JP3798653B2 - A method for manufacturing an integrally molded antenna. - Google Patents

A method for manufacturing an integrally molded antenna. Download PDF

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Publication number
JP3798653B2
JP3798653B2 JP2001169103A JP2001169103A JP3798653B2 JP 3798653 B2 JP3798653 B2 JP 3798653B2 JP 2001169103 A JP2001169103 A JP 2001169103A JP 2001169103 A JP2001169103 A JP 2001169103A JP 3798653 B2 JP3798653 B2 JP 3798653B2
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JP
Japan
Prior art keywords
antenna
soft resin
receptacle
insulator
integrally molded
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2001169103A
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Japanese (ja)
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JP2002368527A (en
Inventor
博史 中山
博之 郡司
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kenwood KK
Original Assignee
Kenwood KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kenwood KK filed Critical Kenwood KK
Priority to JP2001169103A priority Critical patent/JP3798653B2/en
Publication of JP2002368527A publication Critical patent/JP2002368527A/en
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Publication of JP3798653B2 publication Critical patent/JP3798653B2/en
Anticipated expiration legal-status Critical
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  • Details Of Aerials (AREA)
  • Support Of Aerials (AREA)

Description

【0001】
【発明の属する技術分野】
この発明は一体成形型アンテナの構造に関する。
【0002】
【従来の技術】
従来の無線機等に用いる一体成形型アンテナの構造の例を図5および図6により説明する。図に示すレセプタクル部1はステンレスで作られており、ねじ1bにより無線機本体に締着される。絶縁体5はレセプタクル部1と嵌合され、絶縁体5にはさらに導電部材4が固着されている。なお、図6には導電部材4を示していない。
【0003】
図8にこのような一体成形型アンテナが無線機に用いられる状態を示す。図5には示していなかったが導電部材4にはアンテナエレメント7が固着されている。また、筐体11に固定されたアンテナ保持部材8には樹脂9を介して導電ロッド10が固定されている。導電ロッド10はプリント基板12の入出力部パターンに接続されている。レセプタクル部1、絶縁体5およびアンテナエレメント7は成形された軟性樹脂13(エラストマー)により覆われる。
【0004】
上記のように構成されたアンテナのレセプタクル部1のねじ1bをアンテナ保持部材8のめねじ8aにねじ込むと導電部材4は導電ロッド10に圧接されアンテナエレメント7は導電部材4および導電ロッド10を介してプリント基板12の入出力部パターンに接続される。
【0005】
軟性樹脂13がレセプタクル部1に対して回転方向のずれおよび軸方向のずれが発生しないようにするためにレセプタクル部1に設けられた穴1a、1a…に軟性樹脂が注入されていた。
【0006】
図7は従来の一体成形型アンテナの構造の他の例を示す。この例ではねじ6bにより無線機本体に締着されるレセプタクル部6にはローレット加工部6aが設けられている。
【0007】
レセプタクル部6、レセプタクル部1と嵌合された絶縁体5および図7では図示していないアンテナエレメントを覆う軟性樹脂(アンテナ外覆)の回転方向のずれがローレット加工部6aにより防止され、また、レセプタクル部6の段差により抜けが防止される。
【0008】
また、レセプタクル部とそれに嵌合される絶縁体との密着性を上げるために特殊接着技術を用いるものもあった。
【0009】
【発明が解決しようとする課題】
上記した図5、図6および図8に示す従来の一体成形型アンテナの構造では、レセプタクル部1の穴1aから流入した樹脂は絶縁体5に固着しているが、その接着力は余り大きくなく、十分な強度が得られなかった。
【0010】
また、図7に示す従来の一体成形型アンテナの構造ではローレット加工部の深さには限界があり、アンテナは軟らかさが求められ、ある程度軟らかい樹脂(エラストマー)を使用しなければならないため、図7に矢印で示す向きにトルクをかけた場合あるいは屈曲させる力を加えた場合に浅い溝に入り込んでいた樹脂が山に乗り上げてしまい十分な強度が保てなかった。
【0011】
レセプタクル部とアンテナ外覆との密着性を上げるために特殊接着技術を用いる場合は製造コストが高くなるという問題があった。
【0012】
この発明は上記した点に鑑みてなされたものであって、その目的とするところは、軟らかい樹脂でレセプタクル部およびアンテナエレメントを覆う場合にも十分な強度が得られ、しかも製造コストの安い一体成形型アンテナの構造を提供することにある。
【0013】
【課題を解決するための手段】
この発明の一体成形型アンテナの製造方法は、レセプタクル部とアンテナを保持する絶縁体とを嵌合させ、前記絶縁体に導電部材を介してアンテナエレメントを固着し、前記レセプタクル部、絶縁体およびアンテナエレメントを軟性樹脂を成形することにより覆う一体成形型アンテナの製造方法において、前記レセプタクル部に設けた穴と前記絶縁体に設けられ外部まで延びる溝とを連通させ、前記軟性樹脂を前記レセプタクル部に設けた穴から流入させて前記溝を通り外部まで流出させると共に、前記レセプタクル部の外部を前記軟性樹脂が流れる方向と前記溝内を前記軟性樹脂が流れる方向とを一致させ、前記レセプタクル部の外部を流れた前記軟性樹脂と前記溝内を流れた前記軟性樹脂とが一体となるようにして成形するものである。
【0016】
【発明の実施の形態】
この発明の実施例である一体成形型アンテナを図面に基づいて説明する。図1はこの発明の実施例である一体成形型アンテナを示す断面図、図2は同一体成形型アンテナを示す斜視図である。
【0017】
図1に示すレセプタクル部1はステンレスで作られており、ねじ1bにより無線機本体に締着される。絶縁体2はレセプタクル部1と嵌合され、絶縁体2にはさらに導電部材4が固着されている。導電部材4にはアンテナエレメント7が固着されており、これらのレセプタクル部1、絶縁体2およびアンテナエレメント7は軟性樹脂13を成形することにより覆われる。
【0018】
絶縁体2にはレセプタクル部1に嵌着されたとき、レセプタクル部1に設けられた穴1a、1a…と連通して外部に開口する溝2a、2a…が設けられている。軟性樹脂13を注入して一体成形する場合、穴1a、1a…から入り込む軟性樹脂は図2に示す矢印のように流れて絶縁体2とレセプタクル部1との外部に出て、レセプタクル部1の外側を流れる軟性樹脂と一体となって繋がる。
【0019】
上記のように、繋がっている樹脂が切れるまでは強度が保てる。また、樹脂が繋がる道筋はゲート口からアンテナ先端に向かう流れと方向が合っておりガス抜きが良好に行われ、成形性もよい。このようにして一体となったアンテナは従来例で示したように無線機に用いられる。
【0020】
図3はこの発明の参考例である一体成形型アンテナを示す斜視図、図4は同一体成形型アンテナを示す断面図である。図3および図4に示すレセプタクル部1は実施例と同様にステンレスで作られており、ねじ1bにより無線機本体に締着される。絶縁体3はレセプタクル部1と嵌合され、絶縁体3には図示していないが第1の実施例と同様に導電部材およびアンテナエレメントが固着されている。
【0021】
絶縁体3にはレセプタクル部1に嵌着されたとき、レセプタクル部1に設けられた穴1a、1a…と連通する溝3aが設けられている。軟性樹脂を注入して一体成形する場合、穴1a、1aから入り込む軟性樹脂は矢印のように流れ穴1a、1aから外部に出て、レセプタクル部1の外側を流れる軟性樹脂と一体となって繋がる。
【0022】
上記のように、繋がっている樹脂が切れるまでは強度が保てる。このようにして一体となったアンテナは従来例で示したように無線機に用いられる。この例の軟性樹脂の流れではガス抜き等の点で成形性は実施例に比べて劣るが強度においては従来例のものより優れている。
【0023】
【発明の効果】
この発明の一体成形型アンテナによれば、アンテナ外覆にかなり軟らかい樹脂を用いて一体成形を行っても成形性を損なうことなく、屈曲や回転トルクに対する強度を保つことができる。
【0024】
また、内部構成部品も複雑な形状とする必要はない。さらに、内部部品と外側部品との密着性を高めるための特殊接着技術が不要である。
【図面の簡単な説明】
【図1】 この発明の実施例である一体成形型アンテナを示す断面図である。
【図2】同一体成形型アンテナを示す斜視図である。
【図3】 この発明の参考例である一体成形型アンテナを示す斜視図である。
【図4】同一体成形型アンテナを示す断面図である。
【図5】従来の一体成形型アンテナの例を示す断面図である。
【図6】同一体成形型アンテナを示す斜視図である。
【図7】従来の一体成形型アンテナの他の例を示す斜視図である。
【図8】従来の一体成形型アンテナの取付状態を示す断面図である。
【符号の説明】
1 レセプタクル部、1a 穴、1b ねじ
2 絶縁体、2a 溝
3 絶縁体、3a 溝
4 導電部材
5 絶縁体
6 レセプタクル部、6a ローレット加工部、6b ねじ
7 アンテナエレメント
8 アンテナ保持部材、8a めねじ
9 樹脂
10 導電ロッド
11 筐体
12 プリント基板
13 軟性樹脂
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure of an integrally molded antenna.
[0002]
[Prior art]
An example of the structure of an integrally molded antenna used in a conventional wireless device will be described with reference to FIGS. The receptacle part 1 shown in the figure is made of stainless steel, and is fastened to the radio main body by a screw 1b. The insulator 5 is fitted to the receptacle part 1, and the conductive member 4 is further fixed to the insulator 5. In FIG. 6, the conductive member 4 is not shown.
[0003]
FIG. 8 shows a state in which such an integrally molded antenna is used in a wireless device. Although not shown in FIG. 5, an antenna element 7 is fixed to the conductive member 4. In addition, a conductive rod 10 is fixed to the antenna holding member 8 fixed to the housing 11 via a resin 9. The conductive rod 10 is connected to the input / output part pattern of the printed circuit board 12. The receptacle part 1, the insulator 5 and the antenna element 7 are covered with a molded soft resin 13 (elastomer).
[0004]
When the screw 1b of the receptacle portion 1 of the antenna configured as described above is screwed into the female screw 8a of the antenna holding member 8, the conductive member 4 is pressed against the conductive rod 10, and the antenna element 7 is interposed via the conductive member 4 and the conductive rod 10. Are connected to the input / output pattern of the printed circuit board 12.
[0005]
The soft resin 13 has been injected into the holes 1a, 1a,... Provided in the receptacle part 1 so that the soft resin 13 does not shift in the rotational direction and in the axial direction with respect to the receptacle part 1.
[0006]
FIG. 7 shows another example of the structure of a conventional integrally molded antenna. In this example, a knurled portion 6a is provided in the receptacle portion 6 that is fastened to the radio device main body by a screw 6b.
[0007]
The knurled portion 6a prevents a shift in the rotational direction of the receptacle 6, the insulator 5 fitted to the receptacle 1, and the soft resin (antenna outer cover) that covers the antenna element not shown in FIG. Removal is prevented by the step of the receptacle portion 6.
[0008]
Some have used a special bonding technique to increase the adhesion between the receptacle and the insulator fitted thereto.
[0009]
[Problems to be solved by the invention]
In the conventional integrally molded antenna structure shown in FIGS. 5, 6, and 8, the resin flowing from the hole 1a of the receptacle 1 is fixed to the insulator 5, but the adhesive force is not so large. A sufficient strength could not be obtained.
[0010]
Further, in the structure of the conventional integrally molded antenna shown in FIG. 7, there is a limit to the depth of the knurled portion, and the antenna is required to be soft, and a certain degree of soft resin (elastomer) must be used. When a torque was applied in the direction indicated by the arrow in FIG. 7 or when a bending force was applied, the resin that had entered the shallow groove ran over the mountain, and sufficient strength could not be maintained.
[0011]
When a special adhesion technique is used to improve the adhesion between the receptacle and the antenna outer cover, there is a problem that the manufacturing cost increases.
[0012]
The present invention has been made in view of the above points, and an object of the present invention is to provide an integral molding that can provide sufficient strength even when the receptacle and the antenna element are covered with a soft resin and that is low in manufacturing cost. It is to provide a structure of a type antenna.
[0013]
[Means for Solving the Problems]
Method for producing a molded antenna of the present invention, fitted with an insulator holding the receptacle portion and the antenna, and fixed to the antenna element through a conductive member to the insulator, the receptacle portion, the insulator and the antenna In the method for manufacturing an integrally molded antenna that covers an element by molding a soft resin, a hole provided in the receptacle portion and a groove provided in the insulator and extending to the outside are communicated with each other, and the soft resin is connected to the receptacle portion. And the flow of the soft resin through the groove and the flow of the soft resin in the groove coincide with the direction of the flow of the soft resin through the groove, and the outside of the receptacle portion. The soft resin that has flowed through the groove and the soft resin that has flowed through the groove are integrally formed .
[0016]
DETAILED DESCRIPTION OF THE INVENTION
An integrally molded antenna according to an embodiment of the present invention will be described with reference to the drawings. 1 is a sectional view showing a molded antenna is a real施例of the present invention. FIG. 2 is a perspective view showing the same molded antenna.
[0017]
The receptacle part 1 shown in FIG. 1 is made of stainless steel, and is fastened to the radio main body by screws 1b. The insulator 2 is fitted to the receptacle portion 1, and a conductive member 4 is further fixed to the insulator 2. An antenna element 7 is fixed to the conductive member 4, and the receptacle part 1, the insulator 2 and the antenna element 7 are covered by molding a soft resin 13.
[0018]
The insulator 2 is provided with grooves 2a, 2a,... That communicate with holes 1a, 1a,... Provided in the receptacle part 1 and are opened to the outside when fitted in the receptacle part 1. When the soft resin 13 is injected and integrally molded, the soft resin entering from the holes 1a, 1a,... Flows as shown by the arrows shown in FIG. Connected with the soft resin flowing outside.
[0019]
As described above, the strength can be maintained until the connected resin is cut. In addition, the route connecting the resin is aligned with the flow from the gate port toward the tip of the antenna, the gas is well vented, and the moldability is also good. The antenna integrated in this way is used for a radio as shown in the conventional example.
[0020]
FIG. 3 is a perspective view showing an integrally molded antenna as a reference example of the present invention, and FIG. 4 is a cross-sectional view showing the same molded antenna. Receptacle 1 shown in FIGS. 3 and 4 are made of like the real施例stainless, it is fastened to the radio device main body by a screw 1b. The insulator 3 is fitted to the receptacle part 1, and although not shown, the conductive member and the antenna element are fixed to the insulator 3 as in the first embodiment.
[0021]
The insulator 3 is provided with a groove 3a that communicates with holes 1a, 1a,... Provided in the receptacle part 1 when fitted to the receptacle part 1. When the soft resin is injected and integrally molded, the soft resin entering through the holes 1a and 1a goes out of the flow holes 1a and 1a as indicated by the arrows, and is integrally connected with the soft resin flowing outside the receptacle portion 1. .
[0022]
As described above, the strength can be maintained until the connected resin is cut. The antenna integrated in this way is used for a radio as shown in the conventional example. In this example, the flow of the soft resin is inferior to that of the embodiment in terms of degassing, but the strength is superior to that of the conventional example.
[0023]
【The invention's effect】
According to the integrally molded antenna of the present invention, the strength against bending and rotating torque can be maintained without impairing the moldability even when integral molding is performed using a considerably soft resin for the antenna outer cover.
[0024]
Also, the internal components do not have to be complicated shapes. Furthermore, a special adhesion technique for improving the adhesion between the inner part and the outer part is not necessary.
[Brief description of the drawings]
1 is a cross-sectional view showing the integral antenna is a real施例of the present invention.
FIG. 2 is a perspective view showing the same-body molded antenna.
FIG. 3 is a perspective view showing an integrally molded antenna that is a reference example of the present invention.
FIG. 4 is a cross-sectional view showing the same-body molded antenna.
FIG. 5 is a cross-sectional view showing an example of a conventional integrally molded antenna.
FIG. 6 is a perspective view showing the same-body molded antenna.
FIG. 7 is a perspective view showing another example of a conventional integrally molded antenna.
FIG. 8 is a cross-sectional view showing a mounting state of a conventional integrally molded antenna.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Receptacle part, 1a hole, 1b Screw 2 Insulator, 2a Groove 3 Insulator, 3a Groove 4 Conductive member 5 Insulator 6 Receptacle part, 6a Knurled part, 6b Screw 7 Antenna element 8 Antenna holding member, 8a Female thread 9 Resin 10 Conductive rod 11 Housing 12 Printed circuit board 13 Soft resin

Claims (1)

レセプタクル部とアンテナを保持する絶縁体とを嵌合させ、前記絶縁体に導電部材を介してアンテナエレメントを固着し、前記レセプタクル部、絶縁体およびアンテナエレメントを軟性樹脂を成形することにより覆う一体成形型アンテナの製造方法において、前記レセプタクル部に設けた穴と前記絶縁体に設けられ外部まで延びる溝とを連通させ、前記軟性樹脂を前記レセプタクル部に設けた穴から流入させて前記溝を通り外部まで流出させると共に、前記レセプタクル部の外部を前記軟性樹脂が流れる方向と前記溝内を前記軟性樹脂が流れる方向とを一致させ、前記レセプタクル部の外部を流れた前記軟性樹脂と前記溝内を流れた前記軟性樹脂とが一体となるようにして成形することを特徴とする一体成形型アンテナの製造方法An insulator for holding the receptacle and an antenna fitted, the fixed antenna element through a conductive member in the insulator, integrally molded to cover by the receptacle portion, the insulator and the antenna elements forming the soft resin In the manufacturing method of the mold antenna, the hole provided in the receptacle portion and the groove provided in the insulator and extending to the outside are communicated, and the soft resin is allowed to flow from the hole provided in the receptacle portion and passes through the groove to be externally provided. And the direction in which the soft resin flows outside the receptacle and the direction in which the soft resin flows in the groove match, and the soft resin that flows outside the receptacle flows in the groove. A method of manufacturing an integrally molded antenna, wherein the molding is performed so that the soft resin is integrated .
JP2001169103A 2001-06-05 2001-06-05 A method for manufacturing an integrally molded antenna. Expired - Fee Related JP3798653B2 (en)

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