JP2002215267A - Portable electronic equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate necessity of providing a leg part, to automatically incline a keyboard part simply by opening an upper case and to evade a power supply part to be a hindrance even when it is formed as a large part. SOLUTION: This portable electronic equipment is compactly carried since the power supply part 3 is placed on the rear end parts of the respective cases 1, 2 when the upper case 2 having a display part 7 is superposed on a lower case 1 having a keyboard part 6. In addition, the power supply part 3 is used as the leg part since link mechanism 4 moves the power supply part 3 toward the lower side of the rear end part of the lower case 1 linked with opening of the upper case 2 to the upper side of the lower case 1 when the upper case 2 is opened in the upper direction of the lower case 1 centering around a hinge part 5 at the above state. Thus, no leg part as a separate component is not required, the keyboard part 6 is automatically inclined simply by opening the upper case 2, the power supply part 3 does not become the hindrance when the upper case 2 is opened even when the power supply part 3 is formed to be of large size and the upper case 2 is opened to a sufficient angle, for example, to the extent of 180 degrees.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a portable electronic device, and more particularly, to a tilt structure of a portable electronic device.

[0002]

2. Description of the Related Art Conventionally, a portable electronic device such as a laptop personal computer has a lower case having a keyboard portion and an upper case having a display portion, and the upper case can be rotated by the lower case. The upper case is rotated and opened above the lower case when used, and the upper case is rotated and closed on the lower case when being carried. In such a portable electronic device, in order to improve the operability of the keyboard portion, legs are provided on the lower surface of the lower case so as to be able to protrude and retract, and when the upper case is opened and used, the legs of the lower case are projected. The keyboard portion is tilted together with the lower case by the legs.

[0003]

However, such a portable electronic device has a problem that the number of parts increases because the keyboard cannot be tilted unless the legs are provided in the lower case. In this portable electronic device, in order to secure a sufficient power supply, it is considered that the power supply unit is formed separately from the upper case and the lower case to make the power supply unit larger. If the upper case and the lower case are arranged on the rear end side, the power supply unit becomes an obstacle when the upper case is opened, and a problem arises that the upper case cannot be opened at a sufficient angle, for example, 180 °.

[0004] It is an object of the present invention to eliminate the need to provide a leg, to automatically tilt the keyboard by opening the upper case, and to open the upper case even if the power supply is made large. An object of the present invention is to provide a portable electronic device in which a power supply unit does not interfere.

[0005]

According to a first aspect of the present invention, there is provided a portable electronic device having a lower case having a keyboard portion and a display portion, the lower case being rotatably attached to the lower case. An upper case that overlaps the case,
When the upper case overlaps the lower case and is closed, the power supply units located at the respective rear end sides of the lower case and the upper case, and the upper case interlocks with the opening operation of the upper case. A link mechanism for moving the power supply unit toward a lower side of a rear end of the lower case.

According to the present invention, when the upper case is superimposed on the lower case, the power supply unit is located at the rear end side of each case, so that the power supply unit can be compactly carried. When the upper case is opened above the lower case, the link mechanism moves the power supply unit toward the lower side of the rear end of the lower case in conjunction therewith, so that the power supply unit can be used as a leg. Therefore, the keyboard part can be automatically tilted by opening the upper case without the need for a separate leg part as in the related art, and when the upper case is opened even when the power supply part is formed large. In addition, the power supply unit is not obstructed, and the upper case can be opened at a sufficient angle, for example, about 180 °.

A portable electronic device according to a second aspect of the present invention has a lower case having a keyboard portion and a display portion, is rotatably mounted on the lower case, and overlaps the lower case. An upper case, a power supply unit located at each rear end side of the lower case and the upper case when the upper case overlaps the lower case and is closed, and an opening and closing operation of the upper case. A cam mechanism that operates in conjunction with the link mechanism; and a link mechanism that moves the power supply unit toward the lower side of the rear end of the lower case in conjunction with the operation of the cam mechanism when the upper case is opened. It is characterized by the following.

According to the present invention, similarly to the first aspect, when the upper case is overlaid on the lower case,
Since the power supply unit is located at the rear end of each case, it can be compactly carried, and in this state, when the upper case is opened above the lower case, the cam mechanism operates in conjunction with this and the Since the link mechanism moves the power supply toward the lower side of the rear end of the lower case in conjunction with the operation of the cam mechanism, the power supply can be used as a leg. Therefore, the keyboard part can be automatically tilted by opening the upper case without the need for a separate leg part as in the related art, and when the upper case is opened even when the power supply part is formed large. In addition, the power supply unit is not obstructed, and the upper case can be opened at a sufficient angle, for example, about 180 °. In this case, by opening the lower case and the upper case at substantially 180 degrees as described in claim 3, the user can operate the keyboard unit while looking at the display unit at the time of use. People can also see the display from the opposite side at the same time.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment A first embodiment of a portable electronic device according to the present invention will be described below with reference to FIGS. This portable electronic device is a laptop personal computer, and includes a lower case 1, an upper case 2, a power supply unit 3, and a link mechanism 4, as shown in FIG. The rear end of the upper case 2 is rotatably mounted on the rear end of the lower case 1 by a hinge 5 so that the power supply 3 is linked to the lower case 1 and the upper case by a link mechanism 4. 2 and is configured to move in the up-down direction at each rear end side.

In this case, the upper surface of the lower case 1
As shown in FIG. 1, a keyboard unit 6 is provided. Various keys such as character keys, cursor keys, numeric keys, and function keys are arranged on the keyboard unit 6. In addition, a display unit 7 is provided on a surface (upper surface in FIG. 4) of the upper case 2 facing the upper surface of the lower case 1. The display unit 7 is a flat display such as a liquid crystal display device or an EL (electroluminescence) display device. The hinge portion 5 includes upper projecting portions 5a provided on both sides of a rear end (right end in FIG. 2) of the upper case 2.
And a lower protruding portion 5b provided on a rear end portion (right end portion in FIG. 2) of the lower case 1. The upper protruding portion 5a of the upper case 2 is disposed between the lower protruding portions 5b of the lower case 1. In this state, as shown in FIG. 4 and FIG.
And a lower protruding portion 5b are rotatably mounted on a shaft 5c. The power supply unit 3 is a substantially cylindrical case that houses a battery (not shown) therein. As shown in FIG. 3, the outer peripheral surface of the power supply unit 3 has a lower case 1 and an upper case 2 that are overlapped. And the size is almost the same as the thickness.

As shown in FIGS. 1 and 4, the link mechanism 4 has arms 8 provided at both ends of the power supply unit 3 and guide grooves 9 provided on both sides on the rear side of the upper case 2.
And a connecting pin 10 provided in the arm portion 8 and moving in the guide groove 9. When the upper case 2 is overlaid on the lower case 1 and closed, the power supply portion 3
The power supply unit 3 is located on the rear end side of the lower case 1 without protruding in the up-down direction and interlocks with the opening and closing operation of the upper case 2 in which the upper case 2 rotates about the hinge 5. It is configured to move up and down along the rear end face. That is, the link mechanism 4 is connected to the upper case 2
When the is rotated and opened, the power supply unit 3 is moved toward the lower side of the rear end of the lower case 1 in conjunction with this.

In this case, the upper projecting portion 5a of the upper case 2
Has an arc-shaped rear end (the right end in FIG. 3). Also, the lower case 1 and its lower protrusion 5b
3 and 5, the rear end face of the lower protruding portion 5b protrudes toward the power supply section 3 as shown in FIGS. 3 and 5, when the upper case 2 is overlaid on the lower case 1. , The upper surface of the outer peripheral surface of the power supply unit 3 is formed in a curved surface that is in close contact. As shown in FIG. 5, the rear end surface of the lower case 1 guides the power supply unit 3 substantially vertically downward when the upper case 2 opens at a predetermined angle (for example, about 120 °). As shown in FIG.
The power supply unit 3 is formed into a curved surface that allows the power supply unit 3 to escape to the lower side of the lower case 1 when opened at 80 °.

In such a portable electronic device, when the upper case 2 is turned around the hinge 5 and closed, as shown in FIGS. 1 and 3, the upper case 2 overlaps the lower case 1, Since the connecting pin 10 of the ring mechanism 4 is located at the rear end (the right end in FIG. 3) of the guide groove 9 of the upper case 2, the power supply unit 3 is provided on each of the rear end surfaces of the lower case 1 and the upper case 2. It is arranged without protruding up and down, so that it can be compactly carried. In use, the upper case 2 is rotated about the hinge 5 so that the upper case 2 is rotated above the lower case 1 by a predetermined angle (for example, 120 °).
When it is opened back and forth, as shown in FIG. 4, the keyboard 6 of the lower case 1 and the display 7 of the upper case 2 are exposed and can be used.

At this time, as shown in FIGS. 4 and 5, the connecting pin 10 of the link mechanism 4 moves in the guide groove 9 of the upper case 2 and moves toward the front end of the guide groove 9 (the upper end in FIG. 5). ), The arm 8 is connected to the power supply 3.
Is pushed down along the rear end surface of the lower case 1, so that the lower side of the power supply unit 3 projects below the lower case 1, and the protruding power supply unit 3 comes into contact with a desktop (not shown) to contact the rear end of the lower case 1. Push up the part. As a result, the lower case 1 is inclined forward and downward, so that the keyboard unit 6 is also inclined forward and downward. This inclination angle gradually increases as the opening angle of the upper case 2 increases, and becomes maximum when the upper case 2 is opened at 180 °. In this state, the upper case 2 is rotated in the closing direction to rotate the upper case 2. The maximum inclination angle is maintained even if the opening angle is reduced. Thus, the inclination angle of the keyboard 6 can be adjusted by opening and closing the upper case 2.

That is, once the upper case 2 is opened to 180 °, as shown in FIG.
The upper case 2 pushes down the arm portion 8 most when the front end of the guide groove 9 is in contact with the front end portion (right end portion in the figure) of the guide groove 9. It is pushed down and protrudes. At this time, since the power supply unit 3 moves while being in contact with the desktop (not shown), the power supply unit 3 is sandwiched between the lower surface of the rear end of the lower case 1 and the desktop. For this reason, even if the upper case 2 is rotated in the closing direction to return to the predetermined angle (around 120 °) shown in FIG. 5, the power supply unit 3 does not move in the vertical direction, and only the connecting pin 10 is connected to the guide groove 9. 8 moves from the front end side (right end side in FIG. 8) to the rear end side (left end side in FIG. 8). Of the lower case 1 and the keyboard 6 can be adjusted.

As described above, according to the portable electronic device, when the upper case 2 is overlaid on the lower case 1,
Since the power supply unit 3 is located on the rear end side of each of the cases 1 and 2 without protruding up and down, it can be compactly carried. When the upper case 2 is opened in this state, the link mechanism 4 moves the power supply unit 3 toward the lower side of the rear end of the lower case 1 in conjunction with the opening, so that the power supply unit 3 is used as a leg. can do. For this reason, the keyboard unit 6 can be automatically tilted by opening the upper case 2 without the need for a separate leg as in the conventional case.

Further, in this portable electronic device, in order to supply a sufficient power, the power supply section 3 is formed so as to have a size substantially equal to the entire thickness of the lower case 1 and the upper case 2 superimposed on each other. However, when the upper case 2 is opened, the power supply unit 3 moves to the lower side of the lower case 1, so that the power supply unit 3 does not interfere and the upper case 2 is opened at a sufficient angle, for example, about 180 °. be able to. In addition, if the lower case 1 and the upper case 2 are used by being opened at almost 180 °, the user can operate the keyboard 6 while looking at the display unit 7, and the other person also opposes the display unit 7. Since it can be viewed from the side at the same time, a convenient one can be obtained.

[Second Embodiment] Next, a second embodiment of a portable electronic device according to the present invention will be described with reference to FIGS. The same parts as those in the first embodiment shown in FIGS. In this portable electronic device, the link mechanism 15 has a structure different from that of the first embodiment, and otherwise has substantially the same structure as that of the first embodiment. That is, the link mechanism 15 includes a first link member 16 and a second link member 17, as shown in FIGS.

The first link member 16 is shown in FIGS.
As shown in FIG.
And the upper case 2 is rotatably mounted on the shaft 5 c of the hinge 5, and the other end is inserted into the cutout recess 18 of the power supply 3, and It is rotatably mounted. As shown in FIGS. 11 and 13, the second link member 17 has one end disposed in a concave portion 20 provided on the rear lower surface of the lower case 1 and is rotatable by a shaft (not shown). Attached,
The other end is rotatably attached to a lower part on the front side of the power supply unit 3 by a shaft (not shown).

In this case, as shown in FIGS. 10 and 21 (a), the shaft 5a of the hinge portion 5 located between the first link member 16 and the upper projecting portion 5a of the upper case 2 has A coil spring 21 for urging the link member 16 toward the lower protruding portion 5b of the lower case 1 is attached. Also, the first link member 16 and the upper projecting portion 5 of the upper case 2
As shown in FIGS. 21B to 21D, a first cam portion 22 is provided on each of the opposing surfaces of the first link member 16 and the lower projecting portion 5 a of the lower case 1. A second cam portion 23 is provided on each of the facing surfaces.

The first cam portion 22 is shown in FIGS.
As shown in (d), a rectangular projection 24 provided on a facing surface of the upper projection 5a facing the first link member 16,
A fitting recess 25 provided on the facing surface of the first link member 16 opposed thereto and into which the rectangular projection 24 is removably fitted.
And a guide groove 26 continuously provided in the fitting recess 25 and into which the rectangular protrusion 24 is inserted and removably moved. When the upper case 2 is in the initial state shown in FIG. 17 in which the upper case 2 overlaps the lower case 1, the rectangular projection 24 fits into the fitting recess 25 as shown in FIG. Accordingly, the first link member 16 is rotated together with the upper case 2. When the upper case 2 is slightly opened, as shown in FIG. 18, the first cam portion 22 is pushed out of the fitting recess 25 as shown in FIG. Groove 26
When the upper case 2 is further opened in this state, as shown in FIG.
After moving inside the guide groove 26 and rotating only the upper case 2, the rectangular projection 24 abuts on the end of the guide groove 26 to stop the rotation of the upper case 2. .

Further, as shown in FIG. 21 (b), the second cam portion 23 has an inclined projection 27 provided on the facing surface of the first link member 16 facing the lower projecting portion 5b, And an inclined concave portion 28 which is provided on an opposing surface of the lower projecting portion 5b to be engaged with the inclined projecting portion 27 in a detachable manner. When the upper case 2 is in the initial state shown in FIG. 17 in which the upper case 2 overlaps the lower case 1, as shown in FIG.
In this state, when the upper case 2 is slightly opened as shown in FIG. 18, the inclined protrusion 27 approaches the inclined recess 28 as shown in FIG. This prevents rotation of the first link member 16, but when the upper case 2 rotates in the closing direction and the rectangular protrusion 24 of the first cam portion 22 engages with the fitting recess 25, As shown in FIG. 21 (b), the inclined protrusion 27 is
8.

In such a portable electronic device, when the upper case 2 is rotated around the hinge 5 and closed, the upper case 2 overlaps the lower case 1 and the link mechanism 15 as in the first embodiment. As a result, the power supply unit 3 is arranged on each of the rear end surfaces of the lower case 1 and the upper case 2 without protruding upward and downward, so that the portable unit can be compactly carried. At this time, the first link member 16 is
Without protruding upward, between the lower protruding portion 5b and the upper protruding portion 5a and in the cutout recess 18 of the power supply portion 3, and the second link member 17 protruding below the lower case 1. Instead, the link mechanism 15 is disposed in the concave portion 20 of the lower case 1, so that the link mechanism 15 does not become an obstacle and can be carried satisfactorily.

Before use, FIG.
As shown in (b), the inclined projection 27 of the second cam 23 is disengaged from the inclined recess 28, and the rectangular projection 24 of the first cam 22 is fitted in the fitting recess 25. When the upper case 2 is rotated around the center 5 and opened, the upper case 2
18, the first link member 16 rotates about the shaft 5c of the hinge part 5 as shown in FIG. At this time, the power supply unit 3
3 moves downward while being drawn to the rear end of the lower case 1.
, The lower case 1 is inclined forward and downward, and the keyboard 6 is also inclined accordingly.

Thereafter, when the upper case 2 is further opened slightly as shown in FIG. 19, the inclined projection 27 of the second cam portion 23 is inclined by the spring force of the coil spring 21 as shown in FIG. The first link member 16 is stopped by fitting into the concave portion 28. At the same time, the rectangular projection 24 of the first cam 22 is pushed out of the fitting recess 25 and can be inserted into the guide groove 26. For this reason, when the upper case 2 is further opened, the first link member 16 does not rotate, and the power supply unit 3 does not move downward, and the rectangular protrusion 24 moves in the guide groove 26. Only the upper case 2 rotates, whereby the upper case 2 can be opened up to approximately 180 °.

As described above, in this portable electronic device, similarly to the first embodiment, the upper case 2 is connected to the lower case 1.
When the power supply unit 3 is placed on the upper side, the power supply unit 3 is located at the rear end side of each of the cases 1 and 2, so that the power supply unit 3 can be carried compactly. Since the mechanism 15 moves the power supply 3 toward the lower side of the rear end of the lower case 1, the power supply 3 can be used as a leg. Therefore, the keyboard unit 6 can be automatically tilted by opening the upper case 2 without the need for a leg as a separate component as in the related art, and the power supply unit 3 is positioned below the lower case 1. Since it moves, the power supply unit 3 does not get in the way, and the upper case 2 can be opened to a sufficient angle, for example, about 180 °.

[Third Embodiment] Next, a second embodiment of the portable electronic device of the present invention will be described with reference to FIGS. The same parts as those of the second embodiment shown in FIGS. The portable electronic device includes a link mechanism 30 and a cam mechanism 31.
Has a structure different from that of the second embodiment, and the other structure is substantially the same as that of the second embodiment. That is, the link mechanism 30 includes a first link member 32 and a second link member 33 as shown in FIGS.

As shown in FIGS. 22 to 28, the first link member 32 has one end disposed between the lower projecting portion 5b of the lower case 1 and the upper projecting portion 5a of the upper case 2, and The other end is rotatably mounted on the shaft 5c of the power supply 3 as shown in FIGS.
And is rotatably mounted by a mounting shaft 34. As shown in FIG.
The first link member 32 is configured to be urged in a counterclockwise direction by a torsion spring 35 attached to the power supply unit 3 to pull up the power supply unit 3. In this case, the torsion spring 35 is set to such a spring force that the upper case 2 stops at an arbitrary rotation position when the upper case 2 is rotated in the opening and closing direction about the shaft 5c of the hinge 5. ing. Also,
The second link member 33 is, as shown in FIGS.
A concave portion 36 having one end provided on the lower surface of the rear part of the lower case 1
And the other end is rotatably mounted on the lower front side of the power supply unit 3 by a shaft 33b. The driven cam unit, which will be described later, is located at a position located on the lower case 1 side. 39 is provided.

As shown in FIGS. 30 and 31, the cam function 31 includes a driving cam 38 which rotates via a gear train 37 which rotates in accordance with the opening and closing operation of the upper case 2, and a driving cam 38 which rotates with the rotation of the driving cam 38. And a driven cam portion 39 for rotating the second link member 33. The gear train 37 is shown in FIG.
As shown in FIG.
A gear 40, a second gear 42 attached to a gear shaft 41 provided in the lower case 1, and an intermediate gear 43 meshing with and rotating with the first and second gears 40 and 42, respectively.
The first gear 40 rotates in conjunction with the opening / closing operation of the upper case 2, and the rotation is transmitted to the second gear via the intermediate gear 43.
The transmission is transmitted to the gear 42, whereby the second gear 42 is configured to rotate.

As shown in FIGS. 31 and 32, the drive cam 38 is formed in a substantially spiral shape in which the radius of curvature of the outer peripheral surface gradually changes. It is configured to rotate with the gear 42. The driven cam portion 39 is provided substantially in the shape of a mountain on an upper portion of the second link member 33 on the side of the lower case 1, and with the outer peripheral surface of the driving cam 38 abutting on the upper end surface thereof, with the rotation of the driving cam 38. The second link member 33 is configured to rotate about a shaft 33 a of the second link member 33.
In this case, the driven cam portion 39 is formed on a first inclined curved surface 39b in which the right side is sharply inclined from the vertex 39a.
The left side from a is formed on a second inclined curved surface 39c that is gently inclined, and is configured to always contact the outer peripheral surface of the drive cam 38 by a torsion spring 35 that urges the power supply unit 3 to pull up.

By the way, as shown in FIG. 32A, when the upper case 2 is in the initial state where the upper case 2 overlaps with the lower case 1, the driving cam 38 is in contact with the driven cam portion 39. Followed cam portion 3 of two link member 33
9, the outer peripheral surface of the drive cam 38 having a short radius of curvature abuts on the first inclined curved surface 39 b of the driven cam portion 39 and the upper end portion of the second link member 33 located on the left side thereof. That is, in the initial state shown in FIG. 32A, the drive cam 38 is formed such that the radius of curvature of the substantially semicircular portion of the outer peripheral surface located on the side of the second link member 33 gradually increases counterclockwise. The radius of curvature of the remaining substantially semicircular portion of the outer peripheral surface located on the side opposite to the second link member 33 from the reference position P indicated by the arrow in FIG.

Therefore, when the upper case 2 is rotated with respect to the lower case 1 and gradually opened, the drive cam 38 shown in FIG.
As shown in FIGS. 2 (b) to 32 (d), the driving cam 38 rotates clockwise.
32B and FIG.
As shown in (c), since the radius of curvature of the driving cam 38 gradually increases, the outer peripheral surface of the driving cam 38
9 to the upper side, the drive cam 38 is almost 90 °
When rotated, the driven cam portion 39 reaches the vertex 39a from the first inclined curved surface 39b. The driving cam 38 is 90 °
32C and FIG.
As shown in (d), since the radius of curvature of the drive cam 38 is the same, the outer peripheral surface of the drive cam 38 climbs over the vertex 39a of the driven cam portion 39 and reaches a predetermined position on the second inclined curved surface 39c. The drive cam 38 idles without moving from a predetermined position.

In such a portable electronic device, when used, the upper case 2 is overlapped on the lower case 1 and closed in advance, so that the drive cam 38 is used as shown in FIG. Is in contact with the first inclined curved surface 39b of the driven cam portion 39 and the upper end of the second link member 33 located on the left side thereof, so that the outer peripheral surface of the driven cam portion 39 resists the spring force of the torsion spring 35. When the upper case 2 is rotated and opened about the hinge 5, the first gear 40 of the gear train 37 rotates with the opening operation of the upper case 2, and this rotation is performed via the intermediate gear 43 and the second gear 42. The rotation is transmitted to the second gear 42 and the second gear 42 rotates, and the driving cam 38 rotates clockwise with the rotation of the second gear 42.

At this time, as shown in FIG. 32 (b), when the driving cam 38 rotates about 45 °, the radius of curvature of the outer peripheral surface of the driving cam 38 gradually increases, so that the outer peripheral surface of the driving cam 38 abuts. The portion is the first inclined curved surface 39 of the driven cam portion 39.
It moves to the upper side along b, and pushes down the driven cam portion 39. As a result, the second link member 33 rotates clockwise around the shaft 33a on the lower case 1 side to push down the power supply unit 3. Thereafter, the upper case 2 is further rotated and opened, and as shown in FIG.
When rotated, the reference position P indicated by an arrow on the outer peripheral surface of the drive cam 38 becomes a contact portion, and this contact portion is
9, the drive cam 38 further pushes the driven cam portion 39 down. As a result, the second link member 33 further rotates clockwise to further push down the power supply unit 3, so that the lower case 1 tilts forward and accordingly, the keyboard unit 6 also tilts.

Then, the upper case 2 is further rotated and opened, and as shown in FIG.
When the drive cam 38 rotates by 0 °, the contact portion of the outer peripheral surface of the drive cam 38 goes over the vertex 39a of the driven cam portion 39, but the radius of curvature of the outer peripheral surface of the drive cam 38 is almost the same as when the drive cam 38 rotates 90 °. Because of the size, the driving cam 38
The contact portion of the outer peripheral surface of the second inclined curved surface 3 of the driven cam portion 39
9c, and the drive cam 38 idles in this state. For this reason, even if the drive cam 38 rotates by 90 ° or more, the second link member 33 hardly rotates, and the power
Becomes the most depressed state. As a result, FIG.
As shown in FIG. 28 and FIG. 28, the lower case 1 is inclined most forward and downward, and accordingly, the keyboard 6 is inclined, and the upper case 2 is opened by about 180 ° with respect to the lower case 1.

In this state, the upper case 2 is rotated in the closing direction, and as shown in FIG.
Is rotated about 135 ° from the initial state, the radius of curvature of the outer peripheral surface of the drive cam 38 is 90 ° of the drive cam 38.
Since the rotation is the same size as the above rotation, the contact portion of the outer peripheral surface of the drive cam 38 is the second inclined curved surface 39c of the driven cam portion 39.
Idle in a state where it is located at a predetermined position. Therefore, the upper case 2 is opened at a predetermined angle with the lower case 1 inclined most forward and downward. At this time, since the contact portion of the drive cam 38 is located at a predetermined position on the second inclined curved surface 39c over the apex 39a of the driven cam portion 39, the power source portion 3 is pulled up by the spring force of the torsion spring 35. However, the second link member 33 does not operate, and the lower case 1 maintains the state in which the lower case 1 is inclined most forward. Therefore, the portable electronic device can be used favorably.

When the upper case 2 is rotated in the closing direction toward the lower case 1, the driving cam 38 rotates in the opposite direction (counterclockwise) and the first link member is rotated by the torsion spring 35. 32 is pushed up to pull up the power supply unit 3, and accordingly, the second link member 33 is urged in a direction of contacting the outer peripheral surface of the drive cam 38, and the second link member 33 is rotated with the rotation of the drive cam 38. 33 rotates counterclockwise around a shaft (not shown) on the lower case 1 side and returns to the initial state.

As described above, also in this portable electronic device, when the upper case 2 is rotated around the hinge 5 and closed, the upper case 2 overlaps the lower case 1 as in the second embodiment. Since the power supply unit 3 is disposed on the rear end surfaces of the lower case 1 and the upper case 2 without protruding up and down by the link mechanism 30, the power supply unit 3 can be compactly carried. At this time, the first link member 32 does not project above the upper case 2 and the lower projecting portion 5
b and the upper projecting portion 5a, and in the cutout recess 18 of the power supply portion 3, and without the second link member 33 projecting below the lower case 1, the concave portion 3 of the lower case 1
6, the link mechanism 30 does not become an obstacle, and can be carried easily.

In this portable electronic device, when the upper case 2 is opened, the cam mechanism 31 operates in conjunction with the opening, and
Since the link mechanism 30 moves the power supply unit 3 toward the lower side of the rear end of the lower case 1 by the cam mechanism 31,
The power supply unit 3 can be used as a leg. For this reason, the keyboard unit 6 can be automatically tilted by opening the upper case 2 without the need for a separate leg as in the related art, and the power supply unit 3 is connected to the lower case 1.
, The power supply unit 3 does not interfere, and the upper case 2 can be opened to a sufficient angle, for example, about 180 °.

In the first to third embodiments, a laptop personal computer has been described as a portable electronic device. However, the present invention is not limited to this, and a portable electronic device such as an electronic organizer, an electronic dictionary, or a mobile device may be used. It can be widely applied to equipment.

[0041]

As described above, according to the present invention, when the upper case is superimposed on the lower case, the power supply is located at the rear end of each case, so that the portable device can be compactly carried. In addition, when the upper case is opened above the lower case in this state, the link mechanism moves the power supply unit directly or via the cam mechanism toward the lower side of the rear end of the lower case in conjunction with this. The part can be used as a leg. Therefore, the keyboard part can be automatically tilted by opening the upper case without the need for a separate leg part as in the related art, and when the upper case is opened even when the power supply part is formed large. In addition, the power supply unit is not obstructed, and the upper case can be opened at a sufficient angle, for example, about 180 °. In this case, when the lower case and the upper case are opened at almost 180 °, the user can operate the keyboard while viewing the display unit during use, and the other person also looks at the display unit from the opposite side at the same time. Therefore, a convenient product can be obtained.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a portable electronic device according to a first embodiment of the present invention when being carried.

FIG. 2 is a plan view of FIG. 1;

FIG. 3 is a side view of FIG. 2;

FIG. 4 is an external perspective view of a state where the upper case of FIG. 1 is opened at a predetermined angle.

FIG. 5 is a side view of FIG. 4;

FIG. 6 is an external perspective view showing a state where the upper case of FIG. 4 is opened at almost 180 °.

FIG. 7 is a plan view of FIG. 6;

FIG. 8 is a side view of FIG. 7;

FIG. 9 is an external perspective view of a portable electronic device according to a second embodiment of the present invention when being carried.

10 is a plan view in which a part of FIG. 9 is broken.

FIG. 11 is a side view of FIG. 10;

FIG. 12 is an external perspective view showing a state where the upper case of FIG. 9 is opened at a predetermined angle.

FIG. 13 is a side view of FIG.

FIG. 14 is an external perspective view showing a state where the upper case of FIG. 12 is opened at almost 180 °.

FIG. 15 is a plan view of FIG. 14;

FIG. 16 is a side view of FIG.

FIG. 17 is an enlarged perspective view of a main part showing a state when the upper case starts to be opened in the state of FIG. 9;

18 is an enlarged perspective view of a main part showing a state in which the upper case is slightly opened in the state of FIG. 17;

FIG. 19 is an enlarged perspective view of a main part showing a state in which the upper case is further opened slightly in the state of FIG. 18;

FIG. 20 is an enlarged perspective view of a main part showing a state where the upper case is opened at almost 180 ° in the state of FIG. 19;

21 shows the mounting structure of the first link member of FIG. 9 and the operating states of the first and second cam portions thereof. FIG. 21 (a) is an enlarged cross-sectional view of a main part showing the mounting structure of the first link member. (B) is an enlarged view of a main part showing the engaged state of the first and second cam portions in the state of FIG. 17, and (c) is the first and second states in the state of FIGS. 18 and 19. FIG. 21D is an enlarged view of the main part showing the engaged state of the cam part, and FIG. 20D is an enlarged view of the main part showing the engaged state of the first and second cam parts in the state of FIG.

FIG. 22 is an external perspective view of a portable electronic device according to a third embodiment of the present invention when being carried.

FIG. 23 is a plan view of FIG. 22;

FIG. 24 is a side view of FIG. 22.

FIG. 25 is an external perspective view showing a state where the upper case of FIG. 22 is opened at a predetermined angle;

FIG. 26 is a side view of FIG. 25.

FIG. 27 is an external perspective view showing a state where the upper case of FIG. 25 is opened at almost 180 °.

FIG. 28 is a side view of FIG. 27.

FIG. 29 is an enlarged cross-sectional view of a main part showing a position of a torsion spring of the first link member as viewed in the direction of arrows AA in FIG. 23;

FIG. 30 is an enlarged cross-sectional view of a main part showing a portion of the gear train as viewed in the direction of arrows BB in FIG. 23;

FIG. 31 is an enlarged cross-sectional view of a main part showing a portion of the cam mechanism as viewed in the direction of arrows CC in FIG. 23;

FIG. 32 shows an operation state of the cam mechanism of FIG. 31;
FIG. 3B is a diagram showing a contact state between the drive cam and the driven cam portion in an initial state in which the upper case is closed. FIG. FIG. 3C is a diagram showing a contact state with the cam portion, FIG. 3C is a diagram showing a contact state between the drive cam and the driven cam portion when the drive cam is rotated by about 90 °, and FIG. The figure which showed the contact state of the drive cam and the driven cam parts in the state rotated by about 180 degrees, (e) when the drive cam is rotated by about 135 degrees and returned to the state rotated by about 135 degrees from the initial position after rotation. FIG. 4 is a diagram showing a contact state between a driving cam and a driven cam section of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lower case 2 Upper case 3 Power supply part 4, 15, 30 Link mechanism 5 Hinge part 6 Keyboard part 7 Display part 8 Arm part 9 Guide groove 10 Connecting pin 16, 32 1st link member 17, 33 2nd link member 22nd 1 cam portion 23 second cam portion 31 cam mechanism 37 gear train 38 drive cam 39 driven cam portion

Claims (3)

[Claims] 1. A lower case having a keyboard portion, an upper case having a display portion and rotatably attached to the lower case and overlapping the lower case, and the upper case overlapping the lower case. A power supply unit located at a rear end side of each of the lower case and the upper case when in a closed state; and a rear end portion of the lower case in conjunction with an opening operation of the upper case. A portable electronic device comprising: a link mechanism for moving the portable electronic device downward. 2. A lower case having a keyboard portion, an upper case having a display portion and rotatably attached to the lower case and overlapping the lower case, and the upper case overlapping the lower case. A power supply unit located at a rear end side of each of the lower case and the upper case when in a closed state; a cam mechanism that operates in conjunction with opening and closing operations of the upper case; and opening the upper case. A portable electronic device comprising: a link mechanism that sometimes moves the power supply unit toward a lower side of a rear end of the lower case in conjunction with an operation of the cam mechanism. 3. The portable electronic device according to claim 1, wherein the lower case and the upper case are opened at approximately 180 °.