Post assembly and vehicle

Abstract

The application provides a stand column assembly and a vehicle, the stand column assembly comprising an outer panel, a Bluetooth antenna, a circuit board and a protective shell; the protective shell is mounted on the inner side of the outer panel and is arranged opposite to the outer panel; the Bluetooth antenna and the circuit board are both located between the outer panel and the protective shell, the Bluetooth antenna is mounted on the surface of the outer panel facing the protective shell, the circuit board is mounted on the surface of the protective shell facing the outer panel, and the circuit board is electrically connected with the Bluetooth antenna.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, specifically to pillar assemblies and vehicles. Background Technology

[0002] Currently, Bluetooth digital keys are becoming increasingly common in vehicles, enabling keyless entry and start using Bluetooth-enabled smartphones or wearable Bluetooth devices. However, existing vehicle Bluetooth modules are susceptible to signal interference from surrounding sheet metal parts, resulting in weak Bluetooth signals and unstable Bluetooth functionality. Summary of the Invention

[0003] This application provides a pillar assembly and a vehicle to solve the problem that existing Bluetooth module signals are susceptible to interference.

[0004] In a first aspect, this application provides a pillar assembly for use in a vehicle, including an exterior trim panel, a Bluetooth antenna, a circuit board, and a protective shell; the protective shell is installed on the inner side of the exterior trim panel and is disposed opposite to the exterior trim panel;

[0005] The Bluetooth antenna and the circuit board are both located between the outer trim panel and the protective shell. The Bluetooth antenna is mounted on the surface of the outer trim panel facing the protective shell, and the circuit board is mounted on the surface of the protective shell facing the outer trim panel and is electrically connected to the Bluetooth antenna.

[0006] In one embodiment, the Bluetooth antenna includes an antenna coil, a first protective layer, and a second protective layer. The first protective layer is disposed on the surface of the outer trim panel facing the protective shell, the antenna coil is disposed on the surface of the first protective layer away from the outer trim panel, and the second protective layer is disposed on the surface of the antenna coil away from the first protective layer.

[0007] In one embodiment, the second protective layer completely covers the antenna coil.

[0008] In one embodiment, the Bluetooth antenna further includes a protective cover, which is installed between the outer trim panel and the protective shell and covers the antenna coil.

[0009] In one embodiment, the antenna coil includes a body and a conductive end, the conductive end being connected to one side of the body, the body being located between the first protective layer and the second protective layer, the conductive end protruding relative to the second protective layer and being electrically connected to the circuit board.

[0010] In one embodiment, both the first protective layer and the second protective layer are made of ink, and the antenna coil is made of conductive silver paste.

[0011] In one embodiment, the Bluetooth antenna further includes a connector located between the outer trim panel and the protective shell, and electrically connected between the Bluetooth antenna and the circuit board.

[0012] In one embodiment, the exterior panel is made of glass, or the exterior panel is made of glass-ceramic.

[0013] In one embodiment, the pillar assembly further includes a wiring harness, the protective housing has a through hole, one end of the wiring harness is electrically connected to the circuit board, and the other end of the wiring harness passes through the through hole and is electrically connected to the vehicle's control system.

[0014] In one embodiment, the column assembly further includes an insulating sealing plug, which is sleeved and connected to the periphery of the wire harness, and seals the through hole.

[0015] Secondly, embodiments of this application also provide a vehicle, including the aforementioned automobile pillar assembly and a vehicle body, wherein the automobile pillar assembly is connected between the upper and lower beams of the vehicle body.

[0016] In summary, this embodiment integrates the Bluetooth antenna into the pillar assembly, keeping it away from the front bumper, rear bumper, left fender, and right fender. This avoids interference and shielding of radio electromagnetic signals by the body panels, enhancing the signal gain, stability, and positioning accuracy of the Bluetooth antenna. Furthermore, it reduces the number of placement nodes for Bluetooth components, lowering usage and maintenance costs. Simultaneously, the circuit board is mounted and fixed within the protective housing, keeping it away from the metal panels of the pillar assembly, reducing signal interference from the metal panels and lowering the risk of electrostatic discharge during installation. Attached Figure Description

[0017] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a structural schematic diagram of the vehicle provided in this application;

[0019] Figure 2 This is a schematic diagram of the column assembly provided in the embodiments of this application;

[0020] Figure 3 for Figure 2 The diagram shows a cross-sectional view of the column assembly along the AA direction;

[0021] Figure 4 for Figure 2 The diagram shows the structure of the BLE antenna module mounted on the outer trim panel.

[0022] Figure 5 for Figure 2 A schematic diagram of the layered structure of the column assembly shown;

[0023] Figure 6 This is a simulation diagram of the Bluetooth antenna of the column assembly in Example 1;

[0024] Figure 7 This is a schematic diagram of the antenna gain value of the column assembly in Example 1;

[0025] Figure 8 The antenna horizontal coverage lobe diagram of the column assembly in Example 1;

[0026] Figure 9 The image shows the antenna gain lobe diagram of the pillar assembly in Example 1.

[0027] Figure 10 The diagram shows the antenna efficiency of the column assembly in Example 1. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0029] Please see Figure 1 , Figure 1 This is a structural schematic diagram of the vehicle 1000 provided in this application.

[0030] Vehicle 1000 includes a pillar assembly 100. The pillar assembly 100 is connected between the upper and lower beams of vehicle 1000, and the side of the pillar assembly 100 facing the outside of vehicle 1000 is usually equipped with decorative exterior parts or smart elements with practical functions. The pillar assembly 100 can be an A-pillar, B-pillar, or C-pillar of the vehicle body. This application embodiment uses the B-pillar of the vehicle body as an example for subsequent description, and the pillar assembly 100 of this application embodiment is equipped with a smart element with BLE (Bluetooth Low Energy) functionality, enabling functions such as keyless entry or keyless start of the vehicle.

[0031] The directional terms such as "inner" and "outer" mentioned in the description of the embodiments in this application are based on the appendix to the specification. Figure 1The description of the directions shown uses "inside" for the direction facing the interior of vehicle 1000 and "outside" for the direction facing the exterior of vehicle 1000, and does not constitute a limitation on vehicle 1000 in actual application scenarios.

[0032] Please also refer to Figure 2 and Figure 3 , Figure 2 This is a structural schematic diagram of the column assembly 100 provided in an embodiment of this application. Figure 3 for Figure 2 The diagram shows a cross-sectional view of the column assembly 100 along the AA direction.

[0033] The pillar assembly 100 includes an exterior panel 10, a Bluetooth antenna 20, a circuit board 30, and a protective housing 40. The Bluetooth antenna 20 is mounted and fixed to the side of the exterior panel 10 facing the interior of the vehicle 1000. The circuit board 30 is fixed inside the protective housing 40, which covers the Bluetooth antenna 20 and is fixedly connected to the exterior panel 10. The circuit board 30 is located between the protective housing 40 and the exterior panel 10 and is electrically connected to the Bluetooth antenna 20.

[0034] like Figure 3 The exterior trim panel 10 includes an outer surface 11 and an inner surface 12. The outer surface 11 and the inner surface 12 are arranged opposite to each other along the thickness direction of the exterior trim panel 10, with the outer surface 11 facing the outside of the vehicle 1000 and the inner surface 12 facing the inside of the vehicle 1000. In this embodiment, the exterior trim panel 10 is a glass exterior trim panel. The material used to prepare the exterior trim panel 10 can be glass, such as soda-lime glass, alkaline aluminosilicate glass, alkali borosilicate glass and / or alkaline aluminoborosilicate glass; it can also be glass ceramic, such as Li2O-Al2O3-SiO2 system (i.e., LAS system) glass ceramic, MgO-Al2O3-SiO2 system (i.e., MAS system) glass ceramic, or glass ceramic containing a crystalline phase, wherein the crystalline phase is any one or more of the following substances: aluminum-rich andalusite, spinel, α-quartz, β-quartz solid solution, lithium feldspar, lithium disilicate, β-spodumene, nepheline, and alumina. Alternatively, the glass outer panel can be chemically strengthened, thermally strengthened, mechanically strengthened, or a combination thereof. In other embodiments, the outer panel 10 may also be a plastic outer panel.

[0035] Please refer to the following: Figure 4 , Figure 4 for Figure 2 The diagram shows the structure of the Bluetooth antenna 20 mounted on the exterior panel 10.

[0036] The Bluetooth antenna 20 is mounted and fixed to the inner surface 12 of the outer trim panel 10. The Bluetooth antenna 20 includes a protective element 21, an antenna unit 22, a protective cover 27, and a connector 28. The antenna unit 22 is mounted and fixed to the protective element 21, and the protective element 21 is mounted and fixed to the inner surface 12 of the outer trim panel 10. The connector 28 is fixedly connected to the inner surface 12 of the outer trim panel 10 and spaced apart from the protective element 21, and is connected to the antenna unit 22. The protective cover 27 covers the antenna unit 22, part of the protective element 21, and part of the connector 28, and is fixedly connected to the inner surface 12 of the outer trim panel 10.

[0037] In this embodiment, the antenna element 22 is made of conductive silver paste. The antenna element 22 includes a body 23 and two conductive terminals 24. The body 23 is generally rectangular in shape, with a length greater than or equal to 30 mm and less than or equal to 50 mm, a width greater than or equal to 10 mm and less than or equal to 15 mm, and an area greater than or equal to 300 mm². 2 And less than or equal to 750mm 2 The area of ​​the body 23 is the product of its length and width. The length of the body 23 refers to its dimension along the length of the outer trim panel 10. In other embodiments, the shape of the body 23 can also be square, circular, or elliptical, etc., without specific limitations. Two conductive ends 24 are connected to one side of the body 23 and protrude from the outside of the body 23, with the two conductive ends 24 spaced apart from each other.

[0038] Please refer to the following: Figure 4 and Figure 5 , Figure 5 for Figure 2 The diagram shows the layer structure of the column assembly 100.

[0039] The protective element 21 protects the main body 23 from dust, moisture, and static electricity. In this embodiment, the protective element 21 has a layered structure and includes a first protective layer 25 and a second protective layer 26. The second protective layer 26 is stacked and fixed to the first protective layer 25 in the thickness direction of the column assembly 100. The first protective layer 25 is connected to the inner surface 12 of the outer trim panel 10, and the second protective layer 26 is located on the side of the first protective layer 25 away from the outer trim panel 10. The main body 23 is disposed and fixed between the first protective layer 25 and the second protective layer 26, with two conductive ends 24 protruding from the second protective layer 26.

[0040] The first protective layer 25 includes a first surface 251 and a second surface 252, which are disposed opposite to each other along the thickness direction of the first protective layer 25. The first surface 251 is disposed opposite to the inner surface 12, and the second surface 252 faces away from the inner surface 12. The second protective layer 26 protects the third surface 261 and the fourth surface 262, which are disposed opposite to each other along the thickness direction of the second protective layer 26. The third surface 261 is disposed opposite to the second surface 252, and the fourth surface 262 faces away from the second surface 252. The body 23 is disposed and fixed between the second surface 252 and the third surface 261. The first protective layer 25 and the second protective layer 26 are used to protect the body 23 from dust or oxidation, thereby preventing signal attenuation of the body 23.

[0041] like Figure 4 In this embodiment, the protective element 21 is an ink layer, meaning that both the first protective layer 25 and the second protective layer 26 are ink coatings. Preferably, the ink is black, and the black ink layer can conceal the structures and components located inside the outer trim panel 10, improving the aesthetics of the column assembly 100. The first protective layer 25 is connected to the inner surface 12 of the outer trim panel 10, and the first protective layer 25 covers the inner surface 12 to conceal the structures and components located inside the outer trim panel 10. The body 23 is connected to the second surface 252 of the first protective layer 25, and the second protective layer 26 is disposed on the side of the first protective layer 25 away from the outer trim panel 10, and completely covers the body 23 and part of the conductive end 24. It can be understood that the body 23 is disposed and fixed between the second surface 252 of the first protective layer 25 and the third surface 261 of the second protective layer 26. The two conductive ends 24 are fixedly connected to the second surface 252 of the first protective layer 25, and the conductive ends 24 protrude from the second protective layer 26 for electrical connection with the circuit board 30. It is understandable that the first protective layer 25 and the second protective layer 26 can protect the main body 23 from the effects of dust, water vapor and static electricity.

[0042] In this embodiment, the fabrication process for forming the protective element 21 and the antenna unit 22 on the outer panel 10 is as follows: First, a first protective layer 25 is formed on the inner surface 12 of the outer panel 10 through a first printing process (printing ink); then, the antenna unit 22 is formed on the second surface 252 of the first protective layer 25 through a second printing process (printing conductive silver paste); finally, a second protective layer 26 is formed on the second surface 252 of the first protective layer 25 through a third printing process (printing ink), and covers the body 23 and part of the conductive end 24. Because the ink layer can be sintered at high temperature after printing, the ink can form a firm connection with the glass outer panel after sintering, thereby fixing the Bluetooth antenna 20 to the inner surface 12 of the outer panel 10.

[0043] In one embodiment, the protective element 21 can also be an insulating film, that is, both the first protective layer 25 and the second protective layer 26 are insulating films. In this embodiment, the first protective layer 25 is connected to the inner surface 12 of the outer trim panel 10, and the second protective layer 26 covers the first protective layer 25 from the side of the first protective layer 25 away from the outer trim panel 10. The body 23 is coated between the first protective layer 25 and the second protective layer 26. Specifically, the third surface 261 of the second protective layer 26 is connected to the second surface 252 of the first protective layer 25, and the body 23 is fixed between the second surface 252 of the first protective layer 25 and the third surface 261 of the second protective layer 26. Two conductive ends 24 protrude from the first protective layer 25 and the second protective layer 26 for electrical connection with the circuit board 30. For example, when the outer trim panel 10 is a plastic trim panel, the protective element 21 can be integrally injection molded with the plastic trim panel, thereby being fixedly connected to the inner surface 12 of the plastic trim panel 10.

[0044] The connector 28 is made of conductive material and is used for conducting electricity and transmitting signals between the antenna unit 22 and the circuit board 30. The connector 28 is fixedly connected to the outer panel 10. The connector 28 can be directly adhered to the inner surface 12 of the outer panel 10, or it can be adhered to the second surface 252 of the first protective layer 25. The connector 28 is located on one side of the antenna unit 22 and is connected to two conductive terminals 24 respectively.

[0045] In this embodiment, the protective cover 27 is generally a rectangular dome. In this embodiment, the protective cover 27 is made of glass; in other embodiments, the protective cover 27 can also be formed by plastic injection molding or rubber extrusion molding. The protective cover 27 covers the antenna unit 22, part of the protective member 21, and part of the connector 28, and is fixedly connected to the second surface 252 of the first protective layer 25. The protective cover 27 and the outer trim panel 10 together form a waterproof, dustproof, and oxidation-resistant sealed cavity to protect the antenna unit 22 housed within the sealed cavity from moisture, dust, oxidation, and stress. In some embodiments, such as... Figure 9 As shown, a first adhesive element 29 is provided between the protective cover 27 and the second surface 252 of the first protective layer 25. The first adhesive element 29 can be a UV adhesive (ultraviolet curable adhesive) or foam double-sided tape, etc. The protective cover 27 is fixedly connected to the first protective layer 25 through the first adhesive element 29.

[0046] Continue reading Figure 3 and Figure 5A protective shell 40 is fitted over the Bluetooth antenna 20 and fixedly connected to the outer trim panel 10 to encapsulate the Bluetooth antenna 20. In this embodiment, the protective shell 40 is generally a rectangular cover and includes a bottom wall 41 and a side wall 42, with the side wall 42 surrounding the periphery of one side of the bottom wall 41. The protective shell 40 is fitted over the Bluetooth antenna 20. In the thickness direction of the column assembly 100, the bottom wall 41 is located on the side of the Bluetooth antenna 20 away from the outer trim panel 10, and is opposite to and spaced apart from the Bluetooth antenna 20. The side wall 42 surrounds the Bluetooth antenna 20 and is spaced apart from the Bluetooth antenna 20. The bottom wall 41, side wall 42, and outer trim panel 10 of the protective shell 40 together form a waterproof, dustproof, and antistatic sealed cavity to protect the Bluetooth antenna 20 housed within the sealed cavity. The protective shell also has a through hole 44, which is located on the bottom wall 41 of the protective shell 40 and penetrates the bottom wall 41 along its thickness direction.

[0047] In some embodiments, a second adhesive (not shown) is provided between the surface of the side wall 42 away from the bottom wall 41 and the inner surface 12 of the outer trim panel 10. The second adhesive can be PU glue (polyurethane resin) or foam double-sided tape, that is, the protective shell 40 can be directly fixed to the inner surface 12 of the outer trim panel 10 or the second surface 252 of the first protective layer 25 through the second adhesive.

[0048] The circuit board 30 is fixedly connected to the bottom wall 41 of the protective shell 40 facing the surface of the outer trim panel 10, and is located between the side walls 42 of the protective shell 40, spaced apart from the side walls 42. The circuit board 30 can be fixedly connected to the bottom wall 41 by screws, heat welding, or adhesive bonding. The circuit board 30 is spaced apart from the Bluetooth antenna 20 and the outer trim panel 10. The circuit board 30 is connected to the end of the connector 28 away from the conductive end 24, and the circuit board 30 forms an electrical and signal connection with the antenna unit 22 through the connector 28. The circuit board 30 can be plugged into the connector 28 via a wire or FPC cable to achieve electrical and signal connection with the antenna unit 22. The pillar assembly 100 also includes a wiring harness 31 and an insulating sealing plug. One end of the wiring harness 31 is electrically connected to the circuit board 30, and the other end passes through a through-hole 44 provided on the bottom wall 41 of the protective shell 40 to exit the protective shell 40, and connects to the vehicle 1000 control system for electrical and signal connection. The insulating sealing plug is fitted and connected to the periphery of the wiring harness 31. It is understood that after the wiring harness 31 of the circuit board 30 passes through the through hole 44 and exits the protective shell 40, the through hole 44 is sealed by an insulating sealing plug to ensure the sealing of the sealed cavity and the insulation between the wiring harnesses 31. In this embodiment, the circuit board 30 is housed in the sealed cavity formed by the protective shell 40 and the outer trim panel 10 to prevent it from being affected by moisture, dust, and static electricity. Moreover, the Bluetooth antenna 20 and the circuit board 30 are structurally separated; the Bluetooth antenna 20 is fixedly connected to the outer trim panel 10, while the circuit board 30 is fixedly connected inside the protective shell 40.

[0049] In this embodiment, the pillar assembly 100 further includes a base plate 50. The base plate 50 is generally thin and is fixedly connected to the outer trim panel 10. In this embodiment, a third adhesive member 51 is provided between the surface of the base plate 50 facing the outer trim panel 10 and the second surface 252 of the first protective layer 25. The third adhesive member 51 can be PU adhesive (polyurethane resin) or foam double-sided tape, etc. The base plate 50 is fixedly connected to the first protective layer 25 through the third adhesive member 51. In other embodiments, the base plate 50 can also be directly connected to the inner surface 12 of the outer trim panel 10 through the third adhesive member 51, and there is no specific limitation. The base plate 50 is disposed around the protective shell 40 and fixedly connected to the side wall 42. The side of the base plate 50 away from the protective shell 40 is fixedly connected to the body sheet metal. In this embodiment, the base plate 50 is fixedly connected to the side wall 42 of the protective shell 40 by self-tapping screws 52. In other embodiments, the base plate 50 can also be fixedly connected to the side wall 42 of the protective shell 40 by means of a clip. It is understood that the protective shell 40 is fixedly connected to the outer trim panel 10 via the substrate 50, and together they form a sealed cavity to protect the circuit board 30 and the Bluetooth antenna 20.

[0050] In this embodiment, the Bluetooth antenna 20 is integrated into the pillar assembly 100, keeping it away from the front bumper, rear bumper, left fender, and right fender. This avoids interference and shielding of radio electromagnetic signals by the body panels, enhancing the signal gain, stability, and positioning accuracy of the Bluetooth antenna 20. Furthermore, it reduces the number of Bluetooth component placement nodes, lowering usage and maintenance costs. Simultaneously, this embodiment employs a separate design for the circuit board 30 and the Bluetooth antenna 20. The antenna unit 22, installed in the protective component 21, can be electrically connected to circuit boards 30 of various structures or models. Therefore, the separate design of the circuit board 30 and Bluetooth antenna 20 allows for adaptation to pillar assemblies 100 with different spatial structures, resulting in high versatility. Moreover, the stacked arrangement of the circuit board 30 and Bluetooth antenna 20 in this embodiment avoids the drawbacks of an integrated Bluetooth module occupying excessive installation space, encroaching on the installation space of other components, and weakening the side panel strength of the pillar assembly 100. In addition, the circuit board 30 is installed and fixed inside the protective shell 40, which can keep it away from the metal sheet metal parts of the column assembly 100, reducing the signal interference of the sheet metal parts to the Bluetooth antenna 20 and reducing the risk of the Bluetooth antenna 20 being subjected to electrostatic discharge during installation.

[0051] Next, the antenna radiation performance obtained from simulations of multiple embodiments and multiple comparative examples of column assemblies 100 will be compared and analyzed.

[0052] Example 1

[0053] In Embodiment 1, the structure of the column assembly 100 is the same as that in the above embodiment. The antenna element 22 has a body 23 with a length of 30mm, a width of 10mm, and an area of ​​300mm².2 .

[0054] Example 2

[0055] In Embodiment 2, the structure of the column assembly 100 is the same as in Embodiment 1. The antenna element 22 has a body 23 with a length of 35 mm, a width of 11 mm, and an area of ​​385 mm². 2 .

[0056] Example 3

[0057] In Embodiment 3, the structure of the column assembly 100 is the same as that in Embodiment 1. The antenna unit 22 has a body 23 with a length of 40 mm, a width of 12 mm, and an area of ​​480 mm². 2 .

[0058] Example 4

[0059] In Embodiment 4, the structure of the column assembly 100 is the same as that in Embodiment 1. The antenna element 22 has a body 23 with a length of 45 mm, a width of 13 mm, and an area of ​​585 mm². 2 .

[0060] Comparative Example 1

[0061] In Comparative Example 1, the structure of the column assembly 100 is the same as that in Embodiment 1. The antenna element 22 has a body 23 with a length of 60 mm, a width of 10 mm, and an area of ​​600 mm². 2 .

[0062] Comparative Example 2

[0063] In Comparative Example 2, the structure of the column assembly 100 is the same as that in Example 1. The antenna element 22 has a body 23 with a length of 30 mm, a width of 20 mm, and an area of ​​600 mm². 2 .

[0064] Comparative Example 3

[0065] In Comparative Example 3, the structure of the column assembly 100 is the same as that in Example 1. The antenna element 22 has a body 23 with a length of 30 mm, a width of 30 mm, and an area of ​​600 mm². 2 .

[0066] Antenna simulations were performed on the column assemblies 100 of Examples 1-4 and Comparative Examples 1-3. The data in Table 1 are the performance simulation results.

[0067] Table 1: Simulation results of the column assemblies in the embodiments and comparative examples

[0068]

[0069] As shown in Table 1, from Embodiment 1 to Embodiment 4, the length of the main body gradually increases from 30mm to 45mm, and the width gradually increases from 10mm to 13mm. The horizontal beam angle outside the vehicle of the pillar assembly gradually decreases from 110 degrees to 90 degrees, while the horizontal beam angle inside the vehicle gradually increases from 80 degrees to 95 degrees. The antenna gain of the pillar assembly gradually decreases from 4.8dBi to 4dBi. Antenna gain refers to the ratio of the power density of the signal generated by the actual antenna module to that of the ideal radiating element at the same point in space, under the condition of equal input power. Antenna gain can quantitatively describe the concentration of antenna radiation. Under the same conditions, the higher the antenna gain (dBi), the wider the range of wireless signal propagation and the farther the propagation distance. It can be seen that the antenna gain of the pillar assembly in Embodiments 1-4 is between 4-5dBi, the horizontal beam angle outside the vehicle is between 90-110 degrees, and the horizontal beam angle inside the vehicle is between 80-100 degrees. Therefore, when the length of the body 23 is greater than or equal to 30mm and less than or equal to 50mm, and the width of the body 23 is greater than or equal to 10mm and less than or equal to 15mm, the antenna simulation performance of the column assembly is excellent.

[0070] Compared to Example 1, the length of the main body of Comparative Example 1 is increased to 60mm, the external horizontal beam angle is reduced to 88 degrees, the internal horizontal beam angle is increased to 100 degrees, and the antenna gain is reduced to 3.8dBi. The antenna performance of the pillar assembly of Comparative Example 1 is significantly reduced. Compared to Example 1, the width of the main body of Comparative Example 1 is increased to 20mm, the external horizontal beam angle is reduced to 85 degrees, the internal horizontal beam angle is increased to 105 degrees, and the antenna gain is reduced to 3.5dBi. The antenna performance of the pillar assembly of Comparative Example 2 is significantly reduced. Compared to Example 1, the width of the main body of Comparative Example 1 is further increased to 30mm, the external horizontal beam angle is further reduced to 80 degrees, the internal horizontal beam angle is increased to 110 degrees, and the antenna gain is reduced to 3.3dBi. The antenna performance of the pillar assembly of Comparative Example 3 is further reduced.

[0071] In summary, based on the comparative analysis of the antenna performance obtained from the simulation of the column assemblies in Examples 1-4 and Comparative Examples 1-3, the antenna performance of the column assembly is superior when the length of the body 23 is greater than or equal to 30mm and less than or equal to 50mm, and the width of the body 23 is greater than or equal to 10mm and less than or equal to 15mm. The simulation performance of the column assembly will be described below using Example 1 as an example.

[0072] Please see Figures 6 to 10 , Figure 6 This is a simulation diagram of the Bluetooth antenna of the column assembly 100 in Example 1. Figure 7This is a schematic diagram of the antenna gain value of the column assembly 100 in Example 1. Figure 8 The image shows the horizontal beam pattern of the antenna of the pillar assembly 100 in Example 1. Figure 9 The image shows the antenna gain lobe diagram of the pillar assembly 100 in Example 1. Figure 10 The diagram shows the antenna efficiency of the column assembly 100 in Example 1.

[0073] Please refer to the following: Figures 7 to 9 , Figure 8 This displays the Bluetooth signal coverage around the pillar assembly 100, specifically showing the beamwidth coverage in the horizontal plane from 0 degrees to 120 degrees, then to 240 degrees, and finally back to 0 degrees, as well as the beamwidth coverage in the vertical plane from 0 degrees to 120 degrees, then to 240 degrees, and finally back to 0 degrees. The Bluetooth antenna gain around the pillar assembly 100 is shown below. Figure 9 As shown. Figure 9 The antenna gain at the center of the circle is -20dBi, and the antenna gain at the outermost edge of the circle is 5dBi. The antenna gain of the column assembly 100 outside the vehicle is 4.8dBi. The width of the coverage plate above 4dBi on the horizontal plane outside the vehicle is 110 degrees, and the width of the coverage beam above 0dBi on the horizontal plane inside the vehicle is 80 degrees.

[0074] In summary Figures 6 to 9 As can be seen, in this embodiment of the application, the Bluetooth antenna 20 is integrated into the column assembly 100, which significantly improves the antenna gain of the Bluetooth antenna 20 and enhances the signal strength of the Bluetooth antenna 20.

[0075] In addition, such as Figure 10 As shown, within the frequency range of 2.42G to 2.50G, the antenna efficiency of the pillar assembly 100 provided in this application embodiment is greater than 98%, indicating strong Bluetooth signal stability. This demonstrates that integrating the Bluetooth antenna 20 into the pillar assembly 100, away from the front bumper, rear bumper, left fender, and right fender of the vehicle 1000, avoids interference and shielding of radio electromagnetic wave signals by the body sheet metal parts. Furthermore, the separate design of the Bluetooth antenna 20 and the circuit board, keeping the Bluetooth antenna 20 away from the metal sheet metal parts, reduces signal interference from the sheet metal parts to the Bluetooth antenna 20, which is beneficial to improving the stability and positioning accuracy of the Bluetooth signal.

[0076] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A pillar assembly for use in a vehicle, characterized in that, The device includes an outer trim panel, a Bluetooth antenna, a circuit board, and a protective shell; the protective shell is installed on the inner side of the outer trim panel and is disposed opposite to the outer trim panel; the Bluetooth antenna and the circuit board are both located between the outer trim panel and the protective shell; The Bluetooth antenna includes an antenna unit, a connector, a first protective layer, a second protective layer, and a protective cover. The first protective layer is disposed on the surface of the outer trim panel facing the protective shell. The antenna unit is disposed on the surface of the first protective layer facing away from the outer trim panel. The second protective layer is disposed on the surface of the antenna unit facing away from the first protective layer. The circuit board is mounted on the surface of the protective shell facing the outer trim panel, and the circuit board and the antenna unit are spaced apart. The connector is electrically connected between the antenna unit and the circuit board. The protective cover is installed between the outer trim panel and the protective shell and covers the antenna unit.

2. The column assembly according to claim 1, characterized in that, The second protective layer completely covers the antenna element.

3. The column assembly according to claim 1, characterized in that, The antenna unit includes a body and a conductive terminal. The conductive terminal is connected to one side of the body. The body is located between the first protective layer and the second protective layer. The conductive terminal protrudes relative to the second protective layer and is electrically connected to the circuit board.

4. The column assembly according to claim 3, characterized in that, The length of the body is greater than or equal to 30 mm and less than or equal to 50 mm, and the width of the body is greater than or equal to 10 mm and less than or equal to 15 mm.

5. The column assembly according to claim 1, characterized in that, Both the first protective layer and the second protective layer are insulating films, and the antenna unit is made of conductive silver paste and coated between the first protective layer and the second protective layer.

6. The column assembly according to claim 1, characterized in that, Both the first and second protective layers are made of ink, and the antenna element is made of conductive silver paste.

7. The column assembly according to any one of claims 1-6, characterized in that, The exterior panel is made of glass, or the exterior panel is made of glass-ceramic, or the exterior panel is made of plastic.

8. The column assembly according to claim 5, characterized in that, The exterior panel is made of plastic, and the first protective layer, the second protective layer, and the exterior panel are integrally injection molded.

9. The column assembly according to claim 1, characterized in that, The pillar assembly also includes a wiring harness. The protective housing has a through hole. One end of the wiring harness is electrically connected to the circuit board, and the other end of the wiring harness passes through the through hole and is electrically connected to the vehicle's control system.

10. The column assembly according to claim 9, characterized in that, The column assembly also includes an insulating sealing plug, which is sleeved and connected to the periphery of the wire harness and seals the through hole.

11. A vehicle, characterized in that, Includes the pillar assembly and body as described in any one of claims 1-10, wherein the pillar assembly is connected between the upper and lower beams of the body.

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