WO2007129470A1 - Portable information terminal device - Google Patents

Abstract

There is provided a portable information terminal device that is multifunctional and also easy-to-use, for example, in that the display screen is changed to be horizontally long from vertically long to fit a case used and the key operation portion is changed from one for portable use to one for personal computer use. The portable information terminal device has a first case (10) and a second case (30), which are coupled by a rotational member (50) and a shaft member (60). The first case has a display (11) on the front side surface and a camera lens (15) on the rear side surface. The second case has a portable-telephone-use key operation portion (31) on the front side surface and a personal-computer-use key operation portion (33) on the rear side surface. The rotational member (50) comprises two shafts, a first shaft (51) and a second shaft (52), which are orthogonal to each other. The first shaft has the function of positioning the display (11) at the center of the second case when the first case (10) is rotated by 90 degrees along the front side surface of the second case (30). The second shaft has the function of changing the angle of the first case (10) with respect to the second case (30). The shaft member (60) enables the first case (10) to slide upward with respect to the second case (30) along the second shaft (52).

Description

 Specification

 Portable information terminal device

 Technical field

 The present invention relates to a portable terminal device suitable for application to, for example, a mobile phone, a PHS phone (PHS: Persona Handy-phone System), a PDA device (PDA: Persona D italy assistant), Mobile terminals that can change to optimal positioning according to the usage status of functions such as watching TV broadcasts, watching video content such as mobile movies, sending and receiving e-mails, camera imaging, personal computers, game machines, etc. Relates to the device.

 Background art

 [0002] Today's mobile terminal devices have various functions such as a call function, an e-mail (mobile mail) transmission / reception function, an Internet site browsing function, a videophone function, a camera imaging function, and a personal computer function. Is provided. Also, television broadcasts can be viewed with the reception function of television broadcasts. For this reason, it is desired that the display screen unit, the key operation unit, the camera device unit, and the like be able to perform each function comfortably according to their usage.

 [0003] In response to this demand, Japanese Patent Application Laid-Open No. 2 0 0 5 1 3 0 2 1 9 proposes a mobile terminal device having three positions. The portable terminal device includes a first casing unit including a key operation unit provided on the main surface portion close to one end side, a force camera unit provided on the other end side, and the first casing unit. It has substantially the same size as the housing part, and is supported so as to be able to perform a sliding operation in a state of being overlapped with the first housing part, and is opposite to the surface part opposite to the main surface part of the first housing part. And a second housing part provided with a display screen part on the main surface part.

[0004] In addition to the first and second housing parts, the portable terminal device has at least the second housing part slid to the other end side of the first housing part. In this case, the second housing portion is fixed at the position where the operation key portion is exposed, so that the second housing portion overlaps the entire first housing portion. Slide The second housing portion is fixed at a position covering the operation key portion and the camera portion, and the second housing portion is attached to the first housing portion. When sliding to one end side, the second housing portion is fixed to the second housing portion at a position where the camera portion is exposed. It has a slide position fixing means for fixing.

 [0005] In this portable terminal device, the second casing can be operated by sliding with respect to the first casing, and the second casing can be used in addition to the first casing. When sliding to the end side, the slide position fixing means fixes the slide position of the second casing at the “first position” where the operation key part is exposed. In addition, when the second casing is slid so as to overlap the entire first casing, the slide position fixing means covers the operation key section and the camera section. To fix the slide position of the second casing. In addition, when the second casing is slid to one end side of the first casing, the slide position fixing means is in the “third position” where the camera unit is exposed. Fix the part.

 [0006] In the "first position", since the key operation unit can be exposed, it is possible to operate the key operation unit to perform mail input, voice call, and the like. In the “second position”, the key operation unit and the camera unit are covered with the first casing, so that the key malfunctions and can be protected, and the portable terminal device is connected to the second casing unit. The size can be reduced to the size (= the size of the first casing) and it is easy to carry.

In the “third position”, the camera unit can be exposed, and thus it is possible to capture a desired subject using the force lens unit. In addition, since the camera unit can be used as a support leg for the mobile terminal device, the display screen unit can be tilted upward and the television broadcast and video content can be viewed on a desk. In addition, a key operation unit is provided on the main surface of the first housing in the vicinity of one end of the first housing, and a display screen unit is provided on the main surface of the second housing. Yes. For this reason, the main surface portion of the second casing portion can be almost entirely used as a display screen portion, and a large display portion can be provided. [0007] In addition, in the patent publication of Japanese Patent Laid-Open No. 2 0 1-3 1 3 7 0 5, a key row dedicated to a mobile phone is provided on the keypad side of a notebook personal computer that can be folded and opened, while the personal computer display A display unit dedicated to mobile phones is provided on the screen side. As a result, a personal computer and a mobile phone were separately carried separately, and both were connected and used as needed via a connection cable. However, since they are combined, they can be carried together in a combined state. Therefore, it is possible to communicate directly via the Internet with the provider mobile phone switching center as a provider, and since both devices can be used independently, the usability is significantly improved. In addition, mobile phone data can be transferred to the personal computer side, and personal computer data can also be transferred to the mobile phone side, which improves usability by compensating for the shortcomings of both devices.

 [0008] Patent Document 1: Japanese Patent Laid-Open No. 2 005 _ 1 3 0 2 1 9

 Patent Document 2: Japanese Patent Laid-Open No. 2 0 0 1 _ 3 1 3 7 0 5

 Disclosure of the invention

 Problems to be solved by the invention

 [0009] In the conventional portable terminal device disclosed in Japanese Patent Application Laid-Open No. 2 0 0 5 _ 1 3 0 2 1 9, when a mobile mail is transmitted, the display screen is vertically long. There is no comfortable mail input. In addition, when watching television broadcasts on a desk or the like, the mobile terminal device is stabilized with the camera unit as a support leg, but the key operation unit for television broadcast channel selection and volume adjustment is hidden and provided separately. There is a need.

[0010] In addition, when performing camera imaging with a self-timer, it is necessary to place the side surface of the mobile terminal device in a horizontal place, but the width of the side surface is narrow, so stability is lacking. If the camera unit is used as a support leg to ensure stability, it will be difficult to align the optical axis of the camera lens with the subject. In addition, regarding the e-mail transmission function, when creating a long e-mail, the input from the cell phone key operation unit is inferior to the key operation unit for a personal computer, and it is difficult to create an e-mail quickly. is there. [001 1] Also, in a mobile phone incorporating a personal computer disclosed in Japanese Patent Application Laid-Open No. 2 0 0 1-3 1 3 7 0 5, a key dedicated to the mobile phone is placed on the keyboard side of the notebook computer. While a row is provided, a display unit dedicated to mobile phones is provided on the PC display screen side. Therefore, not only does the keyboard and display screen become large and it becomes difficult to carry, but for example, one-handed input is not possible by holding the mobile phone with one hand.

 [0012] Further, when the content distributed for a mobile phone is for a portrait screen

It is not necessarily comfortable if the display screen of the portable terminal device is landscape only.

[0013] In addition, when entering a phone number from the key operation unit to make a call, the mobile terminal becomes T-shaped on the landscape screen and forms an extra space, making it suitable for calls in crowded places. Issues such as

[0014] The present invention has been made in view of the above-described problems, and provides a mobile terminal device that can be further optimized in accordance with the use case of the device configuration. Objective.

 Means for solving the problem

 [0015] The invention of claim 1 includes a first housing having a display portion on a front surface, a second housing having a key operation portion below the front surface, and the first housing on the front surface. When the first case is rotated and placed 90 degrees along the front side surface of the second case, the key operation part is exposed so that it can be operated. The first housing or its display section is located approximately in the center in the left-right direction of the second housing, and the first housing can change the angle with respect to the front surface of the second housing. .

[0016] The invention of claim 2 includes a first housing having a display unit on the front surface, a second housing having a key operation unit below the front surface, and a first housing on the front side. With the housing facing the back side, the rotating member having two axes is arranged in an overlapping manner. The first axis of the rotating member has a center line in the vertical direction of the surface on the front side of the second housing, and the position is the first position. 1 When the vertical length of the case or its display is a, and the length of the second case in the left-right direction is b, the first case or display when the first case is closed Take a point on the side that is a distance of (a-b) 2 below the intersection of the upper side and either side A straight line drawn from the point to the lower side at an angle of 45 degrees with respect to the side, and an angle of 45 degrees with respect to the side from the intersection of the upper boundary line of the key operation unit and the side And the second axis is located at the end of the side and is parallel to the side.

 [0017] According to the invention of claim 3, the first housing having the display portion on the front surface and the second housing having the key operation portion below the front surface are moved up and down by a rotating member having two axes. The first axis of the rotating member has a center line in the vertical direction of the surface of the second housing, and its position is either on the left or right of the upper boundary line of the key operation unit of the second housing. A point on a straight line drawn from the intersection with the side to the upper side at an angle of 45 degrees with respect to the side, in the vicinity of the intersection, and the second axis of the intersection of the first housing It exists in the edge part of the side of a certain side, It is characterized by being parallel to the said side.

 [0018] The invention of claim 4 is such that when the second casing or the sliding member of the second casing is moved downward relative to the first casing, the key operation section can be operated. It is characterized by exposure.

 [0019] The invention of claim 5 is characterized in that the second shaft of the rotating member is slidable with the shaft member of the first housing.

 [0020] The invention of claim 6 is characterized in that the second casing has a member that slides up and down, and has a key operation portion below the surface of the member.

 [0021] The invention of claim 7 is characterized in that a camera lens portion is provided on the back surface of the first casing.

 [0022] The invention of claim 8 is characterized in that a personal computer key operation section is provided on the back surface of the second casing.

[0023] In the invention of claim 9, a third housing having substantially the same shape as the second housing in a plan view is mounted on the back side of the second housing, and is provided above the second housing. It is characterized by rotating 180 degrees from the superposition state around a third axis parallel to the upper side.

[0024] The invention of claim 10 is characterized in that when the third casing is rotated 180 degrees, the second casing and the second casing

It is characterized by the fact that the operation key pattern on the 3 chassis is a full keyboard for a PC. [0025] According to the invention of claim 11, the third housing having a shape substantially equivalent to the second housing in a plan view is divided into two and mounted on the back side of the second housing. Rotate each other 180 degrees from the superposition state around a third axis parallel to the upper side provided above the second casing and a fourth axis parallel to the lower side provided below the second casing. It is characterized by movement.

 [0026] The invention of claim 12 is the second housing and the third housing when the third housing divided into two is rotated 180 degrees from the overlapping state around the fourth axis. This is characterized by the fact that the operation key pattern is a full PC keyboard.

 [0027] The invention of claim 13 is mainly assumed to be used only as a mobile phone, and is not intended for use as a personal computer.

 [0028] The first housing protrudes from the top of the second housing and is arranged in an overlapping manner. When the first housing is rotated 90 degrees, the horizontal position of the display unit is approximately that of the second housing. Located in the center, a part of the lower key of the key operation section of the second casing and the camera lens section on the back side of the first casing are always exposed.

 The invention's effect

 [0029] As described above, although the portable information terminal device of the present invention has a simple structure, the device configuration can be optimized according to various use cases. An easy-to-use and easy-to-read screen portable information terminal device.

 Brief Description of Drawings

 [0030] FIG. 1 is a plan view during the first positioning in the first embodiment.

 [Figure 2] Front view of Figure 1

 [Fig.3] Cross section along line A_A in Fig.1

 [Fig.4] Cross section along line B_B in Fig.1

 [Figure 5] Plan view during second positioning

 [Figure 6] Right side view of Figure 5

 [Fig.7] Rear view of Fig.5

[Fig.8] Front view during third positioning Fig. 9] Left side view of Fig. 8

Figure 10 Right side view of Figure 8

Fig. 11 Plan view during 4th positioning

Fig. 12 Front view of Fig. 11

Fig. 13 Fig. 11

Fig. 14 Front view of Fig. 1 3

Fig. 15 Two views of the fifth positioning

Fig. 16 Top view when closed in the second embodiment

Fig. 17 Front view of Fig. 16

Fig. 18 Plan view when the second embodiment is open

Fig. 19 Three-side view when closed in the third embodiment

Fig. 20 Fig. 19 Plan view of the second positioning in Fig. 9 Fig. 21 Fig. 19 Plan view of the fourth positioning in Fig. 9 Fig. 22 Fig. 9 Three-side view of the 9 when fully open

Figure 23 Figure 1 Other examples

Fig. 24 Three-side view when closed in the fourth embodiment

Fig. 25 Three-side view of the fourth embodiment when opened

Fig. 26 Three-side view of the fifth embodiment when closed

Figure 27 Cross section along line A_A in Figure 26

Fig. 28 Two-side view when 90 ° rotation is opened in the fifth embodiment Fig. 29 Three-side view when the slide mechanism type 2 is closed

Figure 30 Cross section along line A_A in Figure 29

Fig. 31 B-B cross section of Fig. 29

Fig. 32 C-C cross section of Fig. 29

Fig. 33 Two-side view of slide mechanism type 2 when sliding Fig. 34 Three-side view of slide mechanism type 3 when closed

Fig. 35 A-A line cross section of Fig. 3 4

Fig. 36 B-B cross section of Fig. 3 4 [Fig.37] C_C sectional view of Fig.34

 [Fig.38] Two-sided view of sliding mechanism type 3 during fifth positioning [Fig.39] Two-sided view of sliding mechanism type 3 during fourth positioning [Fig.40] No sliding mechanism 2-side view when the structure is closed

[Fig.41] AA line cross section of Fig.40

[Fig.42] B-B sectional view of Fig.

Explanation of symbols

1 Personal digital assistant

2 Top side of display

3 Right side of second housing

 3-1 intersection

3-2 Intersection

 4 Intersection

 5-1 straight line

5-2 Straight line

 6 Upper border of keyspace

7 Front side of first housing

8 Front side of second housing

 9 Outermost circumference of the second axis

 1 0 1st housing

 1 1 Display

 1 2, 1 2— 1, 1 2— 2 Speaker

 1 3, 1 3-1, 1 3—2 Microphone

 1 4, 1 4— 1, 1 4— 2 Operation keys

 1 5 Camera lens

 1 6 Light emitter

 3 0 Second housing

3 1 Key for mobile phone 3 2 Microphone

 3 3 PC key operation section

 3 4 sides

 5 0 Rotating member

 5 1 Axis 1

 5 2 Axis 2

 5 3 cavity

 5 4 cavity

 5 5 cavity

 5 6, 5 7 Protruding part

 5 8 cavity

 6 0 Shaft member

 6 1 slit

 6 2, 6 3 edge

 7 0 Cable

 9 0 Ground structure

 2 0 1 Portable information terminal device of the second embodiment

 3 0 1 Mobile information terminal device according to the third embodiment

 4 0 1 Portable information terminal device of the fourth embodiment

 5 0 1 Mobile information terminal device of the fifth embodiment

 6 0 1 Slide Type 2 personal digital assistant

 7 0 1 Slide Type 3 personal digital assistant

 8 0 1 Personal digital assistant not including slide mechanism

 BEST MODE FOR CARRYING OUT THE INVENTION

 Hereinafter, an embodiment when the present invention is applied to a mobile phone will be described in detail with reference to the drawings.

[0033] ===== First Embodiment =====

A first embodiment of the present invention will be described with reference to FIGS. <About the basic structure>

 FIG. 1 is a plan view of the portable information terminal device 1 in a closed state. Figure 2 shows the front view. 3 is a cross-sectional view taken along line A_A in FIG. 4 is a cross-sectional view taken along line B_B in FIG.

 The portable information terminal device 1 includes a first housing 10, a second housing 30, and a rotating member 50 that connects them. The first casing 10 and the second casing 30 have substantially the same shape in plan view, and the first casing 10 and the second casing 30 are in the first casing 10 when closed. With the second casing 30 on the back side.

 [0035] The rotating member 50 is composed of two shafts. The first shaft 51 of the rotating member is perpendicular to the surface on the front side of the second housing 30, and the second shaft 52 is at the end of either the left or right side of the first housing 10. It is parallel to that side. In the following description, the case where the second shaft 52 is located at the end of the right side 3 of the first housing 10 will be described as an example. The same holds true if the left and right sides are reversed.

 First, how to determine the position of the first axis 51 will be described in detail. The purpose of determining this position is to satisfy the following two conditions. The first condition is that when the first casing 10 is rotated 90 degrees clockwise and opened, the display section 11 of the first casing 10 becomes a landscape screen as shown in FIG. It is located approximately in the center of the case 30 in the left-right direction. The second condition is that the key space h is exposed so that the cellular phone key operation unit 31 located below the front side of the second housing 30 can be operated. If these two conditions can be met, the display unit 1 1 will be a large horizontal screen that is convenient for reading texts on TV, and at the same time, the arrangement will be the key operation unit for mobile phones. It is the center position in the left and right direction, just above 3 1 and with respect to the mobile phone key operation unit 3 1. Therefore, it is convenient to look at the display while pressing the key.

[0037] In the following, the conditions that hold are described. First, for that purpose, it is assumed that the first axis is at the target position, and what kind of property it has is explained. In FIG. 1, the vertical length of the display unit 11 of the first casing 10 is a, and the horizontal length of the second casing 30 is b. Draw a straight line 5 _ 1 that forms an angle of 45 degrees with the right side 3 of the first housing 10 from the first axis 51 in the upper right direction, and the intersection point with the right side 3 of the second housing 30 is 3 _ 1 . The vertical and left / right distances between the intersection 3_1 and the first axis 51 are the same, and this is X. If the intersection of the upper side 2 of the display unit 1 1 and the right side 3 of the second housing 30 is 4, and the distance between this intersection 4 and the intersection 3_1 is Y, the position of the first axis 51 is relative to the intersection 4. Y + X in the downward direction and the position displaced by X in the left direction.

 Next, assume that the first housing 10 is rotated 90 degrees clockwise from the state of FIG. 1 to the state of FIG. At this time, if the amount of protrusion to the right side of the display portion 11 of the first case 10 relative to the second case 30 is f and the amount of protrusion to the left is g, the first shaft 51 before rotation in FIG. Since the distance to the top side of the display unit 1 1 does not change before and after the rotation

Y + X = f + X ie

 f = Y (1)

 Since the total amount of protrusion to the left and right is equal to a _ b

 g + f = a-b

 g = a- b- f = a- b- Y (2)

 When the display unit 11 is in the center of the second housing, f = g holds.

 (1) From (2)

 Y = a-b-Y (3)

 Y = (a-b) 2 (4)

 As described above, when the display unit 1 1 is positioned at the center of the second housing 30, it is lowered by (a_b) 2 downward from the intersection 4, and if a line is drawn from that point to the lower left 45 degrees direction, It can be seen that this point is a desired point.

[0040] Next, a method for securing the space h in which the cellular phone key operation unit 31 is arranged, which is the second condition, will be described. In FIG. 5, the boundary line 6 above the space h is defined as the lower side of the first housing 10 after rotation. Upper boundary 6 of space h and second housing Assuming that the intersection of the right side 3 of 3 0 is 3 _ 2 in Fig. 1, the distance between the first axis 5 1 and the right side 3 is X, so this is the first case rotated 90 degrees The distance from the bottom edge 6 of 1 0 is also X. That is, the first axis 51 is on the line 5-2 drawn through the intersection 3_2 to the upper left side of the second case 30 by 45 degrees to the upper left.

[0041] In summary, the point that satisfies the two conditions is that the first axis 5 1 is obtained as the intersection of the line 5-1 and the line 5_2. In other words, the lower side of the display unit 1 1 2 and the right side 3 of the second housing 3 0 are lowered by (a _ b) 2 from the intersection 4, and from that point on the side 3 of the second housing 30 On the other hand, a line drawn in the direction of the lower left 4 5 degrees and the intersection 3 _ 2 between the upper boundary line 6 of the space h for placing the cellular phone key operation unit 3 1 and the right side 3 of the second housing 30 The intersection of the lines drawn 45 degrees to the upper left with respect to the right side 3 of the second housing 30 is the position of the first axis 51.

 [0042] However, although it is the first axis 51 obtained as described above, it is not always true if there is a restriction on strength. For example, in FIG. 3, the cross section of the rotating member 50 is displayed, but the distance X between the first shaft 51 and the right side 3 of the second housing 30 is the bearing portion 53 of the first shaft 51. Where d is the diameter of the wall and the thickness of the thick part between the bearing 53 and the right side is t.

 X = d / 2 + t (5)

 It becomes. Since both d and t are variables that are disadvantageous in strength as they are smaller, X needs to have a certain size. If, as a result of determining the first axis 51 by the method described above, X has a dimension that does not provide sufficient strength, one method is to arrange the key operation unit 31 for the mobile phone. The necessary X can be secured by reducing the space h slightly. If the space h cannot be reduced, the other requirement is to slightly relax the condition that the display unit is positioned exactly in the center in the left-right direction with respect to the second housing 30. It is to secure. This method will be described in detail later in the second embodiment.

[0043] In the above description, the case where the display unit 11 of the first casing 10 is located in the center in the left-right direction of the second casing 30 has been described, but the entire first casing 10 is the second one. Case 3 0 The position of the first axis 51 can be determined in exactly the same way when it is located at the center in the left-right direction.

 In addition, the left and right dimensions b of the second housing 30 are used as the reference for determining the center position in the left and right direction. However, if the key operation unit is arranged in a biased manner in the second housing 30 The left and right dimensions b 1 of the key operation unit may be used as a reference.

 Next, how to determine the position of the second shaft 52 will be described in detail below. The purpose of determining the position of the second axis 52 is to allow the first housing 10 to take several angles with respect to the front surface 8 of the second housing 30.

 [0045] —The first angle is such that when the first casing 10 is opened 90 degrees clockwise around the first axis 51 as shown in FIG. 2 Standing up at an angle 0 1 around the second axis 52 as shown by a two-dot chain line in FIG. In this way, the display unit 1 1 on the front side surface 7 of the first housing 10 is input with one hand to the cellular phone key operation unit 3 1 below the front side surface 8 of the second housing 30. When you do it will be easier to see with some angle. A specific angle value is about 10 to 30 degrees.

 [0046] The second angle is set on a desk or the like as shown in FIG. 8 to FIG. 10 to watch the TV on the display unit 11 or the camera on the back side of the first housing 10. This is when the lens 15 is used to shoot using a timer. At this time, it is only necessary to rotate by 0 2 around the second axis 52 from the state of FIGS. 5 and 6, that is, the state of the two-dot chain line of FIG. A specific value of 0 2 is appropriate around 60 ° for television and around 90 ° for shooting.

[0047] The third angle is as shown in Fig. 11 to Fig. 14 with the key operation unit 3 3 for the personal computer arranged on the back surface of the key operation unit 3 1 for the mobile phone of the second housing 30. This is the case when using both hands to input. At this time, it is only necessary to rotate around the second shaft 52 by 0 3 or 0 4 from the state of FIG. 1, ie, the folded state of the two-dot chain line of FIG. 12 or FIG. When the PC key operation section 3 3 and the display section 1 1 plane can be parallel, it can be rotated by 180 degrees as shown in 0 3 in Fig. 12. However, the display section is slightly easier to see. Angle that stands up slightly with respect to the key operation part for PC If it is attached, it is desirable to rotate from about 1 90 degrees to 2 10 degrees as shown in 0 4 in FIG.

 In order to be able to take the above three angles, it is desirable that the first housing 10 can be rotated up to about 2 10 degrees from a state in which it is folded around the second shaft 52. Therefore, in the example of FIG. 3, the second shaft 52 is at the right end of the first housing 10 and the shape of the outermost periphery 9 is the front surface 7 and the back surface of the first housing 10 and the back surface. The cylinder is in contact with the right side 3. The cross-sectional shape of the right end of the first housing 10 is the same over the entire length. That is, the distances from the second axis 52 to the right side, front side and back side are k1, k2 and k3, respectively, and the distance between the second axis 52 and the front side of the second housing 30 is m.

 k1 = k2 = k3 <m

 By doing so, the first housing 10 can rotate the necessary angle without interfering with the second housing 30.

However, as can be seen in FIG. 11 and FIG. 12, the second housing 30 is approaching the display unit 11. That is, the interval n is small. Therefore, in FIG. 11, the corner on the display unit side of the second housing 30 is made easier to see by taking the surface 34.

[0050] Another method for making the display unit 1 1 easier to see is to reduce k 3 as shown in FIG. As shown in Fig. 1 3, the distance p between the display unit 1 1 and the second housing is shown in Fig. 1.

It becomes larger than n of 1, making it easier for the operator to see.

[0051] In the case of FIG. 14, k1 and k2 are not changed, and k3, k2 and k are decreasing forces.

All 3 may be reduced. That is, the entire first housing 10 may be thinned.

[0052] Regarding the position of the second axis, another embodiment other than the above will be described with reference to FIGS. 35 and 39. FIG. In Fig. 35, the second shaft 7 52 is located at the end of the right side of the first housing and is parallel to the right side, but more precisely the center position is the right side of the first housing 7 10. The surface and the fixing member 7 2 0 of the second housing and the right side surface of the slide member 7 3 0 are on the same line. In this case, when the first casing 7 1 0 is rotated 180 degrees around the second axis 7 52 2, the display becomes as shown in FIG. It is not hidden behind and is completely exposed.

 [0053] The position of the second axis has been described in two specific examples, but in reality, the position of the center line of the second axis is also established between the positions of the center lines of both. All of these are expressed as “the second axis is at the edge of the side of the first housing”.

 Next, a structure in which the second casing 30 is slid downward with respect to the first casing 10 and the key operation unit is exposed will be described with reference to FIGS. 15, 3, and 4. To do.

 [0055] The first housing 10 holds the shaft member 60 at the end portion on the right side of the first housing 10 so as to be rotatable at both end portions 62, 63, and the rotating member 50. The shaft member 60 is held in the cavity 55 of the second shaft 52 and can be slid along the shaft member 60. Accordingly, when the second casing 30 is slid downward with respect to the first casing 10 from the closed state of FIG. 1, the key operation unit 31 is exposed as shown in FIG.

 [0056] A wiring method between the first housing 10 and the second housing 30 in this case will be described below.

 The shaft member 60 has a slit 61 connecting the hollow portion 64 and the outside. The slit 61 may not be provided in the rotating part of both ends 6 2 and 63 of the shaft member 60. Protruding portions 5 6 and 5 7 of the rotating member 50 enter the slit 61. When the first housing 10 and the rotation member 50 are relatively rotated by the protrusions 5 6 and 5 7, the shaft member 60 is rotated together with the rotation member 50.

 [0057] Another role of the protruding portion 56 is to smoothly bend the cable 70 from the second housing to the hollow portion. Since the space 5 8 through which the cable 70 is passed is provided between the protrusions 5 6 and 5 7, the cable 70 passes through the space 5 4 → 5 8 → 64 and reaches the inside of the first housing 10. There is a cable reel (not shown) in the first casing 10 to wind up the slack of the cable 70 when the first casing 10 is sliding. Although the shaft member 60 and the rotating member 50 are rotated together by the protrusions 56 and 57 in FIG. 4, other methods may be used. For example, the cross-sectional shape of the contact portion may be non-circular.

[0058] In addition, a friction mechanism or a click mechanism (not shown) may be added to facilitate the holding of the position of the first casing 10 at a desired or predetermined position with respect to the second casing 30. desirable. Next, a structure in which the key operation unit is exposed when the key operation unit of the second case is slid downward with respect to the first case will be described with reference to FIGS. 29 to 33. .

 In this case, the second housing is composed of two members. One is a fixed member 6 3 0 connected to the first housing 6 1 0 via a rotating member 6 5 0, and the other is capable of sliding vertically with respect to this fixed member 6 3 0. This is a sliding member 6 2 0. The key operation unit 6 3 1 is disposed below the front side of the slide member 6 30. Therefore, when the key operation unit 6 3 1 in FIG. 29 is not exposed, when the key operation unit 6 3 1 is slid downward with respect to the first housing 6 1 0, the keys as shown in FIG. Operation unit 6 3 1 is exposed.

 [0061] Further details of the structure will be described. FIG. 30, FIG. 31, and FIG. 32 are cross-sectional views taken along lines A_A, BB, and CC, respectively, of FIG. 29. The fixing member 6 30 of the second casing is connected to the first casing 6 1 0 via a rotating member 6 5 0, and the sliding member 6 2 0 of the second casing 1 It is located between the casing 6 10 and the fixing member 6 3 0, and can be slid in the vertical direction with respect to the fixing member 6 3 0 by the slide guide mechanism 6 2 1.

 [0062] A wiring method between the members in this case will be described below. Necessary place is the first

 1 Between the housing 6 1 0 and the fixing member 6 30 of the second housing and between the fixing member 6 30 of the second housing 6 and the sliding member 6 2 0. The former is shown in Fig. 3 2 As shown in the figure, the cap 6 7 1 is passed through the space 6 5 5 inside the rotating member 6 5 0. One end thereof reaches the inside of the first housing 6 10 through the hole 6 11 1, and the other end reaches the inside of the fixing member 6 30 of the second housing through the space 6 58. In the latter case, as shown in FIGS. 30 and 31, a space 6 2 2 is provided between the fixing member 6 30 and the sliding member 6 2 0 of the second housing, and the cable 6 7 2 is passed therethrough. This detail is the same as in Fig. 37, which will be described later, and will not be described.

[0063] Similarly to the above, FIGS. 34 to 38 show other structures in which the key operation unit is exposed when the key operation unit of the second case is slid downward with respect to the first case. Use to explain. The difference from FIG. 29 to FIG. 33 is that the shape of the slide member 7 20 of the second housing is box-shaped so as to surround the fixing member 7 30. The However, it does not exist in the upper half of the front side where the rotating member 7 5 0 exists to avoid interference. As shown in FIG. 36, the key operation portion 7 3 1 is located on the front side of the slide member 7 20 of the second housing. The slide guide mechanism 7 2 1 exists on both sides of the fixing member 7 3 0 in the vertical direction.

FIG. 37 is a diagram showing a wiring method between the fixing member 7 30 and the sliding member 7 20 of the second housing. There is a space 7 2 2 between the two, there is a cable 7 7 2 force << in that space, and both ends are connected to each member. The cable 7 7 2 smoothly follows the sliding movement by bending it in the middle of the U-shape. As described above, when the sliding member 7 2 0 is slid downward with respect to the first housing 7 10 from the closed state in FIG. 34, the key operation unit 7 3 1 is as shown in FIG. Exposed to.

 [0065] に つ い て Relationship between various positioning and usage>

 The above is the description of the basic structure of the first housing 10, the second housing 30, the rotating member 50, and the shaft member 60. Next, the detailed structure and its use during each positioning are described in detail. Explained.

 [0066] First positioning

 1 and 2, the front surface 7 of the first housing 10 has a rectangular display portion 1 1, and a speaker 1 2 and operation keys 1 4 force << There is a microphone 13 on the opposite side. The second housing 30 overlaps the back side of the first housing 10. There are five main uses for this positioning.

 (1) When carrying

 -Because it has a compact shape, this positioning is convenient when carrying.

 (2) Receiving a phone call

 When a phone call comes in, it can be received and operated by operating the operation keys 14.

(3) Call from phone address book, call In this state, the mobile phone key operation unit is not outside and you cannot enter the phone number directly, but you can make calls from the address book by operating the operation keys 14 or other operation keys not shown. You can make a call.

 (4) Receiving mobile mail

When you receive an e-mail, you can receive it by operating key 14.

 (5) Use as a game machine

As shown in Fig. 2, the operation keys 1 4 _ 1 and 1 4 _ 2 are arranged on both sides in the longitudinal direction of the display section 1 1 of the first housing 1 0, so that they can be operated with both hands. Can be used. Speakers 1 2-1, 1 2-2 and microphones 1 3 _ 1 and 1 3-2 are also arranged in the same way so that you can enjoy the stereo effect and not worry about the vertical direction when using as a mobile phone. Can receive.

 Second positioning

 In FIGS. 5 to 7, the first housing 10 rotates 90 degrees clockwise from the state of FIG. 1 along the front surface 8 of the second housing 30 around the first shaft 51. The display unit 11 is located approximately in the center in the left-right direction with respect to the second housing 30. At this time, the cellular phone key operation unit 31 appears below the front side 8 of the second housing 30. A microphone 3 2 is disposed below the key operation unit 3 1 for the mobile phone. In addition, the display unit 11 can be used at an angle that makes it easy to see the first housing 10 with respect to the front surface of the second housing 30 as indicated by a two-dot chain line in FIG. There are four main uses for this positioning.

 (1) Number entry, outgoing call, telephone call by key operation part for mobile phone

Phone numbers and email text can be entered using the keys on the cell phone key operation unit 31. In this case, so-called one-handed input can be performed in which the key operation unit is input using the thumb while holding the second housing 30 with only one hand. Speaker 1 2 is used for calling and microphone 3 2 is used for voice input.

 (2) Mobile phone mail input / transmission using the key operation unit for mobile phones

You can send the phone number and email text you entered. (3) Camera imaging

 Use this position when you take the portable information terminal 1 in your hand and take a picture on the horizontal screen. At this time, as shown in FIG. 7, the camera lens 15 and the light emitter 16 constituting the camera lens unit are on the back of the display unit 11, and the operator can take a picture while viewing the display unit 11.

 (4) Watching TV

 You can watch TV by holding the second housing 30 with one hand. It is convenient to watch while walking or walking.

 [0068] Third positioning

 8 to 10 show that the first casing 10 is up to about 90 degrees with respect to the front surface of the second casing 30 with respect to FIG. Use it on a desk. There are two main uses for this positioning:

 (1) Watching TV on a desk

 By placing the second housing 30 on the desk and adjusting the angle of the display to an easy-to-see angle, you can have fun. Since the cellular phone key operation unit 3 1 is located in an exposed place in front of the display unit 1 1, it can be easily used for selecting a TV station and adjusting the volume.

 (2) Camera imaging with self-timer

 You can shoot on the ground or structures without holding the camera. FIG. 8 shows a state where the portable information terminal device 1 is placed on the ground structure 90. The display unit 1 1 is in a state in which 0 1 is further increased from the state of FIG. 6 to approximately 90 degrees. Since the portable information terminal device 1 is stable in this state, the operator can also become a subject after taking a picture using the self-timer. Even if the ground structure is tilted back and forth, the optical axis of the camera lens 15 can be easily directed toward the subject.

 [0069] Fourth positioning

11 to 14, the second casing 30 is provided with a personal computer key operation part 33 on the back side of the mobile phone key operation part 3 1. PC key operation when the second housing 30 is rotated 180 degrees from the folded two-dot chain line in Figure 12 The part 33 and the display part 1 1 of the first housing 10 are on the same surface. This key operation unit 33 has a smaller key size than a normal portable personal computer. Functionally, it has almost the same number of key operation units. Further, in FIG. 14, the second casing 30 is rotated from the folded two-dot chain line to over a range of 180 degrees beyond 180 degrees. In addition, the screen is easier to see by devising the position of the second axis as described above. In Fig. 39, the screen is easier to see by changing the position of the second axis as described above. The main uses in this positioning are as follows.

 (1) PC input / output via PC key operation section

It can be used as an ultra-compact portable personal computer. For example, when sitting on a train seat, the user can hold the portable information terminal device 1 with both hands and use the thumb keys of both hands to input using the key operation unit 33 for the personal computer. In an environment with a desk, the portable information terminal device 1 can be placed on the desk and input can be performed using the index finger of both hands. When entering using the mobile phone key operation unit 3 1 as shown in Fig. 5, the number of keys is too small, so you have to press the key several times to enter certain characters and symbols. However, in the case of Fig. 11 and Fig. 13 this is not the case, so input work can be done efficiently. The PC key operation unit 3 3 only needs to be valid only when this position is reached. In other positioning, incorrect input will be eliminated if the switch is automatically turned off. Similarly, if the key operation unit 31 for the mobile phone is automatically turned off during this positioning, there will be no erroneous input.

 (2) Sending and receiving e-mails and surfing the Internet

You can enjoy sending and receiving e-mail and surfing the Internet, just like a normal computer.

 5th positioning

 FIG. 15 shows a case where the second housing 30 is moved downward with respect to the first housing 10 from the state of FIG.

Fig. 3 3 and Fig. 3 8 show the slicing of the second housing from the state of Fig. 29 and Fig. 34. In this example, the door members 6 2 0 and 7 2 0 are moved downward relative to the first housings 6 1 0 and 7 1 0.

In either case, the mobile phone key operation unit 3 1, 6 3 1, 7 3 1 below the display unit 1 1, 6 1 1, 7 1 1 of the first housing 10 0, 6 1 0, 7 1 0 Appears. The following description will be given with reference to the example of FIG. 15, but the same applies to the cases of FIGS. A microphone is arranged further below the cellular phone key operation unit. There are four main uses for this positioning.

 (1) Appreciate portrait screen content

Use the keys on the key operation unit 3 1 to select and view the contents of the vertical screen distributed for mobile phones. In this case, the key operation unit 31 can be operated using the thumb while holding the second housing 30 with only one hand.

 (2) Number entry, outgoing call, telephone call by key operation part for mobile phone

Phone numbers and email text can be entered using the keys on the cell phone key operation unit 31. Also in this case, so-called one-handed input can be performed in which the key operation unit is input using the thumb while holding the second housing 30 with only one hand. Speaker 1 2 is used for calls and microphone 3 2 is used for voice input.

 (3) Entering and sending mobile mail using the key operation unit for mobile phones

 (4) Camera imaging (only for Fig. 15)

Use this position when taking a picture on the vertical screen while holding the portable information terminal device 1 in your hand. At this time, the camera lens 15 and the light emitter 16 constituting the camera lens unit are on the back of the display unit 11, and the operator can take a picture while viewing the display unit 11.

==== Second Embodiment ====

A second embodiment of the present invention will be described with reference to FIGS. In the present embodiment, the portable information terminal device 20 0 1 has a relatively large space h 2 in the mobile phone key operation part 2 3 1 of the second housing 2 3 0 compared to the first embodiment. Is assumed. FIGS. 16 and 17 show the first casing 2 10 closed. FIG. 18 shows a state in which this is opened, which corresponds to FIG. 5 of the first embodiment. The difference will be described in detail in comparison with this.

 [0072] Although the description overlapping with the first embodiment is omitted, the line 2 0 5 _ 1 corresponds to the line 5-1 of the first embodiment. The line 2 0 5 _ 2 corresponds to the line 5 _ 2 in the first embodiment. That is, the fact that the center of the first axis is on the line 2 0 5 _ 1 is because the display portion 2 11 of the first housing 2 10 is located in the center in the left-right direction of the second housing 2 30. It is a necessary condition that the center of the first axis on the line 2 0 5 _ 2 is a necessary condition for exposing the PC key operation part 2 3 1 of the second housing 2 30. The intersection 2 5 1 of these two lines is the position of the first axis that satisfies the two conditions simultaneously.

 [0073] However, the distance between the intersection 2 5 1 and the right side 2 0 3 of the second housing 2 3 0 or the mobile phone key operation unit 2 3 1 of the intersection 2 5 1 and the second housing 2 3 0 The distance from the upper boundary line 2 0 6 of the space h 2 to be arranged is X 2 and is smaller than the distance Z to the right side surface necessary for the strength of the first axis. As a solution in such a case, there is a way to forcibly reduce the key operation part and strictly pursue the left-right symmetry of the display part, but from the standpoint of the user, it is more key than that. There is also a view that it would be nice to have a large operating section and easy to use. Therefore, the key operation part is enlarged as planned. In other words, the condition that the first axis is on 2 05 _ 2 is observed. On that basis, if we try to secure z, which is a strength condition, point 2 5 7 is determined as the optimal point to achieve both.

 In other words, the position of the first axis 2 5 7 is an angle of 45 degrees with respect to the side from the intersection of the upper boundary line of the key operation part of the second housing and the side. It can be said that it is a point on the straight line drawn upward and inside, and the point closest to this intersection as far as the strength is allowed, that is, the point in the vicinity of this intersection.

 [0075] ==== Third Embodiment ====

A third embodiment of the present invention will be described with reference to FIGS. In the case of the first embodiment or the second embodiment, the PC key operation section has a sufficient number of keys, but there is a problem that the individual keys are small and difficult to press. This embodiment solves this problem. The basic structure is the first or second embodiment. In addition to the structure described in the embodiment, a new 3rd case 3 4 0 is added, and the configuration when used is wide and easy to push the keypad as shown in Figure 22. It is easy to see because it is located in the center. The structure is explained below.

 FIG. 19 is a diagram when the portable information terminal device 30 1 according to the present embodiment is closed.

 The relationship between the first housing 3 1 0 and the second housing 3 3 0 is the same as that in the first embodiment or the second embodiment. That is, it is connected by a rotating member having two axes so as to be rotatable, and the positional relationship between the first axis and the second axis is the same as in the first embodiment or the second embodiment. FIG. 20 corresponds to the second positioning in the first embodiment, and FIG. 21 corresponds to the fourth positioning.

 In addition to the above, the present invention further includes a third housing 3 40 having substantially the same shape as the first housing 3 10 and the second housing 3 30 on the back side of the second housing 3 30. In addition, it is rotatably connected to the second housing 3 30 through the third shaft 3 60. The position of the third shaft 3 60 is above the second housing in FIG. 19 and is parallel to the upper side. In the present embodiment, the center of the third shaft 3 60 is located between the upper side of the second casing 3 30 and the upper side of the third casing 3 40. By doing so, when the third housing 3 4 0 is opened, it becomes flush with the second housing 3 3 0.

 Next, a procedure for opening this will be described. Rotate the first casing 3 1 0 from Fig. 2 0 further 90 degrees. Then, when the third casing 3400 is rotated 180 degrees relative to the second casing 330, the target shape shown in FIG. 22 is obtained. The key operation section 3 3 4 of the second housing 3 3 0 and the key operation section of the third housing 3 4 0 are two integrated key operation sections for the PC, and the display section 3 1 of the first housing 3 1 0 1 is located approximately in the center of this PC key operation unit.

[0079] The key operation unit on the front surface 3 3 8 of the second housing 3 3 0 has a different pattern between FIG. 20 and FIG. 2 2, but for example, by adopting a touch panel type, the pattern depends on the application. You may make it the system which switches itself. That is, the display unit 3 3 1 in FIG. 20 and the display unit 3 3 4 in FIG. 2 2 are switched. Or mobile phone A method may be used in which the talk pattern and the personal computer pattern are partially shared. For example

The shape of the key operation part of the portable information terminal device 30 1 is as shown in FIG. 22. The key operation part 3 3 4-1 is a common key for portable and personal computers as the numeric keypad part. 3 3 4 _ 2 can be used as a dedicated operation unit for portable use, and the key operation unit 3 3 4 _ 3 can be used as a dedicated operation unit for a personal computer.

 [0080] ==== Fourth Embodiment ====

 A fourth embodiment of the present invention will be described with reference to FIGS. 24 and 25. FIG. In the case of the first embodiment or the second embodiment, the PC key operation section has a sufficient number of keys, but there is a problem that the individual keys are small and difficult to press. In the present embodiment, as in the third embodiment, this is solved.

 [0081] In addition to the first or second embodiment, the portable information terminal device 40 1 in the present embodiment newly adds a third casing 4400 to the back side of the second casing 4300. . The third housing 4 40 is divided into two parts, that is, an upper part 4 4 1 and a lower part 4 4 2 having a shape substantially the same as that of the second case 4 30 in plan view. In the state of FIG. 23 with the portable information terminal device 4 0 1 closed, the second housing 4 30 and the upper portion 4 4 1 of the third housing are parallel to the upper side provided above the second housing. About the third axis 4 61 1, it can be rotated 180 degrees from the superposition state. Similarly, the second housing 4 30 and the lower portion 4 4 2 of the third housing are centered on a fourth axis 4 6 2 parallel to the lower side provided below the second housing 4 30. It can be rotated 180 degrees from the polymerization state. In the present embodiment, the third axis is located between the upper side of the second housing 4 30 and the upper side of the third housing 4 41. By doing so, when the third casing 3400 is opened, it becomes flush with the second casing. The same applies to the fourth axis.

FIG. 25 is a diagram in which the first casing 4 10 and the third casing 4 40 are opened to be used as a personal computer. The key operation unit for the personal computer is arranged in the second casing 4 30 and the third casings 4 4 1 and 4 4 2 so that it can be operated in this opened state. The display section 4 1 1 of the first housing 4 1 0 is located approximately in the center of the key operation section in the left-right direction, making it easy to see the screen while hitting the keys. In addition, the size of the key is larger than in the case of FIG. 11 or FIG. 13 in the first embodiment. The work becomes frustrating.

 [0083] In the case of this embodiment, when the third housing 4 40 is folded to the state shown in Fig. 24, the key operation unit for the personal computer is removed, so the third housing 4 40 is the same as the cover. It will also play a role.

 [0084] ==== Fifth embodiment ====

 A fifth embodiment of the present invention will be described with reference to FIGS. The portable information terminal device 50 1 of this embodiment is assumed to be mainly used only as a mobile phone, and is not considered for use as a personal computer. The specific differences from the first embodiment due to the difference in purpose are the following two points.

 [0085] The first difference is that the positions of the upper and lower ends of the first housing and the second housing are not aligned. However, when the first housing is rotated 90 degrees, the horizontal position of the display unit is approximately at the center of the second housing. With such an arrangement, the operation space for the operation keys of the second housing can be widened downward, and part of the operation keys can be operated at all times. In addition, since the camera lens section (camera lens 5 15 and light emitting section 5 1 6) is on the back of the display section and is always exposed, it is possible to take a picture even with the first housing closed.

 [0086] The second difference is that the front surface of the first housing exists over the entire surface. Accordingly, the display unit can be made larger than that in the first embodiment. However, the first housing can only rotate up to about 90 degrees with respect to the second housing, and the PC key cannot be used like the fourth positioning in the first embodiment. Suitable for use as a mobile phone dedicated machine.

 Although the main mechanism of the portable information terminal device has been described above, the present invention is not limited to this. For example, the cable is structured to pass through the hollow portion of the shaft member, but may be passed through the outside of the shaft. Alternatively, a method of exchanging power and signals in a non-contact manner may be used. In these cases, it is not necessary to provide a slit on the shaft or to be hollow, and since it can be fixed without being rotated at the contact portion with the first housing, it is advantageous in terms of strength.

[0088] In the above description, the structure including the mechanism for sliding up and down has been described. A structure that does not include a slide as shown in Fig. 42 may be used.

Industrial applicability

 The present invention can be used for many applications as a portable information terminal. For example, mobile phones, mobile personal computers, digital cameras, game consoles, mobile TVs, electronic dictionaries, PDAs (PDAs). These existed in the past as separate devices belonging to different technical fields, but they can be consolidated into one device and positioned optimally for various usages.

Claims

The scope of the claims  [1] A first housing having a display unit on the front surface and a second housing having a key operation unit below the front surface, and the second housing on the front side. Place the polymer on the back side,  When the first casing is rotated 90 degrees along the front side surface of the second casing, the key operation part of the second casing is exposed, and the first casing or its display Is located at the approximate center in the left-right direction of the second housing,  And the said 1st housing | casing can change an angle with respect to the surface of the front side of the said 2nd housing | casing. The portable information terminal device characterized by these. [2] A first casing having a display unit on the front side and a second casing having a key operation unit below the front side, the first casing on the front side and the second casing on the back side, 2 With a rotating member with two axes,  The first axis of the rotating member has a center line in the vertical direction of the surface on the front side of the second housing, and the position thereof is a length in the vertical direction of the first housing or its display part, When the length of the second casing in the left-right direction is b, the first casing or the display unit when the first casing is closed. (A-b) Take a point on the side that is separated by a length of 2, and draw a straight line from the point to the side with a 45 ° angle to the side, above the key operation unit At the intersection of a straight line drawn upward and inward at an angle of 45 degrees to the side from the intersection of  The second axis is at the end of the side of the first housing on the side where the intersection is, and is parallel to the side;  A portable information terminal device. [3] A first housing having a display portion on the surface and a second housing having a key operation portion below the surface, with the first housing on the front side and the second housing on the back side, It is arranged in a superposed manner with the rotating parts The first axis of the rotating member has a center line in the vertical direction of the surface of the second housing, The position is a point on a straight line drawn from the intersection of the upper boundary line of the key operation part of the second housing and the left or right side to the upper side at an angle of 45 degrees with respect to the side. In the vicinity of the intersection,  The second axis is at the end of the side of the first housing on the side where the intersection is, and is parallel to the side;  A portable information terminal device. [4] The key operation unit is exposed when the second casing or the key operation unit of the second casing is slid downward relative to the first casing.  The portable information terminal device according to any one of claims 1 to 3. 5. The portable information terminal device according to claim 4, wherein the second shaft of the rotating member is slidable with the shaft member of the first housing. [6] The second casing has a member that slides up and down, and has a key operation portion below the front side of the member.  The portable information terminal device according to claim 4, wherein: [7] A camera lens portion is provided on the back surface of the first housing.  The portable information terminal device according to any one of claims 1 to 6, wherein: [8] A key operation unit is provided on the back surface of the second housing.  The portable information terminal device according to any one of claims 1 to 7, wherein [9] A third housing having substantially the same shape as the second housing in a plan view is arranged on the back side of the second housing,  Pivoting 180 degrees from the overlapped state around a third axis parallel to the upper side provided above the second housing;  The portable information terminal device according to any one of claims 1 to 7. [10] When the third casing is rotated 180 degrees, key operation is performed on a surface of the second casing and the third casing in the same direction as the display section of the first casing. The portable information terminal device according to claim 9, further comprising a unit. [1 1] A third side having a shape substantially the same as that of the second casing in a plan view on the back side of the second casing. Dividing the housing into two parts  From the superposition state, each of the divided parts is centered on a third axis parallel to the upper side provided above the second casing and a fourth axis parallel to the lower side provided below the second casing. Rotating degree,  The portable information terminal device according to claim 8. [12] When the third housing is opened, a key operation portion is provided on the open surfaces of the second housing and the third housing;  The portable information terminal device according to claim 11, wherein: [13] The first casing is arranged so as to protrude upward with respect to the second casing, and a part of a lower key of the key operation unit of the second casing and a back surface of the first casing The camera lens of the camera is always exposed,  The portable information terminal device according to any one of claims 1 to 6.