The present invention relates to an antenna installation structure of an information terminal, and more particularly to an installation structure of an antenna of an antenna built-in type information terminal.
Conventionally, a cellular phone is an example of an antenna built-in type information terminal. Some of cellular phones, which are of a folding type, have an antenna in the antenna-holding part of the main body for sending and receiving radio waves.
Some of conventional cellular phones have an antenna built in the main body. This built-in antenna is installed in the main body by soldering a straight built-in antenna or a coiled built-in antenna directly on the board or by fixing a plate-like antenna in the fixing position within the main body with a double-faced tape.
The problem with those antenna installation structures is that they require much installation labor and therefore long working hours.
It is an object of the present invention to provide an antenna installation structure, which makes it easy to hold or assemble an antenna and to disassemble an antenna, and an information terminal that has the antenna.
The antenna installation structure according to the present invention has an antenna unit including an antenna element and a power feeder; and an antenna installation part in which the antenna unit can be removably installed. The power feeder comprises a terminal moved by an elastic member. The antenna unit installation part is provided with end fixing means for fixing axial-direction ends of the antenna unit and vibration preventing means for preventing the antenna unit from vibrating in order to secure the antenna unit.
The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings wherein:
A plurality of vibration preventing ribs 10 are provided in the circumferential portion of the frame of the antenna installation part 8 to secure the antenna unit in the correct position when it is stored. Instead of providing the antenna installation part 8 within the main body 7, the antenna unit may also be secured by a component such as a frame within the cellular phone.
As shown in
To seat the antenna unit in the antenna installation part, do the following steps. As shown in
Referring to
As described above, the antenna unit according to the present invention has a moving pin terminal in the power feeder thereof to connect the antenna unit with the printed circuit board. This makes it possible to easily assemble an antenna without soldering and to easily remove (disassemble) the antenna unit.
Increased accuracy in the shape of the antenna installation part increases the accuracy of the antenna position, thus ensuring the reliable antenna unit position.
Building an antenna unit in a cellular phone eliminates the need for a cylinder-like swell found on a conventional cellular phone that has a telescopic antenna. This reduces cellular phone design limitations.
While this invention has been described in connection with certain preferred embodiments, it is to be understood that the subject matter encompassed by way of this invention is not to be limited to those specific embodiments. On the contrary, it is intended for the subject matter of the invention to include all alternatives, modifications and equivalents as can be included within the spirit and scope of the following claims.
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2002-047787 | Feb 2002 | JP | national |
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Number | Date | Country | |
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20030160729 A1 | Aug 2003 | US |