JPH0617221Y2 - Magnetic head transport mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a magnetic head transport mechanism of a magnetic card reader that is reciprocally moved by being coupled with a transport belt that rotates in one direction.

<Prior Art> Conventionally, a transport mechanism is used to move a magnetic head of a magnetic card reader for reading from a magnetic medium in contact with the magnetic medium. Conventionally, this type of transport mechanism has means for screwing a screw hole in a magnetic head holder to which a magnetic head is attached, inserting a screw rod into the screw hole, and rotating the screw rod to reciprocate the magnetic head holder. . In addition, there is a means for directly attaching the magnetic head holder to a conveyor belt spanning pulleys provided at both ends of the passage of the magnetic head holder and causing the magnetic head to directly run by moving the conveyor belt.

<Problems to be solved by the invention> However, the screw rod for moving the magnetic head by means of the former screw rod transportation must be longer than the recording range of the magnetic head, and the magnetic head holder also has the screw rod penetrating. As a result, the size becomes large, and mechanical precision such as pitch and warpage is required, which is expensive. On the other hand, the latter means for transporting by means of the belt has a drawback that since the magnetic head reciprocates, it is necessary to switch the rotation direction of the belt itself to the forward and reverse directions, and the rotation cannot be unidirectionally controlled. .

<Means for Solving Problems> In the present invention, the magnetic head transport mechanism of a magnetic card reader for reciprocally moving a magnetic head holder (1) on which a magnetic head is mounted along a magnetic card, excluding the conventional drawbacks described above. In the above, two pulleys (12, 12 ') provided at positions corresponding to both ends of the recording range of the magnetic card, and a conveyor belt (10) hung between the two pulleys and rotating in one direction. ), A hook (11) projectingly provided on the outer surface of the conveyor belt, and a hook receiver (7) connected to the hook at the tip, and the other end of which is erected on the magnetic head holder. (6) An arm (3) rotatably attached to the magnetic head transport mechanism.

<Operation> When the conveyor belt rotates in a certain direction, the magnetic head holder is reciprocated by the coupling arm that is coupled to the hook protruding from the conveyor belt.

<Embodiment> An embodiment of the magnetic head carrying mechanism of the present invention is shown in the external perspective view of FIG.

As shown in the drawing, there is provided a terminal portion 2 to which a magnetic head (not shown) is mounted, and guide holes 4 which are parallel to the magnetic card and through which guide rods 5 and 5 'penetrate so that the magnetic card and the magnetic head are always in close contact with each other. , 4'is pierced to form the magnetic head holder 1. As shown in FIG. 2, a hook holder 7 is attached to the tip bent at a right angle in the center of the upper surface of the magnetic head holder 1.
The other end of the arm 3 provided with is attached rotatably by a pin 6. Further, between the two guide rods 5 and 5 ', the endless conveyor belt 10 is attached to the pulleys 12 and 12' which are vertically attached to both ends of the magnetic head holder 1 outside the moving range of the magnetic head.
Spread out. A plurality of hooks 11 are projectingly provided at one location on the outer circumference of the conveyor belt 10, and the hooks 11 are connected to the hook receivers 7 of the arm 3 to form a magnetic head conveyor mechanism.

Now, as shown in FIGS. 3 and 4, when the conveyor belt 3 rotates and moves in the direction of the arrow X with the hook 11 and the hook receiver coupled, when the conveyor belt 3 slides and reaches the point A, the arm 3 Rotates as the conveyor belt 10 moves,
When the straight line portion is reached again, the magnetic head holder 1 moves in the direction of arrow X '. Further, the arm 3 reaching the point B again rotates to reach the linear portion of the conveyor belt 10 and the magnetic head holder 1 linearly moves. Therefore, the magnetic head holder 1
Are the arrows X and X'according to the movement of the conveyor belt 10, respectively.
Move in the opposite direction. It should be noted that the magnetic head holder 1 can be reciprocally moved without any problem even if the moving direction of the conveyor belt 10 is reversed.

Here, in order to prevent the conveyor belt 10 from escaping in the direction opposite to the arrangement position of the hook 11 when a load variation occurs on the hook 11, a belt escape prevention plate 8 is provided in the gap between the linear portions where the conveyor belt 10 reciprocates. Therefore, when the belt escape prevention plate 8 is provided, the change in the moving speed of the conveyor belt 10 becomes small, and the magnetic head holder 1 moves at a speed close to a constant speed.

As shown in FIG. 5, the hook 11 and the hook receiver 7 are connected by, for example, providing three hook receivers 7 for three hooks 11 to improve the connection, and one hook 11 as shown in FIG. The hook receiver 7 is fitted in parallel with the hook 11. As shown in FIG. 7, the hook 11 has a wedge-shaped cross section to prevent the hook 11 from falling off. Further, as shown in FIG. 8, the hook receiver 7 is made higher than the height of the hook 11 to prevent the hook from falling off. Further, as shown in FIG. 9, there is an example of a means shape in which the hook receiver 7 has an arc-shaped cross section to smoothly rotate the rotating portion of the arm 3.

<Advantages of the Invention> As described above, according to the present invention, an inexpensive conveyor belt 1 that does not require an expensive screw rod with high processing accuracy as in the conventional case is used.
By using 0, the magnetic head can be moved correctly, contact with the magnetic card can be improved without damaging the magnetic head, and a magnetic head transport mechanism of a magnetic card reader with few malfunctions can be obtained.

[Brief description of drawings]

1 is an external perspective view of an embodiment of the magnetic head transport mechanism of the present invention, FIG. 2 is an enlarged perspective view of the arm portion of FIG. 1 with a part cut away, and FIG. 3 is a magnetic view of the present invention. FIG. 4 is a schematic structural view showing the operation of the head transport mechanism, FIG. 4 is an enlarged perspective view of a part of the operating structure at the position of the pulley in FIG. Three
6 and 9 are external perspective views and cross-sectional views showing the combined state of one hook and one hook receiver, respectively. 1 ... Magnetic head holder, 2 ... Terminal part, 3 ... Arm, 4, 4 '... Guide hole, 5, 5' ... Guide rod, 6
...... Pin, 7 …… Hook receiver, 8 …… Belt escape prevention plate,
10 ... Conveyor belt, 11 ... Hook, 12, 12 '...
… Pree.

Claims (1)

[Scope of utility model registration request] 1. A magnetic head transport mechanism of a magnetic card reader for reciprocating a magnetic head holder (1) on which a magnetic head is mounted, along a magnetic card, at positions corresponding to both ends of the recording range of the magnetic card. Two pulleys (12, 12 ') provided, a conveyor belt (10) which is hung between the two pulleys and rotates in one direction, and a hook (projected on the outer surface of the conveyor belt (10)). 11), and an arm (3) having a hook receiver (7) coupled to the hook at its tip and the other end rotatably attached to a pin (6) provided upright on the magnetic head holder. And a magnetic head transport mechanism.