JP2009077101A - Antenna device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an antenna device for vehicle which is capable of securing a good electric wave reception state while preventing the reduction of a living space in a vehicle. <P>SOLUTION: An opening extending in a breadthwise direction of the vehicle, which is formed in a metallic vehicle body A on the upper edge side of a rear window glass 36, is covered with a resin garnish 10, and antennas 31 and 32 are disposed in a vehicle body space R between the garnish 1-and a resin trim 29. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an automobile antenna device having an antenna built in a vehicle body space.

  Currently, vehicles are provided with antenna devices for receiving various broadcast waves such as AM radio broadcast waves, FM radio broadcast waves, TV (UHF band and VHF band) broadcast waves, VICS, and the like.

In Patent Document 1, the interior of a metal front pillar that constitutes a car body of an automobile is covered with a resin part as an interior material, and a film-like antenna is arranged in an internal space between the front pillar and the resin part. A technique for receiving various broadcast waves is disclosed.
JP 7-58535 A

  However, in the antenna device of Patent Document 1, since the antenna is disposed in the vicinity of the metal front pillar, radio wave interference may occur, which may adversely affect radio wave reception. Here, it is conceivable that the antenna and the front pillar are sufficiently separated from each other, but in this case, the interior material of the vehicle interior must be enlarged, and the living space in the vehicle interior becomes narrow and the comfortability decreases. Therefore, it is not preferable.

  The present invention has been made in view of such a point, and an object of the present invention is to provide an automobile capable of ensuring a good radio wave reception state while suppressing the narrowing of the living space in the vehicle interior and improving the comfortability. An antenna device is provided.

  In order to achieve the above-described object, according to the present invention, an opening formed in a metal vehicle body is covered with a resin garnish, and an antenna is disposed inside the garnish.

  Specifically, the present invention is directed to an automobile antenna device having a built-in antenna in a vehicle body space, and the following solution is taken.

  That is, according to the first aspect of the present invention, an opening extending in the vehicle width direction is formed on the metal vehicle body on the upper edge side of at least one of the rear window glass and the front window glass so as to cover the opening. A resin-made plate-shaped garnish is attached to the outside of the vehicle body, the antenna is disposed on the vehicle interior side of the garnish corresponding to the opening, covers the antenna and the opening, and is between the garnish and the garnish A resin trim is attached to the vehicle body so as to have a vehicle body space.

  The invention of claim 2 is characterized in that, in claim 1, the antenna is composed of a conductive wire extending in the vehicle width direction.

  According to a third aspect of the present invention, in the first aspect, the antenna is formed in a film shape.

  According to a fourth aspect of the present invention, in the first aspect, the garnish is formed by joining an inner garnish inner and an outer garnish outer so as to have an internal space, and the antenna includes the garnish inner and the garnish. It is arranged on the inner space side of at least one of the outer parts.

  According to the first aspect of the present invention, the opening formed in the metal vehicle body is covered with the resin garnish, and the antenna is disposed in the vehicle body space between the garnish and the resin trim. Therefore, it is possible to maintain a good reception state of the antenna while widening the living space in the vehicle interior and improving the comfortability. That is, in the present invention, since the antenna is disposed on the vehicle interior side corresponding to the opening of the resin garnish covering the opening of the metal vehicle body, the metal vehicle body exists in front of and behind the antenna. Thus, an antenna device free from radio interference by a metal vehicle body can be obtained. In addition, the vehicle body space portion only needs to secure a space for arranging the antenna in the vehicle body space portion without considering the radio wave interference caused by the metal vehicle body. This living space can be secured widely without becoming narrow. Further, in the present invention, since the antenna is disposed by effectively using the vehicle body space at the upper edge of the rear window glass or the front window glass, the antenna is at a high position in the vehicle body and the reception sensitivity is good.

  According to the invention which concerns on Claim 2 or 3, the antenna apparatus of a motor vehicle can be comprised using the electroconductive wire which extends in a vehicle width direction, or a film-like antenna.

  According to the invention of claim 4, the garnish is formed by joining the garnish inner on the vehicle inner side and the garnish outer on the vehicle outer side so as to have an internal space, and the antenna is disposed on the internal space side. The metal vehicle body in the vicinity of the part can be reinforced with garnish.

  In addition, for example, when the support rib for attaching the antenna is formed integrally with the garnish outer, distortion and sink marks may occur on the opposite surface of the place where the support rib is integrally formed, and the appearance of the garnish surface may be deteriorated. However, as in the present invention, since the garnish is integrally joined with the garnish inner and the garnish outer, if the support rib is integrally formed only on the garnish inner, distortion and sink marks are generated on the outer surface of the garnish vehicle. It improves the appearance.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be noted that the following description of the preferred embodiment is merely an exemplification, and is not intended to limit the present invention.

<Embodiment 1>
1 is a perspective view of a vehicle B equipped with an antenna device according to Embodiment 1 of the present invention as viewed from the rear side of a vehicle body A, FIG. 2 is a sectional view taken along line II-II in FIG. 1, and FIG. 4 is a plan view for explaining the arrangement of antennas 31 and 32 in a part R. FIG. As shown in FIG. 1, the automobile B is a so-called sedan type vehicle having a trunk lid T at the rear of a vehicle body A.

  As shown in FIGS. 1 to 3, in the vehicle body A, a metal outer panel 1 and a metal inner panel 3 each having an opening 5 for a rear window glass are integrally coupled. And the peripheral part of the rear window glass 36 is adhere | attached with the adhesive material 6 for glass on the periphery of the opening part 5 in the outer panel 1, and the opening part 5 is obstruct | occluded.

  Further, the outer panel 1 and the inner panel 3 on the upper edge side of the opening 5 are formed with an opening 8 for antenna arrangement extending in the vehicle width direction. A resin-made plate-like garnish 10 is attached to the outer side of the outer panel 1 so as to cover the opening 8. The garnish 10 includes a garnish main body 11 that covers the opening 8, a support rib 13 that stands on the vehicle interior side from a surface corresponding to the opening 8 of the garnish main body 11, and supports the antennas 31 and 32 at the tip portion thereof, There are six fastening bolts 12, 12,... Arranged at intervals on the periphery of the inner surface (inner side) of the garnish main body 11. Here, the support rib 13 and the fastening bolt 12 of the garnish body 11 are integrally formed by injection molding. Thereby, the number of parts can be reduced and cost reduction can be realized.

  Through holes 1 a and 3 a are formed in the outer panel 1 and the inner panel 3 of the vehicle body A at positions corresponding to the fastening bolts 12 provided in the garnish 10. The fastening bolt 12 is inserted into the through holes 1a and 3a, and the fastening nut 15 is fastened to the tip of the fastening bolt 12 protruding from the inner panel 3, so that the garnish 10 covers the opening 8. It is attached to A. Further, a waterproof sealing material 16 is sandwiched between the outer panel 1 of the vehicle body A and the garnish 10 so that rainwater or dust does not enter the vehicle interior from the opening 8.

  Further, a resin trim 29 as an interior material is attached to the vehicle interior side of the vehicle body A so as to cover the antennas 31 and 32 and the opening 8 and to have a vehicle body space portion R between the vehicle body A and the garnish 10. Yes.

  Next, the antennas 31 and 32 disposed in the vehicle body space R will be described. As shown in FIG. 4, the vehicle B receives radio (FM, AM broadcast), TV broadcast radio waves, VICS (Vehicle Information and Communication System) and the like, and receives the received signal as a tuner 40. An antenna device is provided for guiding to an information communication device 41 such as a car navigation system, a radio, and a television in the vehicle interior.

  This antenna device includes a low frequency band antenna for receiving a broadcast wave in a low frequency band. Specifically, the low frequency band antenna includes a VICS band antenna 31 for receiving radio FM waves and VICS band radio waves having a frequency band of 76 MHz to 90 MHz, and a VHF (30 MHz to 300 MHz frequency band). It is composed of a low VHF band antenna 32 for receiving a low VHF charged wave such as 1CH to 3CH of a TV broadcast wave that is a frequency band of 88 MHz to 108 MHz among radio waves in a very high frequency band. . The dimensions of these antennas 31 and 32 are set in relation to the frequency of the reception target medium.

  As shown in FIG. 2 and FIG. 3, the VICS band antenna 31 and the low VHF band antenna 32, which form the low frequency band antenna, are made of a linear conductive wire rod made of stainless steel and having a wire diameter of about 3 mm. A are arranged side by side in the front-rear direction and the vertical direction of A, and are arranged in the vehicle body space R so as to extend in the vehicle width direction.

  Further, a connector terminal 26 to which one end of the shield wire 25 is connected is attached to one end (the left end in FIG. 3) of both antennas 31 and 32, respectively. The shield wire 25 is used to guide a received signal to an information communication device 41 such as a car navigation system, a radio, and a television in a vehicle interior via a tuner 40. A thin metal lead wire is provided around the covered internal lead wire 25a. It is comprised with the coaxial cable which is wrapped with the outer conducting wire 25b which becomes and further provided with an outer sheath. The external conductor 25b prevents electromagnetic and electrostatic noise from the outside from entering the internal conductor 25a.

  Further, the outer conductive wire 25b is peeled off and the internal conductive wire 25a is exposed at the tip of the shield wire 25 on the connector terminal 26 side, and the internal conductive wire 25a and the connector terminal 26 are brazed to form a connector. The terminal 26 is connected.

  The shield wires 25 wired from the antennas 31 and 32 are bundled as one connection wire to be connected to the tuner 40, and then routed along the ceiling C (see FIG. 1) into the vehicle interior. .

  The connector terminal 26, the internal conductor 25a, the external conductor 25b, the fastening bolt 12, and the fastening nut 15 are covered and hidden by the trim 29 in the vehicle interior so that they cannot be seen from the vehicle interior. Will improve.

  Both antennas 31 and 32 are arranged such that the rear low VHF band antenna 32 is positioned below the front VICS band antenna 31 in the vertical direction, but conversely, the low VHF band antenna 32 may be disposed above the VICS band antenna 31. In short, both antennas 31 and 32 may be arranged side by side separated in at least one of the longitudinal direction of the vehicle body and the vertical direction so as not to cause radio wave interference. Hereinafter, the arrangement of the antennas 31 and 32 will be described.

  As shown in FIG. 2, on the inner surface of the garnish main body 11, support ribs 13 and 13 projecting toward the trim 29 so as to extend in the vehicle width direction are arranged at intervals in the vertical direction and the front-rear direction. ing.

  A VICS band antenna 31 is placed at the tip of the upper support rib 13, and a low VHF band antenna 32 is placed at the tip of the lower support rib 13. As shown in FIG. 3, both the antennas 31 and 32 are held by a clip 27 so as not to drop from the tip end portion of the support rib 13. The clip 27 is formed by bending a spring wire, and the gap at the tip is formed smaller than the plate thickness of the support rib 13 in the form before the clip 27 is attached to the support rib 13.

  Then, the gap between the tip portions of the clip 27 is widened against the elastic force, and is pushed into the both antennas 31 and 32 mounted on the tip portions of the support ribs 13 and 13, whereby both the antennas 31 and 32 are pressed. Is held by the clip 27 so that it does not fall off from the front ends of the support ribs 13. Four clips 27 are attached to both antennas 31 and 32 at intervals in the vehicle width direction.

  Hereinafter, a procedure for arranging the antennas 31 and 32 in the vehicle body space R will be described. First, the antennas 31 and 32 are placed on the projecting side end portions of the support ribs 13 that stand integrally with the garnish 10. Thereafter, as described above, the support ribs 13 and 13 are held between the tips of the clip 27, and the antennas 31 and 32 are held on the support rib 13 by the clip 27. As a result, both antennas 31 and 32 do not fall off from the protruding end of the support rib 13.

  Next, with the sealing material 16 sandwiched between the outer peripheral edge of the garnish main body 11 and the opening edge of the opening 8, the fastening bolts 12 protruding from the garnish main body 11 toward the vehicle inner side are connected to the outer panel 1 of the vehicle body A and The through-holes 1 a and 3 a formed in the inner panel 3 are inserted into the inner panel 3, and the tip portions thereof are projected from the inner panel 3. Then, the fastening nut 15 is screwed onto the fastening bolt 12 to attach the garnish 10 to the vehicle body A.

  And the connector terminal 26 is connected to one end of the antennas 31 and 32, and the other end of the shield wire 25 is connected to the connector terminal (not shown) of the information communication equipment 41 in the vehicle interior. Thereafter, the trim 29 is attached to the vehicle body A from the inside of the vehicle to form the vehicle body space R. Thus, the antennas 31 and 32 are disposed in the vehicle body space R, and the reception signals received by the antennas 31 and 32 can be transmitted to the information communication device 41.

  As described above, according to the antenna apparatus for an automobile according to the first embodiment, the opening 8 formed in the metal vehicle body A on the upper edge side of the rear window glass 36 is covered with the resin garnish 10, and the garnish 10 Since the antennas 31 and 32 are disposed in the vehicle body space R between the resin trim 29, the reception state of the antennas 31 and 32 is improved while widening the living space in the vehicle interior and improving the comfort. Can keep good. That is, in the present invention, since the antennas 31 and 32 are disposed on the vehicle interior side corresponding to the opening 8 of the resin garnish 10 covering the opening 8 of the metal vehicle body A, the front of the antennas 31 and 32 and There is no metal vehicle body A behind, and an antenna device free from radio wave interference by the metal vehicle body A can be obtained. Further, the vehicle body space portion R only needs to secure a space for arranging the antennas 31 and 32 in the vehicle body space portion R without considering the radio wave interference caused by the metal vehicle body A. Therefore, the living space in the vehicle compartment is not narrowed, and this living space can be secured widely. In the present invention, since the antennas 31 and 32 are disposed by effectively using the vehicle body space R at the upper edge of the rear window glass 36, the antennas 31 and 32 are at a high position in the vehicle body A, and the reception sensitivity is also good. It is.

  In the first embodiment, the garnish 10 is attached to the so-called sedan type vehicle body A. However, the present invention is not limited to this configuration, and the tailgate portion opened at the rear portion of the vehicle body A can be opened and closed. You may make it attach the garnish 10 to the vehicle body of the upper edge side of the wagon type rear window glass which has a door.

  Further, although the shield wires 25 of the antennas 31 and 32 are wired along the ceiling C of the vehicle body A, they may be wired through the internal space of the rear pillar and the rear pillar trim that covers the rear pillar from the vehicle interior side.

  Further, the configuration in which the garnish 10 is attached to the vehicle body A on the upper edge side of the rear window glass 36 and the antennas 31 and 32 are disposed has been described. However, the antenna 31 is attached to the vehicle body on the upper edge side of the front window glass (not shown). , 32 may be provided.

  Further, when the garnish 10 is attached to the vehicle body A, the fastening bolts 12 formed integrally with the garnish 10 are used to fasten with the fastening nuts 15, but the present invention is not limited to this configuration, and the fastening bolts are attached to the garnish 10. The garnish 10 may be joined to the vehicle body A by an adhesive without providing the garnish 12.

  Moreover, although the two antennas 31 and 32 are arrange | positioned in the vehicle body space part R, the number and kind of this antenna are not limited to this embodiment. Although the VICS band antenna and the low VHF band antenna have been described as the types of the antennas 31 and 32, for example, an AM antenna or an FM antenna may be used. Furthermore, although the case where the antennas 31 and 32 comprised by the conductive wire material extended in a vehicle width direction was used was demonstrated, you may make it affix the antenna formed in the film shape on the inner surface of the garnish 10. FIG.

<Embodiment 2>
FIG. 5 is a cross-sectional view corresponding to FIG. 2 showing the configuration of the antenna device according to Embodiment 2 of the present invention. The difference from the first embodiment is that the garnish 20 is configured by joining a garnish inner 21 on the vehicle inner side and a garnish outer 22 on the vehicle outer side so as to have an internal space S. The same parts are denoted by the same reference numerals, and only different points will be described.

  As shown in FIG. 5, the garnish 20 attached to the outer side of the outer panel 1 of the vehicle body A so as to cover the opening 8 has an inner space S with a garnish inner 21 on the inner side of the vehicle and a garnish outer 22 on the outer side of the vehicle. It is configured to be joined. A bulging portion 21 a that is inserted into the opening 8 and bulges toward the inside of the vehicle is formed at a substantially central portion in the vertical direction of the garnish inner 21. The bulging portion 21 a and the garnish outer 22 define the internal space S. Forming. Here, the garnish inner 21 and the garnish outer 22 are joined by an adhesive 23. In addition to joining both members with the adhesive 23, they may be joined by hot plate welding, vibration welding, high frequency welding, or the like.

  Support ribs 13 erected on the garnish outer 22 side are integrally formed on the surface on the inner space S side of the garnish inner 21 with an interval in the vertical direction. Antennas 31 and 32 are mounted on the support rib 13, one end of each of the antennas 31 and 32 is bent at a substantially right angle, and the tip thereof is the support rib 13 in the bulging portion 21 a of the garnish inner 21. Is inserted into an antenna insertion hole 21 b provided on one end side in the longitudinal direction (right side in FIG. 6) and protrudes toward the inside of the garnish inner 21. The connector terminals 26 of the shielded wires 25 are connected to the tip portions of both the antennas 31 and 32.

  Further, a plurality of fastening bolts 12 are integrally formed on the periphery of the inner surface of the garnish inner 21. Then, a fastening bolt 12 is inserted into a through hole (not shown) formed in the outer panel 1 and the inner panel 3 of the vehicle body A, and a fastening nut 15 is screwed to the tip of the fastening bolt 12 protruding from the inner panel 3. Thus, the garnish 20 is attached to the vehicle body A. Further, a seal member 16 is sandwiched between the outer panel 1 of the vehicle body A and the garnish 20 so that rainwater, dust, and the like do not enter the vehicle interior from the opening 8.

  Further, on the vehicle interior side of the vehicle body A, the garnish inner 21 of the garnish 20 is provided so as to cover the bulging portion 21 a, the opening portion 8, the fastening bolt 12, and the fastening nut 15 where the antennas 31 and 32 are attached to the internal space S. A resin trim 29 as an interior material is attached so as to have a vehicle body space R between the two.

  Hereinafter, a procedure for arranging the antennas 31 and 32 in the internal space S of the garnish 20 will be described. First, the antennas 31 and 32 are placed on the protruding side end portions of the support ribs 13 and 13 that are integrally provided on the inner space S side of the bulged portion 21a of the garnish inner 21, and the antennas 31 and 32 bent at substantially right angles. The antennas 31 and 32 are sandwiched and held by the clip 27 in a state where the leading end of the antenna is inserted into the antenna insertion hole 21b of the bulging portion 21a and protrudes to the inside of the vehicle.

  Next, the garnish 20 is assembled by joining the garnish inner 21 and the garnish outer 22 with the adhesive 23. Thereafter, with the sealing material 16 sandwiched between the outer peripheral edge of the garnish 20 and the opening edge of the opening 8, the bulged portion 21a of the garnish inner 21 is inserted into the opening 8 and the garnish 20 The fastening bolt 12 that protrudes toward the inside of the vehicle is inserted into a through-hole formed in the outer panel 1 and the inner panel 3 of the vehicle body A, the tip end portion protrudes from the inner panel 3, and the fastening nut 15 is screwed to the fastening bolt 12. Then, the garnish 20 is attached to the vehicle body A.

  And the connector terminal 26 is connected to the front-end | tip part of the antennas 31 and 32 which protruded from the vehicle inner surface of the garnish inner 21, and the other end of the shield wire 25 is connected to the connector terminal (not shown) of the information communication equipment 41 in the vehicle interior. Connecting. Thereafter, the trim 29 is attached to the vehicle body A from the inside of the vehicle to form the vehicle body space R. As a result, the antennas 31 and 32 are disposed in the vehicle body space R (internal space S), and reception signals received by the antennas 31 and 32 can be transmitted to the information communication device 41.

  As described above, according to the antenna apparatus for an automobile according to the second embodiment, the garnish 20 is formed by joining the garnish inner 21 on the vehicle interior and the garnish outer 22 on the vehicle exterior so as to have the internal space S. Since the antennas 31 and 32 are disposed on the inner space S side, the metal vehicle body A in the vicinity of the opening 8 can be reinforced by the garnish 20.

  Further, since the support rib 13 is formed only on the garnish inner 21 without being formed on the garnish outer 22, no distortion or sink marks are generated on the vehicle outer surface of the garnish outer 22, and the appearance is improved.

  Further, the antennas 31 and 32 are disposed in the internal space S formed by the garnish inner 21 and the garnish outer 22 in a state where the bulging portion 21a of the garnish inner 21 is inserted into the opening 8. The internal space S is located in the opening 8, that is, the opening 8 can be effectively used to reduce the width (dimension) of the vehicle body space R in the longitudinal direction of the vehicle body. The living space can be widened.

  In the second embodiment, the linear antennas 31 and 32 are attached to the support ribs 13 and 13 of the garnish inner 21, but in addition to this, a film antenna may be attached to the inner surface of the garnish outer 22.

  As described above, the present invention can provide an automobile antenna device capable of ensuring a good radio wave reception state while suppressing the narrowing of the living space in the passenger compartment and improving the comfortability. Therefore, it is extremely useful and has high industrial applicability.

It is the perspective view of the state which looked at the motor vehicle provided with the antenna apparatus which concerns on Embodiment 1 of this invention from the vehicle body back side. It is sectional drawing which shows the structure of the vehicle body space part in the II-II line of FIG. It is a top view which shows arrangement | positioning of the antenna in a vehicle body space part. It is a schematic diagram which shows the state which connected the antenna to the information communication equipment. It is FIG. 2 equivalent drawing of the antenna apparatus in Embodiment 2 of this invention. FIG. 6 is a cross-sectional view of the vicinity of the right end in the vehicle width direction of the support rib to which the antenna in the VI-VI line of FIG. 5 is attached.

Explanation of symbols

8 Opening 10,20 Garnish 21 Garnish Inner 22 Garnish Outer 29 Trim 31 VICS Band Antenna (Antenna)
32 Low VHF band antenna (antenna)
36 Rear window glass A Car body B Car R Car body space S Internal space

Claims (4)

An automobile antenna device having an antenna built in a vehicle body space,
An opening extending in the vehicle width direction is formed in the metal vehicle body on the upper edge side of at least one of the rear window glass and the front window glass,
A resin-made plate-like garnish is attached to the outside of the vehicle body so as to cover the opening,
The antenna is disposed inside the garnish corresponding to the opening,
An automobile antenna device, wherein a trim made of resin is attached to the vehicle body so as to cover the antenna and the opening and to have the vehicle body space portion between the antenna and the garnish. In claim 1,
The antenna device for an automobile, wherein the antenna is made of a conductive wire extending in a vehicle width direction. In claim 1,
The antenna device for an automobile, wherein the antenna is formed in a film shape. In claim 1,
The garnish is configured by joining a garnish inner on the vehicle inner side and a garnish outer on the vehicle outer side so as to have an internal space,
The automobile antenna device according to claim 1, wherein the antenna is disposed on the inner space side of at least one of the garnish inner and the garnish outer.

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