JPS596119Y2 - motor - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a motor that drives a watch or the like.

Conventionally, for example, in pulse motors, the excitation coil was installed far from the rotor, or the rotor was not located on the axis of the excitation coil, resulting in a long magnetic circuit, high magnetic resistance, large leakage magnetic flux, and low efficiency. there were.

There was also a device in which the rotor and the iron core were orthogonal to each other, but the winding of the excitation coil was complicated, making assembly extremely complicated.

For this reason, even if one of the multiple excitation coils broke, the iron core and yoke all had to be replaced.

Therefore, the present invention improves efficiency by bringing the excitation coil and rotor closer together and making the axes of the excitation coil and rotor perpendicular to each other, and also improves the ease of assembling the motor by making it easier to install the excitation coil and replace the excitation coil. It is also made easier.

An embodiment of the present invention will be described below based on the drawings.

Reference numeral 1 designates a yoke, and the outer ends of iron cores 2, 3, 4.5 are bent at a vertical bent portion 1a formed by bending a part of the yoke.
It is fixed by a, 3 a, 4 a, and 5 a.

Bobbins 5a, 7a, 8a, 9a around which excitation coils 6, 7, 8.9 are wound are attached to the iron cores 2, 3, 4.5, and fixed bobbins 5a, 7a, 8a, 9a are attached to the inner ends of the iron cores 2, 3, 4.5. Magnetic poles 10, 11, 1
2.13 is fixed.

The fixed magnetic poles 10, 11, 12, 13 are bent as shown in the figure, and the tip portions 10a, 11a, 12
a , 13 a, bent portion 10 b , 1l b , 12
b, 13 b, other end 10 C, 11 C, 1
2c and 13c.

14 is a rotor, and one side of a rotating shaft 15 is rotatably supported by the yoke 1.

The rotor 14 has four magnetic poles 14 a , 14 b , 14
C, 14 d are magnetized, and N pole, S pole, N pole, respectively.
It is magnetized to pole and south pole.

The central axes of the iron cores 2, 3, 4.5 are perpendicular to the center line of the rotating shaft 15.

Next, the operation will be explained.

For example, when a positive drive pulse is supplied to the excitation coils 6, 7, 8, and 9, the fixed magnetic pole 10 and the fixed magnetic pole 12
The fixed magnetic poles 11 and 13 are magnetized to S poles, and the tips 10a, 11a, 12a, 13a of the fixed magnetic plates 10, 11, 12.13 are magnetized to the magnetic poles 14b, 14b of the rotor 14, respectively. 14 C, 14 d, 1
4a is attracted, and the other ends of the fixed magnetic poles 10, 11, 12.13 10C, 11C, 12C, 13C
are the magnetic poles 14 a , 14 b , 14 C of the rotor 14
, 14d, and the rotor 14 rotates in the direction of arrow A.

Then, when the supply of drive pulses is stopped, the rotor 14 has a boundary line between each of the magnetic poles 14a, 14b, 14C, 14d as fixed magnetic poles 13, 10, 11 . 12 bent portions 13 b ,
It stops at a position opposite to 10 b , 11 b , and 12 b.

Next, when a negative pulse is supplied to the excitation coils 6, 7, 8, 9, the fixed magnetic poles 10, 11, 12, 13 are respectively magnetized to S pole, N pole, S pole, N pole, and so on. The rotor 14 rotates 90 degrees in the direction of arrow A.

When driving pulses are supplied to the excitation coils 6, 7, 8.9, a short magnetic circuit consisting of the iron core 3, rotor 14, iron core 4, and yoke 1 is constructed as shown by arrow B in FIG. Ru.

The motor is assembled using bobbins 6a, 7, which are wound with excitation corks 6, 7, 8.9 from the outer ends of iron cores 2, 3, 4.5.
a , 8 a , and 9 a , and vertically bent part 1 a of yoke 1
・・・・・・Screws 2a, 3a, 4a, 5
It can be screwed using a.

Therefore, assembly is extremely easy.

In addition, when the excitation coil breaks, it can be easily replaced by loosening the screw and removing the iron core.

Note that the shape of the fixed magnetic pole is not limited to the one used above, but may be a shape that follows the outer periphery of the rotor 14, or may be curved.

As detailed above, according to the present invention, the axis of the excitation coil and the rotation axis are orthogonal to each other at the center of the rotor, so the magnetic circuit can be shortened, magnetic resistance can be reduced, and leakage magnetic flux can be reduced, thereby increasing efficiency. can be increased.

Furthermore, assembly is easy, and excitation coils can be easily replaced.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an embodiment of the present invention, and FIG. 2 is a sectional view taken along line II--II in FIG. 1...Yoke, 1a...Vertical bent part, 2,
3... Iron core, 6, 7, 8, 9. ．． ．． ．． ．． ．． Excitation coil, 10, 11. 12...Fixed magnetic pole, 1
4...Rotor, 14 a, 14 b, 14
C, 14 d...Magnetic pole, 15...
·Axis of rotation.

Claims (1)

[Claims for Utility Model Registration] A rotor whose outer periphery is magnetized with different polarities alternately, a rotating shaft of this rotor that is rotatably supported, and vertically bent portions of the same number as the number of poles of the rotor are provided. a yoke, an iron core whose outer end is screwed to the vertically bent portion of the yoke and which is orthogonal to the rotational axis of the rotor, an excitation coil wound around this iron core, and fixed to the inner end of the iron core. and a fixed magnetic pole facing the rotor.