JPH0633585Y2 - Magnetic head support device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a magnetic head supporting device of an insert-type manual magnetic card reader that magnetically adheres a magnetic head to a medium by the elasticity of a rod-shaped spring.

<Prior Art> In a conventional insertion type manual magnetic card reader or the like, one of the magnetic heads closely attached to the magnetic medium is fixed to the card frame 1 as shown in FIG. The bar-shaped tips of the two rod springs 4 ', 4 "of the die rod spring 4 are inserted into the holes 8 on both sides of the support fitting 3 holding the magnetic head 2. Is urged downward by the magnetic medium by the elasticity of the rod springs 4 ', 4 "and is rotated about the hole 8. Therefore, when the magnetic card passes the front surface of the magnetic gap, the magnetic head 2 is provided with a supporting device which is brought into close contact with the magnetic medium by biasing and rotating.

<Problems to be Solved by the Invention> However, in the conventional magnetic head supporting device, as shown in FIG. 6, in the card frame 1 of the type corresponding to one type of track, the magnetic head 2 serves as the guide surface of the magnetic card 6. When the dimension of the projecting window 9 in the direction in which the magnetic card 6 moves is two to three times the dimension up to the magnetic card 6 perpendicular to the card frame 1, the magnetic head 6 collides with the magnetic card 6 that is suddenly inserted. . Due to this impact, the magnetic head 2 causes excessive pivotal movement about the approach direction of the magnetic card 6 as a central axis.
Further, the rotating motion causes a great restoring force in the direction of arrow F in the magnetic head 2 to collide with the magnetic card 2 at the time of returning, and it takes some time for the magnetic head 2 to directly face the magnetic card 6, and recording or reproduction may be performed. There is a drawback that the unstable time becomes long.

<Means for Solving the Problems> In the present invention, except for such drawbacks of the prior art, one end of a pair of bar springs 4 ', 40 "is fixed on the card frame 1 by a spring retainer 5 and protrudes. Supporting device for magnetic head of magnetic card reader in which notch grooves are formed on both side surfaces of the magnetic head 2 which is pivotally supported and pivoted so that a part of the rod springs 4 ', 4 "is inserted to limit the pivotable movable region. Is.

<Operation> The magnetic head 2 is rotatably supported by the tips of the rod springs 4 ′, 4 ″ so as to be urged into close contact with the magnetic medium, and the notch groove allows the magnetic head 2 to freely rotate because the width of the groove limits the rotation of the magnetic head 2. It cannot be done, and enters a stable state in a short time.

<Embodiment> An embodiment of the magnetic head supporting apparatus of the present invention is shown in FIGS.
Shown in Figures, 3 and 4.

One side is fixed to the card frame 1 where the magnetic card 6 is transferred as shown in the drawing. The other two protruding stick springs 4 ', 4 "
The hook-shaped portions at the tips of the respective heads are inserted and pivoted into the holes 8 on both side surfaces of the support fitting 3 holding the magnetic head 2, and the magnetic head 2 is elastically moved by the rod springs 4 ', 4 ". The magnetic card 6 comes into contact with the magnetic card 6. Bar springs 4 ', 4 "are inserted into both side surfaces of the magnetic head 2 to form notches 7, 7'
Further, the notches 7 and 7'are controlled so as to rotate within an angle range of ± θ with respect to the support of the magnetic head 2 as shown in FIG. Therefore, for the cut grooves 7, 7 ', the width l of the groove is determined so that the minimum necessary rotation of the magnetic head 2 is allowed.

Therefore, the magnetic head 2 does not exceed the range of the angle θ even if there is a collision when the magnetic card 6 is transferred, and the swing due to the rotation of the magnetic head 2 is stable in a short time.

<Advantages of the Invention> As described above, according to the present invention, the magnetic head 2 has a small impact when directly facing the magnetic card 6, does not rotate more than necessary, and the magnetic head 2 stabilizes quickly. A magnetic card reader capable of reliable recording and reproduction is obtained.

[Brief description of drawings]

FIG. 1 is a perspective view of a magnetic head supporting device according to the present invention near a magnetic head, FIG. 2 is a vertical sectional view taken along the card frame portion in FIG. 1, and FIG. FIG. 4 is a front view of the magnetic head portion showing the operation range of the rotation preventing mechanism of the magnetic head according to the present invention. FIG. 5 is a conventional magnetic head support. FIG. 6 is a vertical sectional front view showing the rotating operation of the magnetic head when the magnetic card shown in FIG. 5 is inserted. In addition, 1: card frame, 2: magnetic head, 3: support bracket, 4, 4 ′,
4 ″: Bar spring, 5: Spring retainer, 6: Magnetic card, 7, 7 ′: Notch groove.

Claims (1)

[Scope of utility model registration request] 1. A pair of bar springs 4 ', 4 "projecting from one end fixed by a spring retainer 5 on a card frame 1 provided with a mechanism for moving a magnetic card 6 and pivotally supported by the other ends. A support device for a magnetic head for a magnetic card reader, wherein notches 7 and 7 'into which a part of the rod springs 4'and 4 "are inserted are provided on both sides of the rotating magnetic head 2.