JPH10209905A - Portable radio equipment and antenna device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a built-in antenna to correspond a vertically polarized wave even when a casing is placed horizontal by drawing and fixing a microphone arm vertically to the casing concerning a portable telephone set for which the antenna is built in the microphone arm to be housed in the casing while being put in order as well. SOLUTION: In a miniaturized portable telephone set 10A, a slot 16 for terminal connection is provided on the base 11b of its casing 11, and a turning shaft part 22 of microphone arm is freely turnably coupled to a terminal part on the side of the base. The base part of microphone arm is held by a holding mechanism provided with a compression spring and a cam forming an engage groove so that the casing 11 and the microphone arm can be put in order under standby, can cross at a prescribed angle at a speaking position 21P and can cross vertically to the casing 11 placed horizontal on a desk at a data communication position 21D.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable radio device and an antenna device suitable for use with a portable communication terminal, for example.

[0002]

2. Description of the Related Art In recent years, there has been a demand for smaller and lighter portable telephones in order to improve portability. In response to this demand, portable telephones are housed in a main body when being carried and are pulled out from the main body during a call. Are widely used.

In this way, the antenna is prevented from being damaged when being carried, and the length of the antenna (effective height) is increased during a call, so that the antenna is affected by the human body, especially the head.
Deterioration of radiation characteristics such as a decrease in antenna gain can be avoided, and communication quality can be improved.

On the other hand, with the further miniaturization of mobile phones,
On the main unit, the distance between the transmitter (microphone) and the receiver (speaker) cannot be maintained equal to the distance between the human mouth and the ear. It has been proposed that the microphone arm is housed in a rotating part (microphone arm) capable of storing the microphone arm when carrying, and is pulled out during a call so that the microphone is positioned at the mouth.

Further, as shown in FIG. 11, by incorporating an antenna in the microphone arm, during a call,
There is also known a small mobile phone in which an antenna and a microphone can be pulled out in one action.

That is, in a conventional small portable telephone 10 as shown in FIG. 11, an opening 12 for a receiver (speaker) is usually formed in the front of a housing 11 of the telephone body, and a dial key is provided. Operation keys 13 are provided. Further, a liquid crystal display element 14 is provided between the opening 12 and the operation keys 13. Although not shown, a circuit board on which an RF transmission / reception circuit, an antenna matching circuit, a sound processing circuit, and the like are mounted is housed in the housing 11, and the RF transmission / reception circuit and the antenna matching circuit are provided in a shield case. It is arranged in.

On the right side of the right side wall 11r of the housing 11 made of a suitable synthetic resin material, a protection plate 15 having an L-shaped cross section is provided integrally with the housing 11. Also, the housing 11
A small diameter turning shaft 22a of a turning end 22 of a microphone arm 21 made of an appropriate synthetic resin material is rotatably engaged with a lower end of the right side wall 11r.

The free end 21f of the microphone arm 21
Is connected to an audio processing circuit on a circuit board through an audio signal line 24,
The base 25b of the rod antenna 25 built in the microphone arm 21 and having a predetermined length of conductor formed in a straight line,
Through the feed spring 26, it is connected to the antenna matching circuit on the circuit board as described above.

When the portable telephone 10 is carried, the microphone arm 21 is connected to the housing 11 as shown by a solid line in FIG.
Is stored between the right side wall 11r and the protection plate 15. Further, when talking on the mobile phone 10, the microphone arm 21 is rotated counterclockwise from the above-mentioned stowed state, as shown by a chain line in FIG. 11, and the microphone 23 and the housing 11 intersect at an appropriate obtuse angle. The microphone 23 and the speaker (opening for) 12 are held at a required distance, and deterioration of radiation characteristics such as a decrease in antenna gain due to the influence of the human head is avoided. You.

The above-described microphone arm 2
1 is pulled out, the microphone 23 is
1 is located below the bottom surface 11b of FIG.

In the above-described portable telephone 10,
By arranging the rod antenna 25 in the microphone arm 21, the antenna storage space in the housing 11 becomes unnecessary, which is effective for downsizing the portable wireless device 10. Further, by forming the rod antenna 25 using a superelastic material such as a Ni-Ti alloy, it is effective for reinforcing the microphone arm 21.

[0012]

By the way, a portable telephone can perform data communication by connecting a portable information terminal or the like. At this time, it is necessary to keep the antenna perpendicular to the ground and to cope with vertical polarization.

However, in the conventional small-sized mobile phone 10 as described above, in which the antenna 25 and the microphone 23 can be pulled out in one behavior during a call, when the housing 11 is placed horizontally on a desk, the rod antenna 25 There is a problem that it is difficult to keep the vertical to the ground.

In view of the foregoing, an object of the present invention is to provide a microphone arm which can be housed in an aligned manner with a housing and also has a built-in antenna so that the microphone arm can be pulled out at an arbitrary angle with respect to the housing. An object of the present invention is to provide a portable wireless device and an antenna device that can obtain good antenna characteristics with respect to vertical polarization even when the body is placed horizontally.

[0015]

According to a first aspect of the present invention, there is provided a portable radio apparatus according to the present invention, wherein one end of a cylindrical body having a built-in antenna and a microphone is provided at one end of a housing of a radio body. Are rotatably coupled to each other so that the first state is at a first position where the cylindrical body is aligned with the housing, and the second state is at a second position where the cylindrical body intersects the housing at a predetermined angle. In the portable wireless device used in each of the two states, a support mechanism capable of supporting the cylindrical body is provided at an intermediate position between the first position and the second position.

An antenna device according to a second aspect of the present invention includes an antenna conductor built in with a microphone in a tubular body rotatably coupled to one end of a housing of a wireless device main body. The first in the first position aligned with the housing
And the antenna device used in the second state in which the tubular body intersects the housing at a predetermined angle at the second position, the intermediate position between the first position and the second position. And a support mechanism that can support the cylindrical body so that the antenna conductor is positioned at the center.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a portable radio apparatus according to the present invention will be described with reference to FIGS.

[Structure of Embodiment] FIG. 1 shows the basic structure of an embodiment of the present invention, and FIGS. 2 and 3 show the structure of a main part thereof, and FIGS. Shown in
In FIGS. 1 and 4, parts corresponding to those in FIG. 11 are denoted by the same reference numerals, and a description thereof is partially omitted.

In FIG. 1, a small portable telephone 10A is shown.
An opening 12 for a handset (speaker) is formed in the front of a housing 11 of the telephone body, and operation keys 13 such as dial keys are provided. Further, a liquid crystal display element 14 is provided between the opening 12 and the operation keys 13. Right wall 11r of housing 11 made of an appropriate synthetic resin material
Further on the right side, a protective plate 15 having an "L" -shaped cross section is provided integrally with the housing 11, and an appropriate synthetic resin material is provided between the protective plate 15 and the right side wall 11r of the housing. , And a small-diameter rotating shaft 22a of a rotating end portion 22 of the microphone arm 21 is rotatably engaged with a lower end portion of the right side wall 11r of the housing.

In this embodiment, a slot 16 for connecting a portable information terminal or the like is provided on the bottom surface 11b of the housing 11.
And inside the microphone arm 21,
A microphone 23 and a rod antenna 25 in which a conductor of a predetermined length is formed in a straight line are incorporated.

Further, when a portable information terminal or the like is connected to the slot 16 on the bottom surface 11b of the housing and data communication is performed, as shown by a two-dot chain line in FIG. A mechanism for supporting the microphone arm 21 so as to be perpendicular to the front of the eleventh axis 11 is provided inside the concentric coaxial 22a.

As shown in FIG. 2, the support mechanism 30 includes a metal shaft 31, a compression spring 32 having one end coupled to a flange 31a thereof, and a disk-shaped contact with the other end of the compression spring 32. , A cylindrical cover member 34 for accommodating the compression spring 32 and the cam member 33, and a ring member 35 for fixing the shaft 31 outside the bottom surface 34b of the cover member 34.

On one end surface 33a of the cam member 33, two radial engagement grooves 33g and 33h corresponding to the storage position and the extraction position of the microphone arm 21 are formed. Arm 21
A third engaging groove 33v is formed in the radial direction for supporting the vertical direction with respect to the front of the housing 11. A locking piece 34 is provided inside the bottom surface 34b of the cover member 34.
s is formed.

Then, as shown in FIG.
3 first engagement groove 33g and locking piece 3 of cover member 34
4s, the microphone arm 21
Is a call position 21 as shown by a dashed line in FIG.
At P

Further, as shown in FIG.
The third engagement groove 33v and the locking piece 34 of the cover member 34
s is engaged, the microphone arm 21
As shown by a two-dot chain line in FIG. 1, a data communication position 21D perpendicular to the front of the housing 11 is taken.

This data communication position 21D and FIG.
3C, one end face 33a of the cam member 33 and the locking piece 34s of the cover member 34 are in contact with each other in the middle of the stored state of the microphone arm 21 as indicated by a solid line. Further, even in the middle between the data communication position 21D and the communication position 21P, the end surface 3
3a and the locking piece 34s of the cover member 34 are in contact with each other.

In the housed state of the microphone arm 21, although not shown, the locking piece 34s of the cover member 34 is engaged with the second engagement groove 33h of the cam member 33.

When the pressing force of the compression spring 32 is set appropriately high, when the end face 33a of the cam member 33 and the locking piece 34s of the cover member 34 are in contact with each other, the cam member 33
The frictional force between the end surface 33a of the cover member 34 and the locking piece 34s of the cover member 34 is sufficiently large for the stable support of the microphone arm 21.

Therefore, in this case, the microphone arm 2
1 can take any position and can hold the microphone arm 21 at the data communication position 21D without forming the third engagement groove 33v in the cam member 33.

In this embodiment, as shown in FIG.
A power supply spring 26 disposed in the rotation shaft 22 a of the microphone arm 21 is in contact with the base 25 b of the rod antenna 25. Further, an audio signal line 24 connected to the microphone 23 passes through the inside of the rotating shaft 22a and is led out into the housing 11.

An audio processing circuit 41, a data processing circuit 42, an RF transmitting / receiving circuit 43, an antenna matching circuit 44, and the like are mounted on a circuit board 17 housed in the housing 11. The circuit 44 is provided in the shield case 18.

The voice processing circuit 41 includes a microphone 23
And the data processing circuit 42 is connected to the terminal 16t of the slot 16. The power feeding spring 26 is connected to the RF transmitting and receiving circuit 43 through an antenna matching circuit 44.

The power supply spring 26 and the audio signal line 24 in the rotation shaft 22a are connected to the rotation shaft 22a and the support mechanism 3 described above.
A known arrangement technique is applied, such as being inserted into a gap between the support mechanism 30 and a through hole provided in the shaft 31 of the support mechanism 30. In FIG. 4, the protection plate 15 shown in FIG. 1 is omitted.

[Operation of Embodiment] Next, the operation of the embodiment of the present invention will be described. During a call of the mobile phone 10A, the microphone arm 21 is rotated counterclockwise from the stowed state shown by the solid line in FIG. 1, and the microphone arm 21 and the housing 11 are rotated as shown by the one-dot chain line in FIG. Crossed at an appropriate obtuse angle, call position 21P
The microphone 23 and the speaker (opening for) 12 are kept at a required distance.

In this state, the rod antenna 25 is located below the microphone 23 and is separated from the mouth of the user, so that the influence of the human head can be avoided. It operates normally as a monopole antenna with the ground conductor of the circuit board 17 and the shield case 18 as grounds.

The bottom surface 11b of the housing of the mobile phone 10A
At the time of data communication in which a portable information terminal or the like is connected to the slot 16, the housing 11 is placed horizontally on a desk (not shown) and supported by the support mechanism 30 as described above. The microphone arm 21 takes a data communication position 21D that is perpendicular to the front of the housing 11, as indicated by the two-dot chain line in FIG.

In this state, the rod antenna 25 built in the microphone arm 21 is perpendicular to the ground, and can respond to vertical polarization.
Good antenna directivity can be obtained as a monopole antenna having the ground conductor and the shield case 18 as a ground.

As described above, in this embodiment, the microphone arm 21 is reliably supported at a predetermined position by the support mechanism 30 including the compression spring 32 and the cam member 33 having the engagement grooves 33g and 33v. Therefore, good antenna characteristics can be obtained during a call and data communication.

When the mobile phone 10A is in a standby state, the microphone arm 21 is connected to the right side wall 11r of the housing 11 and the protection plate 15 as shown by a solid line in FIG.
And is stored in a state sandwiched between them.

In this state, as shown in FIG. 4, since the ground conductor (not shown) of the circuit board 17 and the shield case 18 are close to each other over the entire length of the rod antenna 25, the input impedance of the rod antenna 25 is Greatly increases, and the matching loss with the power supply system represented by the power supply spring 26 increases.

[Structure of Second Embodiment] Next, a third embodiment of the present invention will be described with reference to FIGS. FIG. 5 shows a basic configuration of the second embodiment of the present invention, and FIG. 6 shows a configuration of a main part thereof. In FIGS. 5 and 6, parts corresponding to FIGS. 1 and 4 are given the same reference numerals, and a part of the description will be omitted.

In FIG. 5, a small portable telephone 10H is shown.
An opening 12 for a handset (speaker) is formed in the front of a housing 11 of the telephone body, and operation keys 13 such as dial keys are provided. Further, a liquid crystal display element 14 is provided between the opening 12 and the operation keys 13.

On the right side of the right side wall 11r of the housing 11 made of a suitable synthetic resin material, a protection plate 15 having an L-shaped cross section is provided integrally with the housing 11. Also, the housing 11
A small-diameter rotary shaft 22a of a rotary end 22 of a microphone arm 21H made of an appropriate synthetic resin material is rotatably engaged with a lower end of the right side wall 11r within a predetermined angle range.

In this embodiment, the right side wall 1 of the housing 11 is
1r and the protection plate 15 between the microphone arm 21H
Is stored, and its free end 21hf is
The length of the microphone arm 21H is set so as to protrude upward (to the right in the figure) from the upper surface of the antenna, and the rod antenna as shown in FIG. 25 instead of the specified winding diameter, shaft length,
Helical antenna 51 in which a conductor is formed in a spiral shape by the number of turns
Is built-in.

The microphone 23 is arranged closer to the rotating end 22 than the helical antenna 51, and, as shown by a dashed line in FIG. The predetermined distance as described above is maintained between the opening and the opening 12).

A slot 16 for connecting a portable information terminal or the like is provided on the bottom surface 11b of the housing 11, and a portable information terminal or the like is connected to the slot 16 to perform data communication. In the case shown in FIG.
A support mechanism 30 for supporting the microphone arm 21H such that the microphone arm 21H is perpendicular to the front surface of the housing 11 as shown by a chain line, as shown in FIGS. 22a is provided inside.

As shown in FIG. 6, the helical antenna 51
Is electrically and mechanically coupled at its base to a support fitting 52 to which a coaxial feed line 53 is connected. The coaxial power supply line 53 and the audio signal line 24 connected to the microphone 23 pass through the inside of the rotation shaft 22a of the microphone arm 21H and are led out into the housing 11.

The circuit board 17 housed in the housing 11 has
An audio processing circuit 41, a data processing circuit 42, an RF transmitting / receiving circuit 43, an antenna matching circuit 44, and the like are mounted. The RF transmitting / receiving circuit 43 and the antenna matching circuit 44 are disposed in the shield case 18.

The input / output impedance (characteristic impedance) of the RF transmitting / receiving circuit 43 is usually 50Ω.
Is set to

The terminal 16t of the slot 16 is connected to the data processing circuit 42, the audio signal line 24 from the microphone 23 is connected to the audio processing circuit 41, and the coaxial feed line 53 from the helical antenna 51 is connected to the antenna matching circuit. Through 44, it is connected to the RF transmitting / receiving circuit 43.

The coaxial power supply line 53 and the audio signal line 24 in the rotation shaft 22a are inserted into the gap between the rotation shaft 22a and the above-described support mechanism 30, or are inserted into the shaft 31 of the support mechanism 30. A known arrangement technique such as insertion into the provided through hole is applied. Further, as shown in FIG. 6, a length of 1 is provided outside the coaxial feeder 53 and coaxially therewith.
One end of the 外 wavelength tubular outer conductor 53s and the coaxial feeder 5
The outer conductor 3 may be connected to the rotating end 22 side, and the other end of the outer conductor 53s may be electrically opened to form a so-called super top. in this case,
The coaxial feed line 53 is a semi-rigid cable. In FIG. 6, the protection plate 15 is omitted.

[Operation of Second Embodiment] Next, the operation of the second embodiment of the present invention will be described. When carrying the mobile phone 10H in a standby state, the microphone arm 21H is connected to the housing 1 as shown by a solid line in FIG.
1 is stored between the right side wall 11r and the protection plate 15.

In this state, as shown in FIG. 6, since the ground conductor (not shown) of the circuit board 17 and the shield case 18 are not close to each other over the entire length of the helical antenna 51, the input impedance increases. The helical antenna 51 normally operates as a monopole antenna having the ground conductor of the circuit board 17 and the shield case 18 as grounds.
The problem of the embodiment is also solved.

At the time of talking on the mobile phone 10H, the microphone arm 21H is rotated counterclockwise from the above-mentioned stored state, and as shown by a dashed line in FIG.
The microphone arm 21H and the housing 11 are pulled out to a talk position 21HP where the microphone arm 21H intersects at an appropriate obtuse angle, and the microphone 23 and the speaker (opening for) 12 are maintained at a required distance.

In this state, the helical antenna 51
Since it is located below the microphone 23 and separated from the mouth of the user, the influence of the human head can be avoided, and the helical antenna 51 connects the ground conductor of the circuit board 17 and the shield case 18 to the ground. Normally operates as a monopole antenna.

Then, the housing bottom surface 11 of the portable telephone 10H
A portable information terminal or the like is connected to the slot 16 of b.
At the time of data communication, the housing 11 is placed horizontally on a desk (not shown) and supported by the support mechanism 30 shown in FIGS.
As shown by a two-dot chain line in FIG. 5, a data communication position 21D perpendicular to the front of the housing 11 is taken.

In this state, the microphone arm 21H
The helical antenna 51 built in the antenna is perpendicular to the ground and can respond to vertical polarization, and is a good antenna as a monopole antenna having the ground conductor of the circuit board 17 and the shield case 18 as ground. Directivity is obtained.

As described above, in this embodiment, the helical antenna 51 built in the free end 21hf of the housing 11 with the microphone arm 21H housed therein is used.
So as to protrude above the upper surface 11t of the
Since the microphone arm 21 is reliably supported at a predetermined position by the support mechanism 30 including the compression spring 32 and the cam member 33 having the engagement grooves 33g and 33v, a circuit built in the housing 11 is provided. The influence on the input impedance of the helical antenna 51 due to the ground conductor of the substrate 17 and the shield case 18 is suppressed, so that a good antenna can be obtained both when the microphone arm 21H is stored and when the communication position 21HP and the data communication position 21HD. Properties can be obtained.

When a supertop is formed,
Even when the helical antenna 51 is a half-wavelength (λ / 2) antenna, the current flowing through the ground conductor of the circuit board 17 and the shield case 18 is suppressed, and the user picks up the mobile phone 10H. The antenna characteristics are stabilized even in a call state.

[Third Embodiment] Next, a third embodiment of the present invention will be described with reference to FIGS. FIG. 7 shows the configuration of the third embodiment of the present invention.
And FIG. In FIGS. 7 and 8, portions corresponding to those in FIG. 6 described above are denoted by the same reference numerals, and a description thereof is partially omitted. The basic configuration of this embodiment is the same as that of FIG.

7 and 8, a small portable telephone 10J has a rotating end 22H of a microphone arm 21H made of a suitable synthetic resin material at the lower right end of a housing 11 made of a suitable synthetic resin material. Are rotatably engaged within a predetermined angle range.

When the housing 11 and the microphone arm 21H are aligned as shown in FIG. 7, the microphone arm 21H is moved so that the free end of the microphone arm 21H protrudes above the upper end of the housing 11. The length is set, and a helical antenna 51 having a conductor formed in a spiral shape is built in the free end.

The microphone 23 is arranged closer to the rotating end 22 than the helical antenna 51, and is placed between the microphone 23 and the speaker with the microphone arm 21H extended as shown in FIG. A predetermined distance is maintained.

In this embodiment, in addition to the above-mentioned helical antenna 51, a straight line having a length of, for example, λ / 4 or λ / 2 extends from the middle portion of the microphone arm 21H to the rotating end portion 22. A rod antenna 25 made of a conductor is built in, and a power supply spring 26 disposed in the rotation shaft 22a is in contact with a base 25b thereof.

The base of the helical antenna 51 is coupled to a support fitting 52.
On one side, penetrate the side wall of the microphone arm 21H,
A connection pin 52c (see FIG. 8) is provided, and a power supply spring 54 is provided at the upper end of the housing 11 so as to be able to contact the connection pin 52c.

The audio signal line 24 connected to the microphone 23 passes through the inside of the rotating shaft 22a of the microphone arm 21H, is led out into the housing 11, and is connected to the audio processing circuit 41 on the circuit board 17. .

The data processing circuit 42,
An RF transmitting / receiving circuit 43, first and second antenna matching circuits 44 and 45, a changeover switch 46, and the like are also mounted.
5 and the changeover switch 46 are disposed in the shield case 18.

The terminal 16t of the slot 16 is connected to the data processing circuit 42, the RF transmitting / receiving circuit 43 is connected to the movable contact of the changeover switch 46, and the first antenna matching circuit 44 is connected to the h-side fixed contact of the switch 46 and the power supply spring. 54, and the second antenna matching circuit 45 is connected between the r-side fixed contact of the switch 46 and the power supply spring 26.

In this embodiment, a permanent magnet 28 is built in the microphone arm 21H, and the magnetic sensor 4 is mounted in the housing 11 so as to face the magnet 28.
7, the connection of the changeover switch 46 is controlled by the output of the magnetic sensor 47 according to the stored state and the pulled-out state of the microphone arm 21H.

A supporting mechanism 30 as shown in FIGS. 2 and 3 is provided on the rotating shaft 22a of the microphone arm 21H. At the positions indicated by the two-dot chain lines, they are stably supported.

The power supply spring 26 in the rotating shaft 22a and the audio signal line 24 are inserted into the gap between the rotating shaft 22a and the support mechanism 30, or the shaft 3 of the support mechanism 30
A well-known arrangement technique, such as insertion into the through hole provided in 1, is applied. The protection plate 15 shown in FIG.
7 and 8 are also omitted.

[Operation of Third Embodiment] Next, the operation of the third embodiment of the present invention will be described.

When the portable telephone 10J is in a standby state, as shown in FIG.
H is stored in a state aligned with the right side wall of the housing 11.

In this state, the microphone arm 21H
The connection pin 52c (see FIG. 8) of the support fitting 52 of the helical antenna 51 built in the power supply spring 5 on the housing 11 side
4 and the permanent magnet 28 in the microphone arm 21H and the magnetic sensor 47 in the housing 11 face each other.
Are connected to the h-side fixed contact.

Thus, the rod antenna 25 connected to the r-side fixed contact of the switch 46 is connected to the RF transmitting / receiving circuit 4
3 and no longer function as an antenna. On the other hand, the helical antenna 51 includes a support bracket 52, a power supply spring 54, an antenna matching circuit 44, and a changeover switch 46.
Is connected to the RF transmitting / receiving circuit 43.

The helical antenna 51 has a ground conductor (not shown) on the circuit board 17 over its entire length.
Since the shield case 18 and the shield case 18 are not close to each other, the input impedance does not increase, and the monopole antenna having the ground conductor of the circuit board 17 and the shield case 18 as grounds can operate normally in a more stable matching state. Further, during a call of the mobile phone 10J, the microphone arm 21H is rotated counterclockwise from the above-mentioned stowed state, and is pulled out to the call position 21HP as shown by the one-dot chain line in FIG. Microphone 2
3 and the speaker are maintained at a required distance.

In this state, as shown in FIG. 8, the helical antenna 51 built in the microphone arm 21H
The connection pin 52c of the support bracket 52 is separated from the power supply spring 54 on the housing 11 side, and the microphone arm 2
The permanent magnet 28 in 1H and the magnetic sensor 47 in the housing 11
The movable contact of the changeover switch 46 is switched to the r-side fixed contact by the output of the magnetic sensor 47.

As a result, the helical antenna 51 connected to the h-side fixed contact of the switch 46 is disconnected from the RF transmitting / receiving circuit 43 and does not function as an antenna.
On the other hand, the rod antenna 25 receives the RF signal through the feed spring 26, the antenna matching circuit 45, and the changeover switch 46.
Connected to the transmitting / receiving circuit 43.

Since the ground conductor (not shown) of the circuit board 17 and the shield case 18 are not close to each other over the entire length of the rod antenna 25, the input impedance does not increase, and the ground conductor of the circuit board 17 and As a monopole antenna having the shield case 18 as a ground, it operates normally in a more stable matching state.

Further, when a portable information terminal or the like is connected to the slot 16 of the portable telephone 10J.
The housing 11 is placed horizontally on a desk (not shown) and supported by the support mechanism 30 as described above, and the microphone arm 21H is moved as shown by a two-dot chain line in FIG. A data communication position 21HD that is perpendicular to the front of the housing 11 is taken.

Also in this state, as shown in FIG. 8, the permanent magnet 28 in the microphone arm 21H and the magnetic sensor 47 in the housing 11 are separated from each other, and the output of the magnetic sensor 47 causes the changeover switch 46 to move. The contact is switched to the r-side fixed contact.

Then, as in the case of the above-described call, the helical antenna 51 stops functioning as an antenna, and at the same time, the rod antenna 25 is connected to the circuit board 1.
As a monopole antenna having the ground conductor 7 and the shield case 18 as a ground, it operates normally in a more stable matching state.

In the above embodiment, the microphone arm 21 is formed by the support mechanism 30 including the compression spring 32 and the cam member 33 having the engagement grooves 33g and 33v as shown in FIGS. A helical antenna 5 built in at a free end thereof so as to protrude above the upper end of the housing 11 so as to be surely supported at a predetermined position and when the microphone arm 21H is stored.
When the microphone arm 21H is pulled out to one of the talking position and the data communication position as described above, the switch 46 is operated so that the rod antenna 25 built in the intermediate portion thereof functions. I changed it.

Thus, when the microphone arm 21H is stored, or when the microphone arm 21H is pulled out to the talking position or the data communication position, the housing 11 is closed.
The ground conductor and the shield case 18 of the circuit board 17 built in
, The influence on the input impedance of the helical antenna 51 or the rod antenna 25 is suppressed,
Good antenna characteristics can be obtained.

[Fourth Embodiment] Next, a fourth embodiment of the present invention will be described with reference to FIGS. FIGS. 9 and 10 show the configuration of the fourth embodiment of the present invention. 9 and 10, parts corresponding to those in FIGS. 6 to 8 are denoted by the same reference numerals, and a part of the description will be omitted. The basic configuration of this embodiment is the same as that of FIG.

In FIGS. 9 and 10, a small portable telephone 10K has a rotating end 22H of a microphone arm 21H made of a suitable synthetic resin material on the right lower end of a housing 11 made of a suitable synthetic resin material. Are rotatably engaged within a predetermined angle range.

When the housing 11 and the microphone arm 21H are aligned as shown in FIG. 9, the microphone arm 21H is moved so that the free end of the microphone arm 21H protrudes upward from the upper end of the housing 11. A helical antenna 51 whose length is set and whose conductor is formed in a spiral shape in its free end is built in with its base coupled to a support fitting 52.

The microphone 23 is arranged closer to the rotation end 22 than the helical antenna 51, and
In the state where the microphone arm 21H is pulled out as shown in FIG. 7, the above-described predetermined distance is maintained between the microphone arm 21H and the speaker.

In this embodiment, inside the microphone arm 21H, one end of the rod antenna 25Q made of a linear conductor and having a length of λ / 4 is directly connected to the support fitting 52 of the helical antenna 51. Then, a power supply spring 26 disposed in the rotation shaft 22a is in contact with the base 25b of the rod antenna 25Q.

Further, the support fitting 5 of the helical antenna 51
A connection pin 52c (see FIG. 10) is provided on the side of the second housing 11 through the side wall of the microphone arm 21H, and an upper end of the housing 11 is provided so as to be able to contact the connection pin 52c. A power supply spring 54 is provided in the portion.

The audio signal line 24 connected to the microphone 23 passes through the inside of the rotating shaft 22a of the microphone arm 21H, is led out into the housing 11, and is connected to the audio processing circuit 41 on the circuit board 17. .

The data processing circuit 42,
The RF transmitting / receiving circuit 43, the first and second antenna matching circuits 44 and 45, the two-circuit changeover switch 48, and the like are also mounted.
4, 45 and the changeover switch 48 are the shield case 1
8.

The terminal 16t of the slot 16 is connected to the data processing circuit 42, the first antenna matching circuit 44 is connected between the a-contact of the two-circuit changeover switch 48 and the feeding spring 54, and the b-contact of the switch 48 RF transmitting / receiving circuit 43
Is connected, and a second antenna matching circuit 45 is connected between the c-contact of the switch 48 and the feeding spring 26. The d contact of the switch 48 is grounded.

A magnetic sensor 47 for controlling the connection of the two-circuit changeover switch 48 is provided in the housing 11, and a permanent magnet 28 is mounted on the microphone arm 21H so as to face the magnetic sensor 47. Built-in.

A supporting mechanism 30 as shown in FIGS. 2 and 3 is provided on the rotating shaft 22a of the microphone arm 21H. At the positions indicated by the two-dot chain lines, they are stably supported.

The power supply spring 26 and the audio signal line 24 in the rotary shaft 22a are inserted into the gap between the rotary shaft 22a and the support mechanism 30, or the shaft 3 of the support mechanism 30
A well-known arrangement technique, such as insertion into the through hole provided in 1, is applied. The protection plate 15 shown in FIG.
Also omitted in FIGS. 9 and 10.

[Operation of Fourth Embodiment] Next, the operation of the fourth embodiment of the present invention will be described.

When the portable telephone 10K is in a standby state, as shown in FIG.
H is stored in a state aligned with the right side wall of the housing 11.

In this stored state, the microphone arm 2
Supporting bracket 52 of helical antenna 51 built in 1H
The connection pin 52c (see FIG. 10) of the microphone arm 21H contacts the power supply spring 54 on the housing 11 side.
The permanent magnet 28 in the inside and the magnetic sensor 47 in the housing 11 face each other, and the outputs of the magnetic sensor 47 connect the contacts a, b and c, d of the two-circuit changeover switch 48, respectively.

Thus, the λ / 4 rod antenna 25Q
The base 25b of the power supply spring 26, the antenna matching circuit 45
And grounded through the c and d contacts of the switch 48,
When viewed from the support bracket 52 side of the helical antenna 51, λ /
The impedance of the four-rod antenna 25Q increases, and the high-frequency current fed through the feeding spring 54 does not flow, and the λ / 4 rod antenna 25Q does not function as an antenna.

On the other hand, the helical antenna 51 is connected to the RF transmitting / receiving circuit 43 through the support bracket 52, the feeding spring 54, the antenna matching circuit 44, and the a and b contacts of the changeover switch 48.

The helical antenna 51 has a ground conductor (not shown) on the circuit board 17 over its entire length.
The input impedance does not increase because the shield case 18 and the shield case 18 are not close to each other.
A high-frequency current is supplied through the antenna, and the device operates normally in a more stable matching state as a monopole antenna having the ground conductor of the circuit board 17 and the shield case 18 as grounds. Further, during a call of the mobile phone 10K, the microphone arm 21H is rotated counterclockwise from the above-mentioned stowed state, pulled out to the call position 21HP as shown by the dashed line in FIG. The microphone 23 and the speaker are maintained at a required distance.

In this state, as shown in FIG. 10, the helical antenna 5 built in the microphone arm 21H
The connection pin 52c of the first support bracket 52 and the power supply spring 54 on the housing 11 side are separated from each other, and the permanent magnet 28 in the microphone arm 21H and the magnetic sensor 4 in the housing 11 are separated.
The switch 48 is also switched by the output of the magnetic sensor 47 so that the a and d contacts and the b and c contacts are respectively connected.

As a result, the feeding spring 54 is grounded through the a and d contacts of the antenna matching circuit 44 and the changeover switch 48, and the RF transmitting and receiving circuit 43 is connected to the b and c contacts of the changeover switch 48 and the antenna matching circuit. 45
Λ / 4 rod antenna 2
5Q and helical antenna 51 are connected.

The helical antenna 51 and the λ / 4 rod antenna 25Q form one antenna system.
Since the ground conductor (not shown) of the circuit board 17 and the shield case 18 are not close to each other over substantially the entire length, the input impedance does not increase, and the ground conductor of the circuit board 17 and the shield case 18 are connected to the ground. As a so-called top-loading type composite antenna, it operates normally in a more stable matching state.

Further, when a portable information terminal or the like is connected to the slot 16 of the portable telephone 10J, and during data communication,
The housing 11 is placed horizontally on a desk (not shown) and supported by the support mechanism 30 as described above, and the microphone arm 21H is moved as shown by a two-dot chain line in FIG. A data communication position 21HD that is perpendicular to the front of the housing 11 is taken.

Even in this state, as shown in FIG. 10, the permanent magnet 28 in the microphone arm 21H and the magnetic sensor 47 in the housing 11 are separated from each other, and the output of the magnetic sensor 47 causes the two-circuit changeover switch 48 A and d contacts and b and c contacts are respectively connected.

Then, as in the case of the above-described communication, the helical antenna 51 and the λ / 4 rod antenna 2 are used.
5Q forms a top-loading type composite antenna, and the ground conductor (not shown) of the circuit board 17 and the shield case 18 are not close to each other over almost the entire length, so that the input impedance does not increase. ,
With the ground conductor of the circuit board 17 and the shield case 18 as grounds, the circuit operates normally in a more stable matching state.

In the above-described embodiment, the microphone arm 21 is formed by the support mechanism 30 including the compression spring 32 and the cam member 33 having the engagement grooves 33g and 33v as shown in FIGS. A helical antenna 5 built in at a free end thereof so as to protrude above the upper end of the housing 11 so as to be surely supported at a predetermined position and when the microphone arm 21H is stored.
1 when the microphone arm 21H is pulled out to one of the talking position and the data communication position as described above.
The switch 48 is switched so that the antenna and the λ / 4 rod antenna 25Q function as one antenna system.

Thus, the housing 11 can be retracted when the microphone arm 21H is stored or when the microphone arm 21H is pulled out to the talking position or the data communication position.
The ground conductor and the shield case 18 of the circuit board 17 built in
, The influence on the input impedance is suppressed, and good antenna characteristics can be obtained.

[Other Embodiments] FIGS. 9 and 10
In the embodiment of the present invention, the length of the rod antenna is set to λ / 4. However, when the microphone arm is stored, the length of the rod antenna is set to λ / 2 by opening the d-contact of the two-circuit changeover switch 48, for example. It can also be.

Further, in each of the embodiments shown in FIGS. 7 to 10 described above, the changeover switch or the two-circuit changeover switch is switched based on the output of the magnetic sensor. However, each switch is mechanically connected to the microphone arm. You may make it interlock.

Further, in each of the embodiments shown in FIGS. 7 to 10 described above, power is supplied to the helical antenna by contact with the conductive material. However, power is supplied to the helical antenna in a non-contact manner through the electromagnetic coupling element. You may do so.

[0114]

As described above, according to the present invention, the microphone arm, which is rotatably connected to one end of the housing of the wireless device main body and has a built-in microphone and an antenna conductor, is used for communication. When pulled out to the position or the data communication position, it is securely fixed and good antenna characteristics can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a basic configuration of an embodiment of a portable wireless device according to the present invention.

FIG. 2 is a conceptual diagram showing a configuration of a main part of the embodiment of the present invention.

FIG. 3 is a conceptual diagram for explaining an operation of a main part of the embodiment of the present invention.

FIG. 4 is a conceptual diagram showing a configuration of another main part of the embodiment of the present invention.

FIG. 5 is a perspective view showing a basic configuration of a second embodiment of the present invention.

FIG. 6 is a conceptual diagram showing a configuration of a main part of a second embodiment of the present invention.

FIG. 7 is a conceptual diagram showing a configuration of a main part of a third embodiment of the present invention.

FIG. 8 is a conceptual diagram showing a configuration of a main part according to a third embodiment of the present invention.

FIG. 9 is a conceptual diagram showing a configuration of a main part of a fourth embodiment of the present invention.

FIG. 10 is a conceptual diagram showing a configuration of a main part according to a fourth embodiment of the present invention.

FIG. 11 is a perspective view showing a conceptual configuration example of a conventional mobile phone.

[Description of Signs] 10A, 10H, 10J, 10K: Mobile phone body, 11
... Housing, 12 ... Receiver (speaker), 13 ... Operation buttons, 14 ... Liquid crystal display unit, 15 ... Protective plate, 16 ... Terminal connection slot, 17 ... Circuit board, 18 ... Shield case,
21, 21H: microphone arm, 22: rotating shaft, 2
3 ... transmitter (microphone), 24 ... voice signal line, 25
... Rod antenna, 25Q ... λ / 4 rod antenna, 2
6 ... power supply spring, 28 ... permanent magnet, 30 ... microphone arm support mechanism, 32 ... compression spring, 33 ... cam, 33
g, 33h, 33v ... engagement groove, 34 ... cover, 34s ...
Locking piece, 41: voice processing circuit, 42: data processing circuit,
43: RF transmitting / receiving circuit, 44, 45: antenna matching circuit, 46: changeover switch, 47: magnetic sensor, 48:
Two-circuit changeover switch, 51 helical antenna, 52
... Support member, 53 ... Coaxial power supply line, 53s ... Coat conductor, 5
4: Power supply spring

Claims (10)

[Claims] An end of a cylindrical body containing an antenna and a microphone is rotatably connected to one end of a housing of a wireless device main body, and the first cylindrical body is aligned with the housing. And a second state in which the tubular body intersects the housing at a predetermined angle in a second state. A portable wireless device provided with a support mechanism capable of supporting the tubular body at an intermediate position between the position and the second position. 2. The apparatus according to claim 1, wherein said support mechanism includes a compression spring and a cam member, and said cam member is formed with three grooves corresponding to said first and second positions and said intermediate position. The portable wireless device according to claim 1. 3. The antenna according to claim 1, wherein the antenna is formed in a spiral shape, and is disposed outside the other end of the housing with respect to a rotation axis of the tubular body in the first state. The portable wireless device according to claim 1. 4. The antenna according to claim 1, wherein the antenna includes a first antenna formed in a spiral shape and a second antenna formed in a straight line, and the first position, the second position, and the intermediate position. The portable wireless device according to claim 1, wherein the first and second antennas are selectively supplied with power. 5. The antenna includes a first antenna formed in a spiral shape and a second antenna formed in a straight line, and one end of the second antenna is connected to a base of the first antenna. And the first position and the second position
The portable wireless device according to claim 1, wherein power is selectively supplied to the first and second antennas at the position (1) and the intermediate position. 6. A first body in which a cylindrical body rotatably coupled to one end of a housing of a wireless device main body is provided with an antenna conductor incorporated together with a microphone, and wherein the cylindrical body is aligned with the housing. And a second state in which the tubular body intersects the housing at a predetermined angle in a second state. An antenna device, comprising: a support mechanism that can support the tubular body so that the antenna conductor is positioned at an intermediate position from the second position. 7. The apparatus according to claim 1, wherein said support mechanism includes a compression spring and a cam member, and said cam member has three grooves corresponding to said first and second positions and said intermediate position. The antenna device according to claim 6. 8. The antenna device according to claim 1, wherein the antenna conductor is formed in a spiral shape, and is arranged outside the other end of the housing with respect to a rotation axis of the cylindrical body in the first state. The antenna device according to claim 6. 9. The antenna according to claim 1, wherein the antenna conductor includes a first antenna conductor formed in a spiral shape and a second antenna conductor formed in a straight line, and the first position, the second position, The antenna device according to claim 6, wherein power is selectively supplied to the first and second antenna conductors at the intermediate position. 10. The antenna antenna according to claim 1, wherein the antenna conductor includes a first antenna conductor formed in a spiral shape and a second antenna conductor formed in a straight line, and one end of the second antenna conductor is connected to the first antenna conductor. Connected to the base of the conductor, and at the first position, at the second position and at the intermediate position,
The antenna device according to claim 6, wherein power is selectively supplied to the first and second antenna conductors.