JPS642297Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic card reader, and more particularly to a mounting structure for a magnetic head.

FIG. 1 is a sectional view of a conventional magnetic head mounting structure, and FIG. 2 is a sectional view taken along the line A--A.

The magnetic head 1 is pivoted at its rear part by a rod-shaped spring 3 extending parallel to the running direction of the magnetic card 2 as indicated by an arrow in the figure, and extends from a window 41 formed in a card running guide frame 4 into a card running guide groove 42. The head surface is slightly pushed inward. The spring 3 is loosely fitted into grooves 44 provided in a magnetic head guide plate 43 on both sides of the magnetic head 1, and both ends are fitted into holes 46 formed in a protrusion 45 of the guide frame 4, respectively. This magnetic card reader is a so-called traveling type magnetic card reader that slides the magnetic card 2 along the guide groove 42.

According to this mounting structure, the magnetic head 1 can be displaced in a direction perpendicular to the running direction of the magnetic card 2 by the action of the spring 3. However, since the spring 3 is loosely fitted to the magnetic head 1, the magnetic head 1 is subject to the action of gravity when no magnetic card is inserted into the guide groove 42, as shown in FIG. It will not be perpendicular to the card running surface but will face downward. Also, even when a magnetic card is inserted and tries to contact the magnetic head, the magnetic head 1 is not directly facing the magnetic card surface. In other words, there is a drawback that it takes a long time to turn until the two are facing each other.

Further, the magnetic card 2 is inserted into the guide groove 4 from above the magnetic head 1 in a direction perpendicular to the card running direction.
When the magnetic card 2 is inserted into the magnetic head 1
Not only is it difficult to insert the magnetic head 1 and the magnetic card 2 into the guide groove 42, but there is a risk of damaging the magnetic head 1 and the magnetic card 2.

The present invention aims to provide a magnetic card reader that eliminates the above-mentioned drawbacks with a simple structure.

The present invention provides a stopper on the magnetic head which is urged by a bar spring so as to enter the card running guide groove, and this stopper locks the magnetic head to the card running guide frame, thereby guiding the card running of the magnetic head. The size of the card protruding into the groove is made constant, and the magnetic card is always positioned perpendicular to the wall surface of the card running guide groove even when no magnetic card is inserted. As a result, when the magnetic card is inserted into the magnetic head portion, the rotation distance or time required for the magnetic head to come into close contact with the magnetic card surface, that is, to directly face it, is shortened.

Examples of the present invention will be described below.

FIG. 3 is a sectional view of a main part of an embodiment of the present invention, and FIG. 4 is a sectional view taken along the line B--B.

In FIG. 3, magnetic head guide plates 43, 43 are provided slightly apart from the edge of a window 41 provided in the card running guide frame 4, forming stepped portions 47, 47. A box-shaped stopper 5 is fixed to the rear of the magnetic head 1. This stopper 5
The size of the two magnetic head guide plates 43, 43
Although it can fit between the windows 41 and 41, it is made larger than the window 41 so that the magnetic head 1 can move only backwards from the position shown in the figure. The magnetic head 1 is connected to this stopper 5.
The magnetic card 2 is pivoted by a rod-shaped spring 3 extending in the direction in which the magnetic card 2 travels. As in the conventional case, the rod-shaped spring 3 is loosely fitted into grooves 44, 44 formed in magnetic head guide plates 43, 43 on both sides of the magnetic head 1, and both ends thereof are fitted into holes 4 provided in protrusions 45, 45.
6,46. As a result, the magnetic head 1 is biased so that the stopper 5 comes into pressure contact with the stepped portions 47, 47. Of course, Stoppa 5 is
It may be a substantially U-shaped plate material that abuts the step portions 47, 47.

The width of the card running guide groove 42 is made larger than the thickness t of the magnetic card 2, but since the magnetic head 1 is designed to slightly protrude into the guide groove 42, the head surface of the magnetic head 1 and The distance l between the opposing wall surface of the guide groove 42 is made slightly smaller than the thickness t of the magnetic card 2.

According to this structure, since the stopper 5 fixed to the magnetic head 1 has a cross-sectional shape, a force is applied to the entire area of the magnetic head 1 in the direction shown by the arrow in FIG. 47, 47, and is pressed in a direction in which they are in close contact with each other.
This allows the magnetic head 1 to directly face the wall surface of the guide groove 42, minimizing the rotation of the magnetic head 1 following the inclination of the magnetic card 2, and allowing the magnetic head 1 to face the magnetic card surface. It will adhere smoothly to the Furthermore, even when the magnetic card 2 is inserted into the guide groove 42 in a direction perpendicular to the card running direction, that is, from above the magnetic head 1, the magnetic head 1 enters the guide groove 42 in the state shown in FIGS. 2 and 4. As is clear from the comparison, the present invention is superior. That is, the distance l between the head surface of the magnetic head 1 and the wall surface of the guide groove 42 is
Since it is wider when the guide groove 42 is directly facing the wall surface of the guide groove 42, the magnetic card 2 can be easily inserted.
There is no risk of damaging the magnetic card 2 and magnetic head 1.

As explained above, according to the present invention, a simple plate-like member is fixed to a magnetic head, and
Since the magnetic head can be regulated perpendicularly to the card running surface, the magnetic card can be smoothly brought into close contact with the magnetic card surface when inserted, and the magnetic card can also be inserted from above the magnetic head. As a result, it is possible to provide a low-cost and highly reliable magnetic card reader that has the advantage of always providing stable input/output signals for recording and reproducing.

FIG. 5 is a sectional view of another embodiment of the present invention taken from the same direction as FIG. 4.

An annular or U-shaped stopper 5 is provided around the side of the magnetic head 1, but in some cases two stoppers may be provided on opposite side walls of the magnetic head 1.

The present invention has been described in detail above, and the present invention makes it possible to always obtain stable input/output signals for recording and reproduction, and to provide a highly reliable magnetic card reader at a low price.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing an example of the main part structure of a conventional magnetic card reader, Fig. 2 is a sectional view taken along the line A-A, Fig. 3 is a sectional view of the main part of an embodiment of the present invention, and Fig. 4 is its sectional view. B
5 is a sectional view of another embodiment of the present invention. In the figure, 1 is a magnetic head, 2 is a magnetic card, 3 is a bar spring, 4 is a card running guide frame, and 5 is a stopper.

Claims (1)

[Scope of utility model registration request] In a magnetic card reader in which a magnetic head is biased by a rod-like spring so as to enter a card running guide groove, when a magnetic card is not inserted, the head surface of the magnetic head and the card running guide groove opposite thereto are connected to each other. A magnetic card reader characterized in that a stopper is provided on the magnetic head for regulating the magnetic head so that a distance l between the magnetic head and the wall surface is smaller than a thickness t of the magnetic card and perpendicular to the wall surface.