JP2019016930A - Antenna device - Google Patents

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JP2019016930A
JP2019016930A JP2017133699A JP2017133699A JP2019016930A JP 2019016930 A JP2019016930 A JP 2019016930A JP 2017133699 A JP2017133699 A JP 2017133699A JP 2017133699 A JP2017133699 A JP 2017133699A JP 2019016930 A JP2019016930 A JP 2019016930A
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antenna
case
substrate
inner case
antenna device
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JP6991759B2 (en
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清二 郷
Seiji Go
清二 郷
拓也 遊馬
Takuya Yuma
拓也 遊馬
忍 若原
Shinobu WAKAHARA
忍 若原
真規 塚本
Masaki Tsukamoto
真規 塚本
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Yokowo Co Ltd
Toyota Motor Corp
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Yokowo Co Ltd
Toyota Motor Corp
Yokowo Mfg Co Ltd
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Abstract

To prevent an antenna element from vibrating due to a vibration of a vehicle and to prevent abnormal noise from occurring due to contact between the antenna element and an antenna case.SOLUTION: An antenna device 1 includes: a substrate 7; a thin plate-shaped antenna 30 standing thereon; and an inner case 6 as an antenna case covering the substrate 7 and the antenna 30. The inner case 6 has a groove 62 in a front-rear direction by ribs 61 protruding inward from left and right inner wall surfaces, respectively. The inner case 6 and the rib 61 are integrated. The groove 62 holds the antenna 30.SELECTED DRAWING: Figure 5

Description

本発明は、基板に立設された薄板状のアンテナ素子を有するアンテナ装置に関するものである。   The present invention relates to an antenna device having a thin plate-like antenna element standing on a substrate.

従来のこの種の車載用のアンテナ装置は、基板に立設された薄板状のアンテナ素子が基板のみにより保持されていたので、アンテナ装置が車両に取り付けられると、車両の振動によりアンテナ素子が振動してアンテナ素子がアンテナケースと接触し、異音が発生するという欠点があった。   In the conventional vehicle-mounted antenna device of this type, since the thin plate-like antenna element standing on the substrate is held only by the substrate, when the antenna device is attached to the vehicle, the antenna element vibrates due to the vibration of the vehicle. As a result, the antenna element comes into contact with the antenna case, and abnormal noise is generated.

特開2011−109296号公報 特許文献1は薄板状のアンテナ素子の下端部を基板で支持した構造を開示しているが、アンテナ素子の上端部はフリーになっている。Japanese Patent Application Laid-Open No. 2011-109296 discloses a structure in which a lower end of a thin plate antenna element is supported by a substrate, but the upper end of the antenna element is free.

本発明はこうした状況を認識してなされたものであり、その目的は、アンテナ装置が車両に取り付けられた場合に、車両の振動に起因してアンテナ素子が振動し、アンテナ素子とアンテナケースとの接触による異音が発生することを防止可能なアンテナ装置を提供することにある。   The present invention has been made in view of such a situation, and the purpose of the present invention is to cause the antenna element to vibrate due to the vibration of the vehicle when the antenna device is attached to the vehicle. An object of the present invention is to provide an antenna device capable of preventing the generation of abnormal noise due to contact.

本発明のある態様はアンテナ装置である。このアンテナ装置は、基板と、前記基板に立設された薄板状のアンテナ素子と、前記基板及びアンテナ素子を覆うアンテナケースと、を備え、
前記アンテナケースは、左右の内壁面からそれぞれ内側に突出したリブによる前後方向の溝を有し、前記アンテナケースと前記リブは一体化しており、前記溝は、前記アンテナ素子を保持することを特徴とする。
One embodiment of the present invention is an antenna device. The antenna device includes a substrate, a thin plate-like antenna element erected on the substrate, and an antenna case that covers the substrate and the antenna element.
The antenna case has grooves in the front-rear direction by ribs protruding inward from left and right inner wall surfaces, the antenna case and the rib are integrated, and the groove holds the antenna element. And

前記溝に前記アンテナ素子が圧入されているとよい。   The antenna element may be press-fitted into the groove.

なお、以上の構成要素の任意の組合せ、本発明の表現を方法やシステムなどの間で変換したものもまた、本発明の態様として有効である。   It should be noted that any combination of the above-described constituent elements, and those obtained by converting the expression of the present invention between methods and systems are also effective as aspects of the present invention.

本発明に係るアンテナ装置は、アンテナケースの内側に薄板状のアンテナ素子を保持するリブを設けることで、異音発生の原因であるアンテナ素子の振動を防止することができる。これによって、アンテナ装置が車両に取り付けられた場合に、車両の振動に起因してアンテナ素子が振動し、アンテナ素子とアンテナケースとの接触による異音発生を回避できる。   The antenna device according to the present invention can prevent vibration of the antenna element that is the cause of abnormal noise by providing a rib for holding the thin plate-like antenna element inside the antenna case. As a result, when the antenna device is attached to the vehicle, the antenna element vibrates due to the vibration of the vehicle, and generation of abnormal noise due to contact between the antenna element and the antenna case can be avoided.

本発明に係るアンテナ装置の実施の形態の分解斜視図。The disassembled perspective view of embodiment of the antenna device which concerns on this invention. 同斜視図。FIG. 同側断面図。FIG. 実施の形態において、インナーケースを省略した斜視図。The perspective view which abbreviate | omitted the inner case in embodiment. 図3のA−A断面図。AA sectional drawing of FIG. 図5の要部拡大断面図。The principal part expanded sectional view of FIG. インナーケースの側断面図。The sectional side view of an inner case. インナーケースの内側を見た斜視図。The perspective view which looked at the inner side of the inner case.

以下、図面を参照しながら本発明の好適な実施の形態を詳述する。なお、各図面に示される同一または同等の構成要素、部材、処理等には同一の符号を付し、適宜重複した説明は省略する。また、実施の形態は発明を限定するものではなく例示であり、実施の形態に記述されるすべての特徴やその組み合わせは必ずしも発明の本質的なものであるとは限らない。   Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same or equivalent component, member, process, etc. which are shown by each drawing, and the overlapping description is abbreviate | omitted suitably. In addition, the embodiments do not limit the invention but are exemplifications, and all features and combinations thereof described in the embodiments are not necessarily essential to the invention.

図1乃至図8を用いて本発明の実施の形態であるアンテナ装置1を説明する。アンテナ装置1は、金属製のベース5と、ベース5上にネジで固定される絶縁性の基板7と、基板7を内側にしてベース5の上側を覆うようにベース5にネジ止めされる電波透過性のインナーケース6とを有し、ベース5とインナーケース6とで囲まれた内部空間、つまり基板7の上面に、前からSDARSアンテナ(パッチアンテナ)10、GNSSアンテナ(パッチアンテナ)20及び薄板状のTELアンテナ30が搭載される。すなわち、SDARSアンテナ10及びGNSSアンテナ20はそれぞれ両面接着テープ11,21を介して基板7の上面に固着され、金属で形成された薄板状のTELアンテナ30の下端部が基板7に差し込まれて固定されることで、薄板状のTELアンテナ30は基板7に対して垂直に立設される。インナーケース6の前部天井面にはSDARSアンテナ10の上面に対向する金属板からなる無給電素子15が配置、固定されている。なお、ベース5とインナーケース6間には防水パッキン9が介在して防水構造となっている。インナーケース6を覆うように例えばシャークフィン形状の電波透過性アウターケースがベースに固定されるが、いずれの図面においてもアウターケースの図示は省略している。なお、図1により、アンテナ装置1における、上下、前後、左右の各方向を定義する。上下方向は水平面に垂直な方向であり、前後方向は、水平面におけるアンテナ装置1の長手方向であり、左右方向は、アンテナ装置1の幅方向である。また、前方向は、アンテナ装置1を車両に取り付けた場合の進行方向であり、左右方向は、進行方向である前方を見た状態を基準に定めている。   An antenna device 1 according to an embodiment of the present invention will be described with reference to FIGS. The antenna device 1 includes a metal base 5, an insulating substrate 7 fixed on the base 5 with screws, and radio waves screwed to the base 5 so as to cover the upper side of the base 5 with the substrate 7 facing inside. An internal space surrounded by the base 5 and the inner case 6, that is, the upper surface of the substrate 7, the SDARS antenna (patch antenna) 10, the GNSS antenna (patch antenna) 20, A thin TEL antenna 30 is mounted. That is, the SDARS antenna 10 and the GNSS antenna 20 are fixed to the upper surface of the substrate 7 via double-sided adhesive tapes 11 and 21, respectively, and the lower end portion of the thin plate-like TEL antenna 30 made of metal is inserted into the substrate 7 and fixed. As a result, the thin plate-shaped TEL antenna 30 is erected vertically to the substrate 7. A parasitic element 15 made of a metal plate facing the upper surface of the SDARS antenna 10 is arranged and fixed on the front ceiling surface of the inner case 6. A waterproof packing 9 is interposed between the base 5 and the inner case 6 to form a waterproof structure. For example, a shark fin-shaped radio wave transmissive outer case is fixed to the base so as to cover the inner case 6, but the outer case is not shown in any of the drawings. In addition, with FIG. 1, each direction of up-down, front-back, left-right in the antenna device 1 is defined. The vertical direction is a direction perpendicular to the horizontal plane, the front-back direction is the longitudinal direction of the antenna device 1 on the horizontal plane, and the horizontal direction is the width direction of the antenna device 1. The forward direction is the traveling direction when the antenna device 1 is attached to the vehicle, and the left-right direction is determined based on the state of looking forward, which is the traveling direction.

ベース5の底面側の防水シール16は環状弾性部材であり、ベース5の底面とアンテナ装置1の取付相手側部材(例えば車両ルーフ)との間に挟持され、両者の間を水密封止する。ボルト19はワッシャー18及びホルダ17を介して(貫通して)ベース5に螺合し、アンテナ装置1を取付相手側部材に固定する。   The waterproof seal 16 on the bottom surface side of the base 5 is an annular elastic member, and is sandwiched between the bottom surface of the base 5 and a mounting counterpart member (for example, a vehicle roof) of the antenna device 1 and seals the water tightly. The bolt 19 is screwed into (through) the base 5 via the washer 18 and the holder 17 to fix the antenna device 1 to the attachment counterpart member.

図5乃至図8に示すように、インナーケース6は、内面において左右の両側面(内壁面)から内部方向に突出したリブ61を有している。インナーケース6とリブ61は一体化している(一体に成形されている)。リブ61が設けられているので、インナーケース6には前後方向に渡って溝62が形成される。溝62が形成されている位置は、アンテナ装置1を上方から見ると、TELアンテナ30の一部を覆うように重なっている。さらに、インナーケース6をベース5に組み付ける前の状態では、溝62の最下端の左右方向の幅は、TELアンテナ30の左右方向の幅(TELアンテナ30の厚み)よりも少し小さい。さらに、インナーケース6の組み付け状態では、溝62の最下端が、TELアンテナ30の最上端よりも上下方向の高さが低くなるように設定されている。このように設定することで、TELアンテナ30等が取り付けられた基板7を保持した金属ベース5に、インナーケース6を取り付けると、TELアンテナ30の上端部が溝62に圧入されることになり、インナーケース6がリブ61でTELアンテナ30を左右方向から挟み込んで保持することができる。なお、TELアンテナ30の一部を覆うリブ61(溝62)がインナーケース6の内側に複数形成されていてもよいし、あるいはリブ61(溝62)がTELアンテナ30の全てを覆う構成であってもよい。   As shown in FIGS. 5 to 8, the inner case 6 has ribs 61 projecting inward from the left and right side surfaces (inner wall surfaces) on the inner surface. The inner case 6 and the rib 61 are integrated (molded integrally). Since the rib 61 is provided, a groove 62 is formed in the inner case 6 in the front-rear direction. The position where the groove 62 is formed overlaps to cover a part of the TEL antenna 30 when the antenna device 1 is viewed from above. Furthermore, in the state before the inner case 6 is assembled to the base 5, the width in the left-right direction at the lowermost end of the groove 62 is slightly smaller than the width in the left-right direction of the TEL antenna 30 (the thickness of the TEL antenna 30). Further, in the assembled state of the inner case 6, the lowermost end of the groove 62 is set to be lower in the vertical direction than the uppermost end of the TEL antenna 30. By setting in this way, when the inner case 6 is attached to the metal base 5 holding the substrate 7 to which the TEL antenna 30 or the like is attached, the upper end portion of the TEL antenna 30 is press-fitted into the groove 62. The inner case 6 can sandwich and hold the TEL antenna 30 with the rib 61 from the left and right directions. Note that a plurality of ribs 61 (grooves 62) covering a part of the TEL antenna 30 may be formed inside the inner case 6, or the ribs 61 (grooves 62) cover the entire TEL antenna 30. May be.

インナーケース6がリブ61でTELアンテナ30を左右方向から挟み込んで保持するので、アンテナ装置1を車両に取り付けた後に、車両の振動に起因してアンテナ装置1が振動し、TELアンテナ30が振動することでアンテナケース6と接触して異音が発生することを防ぐことができる。   Since the inner case 6 sandwiches and holds the TEL antenna 30 with the rib 61 from the left and right directions, the antenna device 1 vibrates due to the vibration of the vehicle and the TEL antenna 30 vibrates after the antenna device 1 is attached to the vehicle. In this way, it is possible to prevent the generation of abnormal noise in contact with the antenna case 6.

また、リブ61はインナーケース6と同じ材料であるので、リブ61でTELアンテナ30を左右方向から挟み込んで保持してもTELアンテナ30の電気的特性に影響を与えにくい。   Further, since the rib 61 is made of the same material as the inner case 6, even if the TEL antenna 30 is sandwiched and held by the rib 61 from the left and right directions, the electrical characteristics of the TEL antenna 30 are hardly affected.

なお、TELアンテナ30の振動による異音の発生を防止するために、TELアンテナ30の上部にクッション材を貼り付けたり、ゴム状の緩衝材をTELアンテナ30の上部とリブ61が設けられていないインナーケースとの間に挟み込んだりすることが考えられる。これらの場合には、アンテナ装置を車両に取り付けた後に、車両の振動によりアンテナ装置が振動してTELアンテナ30が振動しても、クッション材やゴム状の緩衝材によりTELアンテナ30がインナーケースに接触することを防止することができるので、異音の発生を防ぐことができる。しかし、これらの場合では、クッション材やゴム状の緩衝材を設けることが必要となるので、TELアンテナ30とインナーケースとの間の隙間をクッション材やゴム状の緩衝材が入るようにしなくてはならず、インナーケースの左右方向の幅を大きくする必要がある。   In order to prevent the generation of abnormal noise due to vibration of the TEL antenna 30, a cushion material is not attached to the upper portion of the TEL antenna 30, or a rubber-like cushioning material is not provided on the upper portion of the TEL antenna 30 and the rib 61. It can be considered to be sandwiched between the inner case and the like. In these cases, even if the antenna device vibrates due to the vibration of the vehicle and the TEL antenna 30 vibrates after the antenna device is attached to the vehicle, the TEL antenna 30 is attached to the inner case by the cushioning material or the rubber-like cushioning material. Since it can prevent contacting, generation | occurrence | production of abnormal noise can be prevented. However, in these cases, it is necessary to provide a cushioning material or a rubber-like cushioning material. Therefore, the cushioning material or the rubbery cushioning material must be inserted in the gap between the TEL antenna 30 and the inner case. It is necessary to increase the width of the inner case in the left-right direction.

一方、本実施の形態のアンテナ装置1では、クッション材やゴム状の緩衝材を設ける必要が無いので、上記のような場合に比べてインナーケースの左右方向の幅を小さくすることができ、アンテナ装置のデザイン性を向上させることができる。   On the other hand, in the antenna device 1 of the present embodiment, there is no need to provide a cushion material or a rubber-like cushioning material, so that the width of the inner case in the left-right direction can be reduced compared to the above case, and the antenna The design of the apparatus can be improved.

また、上記のようにクッション材やゴム状の緩衝材を設ける場合には、クッション材やゴム状の緩衝材により部品点数が増加し、各部品には寸法公差があるので寸法バラツキが大きくなる。しかし、本実施の形態に係るアンテナ装置1では、上記のような場合に比べて部品点数を少なくすることができ、寸法バラツキを小さくすることができる。   Further, when a cushion material or a rubber-like cushioning material is provided as described above, the number of parts increases due to the cushion material or the rubber-like cushioning material, and each component has a dimensional tolerance, resulting in a large dimensional variation. However, in the antenna device 1 according to the present embodiment, the number of parts can be reduced and the dimensional variation can be reduced as compared with the above case.

以上、実施の形態を例に本発明を説明したが、実施の形態の各構成要素や各処理プロセスには請求項に記載の範囲で種々の変形が可能であることは当業者に理解されるところである。以下、変形例について触れる。   The present invention has been described above by taking the embodiment as an example. However, it is understood by those skilled in the art that various modifications can be made to each component and each processing process of the embodiment within the scope of the claims. By the way. Hereinafter, modifications will be described.

本発明の実施の形態では、基板に立設された薄板状のアンテナ素子としてTELアンテナ30を例示したが、TEL用以外のアンテナ素子の場合にも本発明は適用できる。   In the embodiment of the present invention, the TEL antenna 30 is exemplified as a thin plate-like antenna element standing on the substrate. However, the present invention can also be applied to antenna elements other than those for TEL.

本発明の実施の形態では、アンテナケースはインナーケースとアウターケースの2重ケース構造であるが、本発明は2重ケース構造に限定されず、一つのアンテナケースを有する場合であってもよい。   In the embodiment of the present invention, the antenna case has a double case structure of an inner case and an outer case, but the present invention is not limited to the double case structure, and may have a single antenna case.

1 アンテナ装置
5 ベース
6 インナーケース
7 基板
10 SDARSアンテナ
20 GNSSアンテナ
30 TELアンテナ
61 リブ
62 溝
1 Antenna device 5 Base 6 Inner case 7 Substrate 10 SDARS antenna 20 GNSS antenna 30 TEL antenna 61 Rib 62 Groove

Claims (2)

基板と、
前記基板に立設された薄板状のアンテナ素子と、
前記基板及びアンテナ素子を覆うアンテナケースと、
を備え、
前記アンテナケースは、左右の内壁面からそれぞれ内側に突出したリブによる前後方向の溝を有し、
前記アンテナケースと前記リブは一体化しており、
前記溝は、前記アンテナ素子を保持することを特徴とするアンテナ装置。
A substrate,
A thin plate-like antenna element erected on the substrate;
An antenna case covering the substrate and the antenna element;
With
The antenna case has grooves in the front-rear direction by ribs protruding inward from the left and right inner wall surfaces,
The antenna case and the rib are integrated,
The antenna device, wherein the groove holds the antenna element.
前記溝に前記アンテナ素子が圧入されていることを特徴とする請求項1に記載のアンテナ装置。   The antenna device according to claim 1, wherein the antenna element is press-fitted into the groove.
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US11342675B2 (en) 2019-10-01 2022-05-24 Harada Industry Co., Ltd. Antenna module
US11569578B2 (en) 2019-10-10 2023-01-31 Harada Industry Co, Ltd. Patch antenna device

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