JP2017146883A - Portable information device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable information device capable of achieving a thinness of a case and securing a transmission quality, while satisfying a standard set forth in laws and regulations relating to electric waves at a low cost even if configured to mount an antenna on a structure capable of rotating a display case up to a 360 degree position against a main body case.SOLUTION: A portable information device 10 is configured to be capable of rotating from a zero degree position where a top surface 14a of a display case 14 and a top surface 16a of a main body case 16 face each other to a 360 degree position where rear surfaces 14b, 16b thereof face each other, and includes: an antenna 24 installed inside the main body case 16; and a movement mechanism 26 operating in association with a rotating operation of the display case 14 relative to the main body case 16, and for moving the antenna 24 to a first position closer to the top surface 16a than the rear surface 16b of the main case 16 and to a second position closer to the rear surface 16b than the top surface 16a of the main body case 16.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a portable information device having an antenna for wireless communication.

  Considering the widespread use of wireless communication devices used in close proximity to the human body, such as mobile phones and information processing devices, in many countries, the SAR (Specific Absorption Rate) is an index of the amount of radio wave energy absorbed by the human body. ) Has established a standard for the allowable amount. SAR means energy absorbed per unit time in human tissue of unit mass, and the influence (absorption rate) on the human body increases as the frequency increases. For example, in Japan, a land mobile station that performs portable wireless communication is obliged to set a local SAR, which is a SAR for a specific part of a human body, to a predetermined value or less according to an ordinance of the Ministry of Internal Affairs and Communications and a radio equipment rule.

  SAR may also be a problem in portable information devices such as notebook personal computers (notebook PCs) and tablet personal computers (tablet PCs). Specifically, for example, a notebook PC or a tablet PC may be used on a user's knee. In this posture, there is a possibility that the case of the notebook PC or tablet PC and the user's knee or abdomen may come into contact or approach each other.

  In order to set the SAR for a specific part of the human body to a predetermined value or less, for example, when an antenna having directivity in all directions is incorporated in the housing, the distance between the antenna and the bottom surface of the housing should be a predetermined value or more. Or, it is necessary to reduce the transmission power of the wireless module. However, in order to set the distance between the antenna and the bottom surface of the casing to a predetermined value or more, the casing needs to be thick, and there is a problem that the casing cannot be thinned. In addition, when the transmission power of the wireless module is lowered, there is a problem that the transmission quality is lowered.

  By the way, in recent years, a convertible tablet personal computer (convertible PC) has been proposed in which a display casing having a display can be rotated from 180 degrees to 360 degrees with respect to a main body casing having a keyboard. The convertible PC can be used in two ways: a notebook PC and a tablet PC, and is very convenient for the user.

  However, in such a convertible type PC, the bottom surface of the device differs depending on the usage type of the notebook type PC and the usage type of the tablet type PC. In view of this, the present applicant has proposed a configuration in which an antenna for wireless communication is mounted on a convertible PC while avoiding the problem of thinning the casing and transmission quality in Patent Document 1. That is, in this configuration, two antennas directed to the front side and the back side of the main body casing are mounted, and the above problems are solved by switching and controlling each antenna according to the usage form of the convertible PC.

JP2015-114718A

  However, in the configuration of Patent Document 1, two antennas are mounted in the main body housing, which increases the cost and installation space.

  The present invention has been made in consideration of the above-described problems of the prior art, and even if the antenna is mounted in a configuration in which the display casing can be rotated to a position of 360 degrees with respect to the main body casing, An object of the present invention is to provide a portable information device that can reduce the thickness of the casing and ensure the transmission quality while satisfying the standards stipulated in radio wave laws and regulations.

  A portable information device according to the present invention is configured such that a main body housing having an operation means on a surface and a display housing having a display on a surface are rotatably connected by a hinge, and the main body housing and the display housing are connected to each other. A portable information device capable of rotating from a 0 degree position where the front surfaces face each other to a 360 degree position where the back surfaces of the main body case and the display case face each other, and is disposed inside the main body case A first position in which the antenna is moved closer to the front surface than the back surface of the main body housing, and the antenna is operated in conjunction with a rotation operation of the display housing with respect to the main body housing; And a moving mechanism for moving to a second position closer to the back surface than to the front surface.

  According to such a configuration, for example, the bottom surface of the device has a front surface and a back surface of the main body housing in a usage mode of a notebook PC with a display housing around 100 degrees and a usage mode of a tablet PC with a 360-degree position. However, the moving mechanism moves the antenna to a position corresponding to the usage pattern. As a result, even if two antennas corresponding to each usage pattern are not mounted, it is possible to secure a sufficient distance between the bottom surface and the antenna in each usage pattern so that the laws and regulations relating to radio waves are not more than a predetermined value. And can meet the standards of laws related to radio waves at low cost. In addition, the distance between the bottom surface and the antenna in each usage pattern can be secured by moving the antenna within the main body casing. For this reason, it is possible to ensure the distance between the antenna and the bottom surface while preventing the casing from becoming thick and reducing the thickness. Further, for example, in the case of one usage pattern, it is not necessary to reduce the transmission power from the antenna, and the transmission quality is not reduced.

  The moving mechanism may be configured to move the antenna in conjunction with a rotation operation of the hinge when the display housing is opened and closed with respect to the main body housing. If it does so, the change of a usage pattern and the position of an antenna can be linked with a simple structure which does not use the means etc. which detect a usage pattern.

  The moving mechanism is configured to arrange the antenna at the first position at least in a predetermined angle range from the 0 degree position to the 180 degree position, and to arrange the antenna at the second position at least at the 360 degree position. It may be. Then, in a portable information device such as a convertible PC, the antenna can be automatically arranged at a position optimal for the usage pattern in a notebook PC and the usage pattern in a tablet PC.

  The moving mechanism includes a rotating shaft member having a pressing piece for pressing the antenna, a link member for rotating the rotating shaft member in conjunction with a rotation operation of the hinge, and a pressing direction of the antenna by the pressing piece. The structure provided with the elastic member urged | biased to a reverse direction may be sufficient. If it does so, arrangement | positioning of an antenna can be controlled with a simple structure using a mechanical element.

  According to the present invention, even if two antennas corresponding to each usage pattern are not mounted, a sufficient distance is ensured between the bottom surface and the antenna in each usage pattern so that the laws relating to radio waves are not more than a predetermined value. Can reduce the cost. In addition, since the distance between the bottom surface and the antenna in each usage pattern can be secured by moving the antenna within the main body housing, the housing can be prevented from becoming thicker and thinner. Further, for example, in the case of one usage pattern, it is not necessary to reduce the transmission power from the antenna, and the transmission quality is not reduced.

FIG. 1 is a perspective view of a portable information device according to an embodiment of the present invention. FIG. 2 is a side view of the portable information device shown in FIG. 1 when used in a notebook PC. FIG. 3 is a side view in the case of using the tablet PC with the display housing rotated in the opening direction from the state shown in FIG. FIG. 4 is a side cross-sectional view schematically showing the internal structure of the main body housing in the usage form of the notebook PC. FIG. 5 is a side cross-sectional view schematically showing the internal structure of the main body housing in the usage form of the tablet PC. FIG. 6 is a plan view schematically showing the configuration of the moving mechanism. FIG. 7 is a plan view schematically showing a configuration example of the hinge. FIG. 8 is a development view of rail grooves formed on the outer peripheral surface of a spiral pin provided on the hinge. FIG. 9 is a plan view schematically showing the state of the link mechanism between the 0 degree position and the 180 degree position. FIG. 10 is a plan view schematically showing the state of the link mechanism at the 360-degree position.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of a portable information device according to the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a perspective view of a portable information device 10 according to an embodiment of the present invention, and shows a usage form in a notebook PC in which a display housing 14 is opened from a main body housing 16 by hinges 12L and 12R. FIG. 2 is a side view when the portable information device 10 shown in FIG. 1 is used in a notebook PC. FIG. 3 is a plan view of the display housing 14 rotated from the state shown in FIG. It is a side view at the time of setting it as the usage form with the tablet-type PC which was let it be 360 degree positions.

  The portable information device 10 according to the present embodiment can be suitably used as a notebook PC in a state in which the display housing 14 is rotated to an angular position of about 90 to 150 degrees with respect to the main body housing 16 (see FIG. 1 and FIG. 2), in a state where the display housing 14 is rotated to a position of 360 degrees with respect to the main body housing 16, it can be suitably used as a tablet PC (see FIG. 3), and is a so-called convertible PC. The present invention is applicable to various portable information devices such as a mobile phone, a smartphone, and an electronic notebook other than such a convertible PC.

  Hereinafter, the surface which is the operation surface of the main body housing 16 while visually recognizing the display 18 provided on the surface (inner surface) 14a of the display housing 14 on the basis of the usage pattern in the notebook type PC shown in FIGS. The front side is referred to as the front side (front) and the back side is referred to as the rear side (rear) in the direction seen from the user who operates the keyboard 20 or the touch pad 21 that is the operating means provided on the (upper surface) 16a. In the following description, the thickness direction of the body 16 is referred to as the vertical direction, and the width direction is referred to as the left-right direction.

  Further, for convenience of explanation, regarding the angular position of the display housing 14 with respect to the main body housing 16, the display housing 14 is completely closed with respect to the main body housing 16, and the surfaces 14a and 16a, that is, the display 18 and The posture where the keyboard 20 faces is referred to as a 0-degree position (see the display housing 14 indicated by one of the two-dot chain lines in FIG. 2). Then, with this 0 degree position as a reference, the display casing 14 will be described with an angle in the direction in which the display casing 14 is rotated in the opening direction. For example, a posture in which the display casing 14 and the main body casing 16 are orthogonally positioned at a 90 degree position. The posture in which the surfaces 14a and 16a face each other in the same direction (upward) and are parallel to each other is referred to as a 180-degree position (see the display housing 14 indicated by the other two-dot chain line in FIG. 2). Further, a posture in which the back surfaces of the display housing 14 and the main body housing 16 face each other, that is, the back surface (back surface) 14b of the display housing 14 and the back surface (bottom surface) 16b of the main body housing 16 face each other at 360 degrees (see FIG. 3). Shall be called. In addition, about the notation of 0 degree position, 180 degree position, 360 degree position, etc., the angle slightly deviated from the exact angular position indicated by the angle numbers due to the structure of the main body housing 16, the display housing 14, or the hinges 12L and 12R. Naturally, the position also occurs, and in this embodiment, the angular position including these shifted positions is referred to as a 0 degree position.

  As shown in FIGS. 1 to 3, the portable information device 10 includes a display housing 14 having a display 18 and a main body housing 16 having a keyboard 20. The pair of left and right hinges 12 </ b> L and 12 </ b> R (hereinafter collectively “ It is also connected so as to be rotatable from a 0 degree position to a 360 degree position.

  The display housing 14 is electrically connected to the main body housing 16 by a cable (not shown) that has passed through the hinge 12. The display 18 is configured by, for example, a touch panel type liquid crystal display device.

  The main body housing 16 is made of a resin formed in a flat box shape, and a hinge 12 is provided at the rear edge thereof. Various electronic components such as a substrate, an arithmetic unit, and a memory (not shown) are accommodated in the main body housing 16. Instead of the keyboard 20 and the touch pad 21, a display (not shown) may be provided on the surface 16a of the main body housing 16, and a software keyboard displaying the keyboard on the display may be used as an operation unit.

  An antenna 24 electrically connected to a wireless communication module (not shown) with a flexible cable is disposed inside the front side of the main body housing 16. The antenna 24 has a structure having directivity in all directions, and is, for example, an antenna for WWAN (wireless WAN). For this reason, when the portable information device 10 is in a usage form of a notebook PC, the antenna 24 has a radio wave law (for example, SAR) below a predetermined value between the antenna 24 and the back surface 16b of the main body housing 16 serving as the bottom surface. It is necessary to secure a sufficient distance to do. On the other hand, when the portable information device 10 is in a usage form of a tablet PC, it is necessary to secure a sufficient distance between the bottom surface 16a of the main body housing 16 and the SAR below a predetermined value. There is.

  Therefore, the portable information device 10 according to the present embodiment is equipped with a moving mechanism 26 (see FIGS. 4 and 5) that moves the antenna 24 in the vertical direction within the main body housing 16 according to the usage pattern. The main body casing 16 is thinned while satisfying the legal standards regarding the radio waves for the antenna 24.

  FIG. 4 is a side cross-sectional view schematically showing the internal structure of the main body housing 16 in the usage form of the notebook PC, and the arrangement of the antenna 24 in the main body housing 16 in the usage form of the notebook PC. Show. FIG. 5 is a side cross-sectional view schematically showing the internal structure of the main body casing 16 in the usage form of the tablet PC, and the arrangement of the antenna 24 in the main body casing 16 in the usage form of the tablet PC. Show. FIG. 6 is a plan view schematically showing the configuration of the moving mechanism 26.

  As shown in FIGS. 4 to 6, the moving mechanism 26 includes a rotating shaft member 28 having a pressing piece 27 that presses down the antenna 24, and a link member 30 that rotates the rotating shaft member 28 in conjunction with the rotating operation of the hinge 12 </ b> L. And an elastic member 32 that urges the antenna 24 in a direction opposite to the pressing direction of the pressing piece 27.

  The rotary shaft member 28 extends in the left-right direction from one side of the main housing 16 to the other side, and is provided along the rear side portion of the antenna 24. The rotary shaft member 28 is a hard wire (wire) formed of, for example, a SUS material, and has a sufficient rigidity, for example, having a diameter of about 1 mm. The rotating shaft member 28 has a drive end portion 28 a provided at one end portion thereof, and a linear base portion 28 b extending in the left-right direction along the rear side portion of the antenna 24.

  The drive end portion 28a is formed by bending the end portion of the base portion 28b by 90 degrees from the distal end of the arm portion 28c obtained by bending the end portion by 90 degrees, and protrudes in the left-right direction so as to be parallel to the base portion 28b. Thereby, the both ends of the rotating shaft member 28 are crank-shaped. The drive end portion 28a is engaged with the slit 30a of the link member 30 movable in the front-rear direction of the main body housing 16 in a rotatable state. The link member 30 constitutes a link mechanism 50 described later, and is a rod-like member that slides in the front-rear direction in conjunction with the rotation operation of the hinge 12L.

  The base portion 28b is positioned and supported so as to be rotatable by a bearing portion (not shown) provided in the main body housing 16 at an appropriate position in the left-right direction. Thus, when the link member 30 moves in the front-rear direction, the drive end portion 28a moves in the front-rear direction together with the link member 30 while rotating in the slit 30a of the link member 30, and as a result, is pivotally supported by the bearing portion. The base portion 28b rotates around the axis while the arm portion 28c swings in a pendulum shape in the front-rear direction around the base portion 28b (see FIGS. 4 and 5).

  The pressing piece 27 is bent from a cylindrical body (not shown) that is externally fixed to the outer peripheral surface of the base portion 28b of the rotating shaft member 28, and thus protrudes from the outer peripheral surface of the base portion 28b to the antenna 24 side. Is. Since the pressing piece 27 is fixed to the base portion 28b, the pressing piece 27 swings when the base portion 28b rotates. The tip of the pressing piece 27 is disposed in contact with the upper surface of a resin base member 34 that supports the antenna 24, and the base member 34, that is, the antenna 24 can be pressed downward. The base member 34 may not be provided, and the antenna 24 may be pressed directly by the pressing piece 27.

  The elastic member 32 supports the antenna 24 while elastically biasing the antenna 24 upward via the base member 34. The elastic member 32 is constituted by, for example, a coil spring. A guide member (not shown) for guiding the vertical movement of the antenna 24 (and the base member 34) supported by the elastic member 32 so as to be movable up and down may be provided.

  In such a moving mechanism 26, when the portable information device 10 is in the usage form of a notebook PC, the link member 30 is in the forward position as shown in FIG. 4, and the base portion 28b of the rotating shaft member 28 is shown in the drawing. It is in a state rotated in the clockwise direction. For this reason, the pressing force of the antenna 24 by the pressing piece 27 is released. Therefore, the antenna 24 is disposed at the first position (note position) raised in the main body housing 16 by the urging force of the elastic member 32.

  When the portable information device 10 is deformed to use the tablet PC with the antenna 24 in the first position, the link member 30 moves rearward as shown in FIG. As a result, the drive end portion 28a moves rearward, so that the base portion 28b rotates around the axis in the counterclockwise direction in the drawing. As a result, the pressing piece 27 swings downward, and the antenna 24 is forcibly pushed down against the urging force of the elastic member 32 and lowered to be arranged at the second position (tablet position).

  On the other hand, when the portable information device 10 is deformed again to use the notebook PC with the antenna 24 in the second position, the link member 30 moves forward as shown in FIG. Accordingly, the drive end portion 28a moves forward, so that the base portion 28b rotates around the axis in the clockwise direction in the drawing. As a result, the pressing piece 27 swings upward, and the antenna 24 is raised by the urging force of the elastic member 32 and returns to the first position again.

  In the portable information device 10 according to the present embodiment, such an operation of the moving mechanism 26 is configured to be interlocked with the rotation operation of the hinge 12L by the opening / closing position of the display housing 14. Therefore, a configuration example of the hinge 12L that links the rotation operation of the display housing 14 and the movement mechanism 26 and a configuration example of the link mechanism 50 that links the hinge 12L and the movement mechanism 26 will be described.

  First, a configuration example of the hinge 12L will be described.

  FIG. 7 is a plan view schematically showing a configuration example of the hinge 12L. In the present embodiment, since the antenna 24 is arranged on the left side of the main housing 16, the one hinge 12 </ b> L and the moving mechanism 26 are interlocked. However, the moving mechanism 26 has the right hinge 12 </ b> R or both hinges 12 </ b> L. , 12R may be used.

  As shown in FIG. 7, the hinge 12L includes a first shaft (first axis) 40 extending in the left-right direction, a second shaft (second axis) 41 installed in parallel with the first shaft 40, A box-like hinge housing 42 that rotatably supports and stores the first shaft 40 and the second shaft 41 is also provided (see also FIGS. 2 and 3).

  The first shaft 40 is rotated integrally with the display casing 14 by fitting and fixing one end of the first shaft 40 into a fitting hole (not shown) provided in the display casing 14. The second shaft 41 is rotated integrally with the main body casing 16 by being fitted and fixed at a fitting hole (not shown) provided at one end of the second shaft 41. Most of the first shaft 40 and the second shaft 41 are housed inside the hinge housing 42 in a rotatable state. For example, the first shaft 40 and the second shaft 41 are configured such that only the first shaft 40 rotates from the 0-degree position to the 180-degree position, and only the second shaft 41 rotates from the 180-degree position to the 360-degree position. Has been. Of course, the rotation of the first shaft 40 and the second shaft 41 may be selected at other rotational angle positions. For example, the first shaft 40 and the second shaft 41 rotate synchronously by a gear train (not shown). It may be a configuration.

  The hinge housing 42 is provided with a concave portion 42a into which a convex portion provided at the rear edge of the main body housing 16 enters, and a spiral pin 44 projects from one side surface of the concave portion 42a. Yes. The spiral pin 44 is provided coaxially with the second shaft 41 on the main body casing 16 side, and rotates coaxially with the second shaft 41 in conjunction with the rotation operation of the hinge casing 42. On the outer peripheral surface of the spiral pin 44, a rail groove 46 having a shape shown in the developed view shown in FIG. 8 is formed in a spiral shape.

  The rail groove 46 is formed so as to draw a spiral along the axial direction on the outer peripheral surface of the spiral pin 44 and is a groove extending from the left side to the right side of the spiral pin 44. An engagement piece 52a of a hinge link 52 that constitutes a link mechanism 50 described later is slidably engaged with the rail groove 46.

  Since the second shaft 41 rotates while the display housing 14 is rotated from the 180 degree position to the 360 degree position, the spiral pin 44 is rotated in accordance with this rotation. Moving. On the other hand, since the second shaft 41 does not rotate while the display housing 14 rotates from the 0 degree position to the 180 degree position, the spiral pin 44 also does not rotate, so that the engagement piece 52a becomes the starting point of the rail groove 46. Stay at one end. For example, when the first shaft 40 and the second shaft 41 are configured to rotate synchronously, a groove (blank groove) along the circumferential direction of the spiral pin 44 is provided at one end which is the starting point of the rail groove 46, and 0 ° What is necessary is just to comprise so that the engagement piece 52a may move through the groove | channel along this circumferential direction between a 180 degree position from a position.

  Next, a configuration example of the link mechanism 50 will be described.

  FIG. 9 is a plan view schematically showing the state of the link mechanism 50 between the 0 degree position and the 180 degree position, and FIG. 10 is a plan view schematically showing the state of the link mechanism 50 at the 360 degree position. FIG.

  As shown in FIGS. 9 and 10, the link mechanism 50 operates inside the main body housing 16, and includes a hinge link 52 supported on the inner surface of the main body housing 16 so as to be movable in the left-right direction, A swinging member 56 that is supported so as to be rotatable about the rotation shaft 54 on one end side with respect to the inner surface of the housing 16, and the other end side of the swinging member 56 opposite to the rotation shaft 54. The link member 30 is rotatably connected via the action pin 58. The hinge link 52, the swinging member 56, and the link member 30 constituting the link mechanism 50 are supported so as to be movable with respect to the inner surface of the housing cover constituting the surface 16a of the main body housing 16, for example.

  The hinge link 52 is an L-shaped plate having an engagement piece 52 a that protrudes rearward and engages with the rail groove 46 of the spiral pin 44. When the display housing 14 is rotated and the spiral pin 44 rotates, the hinge link 52 slides in the left-right direction as the engaging piece 52a slides on the rail groove 46 (see FIGS. 9 and 10).

  The swing member 56 is a substantially triangular plate having a curved shape that swells toward one end on the hinge link 52 side where the rotation shaft 54 is provided. The swing member 56 is connected to the hinge link 52 at a position on the rear side of the rotation shaft 54 so as to be rotatable with respect to each other by a connection pin 62. The other end side of the swing member 56 opposite to the rotation shaft 54 is rotatably connected to the link member 30 by an action pin 58.

  The link member 30 is a long rectangular bar-like member provided so as to be slidable in the front-rear direction with respect to the main body housing 16 by a guide structure (not shown). The link member 30 has a working pin 58 projecting from the rear end thereof, and the working pin 58 is rotatably connected to the swing member 56.

  In such a link mechanism 50, when the hinge link 52 slides in the left-right direction in response to the rotation of the spiral pin 44, the connecting pin 62 serves as a power point, and the rotation shaft 54 serves as a rotation fulcrum. , And the link pin 30 moves in the front-rear direction with the action pin 58 acting as an action point.

  Next, the relationship between the rotation operation of the display housing 14 interlocked by the link mechanism 50 and the operations of the moving mechanism 26 and the antenna 24 will be described.

  First, when the display housing 14 is between the 0-degree position and the 180-degree position, the second shaft 41 does not rotate, so the spiral pin 44 does not rotate, and is swung by the hinge link 52 at the initial position as shown in FIG. The moving member 56 is in the position rotated most counterclockwise in the drawing, and the action pin 58 is in the most forward position. For this reason, the link member 30 is also in the position moved most forward.

  Thereby, in the state where the portable information device 10 is in the usage form of the notebook PC (for example, 90 ° position to 150 ° position), the antenna 24 is moved by the urging force of the elastic member 32 as shown in FIG. It arrange | positions in the 1st position raised within. In the first position, the antenna 24 is located closer to the front surface 16 a than the back surface 16 b of the main body housing 16. As a result, it is possible to secure a sufficient distance L between the back surface 16b which is the bottom surface of the portable information device 10 and the law regarding radio waves below a predetermined value in the usage form of the notebook PC.

  Next, when the display housing 14 is rotated in the opening direction beyond the 180 ° position, the hinge housing 42 of the hinge 12L is also rotated, and the spiral pin 44 is rotated. In the meantime, the engaging piece 52a of the hinge link 52 slides on the rail groove 46 (see FIG. 9). As a result, the rotation of the spiral pin 44 from the 180 degree position to the 360 degree position causes the hinge link 52 to be pushed out in the advancing direction (right side in FIG. 10) as shown in FIG. 56 is rotated clockwise. At the 360-degree position, the link member 30 moves forward most via the action pin 58.

  Thereby, in the state where the portable information device 10 is in the usage state (360-degree position) of the tablet PC, the antenna 24 is pressed by the pressing piece 27 of the moving mechanism 26 as shown in FIG. It is arranged at the second position lowered. In this second position, the antenna 24 is located closer to the back surface 16b than to the front surface 16a of the main body casing 16. As a result, a sufficient distance L can be ensured between the tablet PC and the surface 16a that is the bottom surface of the portable information device 10 so that the laws relating to radio waves are not more than a predetermined value.

  On the other hand, when the display housing 14 at the 360 degree position is rotated in the closing direction, an operation in the direction opposite to the rotation in the opening direction occurs. That is, as the display housing 14 is rotated from the 360 degree position to the 180 degree position, the link member 30 moves forward and the pressing action of the pressing piece 27 on the antenna 24 is gradually released. As a result, the antenna 24 returns to the first position by the biasing force of the elastic member 32 at the 180 degree position.

  As described above, in the portable information device 10 according to the present embodiment, the main body housing 16 having the operation means (for example, the keyboard 20) on the surface 16a and the display housing 14 having the display 18 on the surface 14a are hinged 12L. , 12R so that the main body casing 16 and the front surfaces 14a of the display casing 14 face each other from the 0 degree position where the main casing 16 and the back faces 14b of the display casing 14 face each other. In the configuration that can be rotated to a position of 360 degrees, the antenna 24 disposed inside the main body housing 16 operates in conjunction with the rotation operation of the display housing 14 with respect to the main body housing 16, and the antenna 24 is operated. A first position closer to the front surface 16a than the back surface 16b of the main body housing 16 and a second position closer to the back surface 16b than the front surface 16a of the main body housing 16 And a moving mechanism 26 for moving the and.

  Therefore, even if the portable information device 10 is a convertible PC having a configuration in which the bottom surface of the device is different between the usage pattern of the notebook PC and the usage pattern of the tablet PC, the position corresponding to the usage pattern is determined by the moving mechanism 26. The antenna 24 moves to the position. As a result, even if two antennas corresponding to each usage pattern are not mounted, a sufficient distance L is secured between the bottom surface of each usage pattern and the antenna 24 so that the laws relating to radio waves are not more than a predetermined value. Can meet the standards of laws and regulations related to radio waves at low cost. In addition, by moving the antenna 24 within the main body housing 16, it is possible to secure a distance between the bottom surface and the antenna 24 in each usage pattern. For this reason, the distance between the antenna 24 and the bottom surface can be secured while preventing the casing from becoming thicker and reducing the thickness. Further, for example, in the case of one usage pattern, it is not necessary to reduce the transmission power from the antenna 24, and a predetermined transmission power can always be supplied to the antenna 24, so that the transmission quality does not deteriorate.

  In the portable information device 10, the moving mechanism 26 moves the antenna 24 in conjunction with the rotation operation of the hinge 12 </ b> L when the display housing 14 is opened and closed with respect to the main body housing 16. For this reason, the change of the usage pattern and the position of the antenna 24 can be linked with a simple configuration without using a means for detecting the usage pattern.

  Since the portable information device 10 is a convertible PC, the moving mechanism 26 has an antenna 24 in a predetermined angle range between at least the 0 degree position and the 180 degree position (in the present embodiment, the 0 degree position to the 180 degree position). Is arranged at the first position, and the antenna 24 is arranged at the second position at a position of at least 360 degrees. As a result, the antenna 24 can be automatically arranged at an optimum position for each of the usage pattern in the notebook PC and the usage pattern in the tablet PC. Of course, the angular position at which the antenna 24 is arranged at the first position or the second position by the moving mechanism 26 can be changed as appropriate according to the specifications of the portable information device to be mounted.

  The moving mechanism 26 includes a rotating shaft member 28 having a pressing piece 27 for pressing the antenna 24, a link member 30 for rotating the rotating shaft member 28 in conjunction with the rotation operation of the hinge 12L, and pressing the antenna 24 by the pressing piece 27. And an elastic member 32 biasing in the direction opposite to the direction. Thereby, arrangement | positioning of the antenna 24 can be controlled with a simple structure using a mechanical element.

  Of course, the moving mechanism 26 and the link mechanism 50 may have other configurations. For example, an electric motor that detects whether the portable information device 10 is in a usage state of a notebook PC or a usage state of a tablet PC, or operates in accordance with the rotation angle of the hinge 12L, is mounted. The antenna 24 may be moved between the first position and the second position by using the power of.

  It should be noted that the present invention is not limited to the above-described embodiment, and it is needless to say that the present invention can be freely changed without departing from the gist of the present invention.

  In the above-described embodiment, the antenna 24 is pressed by the pressing piece 27 of the rotating shaft member 28. However, for example, the key top of the keyboard 20 or a surrounding frame (such as a cosmetic frame or the like) is pressed by the pressing piece 27 of the rotating shaft member 28. The bezel frame) may be moved up and down depending on how the portable information device 10 is used, and the vertical movement of the antenna 24 may be linked to the vertical movement.

DESCRIPTION OF SYMBOLS 10 Portable information apparatus 12L, 12R Hinge 14 Display housing | casing 14a, 16a Front surface 14b, 16b Back surface 16 Main body housing | casing 18 Display 20 Keyboard 24 Antenna 26 Moving mechanism 27 Push piece 28 Rotating shaft member 30 Link member 32 Elastic member 34 Base member 50 Link mechanism

Claims (4)

A main body housing having an operating means on the surface and a display housing having a display on the surface are rotatably connected by a hinge, and the surface of the main body housing and the surface of the display housing face each other from a 0 degree position. A portable information device capable of rotating to a 360 degree position where the back surface of the main body housing and the display housing face each other,
An antenna disposed inside the main body housing;
It operates in conjunction with the rotation of the display housing relative to the main body housing, and the antenna is located closer to the front surface than the back surface of the main body housing, and to the back surface from the front surface of the main body housing. A moving mechanism for moving to the adjacent second position;
A portable information device comprising: The portable information device according to claim 1,
The portable information device characterized in that the moving mechanism moves the antenna in conjunction with a rotation operation of the hinge when the display housing is opened and closed with respect to the main body housing. The portable information device according to claim 2,
The moving mechanism arranges the antenna at the first position at least in a predetermined angle range from the 0 degree position to the 180 degree position, and arranges the antenna at the second position at least in the 360 degree position. A portable information device characterized by The portable information device according to claim 2 or 3,
The moving mechanism includes a rotating shaft member having a pressing piece for pressing the antenna, a link member for rotating the rotating shaft member in conjunction with a rotation operation of the hinge, and a pressing direction of the antenna by the pressing piece. A portable information device comprising an elastic member biased in the reverse direction.

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