JP4444364B2 - Foldable portable radio - Google Patents

Description

  The present invention relates to an antenna built in a folding portable wireless device having a biaxial hinge mechanism.

  In general, a foldable mobile phone has a mechanism that can be opened and closed by connecting an upper housing and a lower housing with a hinge portion having one rotating shaft, and is in an open state (open state). There are two advantages, that is, the convenience that the display device to be browsed can be enlarged and the portability that the display device can be made compact when closed (closed state).

  As an antenna of a casing for a foldable portable wireless device having such a conventional single-axis hinge mechanism, for example, as disclosed in Patent Document 2, a conductor constituting a part of the upper casing Is used as an antenna element, and power is fed from a lower housing using a feed line.

  Further, as shown in FIG. 8, the conductive frame 1 constituting a part of the upper housing is aligned through the conductive hinge portion 47 and the sheet metal 48 constituted by the hinge fittings 44 and 46 and the rotating shaft 45. There is a configuration in which the ground pattern of the circuit board 20 built in the lower housing, the conductive frame 1 and the hinge portion 47 are operated as a dipole antenna by supplying power from the circuit 21 and the wireless circuit 23. According to this configuration, high antenna performance can be obtained with the upper housing and the lower housing opened.

  On the other hand, as a mechanism for connecting the upper housing and the lower housing, a biaxial hinge mechanism that can be rotated around two different rotational axes as shown in Patent Document 1 that has been mounted on a video camera or the like is used. Thus, there is an advantage that the display screen can be used in various directions.

  By mounting the camera in the vicinity of the two-axis hinge mechanism of the folding portable wireless device having such a two-axis hinge mechanism, the display screen 7 is made horizontally long as shown in FIG. There is an advantage that it can be used for shooting, and this state is generally called a movie style. Furthermore, the two rotating shafts of the two-axis hinge mechanism can be used as the usage state, and can be in the open state, the closed state, and the viewer state shown in FIG. There is something.

  As an antenna of a conventional folding mobile phone having a biaxial hinge mechanism, for example, as shown in FIG. There is a structure in which power is supplied from the radio circuit 23 in the lower case 3 constituting the lower housing by the provided balun 42 and the coaxial cable 41 passing through the inside of the biaxial hinge portion 4.

  For example, as shown in FIG. 11, an antenna element 43 is provided in the lower case 3 in the vicinity of the biaxial hinge 4, and power is supplied from the radio circuit 23 on the lower circuit board 20 to the antenna element 43 via the matching circuit 31. There is a structure. Here, it is desirable that the material of the biaxial hinge portion 4 is made of a conductive metal such as steel in consideration of the strength and durability of the mobile phone.

JP-A-11-247840

JP 2002-335180 A

  However, the conventional antenna of a folding portable wireless device having a uniaxial hinge mechanism as shown in FIG. 8 cannot cope with various usage forms corresponding to the biaxial structure. In particular, the problem is that the movie style cannot be used.

  Further, in the folding state and movie-style antenna of the folding cellular phone having the biaxial hinge mechanism having the configuration shown in FIG. 10, the antenna disposed in the upper casing from the circuit board in the lower casing. It was necessary to feed power to the element using a coaxial cable or the like, and degradation of antenna performance due to the length of the feed line was a problem. In addition, it is necessary to pass a coaxial cable through the biaxial hinge part, and the structure is complicated and the assemblability is poor.

  Further, as the antenna for the closed state and the viewer state having the configuration shown in FIG. 11, a part of the conductive biaxial hinge part 4 and a part of the antenna element 43 are parallel to the rotation axis 6, and However, since they are arranged close to each other, there is a problem that the radiation resistance is lowered and the antenna performance is deteriorated.

  The present invention has been made in view of the above circumstances, and an object thereof is to secure high antenna performance in various usage modes brought about by the biaxial hinge mechanism in the built-in antenna of the portable wireless device having the biaxial hinge mechanism. In addition, the assembly man-hour is reduced.

  In order to achieve the above object, a foldable portable radio apparatus according to the present invention is a foldable portable radio apparatus in which an upper casing and a lower casing are connected by a two-axis hinge mechanism that is rotatable in two different directions. A first antenna element provided in the upper casing, a first hinge element that mechanically supports the upper casing and is electrically connected to the first antenna element, and the first A second hinge element that mechanically supports the hinge element so as to be rotatable about the first rotation axis and is electrically connected to the first hinge element; and the second hinge element is connected to the second rotation axis. And a third hinge element that is mechanically supported so as to be pivotable about the second hinge element and is electrically connected to the second hinge element; and a circuit board provided in the lower housing to the third hinge element. A first feeding unit for feeding power and the first antenna; Configured having electric connecting member electrically connected to both the substantially central to said first hinge element and the first antenna element of the child.

  According to the above configuration, the number of assembling steps can be reduced while ensuring high antenna performance in a state where the housing is opened and in the movie style.

  It is preferable to use a conductive frame constituting a part of the upper housing as the first antenna element.

  According to the above configuration, the number of assembling steps can be reduced while ensuring high antenna performance in a state where the housing is opened and in the movie style.

  In addition, a second antenna element provided in the lower housing, a second power feeding unit that feeds power from the circuit board to the second antenna element, and a switching for selecting one of the first power feeding unit and the second power feeding unit. A portion can be further provided.

  According to the above configuration, assembly man-hours are ensured with high antenna performance in all of the various usage modes brought about by the two-axis hinge mechanism in the opened state, the closed state, the movie style and the viewer state. Can be reduced.

  A fourth hinge element that mechanically supports the second hinge element so as to be rotatable about the second rotation axis and is electrically connected to the second hinge element; a fourth hinge element; and a circuit board. A grounding portion that electrically connects the upper ground pattern can be further provided.

  According to the above configuration, assembly man-hours are ensured with high antenna performance in all of the various usage modes brought about by the two-axis hinge mechanism in the opened state, the closed state, the movie style and the viewer state. Can be reduced.

  A fourth hinge element that mechanically supports the second hinge element so as to be rotatable about the second rotation axis and is electrically connected to the second hinge element; a fourth hinge element; and a circuit board. A reactance element may be inserted between the ground pattern.

  According to the above configuration, assembly man-hours are ensured with high antenna performance in all of the various usage modes brought about by the two-axis hinge mechanism in the opened state, the closed state, the movie style and the viewer state. Can be reduced.

  Further, it is preferable that at least a part of the second antenna element is disposed in parallel with the second rotation axis.

  According to the above configuration, assembly man-hours are ensured with high antenna performance in all of the various usage modes brought about by the two-axis hinge mechanism in the opened state, the closed state, the movie style and the viewer state. Can be reduced.

  Moreover, you may comprise so that a 4th hinge element and a 3rd hinge element may be arrange | positioned at predetermined intervals.

  According to the above configuration, assembly man-hours are ensured with high antenna performance in all of the various usage modes brought about by the two-axis hinge mechanism in the opened state, the closed state, the movie style and the viewer state. Can be reduced.

  In addition, an open / close detection control unit that controls the switching unit according to the result of detecting the open / closed state around the second rotation axis of the upper housing and the lower housing is further provided. One power supply unit may be selected, and the second power supply unit may be selected in the closed state.

  According to the above configuration, assembly man-hours are ensured with high antenna performance in all of the various usage modes brought about by the two-axis hinge mechanism in the opened state, the closed state, the movie style and the viewer state. Can be reduced.

  In addition, an operation state detection control unit that controls the switching unit according to the result of detecting the operation state of the portable wireless device is further provided, and the operation state detection control unit selects the first power supply unit when the casing is in a call or communication state. In the standby state, the second power feeding unit may be selected.

  According to the above configuration, assembly man-hours are ensured with high antenna performance in all of the various usage modes brought about by the two-axis hinge mechanism in the opened state, the closed state, the movie style and the viewer state. Can be reduced.

  As described above, according to the present invention, it is possible to secure a high antenna performance in various usage modes brought about by the biaxial hinge mechanism, and to provide a feeding line for feeding power to a dedicated antenna element arranged in the upper housing. Since it is not necessary, the configuration is simple and the number of assembly steps can be reduced.

FIG. 1 is a basic configuration diagram of a folding portable wireless device according to a first embodiment, in which FIG. 1A is a rear view and FIG. 1B is a side view. It is an expansion perspective view of the biaxial hinge part of the folding portable radio | wireless machine which concerns on 1st Embodiment. FIG. 3A is a cross-sectional view taken along a line PP ′ shown in FIG. 1, FIG. 3A shows a path through which an antenna current flows when a sheet metal is added, and FIG. 3B shows no sheet metal. The path through which the antenna current flows is shown. It is a movie style rear view of the foldable portable wireless device according to the first embodiment. It is a movie style rear view of a foldable portable radio when the power feeding position is far from the camera. FIG. 6 is a basic configuration diagram of a folding portable wireless device according to a second embodiment, in which FIG. 6A is a rear view and FIG. 6B is a side view. It is a side view of the viewer state of the foldable portable wireless device according to the second embodiment. It is a rear view of the folding portable radio | wireless machine which has the conventional 1 axis | shaft hinge mechanism. It is a perspective view of the movie style use state of the folding portable radio | wireless machine which has the conventional biaxial hinge mechanism. It is a rear view of a foldable portable wireless device having a conventional biaxial hinge mechanism. FIG. 11 is a basic configuration diagram of a folding portable wireless device having a conventional biaxial hinge mechanism, in which FIG. 11A is a rear view and FIG. 11B is a side view.

  Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

(First embodiment)
1 to 5 show a foldable portable wireless device according to a first embodiment of the present invention, its main part, usage state, and the like.

  1 to 5, the same components are denoted by the same reference numerals. As shown in these drawings, in the folding portable wireless device of this embodiment, an upper case 2 constituting an upper housing and a lower case 3 constituting a lower housing are connected by a biaxial hinge portion 4. It has a structure and is opened by rotating around a rotating shaft 5 constituting the first rotating shaft and two rotating shafts 6 constituting the second rotating shaft, which are the two axes of the biaxial hinge portion 4. , A closed state, a movie style, and a viewer state. Here, the rotation angle of the rotation shaft 5 is defined as α shown in FIG. 4 and the rotation angle of the rotation shaft 6 is defined as β as shown in FIG. That is, in the state of FIG. 1, α = 0 ° and β = 165 °, which are in an open state. Therefore, the closed state can be realized by α = 0 ° and β = 0 °, the movie style can be realized by α = 90 ° and β = 90 °, and the viewer state can be realized by α = 180 ° and β = 0 °.

  A metal frame 1 constituting the first antenna element is mounted on the surface of the upper case 2 on which the display screen 7 is arranged. Generally, the metal frame 1 is made of a metal having high conductivity, light weight and high strength, such as a magnesium alloy. Thereby, the strength of the upper casing is ensured and the metal frame 1 also operates as an antenna element. Generally, the long side length L1 of the metal frame 1 is about 90 mm, and the short side length L4 is about 50 mm. In general, a cosmetic coating is applied to the exterior surface of the metal frame 1, but a description thereof is omitted here.

  The metal frame 1 and the hinge fitting 10 constituting the first hinge element are attached to the screw hole 9 of the upper case 2 by the attachment screw 8, whereby the metal frame 1 and the hinge fitting 10 are electrically connected. In addition, the upper case 2 and the hinge fitting 10 are mechanically fixed.

  There are two mounting screws 8, and it is desirable to arrange them as far apart as possible in order to reduce the force applied when the user of the portable wireless device rotates the upper case 2 around the rotating shaft 5. The interval W between the two mounting screws 8 is 45 mm.

  The hinge metal fitting 10 is fitted with a conductive sheet metal 24 constituting an electrical connection member, and the metal frame 1 is brought into spring contact with a spring structure formed by bending one end of the sheet metal 24. The metal frame 1 and the hinge fitting 10 are electrically connected at the center of the two mounting screws 8.

  The hinge metal fitting 10 and the hinge metal fitting 11 constituting the second hinge element are coupled by a mounting screw 12 so as to be rotatable around the rotation shaft 5. Further, the hinge fitting 13 corresponding to the third hinge element and the hinge fitting 14 constituting the fourth hinge element can be rotated around the rotation shaft 6 by the mounting screw 15 at both ends of the hinge fitting 11. Are linked together.

  The hinge metal fitting 10, the hinge metal fitting 11, the hinge metal fitting 13, the hinge metal fitting 14, the attachment screw 12 and the attachment screw 15 are made of conductive metal, and are configured to be electrically connected at respective contact points. The hinge bracket 10, the hinge bracket 11, the hinge bracket 13, the hinge bracket 14, the mounting screw 12, and the mounting screw 15 constitute the biaxial hinge portion 4.

  At the side end of the lower case 3, a camera 22 constituting an imaging unit is disposed. As shown in FIG. 9, the camera 22 is a small camera that can capture a moving image and a still image in the movie style in which the shooting direction is the −Y direction. Also, in the movie style, if the camera 22 is covered with the hand or finger 37 of the user of the portable wireless device, it becomes impossible to take a picture. Therefore, the user of the portable wireless device does not need to be aware of it. There is little touching the camera 22.

  The hinge bracket 13 and the feed terminal 16 are electrically connected to each other by attaching the hinge bracket 13 and the feed terminal 16 constituting the first feed section to the screw hole 19 of the lower case 3 with the mounting screw 17. At the same time, the lower case 3 and the hinge fitting 13 are mechanically fixed.

  The hinge case 14 and the lower case 3 are attached to the screw hole 19 of the lower case 3 with the attachment screw 18, whereby the lower case 3 and the hinge piece 14 are mechanically fixed.

  The power supply terminal 16 is connected to the matching circuit 21 on the circuit board 20 disposed inside the lower case 3 by, for example, spring contact or soldering. The matching circuit 21 is connected to the wireless circuit 23 on the circuit board 20. The circuit board 20 is a printed circuit board on which circuit components that realize various functions of the portable wireless device are mounted, and a ground pattern serving as a ground potential of the circuit is formed on almost the entire surface.

  In the foldable portable radio device configured as described above, the metal frame 1 and the biaxial hinge portion 4 operate as an upper antenna element having a length L2 (for example, 110 mm), and the impedance of the upper antenna element is defined as a radio circuit. The matching circuit 21 functions to match the input impedance of 23 (generally 50Ω). In addition, a ground pattern on the circuit board 20 having a length L3 (for example, 90 mm) operates as a lower antenna element. That is, the metal frame 1 and the biaxial hinge part 4 and the circuit board 20 operate as a dipole antenna in an open state or a movie style. Further, it is desirable in terms of antenna performance that the gap G1 between the biaxial hinge part 4 and the ground pattern on the circuit board 20 be as far as possible (for example, 2 mm or more).

  In the foldable portable wireless device having the antenna as described above, high antenna performance can be obtained both in the opened state and in the movie style.

  As described above, the folding portable wireless device according to the present embodiment, unlike the configuration corresponding to the conventional single-axis hinge mechanism, has high antenna performance regardless of whether the housing is opened or movie style. Obtainable.

  Further, unlike the conventional configuration in which the coaxial cable is fed through the hinge portion to the antenna element arranged in the upper case, the biaxial hinge portion 4 has an antenna feeding function. Thereby, the assembly man-hour which passes a feeder to the biaxial hinge part 4 can be reduced.

  In the folding portable wireless device of this embodiment, the metal frame 1 and the hinge fitting 10 are electrically connected to each other at the center of the two mounting screws 8 by the sheet metal 24. Therefore, when there is no sheet metal 24, the path through which the antenna current 49 flows is reversed at two adjacent points as shown in the ST point of FIG. 3B, but by adding the sheet metal 24, the path of FIG. Thus, the antenna performance can be prevented from deteriorating due to the reverse phase, and higher antenna performance can be obtained. The method for reducing the deterioration of the antenna performance due to the reverse phase is not limited to this, and the same effect can be obtained if the configuration does not result in the reverse phase.

  In the foldable portable wireless device according to the present embodiment, the positions of the camera 22 and the hinge fitting 13 are not particularly limited. For example, even in the case shown in FIG. However, as shown in FIG. 4, the hinge fitting 13 fed from the feeding terminal 16 is arranged in the vicinity of the camera 22, so that the feeding terminal 16 and the hinge fitting 13 through which a strong antenna current flows in the movie style are connected to the portable wireless device. Since the distance G2 between the user's hand and the finger 37 can be increased, deterioration of the antenna performance due to the proximity of the human body can be avoided, so that even higher antenna performance can be obtained. The method of avoiding degradation of antenna performance due to the proximity of the human body is not limited to this, and it is possible to obtain the same effect in a specific use state by supplying power at a position where it is difficult to cover with the user's hand or finger. it can.

  In addition, although the attachment screw 12 is used for the connection of the hinge metal fitting 10 and the hinge metal fitting 11, if it is a structure which can ensure electrical connection with the mechanism which can be rotated centering on the rotating shaft 5, it will not restrict to this. Absent. Similarly, the mounting screw 15 is used to connect both the hinge fitting 13 and the hinge fitting 14 to the hinge fitting 11, but the structure can be secured with a mechanism that can rotate around the rotation shaft 6 and electrical connection. If so, it is not limited to this.

  In addition, although the metal frame 1 and the hinge metal fitting 10 are electrically connected in the center part of the two attachment screws 8 using the sheet metal 24, it is not restricted to this, For example, the center of the two attachment screws 8 Even if the metal frame 1 and the hinge fitting 10 are fastened using conductive mounting screws at the same portion, the same effect can be obtained.

  Note that the electrical connection used in the description of the present embodiment includes a case where the conductor metals are capacitively coupled by being close to each other and are connected at a high frequency. For example, even if the mounting screw 12 used to connect the hinge fitting 10 and the hinge fitting 11 is an insulating non-metal, the distance between the hinge fitting 10 and the hinge fitting 11 is less than necessary, and If the area to be processed is more than necessary and sufficient capacity can be obtained, the same effect can be obtained.

  Note that the gap G2 between the power supply terminal 16 and the user's hand or finger 37 is preferably a certain value or more, for example, 5 mm or more in terms of antenna performance.

(Second Embodiment)
6 and 7 show a foldable portable wireless device according to a second embodiment of the present invention.

  6 and 7, the same reference numerals as those shown in FIGS. 1 to 5 denote the same components, and a detailed description thereof will be omitted. However, in the present embodiment shown in FIGS. 6 and 7, the point that the second antenna element is disposed in the vicinity of the biaxial hinge part 4, the point that the opening / closing detection control part is provided, and the detection of the opening / closing detection control part The point which provided the power supply changeover switch which selects the antenna which operate | moves according to a result and connects to the radio | wireless circuit 23, and the point which inserted the reactance element between the hinge metal fitting 14 and the ground pattern of the lower circuit board 20 are FIG. 1 thru | or FIG. 5 is different from the folding portable wireless device of the first embodiment shown in FIG.

  As shown in FIGS. 6 and 7, a conductor plate 30 constituting the second antenna element is bonded to the lower case 3.

  The conductor plate 30 is made of a conductive material having a length of 45 mm and a thickness of 0.1 mm, for example, and is disposed so that at least a part thereof is parallel to the hinge fitting 11. Here, the conductor plate 30 and the hinge fitting 11 each have a portion parallel to the rotating shaft 6. The conductor plate 30 is connected to a matching circuit 31 on the circuit board 20 disposed inside the lower case 3 by, for example, spring contact or soldering.

  The hinge metal fitting 14 that is a component of the biaxial hinge portion 4 is connected to the ground pattern of the circuit board 20 via the connection metal fitting 35 and the circuit element 36 constituting the reactance element. The circuit element 36 is inductive or capacitive reactance, or 0Ω, and plays a role of adjusting an electrical length of a portion parallel to the rotating shaft 6 of the hinge fitting 11. In particular, when the circuit element 36 is 0Ω, the circuit element 36 corresponds to the ground portion.

  The matching circuit 31 functions to match the impedance of the conductor plate 30 to the input impedance (generally 50Ω) of the radio circuit 23.

  The matching circuit 31 or the matching circuit 21 and the radio circuit 23 are electrically connected via a high-frequency switch 32 constituting a switching unit. The high frequency switch 32 performs control so that either the matching circuit 31 or the matching circuit 21 and the radio circuit 23 are short-circuited in high frequency, and the other and the radio circuit 23 are opened in high frequency. The high-frequency switch 32 is controlled by a hall element 33 constituting an open / close detection control unit. The hall element 33 is disposed in the lower case 3.

  Here, the upper case 2 has a built-in permanent magnet 34. When the case of the portable wireless device is closed or in the viewer state, the permanent magnet 34 and the Hall element 33 are close to each other, but the case is opened. In some cases or in the movie style, the distance between the permanent magnet 34 and the hall element 33 is increased.

  At this time, when the high frequency switch 32 is set to connect the matching circuit 21 and the radio circuit 23 when the Hall element 33 does not have a magnetic field in the vicinity, The hinge part 4, the metal frame 1, and the circuit board 20 operate as a dipole antenna. In this case, a high antenna gain can be obtained in a state where the housing is opened and in a movie style. In particular, high antenna performance can be ensured in voice call status, videophone status and i-mode (registered trademark) use.

  When the high frequency switch 32 is set so that the matching circuit 31 and the radio circuit 23 are connected when a magnetic field is present in the vicinity of the hall element 33, the state of the portable radio set closed and the viewer state shown in FIG. In other words, power is supplied to the conductor plate 30 from the matching circuit 31, and the conductor plate 30 operates as a monopole antenna. At this time, the parallel part of the conductor plate 30 and the hinge metal fitting 11 is electrically coupled, and the deterioration of the antenna performance due to the reduction of the radiation resistance of the conductor plate 30 can be reduced by adjusting the circuit element 36, and the housing High antenna performance can be obtained in the closed state and the viewer state. In particular, high antenna performance in the standby state can be ensured.

  As described above, in the folding portable wireless device of this embodiment, high antenna performance can be ensured in all of the various usage modes provided by the biaxial hinge mechanism, and the dedicated antenna disposed in the upper housing Since no power supply line for supplying power to the element is required, the configuration is simple and the number of assembly steps can be reduced.

  Further, in the closed state and the viewer state, the antenna performance deterioration due to the electrical coupling between the conductor plate 30 as the antenna element and the biaxial hinge portion 4 is simply caused by the grounding of the biaxial hinge portion 4 and the circuit board 20. It can be improved by a simple method of inserting a reactance element between the pattern and high antenna performance can be secured in a standby state.

  Since the power supply terminal 16 and the conductor plate 30 are easily capacitively coupled, it is desirable that the distance between the power supply terminal 16 and the conductor plate 30 be a certain distance, for example, 2 mm or more.

  Further, the method of detecting the open / close state and switching the high frequency switch 32 is not limited to the method using the Hall element and the permanent magnet, but is a method of switching in conjunction with the operating state of the portable wireless device such as a call state or a standby state. There may be.

  Although various embodiments of the present invention have been described above, the present invention is not limited to the matters shown in the above-described embodiments, and those skilled in the art will be able to understand based on the claims and the description of the specification and well-known techniques. Such changes and applications are also within the scope of the present invention, and are included in the scope for which protection is sought.

  As described above, according to the foldable portable wireless device according to the present invention, there are various effects brought about by the two-axis hinge mechanism in the opened state, the closed state, the movie style, and the viewer state. It can be expected that the number of assembling steps can be reduced while ensuring high antenna performance in all usage forms.

DESCRIPTION OF SYMBOLS 1 Metal frame 2 Upper case 3 Lower case 4 2-axis hinge part 5 Rotating shaft 6 Rotating axis 7 Display screen 8 Mounting screw 9 Screw hole 10 Hinge bracket 11 Hinge bracket 12 Mounting screw 13 Hinge bracket 14 Hinge bracket 15 Mounting screw 16 Power supply Terminal 17 Mounting screw 18 Mounting screw 19 Screw hole 20 Circuit board 21 Matching circuit 22 Camera 23 Radio circuit 24 Sheet metal

Claims (9)

A foldable portable wireless device in which an upper housing and a lower housing are connected by a two-axis hinge mechanism that is rotatable in two different directions,
A first antenna element provided in the upper housing;
A first hinge element that mechanically supports the upper housing and is electrically connected to the first antenna element;
A second hinge element that mechanically supports the first hinge element so as to be rotatable about a first rotation axis and is electrically connected to the first hinge element;
A third hinge element that mechanically supports the second hinge element so as to be rotatable about a second rotation axis and is electrically connected to the second hinge element;
A first power feeding unit that feeds power to the third hinge element from a circuit board provided in the lower housing;
A foldable portable radio device comprising an electrical connection member electrically connected to both the first hinge element and the first antenna element at a substantially center of the first antenna element.   The folding portable wireless device according to claim 1, wherein a conductive frame constituting a part of the upper housing is used as the first antenna element. A second antenna element provided in the lower housing;
A second power feeding unit that feeds power from the circuit board to the second antenna element;
The folding portable wireless device according to claim 1 or 2, further comprising a switching unit that selects one of the first power feeding unit and the second power feeding unit. A fourth hinge element that mechanically supports the second hinge element so as to be rotatable about the second rotation axis and is electrically connected to the second hinge element;
The folding portable wireless device according to claim 3, further comprising a grounding portion that electrically connects the fourth hinge element and a ground pattern on the circuit board. A fourth hinge element that mechanically supports the second hinge element so as to be rotatable about the second rotation axis and is electrically connected to the second hinge element;
The foldable portable radio device according to claim 3, further comprising a reactance element inserted between the fourth hinge element and a ground pattern on the circuit board.   The folding portable wireless device according to any one of claims 3 to 5, wherein at least a part of the second antenna element is disposed in parallel with the second rotation axis.   The foldable portable wireless device according to claim 4 or 5, wherein the fourth hinge element and the third hinge element are arranged at a predetermined interval. An opening / closing detection control unit that controls the switching unit according to a result of detecting an opening / closing state around the second rotation axis of the upper housing and the lower housing;
The foldable portable wireless device according to any one of claims 3 to 7, wherein the switching unit selects the first power feeding unit when the housing is in an open state and selects the second power feeding unit when the housing is in a closed state. . An operation state detection control unit for controlling the switching unit according to the result of detecting the operation state of the portable wireless device;
The said operation state detection control part selects a 1st electric power feeding part in the telephone call or communication state of a housing | casing, and selects a 2nd electric power feeding part in a stand-by state, The any one of Claims 3-7. Folding portable radio.

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