SU970580A1 - Dc motor - Google Patents

Description

one

The invention relates to electrical engineering.

DC motors are known that contain a permanent magnet inductor, fixed measles with a winding, a switch on magnetically controlled contacts (reed switches) 1).

In these designs of direct current motors, the switch control of the reed switches was carried out either by an additional inductor located on the motor shaft, or by applying internal and external magnetic shields. Such engines have low mechanical strength of the internal magnet of soft screens and high reactive torque of the switch.

Known DC motors are face type with switches on reed switches.

Such engines have small axial dimensions, but large outer diameters.

Closest to the proposed .20

a motor in which the main inductor of the machine 2 is used to control the reed switches.

However, these engines have low maesogabity and energy performance.

The purpose of the invention is to reduce the dimensions of the DC motor, reduce the influence on the operation of the reed switches of the core coil fluxes and improve the energy performance.

To achieve this goal. magnetically controlled contacts are installed in the slots of the stationary engine core, and the movable inductor is made in the form of a permanent magnet, at one of whose poles there is an additional control permanent magnet that creates a longitudinal component of the magnetic field relative to the reed-contact axis and controls the on and off magnetically controlled contacts.

FIG. Figure 1 shows the design of a DC motor; in fig. 2 shows section A-A in FIG. one.

A primary inductor 2 in the form of a permanent magnet is located on the motor shaft 1. A fixed measles 3 with windings 4 are located around the inductor. In special slots there are reed switches 5. In the strip of the movable inductor

Claims (1)

Claim A DC motor comprising, an inductor made in the form of a permanent magnet, and a fixed armature with a winding, the sections of which are connected to the power circuit through magnetically controlled contacts, characterized in that, in order to reduce the size of the motor, magnetically controlled contacts are installed in the grooves of the magnetic core of the motor armature , at one of the poles of the permanent magnet there is an additional magnet magnetized in a plane perpendicular to the plane of magnetization of the permanent magnet of the inductor.