JPH02269453A - Face-opposing motor - Google Patents

Abstract

PURPOSE:To reduce the number of coil terminals, to improve an assembling operation thereby and to improve reliability by forming coils of each phase numbering M out of one conductor in a face-opposing motor of N phases having M number of coils for one phase. CONSTITUTION:A face-opposing motor is a three-phase motor having three excitation phases I, II and III and two coils 2 are provided for each excitation phase. The coils 2 are provided on a printed circuit board 3 and the two coils constituting the same excitation phase are disposed at positions opposing each other on the circumference. The two coils of each phase are formed of one conductor 4. One terminal 1 of each conductor 4 is connected to an earth wire 5 being common to other excitation phases and the other terminal 1 to a discrete lead wire 6. Since the two coils 2 for each phase are formed of one conductor 4 in this way, the terminals 1 for each phase need to be provided only in two irrespective of the number of coils, and thereby the number of terminals can be reduced sharply.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a surface-facing motor, which is used in a flat motor, etc., in which a magnet, a stator yoke, and a printed circuit board for coil wiring are arranged face-to-face. In particular, it relates to the coil wiring of the motor.

[Conventional technology]

In particular, one type of motor structure used in small motors is a flat structure motor in which a magnet rotor with a fixed motor shaft is placed opposite a stator equipped with a wire-wound coil. A face-to-face motor is used in which printed circuit boards for coil wiring are arranged face-to-face.

FIGS. 4 and 5 are a circuit diagram and a plan view of a coil illustrating a conventional configuration of this type of surface facing motor.

In these figures, when the surface-facing motor is a three-phase (N-phase) motor having two (M) coils 2 per phase as shown in the diagram, and the total number of coils is 2×3 (M×N),
The number of coil terminals 1 is twice that number, 2x2X3 (2xMx
N) pieces, that is, 12 pieces.

[Technical problem to be solved by the invention] However, in the above-mentioned conventional surface-facing motor, the number of terminals is large compared to the number of coils, so there are many places to solder, and assembly workability is not good. In addition to this, there were also technical issues in that there were many soldering defects and motor deadlock defects, which led to a decrease in reliability.

The present invention has been made in view of the above technical problems, and an object of the present invention is to provide a surface-opposed motor that can improve assembly workability and reliability by reducing the number of terminals relative to the number of coils. purpose.

[Means for solving problems]

The present invention provides an N-phase face-to-face motor in which a magnet, a stator yoke, and a printed circuit board for coil wiring are arranged face-to-face, and each phase has M coils. By forming the coil with a single conductive wire, the number of coil terminals is reduced, thereby achieving the above object.

〔Example〕

The present invention will be specifically described below with reference to FIGS. 1 to 3.

FIG. 1 is a circuit diagram of an excitation coil of a surface facing motor according to an embodiment of the present invention, and FIG. 2 is a plan view of the excitation coil of FIG. 1. , ■
, ■, and each excitation phase is provided with two coils 2.2.

Coils 2 (six in total) constituting each excitation phase I, ■, ■ are provided on the printed circuit board 3, and two coils 2 constituting the same excitation phase are positioned opposite each other on the circumference. It is located in

Therefore, according to the present invention, the two coils of each phase are formed by one continuous conductor VA4.

In each conducting wire 4, one terminal 2 is connected to a ground wire 5 common to the other excitation phases, and the other terminal 2 is connected to an individual lead wire 6.

According to the embodiment described above, two pieces (M pieces) for each phase.
Since the coil 2.2 is formed from one conductor 4, the number of terminals 1 for each phase only needs to be two regardless of the number of coils 2, which greatly reduces the number of terminals 1. It became possible to reduce

As is clear from the comparison between the conventional structure shown in FIGS. 4 and 5 and the embodiment structure shown in FIGS. 1 and 2, in the case of a three-phase motor having two coils 2 per phase, conventionally By applying the present invention, the number of coil terminals that previously required could be halved to six.

Generally, by applying the present invention to an N-phase motor having M coils in the L phase, the number of coil terminals can be reduced to 1/M.

FIG. 3 is a circuit diagram of an excitation phase of a surface-to-face motor according to another embodiment of the present invention, with two coils having three coils per phase.
The case of a phase motor is shown.

In this embodiment, two excitation phases 1. Since the common ground wire 5 of II is one of the branch lines, the two excitation phases themselves can also be formed with the same single conductor 4,
Compared to the previous embodiment, the number of coil terminals 1 can be further reduced.

That is, when applying the present invention to a two-phase motor, as is clear from the circuit shown in the figure, the number of coil terminals 1 is always set to the minimum 2, regardless of the size of the number M of coils 2 per phase. You can get away with it.

According to the embodiment described above, in a multi-phase surface-to-face motor in which a plurality of coils 2 are provided for each excitation phase, the plurality of coils 2 for each phase are configured with a single conductor 4, so that the following A similar effect was obtained.

1) Since the number of coil terminals 1 is reduced, the workability of soldering the coil terminals 10 is improved accordingly.

ii) Soldering can reduce problems such as motor put-lock due to defects, that is, failure of rotor rotation due to poor coil conduction.

ii) Since the number of wiring connection points is reduced due to the reduction in the number of coil terminals 1, pattern wiring on the printed circuit board 3 can be facilitated and the printed circuit board 3 can be made smaller.

(2) Since the number of coil terminals 1 is reduced, the number of soldering points can be reduced, and the number of man-hours required for assembling the motor can be reduced.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, the magnet, the stator yoke, and the printed circuit board for wiring the coils are arranged face-to-face, and each phase has M coils. - Since the M coils for each phase are formed using a single conductor, it is possible to improve the workability of soldering the coil terminals and to reduce problems such as motor put-lock due to poor soldering. It becomes possible.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram of an excitation coil of a surface facing motor according to an embodiment of the present invention, FIG. 2 is a plan view of the excitation coil of FIG. 1,
FIG. 3 is a circuit diagram of an excitation coil of a surface facing motor according to another embodiment of the present invention, FIG. 4 is a circuit diagram of an excitation coil of a conventional surface facing motor, and FIG. 5 is a plan view of the excitation coil of FIG. 4. It is a diagram. 1.-...Coil terminal, 2-.-Coil, 3.-
1---Printed circuit board, 4---Conductor wire, ■, ■, ■
−・・− Excitation phase. (7884) Patent Attorney Yasutake Oon Figure 1 Figure 2

Claims (1)

[Claims] (1) In an N-phase face-to-face motor in which a magnet, a stator yoke, and a printed circuit board for coil wiring are arranged face-to-face, and each phase has M coils,
A surface facing motor characterized in that M coils of each phase are formed of one conductive wire.