GNSS (Global Navigation Satellite System) antenna device and automotive satellite navigation system

Abstract

The invention provides a GNSS antenna device and a vehicle satellite navigation system, the GNSS antenna device comprises a shell, a GNSS circuit board, at least one wire harness and at least one welding layer, the GNSS circuit board comprises a board body and a shielding case, the shielding case is provided with at least one wiring via hole, the board body is provided with at least one welding copper area, and the welding copper area is arranged close to the wiring via hole; at least one wire harness sequentially penetrates through the threading hole and the wiring via hole, and one end of the wire harness is electrically connected to the plate body; and at least one welding layer is arranged in the corresponding welding copper area so as to block the wiring via hole. After the plate body and the wire harness are assembled, the shielding cover covers the position where the wire harness is electrically connected with the plate body, and then the perforation position between the shielding cover and the wire harness is sealed by adopting a welding process, so that the soldering tin blocks the inner wall of the wiring through hole, and therefore, signals transmitted by the wire harness are effectively absorbed by the shielding cover, and the signals are prevented from being leaked to the surface of the shielding cover; and stable reception of satellite signals is ensured.

Description

Technical Field

[0001] This disclosure relates to the field of communication antenna technology, and in particular to a GNSS antenna device and a vehicle satellite navigation system. Background Technology

[0002] GNSS (Global Navigation Satellite System) antennas are key components of automotive positioning and navigation systems. They are mainly used to receive signals from global navigation satellite systems (such as GPS, BeiDou, Galileo, etc.) to provide vehicles with location, speed, and time information.

[0003] One end of the wire harness passes through the through hole of the outer shell and then through the shield, and finally connects to one end of the GNSS circuit board. The other end of the wire harness is connected to the power supply of the car body. There is a certain gap between the wire harness and the shield, which causes impedance mismatch between the wire harness and the GNSS circuit board. As a result, the signal on the wire harness leaks from the gap to the surface of the shield and is then absorbed by the metal plate on the car body, forming a self-excited current of a certain wavelength. This phenomenon will directly lead to the following problems: (1) The strong oscillation signal generated by self-excitation will completely drown out the weak GNSS signal from the satellite, causing the receiver to be unable to capture and track any satellite. (2) In the case of mild self-excitation, the receiver may still be able to receive some satellite signals, but the strong interference signal will seriously distort the calculation process, resulting in large, irregular jumps or continuous huge errors in the positioning results. Summary of the Invention

[0004] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide a GNSS antenna device and vehicle satellite navigation system that effectively reduces signal self-oscillation and ensures normal satellite signal reception.

[0005] The purpose of this disclosure is achieved through the following technical solution: A GNSS antenna device includes a housing, a GNSS circuit board, at least one wire harness, and at least one solder layer. The housing has a receiving cavity and at least one through-hole, the receiving cavity communicating with the through-hole. At least a portion of the GNSS circuit board is located in the receiving cavity. The GNSS circuit board includes a board body and a shielding cover, the shielding cover being disposed on the GNSS circuit board and having at least one wiring via. The board body has at least one solder copper area adjacent to the wiring via. At least one wire harness sequentially passes through the through-hole and the wiring via, with one end of the wire harness electrically connected to the board body. At least one solder layer is disposed on a corresponding solder copper area to seal the wiring via.

[0006] In one embodiment, the soldered copper area includes an inner soldered copper area and an outer soldered copper area. A shielding cavity is formed between the shield and the plate. The inner soldered copper area is located inside the shielding cavity, and the outer soldered copper area is located outside the shielding cavity. The shielding cavity is connected to the wiring via. The solder layer is respectively disposed in the inner soldered copper area and the outer soldered copper area to seal the wiring via.

[0007] In one embodiment, the inner soldering copper area and the outer soldering copper area are spaced apart.

[0008] In one embodiment, the housing has a baffle with a connection through hole. The wire hole, the connection through hole and the accommodating cavity are sequentially connected, and the wire harness is sequentially passed through the wire hole, the connection through hole and the wiring through hole.

[0009] In one embodiment, there are two baffles, which are spaced apart to form a sealed cavity between them. The connection through hole includes a first connection through hole and a second connection through hole. The first connection through hole is formed in one of the baffles, and the second connection through hole is formed in the other baffle. The wire hole, the first connection through hole, the sealed cavity, the second connection through hole, and the receiving cavity are sequentially connected. The wire harness is sequentially passed through the wire hole, the first connection through hole, the second connection through hole, and the wiring through hole.

[0010] In one embodiment, the GNSS antenna device further includes a sealing ring located inside the sealing cavity, with both sides of the sealing ring abutting against the two baffles respectively, and the wire harness sequentially passing through the wire hole, the first connecting through hole, the sealing ring, the second connecting through hole and the wiring through hole.

[0011] In one embodiment, the housing is provided with a plurality of guide blocks, the plurality of guide blocks are located within the accommodating cavity, and the plurality of guide blocks are mounted on the inner peripheral wall of the housing and abut against the outer periphery of the plate.

[0012] In one embodiment, each of the guide blocks has an inclined guide surface on one side, the inclined guide surface being disposed away from the side of the plate.

[0013] In one embodiment, the housing is provided with a mounting post located within the accommodating cavity, and the plate has a limiting hole through which the mounting post passes.

[0014] A vehicle-mounted satellite navigation system includes the satellite communication antenna device described in any embodiment.

[0015] Compared with the prior art, this disclosure has at least the following advantages: In this GNSS antenna device, after assembling the board and wiring harness, a shield is used to cover the electrical connection points between the wiring harness and the board. Then, a soldering process is employed to seal the through-holes between the shield and the wiring harness. This involves filling the through-holes with solder to seal their inner walls. The solder then spreads to the sidewalls of the shield and solidifies to form a solder layer. This solidified solder layer seals the gap between the shield and the wiring harness. Consequently, during subsequent operation of the GNSS antenna device, the signal transmitted by the wiring harness is effectively absorbed by the shield, preventing signal leakage to the shield surface. This ensures proper impedance matching and significantly reduces the possibility of antenna self-oscillation, thereby guaranteeing stable satellite signal reception. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a GNSS antenna device in one embodiment; Figure 2 for Figure 1 The diagram shows a partial structural schematic of the GNSS antenna device at an angle. Figure 3 for Figure 2 The diagram shows a partial enlarged view of the GNSS antenna device at point A, where the solder layer has sealed the wiring vias. Figure 4 for Figure 2 The diagram shows a partial enlarged view of another embodiment of the GNSS antenna device at point A, where the solder layer does not seal the wiring vias; Figure 5 for Figure 1 The diagram shows a partial structural schematic of the GNSS antenna device at the second angle. Figure 6 for Figure 1 The diagram shows a partial structural view of the GNSS antenna device at the third angle. Figure 7 for Figure 6 A magnified view of the GNSS antenna device shown at point B; Figure 8 for Figure 6 A partial enlarged view of the GNSS antenna device shown at point C; Figure 9 for Figure 1 A partial structural cross-sectional view of the GNSS antenna device shown from another angle; Figure 10 for Figure 9 A magnified view of the GNSS antenna device shown at point D; Figure 11 for Figure 1 The image shown is of a GNSS antenna assembly before the wire harness and shielding are welded together. Figure 12 for Figure 1 The image shown is of the GNSS antenna assembly with the wire bundle and shield already welded together. Figure 13 This is a standing wave test curve of a GNSS antenna device in one embodiment; Figure 14 This is a standing wave test curve of the GNSS antenna device in another embodiment; Figure 15 This is a graph showing the standing wave test data of the GNSS antenna device in this embodiment; Figure 16 for Figure 1 A partial structural schematic diagram of the GNSS antenna device shown in another embodiment.

[0018] Reference numerals: 10, GNSS antenna device; 100, housing; 101, receiving cavity; 102, wiring hole; 110, baffle; 111, upper baffle; 111a, first notch; 111b, latching part; 112, lower baffle; 112a, second notch; 112b, latching groove; 1101, connecting through hole; 11011, first connecting through hole; 11012, second connecting through hole; 1 102. Sealed cavity; 120. Guide block; 121. Inclined guide surface; 130. Mounting post; 200. GNSS circuit board; 210. Board body; 210a. Shielding cavity; 2101. Limiting hole; 211. Welding copper area; 2111. Inner welding copper area; 2112. Outer welding copper area; 220. Shielding cover; 2201. Wiring through hole; 300. Wire harness; 400. Solder layer; 500. Sealing ring. Detailed Implementation

[0019] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the present disclosure. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure.

[0020] 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.

[0021] 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 disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] To better understand the technical solutions and beneficial effects of this disclosure, the following detailed description is provided in conjunction with specific embodiments: Please see Figures 1 to 4 The GNSS antenna device 10, which is an embodiment of the present invention, includes a housing 100, a GNSS circuit board 200, at least one wire harness 300 and at least one solder layer 400. The housing 100 has a receiving cavity 101 and at least one through hole 102, and the receiving cavity 101 communicates with the through hole 102. At least a portion of the structure of the GNSS circuit board 200 is located in the receiving cavity 101. The GNSS circuit board 200 includes a board body 210 and a shield 220. The shield 220 is disposed on the GNSS circuit board 200 and has at least one wiring via 2201. The board body 210 has at least one solder copper area 211, and the solder copper area 211 is disposed adjacent to the wiring via 2201. At least one wire harness 300 is sequentially passed through the through hole 102 and the wiring via 2201, and one end of the wire harness 300 is electrically connected to the board body 210. At least one solder layer 400 is disposed on the corresponding solder copper area 211 to seal the wiring via 2201, thereby sealing the gap between the wire harness 300 and the shield 220. Specifically, since the copper soldering area 211 is adjacent to the wiring via 2201, the solder layer 400 formed by the solidification of the solder after soldering the copper soldering area 211 can effectively block the wiring via 2201.

[0023] In this embodiment, when a wire harness 300 is used, the housing 100 has a wire hole 102, and the wire harness 300 passes through the wire hole 102 and the wiring via 2201. Then, the gap between the wire harness 300 and the shielding cover 220 is sealed by soldering, that is, a solder layer 400 is set in the corresponding soldering copper area 211 to seal a wiring via 2201. Of course, the number of the wire harness 300, wire hole 102, solder layer 400, wiring via 2201 and soldering copper area 211 can also be 2, 3, 4, etc. The number can be adjusted according to actual needs in actual production and testing. It should be noted that this description is only for explanation of this solution and not for limitation of this solution.

[0024] In the above embodiment, after assembling the board 210 and the wiring harness 300, the electrical connection between the wiring harness 300 and the board 210 is covered by a shielding cover 220. Then, a welding process is used to seal the through-hole between the shielding cover 220 and the wiring harness 300, that is, to fill the wiring through-hole 2201 with solder to seal the inner wall of the wiring through-hole 2201. Subsequently, the solder will spread to the side wall of the shielding cover 220. After the solder solidifies, it forms a solder layer 400, which seals the gap between the shielding cover 220 and the wiring harness 300. Therefore, when the GNSS antenna device 10 is working, the signal transmitted by the wiring harness 300 is effectively absorbed by the shielding cover 220, preventing the signal from leaking to the surface of the shielding cover 220, ensuring normal impedance matching and significantly reducing the possibility of antenna self-oscillation, thereby ensuring stable reception of satellite signals.

[0025] It is understandable that, prior to soldering between the wire harness 300 and the shielding cover 220, as described in the background art, there is a certain gap between the wire harness 300 and the shielding cover 220, such as... Figure 4 As shown, the signal on the wiring harness 300 leaks from the gap onto the surface of the shield 220, and is subsequently absorbed by the metal plate on the vehicle body, forming a self-excited current of a certain wavelength. This current is captured by the receiver, resulting in a signal self-excited waveform. The specific standing wave distribution diagram is shown below. Figure 13 As shown, under the specified frequency signals, the highest VSWR (Voltage Standing Wave Ratio) reaches 1.60, corresponding to a frequency signal of 1.61 GHz, and the lowest VSWR reaches 1.29, corresponding to a frequency signal of 1.189 GHz. The VSWRs for other frequency signals all exceed 1.50. Therefore, to solve the aforementioned self-oscillation problem, exposed copper can be used to create one or more solderable copper areas 211 on the board 210. Solder is then applied to the gaps between the shield 220 and the wiring harness 300 to fill the vias 2201. After the solder solidifies, the gaps between the shield 220 and the wiring harness 300 are sealed. One specific structure is shown below. Figure 3As shown in the figure, the specific standing wave distribution diagram in subsequent tests is as follows: Figure 14 As shown, the voltage standing wave ratio (VSWR) is effectively reduced compared to the VSWR without solder. At the specified frequencies, the highest VSWR reaches 1.42, corresponding to a frequency of 1.189 GHz, and the lowest VSWR reaches 1.22, corresponding to a frequency of 1.559 GHz. The VSWRs at other frequencies do not exceed 1.40. The overall VSWR is lower than that without the soldered shield. This confirms that by sealing the wiring via 2201 with solder layer 400, the transmission signal of the wire harness 300 can be effectively absorbed by the shield 220 in subsequent tests, ensuring stable reception of satellite signals.

[0026] Furthermore, Figure 15 This is a graph showing the average standing wave ratio (SWR) data of the GNSS antenna device in this embodiment. By comparing the test results before and after soldering, it can be seen that after soldering between the wire harness 300 and the shield 220, the corresponding SWR at a specific frequency is lower than that without soldering between the wire harness 300 and the shield 220. This effectively reduces the probability of antenna self-oscillation. Specifically, in the data without the shield, the lowest SWR is 1.4 and the highest SWR is 1.6, while in the data with the shield soldered, the lowest SWR is 1.15 and the highest SWR is 1.34.

[0027] In one embodiment, the soldering assembly process of the GNSS antenna device 10 includes some or all of the following steps: S101. Exposed copper treatment is performed on the board 210 to form one or more solder copper areas 211; S102, Assemble the board 210 and the wire harness 300, so that one end of the wire harness 300 is electrically connected to the board 210; S103. Install a shielding cover 220 so that the shielding cover 220 covers the part of the electrical connection between the wire harness 300 and the board 210, wherein the wiring via 2201 of the shielding cover 220 is adjacent to the soldered copper area 211, and the wire harness 300 passes through the wiring via 2201 of the shielding cover 220. S104. Perform a welding step in the copper welding area 211 to ensure that the solder is applied within the copper welding area 211. S105. Let stand until the solder in the soldering copper area 211 solidifies to form a solder layer 400 to make an antenna pre-assembly. The solder layer 400 in the soldering copper area 211 seals the wiring via 2201 of the shielding cover 220 to prevent the transmission signal of the wire harness 300 from leaking out from the wiring via 2201 in subsequent use steps. S106. Assemble the housing 100 with the pre-assembled parts to obtain the GNSS antenna device 10.

[0028] In a preferred embodiment, such as Figure 6 , Figure 7 , Figure 9 and Figure 10 As shown, the soldering copper area 211 includes an inner soldering copper area 2111 and an outer soldering copper area 2112. A shielding cavity 210a is formed between the shielding cover 220 and the plate 210. The inner soldering copper area 2111 is located inside the shielding cavity 210a, and the outer soldering copper area 2112 is located outside the shielding cavity 210a. The shielding cavity 210a is connected to the wiring via 2201. The solder layer 400 is respectively provided on the inner soldering copper area 2111 and the outer soldering copper area 2112 to further seal the wiring via 2201, thereby further sealing the gap between the wire harness 300 and the shielding cover 220. A specific physical diagram is shown below. Figure 12 As shown. It can be understood that after assembling the wiring harness 300 and the board 210, solder is first applied to the inner copper area 2111, then the shielding cover 220 is placed on top, and finally solder is applied to the outer copper area 2112. This ensures the solder is applied both inside and outside the shielding cover 220, further sealing the gap between the shielding cover 220 and the wiring harness 300. When the GNSS antenna device 10 is operating, the signal generated by the wiring harness 300 can be effectively absorbed by the shielding cover 220, effectively reducing the probability of antenna self-oscillation. Specifically, Figure 11 This is a photograph of the shielding cover 220 without solder joint between it and the board. Figure 12 This is a photograph of the shielding cover 220 and the board body after soldering. Furthermore, the inner soldering copper area 2111 and the outer soldering copper area 2112 are spaced apart; that is, the inner soldering copper area 2111 and the outer soldering copper area 2112 are spaced apart by the shielding cover 220. For example, the distance between the inner soldering copper area 2111 and the outer soldering copper area 2112 is 0.8mm-1.5mm.

[0029] In another embodiment, the solder assembly process of the GNSS antenna device 10 includes some or all of the following steps: S201. Exposed copper treatment is performed on board 210 to form inner solder copper area 2111 and outer solder copper area 2112; S202, Assemble the board 210 and the wire harness 300, so that one end of the wire harness 300 is electrically connected to the board 210; S203. Perform a soldering step in the inner copper soldering area 2111 so that the solder is soldered into the inner copper soldering area 2111. S204. Install a shielding cover 220 so that the shielding cover 220 covers the part of the electrical connection between the wire harness 300 and the board 210. The wiring via 2201 of the shielding cover 220 is adjacent to the inner solder copper area 2111 and the outer solder copper area 2112, and the wire harness 300 passes through the wiring via 2201 of the shielding cover 220. S205. Perform a soldering step in the outer copper soldering area 2112 so that the solder is soldered into the outer copper soldering area 2112; S206. Let stand until the solder in the inner copper soldering area 2111 and the outer copper soldering area 2112 solidifies to form a solder layer 400 to make an antenna pre-assembly. The solder layer 400 in the inner copper soldering area 2111 and the outer copper soldering area 2112 together seal the wiring via 2201 of the shielding cover 220 to isolate the shielding cavity 210a and the receiving cavity 101. S207. Assemble the housing 100 with the antenna pre-assembly to obtain the GNSS antenna device 10.

[0030] like Figure 2 As shown, in one embodiment, the housing 100 has a baffle 110, which has a connection through hole 1101. The wire through hole 102, the connection through hole 1101, and the receiving cavity 101 are sequentially connected. The wire harness 300 is sequentially passed through the wire through hole 102, the connection through hole 1101, and the wiring through hole 2201, thereby restricting the movement of the wire harness 300 in the circumferential direction to maintain the connection stability between the wire harness 300 and the plate 210. Furthermore, combined with... Figure 5 , Figure 6 and Figure 9 As shown, there are two baffles 110, which are spaced apart to form a sealed cavity 1102 between them. The connection through hole 1101 includes a first connection through hole 11011 and a second connection through hole 11012. The first connection through hole 11011 is opened on one baffle 110, and the second connection through hole 11012 is opened on the other baffle 110. The wire hole 102, the first connection through hole 11011, the sealed cavity 1102, the second connection through hole 11012 and the accommodating cavity 101 are connected in sequence. The wire harness 300 is sequentially passed through the wire hole 102, the first connection through hole 11011, the second connection through hole 11012 and the wiring through hole 2201.

[0031] Furthermore, such as Figure 5 , Figure 6 and Figure 9 As shown, the GNSS antenna device 10 also includes a sealing ring 500, which is located inside the sealing cavity 1102. Both sides of the sealing ring 500 abut against two baffles 110. The wire harness 300 passes sequentially through the wire hole 102, the first connection through hole 11011, the sealing ring 500, the second connection through hole 11012, and the wiring through hole 2201. It can be understood that because the GNSS antenna device 10 has a sealing ring 500, and the sealing ring 500 abuts against the two baffles 110, when the wire harness 300 passes through the wire hole 102, the first connection through hole 11011, the sealing ring 500, the second connection through hole 11012, and the wiring through hole 2201 and is electrically connected to the plate 210, the sealing ring 500 prevents moisture or dust from entering the housing 100 through the gap between the wire harness 300 and the sealing ring 500, ensuring the normal operation of the GNSS antenna device 10.

[0032] like Figure 6 and Figure 8 As shown, in one embodiment, the housing 100 is provided with a plurality of guide blocks 120. The plurality of guide blocks 120 are located within the accommodating cavity 101 and are installed on the inner peripheral wall of the housing 100. The plurality of guide blocks 120 abut against the outer periphery of the plate 210. It can be understood that the GNSS circuit board 200 is usually installed in the housing 100. When installing the GNSS circuit board 200, since the guide blocks 120 are located on the inner peripheral wall of the housing 100, the guide blocks 120 are used to guide the GNSS circuit board 200 to be positioned in a designated position. At the same time, after the GNSS circuit board 200 is installed, one side of each guide block 120 abuts against one side of the plate 210, so that the plurality of guide blocks 120 abut against the outer periphery of the plate 210, thereby restricting the self-movement of the plate 210. This further effectively fixes the GNSS circuit board 200, prevents the GNSS circuit board 200 from moving within the housing 100, and ensures the normal operation of the GNSS antenna device 10. Furthermore, each guide block 120 has an inclined guide surface 121 on one side, which is disposed away from the side of the plate body 210. Thus, when installing the GNSS circuit board 200, the inclined guide surface 121 is used to guide the GNSS circuit board 200 to be installed in the correct position.

[0033] like Figure 2 or Figure 5 As shown, in one embodiment, the housing 100 is provided with a mounting post 130, which is located in the accommodating cavity 101. The plate 210 is provided with a limiting hole 2101, and the mounting post 130 passes through the limiting hole 2101. After the plate 210 is installed, the mounting post 130 is used to limit the self-movement of the plate 210, prevent the plate 210 from loosening in the housing 100, and ensure the normal operation of the GNSS antenna device 10.

[0034] Typically, when assembling the GNSS antenna device 10, a wire harness 300 and a sealing ring 500 are provided first. Then, the sealing ring 500 is placed into the sealing cavity 1102, and the wire harness 300 is passed through the wire hole 102, the first connection via 11011, and the second connection via 11012 in sequence. Subsequently, one end of the wire harness 300 is electrically connected to the board 210, and the shield 220 is covered, so that the wire harness 300 also passes through the wiring via 2201 of the shield 220 before the subsequent soldering steps are performed. However, during the soldering step, the housing 100 needs to be dragged throughout the process. Thus, the housing 100 must be moved to the soldering equipment for soldering. Furthermore, in subsequent testing, the GNSS circuit board 200 containing the housing 100 also needs to be moved to the signal testing device. This process makes non-critical components such as the housing 100 a burden and subject to interference from its weight. In the above situations, the wire harness 300 needs to be passed through the vias on the housing 100, and the housing 100 cannot be omitted in the soldering and signal testing steps, which increases the difficulty of assembly, soldering, and signal testing. In addition, when the housing 100 is damaged, the connection between the wire harness 300 and the board 210 needs to be disconnected to remove the wire harness 300, and then a new housing 100 needs to be replaced. Then, the reassembly, soldering, and signal testing steps need to be performed in sequence, which also increases the difficulty of replacing the housing 100.

[0035] To reduce the above operational difficulty, such as Figure 16 As shown, in one embodiment, each baffle 110 includes an upper baffle 111 and a lower baffle 112. The lower baffle 112 is disposed on the housing 100, and the upper baffle 111 is detachably mounted on the lower baffle 112. The upper baffle 111 has a first notch 111a, and the lower baffle 112 has a second notch 112a. Figure 5 and Figure 9As shown, a first connecting through hole 11011 is formed between the first notch 111a of the upper baffle 111 of the first baffle and the second notch 112a of the lower baffle 112 of the first baffle when the upper baffle 111 and the lower baffle 112 are connected. A second connecting through hole 11012 is formed between the first notch 111a of the upper baffle 111 of the other baffle and the second notch 112a of the lower baffle 112 of the other baffle when the upper baffle 111 and the lower baffle 112 are connected. It is understood that when assembling the GNSS antenna device 10, the wire harness 300 only needs to pass through the through hole of the sealing ring 500. Then, one end of the wire harness 300 is electrically connected to the board body 210 of the GNSS circuit board 200. Next, the shielding cover 220 is covered, so that the wire harness 300 passes through the wiring through hole 2201 of the shielding cover 220. Then, the subsequent steps of soldering and sealing the wiring through hole 2201 and signal testing are performed. After passing the signal test, the GNSS circuit board 200 containing the wire harness 300 and the sealing ring 500 can be installed in the housing 100. The side wall of the wire harness 300 first abuts against the second notch 112a of the two lower baffles 112, and the two sides of the sealing ring 500 abut against the two lower baffles 112 respectively. Then, the two upper baffles 111 are installed so that each upper baffle 111 is connected to the corresponding lower baffle 112. Specifically, the connection is completed by snap-fit, soldering or other means. Thus, during the soldering and signal testing steps, it is not necessary to use the housing 100. This means that the weight of the housing 100 does not interfere with the soldering and signal testing steps, eliminating the need to first pass the wire harness 300 through the vias in the housing 100. Furthermore, if the housing 100 is damaged, but the electrical connection between the wire harness 300 and the board 210 is undamaged, the two upper baffles 111 can be removed first, allowing the GNSS circuit board 200 containing the wire harness 300 and the sealing ring 500 to detach from the housing 100. Then, a new housing 100 can be installed, and the circuit board can be reassembled without disconnecting the wire harness 300 from the board 210, thus reducing the difficulty of replacing the housing 100.

[0036] Furthermore, after the GNSS circuit board 200 with the wire harness 300 and sealing ring 500 is installed, and each upper baffle 111 and lower baffle 112 are fastened or welded together, since the wire harness 300 is only electrically connected to the board body 210 and there is a lack of effective components to fix the wire harness 300, when a person picks up the wire harness 300, it will cause the housing 100 and GNSS circuit board 200 to move. Since the housing 100 and GNSS circuit board 200 have a certain weight, directly picking up the wire harness 300 will cause the connection between the wire harness 300 and the board body 210 to break.

[0037] Furthermore, combined Figure 5 , Figure 9 and Figure 16As shown, the outer wall of the wire harness 300 is press-fitted against the first notch 111a of the upper baffle 111 and the second notch 112a of the lower baffle 112, so that the upper baffle 111 and the lower baffle 112 together fix the wire harness 300. In this way, when a person picks up the wire harness 300, since the wire harness 300 is fixed by the baffle 110, the position where the wire harness 300 is electrically connected to the plate 210 will not be subjected to stress, and the electrical connection will not break.

[0038] Furthermore, such as Figure 16 As shown, each baffle 110 has a plurality of latching parts 111b protruding from its upper baffle 111 and a plurality of latching slots 112b opened from its lower baffle 112. Each latching part 111b is located in a corresponding latching slot 112b to enhance the connection stability between the upper baffle 111 and the lower baffle 112 and further fix the wire harness 300.

[0039] This disclosure also provides a vehicle satellite navigation system, including a GNSS antenna device 10 according to any embodiment, wherein the GNSS antenna device 10 is used to be installed on the vehicle body, specifically, the GNSS antenna device 10 can be installed on the front, rear, roof, rearview mirror, interior, etc. of the vehicle body.

[0040] Compared with the prior art, this disclosure has at least the following advantages: In this GNSS antenna device 10, after assembling the board 210 and the wiring harness 300, a shield 220 is used to cover the electrical connection points between the wiring harness 300 and the board 210. Then, a soldering process is used to seal the through-holes between the shield 220 and the wiring harness 300, specifically by filling the wiring through-holes 2201 with solder to seal their inner walls. The solder then spreads to the sidewalls of the shield 220, and after solidification, forms a solder layer 400. This solidified solder layer 400 seals the gap between the shield 220 and the wiring harness 300. Therefore, during subsequent operation of the GNSS antenna device 10, the signal transmitted by the wiring harness 300 is effectively absorbed by the shield 220, preventing signal leakage to the surface of the shield 220. This ensures proper impedance matching and significantly reduces the possibility of antenna self-oscillation, thereby guaranteeing stable reception of satellite signals.

[0041] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A GNSS antenna device, characterized in that, include: The housing has a receiving cavity and at least one wire through hole, and the receiving cavity is in communication with the wire through hole; A GNSS circuit board, at least a portion of the structure of which is located in the accommodating cavity, the GNSS circuit board including a board body and a shielding cover, the shielding cover being disposed on the GNSS circuit board, the shielding cover having at least one wiring via, the board body having at least one soldering copper area, and the soldering copper area being disposed adjacent to the wiring via; At least one wire harness, wherein the wire harness is sequentially passed through the wire hole and the wiring through hole, and one end of the wire harness is electrically connected to the plate body; At least one solder layer is provided in the corresponding solder copper area to seal the wiring via.

2. The GNSS antenna device according to claim 1, characterized in that, The soldering copper area includes an inner soldering copper area and an outer soldering copper area. A shielding cavity is formed between the shielding cover and the plate body. The inner soldering copper area is located inside the shielding cavity, and the outer soldering copper area is located outside the shielding cavity. The shielding cavity is connected to the wiring via. The solder layer is respectively provided in the inner soldering copper area and the outer soldering copper area to seal the wiring via.

3. The GNSS antenna device according to claim 2, characterized in that, The inner copper soldering area and the outer copper soldering area are spaced apart.

4. The GNSS antenna device according to claim 1, characterized in that, The housing has a baffle, and the baffle has a connection through hole. The wire hole, the connection through hole and the accommodating cavity are connected in sequence. The wire harness is sequentially passed through the wire hole, the connection through hole and the wiring through hole.

5. The GNSS antenna device according to claim 4, characterized in that, The number of baffles is two, and the two baffles are spaced apart to form a sealed cavity between the two baffles. The connection through hole includes a first connection through hole and a second connection through hole. The first connection through hole is opened in one of the baffles, and the second connection through hole is opened in the other baffle. The wire hole, the first connection through hole, the sealed cavity, the second connection through hole and the receiving cavity are sequentially connected. The wire harness is sequentially passed through the wire hole, the first connection through hole, the second connection through hole and the wiring through hole.

6. The GNSS antenna device according to claim 5, characterized in that, The GNSS antenna device also includes a sealing ring located inside the sealing cavity, with both sides of the sealing ring abutting against the two baffles respectively. The wire harness is sequentially passed through the wire hole, the first connecting through hole, the sealing ring, the second connecting through hole, and the wiring through hole.

7. The GNSS antenna device according to claim 1, characterized in that, The housing is provided with a plurality of guide blocks, which are located within the accommodating cavity and are installed on the inner peripheral wall of the housing, and abut against the outer periphery of the plate.

8. The GNSS antenna device according to claim 7, characterized in that, Each of the guide blocks has an inclined guide surface on one side, the inclined guide surface being disposed away from the side of the plate.

9. The GNSS antenna device according to claim 1, characterized in that, The housing is provided with a mounting post, which is located inside the accommodating cavity. The plate has a limiting hole, through which the mounting post passes.

10. A vehicle satellite navigation system, characterized in that, Includes the satellite communication antenna device as described in any one of claims 1 to 8.

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