Automobile antenna device

Abstract

The present invention relates to the technical field of automobile antennas, and discloses an automobile antenna device, comprising a bottom plate. The present invention, through the designed hollow shell and plug-in plate, enables the device to be fixed when a covering shell is inserted into the inner side of a limiting seat to protect an antenna circuit board, so that the covering shell cannot be separated from the inner side of the limiting seat when the expansion bolt is not taken out, thereby ensuring that the covering shell remains stable in harsh environments, such as vibration and impact when a vehicle is running at high speed, and extending the service life of the antenna. After the plug-in plate is inserted into a slot of the hollow shell, a limiting strip covered with a damping pad is inserted into a limiting groove on the front end surface of the plug-in plate, thereby increasing the resistance between the plug-in plate and the limiting strip inside the hollow shell. In a high-vibration environment, increasing the resistance helps to fix the covering shell, prevents the plug-in plate from shifting or loosening from the hollow shell due to vibration, and solves the problem that the covering shell can be easily separated from the inner side of the limiting seat.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile antennas, in particular to an automobile antenna device. Background Art

[0002] A car antenna is part of a car's communication system and is used to receive and send radio waves. It allows radio receivers in cars, such as radios, GPS navigation systems, satellite radios, mobile phones, etc., to receive external signals.

[0003] Most common car antennas on the market are shark fin antennas, which are fixed on the back of the car roof. Specifically, refer to a car antenna device with publication number CN213782256U, in which the circuit board in the car antenna is wrapped by an inner shell, but generally the inner shell directly covers the outside of the circuit board, and is fixed by clamping or squeezing because the inner side of the inner shell is smaller than the size of the connection. Once the car is subjected to vibration and impact when driving at high speed, it is easy to cause the connection between the inner shell and the outside of the circuit board to separate. Not only may the car be vibrated and make abnormal noises due to the separation during subsequent driving, but the inner side of the inner shell will also bump against the outside of the circuit board. As we all know, the circuit board is fragile as a whole, and the electronic components connected to the circuit board are easily damaged by the bumps of the inner shell for a long time. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an automobile antenna device, including a base plate. The present invention designs a hollow shell and a plug-in plate, so that the device can be fixed when a covering shell is inserted into the inner side of a limiting seat to protect the antenna circuit board, so that the covering shell cannot be separated from the inner side of the limiting seat when the expansion bolt is not removed, thereby ensuring that the covering shell remains stable in harsh environments, such as vibration and impact when the vehicle is driving at high speed, thereby extending the service life of the antenna. After the plug-in plate is inserted into the slot of the hollow shell, the limiting strip covered with the damping pad is inserted into the limiting groove on the front end surface of the plug-in plate, thereby increasing the resistance between the plug-in plate and the limiting strip inside the hollow shell. In a high vibration environment, the increased resistance helps to fix the covering shell, prevents the plug-in plate from shifting or loosening from the hollow shell due to vibration, and solves the problem that the covering shell can easily detach from the inner side of the limiting seat.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: an automobile antenna device comprises a base plate, a limiting seat is fixedly connected to the top of the base plate, a covering shell is slidably connected to the inner side of the limiting seat, an antenna circuit board is fixedly connected to the lower inner side of the limiting seat, a hollow shell is fixedly connected to the middle of the rear end surface of the limiting seat, a slot is arranged on the inner side of the hollow shell, a first plug hole is opened in the middle of the rear interior of the hollow shell, a limiting strip is fixedly connected to the rear of the inner side of the hollow shell, a damping pad is fixedly connected to the outer side of the limiting strip, a plug plate is fixedly connected to the middle below the rear end surface of the covering shell, a limiting slot is arranged below the rear end surface of the plug plate, a second plug hole is opened in the middle of the plug plate, an expansion plug is slidably connected to the middle of the rear interior of the hollow shell, and a rebound rubber pad is fixedly connected to the inner side of the expansion plug.

[0006] Preferably, the interior of the hollow shell is slidably connected to the outside of the plug plate, the outside of the damping pad is in contact with the rear end face of the plug plate, and the middle of the interior of the plug plate is slidably connected to the outside of the expansion plug. The covering shell can cover the outside of the antenna circuit board and protect it while fixing the antenna circuit board, so that the covering shell cannot separate from the inside of the limit seat when the expansion plug is not removed, thereby ensuring that the covering shell remains stable in harsh environments, such as vibration and impact when a vehicle is driving at high speed, thereby extending the service life of the antenna.

[0007] Preferably, the longitudinal section of the plug plate is in an inverted L shape, and the width and depth of the slot on the inner side of the hollow shell match the bottom width and longitudinal length of the plug plate. When the covering shell covers the outer side of the antenna circuit board on the inner side of the limit seat, the antenna circuit board can be fixed, and the connection between the plug plate and the hollow shell has a certain positioning effect.

[0008] Preferably, there are several limit strips, and the limit strips are arranged horizontally as a whole at the rear position of the inner side of the hollow shell. The number, position and cross-sectional shape of the limit grooves on the rear end face of the plug plate match the number, position and cross-sectional shape of the limit strips, and the thickness of the damping pad exceeds the inner cross-sectional width of the limit groove by 2 mm, which can increase the resistance between the plug plate and the limit strips inside the hollow shell. In a high vibration environment, the increased resistance helps to fix the covering shell and prevent the plug plate from shifting or loosening from the hollow shell due to vibration.

[0009] Preferably, the calibers of the first socket at the rear interior of the hollow shell and the second socket inside the plug plate both match the diameter of the longitudinal section of the expansion plug, and the first socket at the rear interior of the hollow shell corresponds to the second socket inside the plug plate inserted into the inner side of the hollow shell, the first socket at the rear interior of the hollow shell is interconnected with the slot inside the hollow shell, the expansion plug is used to be inserted into the first socket of the hollow shell and the second socket of the plug plate, and the rebound rubber pad can always expand the expansion plug outward when the expansion plug is inserted into the first socket and the second socket, thereby improving the stability of the expansion plug in the first socket and the second socket.

[0010] Preferably, an anti-interference layer is fixedly connected to the inner side of the covering shell, a conductive cloth is provided on the inner side of the anti-interference layer, a metal foam layer is provided on the outer end surface of the conductive cloth, an electromagnetic shielding film is provided on the outer end surface of the metal foam layer, and the outer end surface of the electromagnetic shielding film is fixedly connected to the inner and outer sides of the anti-interference layer. When the covering shell covers and protects the antenna circuit board, it can effectively shield external electromagnetic interference and protect the antenna chip from the negative influence of the external electromagnetic field, thereby improving the signal reception and transmission quality of the antenna.

[0011] Preferably, the thickness of the conductive cloth is 1 mm, and the density of the conductive cloth is 400 g / m². The conductive cloth is made of nylon cloth coated with a layer of copper material. The conductive cloth is located in the inner layer of the anti-interference layer. The conductive cloth has good flexibility and is easy to fit the inside of a covering shell with a complex shape, while providing a good electromagnetic shielding effect.

[0012] Preferably, the thickness of the metal foam layer is 2 cm, and the density of the metal foam layer is 0.4 g / cm³. The metal foam layer is located in the middle layer of the anti-interference layer. The metal foam layer is a porous material with good electromagnetic shielding performance, and also has certain sound absorption and heat insulation effects.

[0013] Preferably, the thickness of the electromagnetic shielding film is 150 μm, and the electromagnetic shielding film is located at the outer layer of the anti-interference layer. The electromagnetic shielding film is a light and thin material with high electromagnetic shielding efficiency, which can prevent interference from high-frequency electromagnetic waves.

[0014] Compared with the prior art, the present invention provides a car antenna device, which has the following beneficial effects:

[0015] 1. Compared with the prior art, the present invention, through the designed hollow shell and plug-in plate, enables the device to be fixed when the covering shell is inserted into the inner side of the limit seat to protect the antenna circuit board, so that the covering shell cannot be separated from the inner side of the limit seat when the expansion bolt is not taken out, which can ensure that the covering shell remains stable in harsh environments, such as vibration and impact when the vehicle is driving at high speed, and extend the service life of the antenna. After the plug-in plate is inserted into the slot of the hollow shell, the limit strip covered by the damping pad is inserted into the limit groove on the front end surface of the plug-in plate, which can increase the resistance between the plug-in plate and the limit strip inside the hollow shell. In a high vibration environment, the increased resistance helps to fix the covering shell and prevent the plug-in plate from shifting or loosening from the hollow shell due to vibration, thereby solving the problem that the covering shell can easily detach from the inner side of the limit seat.

[0016] 2. Compared with the prior art, the present invention adopts a designed anti-interference layer, so that when the covering shell covers and protects the antenna circuit board, the device can effectively shield external electromagnetic interference and protect the antenna chip from the negative influence of external electromagnetic fields, thereby improving the signal reception and transmission quality of the antenna. The conductive cloth has good flexibility and is easy to fit the inside of the covering shell with complex shapes, while providing good electromagnetic shielding effect. The metal foam layer is a porous material with good electromagnetic shielding performance and certain sound absorption and heat insulation effects. The electromagnetic shielding film is a thin and light material with high electromagnetic shielding efficiency, which can prevent interference from high-frequency electromagnetic waves. These three combine multiple characteristics such as conductivity, sound absorption, heat insulation and lightweight, effectively prevent external interference, and can adapt to the internal structure of the covering shell of various shapes and sizes, with strong versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the present invention when the whole is horizontally rotated 180 degrees and exploded;

[0019] Figure 3 It is a longitudinal section and exploded structure schematic diagram of the hollow shell of the present invention;

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the expansion plug of the present invention;

[0021] Figure 5 This is a schematic diagram of the structure of the cover shell of the present invention rotated 180 degrees longitudinally;

[0022] Figure 6 It is a schematic diagram of the longitudinal section structure of the anti-interference layer of the present invention.

[0023] Among them: 1. bottom plate; 2. limit seat; 201. antenna circuit board; 202. hollow shell; 203. slot; 204. first plug hole; 205. limit strip; 206. damping pad; 3. cover shell; 301. plug plate; 302. limit slot; 303. second plug hole; 4. expansion plug; 401. rebound rubber pad; 5. anti-interference layer; 501. conductive cloth; 502. metal foam layer; 503. electromagnetic shielding film. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Embodiment 1

[0025] See also Figure 1-Figure 5 A car antenna device includes a bottom plate 1, a limiting seat 2 is arranged on the top of the bottom plate 1, a covering shell 3 is inserted and slid into the inner side of the limiting seat 2, an antenna circuit board 201 is electrically connected to the lower inner side of the limiting seat 2, a hollow shell 202 is welded in the middle of the rear end surface of the limiting seat 2, a slot 203 from top to bottom is arranged in the inner side of the hollow shell 202, a first plug hole 204 from front to back is arranged in the middle of the inner rear of the hollow shell 202, a limiting strip 205 is welded in the inner rear of the hollow shell 202, and a damping pad 206 is bonded to the outer side of the limiting strip 205 by adhesive. A plug plate 301 is welded in the middle below the rear end face of the covering shell 3, a limiting groove 302 is opened from bottom to top below the rear end face of the plug plate 301, a second plug hole 303 is opened from front to back in the middle of the plug plate 301, the expansion plug 4 is inserted into the middle of the rear of the hollow shell 202 and slides back and forth, a rebound rubber pad 401 is arranged on the inside of the expansion plug 4, the inside of the hollow shell 202 is slidably connected with the outside of the plug plate 301, the outside of the damping pad 206 contacts with the rear end face of the plug plate 301, and the middle of the inside of the plug plate 301 is slidably connected with the outside of the expansion plug 4.

[0026] In the present embodiment: the covering shell 3 can cover the outside of the antenna circuit board 201 and protect it, and at the same time, the antenna circuit board 201 can be fixed, so that the covering shell 3 cannot be separated from the inside of the limiting seat 2 when the expansion bolt 4 is not removed, which can ensure that the covering shell 3 remains stable in harsh environments, such as vibration and impact when the vehicle is driving at high speed, thereby extending the service life of the antenna.

[0027] In an optional embodiment, the longitudinal section of the plugboard 301 is in an inverted L shape, and the width and depth of the slot 203 inside the hollow shell 202 match the bottom width and longitudinal length of the plugboard 301 .

[0028] In this embodiment: when the covering shell 3 covers the outer side of the antenna circuit board 201 inside the limiting seat 2, the antenna circuit board 201 can be fixed, and the connection between the plug board 301 and the hollow shell 202 has a certain positioning effect.

[0029] In an optional embodiment: the number of limit strips 205 is several, and the limit strips 205 are arranged horizontally as a whole at the inner rear position of the hollow shell 202, the number, position and cross-sectional shape of the limit grooves 302 on the rear end face of the plug plate 301 are matched with the number, position and cross-sectional shape of the limit strips 205, and the thickness of the damping pad 206 exceeds the inner cross-sectional width of the limit groove 302 by 2 mm.

[0030] In this embodiment, the resistance between the plug board 301 and the inner limit strip 205 of the hollow shell 202 can be increased. In a high vibration environment, the increased resistance helps to fix the cover shell 3 and prevent the plug board 301 from shifting or loosening from the hollow shell 202 due to vibration.

[0031] In an optional embodiment: the calibers of the first socket 204 at the rear interior of the hollow shell 202 and the second socket 303 inside the plug plate 301 both match the diameter of the longitudinal section of the expansion bolt 4, and the first socket 204 at the rear interior of the hollow shell 202 corresponds to the second socket 303 inside the plug plate 301 inserted into the inner side of the hollow shell 202, and the first socket 204 at the rear interior of the hollow shell 202 is interconnected with the slot 203 inside the hollow shell 202.

[0032] In this embodiment: the expansion plug 4 is used to be inserted into the first socket 204 of the hollow shell 202 and the second socket 303 of the plug plate 301, and the rebound rubber pad 401 can always expand the expansion plug 4 outward when the expansion plug 4 is inserted into the first socket 204 and the second socket 303, thereby improving the stability of the expansion plug 4 in the first socket 204 and the second socket 303. Embodiment 2

[0033] See also Figure 5-Figure 6 The inner side of the covering shell 3 is bonded with the anti-interference layer 5 by glue, the inner side of the anti-interference layer 5 is bonded with the conductive cloth 501 by glue, the outer end surface of the conductive cloth 501 is sprayed with a metal foam layer 502, the outer end surface of the metal foam layer 502 is provided with an electromagnetic shielding film 503, and the outer end surface of the electromagnetic shielding film 503 is fixedly connected to the inner and outer sides of the anti-interference layer 5.

[0034] In this embodiment: when the covering shell 3 covers and protects the antenna circuit board 201, external electromagnetic interference can be effectively shielded, and the antenna chip can be protected from the negative influence of the external electromagnetic field, thereby improving the signal reception and transmission quality of the antenna.

[0035] In an optional embodiment: the thickness of the conductive cloth 501 is 1 mm, and the density of the conductive cloth 501 is 400 g / m², the conductive cloth 501 is made of nylon cloth coated with a layer of copper material, and the conductive cloth 501 is located in the inner layer of the anti-interference layer 5.

[0036] In this embodiment, the conductive cloth 501 has good flexibility and is easy to fit the inside of the covering shell 3 of a complex shape, while providing a good electromagnetic shielding effect.

[0037] In an optional embodiment: the thickness of the metal foam layer 502 is 2 cm, and the density of the metal foam layer 502 is 0.4 g / cm³, and the metal foam layer 502 is located in the middle layer of the anti-interference layer 5.

[0038] In this embodiment: the metal foam layer 502 is a porous material, which has good electromagnetic shielding performance, and also has certain sound absorption and heat insulation effects.

[0039] In an optional embodiment, the thickness of the electromagnetic shielding film 503 is 150 μm, and the electromagnetic shielding film 503 is located at the outer layer of the anti-interference layer 5 .

[0040] In this embodiment: the electromagnetic shielding film 503 is a thin and light material with high electromagnetic shielding efficiency, which can prevent the interference of high-frequency electromagnetic waves.

[0041] Working principle:

[0042] During installation, the antenna circuit board 201 is installed on the inner side of the limiting seat 2 on the top of the bottom plate 1. An interface is set on the inner side of the limiting seat 2. The antenna circuit board 201 can be inserted into the interface. After docking, the anti-interference layer 5 is pasted on the inner side of the covering shell 3. The inner side of the anti-interference layer 5 is provided with three layers. The inner layer is a conductive cloth 501, which is a layer close to the antenna circuit board 201. The middle layer is a metal foam layer 502. The outer layer is an electromagnetic shielding film 503 that is tightly attached to the inner wall of the anti-interference layer 5. The conductive cloth 501 has good flexibility and is easy to fit the complex shape of the covering shell 3. The metal foam layer 502 is a porous material with good electromagnetic shielding performance and certain sound absorption and heat insulation effects. The electromagnetic shielding film 503 is a thin material with high electromagnetic shielding efficiency and can prevent interference from high-frequency electromagnetic waves. The stacking of these three materials can provide multi-level electromagnetic shielding and effectively prevent external interference while keeping the inner side of the covering shell 3 compact and light. After the anti-interference layer 5 is installed, the covering shell 3 is put on the outer side of the antenna circuit board 201, and the rear end of the covering shell 3 is covered. The plug plate 301 is arranged on the surface, and the plug plate 301 is aligned with the slot 203 at the top of the hollow shell 202 on the rear end surface of the limit seat 2 and inserted downwardly. The limit strip 205 and the damping pad 206 on the inner side of the hollow shell 202 are simultaneously inserted into the limit groove 302 on the rear end surface of the plug plate 301. The damping pad 206 can increase the resistance between the limit strip 205 and the plug plate 301. After the first plug hole 204 in the middle of the rear inside of the hollow shell 202 is aligned with the second plug hole 303 in the plug plate 301, the expansion plug 4 is taken out and inserted into the expansion plug 4 at the rear inside of the hollow shell 202. The expansion plug 4 is inserted into the first socket 204 and then into the second socket 303 through the first socket 204 until it is completely inserted into the first socket 204 and the second socket 303. At this time, the rebound rubber pad 401 on the inside of the expansion plug 4 always drives the expansion plug 4 to expand outward, which can improve the stability of the expansion plug 4 in the first socket 204 and the second socket 303. After the covering shell 3 is installed, the base plate 1 can be installed on the inner side of the roof of the car and fixed, and the covering shell 3 together with the antenna circuit board 201 can enter the inner side of the shark fin shell on the top of the car to complete the installation.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A car antenna device, comprising a base plate (1), characterized in that: The top of the bottom plate (1) is fixedly connected to a limit seat (2), the inner side of the limit seat (2) is slidably connected to a cover shell (3), the lower side of the inner side of the limit seat (2) is fixedly connected to an antenna circuit board (201), the middle of the rear end surface of the limit seat (2) is fixedly connected to a hollow shell (202), the inner side of the hollow shell (202) is provided with a slot (203), the middle of the inner side of the hollow shell (202) is provided with a first plug hole (204), the inner side of the hollow shell (202) is fixedly connected to a A limit strip (205), a damping pad (206) is fixedly connected to the outer side of the limit strip (205), a plug plate (301) is fixedly connected to the middle below the rear end surface of the cover shell (3), a limit slot (302) is provided below the rear end surface of the plug plate (301), a second plug hole (303) is provided in the middle of the plug plate (301), an expansion bolt (4) is slidably connected to the middle of the rear inside of the hollow shell (202), and a rebound rubber pad (401) is fixedly connected to the inner side of the expansion bolt (4); The interior of the hollow shell (202) is slidably connected to the exterior of the plug plate (301), the exterior of the damping pad (206) is in contact with the rear end surface of the plug plate (301), and the interior middle of the plug plate (301) is slidably connected to the exterior of the expansion bolt (4); The number of the limit strips (205) is a plurality, and the limit strips (205) are arranged as a whole in a transverse manner at the inner rear position of the hollow shell (202); the number, position and cross-sectional shape of the limit slots (302) on the rear end surface of the plug plate (301) match the number, position and cross-sectional shape of the limit strips (205), and the thickness of the damping pad (206) exceeds the inner cross-sectional width and length of the limit slots (302) by two millimeters; An anti-interference layer (5) is fixedly connected to the inner side of the covering shell (3), a conductive cloth (501) is arranged on the inner side of the anti-interference layer (5), a metal foam layer (502) is arranged on the outer end surface of the conductive cloth (501), an electromagnetic shielding film (503) is arranged on the outer end surface of the metal foam layer (502), and the outer end surface of the electromagnetic shielding film (503) is fixedly connected to the inner and outer sides of the anti-interference layer (5); The thickness of the conductive cloth (501) is one millimeter, and the density of the conductive cloth (501) is four hundred grams per square meter. The conductive cloth (501) is made of nylon cloth coated with a layer of copper material. The conductive cloth (501) is located in the inner layer of the anti-interference layer (5); The thickness of the metal foam layer (502) is two centimeters, and the density of the metal foam layer (502) is 0.4 grams per cubic centimeter. The metal foam layer (502) is located in the middle layer of the anti-interference layer (5); The thickness of the electromagnetic shielding film (503) is one hundred and fifty micrometers, and the electromagnetic shielding film (503) is located at the outer layer of the anti-interference layer (5).

2. The vehicle antenna device according to claim 1, characterized in that: The longitudinal section of the plug board (301) is in an inverted L-shape, and the width and depth of the slot (203) inside the hollow shell (202) match the bottom width and longitudinal length of the plug board (301).

3. The vehicle antenna device according to claim 1, characterized in that: The diameters of the first plug hole (204) at the rear of the hollow shell (202) and the second plug hole (303) at the plug plate (301) are both matched with the diameter of the longitudinal section of the expansion bolt (4), and the first plug hole (204) at the rear of the hollow shell (202) corresponds to the second plug hole (303) at the plug plate (301) inserted into the inner side of the hollow shell (202), and the first plug hole (204) at the rear of the hollow shell (202) is interconnected with the slot (203) at the inner side of the hollow shell (202).

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