JP2004088385A - Emergency charging device in portable communication apparatus equipped with antenna - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device capable of conducting emergency charging only by a portable communication apparatus even during going out, without purchasing a battery or carrying around a charger. <P>SOLUTION: A coil 4 is arranged at a housing 2 of an expandable antenna 1 of a cellular phone, and a magnet 3 is arranged near the coil 4 of the antenna 1. When emergency charging is conducted for a battery 6 of the cellular phone, the antenna 1 is expanded/contracted to move the magnet 3 within the coil 4 to generate electromotive force in the coil 4 and charge the battery 6. In one embodiment, using a piezoelectric device in place of the magnet and the coil, the antenna 1 is expanded/contracted to press the piezoelectric device, and electromotive force generated in the piezoelectric device charges the battery 6. In another embodiment, the antenna 1 employs a deformable configuration in an L shape, and an axis of the antenna 1 is coupled to a rotating shaft of a generator. The antenna 1 is rotated centering on the axis to generate electromotive force in the generator and to charge the battery 6. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an emergency charging device using an antenna in a portable communication device such as a mobile phone and a mobile phone.
With the development of portable communication devices such as mobile phones, convenience has increased, but at the same time battery consumption has increased. For this reason, the battery often runs out when going out. With the emergency charging device of the present invention, emergency communication of a portable communication device such as a mobile phone can be easily performed even when going out.
[0002]
[Prior art]
Conventionally, when charging a portable communication device such as a mobile phone while away from home, it is necessary to carry a dedicated charger and borrow a power supply to charge the battery or use a charging battery sold at a store. Was.
In the former case, it is inconvenient to carry a dedicated charger, and charging can be performed only in a place where a power source can be used. In the latter case, it is necessary to find a store where the battery can be purchased, and the burden on the user is increased because most of the charging batteries are disposable.
[0003]
[Problems to be solved by the invention]
As described above, in the related art, when a portable communication device such as a mobile phone runs out of battery when going out, communication cannot be performed unless the battery is charged by a charger or a battery is purchased.
The present invention has been made in view of the above circumstances, and an object of the present invention is to enable emergency charging with a portable communication device alone even when going out without carrying a charger or purchasing batteries. That is.
[0004]
[Means for Solving the Problems]
In the present invention, the above problems are solved as follows.
(1) A coil is provided in the storage portion of the antenna, and a magnet is provided near the coil of the antenna, the magnet is moved by the expansion and contraction movement of the antenna, and an electromotive force is applied to the coil by a change in a magnetic field caused by the movement of the magnet. To charge the battery of the portable communication device.
(2) A piezoelectric element is provided in the storage portion of the antenna, and when the antenna expands and contracts, the antenna presses the piezoelectric element to generate an electromotive force in the piezoelectric element to charge the battery of the portable communication device.
(3) A generator is provided in a storage portion of the antenna, a rotation axis of the generator is connected to the axis of the antenna, and the antenna is rotated about the axis to rotate the generator and generate an electromotive force. Generate and charge the battery of the portable communication device.
In the present invention, as described above, the antenna provided on the portable communication device is expanded and contracted or rotated about an axis, and the electromotive force is generated by a magnet and a coil, a piezoelectric element, or a generator to charge the battery. As a result, the battery can be urgently charged on the go without carrying around a dedicated charger.
[0005]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment in which the present invention is applied to a mobile phone will be described. However, the present invention can be applied to a mobile communication device such as a mobile phone in addition to the mobile phone.
As shown in FIG. 8, the mobile phone is provided with a telescopic antenna 1, and the antenna 1 is housed in the housing 2 when the antenna 1 is not used. In the embodiment described below, a magnet, a coil, a piezoelectric element, and a generator are provided in the storage unit 2 as described below, and the battery is charged using the telescopic antenna.
FIG. 1 is a diagram showing a first embodiment of the present invention. In this embodiment, as shown in FIG. 1A, a coil 4 is provided in a housing 2 of a telescopic antenna 1 of a mobile phone, and a magnet 3 is provided near the coil 4 of the antenna 1. The coil 4 is connected via a rectifier circuit 5 to a battery 6 built in the mobile phone.
[0006]
FIG. 1B is a diagram illustrating a detailed configuration of the storage unit 2. As shown in the figure, a coil 4 is provided on the outer periphery of the antenna housing 2, and the coil 4 is connected to a battery via a rectifier circuit 5. Further, a magnet 3 is provided on the antenna 1, and the magnet 3 is configured to move within the coil 4 by expanding and contracting the antenna 1.
When the battery 6 of the mobile phone is urgently charged, the antenna 1 is expanded and contracted to move the magnet 3 in the coil 4, and the coil 4 generates an electromotive force due to a change in the magnetic field due to the movement of the magnet.
[0007]
The alternating current generated in the coil 4 is rectified by the rectifier circuit 5 and supplied to the battery 6 to charge the battery 6.
That is, as shown in FIG. 2A, when the telescopic antenna 1 is extended, the magnet 3 moves upward, the magnetic field inside the coil 4 changes, and an electromotive force is generated in the coil according to Faraday's law.
As a result, a current flows in the coil 4 in the forward direction, a current flows from both ends of the coil 4 to the battery 6 via the rectifier circuit 5, and the battery is charged.
Similarly, as shown in FIG. 2B, when the telescopic antenna 1 is contracted, the magnet 4 moves downward, an electromotive force is generated in the coil 4, and a current flows in the coil 4 in the opposite direction. A current flows from both ends to the battery 6 via the rectifier circuit 5, and the battery 6 is charged.
In order to increase the power generated by the above operation, for example, a plurality of coils 4 may be connected in parallel as shown in FIG. As a result, it is possible to generate electric power required for an emergency call. Further, the number of turns of the coil 4 may be increased to increase the generated power.
[0008]
FIG. 4 is a diagram showing a second embodiment of the present invention. In the present embodiment, as shown in FIG. 4A, a piezoelectric element 7 is provided in a storage section 2 of a telescopic antenna 1 of a mobile phone, and the piezoelectric element is connected to a battery 6 built in the mobile phone.
FIG. 4B is a diagram illustrating a detailed configuration of the storage unit 2. As shown in the figure, a piezoelectric element 7 is provided in the antenna housing section 2, and a contact section 8 is provided at an end of the antenna 1 to be in contact with the piezoelectric element 7. The piezoelectric element 7 is configured to be pressed.
When the battery 6 of the mobile phone is urgently charged, the piezoelectric element 7 is pressed by the contact portion 8 by expanding and contracting the antenna 1, and the battery 6 is charged by the electromotive force generated in the piezoelectric element 7.
That is, as shown in FIG. 5, when the antenna 1 is expanded and contracted, when the antenna 1 is contracted, the piezoelectric element 7 is pressed to generate a voltage. As a result, current flows from the piezoelectric element 7 to the battery 6, and the battery 6 built in the mobile phone is charged.
[0009]
FIG. 6 is a diagram showing a third embodiment of the present invention. In this embodiment, as shown in FIGS. 6 (a) and 6 (b), the telescopic antenna 1 of the mobile phone is configured to be deformable into an L-shape. The output of the generator 9 is connected to the battery 6 built in the mobile phone via the rectifier circuit 5.
The antenna 1 is provided with a movable portion 1a, for example, as shown in FIG. 7A, and is configured so that the antenna 1 is extended and the antenna 1 is bent at the movable portion 1a to be deformed into an L-shape. . When the antenna 1 is extended, the antenna 1 has a double structure so that the generator 9 does not move, for example, as shown in FIG. 7B, the outer antenna 1b is fixed, and the movable portion is fixed to the inner antenna 1c. 1a may be provided so that the antenna 1 can be deformed into an L-shape with the antenna 1 extended.
[0010]
When the battery 6 of the mobile phone is urgently charged, the antenna 1 is bent into an L-shape as described above, and the L-shaped bent portion is rotated by a finger or the like to be connected to the axis of the antenna 1. The generator 9 is rotated.
The output of the generator 9 is connected to the battery 6 built in the mobile phone via the rectifier circuit 5, and the rotation causes a current to flow from the generator 9 to the battery 6, thereby charging the battery 6.
When a DC generator is used as the generator 9, the output of the generator 9 may be directly connected to the battery without using the rectifier circuit 5. When the antenna 1 has a structure that can be easily rotated about an axis, it is not always necessary to deform the antenna into an L shape.
[0011]
【The invention's effect】
As described above, in the present invention, a battery built in a mobile phone is provided by providing an antenna housing with a coil and a magnet, a piezoelectric element, or a power generating element such as a generator, by an electromotive force generated by expansion and contraction or rotation of the antenna. , The battery of the mobile phone can be easily charged on the go, which greatly contributes to the improvement of the convenience of the mobile phone.
[Brief description of the drawings]
FIG. 1 is a diagram showing a first embodiment of the present invention.
FIG. 2 is a diagram illustrating a power generation operation in the first embodiment of the present invention.
FIG. 3 is a diagram illustrating a case where a plurality of coils are connected in parallel;
FIG. 4 is a diagram showing a second embodiment of the present invention.
FIG. 5 is a diagram illustrating a power generation operation in a second embodiment of the present invention.
FIG. 6 is a diagram showing a third embodiment of the present invention.
FIG. 7 is a diagram illustrating a structural example of an antenna.
FIG. 8 is a diagram showing an appearance of a generally used mobile phone.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Antenna 1a Movable part 2 Antenna storage part 3 Magnet 4 Coil 5 Rectifier circuit 6 Battery 7 Piezoelectric element 8 Contact part 9 Generator

Claims (3)

An emergency charging device in a portable communication device having an antenna,
A coil is provided in a storage portion of the antenna, and a magnet is provided near the coil of the antenna,
Emergency charging in a portable communication device, characterized in that the magnet is moved by expansion and contraction of the antenna, an electromotive force is generated in the coil by a change in a magnetic field caused by movement of the magnet, and a battery of the portable communication device is charged. apparatus. An emergency charging device in a portable communication device having an antenna,
A piezoelectric element is provided in the storage part of the antenna,
An emergency charging device in a portable communication device, wherein the piezoelectric device is pressed by the antenna when the antenna expands and contracts to generate an electromotive force in the piezoelectric device to charge a battery of the portable communication device. An emergency charging device in a portable communication device having an antenna,
A generator is provided in a storage portion of the antenna, and a rotation axis of the generator and an axis of the antenna are connected,
An emergency charging device for a portable communication device, wherein the antenna is rotated about the axis to rotate the generator to generate an electromotive force and charge a battery of the portable communication device.

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