Classifications

• • G—PHYSICS
  • G11—INFORMATION STORAGE
  • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
  • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
  • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
  • G11B5/56—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head support for the purpose of adjusting the position of the head relative to the record carrier, e.g. manual adjustment for azimuth correction or track centering

Definitions

• the present invention provides a magnetic recording / reproducing apparatus which can appropriately adjust a contact position of a magnetic head with a magnetic tape or a magnetic track provided on a magnetic sheet. For adjusting the position of the magnetic head for the purpose.
• Fig. 1 shows the conventional type of adjusting mechanism-Kiyoshi.
• 1 is the magnetic head
• Reference numeral 2 denotes a support plate having a magnetic property in which the magnetic head 1 is placed and fixed at the center of S. Screws to be screwed to the main pillar 3 to fix a, a are the other end 2 ⁇ of the support plate 2 and the substrate
• a coil panel 7 interposed between the supporting plate 2 and the other end 2 ⁇ of the substrate 4 to press upwardly.
• An adjustment screw that is to be threaded into the panel 4 and screwed to the board 4, 8 should be brought into contact with the head gap 1 a of the magnetic head 1 for recording or playback.
• This is a well-known magnetic tape having a magnetic track 8a. Adjustment of the contact position of the head gap 1a with respect to the magnetic track 8a is performed by screwing or loosening the adjusting screw 7. That is, if the adjusting screw 7 is screwed in, the support plate 2 is bent downward with the support column 3 as a fulcrum, and becomes magnetic. When the arm 1 is moved downward and the adjusting screw 7 is loosened, the support plate 2 is bent upward with the support 3 as a fulcrum, and the magnetic head 1 is moved upward.
• the position adjustment of the magnetic head by the conventional mechanism displaces the support plate 2 in the azimuth direction (the direction indicated by the arrow A).
• the head gap 1a of the magnetic head 1 is displaced in the width direction of the magnetic track 8a.
• the contact area of the head gap 1a with the magnetic track 8a is reduced, resulting in a decrease in sound quality.
• this adjusting mechanism does not allow the magnetic head 1 to be rotated around the vertical axis (in the direction of arrow B), the magnetic head 1 such as a magnetic tape 8 is not used.
• the purpose of the present invention is to adjust the headgap so that the head can be moved vertically and rotated around the vertical axis.
• Another object of the present invention is to provide a magnetic head position adjusting mechanism capable of accurately contacting a magnetic track.
• Another object of the present invention is to provide a magnetic head position adjusting mechanism capable of easily and quickly adjusting the position of a magnetic head.
• the magnetic head positioning mechanism includes an adjusting plate rotatably supported on the substrate, a magnetic head supporting the magnetic head, and a longitudinal center line of the magnetic head. And a magnetic head mounting plate mounted on a pair of spindles implanted on the adjusting plate, and the mounting plate mounted on the adjusting plate so that the inclination of the mounting plate with respect to the adjusting plate can be adjusted. And a pair of fixing devices that can fix the fixing device. This allows the magnetic head to be rotated in the horizontal plane or tilted relative to the horizontal plane, and the head gap to the magnetic head is reduced. Accurately contact magnetic tracks on mounted magnetic tapes or magnetic sheets;
• a fork portion is formed on the adjustment plate, and the fork portion is fitted with an eccentric shaft rotatable but semi-fixedly mounted on the substrate, By rotating the eccentric shaft, the adjustment plate can be rotated. As a result, not only can the adjusting operation of the magnetic head in the horizontal plane be performed easily and quickly, but also the adjusting plate can be securely fixed at the adjusted position.
• one of the pair of fixing devices is implanted on the adjusting plate, and the first column is inserted through the magnetic head mounting plate, and the first column is wound around the first column.
• a first coil spring interposed between the head and the mounting plate, and the other of the fixing device is a first coil spring with a magnetic head interposed therebetween.
• a second support that is planted on the adjustment plate and inserted through the mounting plate, and a nut that is screwed to the second support and should contact the outer surface of the mounting plate And a second coil panel wound around the supporting column and interposed between the mounting plate and the adjusting plate.
• FIG. 1 shows a partial disassembly of the conventional magnetic head position adjustment mechanism.
• FIG. 2 is an exploded perspective view showing a mechanism for adjusting the position of a magnetic head according to the present invention
• FIG. 5 is an exploded perspective view showing a pivoting structure of an adjusting plate to a substrate. It is.
• reference numeral 9 denotes a head gap position adjusting plate having a through hole 9a at the center and a fork portion 9 at one corner, respectively. And a through hole 4a formed in the substrate 4 so as to be aligned with the hole 4a, and the annular groove 10a exposed at the lower side of the substrate 4 has a pan-shaped E-shaped groove.
• the pivots 12 for supporting the adjustment plate 9 so that the adjustment plate 9 can be turned on the substrate 4 by fitting the ring 11 but can be moved unnecessarily.
• An annular groove 1 2 which is inserted through a through hole 4 ⁇ formed in the substrate 4, and whose eccentric head 1 2 fits into the fork portion 9 of the adjusting plate 9 and is exposed on the lower side of the substrate 4.
• a head gear mounted so as to be rotatable on the board 4 by fitting a dish-shaped E-ring 15 having a paneling property to the board 4 but not to move unnecessarily.
• the eccentric shafts for positioning, 14 and 15, are a pair of shafts of equal height, which are planted on the adjusting plate 9 and whose upper end is formed so as to form part of a spherical surface.
• a support rod inserted through a through hole 2a drilled at one corner of a magnetic head mounting plate 2 in the shape of a real triangle placed on the support shafts 14 and 15 and 17 is a support column
• the flanged nut 18 screwed into 1 mm is loosely wound around the support 1 mm, and the mounting plate 2 and the flanged nut 17 are used to press down the mounting plate 2 downward.
• the coil panel 19 interposed between them is inserted into the through hole 2 drilled in the other corner of the magnetic head mounting plate 2 which is planted on the adjusting plate 9
• the nut 20 is screwed to the post 19 and should be in contact with the upper surface of the mounting 2.
• the nut 21 is loosely wound around the post 19 and the mounting plate 2 is moved upward.
• the spindles 14 and 15 are magnetic heads fixed on the mounting plate 2. Is located on the longitudinal center ⁇ of The struts 1 ⁇ , 1 9 are installed in the longitudinal centerline O) ho equidistant across the head 1 to the magneto.
• the flanged nut 17 may be a pusher such as an E-ring fitted to the head of the support post 1 o.
• the magnetic head position adjusting mechanism is configured as described above, one of nuts 17 and 20 is screwed in using an appropriate tool. By loosening the magnetic head mounting plate 2, the magnetic head mounting plate 2 rotates slightly about the line connecting the spindles 14 and 15 in the direction indicated by the arrow G in FIG. I do. In this case, since the pivot axis ⁇ of the mounting plate 2 and the longitudinal center ⁇ of the magnetic head 1 are in the same vertical plane, the head is The azimuth adjustment can always be performed properly in the dog gap 1a, which causes a displacement in the width direction of the magnetic track 8a such as the magnetic tape 8.
• the eccentric shaft 12 is appropriately rotated using a tool such as a dropper, the adjusting plate 9, the mounting plate 2 and the magnetic head 1 are moved around the pivot 10. 2 Rotate slightly in the direction indicated by arrow D in the figure to adjust the contact angle of the head gap 1a to the magnetic track 8a to the best condition (0.99 e if it is clear).
• ⁇ adjusting operation can be performed extremely easily with the magnetic head incorporated in a predetermined position. It is especially useful for extremely small magnetic recording and playback devices that cannot secure a large space.

Landscapes

• Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=15381598

Family Applications (1)

Country Status (3)

Cited By (2)

Citations (5)

Family Cites Families (4)

• 1978
  • 1978-10-24 JP JP14528578U patent/JPS5561836U/ja active Pending
• 1979
  • 1979-10-24 WO PCT/JP1979/000269 patent/WO1980000890A1/ja unknown
  • 1979-10-24 NL NL7920098A patent/NL7920098A/nl unknown

Patent Citations (5)

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