JPS61109447A - Motor with frequency generator - Google Patents

Abstract

PURPOSE:To obtain a motor with a generator of simplified structure and satisfactory assembly working property, by forming two rows of salient poles making them get out of position mutually in the peripheral direction at the tip of core teeth wound up with a driving coil, and by winding up a generating coil between the salient pole rows. CONSTITUTION:A motor stator is formed by winding up core teeth 1 with a driving coil 7, and a rotor 10 consisting of ring-formed multipolar magnets 11 is supported to be freely rotated confronting the stator. At the tip sections of the core teeth 1, two salient pole rows 3, 5 are formed via space in the axial direction. The salient poles 2, 4 among each salient pole row 3, 5 are arranged at the same pitch getting out of position mutually in the peripheral direction, and a generating coil 8 is arranged to be wound up in the space between the salient pole rows 3, 5. In this manner, a motor and a generator can have the core teeth 1 and the rotor 10 for common use, and the structure is simplified.

Description

[Detailed description of the invention] (b) Industrial application field The present invention relates to improvements in electric motors with frequency generators.

Conventional technology Conventionally, this type of electric motor with a frequency generator has been constructed by, for example, forming a power generation coil by winding a plurality of turns of conductive wire together with the drive coil around the stator side iron core teeth around which the drive coil is wound. ) It has a structure in which two multipolar magnets are rotatably arranged so as to face each other (see, for example, US Pat. No. 5,264,539).

However, in such a motor with a frequency generator, it is difficult to wind the generator coil around the iron core teeth, so the assembly work is complicated.

(c) Problems to be Solved by the Invention The present invention has been made to solve these conventional problems, and provides an electric motor with a frequency generator that has a simple structure and is easy to assemble. .

) measures to resolve the problem; In order to solve this problem, the present invention provides @'14. .

A salient pole array of an annular nest 1 is formed of first salient poles provided at the tips of a plurality of radially formed iron core teeth for the drive coil of The second salient pole array provided at intervals is arranged in parallel with the first salient pole array in the axial direction (two intervals apart to form an annular second salient pole array, and C2 power generation coils are formed between the second salient pole rows, and a multi-pole magnet is rotatably (=supported) so as to surround the outer peripheries of the first and second salient pole rows, and the first and second salient pole rows are rotatably supported. Two salient poles are formed at the same pitch and are offset from each other in the circumferential direction.

(E) Function With this configuration, the tip of the iron core teeth around which the drive coil of the motor is wound (the winding groove for the generating coil sandwiched between the second, first and second salient pole rows) is formed, while the multi-pole Magnetic flux from the magnet passes obliquely to the power generation coil between the first and second salient poles and crosses the power generation coil obliquely.

(f) Example The present invention will be explained in detail below.

FIGS. 1 and 2 are plan views of essential parts and a new front view showing an embodiment of a motor with a frequency generator according to the present invention.

In both figures, a plurality of radially formed core teeth (1)
Two first salient poles (2) are formed in the circumferential direction at the tip of each of the annular first salient poles (2).
A salient pole array (3) is formed.

Further, at the tip of each core tooth (1), the second salient pole (4) is arranged so that the second salient pole row (3) partially overlaps the first salient pole row (3) with an interval in the axial direction. The second salient pole array (4) forms a second salient pole array (5) spaced apart from the salient pole array (3) @1. )
is formed. Each salient pole f21. (4) are formed at equal pitches.

In addition, the iron core tooth (1) is made by stacking three iron plates, for example.
It is formed as '□' and is supported by a bearing part (6).

Moreover, the code|symbol (7) is the drive coil for electric motors wound around the iron core tooth (1).

A conducting wire is housed between the first salient pole row (3) and the second salient pole row (5) to form a loop-shaped power generating coil (8). In the case of the embodiment, this generating coil is provided after the winding of the drive coil (7).

A rotor (1) is rotatably supported by inserting a rotating shaft (9) into a hollow part of a bearing part (6).
An annular multi-pole magnet Hυ is provided so as to surround the outer periphery of the salient pole arrays (3) and (5). This multi-pole magnet has many magnetic pole parts magnetized in two alternately different poles (C) in the circumferential direction.

Such frequency power generation m for the motor is generated when the rotor rotates, the multi-pole magnet) (at the boundary C2 between the momentary contact magnetic pole parts of 111, the salient pole (2) of @i rotates the multi-pole magnet When the second salient pole (4) faces the magnetic pole part on the opposite rotation direction side, the magnetic flux from the multi-polar magnet (lυ) is transferred to the first salient pole (2) 1 generator coil. (8) and the second salient pole (4), but in that case, as shown in Figure 4, the first and second salient poles (2) and (4) partially overlap. , the first and $2 salient poles (2), (
4), the magnetic flux from the multipolar magnet aD becomes oblique.

Therefore, the magnetic flux obliquely crosses the generating coil (8) disposed between the first salient pole (21 and the second salient pole (4), generating an electromotive force, and the first generating coil (8) is connected to the rotor (II). A signal with a frequency corresponding to the rotation speed of the motor is obtained.

In addition, the first salient pole (2) and the second salient pole (4) which is partially C-doubled in proximity to this are set as one set, and this set corresponds to each magnetic pole of the multi-pole magnet fill (2n+1 ) [n
If they are arranged so as to correspond to each integer, the following advantages are obtained.

In other words, when one magnetic pole of a multi-pole magnet rotates at an angle corresponding to one set to the next, one generating coil (8
) appears at the output end of 1 cycle. Then, the number of magnetic poles (multipolar magnet) (+13) is calculated by the number of magnetic poles X (1/2) X (2n + 1) H
! produces an output of

Therefore, compared to the conventional case of using a power generation coil in which one power generation wire corresponds to the magnetic pole of the multipolar magnet, the number of magnetic poles of the multipolar magnet I is ((2n+1)
/23 times the frequency output can be obtained.

Note that in the present invention described above, the first salient pole (2) and the second salient pole (4) may be formed from a plurality of disc-shaped iron plates; The salient pole (21) and the second salient pole (4) of the nest 1 may be formed by providing a winding groove at the tip of the iron core tooth.

Furthermore, the generator coil (8) has exactly @1 salient pole (2)
The second salient pole (4) does not need to be placed in the curve, but can be placed between their bases to achieve the object of the present invention.

In Figure @2, the circuit board α3 forming the drive circuit is stacked on the stator yoke C1, and the C2 bearing part (6)
is installed.

By switching and driving the drive coil (7), the rotor (101) rotates, and along with this, a power generation output is obtained from the power generation coil (8).

(g) As described in detail, the electric motor with a frequency generator of the present invention has a first salient pole array (3) formed at the tip of the iron core teeth (1) around which the drive coil (7) is wound, and $2 9 generating coils (8) can be created by simply placing the conductor between the salient pole rows (5) to form the generating coils (8).
) outputs a signal with a frequency corresponding to the rotation of the multi-pole magnet (111), making it easy to form one generating coil (8) and improving workability.Especially, the first salient pole array (3) Since the second salient pole array (5) is offset in the circumferential direction, the magnetic poles for the motor can also serve as the magnetic poles for the generator, even if the multi-pole magnet (ill) is not provided with magnetic poles by axial magnetization. can.

Also, the set of '@1 and the second salient poles (2) and (4) is (2n+1) for each magnetic pole C2 of the multipolar magnet fiυ.
/ When 2 pieces are arranged in correspondence, it is easier to create a generator coil (
The frequency of the output signal from 8) can be increased.

[Brief explanation of the drawing]

1 and 2 are a plan view and a new front view of essential parts showing an embodiment of a motor with a frequency generator according to the present invention, and FIG. 3 shows the first and second salient poles of FIG. 1. FIG. 4 is a partially exploded view showing the rows and multipolar magnets, and is a diagram for explaining the operation of the motor frequency generator of FIG. 1. (1)... Iron core tooth, (2)... First salient pole, (3)
...First salient pole row, (4)...Second salient pole, (5)
...Second salient pole row, (7)...Drive coil, (8)
...Generating coil, α[...rotor, a])...Multi-pole magnet. that's all

Claims (2)

[Claims] (1) An annular first salient pole array consisting of first salient poles formed radially and provided at the tips of a plurality of core teeth around which a drive coil of the electric motor is wound; an annular second salient pole row formed by arranging second salient poles spaced apart from the first salient pole row in parallel with the first salient pole row; comprising: a power generation coil disposed between a second salient pole array; and a multipolar magnet rotatably supported and disposed so as to surround the outer periphery of the first and second salient pole arrays; An electric motor with a frequency generator, wherein the first and second salient poles are formed at the same pitch and are offset from each other in the circumferential direction. (2) The first salient pole and the second salient pole adjacent thereto are one set, and this set is (2n+) for each magnetic pole of the multipolar magnet.
1) An electric motor with a frequency generator according to claim 1, which is arranged in correspondence with each other.