JPS6030852Y2 - Magnetic head mounting device - Google Patents

Description

[Detailed Description of the Invention] The present invention is incorporated into a passbook inserter that constitutes a data communication terminal device (bank teller device) for deposit business, and a magnetic passbook with a magnetic stripe is sucked in by the passbook feeding mechanism of the passbook inserter. The present invention relates to a magnetic head mounting device that presses a magnetic head against a magnetic stripe to perform magnetic recording and reproduction when the magnetic head is ejected.

There is a head unit for an apparatus that handles information processing media with magnetic tape attached, as shown in Fig. 1. In this conventional example, a rubber roller a and a magnetic head b are fixed at a fixed interval, and during this time The magnetic medium C is configured to run by a drive system (not shown), and by forming a gap narrower than the thickness of the magnetic medium C, the rubber roller a is deformed and the pressing force on the head b is reduced. As it is given to you.

However, if the allowable physical deformation of the rubber roller a is exceeded, the running load will increase, causing running errors and damage to the medium, which has the disadvantage that only a medium of a certain thickness can be used.

FIG. 2 shows an example of a movable magnetic head that solves the above drawbacks. In this conventional example, a roller d and a magnetic head e face each other at a constant interval, and The head e is supported by a head support f which is rotatable at one end, and the support f is pressed against the roller side by a pressure spring g, and is constructed such that the above-mentioned interval is kept constant by a stopper h.

In this conventional example, when a thicker medium C comes between the roller d and the head e, the head e rotates around the rotation axis of the head support f, but the arm of the head support f rotates. If the length is not long enough, the head e and magnetic medium C
This has the disadvantage that good contact between the head e and the medium C cannot be obtained because the contact angle between the head e and the medium C changes greatly.

In addition, since the magnetic head e does not have a retraction mechanism for releasing pressure on the medium C, it comes into contact with the magnetic medium even in areas where there is no magnetic stripe, causing unnecessary wear on the head and staining the bankbook. There is a drawback that undesirable phenomena such as the following occur.

Therefore, in order to eliminate the various drawbacks of the above-mentioned conventional methods, the present invention makes it possible to easily and effectively adjust the mounting angle of the magnetic head, and also presses the medium only while the magnetic stripe of the medium passes over the head. The present invention provides a magnetic head mounting device in which the magnetic head is kept in contact during the rest of the magnetic head, and the pressing force of the head is maintained substantially constant even if the thickness of the medium is different.

In order to achieve the above object, the present invention attaches a head attached to a board to a base plate via a parallel link so as to be able to move up and down, biases the board to move up and down with two springs, and It is constructed so that the pressing elasticity can be freely released by an actuator.

The present invention will be explained below based on embodiments shown in the drawings.

FIG. 3 is an exploded perspective view schematically showing the present invention.

In the figure, the magnetic head 1 is mounted on a U-shaped head holder 3.
is fixed with two screws 2.

The head holder 3 is fixed by two screws 5 and 6 to a mounting angle variable plate 4 which has an L-shaped support piece provided at the rear of a U-shaped piece.

The angle of the head 1 around the rotation axis formed by the two screws 5 can be adjusted using a screw 6.

The variable mounting angle plate 4 is rotatably supported by a support shaft 8 protruding from the head substrate 7, and the angle can be adjusted around a rotation axis perpendicular to the rotation direction, and after adjustment, it is fixed to the head substrate 7 with a screw 9. be done.

Support shafts 10 and 11 are protruded in parallel from the head substrate 7, and an upper link 12 and a lower link 13 are incorporated into these and rotatably supported.

Next, the base plate 14 to which the head board 7 is attached has supporting shafts 15 and 16 projecting in parallel, and when the upper link 12 and the lower link 13 engage with these, the head board 7 is attached to the base plate 14. are connected by parallel links.

That is, the parallel links have both support axes 10.11,1
5 and 16, an upper link 12, and a lower link 13.

A spring 19 is attached between a spring hook 18 protruding from the base plate 14 and the head substrate 7, and indexes the head substrate 7 upwardly through the parallel link while keeping it in a horizontal state, thereby moving the head 1 onto the magnetic medium 17. A pressing force P1 is generated.

On the other hand, the force P2 pushing down the head is applied to a spring 2 attached between a lever 20 rotatably supported on the base plate 14 by a support shaft 27 and a spring hook 18.
Caused by 1.

That is, in FIG. 3, the clockwise rotational movement of the lever 20 causes the tip of the lever to push downward the collar 22 rotatably incorporated in the lower link support shaft 11, so that the head substrate 7 is separated from the magnetic medium 17. Move in the direction away from you (downward) while maintaining a horizontal state.

Then, the head substrate 7 collides with a rubber plate 24 stretched over a stopper bracket 23 fixed to the base plate 14, and its descent is stopped.

As for the springs 19 and 21 described above, the elasticity of the latter 21 is made stronger than that of the former 19, so that P2>Pl and when not in use, the head board 7 is lowered and becomes stationary on the stopper bracket 23. .

A force P3 that releases the force P2 that pushes down the head board 7
is applied by the suction force of a solenoid 26, which is an actuator, through a link 25 connected to the lever 20 by a pin. When this solenoid 26 is actuated, the lever 20 rotates counterclockwise against the elasticity of the spring 21. The head 1 is pulled up and pressed against the magnetic medium 17.

Note that the actuator 26 may be a small cylinder or the like in addition to a solenoid.

Next, to explain the operation of the device of the present invention, magnetic recording and reproducing is performed by activating the solenoid 26 to release the force P2 that is pushing down the head substrate 7 when the magnetic medium 17 travels above the head. This is done by pressing the head 1 against the medium 17 with a force P1 of 19 degrees.

Next, when the magnetic recording and reproducing is completed, the Tsuremade 26
By cutting off the current flowing through the lever 20 and extinguishing the attractive force, the lever 20 rotates clockwise due to the elasticity of the spring 21 that overcomes the elasticity of the spring 19, and pushes down the head 1 together with the head base plate 7.

As described above, in the magnetic head device of the present invention, the magnetic head is supported so as to be vertically movable via the parallel link.
Since the contact angle between the magnetic head and the magnetic medium is always kept constant, good magnetic recording and reproduction can be performed.

Moreover, during operation, in areas where there is no magnetic stripe, the actuator can freely release the contact between the magnetic head and the medium, thereby eliminating unnecessary wear on the head and staining the bankbook. can.

Furthermore, even though the thickness of the magnetic medium may vary during operation,
Since the head is kept in a horizontal state by the parallel links and is pressed against the medium by the first spring 19, the contact angle of the head with the medium can be kept constant.

[Brief explanation of drawings]

1 and 2 are schematic diagrams of a conventional example, and FIG. 3 is an exploded perspective view of the device of the present invention. In the figure, 1... Magnetic head, 2, 5, 6° 9... Screw, 3... Head holder, 4
...Mounting angle variable plate, 7...Head board, 8, 10, 11゜15.16.27...Support shaft, 12...Upper link , 13...
Ta link, 14...Base plate, 17.
... Magnetic medium, 18 ... Spring hook, 19, 21 ... Spring, 20 ...
...Lever, 22...Color, 23...
・Stopper bracket, 24...Rubber plate, 28...
... Link, 26 ... Actuator.

Claims (1)

[Scope of utility model registration request] A head substrate provided with a magnetic head for recording and reproducing information on a magnetic recording medium, a first direction in which the magnetic head presses the medium via a parallel link, and a second direction in which the press is released. a base plate that holds the head substrate movably; a first spring means that biases the head substrate in the first direction; and a lever that is rotatably provided with one end in contact with the head substrate. a second spring means for biasing the head substrate in the second direction via the lever and having a stronger elastic force than the first spring means; A magnetic head mounting device comprising: an actuator that cancels the rotational force of the lever by the second spring means and separates one end of the lever from the head substrate during reproduction.