JP2006148998A - Hybrid pulse motor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hybrid pulse motor which can raise thrust (torque) by shaping a permanent magnet, which constitutes a moving member, into such form that it is extended to the starting position of formation of a pole tooth which constitutes a slider core, that is, into base-wide roughly T-form thereby inserting it into the root of the pole tooth of the entire salient pole. <P>SOLUTION: The hybrid pulse motor comprises a stator which is equipped with a base core where a plurality of pole teeth at specified pitches made of magnetic substance are arranged, and a moving member which is counterposed apart to the stator and is made by winding an exciting coil on the slider core which consists of a plurality of phases each of which catches a permanent magnet and in which pole teeth at specified pitches are made in the positions opposed to the pole teeth of the above stator. The form of the permanent magnet of the above moving member is one where it is extended to the starting position of formation of each pole tooth constituting the above slider core. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a hybrid type pulse motor, and more particularly to a hybrid type pulse motor that improves propulsive force by improving the shape of a permanent magnet sandwiched between cores.

As shown in FIGS. 5 and 6, the hybrid pulse motor in the prior art includes a stator 13 having a base core 12 having a plurality of pole teeth 11 having a predetermined pitch formed of a magnetic material, and a stator. 13 is arranged opposite to each other with a gap, and is composed of a plurality of A-phase, B-phase, and C-phase, each holding a rectangular permanent magnet 14 and having a predetermined pitch at a position facing the pole teeth 11 of the stator 13. A movable element 18 is formed by winding an exciting coil 17 around a slider core 16 on which pole teeth 15 are formed.
In the motor having such a configuration, a thrust (torque) is generated by passing a current through the exciting coil 17. The positional relationship between the salient pole pole teeth 15 of the A, B, and C phases of the mover 18 is shifted by a third pitch with respect to the pole teeth 11 of the base core 12 of the stator 13. The slider core 16 of the mover 18 is moved by passing an electric current through.
The permanent magnet 14 has a function of assisting the electromagnet with current.

JP 2002-281731 A (page 4 to page 5 FIG. 1)

However, the hybrid pulse motor described in the prior art has a problem that the permanent magnets constituting the mover have a simple rectangular cross-sectional shape, and the effect cannot be effectively utilized.
Therefore, there is a problem to be solved by improving the thrust (torque) generated by changing the shape of the permanent magnet.

  In order to solve the above problems, the hybrid pulse motor of the present invention is configured as follows.

(1) A hybrid-type pulse motor includes a stator having a base core formed by arranging a plurality of pole teeth of a predetermined pitch formed of a magnetic material, and a stator arranged with a gap therebetween so that a plurality of phases are arranged. Each of which has a permanent magnet, and a movable element formed by winding an exciting coil around a slider core in which pole teeth of a predetermined pitch are formed at positions facing the pole teeth of the stator, and The shape of the permanent magnet of the mover is a shape extending to the starting position where the pole teeth constituting the slider core are formed.
(2) The hybrid pulse motor according to (1), wherein the permanent magnet has a T-shape.
(3) The hybrid pulse motor according to (2), wherein the shape of the permanent magnet is integrally formed in a T-shape.
(4) The hybrid pulse motor according to (2), wherein the shape of the permanent magnet is divided into T-shapes.

  According to the present proposal, the shape of the permanent magnet constituting the mover is extended to the start position where the pole teeth constituting the slider core are formed, and is substantially T-shaped spreading downward, so that the entire salient pole is formed. The thrust (torque) can be increased by inserting the base of the pole teeth.

  Next, an embodiment of a hybrid pulse motor according to the present invention will be described below with reference to the drawings. In addition, the same code | symbol is attached | subjected and demonstrated to the same thing as what was demonstrated by the prior art.

As shown in FIG. 1, the hybrid pulse motor of the present invention includes a stator 13 having a base core 12 formed by arranging a plurality of pole teeth 11 of a predetermined pitch made of a magnetic material, and a gap in the stator 13. The pole teeth 15 having a predetermined pitch are formed at positions facing the pole teeth 11 of the stator 13, each of which is composed of a plurality of A phases, B phases, and C phases. And a mover 18 formed by winding an exciting coil 17 around the slider core 16.
In the motor having such a configuration, a thrust (torque) is generated by passing a current through the exciting coil 17. The positional relationship between the salient pole pole teeth 15 of the A, B, and C phases of the mover 18 is shifted by a third of the pitch with respect to the pole teeth 11 of the base core 12 of the stator 13. The slider core 16 of the mover 18 is moved by passing an electric current through.
The permanent magnet 14 </ b> A of the mover 18 has a function of assisting the electromagnet with an electric current, and the shape of the permanent magnet 14 </ b> A of the mover 18 extends to the start position where the pole teeth 15 constituting the slider core 16 are formed. That is, it is formed in a T-shaped shape that spreads downward.
The permanent magnet formed in the T shape may be formed integrally with the T shape as shown in FIG. 3, and the shape of the permanent magnet is changed to the T shape as shown in FIG. You may divide and form.

  In this way, the permanent magnet 14A has a shape that extends to the starting position for forming the pole teeth 15 of the slider core 16 and a substantially T-shape that spreads downward to the root of the pole teeth 15 of the entire salient pole. It can be inserted, and its thrust (torque) can be increased.

  In the embodiment, the linear motor has been described. However, the present invention is not limited to this, and a so-called rotary pulse motor can also be applied.

  The shape of the permanent magnet that constitutes the mover is extended to the starting position for forming the pole teeth that constitute the slider core, and it is inserted to the root of the pole teeth of the entire salient pole by making it a substantially T-shape that spreads downward. Thus, a hybrid pulse motor capable of increasing the thrust (torque) is provided.

It is a top view which shows the hybrid type pulse motor of this invention. FIG. 2 is a side view partially showing a cross-sectional view taken along line AA in FIG. 1. It is explanatory drawing which showed the shape of the permanent magnet. It is explanatory drawing which showed the shape of the permanent magnet. It is a top view which shows the hybrid type pulse motor in a prior art. FIG. 6 is a side view partially showing a cross-sectional view taken along line AA in FIG. 5.

Explanation of symbols

11 pole tooth 12 base core 13 stator 14A permanent magnet 15 pole tooth 16 slider core 17 exciting coil 18 mover

Claims (4)

A stator having a base core formed by arranging a plurality of pole teeth of a predetermined pitch formed of a magnetic material;
An excitation coil is formed on a slider core having a plurality of phases, each of which has a gap between the stators, each holding a permanent magnet, and having pole teeth with a predetermined pitch formed at positions facing the pole teeth of the stator. A mover formed by winding
The shape of the permanent magnet of the said needle | mover is a shape extended to the starting position which forms the pole teeth which comprise the said slider core, The hybrid type pulse motor characterized by the above-mentioned.   The hybrid pulse motor according to claim 1, wherein the permanent magnet has a T-shape.   The hybrid pulse motor according to claim 2, wherein the shape of the permanent magnet is integrally formed in a T-shape. The hybrid pulse motor according to claim 2, wherein the shape of the permanent magnet is divided into T-shapes.

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