JP3121057B2 - Magnetic head support device for magnetic card reader - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic card reader for reading and writing magnetic cards used in cash cards, credit cards, prepaid cards, and the like, and more particularly to a magnetic head supporting device for the same.

[0002]

2. Description of the Related Art FIGS. 5 to 7 show examples of the structure of a conventional magnetic head support device for a magnetic card reader.

The magnetic head 21 is fixed to one end of a rigid head holder 22, and the other end of the head holder 22 is in contact with a hemispherical projection 26 c on a main body case 26. The head holder 22 is positioned so as to be vertically movable at two places in the card transport direction by guide pins 26a and 26b raised on the main body case 26. With the card guide path 27 provided in the main body case 26 interposed therebetween, the magnetic head 21 and the head opposing roller 23, the transporting feed roller 24, and the pad roller (card pressing roller) 2
5 are provided. Pressing of the magnetic head 21 is performed by a conical coil spring 28 pressing the center of the head holder 22, and the amount of pressurization is performed by a press adjusting screw 29 mounted on the main body case 26. Magnetic head 21 and opposed roller 23
Is adjusted with a gap adjusting screw 30 screwed to the tip of the head holder 22.

In the magnetic head supporting apparatus thus constructed, when the magnetic card 31 is transported by the transporting feed roller 24 and comes into contact with the magnetic head 21, the magnetic head 21 is pushed up together with the head holder 22 and is moved up by the coil spring 28. A spring pressure corresponding to the amount of deflection is applied to the magnetic head 21. When the curved magnetic card 31 or the deformed magnetic card 31 is conveyed, the two pins 26 a and 26 b on the center line of the head holder 22 and the hemispherical projection 26 c of the main body case 26 follow the curvature of the magnetic card 31. As a result, the magnetic head 21 swings right and left, and the magnetic head 21 comes into close contact with the magnetic card 31 so that data on the magnetic stripe can be read or data can be written on the magnetic stripe.

[0005]

However, in the above-described conventional configuration, when a normal flat magnetic card 31 is run in the card guide path 27, the magnetic head 21 and the magnetic card 31 are in close contact with each other, Head pressure is magnetic card 31
The information is uniformly applied to the surface, so that reading and writing of information on the magnetic card 31 can be performed with high accuracy. However, since the bottom surface of the coil spring 28 for pressurizing the magnetic head 21 is circular, the contact surface between the coil spring 28 and the head holder 22 is aligned on a straight line connecting the pins 26a and 26b, which are the center lines of the head holder 22. The magnetic card 31 or the deformed magnetic card 3
1, the swing of the magnetic head 21 becomes worse,
There is a disadvantage that the contact with the magnetic card 31 becomes worse.
In addition, in the case of a wide magnetic head 21 for a plurality of tracks, the above-described drawbacks are particularly significant, and the followability of a curved or deformed magnetic card 31 is poor.
In addition, the friction between the head holder 22 and the pins 26a and 26b prevents the head holder 22 from moving smoothly,
There was a problem that the positioning had to be set while measuring the height of the screw 29 for adjusting the pressure.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and provides a magnetic head supporting device which can obtain a magnetic card reader which has good followability of a magnetic head with respect to a curved or deformed magnetic card and has excellent read / write accuracy. With the goal.

[0007]

According to the present invention, there is provided a head holder for supporting a magnetic head, a rod-shaped arm fixed to the head holder and extending in the direction of transport of the magnetic card. A head holder and a rod-shaped arm are disposed on the upper surface side, a card guide path is formed on the lower surface side, and a protrusion contacting the rod-shaped arm on the upper surface, and the rod-shaped arm can be vertically moved in the transport direction. A main body case provided with a guide groove for restraining movement in a direction perpendicular to the main body, and a pressing member that abuts on a rod-shaped arm at an intermediate position between the magnetic head and the protrusion and presses this downward. The magnetic head is supported so as to be able to move up and down and rotate freely with a contact point between the rod-shaped arm and the projection as a fulcrum, and the magnetic head is directed toward the card guide path by the pressing member. Characterized in that the pressure was.

[0008]

According to the present invention, the magnetic head is supported by the contact point between the rod-shaped arm and the projection of the main body case as a fulcrum so that the magnetic head can be moved up and down and rotated freely, and a pressing member such as a torsion coil spring is used. Since the rod-shaped arm provided in the card transport direction is pressed against the head holder supporting the magnetic head, the magnetic head is prevented from vertical movement orthogonal to the card transport direction and rotational swing in the horizontal direction. When a magnetic card is conveyed to the card guide path, the adhesion between the magnetic card and the magnetic head is improved, and information can be read and written stably even on a curved or deformed magnetic card. And the reliability of the magnetic card reader is improved.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A magnetic head supporting device for a magnetic card reader according to one embodiment of the present invention will be described below with reference to FIGS.

1 to 3, reference numeral 1 denotes a magnetic head, 2
Denotes a head holder made of a resin material, and the magnetic head 1
Are bonded and fixed to the head holder 2 with a resin or the like.
A metal round bar (bar-shaped arm) 3 is embedded at the center of the head holder 2 in the width direction orthogonal to the magnetic card transport direction so as to be along the magnetic card transport direction. Reference numeral 4 denotes a multi-turn torsion coil spring (pressing member) for pressurizing the magnetic head, and a tip 4a extending in a direction orthogonal to the magnetic card conveying direction presses one end of the round bar 3 near the magnetic head 1, The magnetic head 1 is pressed.

Reference numeral 5 denotes a main body case having a card guide path 6, on the upper surface of which a semicircular projection 5a and a pedestal 5b project at appropriate intervals in the card transport direction, and each of which has a central portion of the round bar 3. And guide grooves 5c and 5 for engaging and holding the other end.
d is formed. The head holder 2 is attached to the main body case 5 by mounting the round bar 3 embedded in the head holder 2 in the guide grooves 5c and 5d. The mounting reference of the head holder 2 is the guide groove 5c, 5d
The round bar 3 of the head holder 2 mounted on is used as a reference. Therefore, since the mounting accuracy of the round bar 3 and the guide grooves 5c and 5d affects the azimuth and the like in writing information on the magnetic card 11 of the magnetic head 1, it is necessary to regulate the mounting accuracy.

After mounting the head holder 2 in the guide grooves 5c and 5d of the main body case 5, the torsion coil spring 4 is mounted as shown in detail in FIG. At this time, a base 4b at both ends of the torsion coil spring 4 whose ends are bent outward.
After being compressed into the spring mounting groove 5e of the main body case 5 while being compressed toward the center, the compressed spring is opened, and the bent end portion is hooked into the groove 5f so that the torsion coil spring 4 is attached so as not to come off. I have.

Card guide path 6 provided in main body case 5
A head opposing roller 7 is disposed so as to oppose the magnetic head 1 with the interposition therebetween, and a feed roller 8 for conveyance and a pad roller (card pressing roller) with the card guide path 6 interposed therebetween at the side position. 9 are provided. The clearance between the magnetic head 1 and the opposing roller 7 is adjusted by a clearance adjusting screw 10 screwed to the tip of the head holder 2.

In the above configuration, the magnetic card 11 inserted into the card guide path 6 and fed by the transport rollers 7
Contact the magnetic head 1, the magnetic head 1 is pushed up together with the head holder 2, and a spring pressure corresponding to the thickness of the magnetic card 11 is applied by the torsion coil spring 4 to the magnetic head 1.
Join. Since the torsion coil spring 4 has multiple turns, it is hard to be influenced by the thickness of the magnetic card 11, and it is possible to apply a small amount of change to the magnetic head 1.

When the curved magnetic card 11 or the deformed magnetic card 11 is conveyed, the round bar 3 embedded in the center of the head holder 2 and the tip 4 of the torsion coil spring 4
a is in point contact, the magnetic head 1 rotates and swings to follow the curved magnetic card 11, and the magnetic head 1
And the magnetic card 11 can be kept in close contact with each other, and information on the magnetic card 12 can be read and written correctly.

Also, the torsion coil spring 4 can be mounted with one touch without any need for height adjustment because there is no mounting with screws or the like, and assembly is easy.

[0017]

According to the magnetic head supporting apparatus for a magnetic card reader of the present invention, a bar-shaped arm is provided on a head holder to which a magnetic head is fixed and the magnetic head is directed toward a card guide path. With a simple structure, the magnetic head can easily follow the curvature or deformation of the magnetic card, and the reading and writing errors of the magnetic card information can be reduced. A card reader can be obtained.

Further, a pressing member for pressing the magnetic head includes:
By pressing the rod-shaped arm with the tip extending in the direction perpendicular to the direction in which the magnetic card is conveyed, the followability of the magnetic head to bending and deformation of the magnetic card is further improved.

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view of one embodiment of a magnetic head support device of a magnetic card reader according to the present invention.

FIG. 2 is a plan view of the embodiment.

FIG. 3 is a partial sectional front view of the embodiment.

FIG. 4 is a cross-sectional view showing details of a mounting portion of the torsion coil spring in the embodiment, and is a cross-sectional view taken along a line AA of FIG. 2;

FIG. 5 is a partial sectional side view of a conventional magnetic head support device.

FIG. 6 is a plan view of a conventional example.

FIG. 7 is a partial sectional front view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Magnetic head 2 Head holder 3 Round bar 4 Torsion coil spring 4a Tip part 5 Main body case 5a Semicircular protrusion 5e Spring mounting groove 6 Card guide path 11 Magnetic card

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-61-26921 (JP, A) JP-A-61-17266 (JP, A) JP-A-62-6647 (JP, A) 195673 (JP, U) Japanese Utility Model Showa 56-64573 (JP, U) Japanese Utility Model 1-96664 (JP, U) Japanese Utility Model 2-65269 (JP, U) Japanese Utility Model Utility Model 2-96664 (JP, U) (58) Field surveyed (Int.Cl. ⁷ , DB name) G11B 5/49 G11B 5/56 G11B 17/00 G11B 21/20

Claims (1)

(57) [Claims] 1. A magnetic card reader having a magnetic head disposed in a card guide path, a head holder supporting the magnetic head, and a direction of transport of the magnetic card fixed to the head holder.
, And a head holder and a rod-shaped arm are disposed on the upper surface side,
A card guideway is formed on the lower side, and a bar is
The protrusion that contacts the arm
It is freely movable down and restrains movement in the direction perpendicular to the transport direction.
A rod-shaped arm at an intermediate position between the main body case provided with a guide groove and the magnetic head and the protrusion.
And a pressing member that abuts the arm and presses it downward.
Wherein the rod-like arm and the protruding portion of the magnetic head up and down movement and as a fulcrum contact points between the rotational movably supported Then co
The magnetic head supporting apparatus of a magnetic card reader, characterized in that the pressure toward the card guide path of the magnetic head by the pressure member.