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Mobile Phone Patent Abstract
An antenna structure for a PDA mobile phone, wherein, an insulating
main body of the antenna structure comprises a cap and a seat; the
cap has a coil receiving chamber and a passage juxtaposed with the
chamber; the seat is provided with a hole at a position in correspondence
with that of the coil receiving chamber for placing therein the
related coil, a metallic support and an elastic contacting piece;
an insertion connecting portion and a curved open channel communicating
with the passage are formed at a position in correspondence with
that of the passage; when the antenna structure is mounted on an
equipment, a PDA pen is adapted to inserting in position in the
curved open channel as a member thereof.
Mobile Phone Patent Claims
What is claimed is:
1. An antenna structure for a PDA mobile phone, wherein, an insulating
main body of said antenna structure comprises a cap and a seat;
said cap is hollow with a solid top surface and opening downwardly,
and has a coil receiving chamber and a passage juxtaposed with said
chamber; said seat is provided with a hole at a position in correspondence
with that of said coil receiving chamber for placing therein said
related coil, a metallic support and an elastic contacting piece;
an insertion connecting portion and a curved open channel communicating
with said passage are formed at a position in correspondence with
that of said passage; when said antenna structure is mounted on
an equipment, a PDA pen is adapted to inserting in position in said
curved open channel.
2. An antenna structure for a PDA mobile phone as defined in claim
1, wherein, said cap has a wall thickness increasing gradually downwardly,
a curved stop is formed at said passage on the external surface
of said cap.
3. An antenna structure for a PDA mobile phone as defined in claim
2, wherein, said PDA pen has a protrusion thereon to allow said
pen to be positioned at said curved stop.
4. An antenna structure for a PDA mobile phone as defined in claim
1, wherein, said hole of said seat is communicated with a hole of
a smaller diameter, in order that said metallic support is placed
thereon and a downwardly extending axle of said metallic support
is inserted therein to press contact one end of an elastic contacting
piece at a shoulder formed at the junction of said hole of said
seat and said hole of said smaller diameter by the force of a coil
placed on said metallic support.
5. An antenna structure for a PDA mobile phone as defined in claim
4, wherein, the bottom end of said coil is pressed against the inner
bottom surface of said metallic support, and its top end is pressed
against the inner top surface of said coil receiving chamber of
said cap.
Mobile Phone Patent Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention is related to an antenna structure for a
PDA mobile phone, and especially to an antenna structure of which
a positioning structure for a pen of the PDA is provided.
2. Description of the Prior Art
A helical coils made from a winding metallic strip is the main
element of an antenna used for signal receiving and emitting. Such
a helix antenna structure can affect in all aspects the functions
of the antenna. For example, in a helix antenna in a British patent
No. 2,206,243, the diameter of wire made of material such as copper
plated steel, the pitch of helix, the over all length etc. all affect
the set proper functions of the antenna. In a mobile phone using
such material of wire as an example, generally, the helix coil is
placed in an inner hole of an insulating external sleeve of the
body of the mobile phone in an elastically compressed state.
The mainstream of designing for modern mobile phones is miniaturization;
built-in microstrip antennas gradually substitute for conventional
coils. The helix antenna structures protrude from the surfaces of
the communication equipments have the advantages of inexpensiveness,
stability and reliability of frequency in communication etc., they
are widely used thereby in various communication equipments for
signal receiving and emitting.
Among the electronic equipments able to be carried with one's person,
in addition to mobile phones, there are personal digital assistants
(PDA). A PDA has been miniaturized, it is convenient to be carried
with one's person and operated by him. Miniaturized PDAs' have gradually
become the mainstream of the products of digital electronic processing
devices. In view of such tendency, some mobile phone manufacturers
combined the function of a PDA into a mobile phone. Such a PDA mobile
phone surely is attached with a pen for operating on the screen
of the PDA.
However, such an antenna structure for a PDA mobile phone needs
more space for placing a pen for operating on the screen of the
PDA in addition to the space for the exposed helix antenna. A PDA
mobile phone available now generally has the receiving spaces for
the antenna and the pen provided at two opposite sides of the PDA
mobile phone; this makes the whole space of the product occupied,
and surely is not benefit to further miniaturization of such product.
SUMMARY OF THE INVENTION
The object of the present invention is to provide an antenna structure
for a PDA mobile phone, an insulating body of the antenna is flat
with a predetermined size of volume, thereby, the constructing members
such as a coil and contact pieces etc. can be assembled in the equipment,
and a space of a lateral passage is left in order a pen for operating
can be stored and positioned in the lateral passage as a member
of the main body of the antenna.
In a preferred embodiment, the above stated space of the lateral
passage starts from the top and stops at the bottom of the main
body of the antenna to form an open channel and a curved stop in
cooperation with a protrusion provided on the pen for operating
the PDA to function as a positioning portion for placing and taking
the pen.
The present invention will be apparent in its novelty and other
characteristics after reading the detailed description of the preferred
embodiment thereof in reference to the accompanying drawings. Wherein:
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a preferred embodiment of the present
invention;
FIG. 2 is an analytic perspective view showing the elements of
FIG. 1;
FIG. 3 is a front view of FIG. 1;
FIG. 4 is a top view of FIG. 1;
FIG. 5 is a lateral sectional view of FIG. 1; and
FIG. 6 is a schematic view showing mounting of the antenna structure
of the present invention on a PDA mobile phone for placing and taking
the pen of the PDA.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to FIG. 1-5, in a preferred embodiment of the present
invention, the insulating main body of the antenna structure comprises
a cap 10 and a seat 20. The cap 10 is hollow with a solid top surface
11 and opening downwardly, and has a slightly larger width and a
wall thickness increasing gradually downwardly. The cap 10 with
a predetermined width renders itself to obtain a coil receiving
chamber 12 (referring to FIG. 3) and a space for a passage 13. In
the preferred embodiment shown, the passage 13 provided to match
with the pen for operating the PDA extends all the way from the
solid top surface 11 down to the bottom of the cap 10, by providing
the wall thickness increasing gradually downwardly of the cap 10,
a curved stop 14 can be formed on the external surface of the cap
10.
The seat 20 is provided with a circle of flange 21 at a predetermined
height thereon to position and connect the cap 10; and has a hole
22 at a position in correspondence with that of the coil receiving
chamber 12 mentioned above, the bottom of the hole 22 is reduced
to form a hole 23 of a smaller diameter (referring to FIG. 5) and
to form a shoulder 24 thereat. The seat 20 is provided with an insertion
connecting portion 25 at a position in correspondence with that
of the passage 13, and with a curved open channel 26 of which the
sectional area matches with that of the passage 13.
As shown in FIGS. 1 and 5, a metallic support 30 is placed in the
hole 22 with a downwardly extending axle 31 thereof inserting into
the hole 23 of a smaller diameter to press contact one end of an
elastic contacting piece 40, and is placed thereon with a coil 50.
The bottom end of the coil 50 is pressed against the metallic support
30, and its top end is pressed against the inner top surface of
the coil receiving chamber 12 of the cap 10.
As shown in FIG. 6, when the above stated antenna structure of
the present invention is mounted on the top surface of a PDA mobile
phone 60, the passage 13 provided thereon and the curved open channel
26 in communication with the passage 13 can allow insertion of a
PDA pen 70 on which a protrusion 71 is provided to allow the pen
70 to be positioned after it is inserted to make abutment of the
protrusion 71 on the curved stop 14. And the protrusion 71 can be
a force exerting point for picking out the pen 70.
The antenna of the PDA mobile phone 60 of the present invention
thereby can render the pen 70 to be placed as a member of the main
body of the antenna. Therefore, the allocation of space of the entire
equipment can be more variant and more suitable for miniaturization
of the equipment.
The preferred embodiment disclosed above is only for illustrating
the present invention. It will be apparent to those skilled in this
art that various modifications or changes can be made to the elements
of the present invention without departing from the spirit of this
invention. Accordingly, all such modifications and changes also
fall within the scope of the appended claims and are intended to
form part of this invention. |