JP3852684B2 - Method for manufacturing antenna device - Google Patents

Method for manufacturing antenna device Download PDF

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JP3852684B2
JP3852684B2 JP2001385792A JP2001385792A JP3852684B2 JP 3852684 B2 JP3852684 B2 JP 3852684B2 JP 2001385792 A JP2001385792 A JP 2001385792A JP 2001385792 A JP2001385792 A JP 2001385792A JP 3852684 B2 JP3852684 B2 JP 3852684B2
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antenna element
conductive metal
metal plate
members
shape
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JP2003188623A (en
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康浩 箕浦
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Yokowo Co Ltd
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Yokowo Co Ltd
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【０００１】
【発明の属する技術分野】
本発明は、主として移動体通信用の無線機に使用されるアンテナ装置の製造方法に関するものである。
【０００２】
【従来の技術】
携帯電話等の移動体通信用の無線機のアンテナ装置およびその製造方法の一例が、特開２００１−５７５０５公報に提案されている。この公報で提案されている技術は以下のごときものである。まず、良導電金属板を打ち抜いて、両端で折り返すように連続したミアンダ状の複数の直線状部を形成する。なお、直線状部は両端で良導電金属板に接続された状態にある。次に、これをプレス加工して、複数の直線状部を交互に上下方向に半円状に突出させて一連の略円形螺旋状とし、その一端に良導電金属からなる接続金具が配設固定される。そして、略円形螺旋状とされた複数の直線状部に、全体を包含するようにインサート成形により絶縁樹脂材が略円柱状に成型される。その後に、複数の直線状部の両端を、良導電金属板から切り離してアンテナ装置が完成される。
【０００３】
かかるアンテナ装置は、略円柱状の絶縁樹脂材の外周部に略円形螺旋状を形成する複数の直線状部が配設された構造である。
【０００４】
【発明が解決しようとする課題】
上記従来技術にあっては、円形螺旋状を形成する複数の直線状部に一体成型され絶縁樹脂材は、中実の略円柱状を構成しており、アンテナ特性に対して、絶縁樹脂材による誘電体としての電気的影響が大きなものである。また、多量の絶縁樹脂で形成されるために、それだけ重量が大であるとともに材料費が嵩む。また、アンテナ装置をロッドアンテナの先端部に固定する場合に、ロッドアンテナの先端部とアンテナ装置の接続金具とを接続固定するために、接続強度にやや難点がある。
【０００５】
本発明は、従来技術のかかる事情に鑑みてなされたもので、略円形螺旋状のアンテナ素子に一体的に成型されてこれを固定する絶縁樹脂材を略円筒状に成型したアンテナ装置の製造方法を提供することを目的とする。
【０００６】
【課題を解決するための手段】
上記目的を達成するために、本発明のアンテナ装置の製造方法は、良導電金属板を打ち抜き加工して、略円形螺旋状を軸方向に２分割した形状の複数の線状部からなる２組のアンテナ素子部材を少なくとも一端部を前記良導電金属板に接続した状態でそれぞれ形成し、絶縁樹脂材の成型加工により、前記２組のアンテナ素子部材に略円筒状を軸方向に２分割した形状の半円筒状部材を一体的に同一軸上にそれぞれ成形配設し、一方の半円筒状部材が一体成形された一方の組の前記アンテナ素子部材の端部を前記良導電金属板から切り離し、前記アンテナ素子部材の端部を切り離した前記半円筒状部材を他方の半円筒状部材に重ね合わせて前記略円筒状とし、前記２組のアンテナ素子部材の対向する端部を互いに電気的接続して、前記略円形螺旋状を形成し、他方の半円筒状部材が一体成形された他方の組の前記アンテナ素子部材の端部を前記良導電金属板から切り離してなる。
【０００７】
また、良導電金属板を打ち抜き加工して、略円形螺旋状を軸方向に２分割した形状の複数の線状部からなる２組のアンテナ素子部材を少なくとも一端部を前記良導電金属板に接続した状態でそれぞれ形成し、絶縁樹脂材の成型加工により、前記２組のアンテナ素子部材に略円筒状を軸方向に２分割した形状の半円筒状部材を一体的に同一軸上にそれぞれ成形配設し、前記２組のアンテナ素子部材の端部を前記良導電金属板からそれぞれ切り離し、前記２つの半円筒状部材を重ね合わせて前記略円筒状とし、前記２組のアンテナ素子部材の対向する端部を互いに電気的接続して前記略円形螺旋状を形成しても良い。
【０００８】
そして、２枚の良導電金属板を打ち抜き加工して、略円形螺旋状を軸方向に２分割した形状の複数の線状部からなる２組のアンテナ素子部材を少なくとも一端部を前記良導電金属板に接続した状態でそれぞれ形成し、絶縁樹脂材の成型加工により、前記２組のアンテナ素子部材に略円筒状を軸方向に２分割した形状の半円筒状部材を一体的に同一軸上にそれぞれ成形配設し、前記２つの半円筒状部材で略円筒状を形成するように前記２枚の良導電金属板を重ね合わせて、前記２組のアンテナ素子部材の対向する端部を互いに電気的接続して前記略円形螺旋状を形成し、その後に前記２組のアンテナ素子部材の端部を前記２枚の良導電金属板からともに切り離しても良い。
【０００９】
【発明の実施の形態】
以下、本発明の一実施例を図１ないし図９を参照して説明する。図１は、フープ材としての薄い良導電金属板に打ち抜き加工した図である。図２は、図１のものにプレス加工した図である。図３は、図２のものに接続金具を固定した図である。図４は、図３のものに絶縁樹脂材を一体成型した図である。図５は、図４のものの一方をフープ材から切り離して他方に重ね合わせた図である。図６は、図５のものの他方もフープ材から切り離して完成したアンテナ装置の外観斜視図である。図７は、接続金具の拡大外観斜視図である。図８は、図４のＡ−Ａ断面矢視図である。図９は、図６のＢ−Ｂ断面矢視図である。
【００１０】
まず、図１のごとく、フープ材としての薄い良導電金属板１０に打ち抜き加工により、略円形螺旋状を軸方向に２分割した形状の複数の線状部からなる２組のアンテナ素子部材１２，１２を、線状部の少なくとも一端部が良導電金属板１０に接続した状態で形成される。また、同時に、図７に示す良導電金属からなる接続金具１４を圧入固定するための圧入用スリット１６ａが一方の組のアンテナ素子部材１２の一端側の線状部１６に穿設される。ここで、２組のアンテナ素子部材１２，１２は、略円形螺旋状を軸方向に２分割した形状のものを良導電金属板１０平面上に投影した形状である。
【００１１】
次に、図２のごとく、プレス加工により、２組のアンテナ素子部材１２，１２を同一方向に突出させて略半円形状とする。このプレス加工により、２組のアンテナ素子部材１２，１２は、略円形螺旋状を軸方向に２分割した形状となる。
【００１２】
そして、図３のごとく、一方の組のアンテナ素子部材１２の一端側に設けられた圧入用スリット１６に接続金具１４が圧入固定される。なお、図３に示す構造では、アンテナ素子部材１２の一端部と接続金具１４は、未だ電気的に接続されていない。
【００１３】
その後、図４に示すごとく、かかる加工がなされた良導電金属板１０が、絶縁樹脂材の成型金型に挿入されて、２組のアンテナ素子部材１２，１２に対して、略円筒状を軸方向に２分割した形状の２つの半円筒状部材１８，１８が一体的に同一軸上にそれぞれ成形配設される。ここで、２組のアンテナ素子部材１２，１２は、図８に示されるごとく、半円筒状部材１８，１８の外周面またはその近くに配設される。
【００１４】
更に、一方の組のアンテナ素子部材１２の線状部の両端が、良導電金属板１０から切り離されて、これと一体的に形成された一方の半円筒状部材１８が、他方の半円筒状部材１８に重ね合わされて、２つの半円筒状部材１８，１８で円筒状が形成される。ここで、アンテナ素子部材１２の線状部の両端を良導電金属板１０から切り離す際には、半円筒状部材１８の側方に突出する接続用端子１２ａ，１２ａ…をそれぞれ設けるように切断される。そして、２組のアンテナ素子部材１２，１２の対向する接続用端子１２ａ，１２ａ…が互いに電気的接続なされ、２組のアンテナ素子部材１２，１２の複数の線状部によって略円形螺旋状が形成される。しかも、この形成された略円形螺旋状の線状部の一端部が接続用端子１２ａにより、接続金具１４が固定された線状部１６に電気的接続される。これらの接続用端子１２ａ，１２ａ…の電気的接続は、カシメや融着や抵抗溶接や半田付け等いかなる手段によるものであっても良い。
【００１５】
最後に、未だ良導電金属板１０から切り離されていない他方の組のアンテナ素子部材１２の線状部の両端を良導電金属板１０から切り離して、図６に示すごときアンテナ装置２０が完成される。
【００１６】
かかるアンテナ装置２０は、図９に断面図を示すごとく、絶縁樹脂材は中空略円筒状であり、それだけアンテナ特性に対して、絶縁樹脂材による誘電体としての電気的影響が少なくなる。また、成型に必要な絶縁樹脂材の量が少なく、それだけ重量を軽減できるとともに材料費も安価となる。
【００１７】
さらに、上記実施例では、図９に示すごとく、２つの半円筒状部材１８，１８で形成する略円筒状の内径は、接続金具１４を軸方向に穿設貫通させた透孔よりも径が大きいが、これを同一径として、ロッドアンテナエレメントの先端部が挿入されて適宜に固定されるようにしても良い。そしてさらに、２つの半円筒状部材１８，１８で形成する略円筒状の内周面に、雌ネジを刻設し、ロッドアンテナエレメントの線端部に設けた雄ネジを螺合挿入させて固定できるようにしても良い。
【００１８】
ところで、上記実施例の製造方法では、良導電金属板１０に、図１のごとき打ち抜き加工し、さらに図２のごときプレス加工して、２組のアンテナ素子部材１２，１２の複数の線状部を略円形螺旋状を軸方向に２分割した形状に形成しているが、図１の打ち抜きと図２のプレス加工を一工程で行っても良いことは勿論である。
【００１９】
また、上記実施例では、図５に示すごとく、一方の組のアンテナ素子部材１２の線状部を良導電金属板１０から切り離して、２つの半円筒状部材１８，１８を重ね合わせて２組のアンテナ素子部材１２，１２の接続用端子１２ａ，１２ａ…を互いに電気的接続した後に、他方の組のアンテナ素子部材１２の線状部を良導電金属板１０から切り離して、図６のごときアンテナ装置２０を完成させているが、これに限られず、図４に示す状態から、２組のアンテナ素子部材１２，１２の線状部を良導電金属板１０から双方とも切り離し、２つの半円筒状部材１８，１８を重ね合わせて２組のアンテナ素子部材１２，１２の接続用端子１２ａ，１２ａ…を互いに電気的接続して、図６のごときアンテナ装置２０を完成させても良い。
【００２０】
そして、上記実施例では、２組のアンテナ素子部材１２，１２を、１つのフープ材としての良導電金属板１０に形成しているが、これに限られず、２組のアンテナ素子部材１２，１２をそれぞれ別々のフープ材としての良導電金属板１０，１０に形成しても良い。この２組のアンテナ素子部１２，１２をそれぞれ別々の良導電金属板１０，１０に形成するならば、半円筒状部材１８，１８が成型された後に、それぞれの組のアンテナ素子部材１２，１２が形成された２枚の良導電金属板１０，１０を重ね合わせて２つの半円筒状部材１８，１８で略円筒状を形成させ、２組のアンテナ素子部材１２，１２の接続用端子１２ａ，１２ａを互いに電気的接続し、その後で、２組のアンテナ素子部材１２，１２の線状部を良導電金属板１０，１０から双方ともに切り離して、図６のごときアンテナ装置を完成させても良い。
【００２１】
なお、上記実施例では、２つの半円筒状部材１８，１８で形成する略円筒状は、その先端が閉塞されているが、開口されていても良く、適宜に設計すれば良い。
【００２２】
【発明の効果】
以上説明したところから明らかなように、本発明のアンテナ装置の製造方法は以下のごとき格別な効果を奏する。
【００２３】
請求項１ないし３記載のいずれのアンテナ装置の製造方法にあっても、連続的な一貫生産に好適であり、しかも一体成形される絶縁樹脂材を略円筒の中空とすることができる。そして、アンテナ素子部材に対して半円筒状部材が一体成形されるので、略円形螺旋状のピッチがずれるようなことがない。
【００２４】
請求項４記載のアンテナ装置の製造方法にあっては、良導電金属板の打ち抜きと、それを半円形に突出させて変形させるプレス加工を別工程としているので、簡単な板金機械を用いて作業することができる。
【００２５】
請求項５記載のアンテナ装置の製造方法にあっては、良導電金属板に接続金具を配設固定した後に半円筒状部材を一体成形するので、接続金具とこれが設けられた良導電金属板に形成される半円筒状部材とが一体的に固定され、接続金具を強固に固定することができる。
【図面の簡単な説明】
【図１】 フープ材としての薄い良導電金属板に打ち抜き加工した図である。
【図２】 図１のものにプレス加工した図である。
【図３】 図２のものに接続金具を固定した図である。
【図４】 図３のものに絶縁樹脂材を一体成型した図である。
【図５】 図４のものの一方をフープ材から切り離して他方に重ね合わせた図である。
【図６】 図５のものの他方もフープ材から切り離して完成したアンテナ装置の外観斜視図である。
【図７】 接続金具の拡大外観斜視図である。
【図８】 図４のＡ−Ａ断面矢視図である。
【図９】 図６のＢ−Ｂ断面矢視図である。
【符号の説明】
１０ 良導電金属板
１２ アンテナ素子部材
１２ａ 接続用端子
１４ 接続金具
１６ 線状部
１８ 半円筒状部材
２０ アンテナ装置[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for manufacturing an antenna device mainly used for a radio for mobile communication.
[0002]
[Prior art]
An example of an antenna device for a mobile communication device such as a mobile phone and a method for manufacturing the same are proposed in Japanese Patent Laid-Open No. 2001-57505. The technology proposed in this publication is as follows. First, a good conductive metal plate is punched out, and a plurality of continuous meander-like linear portions are formed so as to be folded back at both ends. In addition, the linear part is in the state connected to the highly conductive metal plate at both ends. Next, this is pressed, and a plurality of linear portions are alternately projected in a semicircular shape in the vertical direction to form a series of substantially circular spirals, and a connection fitting made of a highly conductive metal is disposed and fixed at one end thereof. Is done. Then, the insulating resin material is formed into a substantially cylindrical shape by insert molding so as to include the whole in a plurality of linear portions having a substantially circular spiral shape. Thereafter, both ends of the plurality of linear portions are separated from the highly conductive metal plate to complete the antenna device.
[0003]
Such an antenna device has a structure in which a plurality of linear portions forming a substantially circular spiral are arranged on the outer peripheral portion of a substantially cylindrical insulating resin material.
[0004]
[Problems to be solved by the invention]
In the above prior art, the insulating resin material formed integrally with a plurality of linear portions forming a circular spiral has a solid substantially cylindrical shape, and the antenna characteristic is based on the insulating resin material. Electrical influence as a dielectric is large. Moreover, since it is formed of a large amount of insulating resin, the weight is increased and the material cost is increased. Further, when the antenna device is fixed to the tip portion of the rod antenna, the connection strength is somewhat difficult because the tip portion of the rod antenna and the connection fitting of the antenna device are connected and fixed.
[0005]
The present invention has been made in view of the circumstances of the prior art, and a method of manufacturing an antenna device in which an insulating resin material that is integrally molded with a substantially circular spiral antenna element and fixed thereto is molded into a substantially cylindrical shape. The purpose is to provide.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, a method for manufacturing an antenna device according to the present invention includes two sets of a plurality of linear portions each having a shape obtained by punching a highly conductive metal plate and dividing a substantially circular spiral shape into two in the axial direction. Each of the antenna element members is formed with at least one end connected to the highly conductive metal plate, and the two antenna element members are formed by dividing the substantially cylindrical shape into two axial directions by molding an insulating resin material. Each of the semi-cylindrical members are integrally formed on the same axis, and one end of the antenna element member in which one semi-cylindrical member is integrally formed is separated from the well-conductive metal plate, The semi-cylindrical member from which the ends of the antenna element members are separated is overlapped with the other semi-cylindrical member to form the substantially cylindrical shape, and the opposing ends of the two sets of antenna element members are electrically connected to each other. The substantially circular screw Jo is formed, the other semi-cylindrical member formed of disconnect the ends of the integrally molded other set of the antenna element member from the highly conductive metal plate.
[0007]
In addition, by punching a highly conductive metal plate, at least one end portion of two sets of antenna element members each formed of a plurality of linear portions each having a substantially circular spiral shape divided into two in the axial direction is connected to the highly conductive metal plate. Each of the two antenna element members is integrally formed on the same axis by forming a semi-cylindrical member into a shape that is divided into two in the axial direction by molding the insulating resin material. And separating the end portions of the two sets of antenna element members from the highly conductive metal plate, overlapping the two semi-cylindrical members to form the substantially cylindrical shape, and facing the two sets of antenna element members. The ends may be electrically connected to each other to form the substantially circular spiral.
[0008]
The two conductive element metal plates are punched into two antenna element members each formed of a plurality of linear portions obtained by dividing the substantially circular spiral shape into two in the axial direction. A semi-cylindrical member having a substantially cylindrical shape divided into two in the axial direction is integrally formed on the same axis on the two sets of antenna element members by forming each of the antenna element members while being connected to the plate. The two highly conductive metal plates are overlapped so as to be formed and arranged, and the two semi-cylindrical members form a substantially cylindrical shape, and the opposing ends of the two sets of antenna element members are electrically connected to each other. May be connected to each other to form the substantially circular spiral shape, and then the ends of the two sets of antenna element members may be separated from the two highly conductive metal plates together.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a view of punching a thin conductive metal plate as a hoop material. FIG. 2 is a view obtained by pressing the one shown in FIG. FIG. 3 is a diagram in which a connection fitting is fixed to that of FIG. FIG. 4 is a view in which an insulating resin material is integrally formed with the structure shown in FIG. FIG. 5 is a view in which one of FIG. 4 is separated from the hoop material and superimposed on the other. 6 is an external perspective view of the antenna device completed by separating the other of FIG. 5 from the hoop material. FIG. 7 is an enlarged external perspective view of the connection fitting. 8 is a cross-sectional view taken along the line AA in FIG. 9 is a cross-sectional view taken along the line BB in FIG.
[0010]
First, as shown in FIG. 1, two sets of antenna element members 12 composed of a plurality of linear portions each having a shape obtained by punching a thin good conductive metal plate 10 as a hoop material into two in the axial direction by punching. 12 is formed in a state where at least one end portion of the linear portion is connected to the highly conductive metal plate 10. At the same time, a press-fit slit 16a for press-fitting and fixing the connection fitting 14 made of a highly conductive metal shown in FIG. 7 is formed in the linear portion 16 on one end side of one set of antenna element members 12. Here, the two sets of antenna element members 12 and 12 have a shape obtained by projecting a substantially circular spiral shape into two in the axial direction on the plane of the highly conductive metal plate 10.
[0011]
Next, as shown in FIG. 2, two sets of antenna element members 12, 12 are projected in the same direction by pressing to form a substantially semicircular shape. By this pressing, the two sets of antenna element members 12 and 12 have a shape obtained by dividing a substantially circular spiral shape into two in the axial direction.
[0012]
Then, as shown in FIG. 3, the connection fitting 14 is press-fitted and fixed to the press-fitting slit 16 provided on one end side of one set of the antenna element members 12. In the structure shown in FIG. 3, the one end portion of the antenna element member 12 and the connection fitting 14 are not yet electrically connected.
[0013]
Thereafter, as shown in FIG. 4, the well-conductive metal plate 10 that has been processed is inserted into a molding die of an insulating resin material, so that the two antenna element members 12 and 12 have a substantially cylindrical axis. Two semi-cylindrical members 18, 18 having a shape divided into two in the direction are integrally formed on the same axis. Here, as shown in FIG. 8, the two sets of antenna element members 12 and 12 are disposed on or near the outer peripheral surfaces of the semi-cylindrical members 18 and 18.
[0014]
Furthermore, both ends of the linear portions of one set of antenna element members 12 are separated from the highly conductive metal plate 10, and one semi-cylindrical member 18 formed integrally therewith has the other semi-cylindrical shape. Overlaid on the member 18, the two semi-cylindrical members 18, 18 form a cylinder. Here, when both ends of the linear portion of the antenna element member 12 are separated from the highly conductive metal plate 10, it is cut so as to provide connection terminals 12 a, 12 a. The The opposing connection terminals 12a, 12a... Of the two sets of antenna element members 12, 12 are electrically connected to each other, and a plurality of linear portions of the two sets of antenna element members 12, 12 form a substantially circular spiral. Is done. Moreover, one end of the formed substantially circular spiral linear portion is electrically connected to the linear portion 16 to which the connection fitting 14 is fixed by the connection terminal 12a. The electrical connection of these connection terminals 12a, 12a... May be by any means such as caulking, fusion, resistance welding, or soldering.
[0015]
Finally, both ends of the linear portions of the other set of antenna element members 12 not yet separated from the good conductive metal plate 10 are cut off from the good conductive metal plate 10 to complete the antenna device 20 as shown in FIG. .
[0016]
As shown in the cross-sectional view of FIG. 9, in the antenna device 20, the insulating resin material has a hollow and substantially cylindrical shape, and the influence of the insulating resin material as a dielectric on the antenna characteristics is reduced accordingly. Further, the amount of the insulating resin material required for molding is small, so that the weight can be reduced and the material cost can be reduced.
[0017]
Further, in the above embodiment, as shown in FIG. 9, the substantially cylindrical inner diameter formed by the two semi-cylindrical members 18, 18 is larger than the diameter of the through hole formed by penetrating through the connection fitting 14 in the axial direction. Although it is large, the same diameter may be used, and the tip of the rod antenna element may be inserted and fixed appropriately. Further, a female screw is engraved on the substantially cylindrical inner peripheral surface formed by the two semi-cylindrical members 18, 18, and the male screw provided at the wire end portion of the rod antenna element is screwed and inserted to be fixed. You may be able to do it.
[0018]
By the way, in the manufacturing method of the above embodiment, the highly conductive metal plate 10 is punched as shown in FIG. 1 and further pressed as shown in FIG. 2 to obtain a plurality of linear portions of the two sets of antenna element members 12 and 12. Is formed into a shape obtained by dividing the substantially circular spiral shape into two in the axial direction, but it goes without saying that the punching in FIG. 1 and the pressing in FIG. 2 may be performed in one step.
[0019]
Further, in the above embodiment, as shown in FIG. 5, two sets of antenna element members 12 in one set are separated from the highly conductive metal plate 10 and two semicylindrical members 18 and 18 are overlapped. After the connection terminals 12a, 12a... Of the antenna element members 12, 12 are electrically connected to each other, the linear portions of the other set of antenna element members 12 are separated from the highly conductive metal plate 10 to obtain an antenna as shown in FIG. Although the apparatus 20 is completed, the present invention is not limited to this, and from the state shown in FIG. 4, the linear portions of the two sets of antenna element members 12 and 12 are both separated from the highly conductive metal plate 10, and two semicylindrical shapes are formed. The antenna device 20 may be completed as shown in FIG. 6 by superimposing the members 18, 18 and electrically connecting the connection terminals 12a, 12a... Of the two sets of antenna element members 12, 12.
[0020]
And in the said Example, although two sets of antenna element members 12 and 12 are formed in the highly conductive metal plate 10 as one hoop material, it is not restricted to this, Two sets of antenna element members 12 and 12 are formed. May be formed on the highly conductive metal plates 10 and 10 as separate hoop materials. If these two sets of antenna element portions 12 and 12 are formed on the separate highly conductive metal plates 10 and 10, respectively, after the semi-cylindrical members 18 and 18 are molded, the respective sets of antenna element members 12 and 12 are formed. Two semiconductive cylindrical plates 18 and 18 are formed by superimposing the two well-conductive metal plates 10 and 10 formed by forming the two terminals of the antenna element members 12 and 12, and the connection terminals 12a and 12a. 12a may be electrically connected to each other, and then the linear portions of the two sets of antenna element members 12 and 12 may be separated from both of the conductive metal plates 10 and 10 to complete the antenna device as shown in FIG. .
[0021]
In the above embodiment, the substantially cylindrical shape formed by the two semi-cylindrical members 18 and 18 is closed at the tip, but may be opened and may be designed appropriately.
[0022]
【The invention's effect】
As is clear from the above description, the method for manufacturing an antenna device of the present invention has the following special effects.
[0023]
In any one of the methods for manufacturing an antenna device according to claims 1 to 3, it is suitable for continuous integrated production, and the insulating resin material that is integrally formed can be made substantially cylindrical hollow. Since the semi-cylindrical member is integrally formed with the antenna element member, the pitch of the substantially circular spiral is not shifted.
[0024]
In the method of manufacturing an antenna device according to claim 4, since the stamping of the highly conductive metal plate and the press working for projecting it into a semicircular shape are made as separate steps, the work is performed using a simple sheet metal machine. can do.
[0025]
In the manufacturing method of the antenna device according to claim 5, since the semi-cylindrical member is integrally formed after disposing and fixing the connection fitting to the highly conductive metal plate, the connection fitting and the good conductive metal plate provided with the connection fitting are formed. The formed semi-cylindrical member is fixed integrally, and the connection fitting can be firmly fixed.
[Brief description of the drawings]
FIG. 1 is a view of punching a thin good conductive metal plate as a hoop material.
FIG. 2 is a view obtained by pressing the one shown in FIG.
FIG. 3 is a view in which a connection fitting is fixed to that of FIG. 2;
4 is a view in which an insulating resin material is integrally formed with the structure shown in FIG. 3;
FIG. 5 is a diagram in which one of FIG. 4 is separated from the hoop material and superimposed on the other.
6 is an external perspective view of the antenna device completed by separating the other one of FIG. 5 from the hoop material. FIG.
FIG. 7 is an enlarged external perspective view of a connection fitting.
8 is a cross-sectional view taken along the line AA in FIG.
9 is a cross-sectional view taken along the line B-B in FIG. 6;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Good electroconductive metal plate 12 Antenna element member 12a Connection terminal 14 Connection metal fitting 16 Linear part 18 Semi-cylindrical member 20 Antenna apparatus

Claims (5)

良導電金属板を打ち抜き加工して、略円形螺旋状を軸方向に２分割した形状の複数の線状部からなる２組のアンテナ素子部材を少なくとも一端部を前記良導電金属板に接続した状態でそれぞれ形成し、絶縁樹脂材の成型加工により、前記２組のアンテナ素子部材に略円筒状を軸方向に２分割した形状の半円筒状部材を一体的に同一軸上にそれぞれ成形配設し、一方の半円筒状部材が一体成形された一方の組の前記アンテナ素子部材の端部を前記良導電金属板から切り離し、前記アンテナ素子部材の端部を切り離した前記半円筒状部材を他方の半円筒状部材に重ね合わせて前記略円筒状とし、前記２組のアンテナ素子部材の対向する端部を互いに電気的接続して、前記略円形螺旋状を形成し、他方の半円筒状部材が一体成形された他方の組の前記アンテナ素子部材の端部を前記良導電金属板から切り離してなることを特徴としたアンテナ装置の製造方法。  A state in which at least one end of two sets of antenna element members composed of a plurality of linear portions each having a shape obtained by punching a highly conductive metal plate into two parts in the shape of a substantially circular spiral in the axial direction is connected to the highly conductive metal plate The semi-cylindrical members each having a substantially cylindrical shape divided into two in the axial direction are integrally formed on the same axis by molding the insulating resin material. , One end of the antenna element member of one set integrally formed with one semi-cylindrical member is separated from the well-conductive metal plate, and the end of the antenna element member is separated from the other half-cylindrical member. The substantially cylindrical shape is superimposed on a semicylindrical member, and the opposing ends of the two sets of antenna element members are electrically connected to each other to form the substantially circular spiral shape, and the other semicylindrical member is In front of the other molded piece Method of manufacturing an antenna apparatus characterized by comprising disconnecting the end of the antenna element member from the highly conductive metal plate. 良導電金属板を打ち抜き加工して、略円形螺旋状を軸方向に２分割した形状の複数の線状部からなる２組のアンテナ素子部材を少なくとも一端部を前記良導電金属板に接続した状態でそれぞれ形成し、絶縁樹脂材の成型加工により、前記２組のアンテナ素子部材に略円筒状を軸方向に２分割した形状の半円筒状部材を一体的に同一軸上にそれぞれ成形配設し、前記２組のアンテナ素子部材の端部を前記良導電金属板からそれぞれ切り離し、前記２つの半円筒状部材を重ね合わせて前記略円筒状とし、前記２組のアンテナ素子部材の対向する端部を互いに電気的接続して前記略円形螺旋状を形成してなることを特徴としたアンテナ装置の製造方法。  A state in which at least one end of two sets of antenna element members composed of a plurality of linear portions each having a shape obtained by punching a highly conductive metal plate into two parts in the shape of a substantially circular spiral in the axial direction is connected to the highly conductive metal plate The semi-cylindrical members each having a substantially cylindrical shape divided into two in the axial direction are integrally formed on the same axis by molding the insulating resin material. The end portions of the two sets of antenna element members are separated from the highly conductive metal plate, and the two semi-cylindrical members are overlapped to form the substantially cylindrical shape. The opposite end portions of the two sets of antenna element members Are electrically connected to each other to form the substantially circular spiral shape. ２枚の良導電金属板を打ち抜き加工して、略円形螺旋状を軸方向に２分割した形状の複数の線状部からなる２組のアンテナ素子部材を少なくとも一端部を前記良導電金属板に接続した状態でそれぞれ形成し、絶縁樹脂材の成型加工により、前記２組のアンテナ素子部材に略円筒状を軸方向に２分割した形状の半円筒状部材を一体的に同一軸上にそれぞれ成形配設し、前記２つの半円筒状部材で略円筒状を形成するように前記２枚の良導電金属板を重ね合わせて、前記２組のアンテナ素子部材の対向する端部を互いに電気的接続して前記略円形螺旋状を形成し、その後に前記２組のアンテナ素子部材の端部を前記２枚の良導電金属板からともに切り離してなることを特徴としたアンテナ装置の製造方法。  Two good conductive metal plates are punched out, and at least one end of at least one end of the two antenna element members composed of a plurality of linear portions obtained by dividing a substantially circular spiral shape into two in the axial direction is used as the good conductive metal plate. Each of the two antenna element members is formed in a connected state, and a semi-cylindrical member having a substantially cylindrical shape divided into two in the axial direction is integrally formed on the same axis by molding the insulating resin material. The two highly conductive metal plates are overlapped so that the two semi-cylindrical members form a substantially cylindrical shape, and the opposing ends of the two antenna element members are electrically connected to each other. Then, the substantially circular spiral is formed, and then the end portions of the two sets of antenna element members are separated from the two well-conductive metal plates together. 請求項１ないし３記載のいずれかのアンテナ装置の製造方法において、良導電金属板を打ち抜いて、略円形螺旋状を軸方向に２分割した形状の２組のアンテナ素子部材を平面上に投影した形状に形成し、更に前記平面状の２組のアンテナ素子部材を同一方向に半円状に突出するようにプレス加工して前記略円形螺旋状を軸方向に２分割した形状に形成してなることを特徴としたアンテナ装置の製造方法。  4. The method of manufacturing an antenna device according to claim 1, wherein the two conductive antenna elements are formed by punching out a highly conductive metal plate and projecting a substantially circular spiral shape into two sets in the axial direction on a plane. Further, the two planar antenna element members are pressed so as to project in a semicircular shape in the same direction, and the substantially circular spiral shape is divided into two in the axial direction. An antenna device manufacturing method characterized by the above. 請求項１ないし３記載のいずれかのアンテナ装置の製造方法において、打ち抜き加工で形成された一方の組のアンテナ素子部材の軸方向の一端側に良導電金属からなる接続金具を配設固定した後に、前記絶縁樹脂加工を行い、前記接続金具に前記２組のアンテナ素子部材で形成された前記略円形螺旋状の前記アンテナ素子部材の一端を電気的接続してなることを特徴としたアンテナ装置の製造方法。  4. The method of manufacturing an antenna device according to claim 1, wherein a connection fitting made of a highly conductive metal is disposed and fixed on one end side in the axial direction of one set of antenna element members formed by punching. An antenna device comprising: an antenna device, wherein the insulating resin processing is performed, and one end of the substantially circular spiral antenna element member formed by the two sets of antenna element members is electrically connected to the connection fitting. Production method.
JP2001385792A 2001-12-19 2001-12-19 Method for manufacturing antenna device Expired - Fee Related JP3852684B2 (en)

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