JP3495723B2 - Mobile phone - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile phone equipped with an antenna that can be put in and taken out from the inside of a phone body.

[0002]

2. Description of the Related Art FIG. 7 shows a conventional handheld mobile phone. In FIG. 7A, 1 is the main body of the mobile phone, 2 is a telescopic antenna, 3 is a receiver, 4 is a transmitter,
Reference numeral 5 is a dial, and 6 is an indicator. FIG. 7B shows a usage state of this mobile phone. With the telescopic antenna 2 extended from the main body 1, while holding the main body 1 with the handset portion close to the ear, the transmitter portion can be used as the mouth. Use in close proximity.

[0003]

However, since the telescopic antenna of the conventional mobile phone described above is extended substantially parallel to the mobile phone main body at the time of use (the operating frequency is 10
At 0MHz or more, the antenna element length is λ / 4 and about 7c
It becomes m. ), When the mobile phone is small, the antenna element is close to the head, and in the case of a woman with long hair, the antenna may get in the hair and interfere. In addition, in terms of radio wave propagation, there is a problem that when the antenna element approaches the head, the antenna pattern and the antenna impedance change, which adversely affects the call.

The present invention solves such a conventional problem, and provides an excellent mobile phone in which the antenna does not obstruct the head during use, and the antenna pattern and antenna impedance change little. With the goal.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a connection holder for connecting an end portion of an antenna to a radio section when the antenna is pulled out and mechanically holding the antenna. The telephone provided on the top of the telephone body
The antenna is attached to an inclined portion which is inclined rearward with respect to the main body, and when the antenna is pulled out, the antenna is inclined in a direction away from the user's head.

[0006]

Therefore, according to the present invention, when the antenna is pulled out, the end portion thereof is electrically connected to the radio unit, and the antenna can be effectively used. No matter what, on the phone body
Tilts backward with respect to the main body of the telephone
Since it is pulled out in an inclined state according to the connection holder attached to the inclined portion , the tip end will be separated from the head and will not interfere with the user,
In addition, since it is possible to reduce changes in the antenna pattern and antenna impedance during use, it is possible to maintain good antenna characteristics during handheld communication.

[0007]

FIG. 1 shows the configuration of the first embodiment of the present invention. The overall configuration of the mobile phone is the same as that of the conventional example shown in FIG. In FIG. 1, 11 is a main body of a mobile phone, 12 is a telescopic antenna having a length of λ / 4 or 3λ / 4, 13 is a receiver, 14 is a transmitter, 15 is a dial, 1
6 is a display unit.

FIG. 2 is a sectional view of the retractable antenna 12 when it is stored in the main body 11 and when it is extended. Reference numeral 17 denotes an antenna stopper that constitutes a connection holder that electrically connects the end of the antenna to a wireless unit (not shown) when the antenna is pulled out, and 18 expands and contracts the telescopic antenna 12. It is a guide sleeve as a guide means for guiding. The guide sleeve 18 rises in a substantially straight line from the bottom of the mobile phone body 11 to the vicinity of the upper exit, and is inclined to the side opposite to the transmitter / receiver in order to incline the telescopic antenna 12 outward near the exit.

FIG. 3 is a sectional view showing the details of the connection holder with the antenna pulled out. Reference numeral 17 denotes an antenna stopper that constitutes the above-mentioned connection holder, and is used for the mobile phone body 1
It is attached to the upper part of 1 in an inclined state. 17a is an antenna stopper 17 for holding the telescopic antenna 12.
A holding spring mounted inside, 18 is a guide sleeve whose upper end is connected to the antenna stopper 17, and 19 is fitted to the antenna stopper 17, and when the telescopic antenna 12 is extended, the antenna stopper 17 and the holding spring 17a are fixed. It is a connection fitting that is electrically connected to a large-diameter base portion 12a formed at the end portion of the telescopic antenna 12 via the above, and electrically connects the telescopic antenna 12 to a radio unit (not shown).

Next, the operation of the first embodiment will be described. When not in use, the telescopic antenna 12 is shown in FIG.
As shown in FIG. 2, the guide sleeve 18 is housed in the main body 11, and at the time of use, it is extended along the guide sleeve 18 to the outside of the main body 11 for use, as shown in FIG. 2B. At this time, the connection holder that holds the distal end of the telescopic antenna 12 in a state where the telescopic antenna 12 is pulled out is the main body 1
Since the antenna 1 is tilted on the side opposite to the transmitter / receiver, the extended telescopic antenna 12 tilts outward with respect to the main body 11. Therefore, as shown in FIG. 1 (b), the tip side of the telescopic antenna 12 is separated from the head when making a call by bringing the handset portion of this mobile phone close to the ear and the transmitter portion close to the mouth. Since the telescopic antenna 12 does not interfere with the head, the antenna pattern has a shape close to a circle similar to that at the time of installation and use, and the antenna impedance also fluctuates, so that the antenna characteristics are stable and good. The communication status is obtained. Further, since the length of the telescopic antenna 12 is set to λ / 4 or 3λ / 4, it is possible to further reduce the change in the antenna pattern when the handheld device is used.

Further, according to the above-described embodiment, the upper portion of the guide sleeve 18 is inclined to the side opposite to the transmitter / receiver portion of the main body 11 like the connection holder, so that the telescopic antenna 1
Even when the 2 is stored or stretched, it can be smoothly performed along the guide sleeve 18. Then, with the telescopic antenna 12 stored,
The mobile phone body 11 except for the upper part of the guide sleeve 18
This telescopic antenna 1 is installed almost parallel to
Therefore, it is almost unnecessary to increase the thickness dimension of the mobile phone, and the mobile phone can be thin regardless of the inclination of the telescopic antenna 12.

FIG. 4 shows the configuration of the second embodiment of the present invention. In FIG. 4, reference numeral 21 denotes a main body of the mobile phone, 22
Is a telescopic antenna having a length of λ / 4 or 3λ / 4, 23 is an antenna stopper, 24 is a guide groove as guide means for guiding the telescopic antenna 22 to expand and contract, and 25 is a guide groove provided at the base of the telescopic antenna 22. 24 is a slider that moves within 24. The guide groove 24 is provided in the mobile phone body 1
From the bottom of 1 to the vicinity of the upper exit, rise in a substantially straight line,
In order to incline the telescopic antenna 22 to the outside in the vicinity of the outlet, the telescopic antenna 22 is inclined to the side opposite to the transmitter / receiver.

As shown in FIGS. 5 and 6, the slider 25 has two sets of pins 26 protruding on both sides thereof, and the pins 26 are fitted into the guide groove 24 and move in the groove.
Then, at the time of extension, the pin 26 rides on the recess 23a of the antenna stopper 23 formed by bending the leaf spring, and the position is fixed. That is, in this embodiment, the antenna stopper 23 constitutes a connection holder that holds the end portion of the extended telescopic antenna 22.

Therefore, also in this embodiment, as in the first embodiment, when the telescopic antenna 22 is not used, as shown in FIG. 4A, the guide groove 2 is formed in the main body 21.
4 is accommodated along the guide groove 24, and when used, it is extended along the guide groove 24 while being inclined to the outside of the main body 21. Therefore, the user's head is not obstructed by the extendable antenna 22 that is extended when the mobile phone is used, and the antenna characteristics are maintained well.

[0015]

As is apparent from the above embodiments, the present invention provides a connection holder for mechanically holding the end of the antenna when it is pulled out and electrically connecting it to the wireless section. , So that when the antenna is pulled out, the telephone body is held so as to be tilted backward with respect to the telephone body.
Tilt backwards with respect to the telephone body installed at the top
It is designed to be attached to a slanted slope , so
When the antenna is extended, the end of the antenna separates from the head and does not interfere with the user, and it is possible to reduce changes in the antenna pattern and antenna impedance during use. Can be kept good. Further, according to the present invention, the connection holder is simply attached in an inclined manner, and when the retractable antenna is stored, it may be stored in any manner, and its configuration is also very simple and simple. Have.

[Brief description of drawings]

FIG. 1A is an external perspective view of a mobile phone according to an embodiment of the present invention, and FIG. 1B is a usage state diagram of the mobile phone.

FIG. 2A is a schematic cross-sectional view of the mobile phone according to the first embodiment of the present invention when the antenna is housed, and FIG. 2B is a schematic cross-sectional view of the mobile phone when the antenna is extended.

FIG. 3 is an enlarged sectional view of an antenna stopper portion of the mobile phone.

FIG. 4A is a schematic sectional view of the second embodiment of the present invention when the antenna is housed, and FIG. 4B is a schematic sectional view of the mobile phone when the antenna is extended.

FIG. 5 is an enlarged sectional view of an antenna stopper portion of the mobile phone.

FIG. 6 is an enlarged exploded perspective view of an antenna stopper portion of the mobile phone.

FIG. 7A is an external perspective view of a conventional mobile phone. (B) Usage diagram of the mobile phone

[Explanation of symbols]

11, 21 Mobile phone body 12, 22 Telescopic antenna 17,23 Antenna stopper 18 Guide sleeve 19 Connection bracket 24 Guide groove 25 slider 26 pin

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Keigo Matsuura Inventor Keigo Matsuura 4-3-1 Tsunashima-higashi, Kohoku-ku, Yokohama, Kanagawa Matsushita Communication Industrial Co., Ltd. (56) Reference JP-A-6-188959 (JP, A) JP-A-4-336803 (JP, A) JP-A-4-72950 (JP, A) Actually opened 61-151408 (JP, U) Actually opened 57-193270 (JP, U) Actually opened 49-129452 (JP, U) Actual Kaihei 3-48903 (JP, U) Actual public Sho 36-25424 (JP, Y1) (58) Fields investigated (Int.Cl. ⁷ , DB name) H01Q 1/24 H04M 1 / 02

Claims (3)

(57) [Claims] And 1. A portable telephone main body, an antenna capable and out into the telephone body when the antenna is pulled out from the telephone body, mechanically holds the end portion of the antenna and the radio unit in with a connection holder for electrically connecting the antenna when pulled out the antenna to hold inclined rearward with respect to the phone body, the phone
Rear of the telephone body provided at the top of the machine body
A portable telephone in which the connection holder is attached to an inclined portion that is inclined toward one side . 2. A guide means, which serves as a guide for housing the antenna, is provided in the telephone body, and a main portion of the guide means is arranged substantially parallel to the telephone body, and a center line of the connection holder is provided. The mobile phone according to claim 1, wherein an angle formed between the center line of the main part of the guide means and the center line is an obtuse angle. 3. The guide means is a cylindrical guide sleeve for accommodating an antenna, the guide sleeve being substantially parallel to the telephone body and an inclined portion extending integrally from the upper end of the parallel portion. The mobile phone according to claim 2, wherein the mobile phone is formed of a portion, and an upper end portion of the inclined portion is connected to the connection holder.