JP2009111826A - Antenna device, and mobile wireless communication apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To attain miniaturization of an antenna device and a mobile wireless communication apparatus. <P>SOLUTION: A first case 1 and a second case 2 form, in a hinge part 3, first hinge case parts 15a and 15b and a second hinge case part 16 which are disposed while being divided turnably on the same axial line, respectively. One 15a of the first hinge case parts 15a and 15b and the second hinge case part 16 are connected turnably by a turning mechanism component 17 provided via through-holes provided on opposed faces of both cases. On a first circuit board 4, a high-frequency radio circuit 12 is mounted and the high-frequency radio circuit 12 is connected with a contact pattern via a power feeding line. A first antenna 6 is incorporated in the first hinge case part 15a, 15b and the first antenna 6 includes an antenna spring part 11 in a part thereof. The antenna spring part 11 is brought into contact with the contact pattern, thereby connecting the antenna 6 with the high-frequency radio circuit 12. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an antenna device for a portable wireless device, and more particularly to a technology for reducing a set size in a case where antennas of a plurality of systems are mounted on a mobile communication device such as a mobile phone.

  In recent years, mobile phone terminals have been made thinner and smaller, and the mounting space for various substrates and components in the housing has been reduced. Therefore, miniaturization of the antenna is also required. In particular, the antenna is required to have a large electrical volume in order to ensure its characteristics. In the prior art, the electrical volume of the antenna is secured by reducing the conductive members around the antenna and the ground pattern on the substrate, or by projecting the antenna mounting portion from the housing.

  For example, in the technique described in Patent Document 1 below, an upper substrate is provided inside a conductive upper casing included in the upper unit, and a flexible cable is provided inside a non-conductive lower casing included in the lower unit. In the cellular phone provided with the lower substrate connected to the upper substrate through the antenna element, the antenna element supported by the auxiliary metal fitting is provided in the lower unit and in the vicinity of the hinge portion. In addition to fixing the upper substrate to the upper housing with screws, a configuration is disclosed in which the ground portion of the upper substrate is electrically connected to the upper housing via a plurality of conductive screws in the vicinity of the flexible cable. ing. With such a foldable structure, the directivity of the antenna in the portable wireless device in which the antenna is provided in the lower unit and in the vicinity of the hinge portion can be improved.

JP 2006-254375 A

  However, even the configuration described in Patent Document 1 is insufficient in terms of downsizing.

  It is an object of the present invention to further reduce the size of an antenna device and a mobile radio communication device.

  According to one aspect of the present invention, a first casing, a second casing, a first hinge casing extended from the first casing, and an extension from the second casing. A second hinge housing, wherein the first hinge housing and the second hinge housing constitute a hinge rotation unit, and the first housing and the second housing A body is a mobile radio communicator connected by the hinge rotating part, and the mobile radio communicator is provided with a first antenna built in the hinge rotating part. Is done. Thereby, the mounting space in the first housing is not affected by the antenna mounting. Also, when placing the terminal in an open state, such as when watching TV or hands-free calling, the antenna is far from the surface on which it is placed even if it is placed on a metal or lossy material.

  A first casing; a second casing; a first hinge casing extended from the first casing; and a second hinge casing extended from the second casing. The first hinge case and the second hinge case constitute a hinge rotation part, and the first case and the second case are the hinge rotation part. A mobile radio communication apparatus connected by a moving unit, wherein the first antenna is built in the first hinge housing, and the first hinge housing is provided in the hinge rotating unit. A mobile radio communication device is provided, which is arranged at an end portion in the rotation axis direction. This makes it possible to secure a wider space around the antenna.

  It is preferable that the first hinge housing is provided on both sides of the second hinge housing, and the antenna is disposed on either one of them. Further, the first hinge housing and the second hinge housing are pivotably connected to each other, and a hinge metal plate for holding the pivot mechanism component is provided. Since it has at least a hinge metal vertical surface perpendicular to the rotation axis of the rotation mechanism part, it is preferable that the area on the opposite side of the antenna with the hinge rotation mechanism part is shielded by a hinge metal plate. .

The antenna further includes a second antenna, the second antenna is disposed at an end of the first housing on the hinge side, and the hinge metal vertical surface is formed between the first antenna and the second antenna. The two antennas are shielded by the hinge metal vertical plane because they are placed in between.
In the above, if the first antenna is compatible with the GPS system, it receives GPS signals from the zenith direction and the upper hemisphere above the horizontal plane.

  In the above, the second housing and the second hinge housing are connected via the second rotation mechanism component that can rotate around an axis orthogonal to the rotation axis of the rotation mechanism component. Since the case is provided with a screen display portion, it can be in two closed states: a shape closed with the screen display portion inside and a shape closed with the screen display portion outside.

  In the above configuration, the first circuit board in the first housing, the first contact pattern formed on the first circuit board, the first contact pattern, and the first load constant circuit are provided. And the hinge metal plate is connected to the first contact pattern, so that the hinge as an antenna current path can be adjusted by adjusting the first load constant circuit. You can change the appearance of metal.

  According to the mobile radio communication apparatus of the present invention, the first casing, the second casing, the first hinge casing extended from the first casing, and the second casing are extended. The second hinge housing and the rotating mechanism component are connected, and the first hinge housing and the second hinge housing are rotatably connected on the same axis via the rotating mechanism component. In the configuration in which the hinge rotating part is configured, and the first casing and the second casing are connected to be able to be opened and closed by the hinge rotating part, an antenna is built in the hinge rotating part, The mounting space in the first housing is not affected by the antenna mounting. Therefore, the entire mobile terminal can be reduced in size and thickness, and a mobile radio communication device excellent in portability can be provided.

  In addition, when installing the terminal with the terminal open, such as when watching TV or hands-free calls, the antenna is far from the installation surface even if it is placed on a metal or lossy material. There is an advantage that can be reduced.

  Hereinafter, mobile radio devices according to embodiments of the present invention will be described with reference to the drawings. In all the drawings for explaining the embodiments, the same reference numerals are given to the parts having the same functions, and the same parts are denoted by the same reference numerals except for the parts characterizing the present invention. Description is omitted.

  First, a first embodiment of the present invention will be described. 1A (a), (b), and FIG. 1B (c) are diagrams showing a configuration example of a mobile phone that is an example of a mobile radio according to the first embodiment of the present invention. 1A is a side view, FIG. 1A (b) is a front perspective view showing a typical internal structure, and FIG. 1B (c) is a rear perspective view showing a typical internal structure.

  The cellular phone according to the present embodiment includes a first casing 1 and a second casing 2 that are rotatably connected via a hinge portion 3. The first housing 1 and the second housing 2 are divided into a hinge portion 3 in which the first hinge housing portion 15 and the second hinge housing portion 16 are arranged so as to be rotatable on the same axis. And the second hinge housing part 16 is disposed so as to be sandwiched between the first hinge housing parts 15a and 15b. In addition, one of the first hinge housing portions 15a and 15b and the second hinge housing portion 16 are provided through, for example, through holes provided in opposing surfaces of both housings. It is connected so as to be rotatable by a rotating mechanism component 17.

  A first circuit board 4 is built in the first housing 1, and the first circuit board 4 is built in the second housing 2 via a signal transmission coaxial cable 18. The circuit board 5 is connected. The signal transmission coaxial cable 18, one end of which is connected to the first circuit board 4, extends from the first housing 1 to the first hinge housing portion 15 a on the side where the rotation mechanism component 17 is not disposed. Enters the second casing 2 through the second hinge casing 16 so as to be substantially along the hinge rotation axis, and the other end is connected to the second circuit board 5. A high-frequency radio circuit 12 is mounted on the first circuit board 4, and the high-frequency radio circuit 12 is connected to the contact pattern 13 via a feed line 14. The first hinge housing portion 15 incorporates a first antenna 6, and the first antenna 6 includes an antenna spring portion 11 at a part thereof. The antenna 6 is connected to the high-frequency radio circuit 12 by bringing the antenna spring portion 11 into contact with the contact pattern 13.

  In the mobile phone according to the present embodiment, the antenna 6 is mounted at a position away from the mounting component in the first casing 1 and the first circuit board 4. Therefore, it is not necessary to secure the electrical volume of the antenna 6. That is, since it is possible to mount components on the first circuit board 4 up to the hinge side end of the first housing 1, it is not necessary to sacrifice the mounting area for antenna characteristics. The space in the housing can be used effectively. In addition, because of the antenna characteristics, it is not necessary to ensure the height from the ground pattern on the first circuit board 4 or the mounted components, and thus the first housing 1 can be configured to be thin. The device can be reduced in size and thickness, and a mobile phone terminal excellent in portability can be realized.

  Further, when using the mobile terminal with the mobile terminal opened, such as when watching TV or hands-free calling, the back side of the mobile terminal, that is, the first hinge casing portion 15a of the first casing 1 The surface opposite to the surface on which 15b is formed is the installation surface. However, even when a metal or lossy material is close to the installation surface, the antenna 6 is mounted at a position away from the installation surface. Stable performance that is less affected by these effects can be provided.

  Furthermore, when the antenna 6 and the high-frequency radio circuit 12 in the above-described embodiment are particularly compatible with the GPS system, a form in which the position information is acquired while opening the mobile terminal and viewing the display unit 10 is conceivable. In this case, since the antenna 6 has a relatively good line-of-sight arrangement with respect to the zenith direction where the GPS satellite exists and the upper hemisphere above the horizontal plane, there is also an advantage that a stable reception state can be secured for the GPS signal.

  In the present embodiment, a structure in which the transmitter 7 and the operation key 8 are arranged on the first housing 1 side and the receiver 9 and the display unit 10 are arranged on the second housing 2 side is used. As described above, the transmitter 7 and the operation key unit 8 are disposed on the second housing 2 side, and the receiver 9 and the display unit 10 are disposed on the first housing 1. There may be.

  Further, in the present embodiment, the structure in which the first hinge housing parts 15a and 15b are arranged on both sides of the second hinge housing part 16 has been described as an example. However, the first hinge housing part and the second hinge housing part 15 One hinge housing part may be arranged one by one, or the first hinge housing part or the second hinge housing part may be further divided into a plurality of parts.

  Next, a second embodiment of the present invention will be described. 2A (a) to 2C (d) are diagrams showing a configuration example of the mobile phone according to the present embodiment, FIG. 2A (a) is a side view, and FIG. 2A (b) is an internal structure example. 2B is a perspective view of the first circuit board, and FIG. 2B (c) is a perspective view of the first circuit board. FIG. 2D (e) is a perspective perspective view showing a typical internal structure example in the first housing.

  As shown in FIG. 2B (c), the rotation mechanism component 17 provided in the hinge portion is held by a hinge metal plate 19. The hinge metal plate 19 includes a base portion 19-1 extending in the width direction of the mobile phone, side portions 19-2 and 19-3 that bend in the vertical direction on both sides thereof, and a pivot protruding from the side portion 19-2, for example. The surface 19A perpendicular to the rotation axis of the mechanical component 17 and the end portions of the side portions 19-2 and 19-3 are provided in parallel to the surface of the housing and configured to contact the first circuit board 4. A first hinge metal contact portion 20 and a second hinge metal contact portion 21 which are contact portions.

  As shown in FIG. 2C (d), a first hinge contact pattern 22 provided on the first circuit board 4 at a position in contact with the first hinge metal contact portion 20 and a second hinge metal contact. And a second hinge contact pattern 23 provided at a position in contact with the portion 21. Both the first hinge contact pattern 22 and the second hinge contact pattern 23 are double-sided patterns in which patterns formed on both the front and back surfaces of the first circuit board 4 are conducted through through holes. Further, the first hinge contact pattern 22 and the second hinge contact pattern 23 are respectively connected to the ground pattern of the first circuit board 4 via the first hinge load constant portion 24 and the second load constant portion 25. (Not shown, but formed on the first circuit board 4 and forms a ground, for example). Note that the description of the character GND is added to only two places in FIG. 2A (b), but the characters GND are omitted in other portions.

  Further, the first circuit board 4 includes the first high-frequency radio circuit 12, the first contact pattern 13, the first high-frequency radio circuit 12, and the first power supply line 14 that connects the first contact pattern 13. And have. The first contact pattern 13 is a double-sided pattern in which patterns formed on both sides of the first circuit board 4 are conducted through through holes. Therefore, as shown in FIG. 2D (e), the first antenna 6 built in the first hinge housing portion 15b (FIG. 1) is connected to the first contact pattern via the first antenna spring portion 11. 13 is connected to the first high-frequency radio circuit 12. Furthermore, the first circuit board 4 includes the second high-frequency radio circuit 26, the second contact pattern 27, the second high-frequency radio circuit 26, and the second feed line connecting the second contact pattern 27. 28. The second antenna 29 has a hinge-side end portion of the first housing 1 such that at least an open end thereof is a region on the opposite side of the first antenna 6 with the vertical surface 19A of the hinge metal plate interposed therebetween. And is connected to the second high-frequency radio circuit 26 by being connected to the second contact pattern 27 via the second antenna spring portion 30. Here, the communication system used by the first antenna 6 and the first high-frequency circuit 12 and the communication system used by the second antenna 29 and the second high-frequency circuit 26 are different communication systems.

  As described above, according to this embodiment, since the signal transmission coaxial cable 18 is shielded from the first antenna 6 by the vertical surface 19A of the hinge metal plate, the signal transmission coaxial by the hinge rotation is performed. It becomes difficult to be affected by the state change of the cable 18. Therefore, there is an effect that stable antenna characteristics can be obtained.

  In addition, the first antenna and the second antenna used in different communication systems, in particular, their open ends are shielded by the vertical surface 19A of the hinge metal plate and arranged at a position apart from each other. Thus, interference between the antennas can be reduced. Therefore, when there is no vertical surface 19A of the hinge metal plate, in order to reduce interference, it is necessary to increase the volume of at least one of the antennas in order to further increase the distance between the two antennas. It is possible to arrange the locations that lead to the increase in the volume of the terminal itself without affecting each other's antenna volume, and as a result, the volume of the mobile phone terminal mounted with multiple system antennas is reduced it can.

  Furthermore, by adjusting the first hinge load constant portion 24 and the second load constant portion 25, the appearance of the hinge metal plate 19 as the antenna current path can be changed. Therefore, when the antenna current distribution on the hinge metal plate 19 is a distribution that cancels the radiation, this can be avoided, and further, the current distribution that contributes to the radiation can be adjusted. As a result, higher antenna efficiency can be obtained.

  In general, since an antenna is strongly coupled at an open end (a tip portion far from the power feeding unit), coupling through a space can be reduced by separating the open ends and shielding them with a metal plate. In addition, the antenna radiation characteristics of a mobile phone or the like are determined not only by the antenna but also by the antenna current distribution of the entire mobile phone including the current (antenna current) flowing through a conductor such as a housing or a substrate. In particular, since the current density is high near the antenna feeding portion, it is necessary to pay attention to how the antenna current is placed on a metal object in the vicinity of the antenna. When the hinge metal plate in the present embodiment is not connected to the substrate GND or is directly connected to the substrate GND, it is difficult to control the current distribution on the hinge metal (substrate or antenna). Change the distance between and the hinge metal shape, etc.). Therefore, the GND metal on the substrate (where the antenna current is also mounted) is separated from the hinge metal, connected with the load constant, and the load constant is adjusted to adjust the position of the hinge metal itself. The current distribution on the hinge metal can be adjusted without changing the shape.

In the above-described embodiment, the transmitter 7 and the operation key unit 8 may be arranged in the second casing 2, and the receiver 9 and the display unit 10 may be arranged in the first casing 1. .
In the above-described embodiment, the second antenna 29 is different from the second hinge housing portion (FIG. 1) or the first hinge housing portion (FIG. 1) different from the one incorporating the first antenna. It may be built in.

(Summary)
In the mobile radio communication apparatus according to the present embodiment, the first casing, the second casing, the first hinge casing extended from the first casing, and the second casing It has an extended second hinge housing and a rotating mechanism component, and the first hinge housing and the second hinge housing are rotatably connected on the same axis via the rotating mechanism component. As a result, a hinge rotating unit is configured, and the first casing and the second casing are connected to be opened and closed by the hinge rotating unit, and the hinge rotating unit has an antenna built therein. .

  Accordingly, since the mounting of the antenna does not affect the mounting space in the first housing, the entire mobile terminal can be reduced in size and thickness, and a mobile radio communication device excellent in portability can be provided.

Also, when installing the device with the terminal open, such as when watching TV or hands-free calls, the antenna is far from the installation surface even if it is placed on a metal or lossy material. Can be suppressed.
Further, in the above, the antenna is built in the first hinge housing, and the first hinge housing is disposed at the end portion in the rotation axis direction in the hinge rotation portion, thereby securing a wider space around the antenna. Therefore, it is possible to reduce the size of the antenna and improve the antenna characteristics by a more advantageous antenna arrangement.
At this time, it has a hinge metal plate for holding the rotation mechanism component, and the hinge metal plate is provided with at least a hinge metal vertical surface perpendicular to the rotation axis of the rotation mechanism component, so that the hinge rotation mechanism component is removed from the antenna. The area on the opposite side sandwiched is shielded by a hinge metal plate. Therefore, it becomes difficult to be affected by the state change of the signal cable or the like passing through the area, and more stable antenna characteristics can be obtained.

  Further, in the above, the antenna further includes a second antenna, the second antenna is disposed at an end of the first housing on the hinge side, and the hinge metal vertical surface is between the antenna and the second antenna. By arranging, two antennas used in different communication systems can be arranged at positions separated by shielding the open ends with hinge metal plates. As a result, it is possible to reduce the interference between the antennas through the space, so that it is possible to arrange them closely without affecting each other's antenna volume, and as a result, multiple system antennas are mounted. The volume of the mobile phone terminal can be reduced.

In the mobile terminal moving body described above, if the antenna is compatible with the GPS system, when the mobile terminal is opened and the position information is acquired while looking at the display unit, the antenna is above the zenith direction where the GPS satellite exists and above the horizontal plane. Since the arrangement is relatively within the line of sight with respect to the hemisphere, it is possible to ensure a stable reception status for GPS signals.
At this time, the second casing and the second hinge casing are connected via a second rotating mechanism component that can rotate around an axis orthogonal to the rotating axis of the rotating mechanism component. Since the housing 2 has a screen display unit, it can take two closed states: a shape that closes with the screen display unit on the inside and a shape that closes with the screen display unit on the outside. When the position is confirmed while looking at the screen display using GPS, the antenna is relatively visible to the zenith direction where the GPS satellite exists and the upper hemisphere above the horizontal plane. Therefore, it is possible to secure a stable reception status with respect to GPS signals.

  In the above, the first circuit board in the first housing, the first contact pattern formed on the first circuit board, and the first contact pattern and the first load constant circuit are connected. The hinge metal plate is connected to the first contact pattern, and by adjusting the first load constant circuit, the appearance of the hinge metal as the antenna current path Can be changed. Therefore, when the antenna current distribution on the hinge metal plate 19 is a distribution that cancels the radiation, this can be avoided, and further, the current distribution that contributes to the radiation can be adjusted. As a result, higher antenna efficiency can be obtained.

  The present invention can be used for portable wireless devices and the like.

(A) is a side view of the mobile radio communication apparatus by the 1st Embodiment of this invention, (b) is a front view. It is a rear view of the mobile radio communication apparatus by this Embodiment. (A) is a side view of the mobile radio | wireless communication apparatus by the 2nd Embodiment of this invention, (b) is a rear view. It is the figure which showed the shape of the hinge part which comprises the mobile radio | wireless communication apparatus by this Embodiment. It is a figure which shows one structural example of the 1st circuit board which comprises the mobile radio | wireless communication apparatus by this Embodiment. It is a figure which shows the typical structural example of 1 in the 1st housing | casing which comprises the mobile radio | wireless communication apparatus by this Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 1st housing | casing 2 2nd housing | casing 3 Hinge rotation part 4 1st circuit board 5 2nd circuit board 6 Antenna, 1st antenna 7 Transmission part 8 Operation key part 9 Reception part 10 Display part DESCRIPTION OF SYMBOLS 11 Antenna spring part, 1st antenna spring part 12 High frequency radio circuit, 1st high frequency radio circuit 13 Contact pattern, 1st contact pattern 14 Feed line, 1st feed line 15 1st hinge housing | casing part 16 1st 2 hinge housing parts 17 rotating mechanism parts 18 signal transmission coaxial cable 19 hinge metal plate 19A vertical surface 20 of hinge metal plate first hinge metal contact portion 21 second hinge metal contact portion 22 first hinge contact Pattern 23 Second hinge contact pattern 24 First hinge load constant portion 25 Second hinge load constant portion 26 Second high-frequency radio circuit 27 Second contact pattern 28 Second feed line 29 Second antenna 30 second antenna spring portion

Claims (8)

A first casing, a second casing, a first hinge casing extended from the first casing, a second hinge casing extended from the second casing, The first hinge housing and the second hinge housing constitute a hinge rotating portion, and the first housing and the second housing are the hinge rotating portion. A mobile radio communicator connected by
A mobile radio communication device, wherein a first antenna is built in the hinge rotation unit. A first casing, a second casing, a first hinge casing extended from the first casing, a second hinge casing extended from the second casing, The first hinge housing and the second hinge housing constitute a hinge rotating portion, and the first housing and the second housing are the hinge rotating portion. A mobile radio communicator connected by
The first antenna is built in the first hinge casing, and the first hinge casing is disposed at a rotation axis direction end in the hinge rotation section. Mobile radio communication device.   The moving body according to claim 2, wherein the first hinge housing is provided on both sides of the second hinge housing, and the first antenna is disposed on either one of the two hinge housings. Wireless communication device.   And a pivot mechanism component for pivotally connecting the first hinge housing and the second hinge housing, and a hinge metal plate for holding the pivot mechanism component. The mobile radio communication device according to claim 2 or 3, further comprising at least a hinge metal vertical surface perpendicular to a rotation axis of the moving mechanism component.   The mobile radio communication according to claim 4, further comprising a second antenna, wherein the hinge metal vertical surface is disposed between the first antenna and the second antenna. Machine.   The mobile radio communication device according to any one of claims 1 to 5, wherein the first antenna is compatible with a GPS system.   The second casing and the second hinge casing are connected via a second rotating mechanism component that is rotatable about an axis orthogonal to the rotation axis of the rotating mechanism component, The mobile radio communication device according to claim 6, wherein a screen display unit is provided on the second housing side. The first circuit board in the first casing, the first contact pattern formed on the first circuit board, and the first contact pattern and the first load constant circuit are connected to each other. A first ground pattern,
The mobile radio communication device according to any one of claims 4 to 7, wherein the hinge metal plate is connected to the first contact pattern.

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