JPH04306942A - Portable telephone set - Google Patents

Abstract

PURPOSE:To attain talking with excellent quality by selecting the antenna matching in the best state in a portable telephone set in which the telephone set is formed telescopically or foldably. CONSTITUTION:The telephone set is provided with a mechanism means stretching a handset 4 and an antenna simultaneously externally through the use of a conductor of a handset support fixture 5 able to be contained as the antenna and the operation of a handset form and with an antenna matching changeover means in interlocking with the mechanism means to obtain the best radiation efficiency at all times and to attain excellent talking.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile telephone device with a telescoping device and a transceiver function.

0002

2. Description of the Related Art In recent years, mobile telephone devices have become widely used as their convenience and economy have improved.

[0003] A conventional mobile phone device will be explained below with reference to FIG. As shown in the figure, the display unit 1 displays numbers, symbols, and operation functions input using the keyboard 2. Further, the receiver 3 allows listening to the voice of the other party during a call, and the transmitter 4 is supported by a transmitter support and can be pulled out from the main body. The sound generator 6 is designed to emit a calling sound and a confirmation sound when operating the keyboard 2, and an antenna 7 for transmitting and receiving is attached so as to be extendable and retractable as necessary.

[0004] The operation of the mobile phone device configured as described above will be explained below. First, when the power is off, the transmitter 4 and antenna 7 are connected as shown in FIG. 4(a).
The antenna 7 is kept in a stored state for convenient portability, and when the power is turned on and the antenna 7 is in a standby state, as shown in FIG. 4(b), the antenna 7 is extended and carried around. Next, when a ringing tone is emitted from the sounder 6 and you respond to the call, or when you make a call as necessary, the handset 4 is extended to form a handset as shown in FIG. 4(c), and the keyboard 2 You can make calls by operating the . At the end of the call, operate keyboard 2 to disconnect the call, then press the button shown in Figure 4 (
The device is placed in the state shown in a) or FIG. 4(b) and stands by in preparation for the next call.

[0005]

[Problems to be Solved by the Invention] However, in the above-mentioned conventional configuration, when the antenna 7 needs to be extended or contracted while the mobile phone device is in use, or if it is necessary to carry it while it is extended, the antenna 7 The antenna 7 is often carried without being fully extended because it may get in the way, and it is difficult to make calls using such an antenna, such as by using a shortened antenna that does not require extension or contraction. had the problem that the radiation efficiency of the antenna was poor, making it difficult to make comfortable calls.

The present invention solves the above-mentioned conventional problems, and aims to provide a mobile phone device that can switch antenna matching to the best condition.

[0007]

[Means for Solving the Problems] In order to achieve the above object, the present invention uses a conductor of a retractable transmitter support as an antenna, and operates the transmitter in the form of a handset. and a mechanism means for simultaneously extending the antenna to the outside, and an antenna matching device switching means interlocked with this mechanism means.

[0008]

[Operation] In the above-mentioned configuration, the present invention switches the antenna matching box to a state with high radiation efficiency as a built-in antenna when stored, and further switches the antenna matching box to a state with the best radiation efficiency in accordance with the operation of changing to the handset mode. By switching, it is possible to always perform smooth communication with good communication status.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A mobile telephone device according to an embodiment of the present invention will be described below with reference to FIGS. 1 to 3. Note that the same numbers are used for the same constituent members as those explained in the conventional example.

As shown in the figure, the transmitter 4 provided on the main body of the mobile phone device can be easily converted into a handset by operating and pulling out the transmitter support 5 which also serves as an antenna. be. At this time, the fixture 8 for smoothly supporting the sliding movement of the transmitter support 5 is made of a conductor, and the conductor of the transmitter support 5 and the fixture 8 are constructed so that they are always in contact and conductive. There is. The fixture 8 is fixed with holders 9 at several locations, and a detection switch 10 provided so that a part of the sliding part of the transmitter support 5 comes into contact detects that the transmitter 4 is stored. do. By pulling out the transmitter 4, the detection switch 10 is switched and the handset mode can be detected. The transmitter signal wire 11 guides the electrical audio signal from the transmitter 4 to a transmitter circuit (not shown), and is wired so that it can move flexibly in accordance with the sliding movement of the transmitter support 5. has been done. Further, the high frequency cable 12 is connected to an antenna.

FIG. 3 is a block diagram of the antenna matching device of the mobile phone device according to this embodiment (displays of the transmitting section, receiving section, control section, peripheral circuits, etc. are omitted).
Since the transmitter 4 is housed in the standby state in which the power is on, the detection switch 14 detects that the antenna 15 is present inside the mobile phone device. Therefore, the antenna matching switching circuit 16 switches to match the antenna 15 in the retracted state. Therefore, even when the transmitter 4 is not stretched out, it is possible to smoothly carry out call communication in the standby state. To make a further call, by stretching the transmitter 4, the detection switch 14
detects that it is in the handset format, and the antenna matching switching circuit 16 switches to the state with the best radiation efficiency in the extended state of the antenna 15, so that a telephone conversation can be made.

[0012] It goes without saying that this mechanical means is not limited to mobile phone devices, but can also be applied to mobile transceivers and the like.

[0013]

[Effects of the Invention] As is clear from the above description of the embodiments, according to the present invention, the transmitter is made to have an expandable structure and the transmitter support is used as an antenna, so that it can be adjusted according to the situation. It has a structure that allows it to be used as a handset, and at the same time, the antenna can also be expanded and contracted, and the antenna matching can be automatically switched to the best condition whether the antenna is built-in or pulled out. ,
This eliminates the need for deterioration in call quality due to a decrease in electric field strength due to antenna mismatch, and the need for delicate communication operation techniques to compensate for this, so smooth communication can always be performed with good call conditions.

[Brief explanation of drawings]

FIG. 1 is an external perspective view of a mobile phone device according to an embodiment of the present invention.

[Fig. 2] (a) is a partially cutaway perspective view of the transmitter stored in the main body; (b) is a partially cutaway perspective view of the transmitter extended from the main body;

[Figure 3] Block diagram of the same mobile phone device

FIG. 4(a) is an external perspective view of a conventional mobile phone device with the transmitter and antenna stored in the main body; FIG. 4(b) is a perspective view of the conventional mobile phone device with the transmitter stored in the main body and the antenna extended; External perspective view (c) is a perspective view of the same with the transmitter and antenna extended from the main body.

[Explanation of symbols]

2 Keyboard ３　　　　　　　　　　　　Telephone receiver 4 Transmitter 5. Transmitter support 14 Detection switch 15 Antenna 16 Antenna matching switching circuit

Claims (1)

[Claims] [Claim 1] A keyboard, a handset, and an antenna that can be freely extended from the main body, the conductor of a handset support being used for the antenna, and the handset and antenna can be connected by performing an operation to make it into a handset. A mobile phone device comprising a mechanism means for simultaneously extending the external signal and an antenna matching device switching means interlocked with the mechanism means.