Thin structure information processing apparatus

Abstract: A thin structure information processing apparatus includes a body (1) which has a substantially planar structure and structure and accommodating therein at least a main board (2); a power supply board (3); a built-in battery (4); and a built-in hard disk drive (5). The main board, the power supply board, the built-in battery and the built-in hard disk drive are arranged in such a manner they are not imposed on each other with respect to a plane of the substantially planar structure. The main board (2) is provided with connectors (9) which project upward from the main board at positions away from the areas where a keyboard module (6) overlaps the main board (2).

Description: This invention relates to an information processing apparatus such as a notebook-type personal computer, a word processor, and so forth. More particularly, it relates to an information processing apparatus having a thin structure. As the portability of an information processing apparatus, such as a portable computer, has been improved in recent years, a small thickness has been required. Therefore, an information processing apparatus having a small thickness must be provided. In conventional information processing apparatuses, the internal modules and units that make up the information processing apparatus are arranged in superposition with one another in the height direction. For example, a built-in battery and a built-in hard disk drive (HDD) are disposed below a keyboard module or a main board. In the conventional information processing apparatus, an upward connector is disposed on the surface of the main board facing the keyboard module. When two PC card slots are provided in such a conventional information processing apparatus, they are disposed in a stack form in the direction of height. As examples of the prior art references, Japanese Unexamined Patent Publication (Kokai) Nos. 8-76887 and 8-76898 describe an information processing apparatus having a reduced thickness structure. Japanese Unexamined Patent Publication (Kokai) No. 8-76885 discloses an information processor equipped with speakers mounted to a substrate for peripheral processing and for a speaker, and Japanese Unexamined Patent Publication (Kokai) No. 8-76886 discloses a structure wherein a cover casing to which a liquid crystal display is fitted is provided with a reduced thickness. As described above, the thickness of the information processing apparatus of the prior art is the sum of the height of respective internal modules disposed in superposition with one another, and becomes greater than the height of each internal module by the superposition thickness. Further, a gap is necessary between the main board and the keyboard module so that the connector and cables can be disposed inside it. Another thin structure information processing apparatus, disclosed in US 5237486, may be considered to comprise: a body of said information processing apparatus, said body having a substantially planar structure and accommodating therein at least a main board; a built-in hard disk drive; and a keyboard module. In this apparatus, the built-in hard disk drive and main board are arranged so that they do not overlap one another when viewed in a direction perpendicular to a main plane of the body. A special frame, made of magnesium alloy, is placed between upper and lower case halves for providing increased structural strength, thermal cooling and electromagnetic shielding. US 5132876 discloses a notebook computer which has a unitary upper cover and keyboard unit, a motherboard, a hard disk drive, a rechargeable battery and a power supply unit. The computer has no body accommodating therein these elements and instead the external surfaces of the elements when assembled together directly provide the external surfaces of the computer. "Building Block Concept for Notebook Personal Computer", IBM Technical Disclosure Bulletin, vol. 38, no. 10, 1 October 1995, pp. 521-522, XP000540580, discloses a mechanical structure for a notebook personal computer to permit various versions of PCs to be produced from a set of common parts. Functional cards such as a main logic card and a memory card are stacked one above the other, however. A thin structure information processing apparatus embodying the present invention is characterised in that said main board, a power supply board, a built-in battery and said built-in hard disk drive are arranged across a main plane of said substantially planar structure in such a manner that, when viewed in a direction perpendicular to said main plane, those elements do not overlap one another; and said main board is provided with at least one connector which projects upward from an upper surface of said main board and which is arranged at a position other than an area where said keyboard module overlaps said main board when viewed in said direction. Such an information processing apparatus can further promote the reduction in thickness and improve portability. In conventional thin structure information processing apparatus, when two PC card slots are installed, the thickness becomes greater than when one PC card slot is disposed. In a preferred embodiment of the present invention the main board and the keyboard module are arranged substantially in parallel to each other so that a gap is defined between the main board and the keyboard module and the body has at least two PC-card slots which are arranged in such a manner that these PC-card slots are located within the gap and do not overlap one another when viewed in the said direction. Reference will now be made, by way of example, to the accompanying drawings in which: Fig. 1 is a plan view showing the disposition and planar construction of internal modules of an information processing apparatus embodying the present invention; Fig. 2 is a perspective view showing the disposition and construction of the internal modules of the Figure 1 information processing apparatus when they are viewed form an oblique direction; Fig. 3 is a side view showing the disposition of an upward connector disposed on a main board; Fig. 4 is a side view showing the disposition of PC-card slots; Fig. 5 is a side view showing the disposition of the internal module of an information processing apparatus embodying the present invention; Fig. 6 is a side view showing the disposition of a connector of a main board in a previously considered information processing apparatus; and Fig. 7 shows six views of a thin information processing apparatus according to one embodiment of the present invention. Hereinafter, information processing apparatuses according to preferred embodiments of the present invention will be explained in detail with reference to the accompanying drawings. Fig. 1 is a plan view showing the disposition and construction of internal modules of an information processing apparatus embodying the present invention, and Fig. 2 is a perspective view when the disposition and construction is viewed from the oblique direction. In the drawings, reference numeral 1 denotes a main body of an information processing apparatus, reference numeral 2 denotes a main board, reference numeral 3 denotes a power supply board, reference numeral 4 denotes a built-in battery, reference numeral 5 denotes a built-in HDD (hard disk drive), reference numeral 6 denotes a keyboard module, reference numeral 7 denotes a palm rest, reference numeral 8 denotes a pointing device, and reference numeral 10 denotes a PC-card slot. As shown in Fig. 1, the main board 2 is positioned in a wide rear area away from the side of an operator (not shown). The power supply board 3 is disposed at the center of the front part of the main board 2, the built-in battery 4 is disposed on the right side and the built-in HDD 5 is disposed on the left side. Further, these members are so disposed as not to overlap with one another plane-wise, i.e. when viewed in a direction perpendicular to a main plane of the body 1. Incidentally, the main body 1 and the built-in HDD 5 are connected by cables and a connector, and the power supply board 3 and the built-in battery 4 are connected by a connector. The built-in battery 4 and the built-in HDD 5 at the right and left sides of the front portion have a relatively large height, are not therefore disposed below the keyboard module 6 but are disposed below the palm rest 7 where the greatest height can be secured (see also Fig. 5). The power supply board 3 at the center of the front portion is lower than the built-in battery 4 and the built-in HDD 5, and is therefore disposed below the pointing device 8 for moving a cursor. Since the main board 2 has a relatively small thickness, it is disposed in superposition with the keyboard module 6. As shown in Fig. 3, however, the upward connector 9 connected to the main board 2 is disposed at a position other than the overlapping position of the main board 2 with the keyboard module 6, such as at the front and rear end positions of the main board 2 deviated from the area of the keyboard module 6 as viewed from the side of the operator (not shown). Other electronic components (not shown) disposed on the main board 2 are far thinner than the connector 9. Therefore, even when they are disposed at overlapping positions with the keyboard module 6, the internal thickness of the information processing apparatus does not increase much as a whole. In consequence, the necessary internal thickness can be much reduced in comparison with previously-considered information processing apparatuses (an example of which is shown in Fig. 6) wherein the connector 9 is disposed below the keyboard module 6. By the way, the upward connector 9 may be disposed at any position of the main board 2 other than the overlapping position between the main board 2 and the keyboard module 6. For example, it can be disposed at the left end and/or at the right end of the main board 2. Fig. 4 shows the positional relationship between the main board 2 and PC-card slots 10 when two card for extending the functions, that is, two PC-card slots 10, are disposed. As shown in this drawing, the two PC-card slots 10 are disposed at the right and left position of the main board so as not to overlap with each other as viewed from the side of the operator (not shown). Each PC-card slot 10 is disposed between the main board 2 and the keyboard module 6 as shown in Fig. 2. Therefore, the operator can load the necessary PC-cards (not shown) from the right and left side surfaces of the information processing apparatus. Incidentally, though only one PC-card slot 10 is shown disposed on the right side in Fig. 2, two PC-card slots 10 can be disposed on both right and left sides. Furthermore, an additional PC-card slot may, of course, be disposed in addition to the right and left positions, if possible. In order to further reduce the thickness, the portion of the main board 10 corresponding to the disposition portion of the PC-card slot 10 may be cut off, and each PC-card slot can be disposed at this notch portion. Fig. 7 shows the appearance of an information processing apparatus embodying the present invention by six views. The outer dimension of the information processing apparatus 1 of this invention is 297 mm width, 232 mm depth and 28.2 mm height, and the thickness can be thus reduced. In apparatus embodying the present invention, as described above, the main board, the power supply board, the built-in battery and the built-in HDD are disposed in such a manner as not to overlap with one another, at portions other than the connector portions for connecting them, respectively. Also, the upward connectors of the main board are disposed at the positions other than the position immediately below the keyboard module such as at the front end or the rear end when the main board is viewed from the front. Because of this, the thickness of the apparatus can be reduced by the overlapping thickness with the keyboard module. Therefore, the necessary internal thickness of the information processing apparatuses can be made smaller than that of previously-considered apparatuses, and embodiments of the present invention can contribute to the reduction of the thickness and to the improvement of portability of the information processing apparatus. Because in one embodiment the built-in battery and the built-in HDD are not disposed below the keyboard module but are disposed below the palm rest portion where the greatest height can be secured, this embodiment of the present invention can contribute to the reduction of thickness of the information processing apparatus and to the improvement of its portability. Furthermore, because in another embodiment the two PC-card slots are disposed so as not to be superposed in the direction of thickness, the provision of such PC-card slots does not invite an increase in the thickness but can contribute to the reduction of the thickness of the information processing apparatus and to the improvement of its portability. It should be understood by those skilled in the art that the foregoing description relates to only a preferred embodiment of the disclosed invention, and that various changes and modifications may be made to the invention without departing from the scope as disclosed by the appended claims.

Claims: A thin structure information processing apparatus comprising: a body (1) of said information processing apparatus, said body having a substantially planar structure and accommodating therein at least a main board (2); a built-in hard disk drive (5); and a keyboard module (6); a power supply board (3); and a built-in battery (4); characterised in that said main board, said power supply board, said built-in battery and said built-in hard disk drive are arranged across a main plane of said substantially planar structure in such a manner that, when viewed in a direction perpendicular to said main plane, those elements (2-5) do not overlap one another; and said main board (2) is provided with at least one connector (9) which projects upward from an upper surface of said main board and which is arranged at a position other than an area where said keyboard module (6) overlaps said main board when viewed in said direction. A processing apparatus as set forth in claim 1, wherein said main board (2) is provided with at least two such connectors (9) projecting upward from the upper surface of said main board, at least one of which connectors is arranged beyond a first edge of said keyboard module and at least another one of which connectors is arranged beyond a second edge of said keyboard module. A processing apparatus as set forth in claim 1 or 2, wherein said body (1) has, adjacent to and in front of said keyboard module, a palm rest (7) at an area which is above said built-in battery (4). A processing apparatus as set forth in claim 1, 2 or 3, wherein said body (1) has, adjacent to and in front of said keyboard module, a palm rest (7) at an area which is above said built-in hard disk drive (5). A processing apparatus as set forth in any one of claims 1 to 3, wherein the said body has a front portion nearest to an operator of the apparatus and a rear portion further away from the operator than said front portion, and said power supply board (3), said built-in battery (4), and said built-in hard disk drive (5) are arranged in said front portion of said body, and said main board (2) and said keyboard module (6) are arranged in said rear portion of said body. A processing apparatus as set forth in any one of claims 1 to 5, wherein: said main board (2) and said keyboard module (6) are arranged substantially in parallel with one another so that a gap extending in the said direction is defined between the main board and the keyboard module; and said body (1) has at least one card slot (10), into which a card for extending the functions of the apparatus is removably insertable, which slot is arranged so that the card, when received in the slot, is located within said gap and in parallel with said main plane. A processing apparatus as set forth in claim 6, having at least two such card slots (10), each for receiving a card for extending the functions of the apparatus, which slots are arranged so that the cards, when received respectively in the said slots, are located within said gap at different positions across said main plane and do not overlap one another when viewed in the said direction. A processing apparatus as set forth in claim 7, wherein one of said card slots is located on a first side of said body and a further one of said card slots is located on a second side of said body, said first and second sides being on the left and right sides respectively of an operator of the apparatus. A processing apparatus as set forth in any one of claims 6 to 8, wherein said main board (2) has a notch portion extending inwardly from one edge thereof, where the board is not present, which notch portion is arranged for accommodating such a card when received in the, or in one such, card slot. A processing apparatus as set forth in any one of claims 6 to 9, wherein the or each said card slot is a PC-card slot.

Inventors: OHNISHI MASUO, SHIN TAKAHIRO, OHNISHI, MASUO, SHIN, TAKAHIRO, Ohnishi, Masuo, Fujitsu Limited, Shin, Takahiro, Fujitsu Limited
Applicants: FUJITSU LTD, FUJITSU LIMITED
Application year: 1997
Main classification: G06F1
IPC codes: G06F1