Electricity: electrical systems and devices – Electrostatic capacitors – Fixed capacitor
Patent
1990-09-05
1992-04-21
Picard, Leo P.
Electricity: electrical systems and devices
Electrostatic capacitors
Fixed capacitor
16307, 16342, 248921, 364708, H05K 716, E05D 7086, G06F 100
Patent
active
051074028
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to a portable data-processing terminal with pivoting screen such, for example, as a micro-computer.
Generally, a data-processing terminal usually comprises an assembly formed of three elements, namely: circuits used by this terminal (processor, disk storage units, cartridges, memory cards, power supply circuit, ventilation system, etc. . . ); display; and
In terminals of this kind, designed to be used in a fixed station, these three elements are very often in the form of separate modules so as to permit the user to dispose them conveniently for use.
However, because of the miniaturization of the components, this assembly may be made from two parts, the central unit then being incorporated either in the keyboard or in the screen.
Such is in particular the case in portable terminals proposed at the present time which very often have a structure similar to that of an attache case with two compartments hinged together and which can be detached from each other, one of the compartments containing the screen, whereas the other contains the keyboard as well as the main elements of the central unit.
Such miniaturization has also made it possible to construct so-called "pocket" portable apparatus in which the three above mentioned elements are assembled together in the same case of very small size.
However, despite the possibilities of miniaturization offered through the advance in the technique, it is scarcely desirable, for ergonomic reasons, to reduce the dimensions of the apparatus beyond certain limits.
In fact, the keyboard would become difficult to use and the possibilities of display on the screen would be considerably reduced, from the readability point of view. This is why the applications of pocket computers, which suffer from these drawbacks, remain relatively limited.
The portable terminals for professional use, mentioned above, of much larger size do not suffer from these drawbacks.
However, these terminals, which are mainly designed as a function of the portability criterion, very often to the detriment of ergonomics, are not always adapted to all conditions of use for which they are intended.
Such is the case particularly when these terminals are used in places (e.g. in a factory, on worksites or even in vehicles) not permitting the usual arrangement of keyboard and screen with respect to the operator.
The object of the invention is more particularly to overcome these drawbacks.
SUMMARY OF THE INVENTION
Contrary to the present tendency, a portable terminal is provided of the type comprising a central unit, a keyboard and a screen, the keyboard and the screen forming separate units of the central unit and comprising means for fixing them thereon, the keyboard being disconnectable, whereas the means for fixing the screen comprise at least one lever articulated to the central unit and to the screen by means of at least two articulations spaced apart from each other and disposed parallel to each other.
According to the invention, this terminal is more particularly characterized in that the lever is articulated to a first face of the central unit and has a bent shape so as to permit the screen to take up a position folded back against a second face of the central unit.
Similarly, the means for fixing the keyboard may comprise indexation and unlockable clipping means for folding said keyboard back against the face of the central unit against which the screen folds back.
In a preferred embodiment of the invention: base defining a support surface and a top opposed to the base; two opposite lateral faces which extend transversely with respect to this front face; which are articulated, by one of their ends, to two respective points situated in a central region of said lateral faces, along a first common articulation shaft parallel to the front face of the screen, and, by their other ends, to the top of the central unit, along a second articulation shaft parallel to the first one as well as to the front face of the central unit and to the support sur
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Drucker William A.
Phillips Michael W.
Picard Leo P.
Telemecanique
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