JPS5840791Y2 - Henpei Gata Kaitenki - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a flat rate converter equipped with a rotation signal generating mechanism.

2. Description of the Related Art Generally, a rotating machine such as an electric motor is provided with a rotation signal generating mechanism, such as a generator, in order to control its rotational speed.

On the other hand, recently, a flat rotating machine has been developed in which, for example, the pole faces of a pair of magnet stators face one side of a flat wire-wound rotor.

In such a flat type transfer machine, for example, a magnet rotor is attached to the rotating shaft of the rotor, a field winding is arranged around the magnet rotor, and the magnetic rotor and the field winding are connected to each other. If a generator for generating a rotational signal is formed by the wires, the dimension in the direction of the rotational axis becomes large, and there is a problem that the original characteristics of the flat type rotary converter are lost.

This idea was made to solve this problem, and the rotation signal is generated by using leakage magnetic flux that leaks from the non-polar side of the magnet stator in a direction perpendicular to the main magnetic flux. By using the space between the magnet stators, it is flat (・
5. To provide a flat weight transfer machine equipped with a rotation signal generation mechanism that generates rotation signals without impairing its original features.

An embodiment of this invention will be described below with reference to the drawings.

A bearing 2 is formed at the center of the bottom plate of a cylindrical case 1 made of magnetic material.

The opening of the case 1 is closed with a cover plate 3 made of a magnetic material, and a bearing 4 is formed in the center of the cover plate 3.

A flat wire-wound rotor 6 with a rotating shaft 5 rotatably supported between bearings 2 and 4 is housed in the case 1 with one side of the rotor 6 close to the cover plate 3.

The winding rotor 6 is made by overlapping a plurality of fan-shaped armature coils, arranging them in an annular shape and in a flat plate shape, electrically connecting them to each other, and integrally molding them into a disc shape using a casting material such as epoxy resin. It is.

Also, inside the case 1, there is a pair of magnet stators 7.
8 is adhered to the inner bottom surface of the case 1 and housed inside the case 1, so that the pole surface of the magnet stator 7.8 is close to the other side surface of the wire-wound rotor 6 and faces the surface thereof.

The wire-wound rotor 6 has a commutator 9 mounted on the cover plate 3 side of the rotating shaft 5, and each segment of the commutator 9 is connected to an armature coil of the wire-wound rotor 6.

The cover plate 3 electrically insulates and supports terminals 10 and 11 passing through the cover plate 3.

Terminals 10 and 11 support brushstrokes 12 and 13 in contact with commutator 9 within case 1.

The wire-wound rotor 6 has a speed signal generating rotor 14 mounted on the magnetic stator 7.8 side of the rotating shaft 5 and located between the side surfaces of the magnetic stator 7.8.

The rotor 14 has a gear-like shape with an uneven peripheral surface facing the side surface of the magnet stator 7.8, and is made of a magnetic material.

A space 15 between the magnet stators 1 and 8 in the case 1,
16, an auxiliary yoke 17.18 whose base end is glued to the inner bottom surface of the case 1 is arranged, and the auxiliary yoke 17.18
The end face of the rotor 14 is located close to the circumferential surface of the rotation signal generating rotor 14.

The auxiliary yokes 17 and 18 are wound with serial rotation signal generating windings 19 and 20.

The windings 19 and 20 connect their winding ends to the rotation signal output end 21.2.
2, it is electrically insulated and led out to the outside of the case 1.

With such a configuration, a main magnetic flux perpendicular to the wound rotor 6 is generated between the magnet stator 7.8 and the cover plate 3, so for example, a DC voltage can be applied between the terminals 10 and 11. When a current is passed through the armature coil of the wire-wound rotor 6, it operates as an electric motor, and the rotor 6 rotates in one direction.

On the other hand, a main magnetic path for leakage magnetic flux is formed between the side surfaces of the magnet stator 7.8 through which the rotation signal generating rotor 14 is relayed, and the leakage magnetic flux φL passes through this magnetic path.

Further, the rotor 14 rotates, and the convex portion of the rotor 14 rotates, and the convex portion
18, a sub-magnetic path for leakage magnetic flux is formed.

Leakage magnetic flux φL in the magnetic path, that is, the auxiliary yoke 17.18
A part of φt passes through.

Since the sub-magnetic path for the leakage magnetic flux mentioned above is formed intermittently as the rotor 14, that is, the wire-wound rotor 6, rotates, the magnetic flux φt also passes through the auxiliary yokes 17 and 18 intermittently. An alternating current voltage having a frequency proportional to the rotation speed of the winding rotor 6 is induced in the rotation signal generating windings 19, 20, and is generated as a rotation signal between the rotation signal output terminals 21, 22.

Therefore, by amplifying this rotational signal and feeding it back to the speed control circuit, the rotational speed of the wound rotor 6 can be maintained at a predetermined constant value.

Moreover, the rotor 14 for generating rotation signals, the auxiliary yokes 17, 18, and the windings 19, 20 for generating rotation signals can be housed within the space formed between the magnet stators 1 and 8. However, there is no need to increase the volume of the special case in order to install them, so in the end, even though a rotation signal generation mechanism is attached, the original function of the flat type weight converter is impaired. There is absolutely no fear.

[Brief explanation of drawings]

The figures show one embodiment of this invention, with FIG. 1 being a longitudinal cross-sectional view and FIG. 2 being a cross-sectional view. 6...Wound rotor, 7,8...Magnetic stator, 14...Rotor for generating rotation signal,
17, 18... Auxiliary yoke, 19, 20...
...Winding for rotation signal generation.

Claims (1)

[Scope of utility model registration request] A flat wire-wound rotor, at least one pair of magnet stators whose pole faces face each other on the side surface of the wire-wound rotor, and a gear-shaped magnet stator attached to the rotating shaft of the wire-wound rotor and between the magnet stators. A rotating signal generating rotor made of a magnetic material that is arranged between the magnet stators to form a main magnetic path for leakage magnetic flux; an auxiliary yoke that forms a sub-magnetic path of the auxiliary yoke, and a rotation signal that induces a rotation signal by the leakage magnetic flux that is wound around the auxiliary yoke and passes intermittently in the sub-magnetic path of the leakage magnetic flux according to the rotational speed of the wound rotor. 1. A flat-type quantity converting machine characterized by comprising a generating winding.