SU936260A1

SU936260A1 - Single-phase stepping motor

Info

Publication number: SU936260A1
Application number: SU802975017A
Authority: SU
Inventors: Владимир Андреевич Денисов; Юрий Сергеевич Жильцов; Владимир Владимирович Кузьмин; Елена Федоровна Кулевская; Зоя Давидовна Новаковская
Original assignee: Ордена Ленина 1-Й Московский Часовой Завод Им.С.М.Кирова
Priority date: 1980-08-18
Filing date: 1980-08-18
Publication date: 1982-06-15

Description

(5) ОДНОФАЗНЫЙ ШАГОВЫЙ ДВИГАТЕЛЬ(5) SINGLE-PHASE STEP ENGINE

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Изобретение относитс к электротехнике , в частности к шаговым электродвигател м , которые наход т широкое применение в электроприводе, например, приборов времени.The invention relates to electrical engineering, in particular, to stepper motors that are widely used in electric drives, for example, time devices.

Известны однофазные шаговые двигатели , содержащие ротор с двухполюсным посто нным магнитом, статор с сердечником, несущим обмотку управлени к имеющим два полюсных- наконечника , образующих неравномерный воздушный зазор с поверхностью ротора СП.Single-phase stepper motors are known, which contain a rotor with a bipolar permanent magnet, a stator with a core carrying a control winding with two pole tips, which form an uneven air gap with the surface of the rotor SP.

Однако неравномерный воздушный зазор между статором и ротором ус ложн ет конструкцию двигател и приводит к большому разбросу его характеристик .However, the uneven air gap between the stator and the rotor impedes the design of the engine and leads to a large variation in its characteristics.

Наиболее близким по технической сущности к изобретению вл етс однофазный шаговый двигатель, состо щий из статора, имеющего ферромагнитный сердечник с обмоткой управлени и двум полюсными наконечниками иThe closest to the technical essence of the invention is a single-phase stepper motor consisting of a stator having a ferromagnetic core with a control winding and two pole tips and

ротора с цилиндрическим двухполюсным посто нным магнитом 2.rotor with a cylindrical bipolar permanent magnet 2.

Однако этот двигатель из-за наличи пластины, располагаемой на полрсных наконечниках, имеет сравнительно сложную технологию изготовлери ,сложную конфигурацию поверхнос- . тей, образующих рабочий зазор, и одностороннее т жение ротора.However, this engine, due to the presence of a plate located on the polarskih tips, has a relatively complex technology of manufacture, a complex configuration of the surface. tey, forming a working gap, and unilateral thrust of the rotor.

Цель изобретени - упрощение техно10 логии изготовлени двигател и повышение его надежности.The purpose of the invention is to simplify the technology of engine manufacture and increase its reliability.

Цель достигаетс тем, что двигатель снабжен пружин щим разрезным j кольцом, установленным между полюсными наконечниками и ротором, причем кольцо выполнено из ферромагнитного материала и имеет два радиальных или осевых выступа.The goal is achieved by the fact that the engine is equipped with a spring-split j ring mounted between the pole pieces and the rotor, the ring being made of a ferromagnetic material and has two radial or axial protrusions.

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Claims

In Fig.1 shows the proposed engine in isometric, general view; Fig. 2 shows embodiments of spring rings. The motor has pole tips 1 and 2 connected by a core on which winding 4 is installed. Pole tips 1 and 2 cover a cylindrical two-pole permanent magnet 5 mounted on the rotor shaft. Between the pole tips 1 and 2 and the magnet 5 in the tension state a spring-loaded split ring 6 is installed. In FIG. 2 shows variants of this ring; 6a - ring with radial protrusions, 6b and 6c rings with protrusions made in the axial direction. The engine works as follows. When the winding 4 is de-energized, the magnet 5, and hence the rotor, is oriented along the axis of maximum magnetic conductivity of the magnetic circuit for a permanent magnet 5 which, due to the protrusions on the ring 6, does not coincide with the axis of symmetry of the pole pieces 1 and 2. The starting torque of the motor and the predetermined direction of rotation of the rotor when the current pulse is applied to its winding, the magnet 5 takes the position at the end of the pulse, with which the axis of magnetization of the magnet 5 almost coincides in the axis of symmetry GOVERNMENTAL pieces 1 and 2, and their polarity is opposite. In the gap between the pulses, the rotor is again shifted to the position providing the maximum magnetic conductivity for the flux of the magnet 5. Applying the next current pulse of opposite polarity 6 to the winding k again creates conditions for the rotor to rotate in the same direction by an angle close to 180 °. The engine cycle then begins to repeat. Thus, due to the presence of the spring ring 6, the fastening parts are not required, the element providing asymmetry of the magnetic circuit, which simplifies the assembly technology of the described engine, ensures the frequency of its assembly and eliminates the unilateral pull of the rotor in the longitudinal direction, which together increases its reliability Compared with known engines. Claims Single-phase shchagovy engine, consisting of a stator, having a ferromagnetic core with a control winding and two pole tips, and a rotor with a cylindrical two-pole permanent magnet, characterized in that, in order to simplify the technology of manufacturing an engine while simultaneously increasing its reliability, it is provided with a spring-loaded split ring mounted between the pole pieces and the rotor, the ring being made of ferromagnetic material and having two radial or axial protrusions. Sources of information taken into account in the examination 1. US patent number 3991332, CL 310-L9, 1976.

2. Forward Germany No. 2559635, cl. H 02 K 37/00, 1978.