JP2601474Y2 - Magnetic head - 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 head that slides on a magnetic card .

[0002]

2. Description of the Related Art Conventionally, when a magnetic card is conveyed and a magnetic head slides on the magnetic card to perform recording / reading, stick-slip occurs between the magnetic head and a magnetic stripe of the magnetic card. There are things. The chattering sound generated at that time is unpleasant, and depending on the frequency, the jitter at the time of recording / reading is deteriorated and causes an error. At present, as a countermeasure, as shown in FIG. 4, a weight 11 is placed on the support plate 10 of the magnetic head 1 'to shift the resonance point of the magnetic head system, but this is effective only for a part of oscillation noise. . The generated sound or vibration is caused by the stick-slip of the card and the magnetic head, and is transmitted to a member that resonates, causing a problem.

[0003]

The problem to be solved is that stick-slip may occur between the magnetic head and the magnetic stripe of the magnetic card. The chattering sound generated at that time is unpleasant, and depending on the frequency, the jitter at the time of recording / reading is deteriorated and causes an error. As a countermeasure, a weight is placed on the support plate of the magnetic head to shift the resonance point of the magnetic head system, but only a part of the oscillating sound is effective. SUMMARY OF THE INVENTION In view of the above-mentioned drawbacks, an object of the present invention is to provide a magnetic head in which a recording / reading error is prevented by providing a magnetic head with a function of absorbing vibration caused by stick-slip to prevent resonance.

[0004]

Means for Solving the Problems According to the present invention, in a magnetic head that has a core that slides relatively to a magnetic card and records or reproduces information, a hard member includes an elastic body for absorbing vibration. The invention is characterized in that the longitudinal direction is provided in the direction in which the longitudinal direction is the same as the card running direction on the sliding contact surface with the magnetic card at both sides of the core.

[0005]

[Action] magnetic card 7 to the magnetic head is in sliding contact with the magnetic
When the card 7 travels, the sliding surface 6 slides on the magnetic card 7 and the recording core 3, the reproducing core 4, and the side cores 5, 5 '.
Record or reproduce information. At this time, the sliding surfaces 9a of the hard members 9, 9 'slide relatively to the sliding surface 6 and the magnetic card 7. Stick-slip occurs due to the sliding contact between the magnetic head 1 and the magnetic card 7, and vibration is generated. This vibration is absorbed by the vibration absorbing members 8 and 8 'provided near the sliding contact surface 6.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
1 is a front view of the magnetic head and the medium, FIG. 2 is a side view of the magnetic head, and FIG. 3 is a plan view of the magnetic head.

The magnetic head 1 includes a wide recording core 3 and a narrow reproducing core 4 in a core holder or case 2.
And a side / core 5 and 5 '. A magnetic card 7 is slid on the sliding surface 6 of the magnetic head 1 where the recording core 3, the reproducing core 4, and the side cores 5, 5 'are exposed. Vibration absorbers 8 and 8 ′ made of, for example, an elastic body (elastomer) made of resin are fixed to the front and back surfaces of the core holder or the case 2. Further, hard members 9 and 9 'made of a metal or a hard synthetic resin having a sufficient friction coefficient are provided on the sliding contact surfaces 6 of the vibration absorbers 8 and 8' on the front and rear surfaces of the core holder or the case 2 in FIG.
As shown in FIG. 4 and FIG.
They are provided in the same direction as the row direction and are fixed to the vibration absorbing members 8 and 8 ', respectively.

The sliding surfaces 9 a of the hard members 9, 9 ′ with the magnetic card 7 are flush with the sliding surface 6 or slightly protrude from the sliding surface 6.

[0009] Magnetic cards 7 are sliding magnetic card 7 to the magnetic head 1 is traveling, playing the core 4 and the recording core 3 sliding surface 6 to the magnetic card 7 is in sliding contact with the side core 5,5 ' Record or reproduce information. At this time, the sliding surfaces 9a of the hard members 9, 9 slide relatively to the sliding surface 6 and the magnetic card 7. Stick-slip occurs due to the sliding contact between the magnetic head 1 and the magnetic card 7, and vibration is generated. This vibration is absorbed by the vibration absorbing members 8 and 8 'provided near the sliding contact surface 6.

The vibration caused by the stick-slip generated by the sliding contact between the magnetic head and the magnetic card 7 is caused by the vibration absorbing material 8,
Since 8 is absorbed in 'the magnetic head 1 does not resonate, the generation of sounds can be prevented, without deteriorating the jitter at the time of recording and reading is prevented from causing a recording and reading errors.

The elastic body of the vibration absorbing material described above is not limited to the above embodiment, and other elastic bodies may be used.

[0012]

[Effect of the Invention] Since the present invention is configured as described above, the vibration due to the stick-slip generated by the sliding contact between the magnetic head and the magnetic card is absorbed by the vibration absorbing material and the magnetic head does not resonate , so that the sound Occurrence is prevented,
It is possible to provide a magnetic head exhibiting practically excellent effects such that jitter at the time of reading is not deteriorated and occurrence of a recording / reading error is prevented.

[Brief description of the drawings]

FIG. 1 is a front view of a magnetic head and a medium.

FIG. 2 is a side view of the magnetic head.

FIG. 3 is a plan view of the magnetic head.

FIG. 4 is a cross-sectional side view of a main part showing a conventional magnetic head support structure.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Magnetic head 3, 4, 5, 5 'Core 6 Sliding contact surface 7 Magnetic card 8, 8' Vibration absorbing material 9, 9 'Hard member

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G11B 5/127-5/255 G11B 21/20

Claims (1)

(57) [Scope of request for utility model registration] In a magnetic head which has a core which slides relative to a magnetic card and records or reproduces information, a hard member is positioned on both sides of the core via an elastic body for absorbing vibration. A magnetic head characterized in that a longitudinal direction thereof is provided on a sliding contact surface with the magnetic card in a direction that is the same as a card running direction.