Built-in antenna and its manufacturing method and fixing method, and electronic apparatus asing same

Abstract

Provided is a built-in antenna with high productivity, an electronic device using the built-in antenna, a method for manufacturing the built-in antenna and a method for installing the built-in antenna. When this built-in antenna 7 is manufactured, a plurality of penetrating holes 5 through which a plurality of protrusions 16 penetrate when the built-in antenna 7 is fixed to a housing side to be built in are progressively or simultaneously punched by a progressive die that can continuously perform processing from punching and bending. This forms the plurality of penetrating holes 5 in an area to be a radiating portion of a metal plate 1, stably performs the processing and improves the productivity of the built-in antenna 7. In addition, because of the existence of the penetrating holes 5, a special tool is not required, attaching man-hour is reduced, and the stability of attaching work is improved.

Description

technical field [0001] The present invention relates to a built-in antenna, an electronic device using the built-in antenna, a method of manufacturing the built-in antenna, and a method of fixing the built-in antenna. Background technique [0002] Generally, the built-in antenna used in mobile terminals such as mobile phones and personal computers is connected to the printed circuit board, the cover of the mobile phone body, etc., using the following structure, that is, the plastic molded body such as the printed circuit board and the cover. After the positioning protrusion penetrates the through hole for positioning, it is bonded with adhesive tape or the like to the antenna board (conductor plate) that punches the copper plate into a predetermined shape together with the through hole for positioning (for the first connection method, refer to, for example, the patent document 1 Japanese Patent Laying-Open No. 10-163748 (page 2, figure 2 )), or while fixing the positioning ...

AI Technical Summary

Problems solved by technology

[0003] However, with the expansion of the mobile phone market, the structure of fixing the antenna plate obtained by stamping a copper plate with adhesive tape and the structure of fixing it with screws after fixing it by heat welding have problems in terms of manufacturing efficiency.

In addition, there is a problem of limiting the degree of freedom in design and three-dimensional design required for mobile phones, and deteriorating antenna performance

[0004] According to the existing built-in antenna, it can be considered that in the first method, the process of affixing adhesive tape or the like to the built-in antenna body and the method of fixing the built-in antenna body in the mobile phone are not suitable for mass production. Adhesive tape etc. are the main cause of deterioration of antenna characteristics

[0005] In addition, in the second method, there are problems in that a dedicated thermal welding jig must be used, and individual operations must be performed separately, and in addition, because there is a screw fixing process, it is not suitable for mass production

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