Pillar assembly and vehicle

Abstract

A pillar assembly and a vehicle having same. The pillar assembly (100) comprises an outer trim panel (10), a Bluetooth antenna (20), a circuit board (30) and a protective shell (40), wherein the protective shell (40) is mounted on an inner side of the outer trim panel (10), and is arranged opposite the outer trim panel (10); and the Bluetooth antenna (20) and the circuit board (30) are both located between the outer trim panel (10) and the protective shell (40), the Bluetooth antenna (20) is mounted on the surface of the outer trim panel (10) facing the protective shell (40), and the circuit board (30) is mounted on the surface of the protective shell (40) facing the outer trim panel (10) and is electrically connected to the Bluetooth antenna (20). The pillar assembly and the vehicle allows the Bluetooth antenna to be integrally formed inside the pillar assembly, so as to prevent the vehicle sheet metal from interfering or shielding of radio electromagnetic wave signals, and reduce the risk of static electricity shock to the Bluetooth antenna during installation.

Description

Pillar assembly and vehicle

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on August 8, 2023, with application number 2023109929987 and application name “Pillar Assembly and Vehicle,” the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present application relates to the field of vehicle technology, and in particular to a pillar assembly and a vehicle. Background Art

[0003] Bluetooth digital keys are becoming increasingly common in vehicles on the market. These keys enable keyless entry and start via a Bluetooth-enabled mobile phone or wearable device. However, Bluetooth modules in existing vehicles are susceptible to signal shielding from surrounding sheet metal, resulting in weak Bluetooth signals and unstable Bluetooth functionality.

[0004] Summary of the Invention

[0005] The present application provides a pillar assembly and a vehicle to solve the problem that existing Bluetooth module signals are susceptible to interference.

[0006] In a first aspect, the present application provides a pillar assembly for use in a vehicle, comprising an exterior panel, a Bluetooth antenna, a circuit board, and a protective shell; the protective shell is mounted on the inner side of the exterior panel and is arranged opposite to the exterior panel;

[0007] The Bluetooth antenna and the circuit board are both located between the exterior panel and the protective shell. The Bluetooth antenna is installed on the surface of the exterior panel facing the protective shell. The circuit board is installed on the surface of the protective shell facing the exterior panel and is electrically connected to the Bluetooth antenna.

[0008] In one embodiment, the Bluetooth antenna includes an antenna coil, a first protective layer and a second protective layer. The first protective layer is arranged on the surface of the exterior panel facing the protective shell, the antenna coil is arranged on the surface of the first protective layer away from the exterior panel, and the second protective layer is arranged on the surface of the antenna coil away from the first protective layer.

[0009] In one embodiment, the second protective layer completely covers the antenna coil.

[0010] In one embodiment, the Bluetooth antenna further includes a protective cover, which is installed between the exterior panel and the protective shell and covers the antenna coil.

[0011] In one embodiment, the antenna coil includes a body and a conductive end, the conductive end is connected to one side of the body, the body is located between the first protective layer and the second protective layer, the conductive end protrudes relative to the second protective layer and is electrically connected to the circuit board.

[0012] In one embodiment, the first protective layer and the second protective layer are both made of ink, and the antenna coil is made of conductive silver paste.

[0013] In one embodiment, the Bluetooth antenna further includes a connector, which is located between the exterior panel and the protective shell and is electrically connected between the Bluetooth antenna and the circuit board.

[0014] In one embodiment, the exterior panel is made of glass, or the exterior panel is made of glass ceramics.

[0015] In one embodiment, the column assembly further includes a wiring harness, the protective shell is provided with a wire 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 wire through hole and is electrically connected to the control system of the vehicle.

[0016] In one embodiment, the column assembly further includes an insulating sealing plug, which is sleeved on and connected to the periphery of the wiring harness, and the insulating sealing plug seals the wire hole.

[0017] In a second aspect, an embodiment of the present application further provides a vehicle, comprising the aforementioned automobile pillar assembly and a vehicle body, wherein the automobile pillar assembly is connected between upper and lower beams of the vehicle body.

[0018] In summary, the present embodiment integrates the Bluetooth antenna into the pillar assembly, positioning it away from the front and rear bumpers, as well as the left and right fenders. This prevents interference and shielding of radio electromagnetic signals by the vehicle's sheet metal components, enhancing the Bluetooth antenna's signal gain, stability, and positioning accuracy. Furthermore, it reduces the number of Bluetooth component layout nodes, lowering usage and maintenance costs. Furthermore, the circuit board is installed and secured within the protective housing, away from the sheet metal components of the pillar assembly. This reduces signal interference from the sheet metal components on the Bluetooth antenna and reduces the risk of static electricity shock to the Bluetooth antenna during installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for use in the implementation. Obviously, the drawings described below are only some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained from these drawings without any creative work.

[0020] FIG1 is a schematic structural diagram of a vehicle provided by the present application;

[0021] FIG2 is a schematic structural diagram of a column assembly provided in an embodiment of the present application;

[0022] FIG3 is a schematic cross-sectional view of the column assembly shown in FIG2 along the AA direction;

[0023] FIG4 is a schematic structural diagram of the BLE antenna module shown in FIG2 installed on an exterior panel;

[0024] FIG5 is a schematic diagram of the layer structure of the column assembly shown in FIG2 ;

[0025] FIG6 is a schematic diagram of a simulation of a Bluetooth antenna of a pillar assembly according to Example 1;

[0026] FIG7 is a schematic diagram of antenna gain values ​​of the column assembly of Example 1;

[0027] FIG8 is a horizontal coverage lobe diagram of the antenna of the column assembly of Example 1;

[0028] FIG9 is a lobe diagram of the antenna gain value of the column assembly of Example 1;

[0029] FIG10 is a diagram showing the antenna efficiency of the column assembly of Example 1. FIG. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0031] Please refer to FIG1 , which is a schematic structural diagram of a vehicle 1000 provided in this application.

[0032] Vehicle 1000 includes a pillar assembly 100. Pillar assembly 100 is connected between the upper and lower beams of vehicle 1000, and the side of pillar assembly 100 facing the exterior of vehicle 1000 is typically equipped with decorative exterior trim or smart components with practical functions. Pillar assembly 100 can be an A-pillar, B-pillar, or C-pillar. This embodiment of the present application uses a B-pillar as an example for subsequent description. Pillar assembly 100 in this embodiment of the present application is equipped with a smart component with BLE (Bluetooth Low Energy) functionality, enabling keyless entry and keyless start functions for the vehicle.

[0033] The directional terms such as "inside" and "outside" mentioned in the description of the embodiments of the present application are described based on the directions shown in Figure 1 of the specification, with the direction toward the inside of the vehicle 1000 being considered "inside" and the direction toward the outside of the vehicle 1000 being considered "outside", and do not constitute a limitation on the actual application scenario of the vehicle 1000.

[0034] Please refer to Figures 2 and 3 at the same time. Figure 2 is a structural schematic diagram of the column assembly 100 provided in an embodiment of the present application, and Figure 3 is a cross-sectional schematic diagram of the column assembly 100 shown in Figure 2 along the AA direction.

[0035] 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 secured within 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.

[0036] As shown in 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 each other along the thickness direction of the exterior trim panel 10, with the outer surface 11 facing the exterior of the vehicle 1000 and the inner surface 12 facing the interior of the vehicle 1000. In this embodiment, the exterior trim panel 10 is a glass exterior trim panel. The exterior trim panel 10 can be made of glass, such as soda-lime glass, alkali aluminosilicate glass, alkali-containing borosilicate glass, and / or alkali aluminoborosilicate glass; or 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: mullite, spinel, α-quartz, β-quartz solid solution, petalite, lithium disilicate, β-spodumene, nepheline, and alumina. In addition, the glass exterior panel may be chemically strengthened, thermally strengthened, mechanically strengthened, or a combination thereof. In other embodiments, the exterior panel 10 may also be a plastic exterior panel.

[0037] Please refer to FIG. 4 , which is a structural diagram of the Bluetooth antenna 20 shown in FIG. 2 installed on the exterior panel 10 .

[0038] The Bluetooth antenna 20 is mounted and fixed to the inner surface 12 of the exterior panel 10. The Bluetooth antenna 20 includes a protective member 21, an antenna unit 22, a protective cover 27, and a connector 28. The antenna unit 22 is mounted and fixed to the protective member 21, which is in turn mounted and fixed to the inner surface 12 of the exterior panel 10. The connector 28 is fixedly connected to the inner surface 12 of the exterior panel 10 and spaced apart from the protective member 21. The connector 28 is connected to the antenna unit 22. The protective cover 27 covers the antenna unit 22, a portion of the protective member 21, and a portion of the connector 28, and is fixedly connected to the inner surface 12 of the exterior panel 10.

[0039] In this embodiment, the antenna unit 22 is made of conductive silver paste. The antenna unit 22 includes a body 23 and two conductive ends 24. The body 23 is roughly rectangular, 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 mm. 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 length along the length of the exterior panel 10. In other embodiments, the shape of the body 23 can also be square, circular, or oval, without specific limitation. Two conductive terminals 24 are connected to one side of the body 23 and protrude from the exterior of the body 23. The two conductive terminals 24 are spaced apart from each other.

[0040] Please refer to FIG. 4 and FIG. 5 together. FIG. 5 is a schematic diagram of the layer structure of the column assembly 100 shown in FIG. 2 .

[0041] The protective member 21 is used to protect the main body 23 from dust, moisture, and static electricity. In this embodiment, the protective member 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 with the first protective layer 25 in the thickness direction of the pillar assembly 100. The first protective layer 25 is connected to the inner surface 12 of the exterior panel 10, and the second protective layer 26 is arranged on the side of the first protective layer 25 away from the exterior panel 10. The main body 23 is arranged and fixed between the first protective layer 25 and the second protective layer 26, and the two conductive ends 24 protrude from the second protective layer 26.

[0042] The first protective layer 25 includes a first surface 251 and a second surface 252. The first surface 251 and the second surface 252 are disposed opposite each other along the thickness direction of the first protective layer 25. The first surface 251 is disposed opposite the inner surface 12, and the second surface 252 faces away from the inner surface 12. The second protective layer 26 protects a third surface 261 and a fourth surface 262. The third surface 261 and the fourth surface 262 are disposed opposite each other along the thickness direction of the second protective layer 26. The third surface 261 is disposed opposite the second surface 252, and the fourth surface 262 faces away from the second surface 252. The main body 23 is disposed and fixed between the second surface 252 and the third surface 261. The first and second protective layers 25 and 26 protect the main body 23 from dust, dirt, and oxidation, thereby preventing signal attenuation in the main body 23.

[0043] As shown in Figure 4 , in this embodiment, the protective member 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. The black ink layer conceals the structures and components located inside the exterior panel 10, enhancing the aesthetics of the pillar assembly 100. The first protective layer 25 is attached to the inner surface 12 of the exterior panel 10 and covers the inner surface 12 to conceal the structures and components located inside the exterior panel 10. The body 23 is attached to the second surface 252 of the first protective layer 25. The second protective layer 26 is disposed on the side of the first protective layer 25 facing away from the exterior panel 10, completely covering the body 23 and a portion of the conductive terminals 24. It is 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 terminals 24 are fixedly attached to the second surface 252 of the first protective layer 25 and protrude from the second protective layer 26 for electrical connection to the circuit board 30. It can be understood that the first protective layer 25 and the second protective layer 26 can protect the body 23 from dust, moisture and static electricity.

[0044] In this embodiment, the manufacturing process for forming the protective member 21 and antenna unit 22 on the exterior panel 10 is as follows: First, a first protective layer 25 is formed on the inner surface 12 of the exterior 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); and 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), covering the body 23 and a portion of the conductive terminal 24. Because the ink layer can be sintered at a high temperature after printing, the sintered ink forms a secure connection with the glass exterior panel, thereby securing the Bluetooth antenna 20 to the inner surface 12 of the exterior panel 10.

[0045] In one embodiment, the protective member 21 can also be an insulating film, that is, the first protective layer 25 and the second protective layer 26 are both insulating films. In this embodiment, the first protective layer 25 is connected to the inner surface 12 of the exterior panel 10, the second protective layer 26 covers the first protective layer 25 from the side of the first protective layer 25 facing away from the exterior panel 10, and 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. The two conductive ends 24 protrude from the first protective layer 25 and the second protective layer 26 for electrical connection to the circuit board 30. For example, when the exterior panel 10 is a plastic exterior panel, the protective member 21 can be integrally injection molded with the plastic exterior panel, thereby being fixedly connected to the inner surface 12 of the plastic exterior panel 10.

[0046] Connector 28 is made of a conductive material and is used to conduct electricity and transmit signals between antenna unit 22 and circuit board 30. Connector 28 is fixedly connected to exterior panel 10. Connector 28 can be directly bonded to inner surface 12 of exterior panel 10 or bonded to second surface 252 of first protective layer 25. Connector 28 is located on one side of antenna unit 22 and is connected to each of the two conductive terminals 24.

[0047] In this embodiment, the protective cover 27 is a roughly rectangular cover. 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. The protective cover 27 is provided on the antenna unit 22, part of the protective member 21 and part of the connecting member 28, and is fixedly connected to the second surface 252 of the first protective layer 25. The protective cover 27 and the exterior panel 10 together form a sealed cavity that is waterproof, dustproof and anti-oxidation to protect the antenna unit 22 housed in the sealed cavity from moisture, dust, oxidation and stress pulling. In some embodiments, as shown in Figure 9, a first adhesive 29 is provided between the protective cover 27 and the second surface 252 of the first protective layer 25. The first adhesive 29 can be a tape such as UV glue (ultraviolet light curing glue) or foam double-sided tape. The protective cover 27 is fixedly connected to the first protective layer 25 via the first adhesive 29.

[0048] Continuing with Figures 3 and 5, the protective shell 40 is positioned over the Bluetooth antenna 20 and is fixedly connected to the exterior panel 10 to encapsulate the Bluetooth antenna 20. In this embodiment, the protective shell 40 is a generally rectangular shell and includes a bottom wall 41 and side walls 42. The side wall 42 is disposed around the periphery of one side of the bottom wall 41. The protective shell 40 is positioned over the Bluetooth antenna 20. In the thickness direction of the pillar assembly 100, the bottom wall 41 is located on the side of the Bluetooth antenna 20 away from the exterior panel 10 and is opposite 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 walls 42 of the protective shell 40, and the exterior panel 10 together form a sealed cavity that is waterproof, dustproof, and anti-static to protect the Bluetooth antenna 20 housed therein. The protective shell also has a wire hole 44, which is disposed in the bottom wall 41 of the protective shell 40 and extends through the bottom wall 41 along its thickness.

[0049] In some embodiments, a second adhesive member (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 exterior panel 10. The second adhesive member 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 exterior panel 10 or the second surface 252 of the first protective layer 25 through the second adhesive member.

[0050] The circuit board 30 is fixedly connected to the bottom wall 41 of the protective shell 40, facing the exterior panel 10. It is located between the side walls 42 of the protective shell 40 and spaced apart from the side walls 42. The circuit board 30 can be fixed to the bottom wall 41 by screws, heat fusion welding, or adhesive bonding. The circuit board 30 is spaced apart from the Bluetooth antenna 20 and the exterior panel 10. The circuit board 30 is connected to the end of the connector 28 away from the conductive end 24. The circuit board 30 is electrically and signal-connected to the antenna unit 22 through the connector 28. The circuit board 30 can be plugged into the connector 28 using wires or flexible printed circuit boards (FPC) to achieve electrical and signal connections 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. The other end of the wiring harness 31 passes through a wire hole 44 provided in the bottom wall 41 of the protective shell 40, exiting the protective shell 40 for electrical and signal connections to the vehicle 1000 control system. The insulating sealing plug is fitted around and connected to the periphery of the wiring harness 31. It will be appreciated that after the wiring harness 31 of the circuit board 30 passes through the protective shell 40 through the wire hole 44, the wire hole 44 is sealed with an insulating plug to ensure the sealing of the sealed cavity and the insulation between the wiring harness 31. In this embodiment, the circuit board 30 is housed in the sealed cavity formed by the protective shell 40 and the exterior panel 10 to protect it from moisture, dust, and static electricity. Furthermore, the Bluetooth antenna 20 and the circuit board 30 are structurally separated from each other, with the Bluetooth antenna 20 fixedly connected to the exterior panel 10, while the circuit board 30 is fixedly connected to the protective shell 40.

[0051] In this embodiment, the pillar assembly 100 also includes a substrate 50. The substrate 50 is generally in the shape of a thin plate and is fixedly connected to the exterior panel 10. In this embodiment, a third adhesive member 51 is provided between the surface of the substrate 50 facing the exterior panel 10 and the second surface 252 of the first protective layer 25. The third adhesive member 51 can be a PU adhesive (polyurethane resin) or a foam double-sided tape. The substrate 50 is fixedly connected to the first protective layer 25 via the third adhesive member 51. In other embodiments, the substrate 50 can also be directly connected to the inner surface 12 of the exterior panel 10 via the third adhesive member 51. The specific embodiment is not limited thereto. The substrate 50 is arranged around the protective shell 40 and is fixedly connected to the side wall 42. The side of the substrate 50 away from the protective shell 40 is fixedly connected to the body sheet metal. In this embodiment, the substrate 50 is fixedly connected to the side wall 42 of the protective shell 40 by self-tapping screws 52. In other embodiments, the substrate 50 can also be fixedly connected to the side wall 42 of the protective shell 40 by a claw engagement. It can be understood that the protective shell 40 is fixedly connected to the exterior panel 10 through the base plate 50 and together forms a sealed cavity to protect the circuit board 30 and the Bluetooth antenna 20 .

[0052] This embodiment of the present application integrates the Bluetooth antenna 20 into the interior of the pillar assembly 100, positioning it away from the front and rear bumpers, as well as the left and right fenders. This prevents interference and shielding of radio electromagnetic signals by the vehicle body sheet metal, enhances the signal gain, stability, and positioning accuracy of the Bluetooth antenna 20, and reduces the number of Bluetooth component layout nodes, thereby lowering operating and maintenance costs. Furthermore, this embodiment utilizes a separate design for the circuit board 30 and Bluetooth antenna 20. The antenna unit 22 mounted in the protective member 21 can be electrically connected to a variety of circuit board 30 structures or models. Therefore, the separate design of the circuit board 30 and Bluetooth antenna 20 can adapt to pillar assemblies 100 with different spatial structures, providing high versatility. Furthermore, 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, crowding out installation space for other components, and weakening the sheet metal strength of the pillar assembly 100. In addition, the circuit board 30 is installed and fixed in the protective shell 40, away from the metal sheet metal parts of the column assembly 100, reducing the signal interference of the sheet metal parts on the Bluetooth antenna 20 and reducing the risk of the Bluetooth antenna 20 being hit by static electricity during installation.

[0053] Next, the antenna radiation performances obtained by simulating the pillar assemblies 100 of the multiple embodiments and multiple comparative examples are compared and analyzed.

[0054] Example 1

[0055] In embodiment 1, the structure of the column assembly 100 is the same as that of the above embodiment. The length of the main body 23 of the antenna unit 22 is 30mm, the width is 10mm, and the area is 300mm. 2 .

[0056] Example 2

[0057] In Example 2, the structure of the column assembly 100 is the same as that of Example 1. The length of the body 23 of the antenna unit 22 is 35 mm, the width is 11 mm, and the area is 385 mm. 2 .

[0058] Example 3

[0059] In Example 3, the structure of the column assembly 100 is the same as that of Example 1. The length of the main body 23 of the antenna unit 22 is 40 mm, the width is 12 mm, and the area is 480 mm. 2 .

[0060] Example 4

[0061] In Example 4, the structure of the column assembly 100 is the same as that of Example 1. The length of the main body 23 of the antenna unit 22 is 45 mm, the width is 13 mm, and the area is 585 mm. 2 .

[0062] Comparative Example 1

[0063] In comparative example 1, the structure of the column assembly 100 is the same as that of embodiment 1. The length dimension of the main body 23 of the antenna unit 22 is 60 mm, the width dimension is 10 mm, and the area is 600 mm. 2 .

[0064] Comparative Example 2

[0065] In comparative example 2, the structure of the column assembly 100 is the same as that of embodiment 1. The length dimension of the body 23 of the antenna unit 22 is 30 mm, the width dimension is 20 mm, and the area is 600 mm. 2 .

[0066] Comparative Example 3

[0067] In comparative example 3, the structure of the column assembly 100 is the same as that of embodiment 1. The length and width of the main body 23 of the antenna unit 22 are 30 mm and 30 mm, respectively, and the area is 600 mm. 2 .

[0068] Antenna simulation was performed on the pillar assemblies 100 of Examples 1 to 4 and Comparative Examples 1 to 3. The data in Table 1 are the performance simulation results.

[0069] Table 1: Simulation results of pillar assemblies of embodiment and comparative example

[0070] As can be seen from Table 1, from Example 1 to Example 4, the length of the body gradually increases from 30mm to 45mm, the width of the body also gradually increases from 10mm to 13mm, the horizontal beam angle of the pillar assembly outside the vehicle gradually decreases from 110 degrees to 90 degrees, the horizontal beam angle inside the vehicle gradually increases from 80 degrees to 95 degrees, and the antenna gain of the pillar assembly gradually decreases from 4.8dBi to 4dBi. Among them, antenna gain refers to the ratio of the power density of the signal generated by the actual antenna module and the ideal radiating unit at the same point in space under the condition of equal input power. Antenna gain can quantitatively describe the degree of concentration of antenna radiation. Under the same conditions, the higher the antenna gain (dBi), the wider the range of wireless signal propagation and the longer the propagation distance. As can be seen from the above, the antenna gain of the pillar assemblies of Examples 1-4 are all between 4-5dBi, the horizontal beam angle outside the vehicle is all between 90-110 degrees, and the horizontal beam angle inside the vehicle is all between 80-100 degrees. Therefore, when the length of the main body 23 is greater than or equal to 30 mm and less than or equal to 50 mm, and the width of the main body 23 is greater than or equal to 10 mm and less than or equal to 15 mm, the antenna simulation performance of the column assembly is excellent.

[0071] Compared to Example 1, the body length of Comparative Example 1 was increased to 60 mm, the horizontal beam angle outside the vehicle was reduced to 88 degrees, the horizontal beam angle inside the vehicle was increased to 100 degrees, and the antenna gain was reduced to 3.8 dBi. The antenna performance of the pillar assembly of Comparative Example 1 was significantly reduced. Compared to Example 1, the body width of Comparative Example 1 was increased to 20 mm, the horizontal beam angle outside the vehicle was reduced to 85 degrees, the horizontal beam angle inside the vehicle was increased to 105 degrees, and the antenna gain was reduced to 3.5 dBi. The antenna performance of the pillar assembly of Comparative Example 2 was significantly reduced. Compared to Example 1, the body width of Comparative Example 1 was further increased to 30 mm, the horizontal beam angle outside the vehicle was further reduced to 80 degrees, the horizontal beam angle inside the vehicle was increased to 110 degrees, and the antenna gain was reduced to 3.3 dBi. The antenna performance of the pillar assembly of Comparative Example 3 was further reduced.

[0072] In summary, a comparative analysis of the antenna performance obtained from simulations of the pillar assemblies of Examples 1-4 and Comparative Examples 1-3 shows that when the length of the body 23 is greater than or equal to 30 mm and less than or equal to 50 mm, and the width of the body 23 is greater than or equal to 10 mm and less than or equal to 15 mm, the pillar assembly exhibits superior antenna performance. The following describes the simulation performance of the pillar assembly using Example 1 as an example.

[0073] Please refer to Figures 6 to 10, Figure 6 is a schematic diagram of the Bluetooth antenna simulation of the column assembly 100 of Example 1, Figure 7 is a schematic diagram of the antenna gain value of the column assembly 100 of Example 1, Figure 8 is a horizontal plane coverage lobe diagram of the antenna of the column assembly 100 of Example 1, Figure 9 is a lobe diagram of the antenna gain value of the column assembly 100 of Example 1, and Figure 10 is an antenna efficiency diagram of the column assembly 100 of Example 1.

[0074] Please refer to Figures 7 to 9. Figure 8 shows the Bluetooth signal coverage around the pillar assembly 100. Specifically, it shows the lobe coverage from 0 degrees to 120 degrees, then to 240 degrees, and finally to 0 degrees in the horizontal plane, and the lobe coverage from 0 degrees to 120 degrees, then to 240 degrees, and finally to 0 degrees in the vertical plane. The Bluetooth antenna gain around the pillar assembly 100 is shown in Figure 9. The antenna gain at the center of the circle in Figure 9 is -20dBi, and the antenna gain at the outermost part of the circle is 5dBi. The antenna gain of the pillar assembly 100 outside the vehicle is 4.8dBi. The width of the coverage sheet above 4dBi on the horizontal plane outside the vehicle is 110 degrees, and the coverage lobe width above 0dBi on the horizontal plane inside the vehicle is 80 degrees.

[0075] From FIG. 6 to FIG. 9 , it can be seen that in the embodiment of the present application, the Bluetooth antenna 20 is integrated into the pillar assembly 100 , which significantly improves the antenna gain of the Bluetooth antenna 20 and enhances the signal strength of the Bluetooth antenna 20 .

[0076] In addition, as shown in Figure 10, within the frequency range of 2.42G to 2.50G, the antenna efficiency value of the pillar assembly 100 provided in the embodiment of the present application is greater than 98%, and the stability of the Bluetooth signal is relatively strong, indicating that the Bluetooth antenna 20 is integrated into the pillar assembly 100, away from the front bumper, rear bumper, left fender, and right fender of the vehicle 1000, thereby avoiding interference and shielding of radio electromagnetic wave signals by body sheet metal parts. In addition, the Bluetooth antenna 20 is designed to be separated from the circuit board, and the Bluetooth antenna 20 is away from the metal sheet metal parts, which reduces the signal interference of the sheet metal parts on the Bluetooth antenna 20, and is conducive to improving the stability and positioning accuracy of the Bluetooth signal.

[0077] The above is a detailed introduction to the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for those skilled in the art, according to the idea of ​​the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A column assembly, used in a vehicle, characterized in that: It includes an exterior panel, a Bluetooth antenna, a circuit board and a protective shell; the protective shell is installed on the inner side of the exterior panel and is arranged opposite to the exterior panel; The Bluetooth antenna and the circuit board are both located between the exterior panel and the protective shell. The Bluetooth antenna is installed on the surface of the exterior panel facing the protective shell. The circuit board is installed on the surface of the protective shell facing the exterior panel and is electrically connected to the Bluetooth antenna.

2. The column assembly according to claim 1, characterized in that: The Bluetooth antenna includes an antenna coil, a first protective layer and a second protective layer. The first protective layer is arranged on the surface of the exterior panel facing the protective shell, the antenna coil is arranged on the surface of the first protective layer away from the exterior panel, and the second protective layer is arranged on the surface of the antenna coil away from the first protective layer.

3. The column assembly according to claim 2, characterized in that: The second protective layer completely covers the antenna coil.

4. The column assembly according to claim 2, characterized in that: The Bluetooth antenna also includes a protective cover, which is installed between the exterior panel and the protective shell and covers the antenna coil.

5. The column assembly according to claim 2, characterized in that: The antenna coil includes a body and a conductive end, wherein the conductive end is connected to one side of the body, the body is located between the first protective layer and the second protective layer, the conductive end protrudes relative to the second protective layer and is electrically connected to the circuit board.

6. The column assembly according to claim 5, characterized in that: The length dimension of the main body is greater than or equal to 30 mm and less than or equal to 50 mm, and the width dimension of the main body is greater than or equal to 10 mm and less than or equal to 15 mm.

7. The column assembly according to claim 1, characterized in that: The Bluetooth antenna also includes a connector, which is located between the exterior panel and the protective shell and is electrically connected between the Bluetooth antenna and the circuit board.

8. The column assembly according to claim 2, characterized in that: The first protective layer and the second protective layer are both insulating films, and the antenna coil is made of conductive silver paste and coated between the first protective layer and the second protective layer.

9. The column assembly according to claim 2, characterized in that: The first protective layer and the second protective layer are both made of ink, and the antenna coil is made of conductive silver paste.

10. The column assembly according to any one of claims 1 to 9, characterized in that: The exterior panel is made of glass, or the exterior panel is made of glass ceramics, or the exterior panel is made of plastic.

11. The column assembly according to claim 8, 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.

12. The column assembly according to claim 1, characterized in that: The column assembly also includes a wiring harness, the protective shell is provided with a wire 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 wire through hole and is electrically connected to the control system of the vehicle.

13. The column assembly according to claim 12, characterized in that: The column assembly also includes an insulating sealing plug, which is sleeved and connected to the periphery of the wiring harness, and the insulating sealing plug seals the wire hole.

14. A vehicle, characterized in that: It comprises the pillar assembly and a vehicle body as described in any one of claims 1 to 13, wherein the pillar assembly is connected between the upper and lower beams of the vehicle body.

Images