JPH10163723A - Antenna structure for portable radio equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an antenna structure for portable radio equipment which improves portability and speech characteristics. SOLUTION: The casing of main body unit 1 incorporating a radio communication circuit is composed of a front cover 11 and a rear cover 12. An antenna part 2 is arranged outside this casing and connected with the radio communication circuit. In case of housing and carrying, the antenna part 2 is arranged inside an antenna housing part 3 positioned inside the outline of main body unit 1 and the danger of destruction is reduced. At the time of speaking, at least a top end part 21b of antenna 21 is projected outside the outline of main body unit 1 and the speech characteristics of this portable radio equipment are secured. A rotary shaft 23 held on the rear cover 12 and holding an antenna case 22 for protecting the antenna 21 connects the main body unit 1 and the antenna 21 and enables the turn of antenna part 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antenna structure of a portable wireless device, and more particularly to an antenna structure of a portable wireless device excellent in portability and communication characteristics.

[0002]

2. Description of the Related Art An antenna structure of a conventional portable radio device of this type is disclosed in Japanese Patent Application Laid-Open No. Hei 5-37217 (title of the invention: antenna with a rotating mechanism). The antenna structure of the disclosed portable wireless device has a structure as shown in a vertical sectional view of FIG.

In this portable wireless device, a conductive unit having a wireless communication circuit 31 built-in, one end of which is connected to the wireless communication circuit 31 and the other end of which penetrates the body unit 3 and protrudes outside the body. Sex fixed shaft 4 is fixed. Then, the antenna portion rotatably inserts the protruding portion of the fixed shaft 4 into a hole provided in the base 51 of the antenna 5, and the conductive elasticity disposed inside the hole at the base 51 of the antenna 5. The urging means 53 elastically urges the conductive contact member 52 against the outer peripheral surface of the fixed shaft 4 to press the antenna 5 and the wireless communication circuit 31 together.
The structure is such that they are electrically connected via the fixed shaft 2 and the fixed shaft 4.

The antenna structure of the above-mentioned conventional portable radio device has a structure in which the antenna portion is arranged outside the outline of the main unit. It was difficult to carry in a bag or bag.

[0004] The antenna structure of the portable wireless device is as follows.
Even when the antenna is stored, the antenna protrudes from the main unit, so it is easy to damage the antenna,
In addition, there is a drawback that the user is more likely to be injured by the damage.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-mentioned drawbacks of the prior art, to make the antenna unit housed within the outline of the main unit to make it easy to carry, and to reduce the possibility of damage to the antenna unit during storage and during carrying. It is an object of the present invention to provide an antenna structure of a portable wireless device that has reduced the risk of injury to a user and improved safety.

[0006]

According to the present invention, there is provided an antenna structure of a portable wireless device in which an antenna portion is disposed outside a main body unit having a built-in wireless communication circuit. Sometimes, the antenna unit is disposed in the antenna housing portion located within the outline of the main unit, and at least the tip end protrudes out of the outline of the main unit during a call.

[0007] The antenna structure of the portable wireless device is configured such that the antenna portion is rotatable around a rotation axis provided in the antenna housing portion in a direction in which a tip end portion thereof is separated from a rear cover of the main unit. Can be taken.

One of the antenna structures of the portable wireless device is as follows.
The antenna element of the antenna unit can be housed in the antenna case except for the tip when it is housed, and at least a part coupled to the tip can be pulled out in the axial direction of the antenna case when talking. Can be taken.

Another one of the antenna structures of the portable wireless device is that the antenna element and the wireless communication circuit are connected to each other by elastic contact with the rotating shaft by a contact contact fixed to each of the two. Configuration can be taken.

[0010]

Next, the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of an antenna structure of a portable wireless device according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the embodiment of FIG. FIG. 3 is a vertical view of the embodiment of FIG.

First, the configuration of the portable wireless device according to the present embodiment will be described with reference to FIGS. This portable wireless device, which is a portable telephone, has an antenna unit 2 connected to the outside of a main unit 1.

The main unit 1 forms a housing with a front cover 11 and a rear cover 12. A wireless communication circuit 15 that forms a main circuit of the mobile phone is disposed in the housing of the main unit 1. On the surface of the front cover 11, a transmission / reception unit, an operation unit, a display unit, and the like of the portable wireless device (not shown) are arranged. At one corner on the outside of the rear cover 12, the external dimensions are set to the dimensions a and b, respectively, in the inward direction.
In addition, an antenna housing 13 (a range indicated by a two-dot chain line in FIG. 1) having a rectangular parallelepiped shape reduced by c and c is formed. Outline of front cover 11 and antenna housing 13
The outline of the rear cover 11 to which the
Make an outline. The front cover 11 and the rear cover 12 are formed of an insulator such as plastics.

The antenna section 2 includes an antenna 21 as an antenna element, and an antenna case 22 having a substantially cylindrical shape capable of accommodating the antenna 21 except for a tip 21b thereof. The antenna unit 2 is held on the main unit 1 by a rotating shaft 23 held on the rear cover 12. The rotation shaft 23 is projected from the side surface of the rear cover 12 in the vertical direction, in the direction of the antenna housing 13, and not to go outside from the outer shape of the main unit 1.
The axis of the antenna unit 2 is orthogonal to the rotation axis 23. The rotation shaft 23 is capable of rotating the antenna unit 2 in a direction in which the tip portion 21b is separated from the rear cover 12 with the rotation shaft serving as a fulcrum. The rotating shaft 23 is made of a conductive material such as a metal, and holds the antenna unit 2 on a side surface of the antenna case 22 by a known means.

The antenna 21 can be in a stored state (or a portable state) in which it is accommodated in the antenna case 22 except for its tip 21b, and a call state in which a portion following the tip 21b also jumps out of the antenna case 22. These two states are executed using well-known means such as locking means using a hook or the like and elastic biasing means using a spring or the like. The outer dimensions of the antenna unit 2 are designed to remain inside the antenna housing unit 13 in the housed state, that is, to stay within the outline of the main unit 1. In the above-mentioned communication state, the antenna 21 is extended from the antenna case 22 in the axial direction by extending the front end portion 21b and the base portion 21a of the antenna 21 so that at least the front end portion 2
1 b is designed to project outside the antenna housing 13, that is, outside the outline of the main unit 1.

Here, the wireless communication circuit 15 is in contact
4 is fixedly connected to one end 14b of the antenna 2.
One base 21 a fixedly connects one end 24 b of the contact canag 24. The contact canags 14 and 24 are formed of a metal elastic body, and the other end 1
4a and the other end 24a of the contact canag 24 are always connected to the rotating shaft 23 by elastic contact. Therefore, even if the antenna unit 2 rotates about the rotation axis 23, the wireless communication circuit 15 of the main unit 1 and the antenna 21 of the antenna unit 2 are always connected.

Next, the operation of the portable wireless device according to the present embodiment will be described.

To change the antenna unit 2 from the talking state to the stowed state or the portable state, first, the distal end 2
1b is pushed in until it contacts the antenna case 22. Next, the antenna case 22 is connected to the tip 21 b of the antenna 21.
Is pushed in the direction (B direction in the figure) approaching the rear cover 12.
Then, the antenna case 22 rotates about the rotation shaft 23, and the antenna unit 2 is housed in the antenna housing 13 of the main unit 1, that is, in the outline of the main unit 1. Therefore, in the form radio apparatus of the present embodiment, the antenna unit 2 does not protrude outside the outline of the main unit 1 when the antenna is housed, so that it is easy to carry in a pocket or a handbag. The possibility that the antenna 2 will be caught and damaged by the object 2 is reduced, so that the risk of injury to the user due to the damage of the antenna unit 2 is reduced.

On the other hand, when the antenna section is changed from the stowed state or the portable state to the talking state, the end portion 21b is pinched and the portion following the end portion 21b of the antenna 21 is placed in the antenna case 2.
2 and then the antenna 21 or the antenna case 22 is pulled in a direction (direction A in the figure) in which the tip 21b moves away from the rear cover 12. Then, antenna case 2
2 rotates around the rotation shaft 23, and a portion including at least the tip portion 21 a of the antenna portion 2 protrudes from the antenna housing portion 13, that is, protrudes out of the outline of the main unit 1. In this way, when the antenna 21 is separated from the rear cover 12, the radiation characteristics of the antenna 21 are improved, and the communication characteristics of the portable wireless device according to the present embodiment are improved. Note that the tip 21b of the antenna unit 2 does not necessarily need to be rotated in a direction away from the rear cover 12;
Even if b is simply extended in the direction parallel to the side surface of the rear cover 12, it is possible to keep the communication characteristics of the portable wireless device from deteriorating to a small extent.

[0019]

As described above, according to the antenna structure of the portable wireless device according to the present invention, the antenna portion is arranged in the antenna housing portion located within the outline of the main unit when housed, and at least the tip portion is used when talking. Since it is configured to protrude out of the outline of the main unit, it is excellent in portability and excellent in call characteristics.

That is, in the portable wireless device of the present invention, since the antenna section is housed within the outline of the main unit,
As long as there is only the external space of the main unit, the portable unit can be carried. During a call, the antenna portion protrudes outside the external line of the main unit and is separated from the human body, so that good call characteristics can be obtained.

Further, in the portable wireless device of the present invention, when the portable radio device is carried, the antenna portion is housed within the outline of the main unit and does not protrude outside the outline. There is no contact with an object, and there is an effect that the risk of injury to the user due to breakage or protrusion of the antenna portion is reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of an antenna structure of a portable wireless device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the embodiment of FIG.

FIG. 3 is a vertical view of the embodiment of FIG. 1;

FIG. 4 is a longitudinal sectional view of an antenna structure of an electronic device according to the related art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body unit 11 Front cover 12 Rear cover 13 Antenna storing part 14 Contact canag 14a, 14b end part 15 Radio communication circuit 2 Antenna part 21 Antenna 21a Base part 21b Tip part 22 Antenna case 23 Rotation axis 24 Contact canag 24a, 24b End part

Claims (4)

[Claims] 1. An antenna structure for a portable wireless device in which an antenna unit is disposed outside a main unit incorporating a wireless communication circuit, wherein the antenna unit is provided in an antenna housing portion positioned within an outline of the main unit when housed. An antenna structure for a portable wireless device, wherein at least a distal end portion of the portable wireless device is protruded out of an outline of the main unit during a call. 2. The antenna unit according to claim 1, wherein the antenna unit is rotatable about a rotation shaft provided in the antenna housing portion in a direction in which a tip end portion of the antenna unit is separated from a rear cover of the main unit. Antenna structure of portable radio. 3. The antenna element of the antenna unit can be stored in an antenna case except for a tip portion thereof when stored, and at least a part of the antenna element coupled to the tip portion is extended in an axial direction of the antenna case during a call. The antenna structure for a portable wireless device according to claim 2, wherein the antenna structure can be pulled out. 4. The portable wireless device according to claim 2, wherein the antenna element and the wireless communication circuit are connected to each other by elastic contact with the rotating shaft by a contact contact fixed to each of the two. Machine antenna structure.