WO2012046524A1 - アンテナユニット - Google Patents
アンテナユニット Download PDFInfo
- Publication number
- WO2012046524A1 WO2012046524A1 PCT/JP2011/069789 JP2011069789W WO2012046524A1 WO 2012046524 A1 WO2012046524 A1 WO 2012046524A1 JP 2011069789 W JP2011069789 W JP 2011069789W WO 2012046524 A1 WO2012046524 A1 WO 2012046524A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- base
- outer case
- antenna unit
- side fitting
- case
- Prior art date
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
- H01Q1/422—Housings not intimately mechanically associated with radiating elements, e.g. radome comprising two or more layers of dielectric material
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/32—Adaptation for use in or on road or rail vehicles
- H01Q1/325—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle
- H01Q1/3275—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle mounted on a horizontal surface of the vehicle, e.g. on roof, hood, trunk
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
Definitions
- the present invention relates to an antenna unit suitable for use in installation on the roof of an automobile body.
- the in-vehicle antenna unit installed on the vehicle roof is roughly divided into a single case structure and a double case structure.
- one case fulfills both the waterproof function of the antenna element and the function as a painted outer case.
- it is necessary to paint the case according to the paint color of the vehicle.
- it is necessary to store a quantity of antenna units corresponding to the number of set colors of the vehicle as stock in the factory, and the stock on the production line Squeeze space.
- the double case structure has an inner case and an outer case that cover the antenna element, and the outer case is painted to match the paint color of the vehicle. Only the outer case corresponds to the number of set colors of the vehicle. Just prepare something.
- Patent Document 1 and Patent Document 2 as antenna units having a double case structure.
- Patent Document 1 and Patent Document 2 both have a structure in which an outer case serving as an exterior is fitted and attached to the outside of an inner case mounted on an antenna base. For this reason, when considering the gap between the outer case and the vehicle body roof that is the mounting surface on which the antenna unit is mounted, the cumulative tolerance of the inner case dimensional tolerance and the outer case dimensional tolerance is the gap between the outer case and the roof. It will affect the variation of.
- the cumulative tolerance of the inner case dimensional tolerance and the outer case dimensional tolerance is the roof and outer case as the mounting surface.
- the gap between the roof and the outer case may not be ignored when the accumulated tolerance is large.
- the present invention has been made in view of such a situation, and the object of the present invention is to provide a structure in which an outer case as an exterior is directly attached to a base to which an inner case is attached.
- An object of the present invention is to provide an antenna unit capable of reducing the above.
- Another object of the present invention is to provide an antenna unit having a structure in which the outer case can be securely fitted to the base and the outer case is unlikely to come off.
- an antenna unit includes a base, an antenna element disposed on the base, an inner case that covers the antenna element and is fixed to the base, and And an outer case that covers the inner case and is attached to the base.
- the base integrally includes a base-side fitting portion
- the outer case integrally includes an outer case-side fitting portion
- the outer case-side fitting portion is spaced from the inner wall surface of the outer case. It is possible to adopt a configuration in which the base side fitting portion is fitted on the inner side with a gap therebetween.
- the base-side fitting portion has a locking convex portion at a tip portion of a standing portion rising from the bottom surface portion of the base, and the outer case-side fitting portion is formed from the inner wall surface of the outer case.
- a main piece portion extending downward, and a sub piece portion connected to the main piece portion at a lower end portion, wherein the lower end portion serves as a fulcrum of bending of the sub piece portion, and an upper end of the sub piece portion
- the portion may have a locking claw protruding to the side of the main piece portion, and the locking claw may be locked by the locking projection.
- the sub piece may be formed inside an opening provided in the main piece.
- the base has a restricting portion that faces the upright portion with the outer case side fitting portion interposed therebetween, and the restricting portion is in a position that restricts a bending amount of the main piece portion.
- a tapered surface may be formed on the upper portion of the standing portion and the upper portion of the restricting portion so that the thickness increases downward.
- the base side fitting portion and the outer case side fitting portion are provided at two locations on the first straight line, respectively, and at two locations on the second straight line orthogonal to the first straight line. May also be provided.
- the outer case has a projecting piece portion that extends inward from the inner wall surface, and the projecting piece portion is pressed against the lower surface side of the base by rotating the outer case by a predetermined angle with respect to the base.
- the structure made into may be sufficient.
- the base may have a power supply cylindrical portion protruding from the lower surface, and may be fixed to the mounting surface with a first seal member surrounding the power supply cylindrical portion interposed.
- the inner case may be fixed to the base with a second seal member surrounding the arrangement space of the antenna element on the base interposed.
- the outer case serving as the exterior is directly attached to the base to which the inner case is attached, variation in the gap between the outer case and the mounting surface can be reduced, The gap can be substantially eliminated or controlled to a negligible size.
- the outer case can be securely fitted to the base, and the outer case is not easily detached by vibration, impact or the like. It is possible.
- 1 is an embodiment of an antenna unit according to the present invention, and is a front cross-sectional view partially showing an enlarged view.
- it is an expanded sectional view which shows the detail of a base side fitting part and an outer case side fitting part.
- It is the perspective view which looked at the outer case in embodiment from the lower surface side.
- it is a top view showing a base and an inner case with a solid line for convenience of explanation.
- (A) is a bottom view showing a state immediately after fitting and mounting the outer case to the base, and (B) is rotating (twisting) the outer case with respect to the base, It is a bottom view which shows the state which pressed the protrusion part of the outer case against the base lower surface side. In embodiment, it is an expansion perspective view of the state which pressed the protruding piece part of the outer case against the base lower surface side.
- an antenna unit 1 includes a base 10 made of aluminum die casting or zinc die casting, antenna elements 20 and 30 disposed on the base 10, and a base covering the antenna elements 20 and 30. 10, and an outer case 50 that covers the inner case 40 and is attached (fixed) to the base 10.
- the antenna unit 1 has a double case structure having an inner case 40 and an outer case 50.
- the base 10 is integrally provided with a rib 12 defining a part of the antenna element arrangement space S on the upper surface side of the bottom surface portion 11 and a feeding cylindrical portion 13 protruding from the center of the lower surface. Further, an annular groove 14 for arranging an O-ring 60 as a seal member is formed on the lower surface of the bottom surface portion 11 so as to surround the power feeding cylindrical portion 13 inside the outer periphery.
- the base 10 has a locking projection 16 integrally at the tip of the standing portion 15 rising from the bottom surface portion 11 as a base-side fitting portion, and a restricting portion 17 facing the standing portion 15. It has one.
- a convex portion 18 is integrally formed on the upper side of the bottom surface portion 11 at the outer position of the rib 12, and a female screw boss 19 for attaching the inner case 40 is formed on the convex portion 18. (It is assumed that a self-tapping screw is used as the screw 45 described later).
- antenna elements 20 and 30 are arranged.
- the antenna elements 20 and 30 are antenna elements using, for example, a patch antenna.
- the antenna element 20 is for XM satellite radio, and the antenna element 30 is for GPS.
- the antenna elements 20, 30 are fixed to the base 10 with screws 21, 31, and the feed lines 22, 32 connected to the antenna elements 20, 30 are exposed to the outside through the inside of the feeding tubular portion 13. Has been pulled out.
- the inner case 40 is made of a resin that transmits radio waves. After the antenna elements 20 and 30 are attached to the base 10, the inner case 40 is fixed to the base 10 with screws 45 in FIGS. 3 and 5 so as to cover the antenna elements 20 and 30. 45 is screwed into the female screw boss 19 while cutting a screw groove. At this time, an O-ring 46 as a seal member is disposed on the bottom surface portion 11 of the base 10 so as to surround the outer side of the rib 12, and the lower edge of the inner case 40 is pressed against the O-ring 46. That is, a watertight space surrounded by the base 10 and the inner case 40 is formed by fixing the inner case 40 to the base 10 with the O-ring 46 surrounding the antenna element arrangement space S on the base 10 interposed. .
- the antenna element 20, 30 and the inner case 40 are attached to the base 10 (before the outer case 50 is attached) and attached to the vehicle body roof 5 as an attachment.
- the base 10 is performed by inserting a power feeding cylindrical portion 13 into a mounting hole 6 provided in the roof 5 and screwing a nut (not shown) to a male screw 13 a formed on the outer periphery of the power feeding cylindrical portion 13. .
- the O-ring 60 disposed in the annular groove 14 surrounds the feeding cylindrical portion 13 and is interposed between the base 10 and the upper surface of the roof 5 serving as the mounting surface, so that the periphery of the mounting hole 6 is obtained. Can be sealed watertight.
- the outer case 50 is made of a resin that allows radio waves to pass through, and is painted in the same color as the vehicle body roof 5.
- the outer case 50 has a side surface portion 51 and a ceiling portion 52 that surround the outer edge of the base 10, and extends downward (hangs down) from the ceiling surface (inner wall surface) of the ceiling portion 52.
- a main piece 53 and a sub piece 54 are integrally formed as outer case side fitting portions.
- the main piece portion 53 and the sub piece portion 54 have flexibility.
- the main piece portion 53 is located on the inner side with a space U from the inner wall surface of the side surface portion 51 so that an impact from the outside to the outer case 50 is not directly applied to the main piece portion 53.
- the sub-piece portion 54 is formed inside the opening 55 provided in the main piece portion 53, and is connected to the main piece portion 53 at the lower end portion. Becomes a fulcrum of bending of the sub-piece portion 54, and the upper end portion of the sub-piece portion 54 has a large thickness, and is a locking claw protruding to the locking projection 16 side (inside) on the side of the main piece portion 53. 54a.
- the locking projection 16 formed at the tip of the standing portion 15 on the base 10 side protrudes to the side where the locking claw 54a is located (outside), and the regulating portion 17 includes the main piece 53 and the sub-piece. It faces the upright portion 15 with the portion 54 interposed therebetween, and the restricting portion 17 is in a position to limit the amount of bending of the main piece portion 53.
- Tapered surfaces 15a and 17a are formed on the upper portion of the standing portion 15 and the upper portion of the restricting portion 17 so that the thickness increases downward. Both the tapered surfaces 15a and 17a face the main piece portion 53 and function as guide surfaces that allow the main piece portion 53 to be smoothly inserted.
- the outer case 50 has a side portion 51.
- a plurality of elastic projecting pieces 56 extending inward from the lower edge of the inner wall surface are provided.
- FIG. 6 the example which provided the protrusion piece part 56 in four places is shown.
- the outer case 50 when the outer case 50 is attached to the base 10, the outer case 50 is attached so that the projecting piece 56 does not interfere with the base 10, and thereafter, as shown in FIG. 6B.
- the outer case 50 is rotated by a predetermined angle with respect to the base 10, and the projecting piece 56 is pressed against the lower surface portion W of the base 10.
- the lower surface portion W is a corner portion of the bottom surface of the restricting portion 17 formed integrally with the base 10 so as to extend from the bottom surface portion 11 so as to surround the standing portion 15.
- the rotation amount of the outer case 50 is defined by the stopper rib 57 protruding inward from the inner wall surface of the side surface portion 51 of the outer case 50 coming into contact with the stopper portion 101 formed on the outer edge of the base 10.
- the lowering of the outer case 50 caused by pressing the projecting piece 56 against the lower surface portion W is regulated, for example, by supporting the ceiling portion 52 of the outer case 50 against the upper surface of the inner case 40.
- the base 10 lower surface portion W with which the projecting piece portion 56 abuts is a tapered surface that is inclined downward as the rotation amount (twist amount) of the outer case 50 increases.
- the base side fitting portion (standing portion 15 and locking projection 16) and the outer case side fitting portion (main piece portion 53 and sub piece portion 54) are on the first straight line J. Are also provided at two locations on the second straight line K orthogonal to the first straight line J, respectively.
- the fitting between the two base-side fitting portions and the outer case-side fitting portion on the straight line K perpendicular to this is stably maintained.
- the fitting between the two base-side fitting portions and the outer case-side fitting portion on the straight line J is stably maintained.
- an external force that sandwiches the outer case 50 from both sides in the straight line K direction is applied, a force is generated to spread the side surface parts 51 outward in the straight line J direction.
- the fitting with the joint portion may become unstable, the fitting between the two base side fitting portions and the outer case side fitting portion on the straight line K is stably maintained.
- the outer case 50 only needs to be fitted to the base 10, the outer case 50 can be easily mounted, and the outer case 50 can be securely fitted to the base 10. It is possible to prevent it from easily coming off due to vibration, impact, or the like.
- both patent documents 1 and 2 have a simple claw structure, and when the base of the claw is bent by an external force, the claw is easily detached.
- the base side fitting portion (the standing portion 15 and the locking projection 16) and the outer case side fitting portion. (Main piece portion 53 and sub piece portion 54) are provided at two locations on the first straight line J and at two locations on the second straight line K orthogonal to the first straight line J, respectively. Even if the outer case 50 is distorted or deformed when the external force is applied, it is possible to ensure that the two fitting portions continue to be fitted.
- the locking claws are arranged symmetrically with respect to a straight line, and the locking claws are easily detached by an external force in a direction orthogonal to the straight line.
- the outer case 50 has a plurality of projecting piece portions 56 extending inward from the lower edge of the inner wall surface of the side surface portion 51, and the outer case 50 is rotated by a predetermined angle with respect to the base 10 to project the projecting piece portion 56. Can be pressed against the lower surface side of the base 10. With this structure, the outer case 50 is pulled down to the base 10 side to prevent the outer case 50 from being lifted from the base 10 due to distortion or deformation of the outer case 50, and the gap between the outer case 50 and the upper surface of the roof 5 is prevented. It can be kept small enough.
- the case 50 may be attached last as an external part. In this case, it is sufficient to prepare only a variety of outer cases 50 according to the vehicle type, paint color, and the like.
- the antenna elements 20 and 30 in the embodiment are both antennas called patch antennas, but the antenna elements are not limited to this, and are for other FM radios and terrestrial digital televisions. It may be a thing. In that case, since the antenna shape is different from that using a patch antenna, it uses a helical antenna or a planar antenna, and accordingly, the appearance of the inner case and the outer case also changes.
- the outer case 50 in order to prevent the outer case 50 from being lifted off from the base 10, the outer case 50 is provided with protruding pieces 56 having elasticity at a plurality of locations, and pushed to the lower surface side of the base 10 by a predetermined amount of rotation.
- the outer case 50 may be slid with respect to the base 10 and the projecting piece 56 having elasticity may be pressed against the lower surface side of the base 10.
- the group of the part and the outer case side fitting part is arranged in line symmetry.
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Abstract
Description
すなわち、A:ベース単品寸法公差、B:インナーケース単品寸法公差、C:アウターケース単品寸法公差、X:隙間寸法累積公差としたとき、特許文献1ではアウターケースをインナーケースに取り付けているため、隙間寸法累積公差Xは下記の式の通りとなる。
X=A+B+C
一方、本発明の実施の形態では、下記の式の通りとなる。
X=A+C
インナーケース単品寸法公差Bが無い分、累積公差Xが小さくなり、アウターケース50とルーフ5の上面との隙間を実質的に無くするか、あるいは無視できる大きさに管理することができる。
5 車体ルーフ
10 ベース
11 底面部
12 リブ
13 給電用筒状部
14 環状溝
15 立設部
15a,17a テーパー面
16 係止凸部
17 規制部
20,30 アンテナ素子
40 インナーケース
46,60 Oリング
50 アウターケース
53 主片部
54 副片部
54a 係止爪
55 開口
56 突片部
S アンテナ素子配置空間
Claims (9)
- ベースと、前記ベース上に配設されるアンテナ素子と、前記アンテナ素子を覆って前記ベースに固定されるインナーケースと、前記インナーケースを覆って前記ベースに装着されるアウターケースとを備える、アンテナユニット。
- 請求項1に記載のアンテナユニットにおいて、前記ベースはベース側嵌合部を一体に有するとともに、前記アウターケースはアウターケース側嵌合部を一体に有し、前記アウターケース側嵌合部は前記アウターケース内壁面よりも空間を隔てて内側に位置して前記ベース側嵌合部に嵌合する、アンテナユニット。
- 請求項2に記載のアンテナユニットにおいて、前記ベース側嵌合部は、前記ベースの底面部から立ち上がった立設部の先端部に係止凸部を有し、
前記アウターケース側嵌合部は、前記アウターケース内壁面から下方に延びた主片部と、前記主片部に対して下端部にて繋がった副片部とを有し、前記下端部が前記副片部の撓みの支点となり、前記副片部の上端部は前記主片部の側方に突出した係止爪をなしており、前記係止爪が前記係止凸部によって係止されている、アンテナユニット。 - 請求項3に記載のアンテナユニットにおいて、前記主片部に設けられた開口の内側に前記副片部が形成されている、アンテナユニット。
- 請求項3又は4に記載のアンテナユニットにおいて、前記ベースは、前記立設部に対して前記アウターケース側嵌合部を挟んで対向する規制部を有し、前記規制部は前記主片部の撓み量を制限する位置にあり、前記立設部の上部及び前記規制部の上部には、それぞれ下方に向けて肉厚が大きくなるようにテーパー面が形成されている、アンテナユニット。
- 請求項2乃至5のいずれかに記載のアンテナユニットにおいて、前記ベース側嵌合部及び前記アウターケース側嵌合部は第1の直線上の2箇所にそれぞれ設けられるとともに、前記第1の直線に直交する第2の直線上の2箇所にもそれぞれ設けられている、アンテナユニット。
- 請求項1乃至6のいずれかに記載のアンテナユニットにおいて、前記アウターケースは内壁面より内側に延びる突片部を有し、前記アウターケースを前記ベースに対して所定角度回転させることで前記突片部を前記ベースの下面側に押し当てるようにした、アンテナユニット。
- 請求項1乃至7のいずれかに記載のアンテナユニットにおいて、前記ベースは、下面から突出する給電用筒状部を有し、前記給電用筒状部を囲む第1のシール部材を介在させて被装着面に対し固定されている、アンテナユニット。
- 請求項1乃至8のいずれかに記載のアンテナユニットにおいて、前記ベース上の前記アンテナ素子の配置空間を囲む第2のシール部材を介在させて前記インナーケースは前記ベースに固定されている、アンテナユニット。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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US13/877,698 US9799951B2 (en) | 2010-10-08 | 2011-08-31 | Antenna unit |
CN201180048746.4A CN103155282B (zh) | 2010-10-08 | 2011-08-31 | 天线单元 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2010-228551 | 2010-10-08 | ||
JP2010228551A JP5444183B2 (ja) | 2010-10-08 | 2010-10-08 | アンテナユニット |
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WO2012046524A1 true WO2012046524A1 (ja) | 2012-04-12 |
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PCT/JP2011/069789 WO2012046524A1 (ja) | 2010-10-08 | 2011-08-31 | アンテナユニット |
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US (1) | US9799951B2 (ja) |
JP (1) | JP5444183B2 (ja) |
CN (1) | CN103155282B (ja) |
WO (1) | WO2012046524A1 (ja) |
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JP6700659B2 (ja) * | 2014-12-13 | 2020-05-27 | 株式会社ヨコオ | アンテナ装置 |
DE102015202801A1 (de) | 2015-02-17 | 2016-08-18 | Robert Bosch Gmbh | Antennenanordnung und Verfahren zum Herstellen einer Antennenanordnung |
US9868408B2 (en) * | 2016-01-29 | 2018-01-16 | Ford Global Technologies, Llc | Protective cover for vehicular control module |
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JP7194044B2 (ja) * | 2019-02-26 | 2022-12-21 | 東洋電装株式会社 | 車両用アンテナ装置 |
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2010
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2011
- 2011-08-31 CN CN201180048746.4A patent/CN103155282B/zh active Active
- 2011-08-31 US US13/877,698 patent/US9799951B2/en active Active
- 2011-08-31 WO PCT/JP2011/069789 patent/WO2012046524A1/ja active Application Filing
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JP2005102031A (ja) * | 2003-09-26 | 2005-04-14 | Clarion Co Ltd | 自動車用アンテナ |
JP2005348032A (ja) * | 2004-06-02 | 2005-12-15 | Yokohama Rubber Co Ltd:The | 車載用通信アンテナ |
JP2006345083A (ja) * | 2005-06-07 | 2006-12-21 | Mitsumi Electric Co Ltd | アンテナユニット |
WO2008067034A1 (en) * | 2006-11-28 | 2008-06-05 | Laird Technologies, Inc. | Vehicle-mount antenna assemblies having snap-on outer cosmetic covers with compliant latching mechanisms for achieving zero-gap |
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Also Published As
Publication number | Publication date |
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JP5444183B2 (ja) | 2014-03-19 |
US20130265208A1 (en) | 2013-10-10 |
CN103155282B (zh) | 2017-08-04 |
CN103155282A (zh) | 2013-06-12 |
JP2012085044A (ja) | 2012-04-26 |
US9799951B2 (en) | 2017-10-24 |
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