SU949708A1

SU949708A1 - Device for moving data carrier tape

Info

Publication number: SU949708A1
Application number: SU782647841A
Authority: SU
Inventors: Эльхан Муса Оглы Юсуф-Заде; Тейгубат Байрам оглы Гурбанов; Махир Гасан Халил Оглы Давришов; Амрулла Иса Бала Оглы Гаджиев
Original assignee: Азербайджанский политехнический институт им.Ч.Ильдрыма
Priority date: 1978-07-18
Filing date: 1978-07-18
Publication date: 1982-08-07

Description

(54) УСТРОЙСТВО ДЛЯ ПЕРЕМЕЩЕНИЯ ЛЕНТОЧНОГО НОСИТЕЛЯ ИНФОРМАЦИИ(54) DEVICE FOR MOVING THE TAPE MEDIA INFORMATION

1one

Изобретение относитс к приборостроению , а именно к устройствам дл перемещени носител записи, например, лентопрот жным механизмам (ЛПМ) магнитофонов .The invention relates to instrumentation engineering, in particular, to devices for moving a recording medium, for example, tape drive mechanisms (tape drives) of tape recorders.

Известны устройства дл перемещени ленточных носителей информации, содержащие пьезоэлектрические элементы, соединенные с источником периодического напр жени и непосредственно взаимодействующие с носителем 1, 2.Devices for transferring tape media are known, comprising piezoelectric elements connected to a periodic voltage source and directly interacting with the carrier 1, 2.

Наиболее близким к предлагаемому по технической сущности вл етс устройство, содержащее пьезоэлектрические биморфные элементы, установленные раздельно под углом 90° друг к другу, причем свободный конец элемента, перпендикул рного плоскости движени носител , снабжен наконечником из фрикционного материала, а конец элемента, параллельного плоскости движени носител , снабжен антифрикционной накладкой 3.The closest to the proposed technical entity is a device containing piezoelectric bimorph elements, installed separately at an angle of 90 ° to each other, with the free end of an element perpendicular to the carrier's plane of motion, provided with a tip made of friction material carrier, equipped with anti-friction lining 3.

Недостатком известных устройств вл етс то, что ударные нагрузки, возникающие при работе устройства и воздействующие непосредственно на пьезоэлектрическиеA disadvantage of the known devices is that the shock loads that occur during operation of the device and act directly on the piezoelectric

элементы, вызыва по вление в них микротрещин , способствуют изменению структуры элемента и последующему его разрушению , т. е. снижаетс надежность работы устройства.elements, causing the appearance of microcracks in them, contribute to a change in the structure of the element and its subsequent destruction, i.e. the reliability of the device operation decreases.

,Цель изобретени - повышение надежности работы устройства.The purpose of the invention is to increase the reliability of the device.

Поставленна цель достигаетс тем, что устройство снабжено двум металлическими упругими пластинами, закрепленнымиThe goal is achieved by the fact that the device is equipped with two metal elastic plates fixed

10 на основании параллельно соответствующим пьезоэлектрическим элементам, и четырьм посто нными магнитами, прикрепленными к свободным концам пьезоэлектрических элементов и металлических упругих пластин на плоскост х, обращенных10 on the base parallel to the corresponding piezoelectric elements, and four permanent magnets attached to the free ends of the piezoelectric elements and metallic elastic plates on the planes facing

одна к другой, при этом свободный конец пластины, установленной перпендикул рно плоскости движени носител , также снабжен наконечником из фрикционного материала , а конец пластины, параллельной one to another, with the free end of the plate, installed perpendicular to the plane of movement of the carrier, also provided with a tip made of friction material, and the end of the plate parallel to

20 плоскости движени носител - антифрикционной накладкой.20 of the plane of motion of the carrier — an anti-friction lining.

Claims

The drawing schematically shows a device for shifting the tape media. Piezoelectric bimorph elements 1, 2 and parallel or metallic elastic plates 3, 4 are fixed to the base 5 at one end. The permanent magnets 6 are attached to the free ends of the piezoelectric elements 1, 2 and plates 3, 4. In addition, the free end of plate 3 is provided with a tip 7 the friction material, and the plates 4 - an anti-friction lining 8. The tip 7 and the lining 8 directly interact with the tape 9. The electrodes of the piezoelectric elements are connected to the output of a voltage source (not specified). B. In the initial position, prior to applying the supply voltage, the tip 7 of the friction material with the metal plate 5 is pressed against the anti-friction pad 8 of the metal plate 4, between which the tape carrier 9 is located. When applying voltage to the piezoelectric bimorph element 1, bending oscillations occur in it, a magnetic field created by a permanent magnet drives a metal plate 3. Last, bending, moves the tape media one step. Prior to returning the metal plate 3 to the initial position, a bimorph element 2 is triggered, which actuates the metal plate 4. Lastly, bending, it retreats and releases the pressed tape carrier, after which the metal plate 3 returns to the initial position. The distance between the piezoelectric elements and the plates, as well as the frequency of the periodic source voltage, is chosen experimentally. The advantage of the proposed device in comparison with the known one is that it, due to the use of metal steel sheets for mechanical contacting between itself during bending oscillatory movements, eliminates mechanical shock loads on said piezoelectric elements. The use of the invention will expand the field of application of the device by eliminating mechanical shock loads and increase its reliability. The present invention may find application in tape recording devices of computer technology, as well as in photo equipment of the aviation industry. Apparatus of the Invention A device for moving a tape information carrier, comprising two piezoelectric bimorphic elements installed separately at an angle of 90 ° to one another, one parallel to the carrier’s plane of movement, the other perpendicular, friction material tip, an anti-friction pad, a source of periodic stress, coupled with piezoelectric elements, and a base, characterized in that, in order to increase the reliability of the device, the OIO is equipped with two metal elastic plates fixed on the base parallel to the corresponding piezoelectric elements, and four permanent magnets attached to the free ends of the piezoelectric elements and metallic elastic plates on the planes facing one another, while the free end of the plate mounted perpendicular to the carrier's plane of movement is also provided the tip of the friction material and the end of the plate parallel to the plane of movement of the carrier - anti-friction lining, Sources of information. taken into account during the examination 1. USSR Copyright Certificate No. 356685, cl. G 11 B 15/56, 1971.

2. USSR author's certificate No. 353273, cl. G & B 15/40, 1971.

3. USSR author's certificate in application number 2480229 / 18-10, cl. G 11 B 15/40, 1977 (prototype).

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