FIG. 6 is a partial view in longitudinal section via a plane passing through the retention lug of the contact member of the detection switch;
FIGS. 7 and 8 are diagrammatic views illustrating the operation of the detection switch; 5
FIG. 9 is a partial plan view of the casing illustrating the battery drawer in the exit position;
FIG. 10 is a perspective view of a variant embodiment of the front part of the portable case;
FIG. 11 is a view similar to that of FIG. 5, corre- 10 sponding to the variant embodiment of FIG. 10; and
FIG. 12 is a diagrammatic plan view illustrating a further variant embodiment of the portable case.
The portable case illustrated in the figures is composed essentially of a casing 10 of rectangular parallele- 15 pipedal shape with dimensions which are substantially homothetic with those of an electronic smart card C which conforms to the ISO standard.
The casing 10 is, for example, produced from two half-casings 12 and 14 whose joining plane extends sub- 20 stantially at mid-height of the casing. For purposes of discussion, the half-casing 12 may be considered the lower or bottom one and the half-casing 14 may be considered the top one, as this is the orientation shown in FIGS. 2 and 4-6. Of course, the case can be used in 25 any orientation relative to gravity.
The casing comprises two plane main walls 16 and 18, parallel to the main faces of the card C, and three lateral faces, of which the smallest, corresponding to the width of the card delimits a back 20 which extends in a plane 30 perpendicular to the direction I of insertion of the card C. The plane main walls 16,18 he in substantially parallel planes, and the card C lies substantially in a plane (which is halfway between the top and bottom card faces) which is parallel to the main walls. 35
The lateral small face opposite the back 20 is absent in order to delimit a window 22 for the insertion of the card into the case.
The casing comprises a printed circuit board 24 which extends substantially over the entire surface of 40 the casing and which is held in place parallel to the faces 16 and 18, between the 2 half-casings 12 and 14, by being held laterally in an indentation 27 of a partition 90 of the half-casing 14.
In accordance with the appearance of the invention, 45 the placing of the card C inside the casing 10 is effected by means of a card drawer 26.
The drawer 26 is produced in the form of a frame consisting of two symmetrical legs 28 and 30 connected together by a crosspiece 32. 50
The legs 28 and 30 form slides which are received in corresponding slideways 34 and 36 formed partly on the inner face of the half-casing 14 in order to permit sliding of the drawer 26 in a direction parallel to the direction I of insertion of the card. 55
The opposing inner faces 38 and 40 of the legs or longitudinal members 28 and 30 comprise plane portions 42 which extend parallel to the sliding plane in order to delimit a compartment in the drawer 26 which receives the card C. 60
As may be seen in FIG. 1, the frame of the drawer 26 does not comprise a back, that is to say a transverse leg opposite the back 20 of the casing, and this is in order to permit the interaction of the front free edge 44 of the card C with a member of a switch for detecting the 65 presence of a card, as will be explained below.
The crosspiece 32 is connected to the free ends of legs 28 and 30 which are able to exit from the casing 10 via
the window 22. The crosspiece 32 constitutes the lateral face for leaktight closing-off of this window 22 when the drawer is in its return position in the casing 10 (see FIG. 5).
Locking of the drawer 26 in the return position is ensured by snugs 46 formed on the outer lateral faces of the longitudinal legs 28 and 30 which are received in corresponding notches 48 formed in the two longitudinal lateral faces of the casing 10.
Unlocking, in order to make it possible to bring the drawer 26 into the exit position, is effected by virtue of relief parts forming buttons 50 which are accessible through notches 52, from the outside of the casing, and on which the user can act from the outside in order slightly to deform the legs 28 and 30 inwards and thus release the snugs 46 from the notches 48.
This elastic deformation of the legs 38 and 40 is made possible by the recess 39 of the corresponding part of the legs, which results in an elastically deformable thinned portion.
The length of the notches 52, in the direction I, determines the sliding travel of the drawer 26 towards its exit position via the interaction of the front edge 56 of the button 50 with the front vertical edge 54 of the corresponding notch 52.
The exit position of the drawer 26 is such that it is located only partially outside the casing 10 in this position.
In order to facilitate the insertion of the card C into the housing delimited by the lateral legs 28 and 30, without having to deform the card, the front transverse face 32 of the drawer is mounted in an articulated manner about a pivoting spindle 58 perpendicular to the direction I of sliding.
According to the embodiment shown diagrammatically in FIGS. 1 and 4, the frame, is, for example, produced by moulding as a single piece, and a recess 60 as well as a slot 61 delimit a thinned portion 62 in order to constitute a hinge for articulation of the shutter 32 about the spindle 58.
The front face or shutter 32 may thus pivot between its closed position in which it extends in a plane perpendicular to the direction I of sliding and a retracted position (shown in dot-dash lines in FIG. 4) 32' in which it is parallel to the plane of the drawer 26 and thus clears the window 22 in order to permit insertion of the card into the compartment of the drawer. In the exit or open position of the drawer, the card can be installed by inserting it in a direction parallel to the plane of the card without having to deform it. This operation is facilitated by a bevel 64 formed on the front free edge of the face 18 of the half-casing 14.
The board 24 comprises, in particular, an electronic circuit and its components (not shown) for exploitation of the data contained in the card C.
The board comprises a recess 70 for fitting a connector 72 whose contact elements 73 are provided in order to interact with the conducting points or tracks of the corresponding main face of the card C.
The conducting face 25 of the printed circuit board 24 also comprises a controlled electrical contact element or switch means 74 which can be actuated from the outside of the case 10 by elastically deforming the opposite face 16 of the casing, which comprises a snug 76.
The face 25 of the board 24 also comprises conducting poles 78 for the connection of batteries 80 contained in the casing.