CN218101682U

CN218101682U - Vehicle-mounted built-in metal cavity antenna and vehicle

Info

Publication number: CN218101682U
Application number: CN202221849316.4U
Authority: CN
Inventors: 王锐; 钱涌; 汪金勇; 严显锋
Original assignee: Suzhou Shuobaid Communication Technology Co ltd
Current assignee: Suzhou Shuobaid Communication Technology Co ltd
Priority date: 2022-07-18
Filing date: 2022-07-18
Publication date: 2022-12-20
Anticipated expiration: 2032-07-18

Abstract

The application relates to wireless communication and vehicle technical field, provides a vehicle-mounted built-in metal cavity antenna and vehicle, the metal cavity antenna includes: the metal base is arranged in the vehicle, and an inner cavity with an opening at one side is formed in the metal base; an antenna group disposed in the internal cavity; and the metal cover plate is arranged on the opening side of the inner cavity and used for fixing the antenna group. In the practical application process, the metal base with the inner cavity is arranged, the antenna group is arranged in the inner cavity, and the metal cover plate covers the opening side of the inner cavity, so that the stability of antenna signals is guaranteed.

Description

Vehicle-mounted built-in metal cavity antenna and vehicle

Technical Field

The application relates to the technical field of wireless communication and vehicles, in particular to a vehicle-mounted built-in metal cavity antenna and a vehicle.

Background

Along with the development of society, people's mode of going out is diversified more, and wherein, the vehicle has become a common instrument of riding instead of walk, and people are in the trip in-process, generally can carry intelligent terminal, for example cell-phone or panel equipment, perhaps, also can install intelligent terminal on the vehicle again, for example: intelligent assistant and navigation equipment.

With the development of intelligent terminals, the intelligent terminals have an increasing demand for traffic, for example, mobile phones commonly used by people generally need higher traffic support in the using process, when people go out by taking vehicles, insufficient mobile phone traffic often occurs, or higher traffic charges need to be paid, and more intelligent terminals need to use networks, for example, intelligent assistants, vehicle-mounted terminals, and the like.

SUMMERY OF THE UTILITY MODEL

In order to solve people and take the vehicle in-process of going out, to the higher demand of the intelligent terminal that uses to the flow, this application embodiment provides a vehicle-mounted built-in metal cavity antenna and vehicle.

The first aspect of the embodiment of the present application provides a vehicle-mounted built-in metal cavity antenna, which is characterized in that the metal cavity antenna comprises:

the metal base is arranged in the vehicle, and an inner cavity with an opening at one side is formed in the metal base;

an antenna group disposed in the internal cavity;

and the metal cover plate is arranged on the opening side of the inner cavity and used for fixing the antenna group.

In one implementation, the antenna group includes a metal reflector plate and a plurality of LDS antennas;

the metal reflecting plate is arranged in the radiation direction of the plurality of LDS antennas so as to enhance the magnetic field intensity of the radiation surface of the plurality of LDS antennas.

In one implementation, the LDS antenna includes a radiating element, a PCB filter, and a coaxial cable;

the radiating unit and the PCB filter are connected to a coaxial cable, and the coaxial cables of the LDS antennas are coaxially arranged.

In one implementation, the coaxial cable is secured to the metal base by a conductive adhesive tape.

In one implementation manner, the radiation unit includes a plastic support, and an antenna metal layer disposed on the plastic support, and a first transmission end for transmitting a 2.4G signal and a second transmission end for transmitting a 5G signal are disposed on the antenna metal layer.

In one implementation mode, the plastic support is further provided with a positioning column and a first fixing hole for fixing the plastic support on the metal base.

In one implementation, the number of LDS antennas is 2.

In one implementation manner, a second fixing hole is formed in the metal reflecting plate, and a third fixing hole matched with the second fixing hole is formed in the metal base so as to clamp the plurality of LDS antennas in the inner cavity.

In one implementation, the metal base and the metal cover plate are made of baking varnish aluminum plates.

The second aspect of the embodiment of the present application provides a vehicle, the vehicle is internally provided with the vehicle-mounted built-in metal cavity antenna provided by the first aspect of the embodiment of the present application.

According to the technical scheme, the embodiment of the application provides a vehicle-mounted built-in metal cavity antenna and a vehicle, the metal cavity antenna comprises: the metal base is arranged in the vehicle, and an inner cavity with an opening at one side is formed in the metal base; an antenna group disposed in the internal cavity; and the metal cover plate is arranged on the opening side of the inner cavity and used for fixing the antenna group.

In the practical application process, the metal base with the inner cavity is arranged, the antenna group is arranged in the inner cavity, and the metal cover plate covers the opening side of the inner cavity, so that the stability of antenna signals is guaranteed.

Drawings

In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic overall structural diagram of a vehicle-mounted antenna with a built-in metal cavity according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of the exploded structure of FIG. 1 provided in accordance with an embodiment of the present application;

fig. 3 is a schematic diagram of an antenna group according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a radiation unit according to an embodiment of the present application.

In the figure: 1-metal base, 11-inner cavity, 12-third fixing hole, 2-antenna group, 21-metal reflecting plate, 211-second fixing hole, 22-LDS antenna, 221-radiating element, 2211-plastic support, 2212-antenna metal layer, 2213-first transmission end, 2214-second transmission end, 2215-positioning column, 2216-first fixing hole, 222-PCB filter, 223-coaxial cable, 224-conductive adhesive tape and 3-metal cover plate.

Detailed Description

In order to solve people and take the vehicle in the in-process of going out, to the higher demand of intelligent terminal to the flow that uses, this application embodiment provides a vehicle-mounted built-in metal cavity antenna and vehicle.

Because the driving environment of the vehicle is mostly in a high-speed, high-temperature and severe-vibration environment, harsh requirements are provided for the stability, sensitivity and capability of resisting severe environment of the WIFI antenna of the main node of wireless network communication, the existing vehicle-mounted WIFI (the 4G mobile cellular network (TD-LTE/FDDLTE/TD-SCDMA/GSM) is basically an external WIFI transmitting antenna, and the external WIFI transmitting antenna solves the antenna gain, but the external WIFI transmitting antenna has disadvantages when used on the vehicle: on one hand, the external WIFI antenna is fixed through the buckle, so that the external WIFI antenna is unstable in fixation, the plug socket can loosen or fall off due to bumping caused by driving of a vehicle on the road, and the angle of the WIFI antenna is difficult to fix, so that a WIFI signal is unstable or no WIFI transmitting signal exists; on the other hand, the external WIFI antenna is easily damaged by collision, so in the vehicle use process, the signal instability phenomenon often appears, and the network signal of the intelligent terminal is influenced. In addition, some routing servers use built-in antennas, but the plastic shells of the routing servers are only large, the WIFI signal antennas are installed inside the routing servers, the plastic shells are poor in product protection, the WIFI signals are attenuated through one layer of the plastic shells, the signal coverage range is narrowed and weakened, and installation is troublesome.

Referring to fig. 1, a schematic view of an overall mechanism of a vehicle-mounted antenna with a built-in metal cavity according to an embodiment of the present application is provided.

Referring to fig. 2, an exploded structure diagram of fig. 1 is provided for an embodiment of the present application.

Referring to fig. 3, a schematic diagram of an antenna group provided in the embodiment of the present application is shown.

Referring to fig. 4, a schematic structural diagram of a radiation unit provided in the embodiment of the present application is shown.

Based on the foregoing problem, a first aspect of the embodiments of the present application provides a vehicle-mounted built-in metal cavity antenna, as shown in fig. 1, the metal cavity antenna includes: the antenna comprises a metal base 1, an antenna group 2 and a metal cover plate 3, wherein the metal base 1 is arranged in a vehicle, and an inner cavity 11 with an opening at one side is formed in the metal base 1; the antenna group 2 is arranged in the inner cavity 11; the metal cover plate 3 is disposed on the open side of the inner cavity 11, and fixes the antenna group 2.

In the practical application process, the metal base 1 with the inner cavity 11 is arranged, the antenna group 2 is arranged in the inner cavity 11, and the metal cover plate 3 covers the opening side of the inner cavity 11, so that the stability of antenna signals is ensured.

Specifically, in some embodiments of the present application, the antenna group 2 includes a metal reflection plate 21 and a plurality of LDS antennas 22 (LDS, laser Direct Structuring), as shown in fig. 2, the number of LDS antennas 22 can be set to 2, the metal reflection plate 21 is disposed in the radiation direction of the plurality of LDS antennas 22, and in the using process, the metal reflection plate 21 disposed in the radiation direction of the LDS antennas 22 can emit electromagnetic waves radiated in other directions toward the radiation surface of the antenna design, so as to enhance the magnetic field strength of the radiation surface of the LDS antennas 22, thereby enhancing the antenna signal.

As shown in fig. 2, in order to ensure the stability of the LDS antenna 22, a second fixing hole 211 is provided on the metal reflection plate 21, and a third fixing hole 12 matched with the second fixing hole 211 is provided on the metal base 1, so as to clamp the LDS antennas 22 in the inner cavity 11.

Referring to fig. 3, in some embodiments of the present application, the LDS antenna 22 includes a radiating element 221, a PCB filter 222, and a coaxial cable 223; the radiating unit 221 and the PCB filter 222 are connected to a coaxial cable 223, and the coaxial cables 223 of the plurality of LDS antennas 22 are coaxially disposed.

In the practical application process, other frequency band signals in the 2.4G and 5G signals provided by the coaxial cable 223 are filtered through the PCB filter 222, so that the 2.4G and 5G signals are prevented from being interfered by other frequency band signals, and the sensitivity of the signals is improved. Wherein, the coaxial cable 223 is fixed on the metal base 1 by a conductive adhesive tape 224.

Specifically, as shown in fig. 4, in some embodiments of the present application, the radiating element 221 includes a plastic support 2211, and an antenna metal layer 2212 disposed on the plastic support 2211, and a first transmission end 2213 for transmitting 2.4G signals and a second transmission end 2214 for transmitting 5G signals are disposed on the antenna metal layer 2212.

In the embodiment of the present application, the antenna metal layer 2212 is formed by activating metal particles doped in the plastic support 2211 by laser, and a metal layer is formed in the plastic support 2211, so as to obtain the pattern form of the antenna metal layer 2212, and a first transmission end 2213 and a second transmission end 2214 connected to the antenna metal layer 2212 are further disposed on the plastic support 2211, so as to connect to the 2.4G signal output port and the 5G signal output port on the coaxial cable 223, respectively.

The on-vehicle built-in metal cavity antenna that this application embodiment provided, to not enough in the technique of current built-in antenna, as an organic whole with 2.4G and 5G frequency channel antenna integration, set up antenna metal layer 2212 through the LDS technology, an array is constituteed to two LDS antennas 22 to fix on metal base 1 through coaxial cable 223, thereby realize the free setting of mounted position.

In order to ensure the stability of the plastic holder 2211 and ensure that the plastic holder 2211 is not in physical contact with the PCB filter 222, the plastic holder 2211 is further provided with a positioning column 2215 and a first fixing hole 2216 for fixing the plastic holder 2211 on the metal base 1. The positioning columns 2215 can be arranged in a conical structure, so that the axial positioning is realized to a certain extent while the radial positioning is realized, and the fixation of the plastic support 2211 is realized through the first fixing holes 2216.

It should be noted that the metal base 1 and the metal cover plate 3 provided in the embodiment of the present application are made of metal materials with the same material, for example, the metal base 1 and the metal cover plate 3 are made of baked aluminum.

For current FPC (Flexible Printed Circuit, flexible Circuit Board) antenna, PCB (Printed Circuit Board) antenna, panel beating antenna scheme cost is higher relatively to and the unstable problem of antenna signal intensity, the built-in metal cavity antenna of on-vehicle that this application embodiment provided, combine LDS technique through metal cavity process design, guarantee that antenna signal possesses higher stability and sensitivity, and possess the ability of reinforcing anti adverse circumstances.

According to the technical scheme, the embodiment of the application provides a vehicle-mounted built-in metal cavity antenna and a vehicle, the metal cavity antenna comprises: the automobile chassis comprises a metal base 1, wherein the metal base 1 is arranged in a vehicle, and an inner cavity 11 with an opening at one side is formed in the metal base 1; an antenna group 2, the antenna group 2 being disposed in the internal cavity 11; and the metal cover plate 3 is arranged on the opening side of the inner cavity 11 and is used for fixing the antenna group 2.

In the practical application process, the metal base 1 with the inner cavity 11 is arranged, the antenna group 2 is arranged in the inner cavity 11, and the metal cover plate 3 is covered on the opening side of the inner cavity 11, so that the stability of an antenna signal is ensured.

The above embodiments are provided to explain the purpose, technical solutions and advantages of the present application in further detail, and it should be understood that the above embodiments are merely illustrative of the present application and are not intended to limit the scope of the present application, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present application should be included in the scope of the present application.

In the description provided herein, numerous specific details are set forth. It can be appreciated, however, that embodiments of the application may be practiced without these specific details. Similarly, in the above description of example embodiments of the application, various features of the embodiments of the application are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the application and aiding in the understanding of one or more of the various application aspects. Where the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this application.

It should be noted that the above-mentioned embodiments illustrate rather than limit the application, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The application may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names. The steps in the above embodiments should not be construed as limited to the order of execution unless otherwise specified.

Claims

1. The utility model provides a built-in metal cavity antenna of on-vehicle, its characterized in that, metal cavity antenna includes:

the automobile seat comprises a metal base (1), wherein the metal base (1) is arranged in a vehicle, and an inner cavity (11) with an opening at one side is formed in the metal base (1);

an antenna group (2), the antenna group (2) being arranged in the interior space (11);

and the metal cover plate (3) is arranged on the opening side of the inner cavity (11) and is used for fixing the antenna group (2).

2. The vehicle-mounted built-in metal cavity antenna according to claim 1, characterized in that the antenna group (2) comprises a metal reflector plate (21) and a plurality of LDS antennas (22);

the metal reflecting plate (21) is arranged in the radiation direction of the plurality of LDS antennas (22) so as to enhance the magnetic field intensity of the radiation surface of the plurality of LDS antennas (22).

3. The vehicle mounted internal metal cavity antenna of claim 2, wherein said LDS antenna (22) comprises a radiating element (221), a PCB filter (222), and a coaxial cable (223);

the radiation unit (221) and the PCB filter (222) are connected to a coaxial cable (223), and the coaxial cables (223) of the LDS antennas (22) are coaxially arranged.

4. The vehicle mounted internal metal cavity antenna according to claim 3, wherein said coaxial cable (223) is fixed to said metal chassis (1) by means of a conductive adhesive tape (224).

5. The vehicle-mounted built-in metal cavity antenna according to claim 3, wherein the radiating element (221) comprises a plastic support (2211), and an antenna metal layer (2212) arranged on the plastic support (2211), and a first transmission end (2213) for transmitting 2.4G signals and a second transmission end (2214) for transmitting 5G signals are arranged on the antenna metal layer (2212).

6. The vehicle-mounted built-in metal cavity antenna as claimed in claim 5, wherein the plastic support (2211) is further provided with a positioning column (2215) and a first fixing hole (2216) for fixing the plastic support (2211) on the metal base (1).

7. The vehicle mounted internal metal cavity antenna of claim 2, wherein the number of LDS antennas (22) is 2.

8. The vehicle-mounted built-in metal cavity antenna as recited in claim 2, wherein a second fixing hole (211) is formed in the metal reflector (21), and a third fixing hole (12) matched with the second fixing hole (211) is formed in the metal base (1) so as to clamp the plurality of LDS antennas (22) in the inner cavity (11).

9. The vehicle-mounted built-in metal cavity antenna as recited in claim 1, wherein the metal base (1) and the metal cover plate (3) are made of baked Aluminum (AIO) plates.

10. A vehicle, characterized in that the vehicle interior is provided with an on-board built-in metal cavity antenna according to any one of claims 1 to 9.