JPH0119277Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a magnetic medium reader that records and reproduces information by moving a magnetic head in sliding contact with the medium.

Conventionally, as shown in FIG. 1, a magnetic medium reader inserts and stops a magnetic recording strip 2 attached to the back of a magnetic passbook 1 as a magnetic medium into a magnetic medium path 13, and then opens a magnetic head 3 into the medium path 13. It protrudes from an elongated window hole 14, runs in the direction of the hole, and slides against the magnetic recording band 2 to record or reproduce information.

As shown in FIG. 2, the support structure for the magnetic head 3 is such that a lever 6 is rotatably attached to a holding plate 18 that is slidable on a base frame 21, and a pin is attached to a supporting plate 5 fixed to one end of the lever 6. The magnetic head 3 is rotatably attached at 16 and can be tilted within the range of the head rotation angle α using the pin 16 as a fulcrum. The roller 20 is configured to be pushed down from the cam surface 7a of the position regulating plate 7 provided on the base frame 21 to the lower side of the cam surface 7b, so that when the bankbook 1 is inserted, the magnetic head 3 is pulled to the edge of the bankbook 1. A large amount of evacuation is made so that the passbook will not be damaged in the event of an accident.

However, because the magnetic head 3 is rotatably supported, the magnetic head 3 is often tilted when it is in the home position or end position, and in such cases, it is difficult to read the magnetic head 3 again. When it comes into contact with the magnetic recording band 2, it comes into contact obliquely.

For this reason, after the magnetic head 3 contacts the magnetic recording band 2, it takes time for the magnetic head 3 to become perpendicular to the magnetic recording band 2 and start normal sliding movement, which reduces write jitter and prevents correct recording and reproduction. It had the disadvantage that it was not carried out. Furthermore, if the magnetic head is tilted, there is a risk that it will hit the edge of the elongated aperture 14.

SUMMARY OF THE INVENTION It is an object of the present invention to propose a magnetic media reader that eliminates the above-mentioned drawbacks and allows the magnetic head to maintain a normal posture even when the magnetic head stops at the home position or end position.

The present invention is characterized in that the magnetic head is rotatably supported on a lever, the lever is rotatably supported on a holding plate running in the direction of the medium, and between the magnetic head and the holding plate, Rotation regulating means is provided for regulating the rotation of the magnetic head when the magnetic head is in the lowered position and allowing the magnetic head to freely rotate when the magnetic head is in the position of sliding contact with the medium. That's true.

The present invention will be explained below with reference to illustrated embodiments. 1, 3 and 4, a magnetic medium passage 13 is formed by frame plates 11 and 12, and a magnetic medium such as a magnetic recording band 2 of a magnetic passbook 1 is inserted into the lower medium. An elongated window hole 14 is formed in the passage 13, and the magnetic recording strip 2 is attached to the back of the passbook and protrudes from the window hole 14. A magnetic head 3, which runs in the direction of the hole, slides into contact with the magnetic recording strip 2 to record information. is being regenerated. A print section 15 is arranged ahead of the window hole 14 position of the medium path 13.

The window hole 14 is formed in the magnetic medium path 13 in a direction perpendicular to the direction in which the bankbook 1 is inserted.

The magnetic head 3 is attached to a head holder 4, which is swingably held by a support plate 5 with a pin 16, and the support plate 5 is fixed to a lever 6. The lever 6 is rotatably held on a holding plate 18 by a shaft 17 and is biased toward the passbook by a spring 19, thereby forming part pressure generating means. The lever 6 is provided with a roller 20 and the cam surface 7 of the position regulating plate 7 attached to the base frame 21
It is in contact with the cam surface 7b from the point a.

The holding plate 18 is held by two guide rods 22, 22, and is provided so as to be movable laterally with a screw 23.

Rotation regulating plates 8 and 9 are fixed to one side of the head holder 4 of the magnetic head 3 and one side of the holding plate 18, respectively, and one side of the magnetic head 3 has an engagement plate formed of a long hole that widens downward. A portion 8a is formed, a pin 10 is fixed to the other side, and the pin and the engaging portion are fitted and engaged, so that the magnetic head 3 can slide in the two directions of the magnetic recording band, and the magnetic head 3 is shown in FIG. A rotation restricting means is configured to restrict rotation of the magnetic head 3 when it is in the lowered position.

When the magnetic medium reader is configured as described above and the magnetic head 3 is being fed by the screw 23, the roller 20 comes into contact with the cam surface 7a of the position regulating plate 7, and the magnetic head 3 rises to perform magnetic recording. The roller 20 is moved in sliding contact with the belt 2, and at the leftmost home position and rightmost end position of the reciprocating movement shown in FIG. Rotation regulating plate 8,
9 and the pin 10.
When retracted, the solid line in FIG. 4 stands up substantially vertically.
Note that at the position indicated by the one-dot chain line in FIGS. 3 and 4, the engaging portion 8a is wider than the width of the pin 10, so the magnetic head 3
can be oscillated within this range and can move to follow the bending of the medium.

Therefore, since the sliding contact surface of the magnetic head 3 is held downward parallel to and perpendicular to the magnetic recording band 2, when the magnetic head contacts the magnetic recording band again, it immediately contacts the magnetic recording band perpendicularly. Since normal sliding contact is started, a drop in write jitter is prevented, and correct recording and playback can be performed.

In the above description, it was described that the rotation regulating plate 8 provided with the long hole engaging portion 8a is fixed to the head holder 4, and the rotation regulating plate 9 to which the pin 10 is fixed is fixed to the holding plate 18, respectively. The regulating plate 8 may be fixed to the holding plate, and the rotation regulating plate 9 may be fixed to the head holder. Further, the rotation regulating plate 9 on the pin 10 side may be omitted and fixed directly to the holding plate or head holder.

Furthermore, the engaging portion of the elongated hole may be configured with a U-shaped notch. The rotation angle of the magnetic head can be changed by changing the width of the elongated hole or U-shaped notch to make it wider or narrower.

Since the present invention is constructed as described above, the sliding surface of the magnetic head can be kept horizontal by a simple rotation regulating means in which an engaging portion is provided on one side of the holding plate and the magnetic head holder, and a pin is provided on the other. Since the head does not hit the magnetic recording strip diagonally and does not have to move further than necessary for evacuation, the magnetic head and the magnetic recording strip come into contact instantly at the start of sliding contact, and normal writing and reading can be performed. , the worsening of jitter is eliminated. Further, since the rotation of the magnetic head is restricted and controlled by stopping at the home position or the end position, and the magnetic head is moved up and down vertically, even if the width of the window through which the head projects is made small, the risk of hitting the edge is eliminated. Furthermore, since the magnetic head does not tilt in the home position or the end position, it is possible to provide a magnetic medium reader which has excellent practical effects such as the edge of the bankbook does not hit the magnetic head and get in the way when the bankbook is inserted.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram of the medium path of a magnetic medium reader.
Fig. 2 is an explanatory diagram of the rotation of the magnetic head in the conventional home position, Fig. 3 is a front view of main parts of the magnetic medium reader of the present invention, and Fig. 4 is a cross-sectional side view taken along line A-A in Fig. 3. . 1... Magnetic bankbook of magnetic medium, 3... Magnetic head, 6... Lever, 8, 9... Rotation regulating plate, 8a
...Engaging portion, 10...Pin, 13...Magnetic medium path, 14...Window hole, 18...Holding plate.

Claims (1)

[Scope of utility model registration request] In a magnetic media reader that records or reproduces information by moving a magnetic head in sliding contact with the medium, the magnetic head is rotatably supported by a lever, and the lever is rotated by a holding plate that allows the lever to run along the medium. By movably supporting the magnetic head, the magnetic head can move between a sliding position with the medium and a lowered position away from the medium, and the magnetic head is disposed between the magnetic head and the holding plate. A rotation regulating means is provided for regulating the rotation of the magnetic head when the magnetic head is in the lowered position, and for allowing the magnetic head to freely rotate when the magnetic head is in a position in sliding contact with the medium. magnetic media reader.