SU729620A1

SU729620A1 - Tape-driving mechanism rotational speed stabilizer

Info

Publication number: SU729620A1
Application number: SU782671870A
Authority: SU
Inventors: Владимир Андреевич Аксенов; Александр Исаакович Горон; Георгий Сергеевич Крылов
Original assignee: Предприятие П/Я Г-4149
Priority date: 1978-10-02
Filing date: 1978-10-02
Publication date: 1980-04-25

Description

II

Изобретение относитс к накоплению информации , а именно к стабилизаторам скорости вращени двигател лентопрот жного механизма.The invention relates to the accumulation of information, in particular, to stabilizers of the speed of rotation of the motor of the tape mechanism.

Известен стабилизатор скорости вращени двигател лентопрот жного механизма, j выполненный в виде центробежного контактного регул тора, укрепленного на валу двигател 1. Этот стабилизатор имеет относительно простую конструкцию.A stabilizer of rotational speed of the motor of a tape mechanism is known, j made in the form of a centrifugal contact regulator mounted on the shaft of the engine 1. This stabilizer has a relatively simple design.

Недостаток его состоит в малой надежности , что объ сн етс наличием разрыв- О ных контактов.Its disadvantage is low reliability, which is explained by the presence of breaking contacts.

Известен . также стабилизатор скорости вращени двигател лентопрот жного механизма , содержащий алюминиевый диск, жестко укрепленный на валу двигател , и посто нные магниты 2. Этот стабилизатор позвол ет обеспечить относительно высокую надежность .Known . also, the rotational speed stabilizer of the motor of the tape mechanism, containing an aluminum disk rigidly mounted on the motor shaft, and permanent magnets 2. This stabilizer allows for relatively high reliability.

Недостаток его состоит в малой эффективности стабилизации скорости вра- , щени двигател .The disadvantage of it is the low efficiency of stabilizing the speed of the engine.

Цель изобретени - повышение эффективности стабилизации скорости вращени двигател лентопрот жного механизма.The purpose of the invention is to increase the efficiency of stabilizing the speed of rotation of the motor of the tape mechanism.

Это достигаетс за счет того, что в стабилизатор скорости вращени двигател лентопрот жного механизма введены маховики из магнитом гкого материала, снабженные щарикоподщипниками, посредством которых они установлены на валу двигател , и выполненные с кольцевыми пазами, в которых жестко укреплены посто нные магниты , расположенные в виде колец с противоположных сторон алюминиевого диска. При этом любые смежные посто нные магниты в каждом кольце обращены в сторону алюминиевого диска полюсами разной пол рности .This is achieved due to the fact that flywheels made of magnetically soft material, fitted with ball bearings, through which they are mounted on the motor shaft, and made with annular grooves, in which permanent magnets are arranged, are inserted into the speed regulator of rotation of the motor of the tape mechanism. rings on opposite sides of the aluminum disc. At the same time, any adjacent permanent magnets in each ring are turned towards the aluminum disk by poles of different polarity.

На фиг. 1 показан один из возможных вариантов предложенного стабилизатора скорости вращени двигател лентопрот жного механизма; на фиг. 2 - маховик из магнитом гкого материала.FIG. Figure 1 shows one of the possible variants of the proposed speed regulator for the rotation of the motor of the tape mechanism; in fig. 2 - flywheel from a magnet of flexible material.

Claims

The stabilizer contains an aluminum disk 1 rigidly fixed on the shaft 2 of the engine 3, for example an electric motor, by means of a sleeve 4. The latter is rigidly fixed on the shaft 2 of the engine 3 by means of a screw 5. The stabilizer also contains flywheels 6 of a soft magnetic material, for example, a permendur iron-nickel alloy equipped with ball bearings 7, by means of which they are mounted on the shaft 2 of the engine 3. The flywheels 6 are made with annular grooves in which permanent magnets 8 are rigidly fixed, made, for example, of magnetically hard samarium-cobalt alloy. The permanent magnets are located in the annular grooves of the flywheels b in the form of rings located on opposite sides of the aluminum disk 1. Any adjacent permanent magnets 8 in each ring are edged in the direction of the aluminum disk with poles of different polarity. The magnetic fields of the permanent magnets 8, when the aluminum disc 1 rotates, excite eddy currents in it. The latter, interacting with the magnetic fields of the permanent magnets 8, create a mechanical force acting along the circumference of the aluminum disk. Moreover, the moment of this force is directly proportional to the angular velocity of sliding between the aluminum disk and the permanent magnets. The use of the invention will improve the efficiency of stabilizing the speed of rotation of the motor of the tape mechanism. The invention can find application in the tape mechanisms of magnetic recording equipment. Claims An engine speed stabilizer of a tape mechanism containing an aluminum disk rigidly mounted on the motor shaft and permanent magnets, characterized in that, in order to increase the efficiency of stabilizing the speed of rotation of the engine, flywheels made of magnetically soft material are introduced into it, equipped with ball bearings, by means of which they are mounted on the motor shaft, and made with annular grooves in which permanent magnets are fixed in the form of rings with opposing the false sides of the aluminum ring, with any adjacent permanent magnets in each ring facing the aluminum disc by the poles of different polarity. Sources of information taken into account in the examination 1.Onatsevich M.A. Electric motors of direct current for tape recorders. M., “Energie, 1971, p. 37-40.

2. Melik-Stepan N. AM and others. Details and mechanisms of film equipment. M., “Art, 1959, p. 376-381 (prototype).