JPH0319056Y2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application This invention relates to a magnetic head device that is installed, for example, in a card reader of an automatic teller machine used in banking.

(b) Prior Art Conventionally, a magnetic head device such as the one described above is installed in the scanning mechanism of a card reader, and performs magnetic processing such as reading and writing by scanning the magnetic stripe surface of an inserted magnetic card. was going there.

(c) Problems that the invention aims to solve: However, since the magnetic head is fixed to the scanning mechanism, it is not possible to finely adjust the magnetic head surface relative to the magnetic stripe surface, which reduces the magnetic processing function. There was a risk of an unstable read/write state.

Therefore, the object of this invention is to provide a magnetic head device that can perform stable magnetic processing without inducing deterioration of the magnetic processing function.

(d) Means for solving the problem This invention provides a magnetic head device in which a scanning table on which a magnetic head is mounted is supported slidably in the scanning direction by a spindle, and is driven in the scanning direction by a scanning table driving means. The magnetic head is attached to a head holder, the head holder is pivoted to the scanning table so as to be rotatable in a direction in which the skew of the magnetic head surface can be adjusted, and the skew adjustment position can be fixed. A skew adjustment means is provided to enable the scanning table to rotate about a support shaft, and a guide shaft is provided parallel to the support shaft, and a support for the scanning table is provided between the guide shaft and the scanning table. The present invention is characterized in that the magnetic head device is provided with a magnetic head contact adjusting means for adjusting and fixing the position and adjusting the tilting of the magnetic head surface in a direction intersecting the scanning direction.

(E) Effect In the magnetic head device of this invention, when the magnetic head surface is skewed with respect to the scanning direction, the skew adjustment means rotates the head holder in the skew adjustment direction with respect to the scanning table to adjust the magnetic head. In addition, if the magnetic head surface makes uneven contact with the magnetically processed object such as a magnetic card, use the magnetic head contact adjustment means to rotate the scanning table about the spindle. By adjusting the tilting movement, the contact state of the magnetic head is adjusted to the full contact state.

(f) Effects of the invention As a result of the above, according to this invention, the skew means can finely adjust the skew of the magnetic head surface in the scanning direction, and for example, when the object to be magnetically processed is a magnetic stripe having multiple tracks. In this case, the magnetic head surface is made to correspond to the plurality of tracks, and a highly accurate magnetic processing function can be obtained.

Furthermore, the magnetic head contact adjustment means allows the magnetic head surface to be in optimal contact with the magnetic surface of the object to be magnetically processed, thereby ensuring that the magnetic head surface is in a stable contact state. Read/write magnetic processing can be performed.

(F) Embodiment of the invention An embodiment of the invention having the above characteristics will be described in detail below based on the drawings.

The drawing shows a magnetic head device installed in a card reader, which includes a magnetic head 1, a head holder 2 for holding the magnetic head, a scanning table 3 for pivotally supporting the head holder, and a scanning table for moving the scanning table in a magnetically compatible direction. That is, a scanning table driving device 4 for moving the scanning table forward and backward in the direction of performing magnetic processing such as magnetic reading or magnetic insertion, and a scanning table driving device 4 for adjusting the tilting of the scanning table to adjust the contact of the magnetic head surface 5 with the object to be magnetically processed. It is comprised of a magnetic head contact adjustment mechanism 6 and a skew adjustment mechanism 7 for rotationally adjusting the head holder to perform skew adjustment of the magnetic head surface in the magnetic processing direction.

The above-mentioned head holder 2 is provided in the shape of a rectangular flat plate, and has a pair of locking protrusions 8, 8 protruding from its upper surface for bolting and attaching the magnetic head 1, and a scanning plate, which will be described later, in the center. A pivot hole 9 that is pivoted to the pivot shaft 11 of the stand 3 is provided vertically through the shaft, and a hanging piece 1 on the side surface is used to attach a skew adjustment mechanism 7 to be described later.
0 is placed vertically.

The above-mentioned scanning table 3 has a pivot shaft 11 protruding from the center of the upper surface, and a pivot hole 9 of the above-mentioned head holder 2 is connected to the pivot shaft 11.
is inserted through the head holder 2, and the head holder 2 is pivotally mounted to be horizontally rotatable about the pivot 11 as a fulcrum. and,
A support hole 12 is provided in the upper part of the side surface, and this support hole 12 is fitted onto and slidably supported by a support shaft 14 horizontally suspended between frames 13 on both sides.

Further, a threaded hole 15 parallel to the above-mentioned support hole 12 is provided in the lower part of the side surface, and a feed screw 18 of the scanning table driving device 4, which will be described later, is screwed into this hole so that the scanning table 3 can be freely scanned. It will be done. Further, a contact adjustment mechanism 6 for the magnetic head 1, which will be described later, is attached to the lower surface.

The above-described scanning table driving device 4 includes a forward/reverse motor 16 fixed to a frame on one side, and the motor 16.
a drive pulley 17 that is pivoted on the main shaft of the drive pulley 17, a feed screw 18 that is horizontally suspended between frames 13 on both sides facing each other with a scanning movement distance apart, and a driven pulley 19 that is pivoted on the outer end of the screw. It is composed of a drive belt 20 stretched between these pulleys 17 and 19.

Based on the drive of the forward/reverse motor 16,
The feed screw 18 is rotated forward and backward, thereby scanning the scanning table 3 so as to move forward and backward.

The magnetic head contact adjustment mechanism 6 described above is attached to the scanning table 3.
a connecting plate 21 connected to the lower surface of the connecting plate 21; and an eccentric guide roller 22 attached to the connecting plate 21 so as to be tightenable and loosenable;
A fulcrum pin 23 vertically installed on the lower surface of the scanning table 3, and a pivot lever 24 whose one end is pivoted to the fulcrum pin 23.
, a guide roller 25 that is vertically provided on the lower surface of the other end of the pivot lever 24 , and a spring 26 that is stretched between both rollers 22 and 25 .

The above-mentioned eccentric guide roller 22 has a flange 27 for roller height positioning and gripping formed on the upper side of the eccentric shaft, a guide roller 28 attached to the lower side, and a threaded portion at the upper end of the eccentric shaft formed with a nut 29. It is fixed to the connecting plate 21 so that it can be tightened and loosened at will, and the spring 2 is inserted into the groove at the lower end.
6 is locked at one end.

The guide roller 25 described above has a guide roller 30 attached to the center of the shaft at the same height as the eccentric roller 28, the upper end of the shaft is fixed to the pivot lever 24, and the lower end is fixed to the pivot lever 24. The other end of the spring 26 described above is locked in the same groove. As a result, both guide rollers 22 and 25 are attracted to each other, and the guide roller 25 side is urged toward the eccentric guide roller 22 side using the fulcrum pin 23 as a fulcrum, while these rollers 22 and 2
A sliding guide shaft 31 parallel to the support shaft 14 is interposed between the rollers 22 and 25.
1 is slidably attached while holding it in place.

Then, after loosening the nut 29 of the eccentric guide roller 22 and changing the eccentric position of the roller as appropriate, if the eccentric guide roller 22 is fixed again, the scanning table 3 will move the support shaft 14 in the direction of the arrow in FIG. The magnetic head 1 is tilted to the fulcrum, and the magnetic head 1 is also tilted in the same direction to achieve optimal magnetic contact adjustment of the magnetic head surface 5 with the magnetically processed object.

The above-mentioned skew adjustment mechanism 7 is attached to the head holder 2.
A vertical piece 10, an insertion hole 32 passed through the vertical piece 10, a screw hole 33 on the side of the scanning table bored on the opposite surface of the insertion hole, and these vertical pieces 10 and the scanning table 3.
the coil spring 34 interposed between the insertion hole 3
2 and a skew adjustment screw 35 screwed into a screw hole 33 of the scanning table via a coil spring 34.

Then, loosen the fixing screw 36 of the head holder 2, rotate the skew adjustment screw 35, and rotate the coil spring 3.
After adjusting the rotation of the head holder 2 to the desired position based on the spring pressure adjustment in step 4, the head holder 2 is fixed by tightening the fixing screw 36 again. It is rotated about the fulcrum and precise fine adjustment is performed on the magnetically compatible surface, that is, parallel to the magnetic processing direction (or scanning direction).

In the magnetic head device configured as described above, the scanning table 3 is moved forward and backward in the magnetic processing direction such as reading and writing via the scanning table driving device 4, and the magnetic head surface 5 is moved, for example, in the direction of magnetic processing such as reading and writing. Magnetic processing for reading and writing is performed in a contact state suitable for the magnetic stripe surface of the magnetic card as an object.

If the magnetic head surface 5 makes partial contact with the magnetic stripe surface, the magnetic head contact adjustment mechanism 6 may be adjusted, and based on this adjustment, the entire magnetic field of the scanning table 3 can be adjusted in the magnetically compatible direction.
The magnetic head surface 5 is tilted so as to contact the surface of the object to be magnetically processed in a parallel state, and the contact state of the magnetic head surface 5 is adjusted to the optimum state.

Further, if the magnetic head surface 5 does not correspond parallel to the plurality of tracks of the magnetic stripe, the skew adjustment mechanism 7 may be adjusted, and the head holder 2 is rotated based on this adjustment, and together with the above-mentioned The magnetic head surface is rotated to a position parallel to the track direction.

In the above embodiment, the magnetic head device is adapted to a card reader, but the present invention may be applied to other magnetic processing devices that perform reading and writing.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention, with FIG. 1 being an exploded perspective view of the main parts of the magnetic head device, FIG. 2 being a plan view showing its use, and FIG. 3 being a side view thereof. 1...Magnetic head, 2...Head holder, 3...
... Scanning table, 4 ... Scanning table driving device, 5 ... Magnetic head surface, 6 ... Magnetic head contact adjustment mechanism, 7 ...
Skew adjustment mechanism, 11... Pivot, 14... Support shaft, 31... Guide shaft.

Claims (1)

[Claims for Utility Model Registration] A magnetic head device in which a scanning table on which a magnetic head is mounted is slidably supported in the scanning direction by a support shaft, and is driven in the scanning direction by a scanning table driving means, the magnetic head being is attached to a head holder, and the head holder is pivoted to the scanning table so as to be rotatable in a direction in which the skew of the magnetic head surface can be adjusted. The scanning table is made rotatable about a support shaft, and a guide shaft is provided parallel to the support shaft, and between the guide shaft and the scanning table,
A magnetic head device comprising magnetic head contact adjustment means for adjusting and fixing the support position of a scanning table and adjusting the tilting of a magnetic head surface in a direction intersecting the scanning direction.