SU871197A1

SU871197A1 - Magnetic head assembly

Info

Publication number: SU871197A1
Application number: SU802864330A
Authority: SU
Inventors: Повилас Антано Варанаускас; Видмантас Альгиманто Ненорта; Римантас-Тадас Антанович Толочка; Альфонсас Ионо Андрюшкявичюс
Original assignee: Каунасский Политехнический Институт Им. Антанаса Снечкуса
Priority date: 1980-01-07
Filing date: 1980-01-07
Publication date: 1981-10-07

Description

(54) УЗЕЛ МАГНИТНОЙ ГОЛОВКИ(54) MAGNETIC HEAD KNOT

1one

Изобретение относитс к области приборостроени и может быть использовано в аппаратах магнитной записи, где необходима повышенна точность движени магнитной ленты на участке рабочей поверхности магнитной головки.The invention relates to the field of instrumentation and can be used in magnetic recording apparatus, where the increased accuracy of the magnetic tape movement on the working surface of the magnetic head is necessary.

Известен узел магнитной головки, в котором используетс генератор ультразвуковой частоты, содержащий высокоомный выход, подключаемый к элементу, который воспринимает электрические ультравысокочастотные звуковые колебани и преобразует их в механические колебани , позвол ющие уменьшить силу трени между рабочей поверхностью магнитной головки и магнитной лентой 1.A known magnetic head assembly uses an ultrasonic frequency generator containing a high-resistance output connected to an element that perceives electrical ultra-high-frequency sound vibrations and converts them into mechanical vibrations, which reduce the frictional force between the working surface of the magnetic head and magnetic tape 1.

Особенность конструкции узла в целом такова, что требует частой подстройки генератора. Это усложн ет эксплуатацию узла.The design feature of the node as a whole is such that it requires frequent adjustment of the generator. This complicates the operation of the assembly.

Известен узел магнитной головки, содержащий сопр женный с корпусом этой головки биморфный пьезопреобразователь и генератор питани , подключенный к обкладкам пьезопреобразовател 2.A known magnetic head assembly comprising a bimorph piezo transducer coupled to the body of this head and a power generator connected to the plates of the piezo transducer 2.

Это устройство стабильнее в работе, чем предыдущее, но оно не позвол ет вThis device is more stable in operation than the previous one, but it does not allow

достаточной степени снизить трение между магнитной головкой, и перемещающейс по ее рабочей поверхности магнитной лентой , что приводит к преждевременному износу магнитной головки и магнитной ленты.sufficiently reduce the friction between the magnetic head and the magnetic tape moving along its working surface, which leads to premature wear of the magnetic head and magnetic tape.

Целью изобретени вл етс уменьшение трени между магнитной лентой.The aim of the invention is to reduce friction between magnetic tape.

Поставленна цель достигаетс тем, что узел магнитной головки, содержащий сопр женный с корпусом этой головки биморфный пьезопреобразователь и генератор питани , подключенный к обкладкам The goal is achieved by the fact that a magnetic head assembly containing a bimorph piezotransducer coupled to the body of this head and a power generator connected to the plates

10 пьезопреобразовател , снабжен вторырл, подключенным к генератору питани , идентичным биморфным пьезопреобразователем, при этом оба пьезопреобразовател установлены строго симметрично с противопоJ5 ложных сторон корпуса магнитной головки и жестко с ним сопр жены.10 of the piezotransducer, provided with a recycler connected to the power generator, is identical to a bimorph piezotransducer, while both piezotransducer are installed strictly symmetrically with the opposite sides of the magnetic head housing and are rigidly associated with it.

На чертеже схематично показана конструкци описываемого узла.The drawing schematically shows the structure of the described node.

Claims

20 bimorph piezo transducers 2 and 3 are installed on opposite sides of the magnetic head 1. The friction between the magnetic tape 4 and the head 1 is reduced due to the vibration of the piezo transducers, which are connected to the power generator 5. The entire assembly is fixed to the bracket 6. When applying ultrasonic voltage From generator 5 to piezoelectric transducers, the latter begin to vibrate mechanically, also with an ultrasonic frequency. At the same time, the amplitude of oscillations of the head itself is so small that the air cushion between the working surface 7 of the head 1 and the magnetic tape 4 has practically no effect on the quality of the recorded and reproduced information, but at the same time the friction losses between the magnetic tape and working surface of the head. Considering that the cost of magnetic tape and magnetic heads (and they are usually used in a set of several pieces) can be up to 250/0 of the cost of a magnetic recording device, it is necessary to reduce friction between them. This will make it possible to extend the service life of the tape and the head by a factor of 2–3, which means that the magnetine will reduce the cost of the hardware recording. Claims The magnetic head assembly, comprising a bimorph piezotransducer coupled to the body of this head and a power generator connected to the plates of the piezotransducer, characterized in that, in order to reduce the friction between the magnetic head and the magnetic tape moving along its working surface, it is provided with a second a power generator identical to a bimorph piezo transducer, while both piezo transducers are installed strictly symmetrically on opposite sides of the magnetic body olovki and hard with him conjugate. Sources of information taken into account in the examination 1. USSR author's certificate number 356676, cl. G 11 B 5/36 1971.

2. USSR author's certificate number 680031 cl. G 11 B 5/36, 1978 (prototype).