JP2004078727A - Electronic appliance - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic appliance capable of surely detecting an opened/closed state while suppressing influence to a magnetic medium. <P>SOLUTION: A peripheral part faced to a magnetic substance 8 of a hinge part 5a is formed of a raw material 21 passing magnetic force in the opened state of a display device 4, and in the closed state, the peripheral part is formed of a shielding plate 20 passing no magnetic force. When the display device 4 is rotated from the closed state to the opened state, the shielding plate 20 is moved in a direction coming out from a space between a magnetic sensor 10 and the magnetic substance 8, so that the magnetic force reaches the magnetic sensor 10, which detects the opened state of the display device 4. When the display device 4 is rotated from the opened state to the closed state, the shielding plate 20 enters into the space between the magnetic sensor 10 and the magnetic substance 8, the magnetic force is shielded and the closed state of the display device 4 is detected. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an electronic device having a display device that can be opened and closed, such as a notebook computer, and particularly to detection of an opening and closing operation of the display device.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there is an electronic device such as a notebook computer in which a display device having a built-in LCD is connected to be openable and closable. Such an electronic device is provided with a mechanism for detecting whether the display device is in a closed state or an open state.
[0003]
For example, as a conventional technique, Japanese Patent Application Laid-Open No. 2001-60774 discloses a technique in which a magnetic material is incorporated in a curved surface portion or a cam portion of a lid as a detecting means for detecting opening and closing of a lid of an electronic device, and a magnetic sensor is used to detect the magnetic material. Discloses a configuration for determining the rotation of the lid.
[0004]
[Problems to be solved by the invention]
However, in the conventional device, since the magnetic material is unprotectedly arranged at the mounting portion of the lid, if the magnetic force brings the magnetic medium close to the location where the magnetic material is built in, the information of the magnetic medium is not read. It could be destroyed.
[0005]
SUMMARY An advantage of some aspects of the invention is to provide an electronic device capable of reliably detecting an open / closed state while suppressing an influence on a magnetic medium.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, an electronic apparatus according to the present invention includes a main body having a keyboard, a display unit connected to the main body via a connection unit so as to be openable and closable, a magnetic member for generating magnetism, and the magnetic member. A detection unit that detects the magnetism of the display unit, and when the display unit is in the closed position with respect to the main body, the detection unit is located between the magnetic member and the detection unit, and the display unit is in the open position with respect to the main body. And a shielding member movable with the opening / closing operation of the display unit so as to be located at a position where the magnetic path between the detection unit and the magnetic member is not obstructed.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view of a notebook personal computer A (hereinafter referred to as a notebook personal computer) as an electronic apparatus according to an embodiment of the present invention.
[0008]
The main body 1 of the notebook computer A has an upper case 2 made of resin and a lower case 3 made of resin. A keyboard 9 is mounted on the upper surface of the main body 1. A palm rest 7 is formed on the front part of the upper surface of the main body 1 (the front side of the keyboard 9) so that the user can place a palm when inputting data to the keyboard 9.
[0009]
A display device 4 is connected to a rear portion of the main body 1 via a pair of hinge portions 5a and 5b so as to be openable and closable. The display device 4 has a built-in LCD 6 for displaying data.
[0010]
A magnetic body 8 (for example, a permanent magnet) is built in a rear portion of the main body 1 at a position facing the one hinge portion 5a. On the other hand, a magnetic sensor 10 composed of, for example, a reed switch is provided inside the hinge portion 5a.
[0011]
The magnetic sensor 10 is connected by a cable to a circuit board 15 described later provided inside the main body 1. The cable is provided from the main body 1 to the display device 4 via the hinge 5.
[0012]
FIG. 2 is a view schematically showing a cross section of the hinge portion 5a and the rear portion of the main body 1 when the display device 4 is open, and FIG. 3 is a diagram illustrating the hinge portion 5a and the rear portion of the main body 1 when the display device 4 is closed. FIG. 3 is a view schematically showing a cross section of FIG. FIG. 4 is a diagram showing another embodiment.
[0013]
As shown in FIGS. 2 and 3, a circuit board 15 on which various IC chips 16 are mounted is built in the main body 1, and a magnetic body 8 is provided on the circuit board 15 at a position facing the hinge portion 5 a. Are arranged.
[0014]
Corresponding to the magnetic body 8, a magnetic sensor 10 is disposed in the hinge 5a at a position affected by the magnetic force from the magnetic body 8. The magnetic body 8 is provided with a predetermined process (not described in detail) so as not to affect the circuit board 15 and other IC chips 16.
[0015]
Next, as for the material forming the hinge portion 5a, when the display device 4 as shown in FIG. 2 is opened, the surrounding portion of the hinge portion 5a facing the magnetic body 8 is formed of the material 21 that allows magnetic force to pass. . In a state where the display device 4 as shown in FIG. 3 is closed, a peripheral portion of the hinge portion 5a facing the magnetic body 8 is formed of a shielding plate 20 that does not pass magnetic force. The shielding plate 20 is also configured to move with the rotation of the hinge 5a.
[0016]
Therefore, when the display device 4 is turned (moved) from the closed state (FIG. 3) to the open state (FIG. 2), the shielding plate 20 located between the magnetic sensor 10 and the magnetic body 8 also rotates the display device 4. At the same time, it moves in a direction away from between the magnetic sensor 10 and the magnetic body 8. Accordingly, the magnetic force of the magnetic body 8 reaches the magnetic sensor 10 in the hinge portion 5a, and detects the open state of the display device 4.
[0017]
When the display device 4 is turned (moved) from an open state (FIG. 2) to a closed state (FIG. 3), a shielding plate is provided between the magnetic sensor 10 and the magnetic body 8 with the rotation of the display device 4. If the magnetic force is blocked and the magnetic sensor 10 does not reach the magnetic sensor 10, the closed state of the display device 4 is detected.
[0018]
In the present embodiment, the shielding plate 20 is connected to the front portion of the hinge portion 5a (the front side of the display device 4 where the LCD 6 is provided) when the display device 4 is opened at an angle normally used (about 90 to 100 degrees). First and second shielding members are provided at the rear (on the rear side of the LCD 6 of the display device 4).
[0019]
A portion between the first shielding member and the second shielding member and between the magnetic body 8 and the magnetic sensor 10 is formed so that a magnetic force passes therethrough.
[0020]
Therefore, the magnetic force of the magnetic body 8 reaches only the magnetic sensor 10 by the shielding plate 20, and the magnetic force is not released to the outside around the hinge 5a. Therefore, there is no effect on the magnetic media or the like approaching the hinge portion 5a.
[0021]
Further, when the display device 4 is in the closed state, the shielding plate 20 is located between the magnetic sensor 10 and the magnetic body 8, so that the magnetic force of the magnetic body 8 is generated by the shielding plate 20 around the hinge 5 a. No magnetic force is released to the outside. Therefore, even when the display device 4 is in the closed state, there is no effect on the magnetic media or the like approaching the vicinity of the hinge portion 5a.
[0022]
Further, in the present embodiment, as shown in FIG. 2, in a state where the display device 4 is opened at about 90 to 100 degrees, the front part and the rear part of the hinge part 5 a are configured to be covered with the shielding plate 20. However, when the shielding plate 23 is provided only at the front part of the hinge part 5a as shown in FIG. 4, not only the same effect is exerted on the use area side (keyboard side) of the electronic device A, but also the display device 4 can be set wider.
[0023]
Further, in the present embodiment, the configuration in which the magnetic body 8, the magnetic sensor 10, and the shielding plate 20 are provided on the hinge part 5 a side is described. Play.
[0024]
FIG. 5 schematically shows a system block diagram of the notebook personal computer A. Gate arrays (GA) 31, 36, a VGA controller 34, and a sound controller 41 are connected to the system bus 33.
[0025]
The CPU 30 and the system memory 32 are connected to the gate array 31. The LCD 6 is connected to the VGA controller 34. The speaker 19 (not shown) is connected to the sound controller 41.
[0026]
A hard disk drive (HDD) 40 and a control unit 37 are connected to the gate array 36. The controller 37 is connected to the BIOS-ROM 38, the power controller 42, and the magnetic sensor 10 including a reed switch.
[0027]
In the BIOS-ROM 38, a user can make a predetermined setting on the operation of the system when the display unit 4 is closed by a setting screen (not shown).
[0028]
For example, when the magnetic sensor 10 detects that the display unit 4 is closed, the system operation includes (1) power supply OFF to the LCD 6 (the system side is in a power ON state: panel OFF) or (2) panel The state of the system at the time of closing is stored in the memory or the hard disk drive 40 and the system power is turned off (suspend), or (3) the power supply to the entire system is stopped (shut down). Such power saving processing is exemplified.
[0029]
【The invention's effect】
As described above, according to the present invention, the open / closed state can be reliably detected while suppressing the influence on the magnetic medium.
[Brief description of the drawings]
FIG. 1 is a perspective view of a notebook personal computer A according to an embodiment of the present invention.
FIG. 2 is a diagram schematically showing a cross section of a hinge 5a and a rear portion of a main body 1 when the display device 4 is opened.
FIG. 3 is a diagram schematically showing a cross section of a hinge 5a and a rear portion of the main body 1 when the display device 4 is closed.
FIG. 4 is a diagram schematically showing a cross section of another embodiment of the hinge 5a and the rear portion of the main body 1 when the display device 4 is closed.
FIG. 5
FIG. 1 is a system block diagram of a notebook computer A.
[Explanation of symbols]
A electronic equipment, notebook personal computer 1 main body 2, 3 case 4 display device 6 LCD
8 Magnetic body 9 Keyboard 10 Magnetic sensor (lead switch)
20, 23 shielding plate

Claims (6)

A body having a keyboard,
A display unit connected to the main body via a connection unit so as to be openable and closable,
A magnetic member that generates magnetism,
A detection unit that detects the magnetism of the magnetic member,
When the display unit is in the closed position with respect to the main body, the display unit is located between the magnetic member and the detection unit, and when the display unit is in the open position with respect to the main body, the detection unit is used. A shielding member that is movable along with the opening / closing operation of the display unit, so as to be located at a place where the magnetic path with the magnetic member is not obstructed,
An electronic device comprising: The electronic device according to claim 1, wherein the magnetic member is provided inside the main body. The shielding member is located between the magnetic member and the detection unit when the display unit is in a closed position that is not used with respect to the main body, and the display unit is opened when the display unit is usable with respect to the main body. The display device according to claim 1, wherein the display unit is rotatable with the opening / closing operation of the display unit so as to be located at a position where the magnetic path between the detection unit and the magnetic member is not obstructed when the display unit is in the position. The electronic device according to claim 2. When the magnetism of the magnetic member is detected by the detection unit, the display unit is determined to be open, and when the magnetism of the magnetic member is not detected by the detection unit, the display unit is closed. The electronic device according to claim 1, further comprising a unit that determines that there is an electronic device. The electronic device according to claim 1, wherein the shielding member is provided at the connection portion. The shielding member includes a first shielding member that shields a front side of the display unit in the connection unit, and a second shielding member that shields a back side of the connection unit opposite to the front side of the display unit. The electronic device according to claim 5, wherein:

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