounted T-Box antenna with a PCB as described in claim 5, characterized in that: The fastening and reinforcing plate (6) is provided with meshing teeth (10) that engage with the limiting tooth ring (9) around its circumference. The elastic sealing pad (7) is engaged with one end of the adsorption fixing rod (4). The elastic sealing pad (7) is located inside the damping sheet (3).

7. The multi-frequency stacked flexible circuit board conformally integrating a vehicle-mounted T-Box antenna with a PCB as described in claim 6, characterized in that: The energy-absorbing cylinder (8) includes an energy-absorbing push rod (81) for pushing, an energy-absorbing plug (82) for sealing, and a high-pressure energy-absorbing cylinder (83) for generating high pressure. The energy-absorbing push rod (81) is fixedly installed at one end of the elastic sealing pad (7). The energy-absorbing plug (82) is fixedly installed at one end of the energy-absorbing push rod (81). The energy-absorbing plug (82) is located inside the high-pressure energy-absorbing cylinder (83) and is movably connected to the inside of the high-pressure energy-absorbing cylinder (83). The diameter of the energy-absorbing push rod (81) is smaller than the inner diameter of the high-pressure energy-absorbing cylinder (83). The high-pressure energy-absorbing cylinder (83) is fixedly installed inside the support plate (2).

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