JPH035025Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field This invention is useful, for example, for reading magnetic records recorded on magnetic recording media such as magnetic cards used in automatic teller machines in banking. The present invention relates to a magnetic head device that performs magnetic processing.

(b) Prior Art As shown in FIG. 1, this type of magnetic head device has a magnetic head 2 attached to a fixedly installed presser roller 1.
This magnetic head 2 is fixed to the tip of a movable arm 4 that is pivotally supported by a fixed block 3, and is attached to a presser roller by a coil spring (not shown). The magnetic card 6 is biased toward the first side and sent between the opposite side.
It has a mechanism for reading. 7 is a stopper.

(c) Problems that the invention attempts to solve However, the magnetic head 2 installed in this way
The magnetic head 2 moves in an arc shape with the base end of the movable arm 4 as a fulcrum in the biasing direction. The contact position was shifted from the contact position, causing reading errors.

In addition, in this case, it cannot be corrected accurately by readjusting the magnetic head 2, which is mounted with high precision.
This caused a decrease in lifespan.

Furthermore, the magnetic head cannot absorb the impact of the leading edge of the magnetic card with the biasing pressure applied by the coil spring, resulting in failure to read the leading edge of the magnetic card.

Therefore, this invention prevents reading errors even if the magnetic head wears out due to long-term use.
Another object of the present invention is to provide a magnetic head device that has a simple structure and is easy to install.

(d) Means for solving the problem This invention is a magnetic head device that reads the magnetism of a magnetic recording medium by holding it between a presser roller and a magnetic head. The two pieces of the leaf spring are arranged substantially parallel to the conveyance direction of the magnetic recording medium, and the two pieces are separated from each other in the direction of urging. The magnetic head device is characterized in that the free end side is fixed to a fixing block on the side surface, and a buffer member is interposed between both pieces of the leaf spring.

(e) Effect The magnetic head device of this invention has the following effect when a magnetic recording medium is conveyed between the presser roller and the magnetic head.
The buffer member absorbs the impact caused by the collision of the leading end of the magnetic recording medium, and the magnetic head is pressed by a biasing force accompanied by parallel movement of both pieces of a leaf spring to perform magnetic processing.

(f) Effects of the invention As a result of the above, according to this invention, since the magnetic head is supported by a leaf spring, this leaf spring has the functions of both a movable arm and a biasing spring. , there is no need for a new biasing coil spring or the like.

In addition, since both parallel pieces of the leaf spring are arranged parallel to the conveyance direction of the magnetic recording medium, and the two pieces are provided at distances from each other in the biasing direction, the magnetic head is moved in the biasing direction. It is supported between two points and moves forward and backward only in the biasing direction.

In other words, even if the reading surface of the magnetic head wears out, the magnetic head will move in the biasing direction while maintaining the same distance between both ends of the parallel leaf springs, so the leaf springs will remain parallel. form a quadrilateral,
Move the magnetic head in the biasing direction.

Therefore, the reading surface of the magnetic head does not deviate from the contact position of the magnetic recording medium, and reading can always be performed in the optimum reading state.

Furthermore, since a buffer member is interposed between both halves of the leaf spring, when a magnetic recording medium is carried between the presser roller and the magnetic head, the shock caused by the collision of the leading end of the magnetic recording medium is absorbed by the buffer member. This allows for accurate magnetic processing from the leading edge of the magnetic recording medium, and since the mounting space for the buffer member uses the dead space between both pieces of the leaf spring, it can be formed compactly.

Furthermore, the structure is such that the leaf spring is made into a U-shape and both pieces are aligned with the conveying direction of the magnetic recording medium as described above, the middle vertical piece is attached to the side surface of the magnetic head, and the free ends of both pieces are fixed to the fixed block. Therefore, it is easy to install and has a simple structure.

(G) Embodiment An embodiment of this invention will be described below in detail based on the drawings.

The drawing shows a magnetic head device built into an automatic teller machine and used for reading magnetic cards, etc. As shown in FIGS. 2 and 3, it includes a presser roller 1 fixedly installed on the lower side, It is composed of a magnetic head 2 placed oppositely above it, a leaf spring 9 that supports the magnetic head 2, and a fixing block that holds the leaf spring 9 fixed in a fixed position.

The above-mentioned presser roller 1 is made of a rubber material whose circumferential surface should apply appropriate friction, and is arranged so as to rotate in the direction of taking in the magnetic card 6, and is placed opposite to this presser roller 1. The magnetic card 6 is read by being held between the magnetic head 2, which is disposed opposite to the upper side of the presser roller 1, and the reading surface 8 formed on the lower surface of the magnetic head 2 is placed on the upper side of the presser roller 1. It is provided at a position corresponding to the center upper surface position and reads the magnetic stripe of the magnetic card 6.

A suitable magnetic card reading biasing pressure is provided by a plate spring 9, which will be described later.

That is, the above-mentioned leaf spring 9 is formed by bending a single thin plate, and is provided in a U-shape in which both pieces 10, 10 facing each other are formed into elongated lengths, and the center part of the hanging piece 11 on the proximal end side is attached with a mounting screw. 12 to the side surface of the magnetic head 2, the free ends are inserted into the side surfaces of the fixing block 3, and after adjusting the reading setting position with a jig, the magnetic head is fixed with the fixing screw 13 and resin hardening 14.

At this time, the leaf spring 9 has both pieces 10, 10 in a direction perpendicular to the biasing direction, that is, the magnetic card 6
along the conveyance direction of both pieces 1.
0 and 10 are provided at far and near positions in the urging direction.

As a result, the magnetic head 2 is supported at two points above and below, and moves forward and backward only in the biasing direction.

At this time, the magnetic head 2 is fixed to the pressure roller 1 side with a slight bias, and the stopper 7 is used to force the leaf spring 9
The magnetic head 2 is held in a standby position by being locked.

A cushioning sponge 15 is interposed between the two pieces 10, 10 of the leaf spring 9, and together with the leaf spring 9, it absorbs the impact on the tip of the magnetic card 6 when it is carried in. The magnetic card 6 is absorbed and the reading failure in that part is eliminated, and accurate reading can be performed from the leading end of the magnetic card 6.

Reference numeral 16 denotes a positioning hole, which is drilled in the back of the fixing block 3. By fitting it into a positioning pin (not shown) on the device body (not shown), positioning can be easily performed, and there is no need to worry when installing it with the device body. We are trying to make adjustments.

Reference numeral 17 indicates a screw for attaching the device to the main body.

In the magnetic head device configured as described above, in a normal state, when the conveyed magnetic card 6 is carried between the presser roller 1 and the magnetic head 2, the leading end of the magnetic card 6 generates a magnetic field. head 2
is pushed upward, and the impact at that time is caused by the leaf spring 9
While the magnetic card 6 is absorbed by the sponge 15, the magnetic head 2 comes into contact with the upper surface of the magnetic card under the biasing pressure of the leaf spring 9, and reads the magnetic card 6 while conveying it while holding it from above and below.

Even if the reading surface 8 of the magnetic head 2 gradually wears out due to long-term use, the magnetic head 2 remains supported by the vertically parallel leaf springs 9 and can only move up and down in the biasing direction. Therefore, accurate reading can always be performed without the reading surface 8 shifting.

In addition, although the above-mentioned embodiment showed an example of reading a magnetic card, the present invention is not limited to this and can be applied to magnetic objects such as magnetic tapes.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing a conventional magnetic head device.
An embodiment of this invention is shown below, with FIG. 2 being a plan view showing a magnetic head device, and FIG. 3 being a front view thereof. 2...Magnetic head, 3...Fixed block, 9...
...Plate spring, 10...both pieces, 11...vertical piece.

Claims (1)

[Claims for Utility Model Registration] A magnetic head device that clamps a magnetic recording medium between a presser roller and a magnetic head and reads the magnetism thereof, the parallel pieces of which are formed in a U-shape as a magnetic recording medium. The base end side of the leaf spring is placed on the side surface of the magnetic head, and the free end side is placed along the conveying direction of the leaf spring approximately parallel to the conveyance direction, and with the two pieces separated from each other in far and near positions relative to the biasing direction. A magnetic head device, each of which is fixed to a fixed block, and a buffer member is interposed between both pieces of the leaf spring.