JP4819773B2 - Portable device - Google Patents

Description

  The present invention relates to a portable device having an antenna.

  2. Description of the Related Art Conventionally, a mobile phone as a mobile device has a function of switching a screen display mode, key assignment, and the like depending on an open / close state. In order to open and close the cellular phone, a method is used in which a switch is arranged in one housing and a protrusion is formed at a position corresponding to the switch in the closed state in the other housing to detect the open / closed state. However, in this case, there are problems that the positions where the protrusions and switches are formed are limited, and thus the degree of freedom in design is low, and that the mounting space for other components is reduced due to the protrusions and switches.

On the other hand, a first housing in which the magnet is disposed, a second housing in which the reed switch and the antenna are disposed, a hinge portion that connects the first housing and the second housing so as to be openable and closable, There has been proposed a portable device including an open / close state detection unit that detects an open / close state of the first housing and the second housing according to the detection result of the reed switch (for example, Patent Document 1). reference).
JP 2001-136248 A

  However, since the portable device of Patent Document 1 has a magnet disposed in the first housing in order to perform opening / closing detection, the number of parts may increase.

  An object of this invention is to provide the portable apparatus which can suppress the increase in a number of parts.

  The present invention includes a first housing in which an antenna in which a magnetic part is formed is disposed, a second housing in which a magnetic sensor for detecting the strength of magnetic lines of force is disposed, the first housing, and the second housing. A first hinge portion that connects the first housing and the second housing, and an open / closed state of the first housing and the second housing is detected based on a strength of a magnetic force line radiated from the magnetic portion detected by the magnetic sensor. The present invention relates to a portable device including a state detection unit.

  Moreover, it is preferable that the magnetic part is formed with a convex portion that protrudes toward the second housing when the first housing and the second housing are in a closed state.

  Further, it is preferable that a second antenna for magnetic field communication is disposed in the first casing.

  Further, the first casing and the second casing can be changed by the first hinge portion so that a distance between the convex portion and the magnetic sensor can be changed when the first casing and the second casing are in a closed state. It is preferable to include a second hinge portion that couples the housing.

  The antenna is disposed at an end of the first casing opposite to the first hinge, and the magnetic sensor is disposed at an end of the second casing opposite to the first hinge. Preferably they are arranged.

  According to the present invention, an open / closed state can be detected, and a first housing in which an antenna having a magnetic part is disposed is disposed, and a second housing in which a magnetic sensor for detecting the strength of magnetic field lines is disposed. It is possible to provide a portable device that can suppress an increase in the number of components.

The best mode for carrying out the present invention will be described below with reference to the drawings.
An embodiment of the present invention will be described with reference to FIGS.
First, the basic structure of the mobile phone 1 as a mobile device will be described with reference to FIGS. FIG. 1 shows a front view of the mobile phone 1 in the opened state (first open state). 2A shows a left side view when the mobile phone 1 is opened, and FIG. 2B shows a right side view when the mobile phone 1 is opened. FIG. 3 shows a rear view in a state where the mobile phone 1 is opened.

  The mobile phone 1 includes an operation unit side body 2 and a display unit side body 3. The operation unit side body 2 and the display unit side body 3 are connected via a connecting part 4 (first hinge part, second hinge part) having a biaxial hinge mechanism, and the mobile phone 1 is opened and closed. The display unit side body 3 can be switched between the front state and the back state in each of the open state and the closed state.

  Here, the closed state is a state in which both housings are arranged so as to overlap each other, and the open state is a state in which both housings are arranged so as not to overlap each other. The front state (first open state) in the open state refers to the display 30 disposed on the surface 3A of the display unit side body 3 to be described later and the operation keys disposed on the surface 2A of the operation unit side body 2. The group 11 is arranged so as to face the same side (see FIG. 1), and the back state in the open state (second open state) is the display 30 and the operation unit side housing in the display unit side body 3. The state (refer FIG. 7) arrange | positioned so that the operation key group 11 in the body 2 may face the other side. Further, the front state in the closed state (first closed state) is a state in which the display 30 in the display unit side body 3 is arranged to face the operation key group 11 in the operation unit side body 2 (see FIG. 5). The back state in the closed state (second closed state) is a state in which the display 30 in the display unit side body 3 is exposed without facing the operation key group 11 in the operation unit side body 2 (FIG. 8).

  The outer surface of the operation unit side body 2 includes a front case 2a and a rear case 2b. The operation unit side body 2 exposes, on the front case 2a side, an operation key group 11 and a voice input unit 12 as a microphone to which a voice uttered by a user of the mobile phone 1 is input. Configured. Here, the operation key group 11 includes a function setting operation key 13 for operating various functions such as various settings, a telephone book function, and a mail function, and a numeric keypad for inputting numbers such as telephone numbers and characters such as mail. Input operation keys 14 and the like, and a determination operation key 15 for performing determinations in various operations, scrolling in the vertical and horizontal directions, and the like. The voice input unit 12 is disposed on the outer end side opposite to the connection unit 4 side in the longitudinal direction of the operation unit side body 2. That is, the voice input unit 12 is arranged on one outer end side when the mobile phone 1 is in the open state.

  Each key constituting the operation key group 11 is predetermined according to a deformed state such as an open / close state or a front / back state of the operation unit side body 2 and the display unit side body 3 and the type of application being activated. Function is assigned (key assignment). In the mobile phone 1, when each key constituting the operation key group 11 is pressed by the user, an operation corresponding to the function assigned to each key is executed.

  As shown in FIG. 2A, on one side surface of the operation unit side body 2, an interface 16 for transmitting / receiving data to / from an external device (for example, a host device), a headphone / microphone terminal 17, A removable external memory interface 18 and a charging terminal 19 for charging the battery are provided. The interface 16, the headphone terminal / microphone terminal 17, and the interface 18 are covered with a dust-proof cap that can be attached and detached when not in use.

  On the other side of the operation unit side body 2, as shown in FIG. 2B, a pair of side keys 20, an operation key 21 used at the time of imaging, and a broadcast wave whose radio wave reception angle can be adjusted. A receiving antenna 22 is arranged. A predetermined function is assigned to the side key 20 in accordance with a deformed state such as an open / close state and a front / back state of the operation unit side body 2 and the display unit side body 3 and the type of the activated application ( Key assignment). Here, similarly to the above, when the side key 20 is pressed by the user, an operation corresponding to the function assigned to the side key 20 in the mobile phone 1 is executed.

  As shown in FIG. 3, a camera unit 23 that captures an image of a subject and a light unit 24 that irradiates the subject with light are disposed in the rear case 2 b of the operation unit side body 2. The camera unit 23 and the light unit 24 are arranged on the inner end side on the connection unit 4 side in the operation unit side body 2. Further, the rear case 2b in the operation unit side body 2 is formed with an opening 92a for mounting the battery 90 in the battery housing portion 92, and the battery lid 25 is disposed so as to close the opening 92a.

  Moreover, the upper end part of the operation part side housing | casing 2 and the lower end part of the display part side housing | casing 3 are connected via the connection part 4 provided with a biaxial hinge mechanism, as shown in FIGS. As shown in FIG. 3, the sub operation key group 33 is arranged in a line in the width direction (short direction) of the mobile phone 1 on one surface (back surface) of the connecting portion 4. Each of the keys constituting the sub operation key group 33 depends on a deformed state such as an open / closed state or a front / back state of the operation unit side body 2 and the display unit side body 3 and the type of application being activated. A predetermined function is assigned (key assignment). In the mobile phone 1, when each key constituting the operation key group 11 is pressed by the user, an operation corresponding to the function assigned to each key is executed.

  The outer surface of the display unit side body 3 includes a front case 3a and a rear case 3b. The front case 3a in the display unit side body 3 is arranged so as to expose a display 30 having a predetermined shape for displaying various types of information and a sound output unit 31 as a speaker for outputting sound on the other side of the call. Is done. Here, the audio output unit 31 is disposed on the outer end side opposite to the connection unit 4 in the longitudinal direction of the display unit side body 3. That is, the audio output unit 31 is arranged on the other end side when the mobile phone 1 is in the open state. The audio output unit 31 includes a magnet that generates a predetermined magnetic force.

  In addition, a sub display 32 for displaying various types of information is exposed in the rear case 3 b of the display unit side body 3. Each of the display 30 and the sub-display 32 includes a liquid crystal panel, a drive circuit that drives the liquid crystal panel, and a light source unit such as a backlight that emits light from the back side of the liquid crystal panel.

  Here, the mobile phone 1 includes state detection means for detecting the open / closed state and the front / back state of the mobile phone 1 in the closed state. The state detection means includes a magnetic unit 7 formed in the antenna unit 80 disposed in the operation unit side housing 2 as the first housing, and a magnetic unit disposed in the display unit side housing 3 as the second housing. It comprises a hall element 6 as a sensor. The Hall element 6 detects the strength of magnetic field lines (magnitude of magnetic force). Specifically, the Hall element 6 detects the strength of the magnetic field lines radiated from the magnetic part 7 formed in the antenna part 80.

  The Hall element 6 and the magnetic part 7 are arranged so as to be separated from each other in the open state, and so that the Hall element 6 and the magnetic part 7 overlap in the thickness direction of the casing in the first closed state. The Hall element 6 detects the open / closed state and the closed / closed state of the mobile phone 1 based on the strength of the magnetic lines of force radiated from the magnetic unit 7 (magnitude of magnetic force).

  Next, the structure of the connecting portion 4 and the deformed state of the mobile phone 1 will be described with reference to FIGS. FIG. 4 is a perspective view of the cellular phone 1 in the opened state (first opened state). FIG. 5 is a plan view of a state (first closed state) in which the display unit side body 3 and the operation unit side body 2 of the mobile phone 1 are closed and rotated around the opening / closing axis X of the connecting unit 4. Show. FIG. 6 is a perspective view showing a state where the display unit side body 3 of the mobile phone 1 is rotated by a predetermined angle about the rotation axis Y of the connecting unit 4. FIG. 7 is a perspective view of the state in which the display unit side body 3 of the mobile phone 1 is rotated by 180 ° about the rotation axis Y of the connecting unit 4 (turned state, second open state). FIG. 8 shows a perspective view of the state in which the display unit side body 3 of the mobile phone 1 is closed and rotated around the opening / closing axis X of the connecting unit 4 (turn closed state, second closed state).

  The connection unit 4 connects the operation unit side body 2 and the display unit side body 3 so that the operation unit side body 2 and the display unit side body 3 can be opened and closed at an arbitrary angle around the opening / closing axis X, and at an arbitrary angle around the rotation axis Y. A biaxial hinge mechanism that is pivotably connected is provided.

  The connecting portion 4 is connected to the upper end portion of the operation unit side body 2 by an open / close connecting member (not shown) on one end 4a side, and is connected to the upper end portion of the display unit side case 3 by a rotating connecting member (not shown) on the other end 4b side. It is connected to the lower end.

  A convex opening / closing part 4 c is formed at one end 4 a of the connecting part 4 so as to protrude vertically from the surface of the connecting part 4. A concave cutout portion 5 into which the convex opening / closing portion 4c is inserted is formed at the upper end portion of the operation unit side body 2.

  A hole A (not shown) is formed on each side of the opening / closing portion 4c in the opening / closing axis X direction. Moreover, a hole B (not shown) is formed on both inner side surfaces of the notch portion 5 of the operation unit side body 2. Then, in a state where the convex opening / closing part 4c is inserted into the concave cutout part 5, the hole A and the hole B are disposed so as to face each other in close proximity, and the hole A A cylindrical opening / closing connecting member is inserted through both of the holes B. Thereby, the operation unit side body 2 and the display unit side body 3 are connected so as to be openable and closable. The opening / closing part 4c is not particularly limited to a convex shape as long as the opening / closing part 4c is inserted into the upper end part of the operation unit side body 2, and the shape of the upper end part of the operation unit side body 2 is also concave. Not limited to.

  Moreover, the other end 4b side of the connection part 4 and the lower end part of the display part side housing | casing 3 are rotatably connected by the rotation connection member which is not shown in figure. A hole C (not shown) is formed on the side surface of the connecting unit 4 on the display unit side body 3 side. A hole D (not shown) is formed on the side surface of the display unit side body 3 on the connection unit 4 side. Then, the rotation connecting member is inserted into both the hole C and the hole D, so that the operation unit side body 2 and the display unit side body 3 can rotate about the rotation axis Y. Connected. That is, the operation unit side body 2 and the display unit side body 3 are connected so that the front and back states of the display unit side body 3 can be switched.

  As described above, in the mobile phone 1, the operation unit side body 2 and the display unit side body 3 are connected by the connection unit 4 so as to be opened and closed and rotated. As a result, the mobile phone 1 is opened or closed by opening and closing the operation unit side body 2 and the display unit side body 3 about the opening / closing axis X, or rotating about the rotation axis Y. It can be transformed into various states.

  For example, the mobile phone 1 in the closed state (first closed state) in which the operation unit side body 2 and the display unit side body 3 overlap each other as illustrated in FIG. The end of the casing 3 opposite to the opening / closing axis X is deformed so as to open around the opening / closing axis X so as to be separated from each other, thereby displaying the operation unit-side casing 2 and the display shown in FIGS. It can be made into the open state (1st open state) where the part side housing | casing 3 does not mutually overlap.

  Conversely, the mobile phone 1 in the open state (first open state) shown in FIGS. 1 to 4 has an end portion on the opposite side to the opening / closing axis X of the operation unit side body 2 and the display unit side body 3. It can be set to the closed state (first closed state) shown in FIG. 5 by deforming it so that it closes around the opening / closing axis X so as to approach each other.

  Further, in the open state (first open state) shown in FIGS. 1 to 4, the display unit side body 3 can be rotated around the rotation axis Y as shown in FIG. 6. Furthermore, the front and back states of the display unit side body 3 can be switched by further rotating the display unit side body 3 from the state of FIG. Specifically, the display 30 disposed on the surface 3A of the display unit side body 3 shown in FIGS. 1 to 4 and the operation key group 11 disposed on the surface 2A of the operation unit side body 2 are on the same side. The display unit side body 3 is rotated by 180 degrees about the rotation axis Y from the open state (first open state) facing the screen, so that the surface of the display unit side body 3 as shown in FIG. The display 30 arranged in 3A and the operation key group arranged on the surface 2A of the operation unit side body 2 can be in an open state (second open state) in which they face the opposite side.

  Then, by deforming the display unit side body 3 in the state shown in FIG. 7 (second open state) so as to close around the opening / closing axis X, the mobile phone 1 is closed (second closed state) shown in FIG. ). In other words, the mobile phone 1 is in a closed state (first closed state) in which the display 30 in the display unit side body 3 shown in FIG. 5 is arranged to face the operation key group 11 in the operation unit side body 2. The display 30 in the display unit side body 3 shown in FIG. 8 can be transformed into a closed state (second closed state, turn-closed state) that is exposed without facing the operation unit side body 2. .

  Next, the internal structure of the operation unit side body 2 and the display unit side body 3 will be described with reference to FIGS. 9 to 12. FIG. 9 is an exploded perspective view of the operation unit side body 2. FIG. 10 is an exploded perspective view of the display unit side body 3. FIG. 11 is a diagram illustrating the structure of the antenna element 82. FIG. 12 is a diagram for explaining the arrangement of the magnetic part 7, the Hall element 6, and the magnetic field antenna part 85.

  As shown in FIG. 9, the operation unit side body 2 includes a front case 2a, a key sheet 40 that constitutes the operation key group 11 described above, a flexible printed wiring board 50 on which key switches are arranged, and a shield case 60. A circuit board 70 including various electronic components such as a reference potential pattern layer and an RF (Radio Frequency) module for a cellular phone, an antenna unit 80, a magnetic field antenna unit 85, and a rear case 2b. The battery 90 is accommodated so as to be removable from the outside of the rear case 2b.

  The front case 2a and the rear case 2b are arranged so that their concave inner surfaces face each other, and are joined so that their outer peripheral edges overlap. Between the front case 2a and the rear case 2b, the key sheet 40, the flexible printed wiring board 50, the shield case 60, the circuit board 70, and the antenna unit 80 are arranged in this order from the front case 2a side. It is stored and arranged.

  Various electronic components and a reference potential pattern layer (not shown) are formed on the first surface 72 of the circuit board 70. Various electronic components are arranged on the second surface 73 of the circuit board 70. Specifically, on the second surface 73, a camera unit 23 and a light unit 24 (not shown) are arranged so as to be biased toward an end portion on the connection unit 4 side, and an audio input unit 12 (not shown) is provided on the connection unit 4 side. Arranged at the end. The camera unit 23 and the light unit 24 are exposed to the outside through a perforated part 2c that is perforated in a predetermined shape in the rear case 2b.

  The shield case 60 is a metal member having a shape in which one wide surface of a thin rectangular parallelepiped is opened. The shield case 60 includes a flat plate portion 42 and ribs 44 formed substantially perpendicular to one surface of the flat plate portion 42. The rib 44 is formed to be equal to or sufficiently higher than the height of the electronic component having the highest height among the various electronic components mounted on the first surface 72 of the circuit board 70. The shield case 60 may be formed of a skeleton made of resin and a metallic conductor film formed on the surface thereof, in addition to being formed of metal.

  Here, the ribs 44 are formed on the periphery and inside of the flat plate portion 42 so as to correspond to the above-described reference potential pattern layer. Specifically, when the first surface 72 on which the reference potential pattern layer is formed and the back surface on which the rib 44 is formed in the shield case 60 are arranged to face each other, the bottom surface of the rib 44 is arranged. Are arranged on the reference potential pattern layer.

  The shield case 60 is electrically connected to the reference potential pattern layer formed on the first surface 72 of the circuit board 70 by the rib 44 (bottom surface). As a result, the shield case 60 is electrically connected to the reference potential pattern layer and has the same potential. Further, the shield case 60 prevents external noise from acting on various electronic components (not shown) disposed on the first surface 72 of the circuit board 70, and the high-frequency circuit formed on the first surface 72. Absorbs noise emitted from etc. Here, electrical conduction may be achieved by disposing a conductive member (not shown) disposed between the shield case 60 and the circuit board 70. The shield case 60 also functions as a reinforcing member for securing rigidity against pressing operations of various keys described later.

  The flexible printed wiring board 50 has a plurality of key switches 51, 52, 53 on the surface on the front case 2a side. The key switches 51, 52, 53 of the flexible printed wiring board 50 have a structure having a metal dome of a metal plate that is curved in a bowl shape and is three-dimensionally formed. When the apex of the bowl-shaped shape is pressed, the metal dome comes into contact with a switch terminal formed in an electric circuit (not shown) printed on the surface of the flexible printed wiring board 50 and is electrically connected. Note that the flexible printed wiring board 50 is obtained by sandwiching wiring between a plurality of insulating films.

  The key sheet 40 is configured by attaching the operation key group 11 to the surface of a silicon rubber sheet 41 with an adhesive. The function setting operation key 13, the input operation key 14, and the determination operation key 15 constituting the operation key group 11 in the key sheet 40 are disposed at positions facing the key switches 51, 52, 53 on the flexible printed circuit board 50. These are disposed so as to be exposed from a key hole 45 formed in the front case 2a described later.

  A plurality of key holes 45 are formed on the inner surface of the front case 2a facing the display 30 of the display unit side body 3 in a state in which the cellular phone 1 is folded. From each of the plurality of key holes 45, the pressing surfaces of the function setting operation key 13, the input operation key 14, and the determination operation key 15 formed on the key sheet 40 are exposed. By pressing the function setting operation key 13, the input operation key 14, and the determination operation key 15 constituting the exposed operation key group 11 so as to press down, the metal dome in each of the corresponding key switches 51, 52, 53 is provided. The apex of (saddle-like shape) is pressed and comes into electrical contact with the switch terminal.

  The antenna unit 80 includes a base 81 and an antenna element 82. The antenna unit 80 is configured by arranging an antenna element 82 having a predetermined shape on a base 81. The antenna unit 80 is disposed on the end side opposite to the connection unit 4 side in the mobile phone 1. The antenna element 82 is fed from the circuit board 70 via the feed terminal 101. Specifically, the antenna element 82 is fed from the circuit board 70 via the feed terminal 101 and is connected to the RF module and the like of the circuit board 70.

The antenna element 82 is made of sheet metal. In addition, as shown in FIG. 11, the antenna element 82 has a magnetic part 7.
The magnetic part 7 is formed on the entire surface of the antenna element 82. In other words, the antenna element 82 is entirely magnetized. Here, the magnetic part 7 may be formed not only in the whole antenna element 82 but only in a predetermined region including a region where a convex part 7a described later is formed.

  The magnetic part 7 radiates magnetic field lines having a predetermined strength. A Hall element 6 as a magnetic sensor, which will be described later, detects the strength of the lines of magnetic force radiated from the magnetic unit 7. The open / close state and the front / back state of the mobile phone 1 are detected based on the strength of the magnetic lines of force detected by the Hall element 6.

  A convex portion 7 a is formed on the magnetic portion 7. The convex portion 7a is formed so as to protrude toward the operation unit side body 2 when the cellular phone 1 is in the closed state. The shape of the convex portion 7a is not particularly limited. For example, the tip may be an acute angle or flat.

  The convex portion 7a is disposed at an end portion on the opposite side to the connecting portion 4 in the longitudinal direction of the operation unit side body 2, and is disposed so as to be biased to one side in the width direction. Specifically, the convex portion 7a is formed so as to be biased toward the side opposite to the side where the power supply terminal 101 is formed in the width direction.

  As shown in FIGS. 11 and 12, the magnetic lines of force radiated from the convex portion 7a are radiated so as to converge in one direction. Specifically, the magnetic lines of force are radiated so as to connect the side surfaces of the convex part 7a, thereby collecting the magnetic field lines in the space on the tip side of the convex part 7a. By forming the convex portion 7a on the magnetic portion 7, the density of magnetic lines of force in the space on the tip end side of the convex portion 7a is increased, and the density of magnetic lines of force in the surrounding space of the convex portion 7a is decreased.

  The convex portion 7a is formed at a position facing the hall element 6 in the first closed state. The convex portion 7a is arranged so that the tip of the convex portion 7a faces the Hall element 6 in the first closed state. Thereby, in the first closed state, the Hall element 6 can be arranged in a space on the tip end side of the convex portion 7a and having a high density of magnetic lines of force.

  The convex portion 7 a is formed in the low current region 82 b in the antenna element 82. Specifically, the convex portion 7 a is formed in a region separated from the power supply terminal 101 in the antenna element 82. In other words, in the first closed state, which is a normal state, the high current region 81a important for communication is not disposed at a position facing the Hall element 6.

  The magnetic field antenna unit 85 as the second antenna performs magnetic field communication with an external device using a predetermined use frequency band (for example, 13.56 MHz). The magnetic field antenna unit 85 is configured by, for example, a coil wound in a plurality of times on a sheet made of PET (polyethylene terephthalate) material. Further, the magnetic field antenna unit 85 is disposed in the vicinity of the antenna unit 80.

  The battery 90 is detachably accommodated in the battery accommodating portion 92 through an opening 92a formed in the rear case 2b. The battery housing portion 92 is formed by the rear case 2 b and a part of the second surface 73 of the circuit board 70. Then, in a state where the battery 90 is accommodated, the battery lid 25 is disposed so as to close the opening 92a, so that the battery 90 can be prevented from falling off.

  As shown in FIG. 10, the display unit side body 3 is a circuit board including a front case 3a, a display unit 100, an internal frame 110 made of a metal member, a reference potential pattern layer, and display electronic components. 120, a sub display unit 130, and a rear case 3b.

  The front case 3a and the rear case 3b are arranged so that their concave inner surfaces face each other, and are joined so that their outer peripheral edges overlap. Further, between the front case 3a and the rear case 3b, the display unit 100, the internal frame 110, the circuit board 120, and the sub display unit 130 are accommodated and arranged in this order from the front case 3a side.

  The front case 3a is formed by fixing the LCD cover 300b and the front cover 300c on the surface of the case body 300a.

  The display unit 100 includes a display 30 and a holder that fixes the display 30.

  The inner frame 110 is a member having an H-shaped cross section, and shallow concave accommodating portions are formed on the front case 3a side and the rear case 3b side. The display unit 100 is accommodated and disposed on the front case 3a side of the internal frame 110, and the circuit board 120 is accommodated and disposed on the rear case 3b side. Here, the internal frame 110 functions as a reinforcing member for securing rigidity with respect to the bending operation and the twisting operation in the display unit side body 3 and a shield for electrostatic countermeasures.

  The circuit board 120 is accommodated and arranged on the rear case 3b side of the internal frame 110 as described above. Various electronic components (not shown) are arranged on the rear case 3b side of the circuit board 120. The audio output unit 31 described above is disposed on the outer end side opposite to the connection unit 4 in the circuit board 120. In addition, various electronic components form circuit blocks such as a display control block that performs display control of the display mode and timing of the display 30 and the sub-display 32 by a predetermined combination.

  A reference potential pattern layer (not shown) is formed on the circuit board 120 on the front case 3a side. A conducting member is disposed between a predetermined position on the reference potential pattern layer and a predetermined position on the surface facing the internal frame 110. Thereby, the reference potential pattern layer in the circuit board 120 and the internal frame 110 are electrically connected.

  The Hall element 6 is disposed at the end of the circuit board 120 opposite to the connecting portion 4 side. The hall element 6 is arranged at the end opposite to the connecting portion 4 side in the longitudinal direction of the display unit side body 3 and is arranged so as to be biased to one side in the width direction. In addition, the Hall element 6 is disposed at a position facing the convex portion 7a in the magnetic portion 7 in the first closed state. In addition, the Hall element 6 is disposed at a position that does not face the convex portion 7a in the magnetic portion 7 in the second closed state.

  The Hall element 6 detects magnetic field lines. Specifically, the Hall element 6 detects the strength of the magnetic field lines. More specifically, the Hall element 6 detects the strength of the lines of magnetic force radiated from the magnetic part 7. Explaining for each state, in the first closed state, the Hall element 6 detects the second magnetic force from the magnetic part 7. In the second closed state, the Hall element 6 detects a first magnetic force that is weaker than the second magnetic force from the magnetic unit 7. In the first open state and the second open state, the Hall element 6 does not detect the magnetic force from the magnetic unit 7. In this manner, a state detection unit (not shown) included in the CPU detects the open / close state and the front / back state according to the strength of the magnetic field lines detected by the Hall element 6. Specifically, the first closed state, the second closed state, the first open state, and the second open state are detected according to the strength of the magnetic field lines detected by the Hall element 6.

  The sub display unit 130 includes a sub display 32 and a holder for fixing the sub display 32. The sub display unit 130 is disposed so as to be sandwiched between the rear case 3 b and the circuit board 120. That is, the sub display unit 130 presses the circuit board 120 against the inner frame 110 side by a force applied by being sandwiched between the front case 3a and the rear case 3b.

  Moreover, the sub display unit 130 is arrange | positioned so that it may expose from the window part 3c formed in the rear case 3b as mentioned above.

Next, an aspect in which the state in the mobile phone 1 is detected and determined will be described.
As an initial setting, when the Hall element 6 cannot detect a magnetic force equal to or higher than the first magnetic force having a predetermined strength, the state detection unit determines that the mobile phone 1 is in an open state and applies a magnetic force equal to or higher than the first magnetic force. If detected, the state detection unit is set to determine that the mobile phone 1 is in the closed state. Furthermore, when the Hall element 6 detects a magnetic force equal to or higher than the second magnetic force stronger than the first magnetic force, the state detection unit determines that the mobile phone 1 is in the front state (first closed state, closed state) in the closed state. In addition, when detecting a magnetic force greater than or equal to the first magnetic force and weaker than the second magnetic force, the state detection unit is set to determine that the mobile phone 1 is in the back state (second closed state, turn-closed state) in the closed state. To do.

  First, when the mobile phone 1 is in the first closed state (closed state) that is deformed so as to be closed about the opening / closing axis X, the hall element 6 and the convex part 7a of the magnetic part 7 are arranged to face each other. Specifically, as shown in FIG. 11, the tip of the convex portion 7 a of the magnetic portion 7 is disposed so as to face the Hall element 6. Thereby, the Hall element 6 detects a magnetic force (line of magnetic force, magnetic flux density) equal to or higher than the second magnetic force radiated from the magnetic part 7. Then, the state detection unit determines that the mobile phone 1 is in the first closed state.

  Next, when the cellular phone 1 is deformed to the open state so as to open about the opening / closing axis X, the Hall element 6 and the magnetic portion 7 (the convex portion 7a) are separated from each other. As a result, the Hall element 6 cannot detect magnetic lines of force from the magnetic part 7. In detail, the Hall element 6 cannot detect a magnetic force greater than or equal to the first magnetic force. Since the strength of the magnetic force detected by the Hall element 6 is smaller than the first magnetic force, the state detection unit determines that the mobile phone 1 is in the open state.

  Subsequently, when the display unit side body 3 is rotated about the rotation axis Y and is deformed to the second closed state so as to be closed about the opening / closing axis X, the convex portion of the Hall element 6 and the magnetic unit 7 It is not arranged to face 7a. That is, the distance between the convex portion 7a and the Hall element 6 in the second closed state is longer than the distance between the convex portion 7a and the Hall element 6 in the first closed state. In other words, the connection unit 4 is configured so that the distance between the convex portion 7a and the hall element 6 can be changed when the operation unit side body 2 and the display unit side body 3 are in a closed state (closed state). 2 and the display unit side body 3 are connected. In the present embodiment, a region different from the convex portion 7 a in the magnetic portion 7 is disposed to face the Hall element 6. Accordingly, the Hall element 6 detects a magnetic force that is equal to or greater than the first magnetic force radiated from the magnetic unit 7 and is weaker than the second magnetic force. Then, the state detection unit determines that the mobile phone 1 is in the second closed state.

  As described above, the state detecting means including the Hall element 6 and the magnetic part 7 formed in the antenna unit 80 can detect the open / closed state and the front / back state of the mobile phone 1 in the closed state. Then, according to the detected state of the mobile phone 1, it is possible to change the mode of characters and images displayed on the display 30 and to change the key assignment in the operation key group 11. In addition, when it is determined that the mobile phone 1 is in the first closed state, display of images and characters on the display 30 can be stopped.

  Here, in the present embodiment, when the Hall element 6 detects a magnetic force greater than or equal to the second magnetic force that is stronger than the first magnetic force, it is determined that the mobile phone 1 is in the first closed state, and the first The mobile phone 1 is set to be determined to be in the second closed state when a magnetic force greater than the magnetic force and weaker than the second magnetic force is detected. However, the present invention is not limited to this. That is, in the first open state and the first closed state, when the Hall element 6 and the convex portion 7a of the magnetic part 7 are arranged on different sides with respect to the center line, the Hall element 6 has a second magnetic force or more. It is determined that the mobile phone 1 is determined to be in the second closed state when the magnetic force is detected, and is determined to be in the first closed state when a magnetic force greater than the first magnetic force and weaker than the second magnetic force is detected. May be.

  According to the present embodiment, by forming the magnetic part 7 in the antenna element 82, it is possible to provide the mobile phone 1 having the state detecting means using the Hall element 6 as a magnetic sensor without using a magnet. Thereby, the number of parts in the mobile phone 1 can be reduced. Similarly, it is possible to provide the mobile phone 1 having the state detection means with few layout restrictions. Moreover, the miniaturized mobile phone 1 can be provided.

  In addition, according to the present embodiment, since the convex portion 7a is formed on the magnetic portion 7 and the space where the magnetic lines of force are formed on the tip side of the convex portion 7a is formed, compared with the case where the magnetic portion 7 is flat. Thus, the detectability of the magnetic force in the Hall element 6 is improved. Thereby, the state detectability of the mobile phone 1 is improved. Moreover, since the density of the magnetic force lines in the side space of the convex portion 7a can be reduced by forming the convex portion 7a, an adverse effect on the magnetic field communication antenna unit 65 can be suppressed. Thereby, the magnetic field antenna part 85 can be disposed close to the antenna element 82 in which the magnetic part 7 is formed.

  Moreover, according to this embodiment, since the convex part 7a in the magnetic part 7 was formed in the low current region 82b separated from the power supply terminal 101, it is possible to suppress a decrease in communication efficiency to a minimum.

  In addition, according to the present embodiment, the magnetic part 7 is formed on the antenna element 82 in which a shield such as a metal object is difficult to be disposed around, so that it is less susceptible to adverse effects such as shielding of magnetic field lines.

  Further, according to the present embodiment, the magnetic part 7 formed in the antenna element 82 is disposed at the end opposite to the connecting part 4 side in the operation unit side body 2, and the Hall element 6 is disposed on the display unit side body 3. Since the connecting portion 4 is disposed at the end opposite to the connecting portion 4, the distance between the two greatly changes corresponding to the deformation. As a result, the strength of the lines of magnetic force detected by the Hall element 6 is suitably changed, so that the mobile phone 1 has excellent state detectability such as opening and closing.

  Further, according to the present embodiment, since the magnetic part 7 is formed on the antenna element 82 that is arranged apart from the circuit board 70, the magnetic part 7 is formed from an electronic component or a ground pattern mounted on the circuit board 70. Spaced apart. This is preferable because it is excellent in state detectability such as opening and closing and the antenna sensitivity is improved.

  As mentioned above, although preferred embodiment of this form was described, this invention can be implemented with a various form, without being limited to embodiment mentioned above. For example, in this embodiment, a mobile phone is described as a mobile device. However, the mobile device of the present invention is not limited to this, and a PHS (Personal Handyphone System), PDA (Personal Digital Assistant), portable It may be a navigation device, a notebook computer, or the like.

  In the present embodiment, the mobile phone having the connecting portion 4 having a so-called biaxial hinge mechanism is described. However, the present invention is not limited to this, and a folder type having a so-called uniaxial hinge mechanism (open / close hinge mechanism) is described. It may be a mobile phone. In this case, only the open / closed state of the mobile phone 1 is detected. Further, in the present embodiment, a mobile phone that can be folded by the connecting portion 4 is described. However, the operation portion side housing 2 and the display portion side housing 3 are overlapped instead of such a folding type. One of the cases is slid in one direction from the closed state, and one case is rotated around an axis along the overlapping direction of the operation unit side case 2 and the display unit side case 3 A rotating (turn, revolver) type may be used.

  In the present embodiment, the Hall element 6 is used as the magnetic sensor. However, the present invention is not limited to this.

  Further, in the present embodiment, the antenna element 82 is arranged so that the planar portion faces the Hall element 6 side in the closed state, but is not limited to this, and the planar portion is inclined by 90 degrees from the state in the present embodiment. It may be arranged in a state. When the antenna element 82 is arranged in this state, the convex portion is formed on the end surface of the antenna element 82. Specifically, the outer edge of the antenna element 82 is not linear, but is formed to have a protruding portion (corresponding to the convex portion 7a).

  Further, the connecting portion 4 in the present embodiment has a biaxial hinge mechanism, so that the convex portion 7a and the hole when the operation unit side body 2 and the display unit side body 3 are in the closed state (closed state). The operation unit side body 2 and the display unit side body 3 are connected so that the distance from the element 6 can be changed. However, the connection unit 4 in the present invention is not limited to this, and the operation unit side body is not limited thereto. When the display unit 2 and the display unit side body 3 are in a closed state (closed state), the operation unit side unit 2 and the display unit side unit 3 are connected so that the distance between the convex portion 7a and the hall element 6 can be changed. Other configurations may be used.

The front view in the state (1st open state) which opened the mobile telephone 1 is shown. (A) The left view in the state which opened the mobile telephone 1 is shown, (B) The right view in the state which opened the mobile telephone 1 is shown. The rear view in the state which opened the mobile telephone 1 is shown. The perspective view in the state (first open state) which opened the mobile telephone 1 is shown. The top view of the display part side housing | casing 3 and the operation part side housing | casing 2 of the mobile telephone 1 closed and rotated centering on the opening-and-closing axis | shaft X of the connection part 4 is shown. The perspective view of the state which rotated the display part side housing | casing 3 of the mobile telephone 1 about the rotation axis Y of the connection part 4 by the predetermined angle is shown. The perspective view of the state (turn state, 2nd open state) which rotated the display part side housing | casing 3 of the mobile telephone 1 180 degrees centering | focusing on the rotation axis Y of the connection part 4 is shown. The perspective view of the state (turn closed state, the 2nd closed state) which closed and rotated the display part side housing | casing 3 of the mobile telephone 1 centering on the opening-and-closing axis | shaft X of the connection part 4 is shown. The disassembled perspective view of the operation part side housing | casing 2 is shown. The disassembled perspective view of the display part side housing | casing 3 is shown. FIG. 5 is a diagram illustrating the structure of an antenna element 82. It is a figure explaining arrangement | positioning with the magnetic part 7, the Hall element 6, and the magnetic field antenna part 85. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mobile telephone 2 Operation part side housing | casing 3 Display part side housing | casing 4 Connection part 6 Hall element 7 Magnetic part 7a Convex part 80 Antenna part 82 Antenna element 85 Magnetic field antenna part

Claims (5)

A first housing in which an antenna formed with a magnetic part is disposed;
A second housing in which a magnetic sensor for detecting the strength of the magnetic field lines is disposed;
A first hinge portion that connects the first housing and the second housing so as to be openable and closable;
A portable device comprising: a state detection unit that detects an open / closed state of the first housing and the second housing based on the intensity of a magnetic force line radiated from the magnetic unit detected by the magnetic sensor.   The portable device according to claim 1, wherein the magnetic part is formed with a convex part that protrudes toward the second casing when the first casing and the second casing are in a closed state.   The portable device according to claim 2, wherein a second antenna for magnetic field communication is disposed in the first housing.   The first casing and the second casing are capable of changing a distance between the convex portion and the magnetic sensor when the first casing and the second casing are in a closed state by the first hinge portion. The mobile device according to claim 2, further comprising: a second hinge portion that connects the two to each other. The antenna is disposed at an end of the first casing opposite to the first hinge part,
5. The portable device according to claim 1, wherein the magnetic sensor is disposed at an end portion of the second casing opposite to the first hinge portion.

Images