JP5095490B2 - Vehicle antenna structure - Google Patents

Description

  The present invention relates to a vehicle antenna structure including an antenna body in a vehicle body panel.

In general, a vehicle antenna structure including an antenna body in a vehicle body panel is known (see, for example, Patent Document 1). In this type, a recess or an opening is provided in a part of the vehicle body panel, and the recess or the opening is closed by a cover member formed of a resin material having an antenna pattern.
JP-A-2005-51338

However, in the conventional configuration, the cover member is disposed in the concave portion or the opening of the vehicle body panel, so that the cover member is exposed on the outer surface of the vehicle body panel, and the joint portion between the cover member and the vehicle body panel is visually recognized. Therefore, there was room for improvement in terms of vehicle aesthetics.
Accordingly, the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a vehicle antenna structure that can improve the appearance of a vehicle when an antenna body is provided in a vehicle body panel. .

In order to solve the above-described problems, the present invention provides a vehicle antenna structure including an antenna body in a vehicle body panel, wherein the vehicle body panel is formed of an outer surface panel and an inner surface panel disposed inside the outer surface panel. An inner panel is provided with a recess, and the antenna body is disposed in the recess, and the inner panel and the antenna body are covered with the outer panel, and the antenna body is a flat antenna body in which a positioning hole is formed. And tongue pieces respectively extending from both ends of the antenna body, and the tongue pieces are elastically deformed and inserted into openings formed on the side surfaces of the recesses, and the positioning holes are formed on the bottom surfaces of the recesses. The antenna body is engaged with the formed boss, and the antenna body is locked to the recess by the restoring force of the tongue .
According to this configuration, since the vehicle body panel is formed by the outer panel and the inner panel disposed inside the outer panel, the antenna body is disposed in the recess of the inner panel, and the antenna body is sandwiched between the outer panels. Thus, the antenna body can be provided in the vehicle body panel with a simple configuration. Further, since the inner panel and the antenna body are uniformly covered by the outer panel, for example, a cover member for covering the antenna body is not exposed on the outer surface of the vehicle body panel, and the antenna body is provided in the vehicle body panel. In this case, the aesthetics of the vehicle can be improved.

According to the configuration of this, without using fasteners such as screws, the antenna body can be fixed in the recess by a simple structure. Furthermore, the antenna body is positioned by the restoring force of the tongue piece in a state where the positioning hole is fitted to the boss portion of the recess. For this reason, even if it is a case where a vibration arises during driving | running | working of a motor vehicle, an antenna body can be firmly fixed to a recessed part.

  The base of the tongue piece may be configured to be deformable in the extending direction of the tongue piece. According to this, when the tongue piece is deformed in the extending direction with respect to the load in the extending direction of the tongue piece, this stress is prevented from being applied to the antenna body, and the deformation of the antenna body is prevented. The

  The outer panel may be made of a material having a higher dielectric constant than the inner panel. According to this configuration, the outer panel having a high dielectric constant functions to shorten the received radio wave, so that the antenna body can be downsized.

  According to the present invention, since the vehicle body panel is formed by the outer panel and the inner panel disposed inside the outer panel, the antenna body is disposed in the recess of the inner panel, and the antenna body is sandwiched between the outer panels. Thus, the antenna body can be provided in the vehicle body panel with a simple configuration. Further, since the inner panel and the antenna body are uniformly covered by the outer panel, for example, a cover member for covering the antenna body is not exposed on the outer surface of the vehicle body panel, and the antenna body is provided in the vehicle body panel. In this case, the aesthetics of the vehicle can be improved.

FIG. 1 is a perspective view showing a rear portion of the automobile 10 (vehicle). A trunk room 11 is formed at the rear of the automobile 10, and a trunk lid (body panel) 12 is attached to the trunk room 11 so as to be freely opened and closed. In the present embodiment, the antenna body 13 is embedded in the trunk lid 12, and the vehicle antenna structure 50 is formed by including the trunk lid 12 and the antenna body 13.
FIG. 2 is a side sectional view of the vehicle antenna structure 50, and FIG. 3 is an exploded perspective view of the vehicle antenna structure 50. As shown in FIGS. 2 and 3, the trunk lid 12 has a two-layer structure including an outer panel 21 exposed on the surface of the vehicle and an inner panel 22 disposed inside the outer panel 21. The antenna body 13 is interposed between the outer panel 21 and the inner panel 22. In addition, a reinforcing plate 30 that reinforces the outer panel 21 and the inner panel 22 and functions as a ground for the antenna body 13 is disposed inside the inner panel 22.

  The antenna body 13 includes a main body (antenna main body) 14 and tongue pieces 15 extending from both ends of the main body 14, and is integrally formed of a metal flat plate. The tongue piece 15 is formed so as to be bent in the vertical direction. Further, a positioning hole 14 </ b> A is formed between the tongue pieces 15, 15 at the approximate center of the main body 14.

The outer panel 21 is formed of a resin plate material having a higher dielectric constant than that of the inner panel 22 such as vinyl chloride or polyurethane. According to this, since the outer panel 21 having a high dielectric constant fulfills the function of shortening the wavelength of the radio wave incident on the outer panel 21, the radio wave can be received by the antenna body 13 without reducing the reception level. The reception performance of the antenna body 13 can be improved. Further, since the wavelength of the incident radio wave is shortened by the outer panel 21, the length of the main body 14 that receives the radio wave can be shortened, and the antenna body 13 can be downsized. The outer panel 21 is formed so as to form the trunk lid 12 by a single plate material.
Here, if the plate thickness of the outer panel 21 is too thick, the directivity and gain of the antenna body 13 are lowered. On the other hand, when the thickness of the outer panel 21 is reduced, the directivity and gain of the antenna body 13 are improved, but the strength of the outer panel 21 is lowered. In the present embodiment, the outer panel 21 has a thickness of about 2 to 3 mm in order to ensure strength while maintaining the directivity and gain of the antenna body 13.

The inner surface panel 22, for example, by lower resin sheet dielectric constant such as polypropylene or polyethylene, it is formed in a substantially same shape as the outer panel 21, a substantially central portion of the inner surface panel 22, the front-rear direction of the vehicle A recess 23 is formed to extend to the surface. The above-described antenna body 13 can be locked to the inner panel 22 in the recess 23.
Specifically, as shown in FIG. 3, the side surface 23 </ b> A of the recess 23 is formed with an opening 24 into which the tongue piece 15 can be inserted obliquely downward at a position facing each other. The height of the opening 24 is formed to be substantially the same as that of the tongue piece 15 to prevent the position of the antenna body 13 from shifting in the vertical direction. A boss (boss portion) 25 is formed between the openings 24 and 24 on the bottom surface 23 </ b> B of the recess 23. The boss 25 is for fitting in a positioning hole 14A formed in the main body 14 to prevent the antenna body 13 from shifting in the front-rear or left-right direction.
In this configuration, the tongue piece 15 is elastically deformed and inserted into the opening 24 extending obliquely downward, whereby the inserted tongue piece 15 is firmly locked to the recess 23 by its restoring force.
Further, the width L of the concave portion 23 is longer than the total length of the width W1 of the main body 14 and the width W2 of the tongue piece 15 and shorter than the width (W1 + 2W2) of the antenna body 13. That is,
W1 + W2 <L <W1 + 2W2
It is formed to satisfy. Thereby, the antenna body 13 can be easily attached to the recessed part 23 only by elastically deforming the tongue piece 15.

As shown in FIGS. 3 and 4, the reinforcing plate 30 includes support portions 31 and 31 that extend in the front-rear direction and support the inner panel 22, and a connection portion 32 that connects the support portions 31 and 31. It is a metal plate formed in a substantially U-shape, and is connected to the vehicle body frame through a rotating hinge or the like of the trunk lid 12 so as to be conductive. In the present embodiment, as shown in FIG. 2, the reinforcing plate 30 has support portions 31 and 31 attached to the inner side of the inner surface panel 22, and the connecting portion 32 bulging downward.
A booster circuit board 33 for amplifying a signal received by the antenna body 13 is disposed on the connecting portion 32. A bracket 34 is attached to the booster circuit board 33, and the bracket 34 is fixed to the connecting portion 32 of the reinforcing plate 30 with bolts 35 and nuts 36. As a result, the booster circuit board 33 is grounded via the reinforcing plate 30.
The booster circuit board 33 is provided with a power supply cable 37 for supplying power to the antenna body 13, and a terminal 38 formed at the tip of the power supply cable 37 is formed on the bottom surface 23 </ b> B of the recess 23 of the inner panel 22. Through the through hole 26, the antenna body 13 is attached to the power feeding portion 16 extending to the inner surface panel 22. The booster circuit board 33 is connected to an output cable 39 for outputting an antenna signal amplified by the booster circuit board 33 to an audio device (not shown). In this configuration, since the antenna body 13 is provided on the trunk lid 12 that is opened and closed, the output cable 39 is a curled cord cable that can expand and contract during the opening and closing operation.

Next, the locking structure of the antenna body 13 will be described.
As described above, the antenna body 13 includes the tongue pieces 15 and 15 at both ends of the main body 14, respectively. As shown in FIG. 5, the tongue piece 15 is formed so that the width of the base end portion 15A is narrower than the tongue piece main body (base portion) 15B. Accordingly, the tongue piece 15 can be elastically deformed in the vertical direction with respect to the antenna body 13 at the base end portion 15A.
Further, the tongue piece 15 is configured to be deformable by expanding and contracting with respect to an external force F from the extending direction of the tongue piece 15. Specifically, the tongue piece main body 15 </ b> B includes a hypotenuse 18 extending obliquely from the base end portion 15 </ b> A and a deformed hole 19 continuous with a side 15 </ b> C opposite to the hypotenuse 18. The deformation hole portion 19 includes a hole 19A formed in the tongue piece main body 15B, and an opening 19B communicating the hole 19A and the side 15C of the tongue piece main body 15B. In this configuration, when an external force F is applied to the tongue piece 15 in the extending direction of the tongue piece 15, the tongue piece 15 is deformed by rotating the hypotenuse portion 18 in the direction of the arrow X and the deformation hole. When the part 19 is crushed as shown by a solid line, the part 19 expands and contracts in the extending direction. According to this, when the tongue piece 15 is deformed in the extending direction with respect to the load in the extending direction of the tongue piece 15, this stress is prevented from being applied to the main body 14, and the deformation of the main body 14 is prevented. Is prevented.

The procedure for attaching the antenna body 13 will be described.
First, one tongue piece 15 of the antenna body 13 is inserted into the opening 24 and brought into contact with the side surface 23A on the side where the main body 14 is inserted. Next, the other tongue piece 15 is deformed downward, and the tip of the tongue piece 15 is inserted into the opening 24 on the other side.
In this state, the restoring force in the direction of the arrow Y acts on the tongue piece 15 of the antenna body 13 as shown in FIG. For this reason, when the antenna body 13 is moved left and right and the boss 25 of the recess 23 is fitted into the positioning hole 14A formed in the body 14, the body 14 is pressed against the bottom surface 23B of the recess 23 by the restoring force of the tongue piece 15. It is done.
In this configuration, the tongue piece 15 of the antenna body 13 is elastically deformed and inserted into the opening 24 formed in the side surface 23A of the recess 23 of the inner panel 22, and the positioning hole 14A formed in the main body 14 of the antenna body 13 is used. Is fitted into the boss 25 formed on the bottom surface 23B of the concave portion 23, and the antenna body 13 is locked to the concave portion 23 by the restoring force of the tongue piece 15, so that the antenna can be simply configured without using a fixing tool such as a screw. The body 13 can be fixed to the recess 23. Furthermore, the antenna body 13 is positioned by the restoring force of the tongue piece 15 in a state where the positioning hole 14 </ b> A is fitted to the boss 25 of the recess 23. For this reason, the antenna body 13 can be firmly fixed to the recess 23 even when vibration occurs during the operation of the automobile.

  Subsequently, the outer panel 21 is attached to the outside of the inner panel 22 to which the antenna body 13 is fixed so as to cover the inner panel 22 and the antenna body 13. In this configuration, the trunk lid 12 is formed by the outer panel 21 and the inner panel 22 disposed inside the outer panel 21, and therefore the antenna body 13 is disposed in the recess 23 of the inner panel 22. Is sandwiched between the outer panel 21 and the antenna body 13 can be embedded in the trunk lid 12 with a simple configuration. Further, since the inner panel 22 and the antenna body 13 are uniformly covered by the outer panel 21, for example, the cover member is not exposed on the outer surface of the trunk lid 12, and the antenna body 13 is embedded in the trunk lid 12. In this case, the aesthetics of the vehicle 10 can be improved.

Next, a modified example will be described.
FIG. 7 is a partial cross-sectional view showing a state where the antenna body 13 is attached to the recess 23. The opening 24 on the side surface 23A of the recess 23 may be formed along the bottom surface 23B of the recess 23 instead of obliquely below. Even in this configuration, the main body 14 of the antenna body 13 is pressed against the bottom surface 23B of the recess 23 by the restoring force of the tongue piece 15, so that the antenna body 13 can be firmly fixed to the recess 23.
FIG. 8 is a partial cross-sectional view showing another modified example. This configuration differs from that described above in that a wall 40 is formed at the end of the opening 24. In the present configuration, when the antenna body 13 is attached to the recess 23, the tip of the tongue piece 15 comes into contact with the wall portion 40. Therefore, the external force F in FIG. 8 is applied to the tongue piece 15 in the extending direction of the tongue piece 15. It has come to take.
Even in such a case, the tongue piece main body 15B of the tongue piece 15 is formed with the oblique side portion 18 and the deformation hole portion 19, so that an external force F is applied to the oblique side portion 18 and the deformation hole portion 19. 5, when the tongue piece 15 is deformed in the extending direction with respect to the load in the extending direction of the tongue piece 15, this stress is prevented from being applied to the main body 14, The deformation of the main body 14 is prevented.

  According to the present embodiment, the trunk lid 12 is formed by the outer panel 21 and the inner panel 22 disposed inside the outer panel 21, and the antenna body 13 is disposed in the recess 23 of the inner panel 22. By sandwiching the antenna body 13 between the outer panel 21, the antenna body 13 can be embedded in the trunk lid 12 with a simple configuration. Furthermore, since the inner panel 22 and the antenna body 13 are uniformly covered by the outer panel 21, for example, a cover member for covering the antenna body 13 is not exposed on the outer surface of the trunk lid 12, and the trunk lid 12 is not exposed. When the antenna body 13 is embedded, the aesthetic appearance of the vehicle 10 can be improved.

  In addition, according to the present embodiment, the antenna body 13 includes the flat plate-shaped main body 14 in which the positioning holes 14A are formed, and the tongue pieces 15 extending from both ends of the main body 14, respectively. Is inserted into the opening 24 formed on the side surface 23A of the recess 23 and the positioning hole 14A is fitted into the boss 25 formed on the bottom surface 23B of the recess 23, and the restoring force of the tongue piece 15 causes the antenna body to Since 13 is locked to the recess 23, the antenna body 13 can be fixed to the recess 23 with a simple configuration without using a fixing tool such as a screw. Furthermore, the antenna body 13 is positioned by the restoring force of the tongue piece 15 in a state where the positioning hole 14 </ b> A is fitted to the boss 25 of the recess 23. For this reason, the antenna body 13 can be firmly fixed to the recess 23 even when vibration occurs during operation of the vehicle 10.

  Further, according to the present embodiment, the tongue piece main body 15B of the tongue piece 15 is formed so as to be deformable in the extending direction of the tongue piece 15, so that the tongue piece 15 with respect to the load in the extending direction of the tongue piece 15 By deforming the piece main body 15B in the extending direction, the stress is prevented from being applied to the main body 14, and the deformation of the main body 14 is prevented.

  Further, according to the present embodiment, since the outer panel 21 is formed of a material having a higher dielectric constant than the inner panel 22, the wavelength of the radio wave incident on the outer panel 21 by the outer panel 21 having a higher dielectric constant. Since the antenna body 13 can receive this radio wave without reducing the reception level, the reception performance of the antenna body 13 can be improved. Further, since the wavelength of the incident radio wave is shortened by the outer panel 21, the length of the main body 14 that receives the radio wave can be shortened, and the antenna body 13 can be downsized.

  Although one embodiment of the present invention has been described, the present invention is not limited to this. For example, in the present embodiment, the antenna body 13 is an antenna that receives AM / FM radio broadcasts, but is not limited thereto, and may be an antenna that receives TV broadcasts, or may be transmitted from a satellite. It may be an antenna that receives a satellite broadcast or an antenna that receives a GPS signal.

Further, in the present embodiment, the case where the antenna body 13 is arranged on the trunk lid 12 of the vehicle 10 has been described. However, it is a matter of course that the vehicle body panel formed of a resin material can be mounted at an appropriate place. Further, it may be configured to be embedded in a roof top panel, a bumper, or a fender panel.
In the present embodiment, the antenna body 13 includes a tongue piece 15, and the tongue body 15 is inserted into the opening 24 formed in the side surface 23 </ b> A of the recess 23, thereby locking the antenna body 13 in the recess 23. For example, the antenna body 13 may be fixed to the recess 23 via a fixing tool such as a screw or a clip. Alternatively, the antenna body 13 may be fixed to the recess 23 by insert formation. .

It is a perspective view which shows the rear part of a motor vehicle. It is a sectional side view of a vehicle antenna structure. It is a disassembled perspective view of a vehicle antenna structure. It is a top view which shows an antenna body and an inner surface panel in the state which removed the outer surface panel. It is a top view which shows the latching structure of an antenna body. It is a fragmentary sectional view which shows the state which attached the antenna body to the recessed part. It is a fragmentary sectional view which shows the modification of FIG. It is a fragmentary sectional view which shows another modification of FIG.

Explanation of symbols

10 Automobile (vehicle)
11 Trunk room 12 Trunk lid (body panel)
13 Antenna body 14 Body (antenna body)
14A Positioning hole 15 Tongue piece 15A Base end part 15B Tongue piece body (base part)
18 oblique side portion 19 deformation hole portion 19A hole 19B opening 21 outer panel 22 inner panel 23 recess 23A side surface 23B bottom surface 24 opening 25 boss (boss portion)
30 Reinforcing plate 40 Wall 50 Vehicle antenna structure

Claims (3)

In the vehicle antenna structure provided with the antenna body in the vehicle body panel,
The vehicle body panel is formed by an outer surface panel and an inner surface panel disposed inside the outer surface panel, a recess is provided in the inner surface panel, the antenna body is disposed in the recess, and the inner surface panel and the antenna body are Covered with the outer panel ,
The antenna body includes a flat plate-shaped antenna body in which positioning holes are formed and tongue pieces extending from both ends of the antenna body, and the tongue pieces are elastically deformed to be formed on the side surface of the recess. A vehicle antenna , wherein the antenna body is locked to the recess by a restoring force of the tongue piece, and the positioning hole is fitted into a boss formed on the bottom surface of the recess. Construction. The base of the tongue, the vehicle antenna structure according to claim 1, characterized in that it is deformably formed in the extending direction of the tongue. 3. The vehicle antenna structure according to claim 1, wherein the outer panel is made of a material having a higher dielectric constant than the inner panel.

Images