JP2012253711A - Portable radio - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable radio having a folding structure which reduces influences of noise, occurring from a connection line connecting a circuit board in a lower housing with a circuit board in an upper housing, on an antenna and also reduces the deterioration of the antenna gain.SOLUTION: A portable radio includes: a first circuit board 101 provided in a lower housing 10; a second circuit board 201 provided in an upper housing 20; a third circuit board 102 provided in the lower housing 10; a radio part 103 provided on the third circuit board 102; an electric power supply part 105 supplying electric power from the radio part 103 to a hinge guide 30 through a power supply sheet plate 104; and a connection line 40 electrically connecting the first circuit board 101 with the second circuit board 201. The electric power supply part 105 is disposed on a surface of the third circuit board 102 which is located opposite side of a connection part 109, connecting the connection line 40 with the first circuit board 101, in the thickness direction of the lower housing 10.

Description

  The present invention relates to a portable wireless device having a folding structure.

  The portable wireless device of the folding structure has a structure in which the lower casing and the upper casing can be pivotably connected to be opened and closed, the lower casing and the upper casing are pivotably coupled, and the upper casing With a structure (called a swivel structure) in which the body can be rotated 180 degrees in the horizontal direction (in this case, the opening and closing direction of the upper and lower housings is vertical), in each of the vertical and horizontal directions There is a structure that can be folded (called a double structure).

  The circuit board arranged in the lower casing of the portable wireless device having the folding structure and the circuit board arranged in the upper casing are electrically connected by a connection line such as a flexible cable or a fine coaxial cable. Since a signal flows through this connection line, noise is generated. If there is an antenna in the vicinity of the connection line, it is affected by noise from the connection line, leading to a decrease in communication quality. For example, in the electronic device disclosed in Patent Document 1, a connection line is wound around a metal component serving as a rotating shaft to capacitively couple the metal component to the ground of the circuit board. By connecting, the influence of noise generated from the connection line is reduced.

  Further, in the foldable portable radio device disclosed in Patent Document 2, a conductor member (what is called a “hinge core”) serving as a rotating shaft of a hinge is used as an antenna, and this antenna is one side surface in the housing width direction. On the other hand, the connection line connecting the circuit board in the lower housing and the circuit board in the upper housing is arranged on the other side surface to reduce the influence of noise generated from the connection line. .

  Note that the influence of the connection line connecting the circuit board in the lower housing and the circuit board in the upper housing on the antenna includes a reduction in antenna gain in addition to noise. That is, if a connection line exists in the vicinity of the antenna, electromagnetic coupling occurs with the antenna, and this causes a reduction in antenna gain.

JP 2009-239820 A JP 2006-054843 A

  However, in the electronic device disclosed in Patent Document 1, although the influence of noise generated from the connection line can be reduced, a metal component wound with the connection line cannot be used as an antenna.

  In the foldable portable wireless device disclosed in Patent Document 2, the influence on the hinge core due to noise generated from the connection line can be reduced, but when the conductor member on the side where the connection line is arranged is also used as an antenna, the connection line It will be affected by the noise generated from the. Further, the antenna gain is reduced due to the proximity of the connection lines.

  In recent years, portable radio devices have been equipped with various applications such as GPS (Global Positioning System), Bluetooth, terrestrial digital television (so-called one-segment), RFID (Radio Frequency IDentification), and antennas accordingly. Multi-banding is attempted. From this situation, it is important to secure as many antennas as possible.

  The present invention has been made in view of such circumstances, and in a portable wireless device having a folding structure, when a hinge that connects the upper and lower housings is used as an antenna, a circuit substrate in the lower housing and a circuit substrate in the upper housing. It is an object of the present invention to provide a portable wireless device that can reduce the influence of noise generated from a connection line connecting the two and the antenna line and that can reduce deterioration of antenna gain due to the proximity of the connection line.

  The portable wireless device of the present invention is a portable wireless device in which a first housing and a second housing are connected to each other by a hinge guide and a hinge core so as to be opened and closed. The first wireless device is provided in the first housing. A circuit board; a second circuit board provided in the second casing; a third circuit board provided in the first casing; and a wireless unit provided in the third circuit board A power supply unit that supplies power from the wireless unit to the hinge guide via a power supply sheet metal, and a connection line that electrically connects the first circuit board and the second circuit board. In the third circuit board, the connection line and the connection part of the first circuit board are arranged on the opposite surfaces in the thickness direction of the first casing.

  According to the said structure, the distance in a housing thickness direction can be taken long with a feeding part, and a connection part and the connection part of a 1st circuit board. Therefore, when the hinge guide is used as an antenna, it is possible to reduce the influence of noise generated from the connection line and to reduce the deterioration of the antenna gain.

  In the above configuration, a part of the power feeding sheet metal is provided along the side surface of the first casing.

  According to the above configuration, since a part of the power feeding sheet metal is also disposed on the side surface of the housing, the distance between the power feeding sheet metal and the connection line in the frame width direction can be increased. Therefore, the influence of noise generated from the connection line can be reduced, and the deterioration of the antenna gain can be reduced.

  According to the present invention, when a hinge that connects the upper and lower casings is used as an antenna in a portable wireless device having a folding structure, the antenna is generated from a connection line that connects the circuit board in the lower casing and the circuit board in the upper casing. The influence of noise can be reduced, and deterioration of the antenna gain due to the proximity of the connection line can be reduced.

1 is a schematic diagram showing a portable wireless device according to an embodiment of the present invention. The figure which shows the cross section of the sheet | seat for electric power feeding in the portable radio | wireless machine of FIG. The figure which shows roughly the application example of the sheet metal for electric power feeding of the portable radio | wireless machine of FIG.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments for carrying out the invention will be described in detail with reference to the drawings.

  FIG. 1 is a schematic view showing a portable wireless device according to an embodiment of the present invention. In the figure, the portable wireless device 1 according to the present embodiment is only opened and closed by pivotally connecting an upper housing (second housing) 20 to a lower housing (first housing) 10. It is a portable radio with a foldable structure. The lower housing 10 and the upper housing 20 are connected by a hinge guide 30 and a hinge core 31 so as to be opened and closed.

  A first circuit board 101 and a third circuit board 102 that are both formed in a rectangular shape are disposed in the lower housing 10. The third circuit board 102 is formed smaller than the first circuit board 101, and is arranged close to and in parallel with the first circuit board 101. A wireless unit 103 and a power supply unit 105 that supplies power from the wireless unit 103 to the hinge guide 30 via the power supply metal plate 104 are disposed at the upper corner portion of the left end of the third circuit board 102. The power feeding sheet metal 104 is formed in a substantially L shape as a whole, and is composed of a rectangular main portion 104a and a strip-like connection portion 104b extending from one corner of the main portion 104a. The tip end portion of the connecting portion 104 b of the power feeding sheet metal 104 is connected to the hinge guide 30.

  A second circuit board 201 is disposed in the upper housing 20. The first circuit board 101 in the lower housing 10 and the second circuit board 201 in the upper housing 20 are electrically connected by a connection line 40 such as a flexible cable or a fine coaxial cable. The connection line 40 is disposed on the hinge guide 30 side. A wireless unit 106 and a power supply unit 108 that supplies power from the wireless unit 106 to the hinge core 31 via the power supply sheet metal 107 are disposed in the upper corner portion of the right end of the first circuit board 101. The hinge guide 30 and the hinge core 31 are each used as an antenna.

  FIG. 2 is a view showing a cross section of the power supply sheet metal 104 in FIG. 1 and each member disposed in the vicinity thereof. In the figure, an arrow A indicates the thickness direction of the lower housing 10. A key operation unit 110 is disposed on the upper side of the lower casing 10 in the thickness direction, that is, on the front side of the lower casing 10. The first circuit board 101 is located below the lower casing thickness direction A of the key operation unit 110, and the third circuit board 102 is positioned below the lower casing thickness direction A of the first circuit board 101. Is located. The first circuit board 101 is provided with a connection portion 109 for connecting the connection line 40, and one end of the connection line 40 is connected to the connection portion 109. The connection portion 109 of the first circuit board 101 is disposed on the upper surface in the lower casing thickness direction A of the first circuit board 101, that is, the surface facing the key operation unit 110. In the third circuit board 102, the power supply part 105 of the third circuit board 102 is arranged on the opposite surface in the lower casing thickness direction A with respect to the connection line 40 and the connection part 109 of the first circuit board 101. .

  In this manner, the power supply unit is configured by arranging the connection unit 109 for connecting one end of the connection line 40 to the first circuit board 101 and the power supply unit 105 that supplies power from the radio unit 103 to the hinge guide 30. The distance L1 in the lower casing thickness direction A between the connection line 40 and the connection part 109 of the first circuit board 101 can be increased. Thereby, it is possible to reduce the influence of noise generated from the connection line 40 on the hinge guide 30 used as an antenna, and to reduce the deterioration of the antenna gain.

  Thus, according to the portable wireless device 1 of the present embodiment, in the portable wireless device 1 in which the lower housing 10 and the upper housing 20 are connected to each other by the hinge guide 30 and the hinge core 31, the lower housing 10 A first circuit board 101 disposed inside, a second circuit board 201 disposed within the upper casing 20, a third circuit board 102 disposed within the lower casing 10, and a third circuit board A wireless unit 103 provided on the circuit board 102, a power supply unit 105 that supplies power from the wireless unit 103 to the hinge guide 30 via the power supply sheet metal 104, and the first circuit board 101 and the second circuit board 201. And a connecting portion 40 for electrically connecting the wireless portion 103, the sheet metal 104 for feeding, and the feeding portion 105 to the connecting portion of the connecting line 40 and the first circuit board 101 in the third circuit board 102. 109 and lower casing thickness direction A The distance L1 in the lower casing thickness direction A between the feeding portion 105 and the connecting portion 40 and the connecting portion 109 of the first circuit board 101 can be made long, and the hinge is used as an antenna. The influence of noise from the connection line 40 on the guide 30 can be reduced, and deterioration of the antenna gain can be reduced. Since the hinge guide 30 can be used as an antenna without any problem, it is possible to cope with multiband antennas together with the hinge core 31 used as an antenna.

  In the portable wireless device 1 of the present embodiment, the power supply sheet metal 104 itself is provided on the third circuit board 102, but a part including the connection portion 104 b of the power supply sheet metal 104 is provided on the side surface of the lower housing 10. You can do it. FIG. 3 is a diagram schematically showing an example thereof. As shown in the figure, a portion (referred to as a “folded portion”) 104 c including the connecting portion 104 b of the power supply sheet metal 104 is bent at 90 degrees, and the bent portion 104 c is along the side surface 10 a of the lower housing 10. Provide. By providing the power sheet metal 104 in this way, the distance L2 between the power sheet metal 104 and the connection line 40 in the lower casing width direction B can be increased, and the influence of noise generated from the connection line 40 can be reduced. It is possible to reduce the deterioration of the antenna gain.

  In addition, the portable wireless device 1 of the present embodiment has a structure in which the upper housing 20 is rotatably connected to the lower housing 10 and can only be opened and closed. A swivel structure in which the upper housing is pivotably connected and the upper housing can be rotated 180 degrees in the horizontal direction, or a double that can be folded in the vertical and horizontal directions. Of course, it can be applied to the structure.

  The present invention provides a portable wireless device having a folding structure in which when a hinge that connects the upper and lower casings is used as an antenna, noise generated from a connection line that connects the circuit board in the lower casing and the circuit board in the upper casing. In addition to being able to reduce the influence, it is possible to reduce the deterioration of the antenna gain due to the proximity of the connection line, and it can be applied to a cellular phone having a folding structure.

DESCRIPTION OF SYMBOLS 1 Portable radio | wireless machine 10 Lower housing | casing 20 Upper housing | casing 30 Hinge guide 31 Hinge core 40 Connection line 101 1st circuit board 102 3rd circuit board 103,106 Radio | wireless part 104,107 Sheet metal for electric power supply 104a Main part of sheet metal for electric power supply 104b Connection part of sheet metal for power supply 104c Bending part of sheet metal for power supply 105, 108 Power supply part 109 Connection part 110 Key operation part 201 Second circuit board

Claims (2)

In the portable wireless device in which the first housing and the second housing are connected to each other by a hinge guide and a hinge core so as to be opened and closed.
A first circuit board provided in the first housing;
A second circuit board provided in the second housing;
A third circuit board provided in the first housing;
A wireless unit provided on the third circuit board;
A power feeding unit that supplies power from the wireless unit to the hinge guide via a sheet metal for power feeding;
A connection line for electrically connecting the first circuit board and the second circuit board,
In the third circuit board, the power feeding section is arranged such that the connection line and the connection section of the first circuit board are arranged on opposite surfaces in the thickness direction of the first casing. Portable radio. The portable wireless device according to claim 1,
The power feeding sheet metal is a portable wireless device in which a part thereof is provided along a side surface of the first casing.

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