JP2000013047A - Electronics - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To secure a sufficient strength to reduce the thickness of a lid and to reduce the thickness of the entire device. SOLUTION: The outer surface of a rear case 30 of a lid is gradually expanded toward substantially the center thereof (near a point P1), and a substantially middle portion on a lower side 30a side of a hinge portion 3 side. A second curved surface region 34 that gently expands toward the vicinity (near the point P2), and the first and second curved surface regions 33 and 34.
And a curved concave surface area 35 along the boundary.
Therefore, when a part of the first curved surface area 33 is pushed, the part is pulled toward the vicinity of the point P1 of the rear case 30, and when a part of the second curved surface area 34 is pushed, the part is pushed. Since the rear case 30 is pulled toward the vicinity of the point P2 on the lower side 30a side, even if the plate thickness of the rear case 30 is reduced, the structural strength is improved, and even if the rear case 30 receives pressure by grasping. In addition, the rear case 30 is not easily deformed, sufficient strength can be secured, and the lid and the entire device can be reduced in thickness.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an electronic device such as a portable electronic device.

[0002]

2. Description of the Related Art In an electronic device such as a mobile device that can be easily carried, it is necessary to make the entire device compact in consideration of portability, and it is also necessary to consider functionality and operability. And the input section must be as wide as possible. As such an electronic device, for example, a keyboard serving as an input unit is provided on the upper surface of the device main body, a lid is rotatably mounted on the device main body by a hinge portion, and a liquid crystal display serving as a display unit is provided inside the lid. It is widely known that a device is provided to separate and widen a display unit and an input unit, and to protect a keyboard of a device main body and a liquid crystal display device in a lid by a lid. In this type of electronic device, it is necessary to electrically connect a liquid crystal display device provided on a lid and an electronic circuit in the device main body with a wiring connection sheet, so that the wiring connection sheet is not exposed to the outside at the time of the connection. Are connected to each other through a hinge portion. In this case, in order to absorb the rotating operation accompanying the opening and closing of the lid, the winding part of the wiring connection sheet is rolled and inserted into the cylindrical shaft of the hinge part, and one end of this winding part is inserted into the device body. The extension and the other end extend into the lid, thereby electrically connecting the liquid crystal display device of the lid to an electronic circuit in the device body.

[0003]

However, in such an electronic device, since the keyboard protects the keyboard of the device main body and the liquid crystal display device in the lid, the lid is required to have high strength. In order to respond, there has been a problem that the thickness of the lid increases and the entire device also increases in thickness.
Further, in this electronic device, in order to connect the liquid crystal display device of the cover and the electronic circuit in the device main body, the winding portion of the wiring connection sheet is rolled and inserted into the cylinder shaft of the hinge portion. In order to absorb the pivoting movement accompanying the opening and closing of the body with a sufficient margin, it is necessary to increase the winding diameter of the winding part of the wiring connection sheet, so that the cylindrical shaft becomes large, and the hinge part is inevitably associated with this. Has also become large, which has hindered the thinning of the lid and the entire device.

[0004] It is an object of the present invention to reduce the thickness of the lid while ensuring sufficient strength and to reduce the thickness of the entire device.

[0005]

According to the present invention, there is provided an electronic device in which a lid is rotatably attached to a main body of the device by a hinge portion, wherein the lid has a rear case and a front case, and has A flat display portion is provided so as to be exposed from the front case side so as to face the device main body, and the rear case has a first curved surface region which gently bulges toward almost a center of an outer surface thereof; A second curved surface region that gently swells toward the vicinity of the intermediate portion on one side of the hinge portion, and a curved concave region along a boundary between the first curved surface region and the second curved surface region. Features. According to the present invention, the first curved surface region in which the rear case gently bulges substantially near the center of the outer surface thereof, and the second curved surface gently bulges substantially in the vicinity of the intermediate portion on one side of the hinge portion. Since the configuration has the surface region and the curved concave region along the boundary between the first curved surface region and the second curved surface region, for example, when a part of the first curved surface region is pressed, The portion is pulled toward the vicinity of the center of the outer surface of the rear case, and when a part of the second curved surface region is pressed, the pressed portion is directed toward the vicinity of substantially the middle portion on one side of the hinge portion side. Therefore, even if the thickness of the rear case is reduced, its strength is improved due to its structure. Even if the rear case is subjected to pressure by grasping, the rear case is not easily deformed and has sufficient strength. Can be secured It makes it possible to reduce the thickness of the lid, can also be achieved and thus the entire device thinner.

In this case, as described in claim 2, the curved concave region has a semi-elliptical shape centered on the vicinity of the middle portion on one side of the hinge portion and passing substantially near the center of the outer surface of the rear case. For example, when both are grasped from the hinge part side in a state where the lid is overlaid on the device main body, the second curved surface area of the rear case is moved from the curved concave area to the hinge when the lid body is grasped from the hinge part side. The second curved surface area swells gently because the finger swells gently toward the vicinity of the middle part on one side of the part. Is grasped, a finger is put on the boundary of the first curved surface area in the curved concave area, and therefore, even if the apparatus main body and the lid are grasped in any direction, Finger on the area Runode, easy to grasp, yet strongly is very good portability because there is no need to know.

According to a third aspect of the present invention, the hinge portion includes a hollow projection provided on the main body of the device, an insertion recess provided on the lid body, and the hollow projection is inserted into the hinge, and the hollow projection and the insertion recess. And a connecting shaft rotatably connecting the connecting shaft, a reinforcing shaft provided at a central portion in the connecting cylindrical shaft, one end of which protrudes to the side of the connecting cylindrical shaft, and a winding portion wound around the reinforcing shaft. A wiring connection sheet extending at one end side into the device main body and the other end side of the winding portion extending into the lid, wherein the wiring connection sheet has one end side of the winding portion thickly wound, and If the configuration is such that the end portion of the wire connection sheet is thinly wound, the thinly wound portion is inserted into the connecting cylinder shaft, and the thick winding portion projects outside the connecting cylinder shaft, one end side of the winding portion of the wiring connection sheet To make it possible to absorb the rotational movement of the lid By inserting the small winding portion on the other end side of the winding portion into the connecting cylinder shaft, the connecting cylinder shaft does not have a large diameter, so that the hinge portion can be formed small, and thereby the lid can be formed. It is possible to reduce the thickness of the body and the entire device. In this case, as in claim 4, the winding portion of the wiring connection sheet is provided with a protruding piece projecting from the thick winding portion in the winding axis direction and wound in a cylindrical shape, and the end of the reinforcing shaft located on the thick winding portion side. By attaching a cap that clamps the projecting piece wound in a cylindrical shape to the reinforcing shaft, the torsion of the winding part of the wiring connection sheet during the turning operation of the lid can be reliably prevented, which is favorable. Can hold the winding part.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIGS.
An embodiment of an electronic device according to the present invention will be described. FIG. 1 is an external perspective view of an electronic device, and FIG. 2 is a perspective view schematically showing an internal configuration thereof. This electronic device is portable such as a mobile device, and has a configuration in which a lid 2 is rotatably attached to a device main body 1 by a hinge 3. The device main body 1 is a highly rigid metal case made of magnesium, and is approximately A5 size (for example, width L1).
Is about 210 mm and the vertical width L2 is about 132 mm). As shown in FIGS. 1 and 2, a keyboard 4 and a click button 5
a, 5b are provided. This click button 5a, 5b
Is equivalent to the left and right click buttons of the mouse,
It is provided side by side at the upper left on the upper surface of the device body 1.

As shown in FIGS. 2 and 3, a board unit 6 is provided on the left side of the keyboard 4 and a hard disk 7 is provided on the right side of the keyboard 4 as shown in FIGS. Under the subordinate, a modem 8 is provided as shown by hatching in FIG. At the rear end of the device body 1, a battery housing 9 for housing a battery box is provided. The device body 1 has a lower surface corresponding to the modem 8 and the battery housing 9 on the rear side protruding downward with a stepped portion 1a, whereby the front side is thinner and the rear side is thicker. ing. Although not shown, a connection portion such as a universal serial bus (USB) for electrically connecting to a camera or a printer is provided on the left side surface of the device body 1.

As shown in FIG. 3, the keyboard 4 has various keys 11 arranged on a metal chassis 10, a frame case 12 is arranged on the outer periphery of the key 11, and screws 4 a are provided from the lower side of the device body 1. It is mounted on the device main body 1 by being screwed into the frame case 12 through the hollow boss 1b inside the device main body 1. In this case, when the device main body 1 is placed on a table, the keyboard 4 has a predetermined inclination angle (2. (Inclination angle of about 5 to 3 degrees). Further, in the keyboard 4, since the rigidity of the device main body 1 is high, the thickness of the frame case 12 is thin and the width thereof is formed to be narrow, so that the width L 3 of the arrangement area of the keys 11 is reduced to the width L 1 of the device main body 1. (Approximately 210 mm), for example, about 204 mm, and its vertical width L4 is sufficiently large, for example, about 82 mm. Thus, the horizontal pitch of the keys 11 is set to about 15 mm, and the vertical pitch is set to about 14 mm.

As shown in FIG. 3, the board unit 6 includes a circuit board 13 and a heat conducting plate 14 for heat dissipation. As shown in FIGS. 3 and 11, the circuit board 13 has a control semiconductor device (LSI) 15, a support semiconductor device (LSI) 16, and various electronic components 17 mounted on its upper surface. The first to third connectors 18 to 20 are provided, and are supported on a hollow boss 1 b provided in the device main body 1. In this case, the first connector 18 is connected to the circuit board 13 and the keyboard 4 and a display unit 32 described later.
Are electrically connected to each other, and are provided on the upper right side of the circuit board 13. The second connector 19 is connected to the circuit board 1.
3 is electrically connected to the hard disk 7 and the modem 8, and is provided on the lower right side of the circuit board 13. The third connector 20 is for electrically connecting the circuit board 13 and a relay device 60 to be described later, and is provided substantially at the center of the lower surface of the circuit board 13 as shown in FIG. It is exposed to the lower side from the opening 1c.

The front side of the upper surface of the circuit board 13 is shown in FIG.
As shown in FIG. 1, a plurality of light-emitting diodes 21 as electronic components 17 are provided. These light-emitting diodes 21 are, as shown in FIGS. Correspond to a plurality of light emitting windows 22a and 22b respectively provided in the windows. As shown in FIG. 4, an upper lens 24 and a side lens 25 are provided in each of the light emitting windows 22a and 22b. The upper lens 24 has a prism shape, and its entrance surface 24a is formed as a diffusion surface.
From the vertical direction and the horizontal direction, the vertically separated light is diffused upward from the light emitting window 22a on the upper surface to the outside, and the horizontally separated light is incident on the side lens 25. . The side lens 25 has an incident surface 25a formed as a diffusion surface, and diffuses light incident from the incident surface 25a to the outside from the light emitting window 22b on the side surface.

As shown in FIG. 3, the heat dissipating heat conductive plate 14 is disposed on the upper surface side of the circuit board 13 and is configured to dissipate heat generated from the control semiconductor device 15 and dissipate the heat. I have. That is, the heat conduction plate 14 for heat dissipation
Is made of aluminum, and a portion corresponding to the control semiconductor device 15 is dented. The depressed portion is connected to the control semiconductor device 15 via the heat conductive material 26, A portion 14a extends and is connected to the battery housing portion 9 at the rear end of the device main body 1, and a portion 14a on the lower side.
b is connected to the inner surface on the near side of the device main body 1. Also,
A plurality of heat conductive sheets 27 are provided at predetermined positions on the upper surface of the heat conductive plate 14. In the heat dissipation plate 14 for heat dissipation, heat generated from the semiconductor device 15 for control is conducted to the battery housing 9 on the rear side and the front side of the device body 1 to dissipate heat. At this time, the rear surface and the lower surface of the battery housing portion 9 are opened, and only the upper portion protrudes rearward to serve as a radiation fin. The plurality of thermally conductive sheets 27 are made of thermally conductive silicone rubber, and are brought into contact with the lower surface of the chassis 10 of the keyboard 4 at a location away from the semiconductor device 15 for control, thereby providing the semiconductor device for control. In addition to conducting the heat generated from 15 to the chassis 10 to dissipate the heat, it also serves to absorb the impact of the keyboard 4 at the time of keying.

On the other hand, as shown in FIGS. 1 and 5 (a), the lid 2 includes a rear case 30 and a front case 31, in which a display unit 32 is provided from the front case 31 side. Exposed keyboard 4 of device body 1
Is provided in a state of facing. The rear case 30
It is formed of a highly rigid metal plate made of magnesium (for example, having a thickness of about 1 mm). This rear case 3
As shown in FIGS. 5 and 6, the outer surface of the first curved surface region 33 gently swells substantially near the center thereof (around the point P1 in FIG. 6), and one side of the hinge portion 3 ( In FIG. 6, near the middle portion on the lower side 30a side (P2 in FIG. 6).
Second curved surface region 34 gently bulging toward the vicinity of the point).
And a curved concave surface region 35 along the boundary between the first curved surface region 33 and the second curved surface region 34.
5 The height difference of the whole is almost the same as the thickness of the rear case 30.
m.

In this case, as shown in FIG. 6, the curved concave area 35 has a center at a position near the point P2 on the lower side 30a of the hinge portion 3 and a substantially halfway passing around a point P1 on the outer surface of the rear case 30. A crescent is formed along the ellipse. The reason why the curved concave region 35 is formed along the semi-ellipse is that the rear case 30 is rectangular, so that the upper side 30b and the left and right sides 30c except for the lower side 30a.
This is for increasing the strength by making the distance from the curved concave area 35 almost constant. For example, if the rear case 30 is a square, it is not necessary to make the case into a semi-elliptical shape, but it is sufficient to make it into a semi-circular shape. For this reason, in the second curved surface region 34, a curved surface that gently expands toward the vicinity of the center point P2 is formed in a substantially semi-elliptical planar shape. The second curved surface region 34 is formed as a planar region 34a having a planar shape from a position near the point P2 to the lower side 30a. Also,
The first curved surface region 33 is formed as a curved surface that gradually expands from a tangent line 30d substantially parallel to the upper side 30b circumscribing the curved concave region 35 to the upper side 30b, and the other left and right sides have a substantially planar shape. It is formed in the plane area 33a to be formed.

The front case 31 is formed of a highly rigid metal plate made of magnesium, similarly to the rear case 30, but the thickness of the metal plate is smaller than the thickness of the metal plate of the rear case 30, for example. As shown in FIG. 5B, when the external force is applied from the display unit 32 via the rear case 30, the structure is deformed to some extent. A display opening 36 is formed in the front case 31 so as to correspond to the display area of the display unit 32, and a touch pad 37 is provided in a lower right portion of the front case 31. The touch pad 37 is configured to detect XY coordinates by moving a finger in contact with the surface thereof. As shown in FIG. 2, when the device main body 1 is placed on a horizontal table and the lid 2 is opened at a predetermined angle and raised, as shown in FIG. Is installed at a position where the height H1 of the sheet is about 70 mm.

The display unit 32 is, as shown in FIG.
A liquid crystal display device (flat display unit) 40, a control board 41 for controlling the liquid crystal display device 40, and an inverter board 42 are provided. It is exposed corresponding to the use opening 36. As shown in FIG. 5A, the display unit 32 is mounted in the rear case 30 such that an end located on the upper side 30b side of the rear case 30 is slightly rotated by the support shaft 32a. Also, the display unit 3
2 has a rear surface elastically contacting an impact absorbing rubber 43 provided on the inner surface on the lower side 30 a side of the rear case 30. The shock absorbing rubber 43 is made of a material that is not easily deformed when receiving a sudden shock, and is easily deformed when receiving a slow shock. In addition, the lid 2 is formed so as to have a thin overall thickness of the rear case 30 and the front case 31 accommodating the display unit 32 of at least about 6 mm. The minimum thickness of the entire structure is about 25.4 mm.

As shown in FIGS. 1 and 2, hinges 3 for rotatably attaching the lid 2 to the main body 1 are provided on both the left and right sides of the main body 1 and the lid 2, respectively. In this case, the right hinge portion 3 is inserted into the wiring connection sheet 50 to be described later.
It is formed longer. That is, as shown in FIG. 7, the right hinge 3 is provided with a hollow protrusion 45 provided at the rear end of the upper surface of the device main body 1 and a hollow protrusion 45 provided at the rear end of the lid 2. And a connecting cylinder shaft 47 that rotatably connects the hollow protrusion 45 and the insertion recess 46.

The connecting cylinder shaft 47 is rotatably mounted on the end face of the hollow projection 45 and the end face of the insertion recess 46 facing the hollow projection 45, and protrudes into the lid 2 of the insertion recess 46. As shown in FIG. 8A, a slit 47a is formed in the connecting cylinder shaft 47 in the axial direction. The connecting cylinder shaft 47 has a left end portion 47 b protruding into the lid 2 and is closed. A reinforcing shaft 48 is provided between the inner surface of the connecting cylinder shaft 47 and the central portion of the connecting cylinder shaft 47. They are arranged with a gap. As shown in FIG. 7, the reinforcing shaft 48 is
7 is formed to have a smaller diameter than the inner diameter, and the left end is attached to the left end 47 b of the connecting cylinder shaft 47, and the right end protrudes from the connecting cylinder shaft 47 into the lateral hollow protrusion 45.

FIGS. 7 and 8 show the reinforcing shaft 48.
As shown in (b), the winding portion 51 of the wiring connection sheet 50
Is wrapped around. The wiring connection sheet 50 is obtained by applying wiring to a flexible film, and has a main body-side extension portion 52 that is wound and then extends into the device main body 1 on the right end side of the winding portion 51. And winding part 5
A lid-side extension 53 that extends into the lid 2 as it is is formed on the left end side of 1. This wiring connection sheet 50
After the winding part 51 is thinly wound around the reinforcing shaft 48, the main body-side extension part 52 is further wound into a thick winding, and in this state, the lid-side extension 53 is inserted into the slit 47 a of the connecting cylinder shaft 47, The thin winding portion of the winding portion 51 is inserted into the connecting cylinder shaft 47, and the thick winding portion of the main body-side extending portion 52 projects from the connecting cylinder shaft 47 into the lateral hollow projection 45. It is attached to a shaft 47.

In this case, the expanded state of the wiring connection sheet 50 has a shape as shown in FIG. That is, the winding portion 51 has a lateral width M1 substantially equal to the length of the reinforcing shaft 48, a vertical width M2 longer than the outer peripheral length of the reinforcing shaft 48, and the inner peripheral length of the connecting cylinder shaft 47. Are also formed in a short length. The lid-side extension 53 has a width M3 shorter than the length of the connecting cylinder shaft 47, and extends upward from the upper edge on the left end side of the winding portion 51. The main body-side extension 52 has a width M4 that is the same length as the width M3 of the lid-side extension 53, and is located at a predetermined distance from the lid-side extension 53, and extends upward from the upper edge on the right end side of the winding part 51. It is extended with an extra length M5 of the thick winding portion.

At the right end of the winding portion 51, as shown in FIGS. 7 and 8 (a), there is formed a projecting piece 54 which projects rightward from the main body side extending portion 52 and is wound into a cylindrical shape. At the right end of the reinforcing shaft 48 protruding from the thickly wound portion of the main body-side extension 52, a cap 55 for attaching the cylindrically wound projection piece 54 to the reinforcing shaft 48 is attached.
The right hinge 3 is connected to a connecting cylinder shaft 4 shown in FIG.
A connecting shaft (not shown) is rotatably attached to the end face of the hollow projection 45 on the side opposite to the end face 7 and the end face of the insertion recess 46 facing the end. Similarly, the left hinge portion 3 shown in FIG. 1 also has the hollow projection 45 and the insertion concave portion 46 rotatably attached by a connecting shaft (not shown).

FIG. 10 and FIG.
As shown in FIG. 1, a relay device 60 is detachably mounted on the lower surface of the device main body 1. The relay device 60 includes various external devices (not shown) such as a printer, a camera, and a television.
And an electronic device. The main case 61 is made of a synthetic resin and includes an upper case and a lower case.
It has. The main body case 61 has a width substantially the same as the width L1 of the device main body 1 and a vertical width in the front-rear direction formed to be approximately half the length of the rear side of the device main body 1, and a rear end portion thereof is high. The front end is formed to be low, whereby the upper surface of the main body case 61 is inclined lower toward the front side, and the inclined upper surface is formed in a concave shape corresponding to the protruding shape of the lower surface of the device main body 1.

In this case, the main body case 61 is
Is arranged, the keyboard 4 of the device body 1 is moved to approximately 13.
The key 11 of the C row of the keyboard 4 is tilted at a tilt angle of 5 degrees.
Is about 30 mm, and the height H2 to the center of the touch pad 37 is about 90 mm when the lid 2 is opened at a predetermined angle and erected in this state.
On the upper surface of the main body case 61, as shown in FIG.
A relay connector 62 provided on the lower surface of the circuit board 13 and electrically connected to the third connector 20 exposed from the opening 1c on the bottom surface of the device main body 1 is provided to protrude upward.

Further, inside the main body case 61, a lock mechanism 63 for detachably locking the device main body 1 with respect to the main body case 61 is provided. This locking mechanism 63
As shown in FIG. 11, a slide member 64 slidably disposed in a main body case 61, a spring member 65 for urging the slide member 64 in one direction (rightward in FIG. 11), and a spring A lock release button 66 for sliding the slide member 64 against the spring force of the member 65; and a push-up member for moving upward when the slide member 64 is slid by the lock release button 66 to push up the lower surface of the device body 1. 67.

In this case, the slide member 64 is provided with hook portions 68 which respectively move in the two long holes 61a while projecting upward from the two long holes 61a provided on the upper surface of the main body case 61. ing. This hook part 68
Is provided at the bottom of the device body 1 when the device body 1 is placed on the body case 61 and the relay connector 62 is electrically connected to the third connector 20 on the device body 1 side. The device main body 1 is configured to be locked to the main body case 61 by being inserted into and engaged with the locking hole 69. On the main body case 61, a positioning boss 70 is provided which is inserted into the hollow boss 1b provided on the device main body 1 from below and positions the main body case 61 and the device main body 1 to each other. This positioning boss 70 is used to smoothly move the lower surface of the device main body 1 without damaging it.
The upper end is formed in a hemispherical shape.

Various connecting portions (not shown) are provided on the rear end face side of the main body case 60. The connection unit includes a universal serial bus (USB) connector for connecting to an external device such as a camera, a printer, or a personal computer; a PS2 connector for connecting to an external input unit such as another keyboard or mouse; CRT connector for connecting to video equipment such as
In addition to a parallel port for connecting to a printing device such as a printer, a connector such as a floppy disk or a serial bus (RS232C) is provided. Also, in this case, the battery housing 9 at the rear of the device body 1
As shown in FIG. 11, a large-capacity battery box 71 is mounted so as to protrude to the rear of the device body 1 as shown by a two-dot chain line in FIG.

Next, a case where such an electronic device is used in a hand will be described. At this time, as shown in FIG. 1, with the lid 2 opened at a predetermined angle with respect to the device main body 1, hold the upper left of the device main body 1 with the left hand and hold the lower right of the lid 2 with the right hand. The touch pad process can be carried out by holding and holding, operating the two click buttons 5a and 5b with the thumb of the left hand, and operating the touch pad 37 with the thumb of the right hand.

This touch pad processing will be described with reference to the operation flow shown in FIG. This touch pad processing determines whether an input operation has been performed on the touch pad 37 (step S1). If an input operation has not been performed, the process waits until an input operation is performed.
It is determined which of the two click buttons 5a and 5b has been operated. Of the two click buttons 5a and 5b, for example, it is determined whether the right click button 5a has been operated (step S2). If it is determined that the click button 5a has been operated, a handwriting input process is executed (step S3). This handwriting input process is performed while holding down the right click button 5a with the left thumb.
After moving the thumb of the right hand on the touch pad 37 to draw a desired character or figure, the thumb of the left hand is clicked on the right click button 5a.
The characters and graphics drawn on the touch pad 37 are registered as input data in an electronic circuit in the device main body 1 by separating from the electronic circuit.

In step S2, the right click button 5
If it is determined that a has not been operated, it is determined whether the left click button 5b has been operated (step S4), and if it has been determined that the click button 5b has been operated, a drag process is executed (step S5). This drag processing is performed by moving the right thumb on the touch pad 37 in any of the vertical, horizontal, and diagonal directions while pressing the left click button 5b with the left thumb, and then moving the left thumb. Is released from the click button 5b on the left side, the range where the thumb has moved on the touch pad 37 is designated. If neither of the two click buttons 5a and 5b has been operated in steps S2 and S4, a cursor process is executed (step S6). In this cursor processing, the cursor displayed on the liquid crystal display device 40 of the display unit 32 is moved according to the movement of the thumb on the touch pad 37. When the handwriting input process in step S3, the drag process in step S5, and the cursor process in step S6 are executed, the flow ends.

In this manner, in this electronic device, as shown in FIG. 1, with the cover 2 opened at a predetermined angle with respect to the device main body 1, the upper left portion of the device main body 1 is held by the left hand, By holding the lower right portion of the lid 2 with the right hand, the electronic device can be stably held with both hands. At this time, since two click buttons 5a and 5b are provided side by side on the upper left of the upper surface of the device body 1,
When you hold the upper left of the device body 1 with your left hand,
This means that the two click buttons 5a and 5b can be easily operated with the thumb of the left hand. Further, since the touch pad 37 is provided at the lower right of the front case 31 of the lid 2, when the lower right of the lid 2 is held with the right hand, the thumb of the right hand is positioned on the touch pad 37, Therefore, the touch pad 37 can be easily operated with the right thumb. As described above, even if the electronic device is held with both hands, touch pad processing by the two click buttons 5a and 5b and the touch pad 37 can be easily performed, and the operability is extremely good.

In this case, when the device main body 1 is placed on a horizontal table and the lid 2 is opened at a predetermined angle to stand up, the touch pad 37 has a height from the placement surface to the center of the touch pad 37. The height H1 is set at about 70mm, so when using it by hand, the height to the center of the touch pad 37 becomes the optimal height of about 50mm. When the user performs the operation, or when placing the device on a table, the height of the center of the touch pad 37 is an optimum position according to the use condition, and the operability with the thumb is extremely good. Further, since the two click buttons 5a, 5b and the touch pad 37 can be operated so as to hold the device main body 1 or the lid 2, the electronic device does not fluctuate during the operation.
Input operation can be performed reliably and well in a stable state.

Further, in this electronic device, a rear case 30 of the lid 2 attached to the device main body 1 by the hinge portion 3 is provided.
As shown in FIGS. 5 (a) and 6, the outer surface of the first curved surface region 33 gently bulging toward the vicinity of the center thereof (around the point P1) and the lower side 30a of the hinge portion 3 The second curved surface region 34 swelling gently toward the vicinity of the intermediate portion (around the point P2), the first curved surface region 33, and the second curved surface region 33.
For example, when a part of the first curved surface region 33 is pressed, the pressed portion is the rear case 3 because the structure has the curved concave region 35 along the boundary with the curved surface region 34.
0 near the point P1 on the outer surface.
When a part of the curved surface area 34 is pushed, the pushed part is pulled toward the vicinity of the point P2 on the lower side 30a side of the hinge part 3.

Therefore, even if the thickness of the rear case 30 is reduced, its strength is improved due to its structure. Even if the rear case 30 is subjected to pressure by grasping, the rear case 30 is hardly deformed and has sufficient strength. Can be secured. In this case, since the rear case 30 is formed of a highly rigid metal plate made of magnesium, sufficient strength can be ensured even if the rear case 30 is formed as thin as about 1 mm. In addition, since the height difference between the entire regions 33 to 35 is about 1 mm, which is almost the same as the thickness of the rear case 30, the thickness of the entire lid 2 can be extremely thin, at least about 6 mm, and can be sufficiently reduced. Since the high strength can be ensured, the thickness of the lid 2 can be reduced, and the thickness of the entire device can be reduced.

In this lid 2, the front case 3
1 is formed of a highly rigid metal plate made of magnesium similarly to the rear case 30, and the thickness of the metal plate is formed to be smaller than the thickness of the metal plate of the rear case 30, for example, about 0.6 mm. 5B, when a large external force is applied to the outer surface of the rear case 30 and the curved concave area 35 of the rear case 30 presses the internal display unit 32, the front case 31 It can be deformed to some extent to absorb the external force, thereby preventing the display unit 32 from being damaged. Further, in the lid 2, the shock absorbing rubber 4 is provided on the inner surface of the rear case 30.
As shown in FIG. 5C, when an external force is applied to the liquid crystal display device 40 of the display unit 32 from the front case 31 side, the shock applied to the display unit 32 by the shock absorbing rubber 43 is provided. The display unit 32 can be prevented from being damaged.

Further, in this lid 2, the curved concave area 3
5 is substantially semi-elliptical centered on the lower middle 30a side of the hinge part 3 near the middle (near the point P2) and passing substantially near the center of the outer surface of the rear case 30 (near the point P1). Since it is formed, the upper side 30b and the left and right sides 30c, 3c except the lower side 30a of the rear case 30 are formed.
The distance from 0d to the curved concave region 35 is substantially constant, and thus the strength of the rear case 30 can be increased. In particular, when the lid 2 is overlaid on the device body 1 and both are grasped from the hinge 3 side, the second curved surface area 34 of the rear case 30
Swelling gently toward the vicinity of the point P2 on the lower side 30a side of the hinge portion 3 side, so that the swelling of the second curved surface region 34 causes a finger to be hooked, and the device main body from a direction other than the hinge portion 3 1 and the lid 2, when the first curved surface area 33 in the curved concave area 35 is grasped.
Therefore, even if the user grasps both the device main body 1 and the lid 2 from any direction, the finger is applied to any of the regions 33 to 35, so that it is easy to grasp. In addition, portability is extremely good because there is no need to grasp strongly.

In the hinge portion 3 of the electronic device, a wiring connection sheet 5 is provided in a connecting cylinder shaft 47 for rotatably connecting the hollow projection 45 of the device main body 1 and the insertion concave portion 46 of the lid 2.
When the winding portion 51 is wound around the reinforcing shaft 48 and inserted,
The winding portion 51 is thinly wound around the reinforcing shaft 48, and the main body-side extension portion 52 is thickly wound. In this state, the cover body-side extension 53 is inserted into the slit 47 a of the connecting cylinder shaft 47, and Since the winding portion was inserted into the connecting cylinder shaft 47 and the thick winding portion of the main body-side extending portion 52 was projected from the connecting cylindrical shaft 47 into the side hollow protrusion 45, the main body-side extending portion 52 side By the thickly wound portion, the rotating operation accompanying the opening and closing of the lid 2 can be absorbed with a margin, and the thinly wound portion of the winding portion 51 on the lid side extension 53 side is inserted into the connecting cylinder shaft 47. Since the connecting cylinder shaft 47 does not have a large diameter, the hinge portion 3 can be formed small, thereby making it possible to reduce the thickness of the lid 2 and the entire device.

In this case, a projecting piece 54 is formed at the right end of the winding part 51 so as to protrude from the main body-side extending part 52 and is wound into a cylindrical shape. 48, the winding portion 5 of the wiring connection sheet 50 when the lid 2 is rotated.
1 can be reliably prevented, and the winding portion can be held satisfactorily. Moreover, this hinge part 3
Since it can be formed small as described above, it can be provided at two places on the left and right of the device main body 1 and the lid 2, so that the lid 2
When opening and closing the cover 2, even if the user touches one of the right and left sides of the cover 2 and rotates the cover 2, the cover 2 can be satisfactorily rotated without being distorted. In this case, the operating torque of the hinge 3 on one side is about 10 Kg-mm, and only half the operating torque is required as compared with the case where the lid 2 is connected by one hinge. Since high strength is not required for the portion 3, the hinge portion 3 can be formed even smaller.

Also, in this electronic device, since the device main body 1 is a highly rigid metal case made of magnesium, the frame case 12 of the keyboard 4 does not need to be strong.
The thickness of the frame case 12 can be reduced and the width thereof can be reduced, so that the arrangement area of the keys 11 can be maximized, thereby obtaining the keyboard 4 with good operability. it can. For example, in this embodiment, the width L3 of the array area of the keys 11 is
(About 210 mm), for example, about 204 m
m, and the vertical width L4 thereof is also sufficiently large.
For example, it can be formed to about 82 mm. As a result,
Since the horizontal pitch of the keys 11 can be set to about 15 mm and the vertical pitch can be set to about 14 mm, the input operability of the keyboard 4 can be improved. In this case, since the lower surface of the device main body 1 corresponding to the modem 8 and the battery housing portion 9 on the rear side protrudes downward, the thickness of the front side is small and the thickness of the rear side is large. When the device main body 1 is placed on a table, the keyboard 4 is tilted at a predetermined tilt angle, in this embodiment, at a tilt angle of about 2.5 to 3 degrees. improves.

Further, in the device main body 1, the keyboard 4
Is provided with a circuit board 13 and a heat conducting plate 14 for heat dissipation, and the heat conducting plate 14 transfers heat generated from the semiconductor device 15 for control of the circuit board 13 to the rear end. The heat generated from the control semiconductor device 15 can be dispersed and radiated to a portion where a finger or the like does not touch. An abnormal rise in temperature of the keyboard 4 can be prevented. In particular, the rear surface and the lower surface of the battery housing portion 9 are opened, and only the upper portion protrudes rearward to serve as a radiation fin. Therefore, the surface area for heat dissipation is increased by the battery housing portion 9, whereby The heat radiation effect can be enhanced. Also, in this heat conductive plate 14,
A plurality of heat conductive sheets 27 are provided at predetermined locations on the upper surface thereof, and the plurality of heat conductive sheets 27 abut on the lower surface of the chassis 10 of the keyboard 4 at locations away from the semiconductor device 15 for control. Since the heat generated from the control semiconductor device 15 is dispersed and transmitted to the chassis 10 to dissipate the heat, the local temperature rise of the keyboard 4 can be prevented.

Further, in the device main body 1, a keyboard 4 is disposed on the upper surface, and a board unit 6 and a hard disk 7 are disposed in parallel below the keyboard 4,
By arranging the modem 8 below the rear part of the hard disk 7 to unitize each part, the assembling workability and productivity are good, and the first to third components are mounted on the circuit board 13 of the board unit 6. Connectors 18 to 20 are provided, and the circuit board 13 is electrically connected to the keyboard 4 and the display unit 32 by the first connector 18.
Electrically connects the circuit board 13 with the hard disk 7 and the modem 8 and electrically connects the circuit board 13 and the relay device 60 with the third connector 20, so that the connection workability is good and the productivity is high. Can be obtained. In particular, the keyboard 4 can be easily removed from the device main body 1 by removing a plurality of screws 4a from the lower side of the device main body 1, so that the board unit 6 and the hard disk 7 can be removed independently. Because it can be done, maintenance such as repair is good.

As described above, since the components incorporated in the device main body 1 are unitized, the board unit 6 and the hard disk 7 can be separated from each other. Therefore, the hard disk 7 can be made to have an impact-resistant structure, and a hard disk having excellent impact resistance can be obtained. In addition, since the substrate unit 6 and the hard disk 7 are separated from each other, the hard disk 7 can be hardly affected by the heat of both, and the life of the hard disk 7 can be extended. In addition, since the hard disk 7 can be arranged within the main unit 1 with a margin, the modem 8 with high power consumption can be disposed at the lower rear portion of the hard disk 7, thereby reducing the thermal conditions of the main unit 1. The modem 8 is located at the best place, and therefore, the temperature balance in the apparatus main body 1 can be set to an optimum state.

Furthermore, in this electronic device, the keyboard 4 can be tilted at an inclination angle of about 13.5 degrees by detachably mounting the relay device 60 on the lower surface of the device main body 1, and the key 11 can be tilted. Row C height 30mm
And the operability of the keyboard 4 can be further improved. In this case, since the relay device 60 is provided with the positioning boss 70 whose upper end portion is formed in a hemispherical shape on the main body case 61, when the device main body 1 is mounted on the main body case 61,
By inserting the positioning boss 70 smoothly into the hollow boss 1b without damaging the lower surface of the device with the hook portion 68, the positioning can be easily performed, and the rattling of the device body 1 at the time of mounting can be prevented. it can.
Further, in the relay device 60, since the slide member 64 is urged in one direction by the spring member 65, the device main body 1 is positioned against the spring force of the spring member 65 in a state where the slide member 64 is positioned by the positioning boss 70. It can be easily mounted simply by pressing on the case 61. Further, when removing the device main body 1, the lock release button 66 is
By simply pressing against the spring force of 5 and sliding the slide member 64, the lock is released by the hook 68, and the push-up member 67 moves upward to push up the lower surface of the device body 1, so that it is easy. The device main body 1 can be detached.

[0044]

As described above, according to the first aspect of the present invention, the rear case has the first curved surface region that gently expands to the vicinity of the center of the outer surface, and one side of the hinge portion side. The second curved surface region gently swelling toward the vicinity of the intermediate portion on the side, and the curved concave region along the boundary between the first curved surface region and the second curved surface region.
Even if the thickness of the rear case is reduced, its strength is improved due to its structure, and even if the rear case is subjected to pressure by grasping, the rear case is not easily deformed, and sufficient strength can be secured. The thickness of the lid can be reduced, and the overall device can be reduced in thickness. According to the second aspect of the present invention, the curved concave region extends along a substantially semi-ellipse centered on the vicinity of the substantially middle portion on one side of the hinge portion and passing substantially near the center of the outer surface of the rear case. Even if grasped from the hinge part side,
Even when grasped from other directions, the finger is placed on any of the first and second curved surface regions and the curved concave region, so that it is easy to grasp and it is not necessary to grasp strongly, so portability is extremely good. .

Further, according to the third aspect of the present invention, the hinge portion winds the wiring connection sheet in a connecting cylinder shaft rotatably connecting the hollow projection of the device body and the insertion recess of the lid. When winding the part around the reinforcing shaft and inserting it, wind one end side of the winding part thickly and the other end side thinly, insert this thin winding part into the connecting cylinder shaft, and Since it is configured to protrude to the outside of the connecting cylinder shaft, it is possible to absorb the rotating operation accompanying opening and closing of the lid with a large winding portion with sufficient margin, and by inserting the thin winding portion into the connecting cylinder shaft, Can be formed small without increasing the diameter, thereby making it possible to reduce the thickness of the lid and the entire device.
In this case, if the projecting piece wound in a tubular shape is provided on the winding portion of the wiring connection sheet, and the projecting piece wound in the tubular shape is sandwiched by the reinforcing shaft with a cap, the rotation of the lid can be prevented. In this case, the twist of the winding portion of the wiring connection sheet can be reliably prevented, and the winding portion can be favorably held.

[Brief description of the drawings]

FIG. 1 is an external perspective view showing an embodiment of an electronic apparatus of the present invention.

FIG. 2 is a perspective view schematically showing the internal configuration of FIG.

FIG. 3 is an exploded perspective view in which main parts of the device main body of FIG. 1 are enlarged.

FIG. 4 is an enlarged sectional view taken along the line AA of FIG. 1;

FIGS. 5A and 5B are cross-sectional views of the lid taken along line BB of FIG. 1, wherein FIG. 5A is an enlarged cross-sectional view thereof, and FIG. 5B is an enlarged view showing a deformed state of the front case when a large external force is applied from the rear case side. Sectional drawing, (c) is an expanded sectional view showing the state when the display unit received external force from the front case side.

FIG. 6 is an enlarged plan view of a main part of the rear case of FIG. 5;

FIG. 7 is an enlarged view, partially broken away, showing the right hinge portion of FIG. 1;

FIGS. 8A and 8B show the internal structure of the hinge portion of FIG. 7, wherein FIG. 8A is an exploded perspective view, and FIG. 8B is a perspective view of the assembled state.

FIG. 9 is a developed view showing a main part of the wiring connection sheet of FIGS. 7 and 8;

FIG. 10 is an exemplary side view showing a state where the electronic apparatus of FIG. 1 is mounted on the relay device;

FIG. 11 is an exploded perspective view of a main part of FIG. 10;

FIG. 12 is a view showing a flow of a touch pad process of the electronic device of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Device main body 2 Lid 3 Hinge part 30 Rear case 31 Front case 32 Display unit 33 1st curved surface area 34 2nd curved surface area 35 Curved concave area 45 Hollow projection 46 Insertion recess 47 Connecting cylinder axis 48 Reinforcement axis 50 Wiring Connection sheet 51 Winding part 52 Body-side extension part 53 Lid-side extension part 54 Projection piece 55 Cap

Claims (4)

[Claims] 1. An electronic device in which a lid is rotatably attached to a device main body by a hinge portion, wherein the lid has a rear case and a front case, and a flat display portion inside the front case includes the front case. The rear case is provided so as to be exposed from the side and opposed to the device main body, and the rear case has a first curved surface area gently bulging toward substantially a center of an outer surface thereof, and a substantially curved side area on one side of the hinge portion An electronic device, comprising: a second curved surface region that gently expands toward the vicinity of an intermediate portion; and a curved concave region along a boundary between the first curved surface region and the second curved surface region. 2. The curved concave area is formed along a substantially semi-ellipse centered around a substantially middle portion on one side of the hinge portion and passing substantially near a center of an outer surface of the rear case. The electronic device according to claim 1, wherein: 3. The hinge according to claim 1, wherein the hinge includes a hollow projection provided on the device main body, an insertion recess provided on the lid, into which the hollow projection is inserted, and the hollow projection and the insertion recess. A connecting cylinder shaft rotatably connected, a reinforcing shaft provided at the center of the connecting cylinder shaft and having one end projecting to the side of the connecting cylinder shaft, and one end of a winding portion wound around the reinforcing shaft; A wiring connection sheet, the other end of the winding portion being extended into the device main body, and the other end side of the winding portion being extended into the lid body. 2. The electronic device according to claim 1, wherein the other end side is thinly wound, the thinly wound portion is inserted into the connecting cylinder shaft, and the thickly winding portion projects outside the connecting cylinder shaft. machine. 4. The winding portion of the wiring connection sheet is provided with a protruding piece projecting in a winding axis direction from the thick winding portion and wound in a cylindrical shape, and the reinforcing shaft positioned on the side of the thick winding portion is provided. 4. The electronic device according to claim 3, wherein a cap is attached to an end portion of the reinforcing shaft so as to clamp the projecting piece wound into the cylindrical shape.