IC card reader with means for inserting and withdrawing an IC card

An IC card reader for reading an IC card, or reading and writing the IC card, the IC card reader including a withdrawing member (16) for withdrawing the IC card (5) and an L-shaped member (9) engaged with a projection (6) of the withdrawing member (16) for moving the IC card (5). The L-shaped member (9) is rotatably mounted on a door (7) of the IC card reader (1) for withdrawing the IC card (5) by opening the door (7). When the door (7) is opened, the IC card (5) is withdrawn, and when the IC card (5) is to be inserted, it is pushed in by closing the door (7). The card reader is sealed by the closed door (7).

TECHNICAL FIELD 
The present invention relates to an IC card reader, and more specifically, 
to an IC card reader provided with a simple arrangement by which an IC 
card can be easily inserted to and withdrawn from the reader. 
BACKGROUND ART 
With the development of semiconductor technology the degree of memory 
integration has been increased, and thus an IC card now can be applied to 
a numerical control apparatus, a PC (programmable controller) and the like 
as an external memory. In practice, an IC card reader is used to read the 
IC card and write data thereto. In this process, the IC card is manually 
inserted into and withdrawn from a connector by hand or by using a fitting 
or the like provided at the connector. 
An IC card reader applied to a numerical control apparatus and the like is 
often used in an adverse environment, such as in a metal processing 
factory and the like, and thus must be made airtight to protect electronic 
components such as semiconductors accommodated therein. Nevertheless, the 
conventional IC card reader must have an opening for use as an insertion 
port, and an IC card reader enabling an IC card to be inserted into and 
withdrawn from the reader while maintaining the interior thereof in an 
airtight condition is not known in the prior art. Although a non-contact 
type IC card has been disclosed in an attempt to solve this problem, the 
cost thereof is very high. 
DISCLOSURE OF THE INVENTION 
Taking the above into consideration, an object of the present invention is 
to provide an IC card reader provided with a simple arrangement by which 
an IC card can be easily inserted into and withdrawn from the reader. 
To solve the above problem, in accordance with the present invention, there 
is provided an IC card reader for reading an IC card, or reading and 
writing an IC card, comprising a withdrawing member engaged with an edge 
of the IC card for withdrawing the IC card and an L-shaped member engaged 
with a projection of the withdrawing member for moving the IC card, the 
L-shaped member being rotatably mounted on a door of the IC card reader 
for withdrawing the IC card by opening the door. 
As the door is opened, the withdrawing member for withdrawing the IC card 
is moved by the L-shaped member mounted on the door in such a manner that 
the IC card is withdrawn from the reader. Conversely, when the IC card is 
to be inserted into the reader, it is pushed therein by closing the door.

BEST MODE OF CARRYING OUT THE INVENTION 
An embodiment of the present invention will be described below with 
reference to drawings. 
FIG. 1 is a cross sectional view of an IC card reader according to the 
present invention, wherein 1 designates a housing of the IC card reader, 
and 2 designates a guide fixed to the housing 1 by members 3 and 4, for 
guiding the IC card. 
In FIG. 1, 5 designates an IC card engaged with a withdrawing member 16 for 
withdrawing the IC card 5. The withdrawing member 16 is provided with a 
projection 6. Designated at 7 is a door, shown in the open state in FIG. 
1. This door 7 is rotatable about a shaft 8 and is provided with an 
L-shaped member 9 rotatably attached to a shaft 10. The L-shaped member 9 
is engaged with the projection 6 of the withdrawing member 16 through a 
hole defined at the upper portion of a member 11. Accordingly, when the 
door 7 is turned in a direction shown by an arrow C in FIG. 1, the IC card 
5 is withdrawn in a direction shown by an arrow B in FIG. 1. 
Further in FIG. 1, 12 designates an eject button and 13 designates a latch 
for fixing the door 7. The latch is arranged to turn about a shaft 14. 
FIG. 2 shows the above embodiment of the invention in the state in which 
the door 7 is closed. The same numerals as used in FIG. 1 are used to 
denote the same parts in FIG. 2. As shown in FIG. 2, the door is kept 
closed by an engagement between a projection 7a of the door 7 and the 
distal end of the latch 13. 
The printed circuit boards and the like usually accommodated in the 
interior of the IC card reader are not shown in FIG. 1 and FIG. 2. 
FIG. 3 is a partial plan view taken along the arrow A of FIG. 1, wherein 5 
designates the IC card and 16 designates the withdrawing member provided 
with the projection 6 for withdrawing the IC card. The withdrawing member 
and, consequently the IC card are pulled to the right of the figure by the 
L-shaped member 9 as the door is opened. The withdrawing member 16 has an 
arm extending inwardly at each side of its inner end for engaging an edge 
of the IC card. 
As described above, since the IC card is pulled out by the L-shaped member 
attached to the door, it is not necessary to withdraw the IC card by hand 
or the like. In addition, since the interior of the IC card reader is 
sealed by the door whether the IC card is inserted or not inserted, the 
reliability of the IC card reader is improved. Moreover, the IC card 
reader can be used in an adverse environment such as with a numerical 
control apparatus used in a metal processing factory and the like. 
As described above, according to the present invention, since the IC card 
is withdrawn by the L-shaped member attached to the door, it can be 
withdrawn with a simple arrangement of merely opening the door. 
Further, since the IC card reader is sealed regardless of whether or not 
the IC card is inserted, it can be used in an adverse environment such as 
in a metal processing factory and the like.