JPS61180563A - Reluctance torque type motor - Google Patents

Abstract

PURPOSE:To simply winding by coupling a plurality of coil bobbins commonly to one flange. CONSTITUTION:A plurality of coil bobbins are provided at a flange 2a for forming a common flange. Flanges 2b of the same number as the number of pole teeth are provided at the coil flanges. Windings are sequentially formed on the coil bobbin section of a coil bobbin 1 formed in this manner. After the winding is completed, the bobbin 1 is formed, and inserted into a stator.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to motors that utilize reluctance torque, such as stepping motors and brushless motors with iron cores, which are used for positioning control and speed control.

BACKGROUND OF THE INVENTION In recent years, reluctance torque type motors have a large torque/volume ratio, and stepping motors have
Because of their excellent controllability, motors that utilize the force exerted by coil currents in a magnetic field (hereinafter referred to as current-force torque motors), which have traditionally been the majority of small motors, are now being reconsidered.

Hereinafter, an example of the conventional reluctance torque type motor mentioned above will be explained with reference to the drawings.

FIG. 5, FIG. 6, and FIG. 7 explain an example of a conventional glue roughtance torque type motor. FIG. 5 shows a conventional coil installed state. In the figure, 6 is a stator core, and 7 is a coil wound around a coil bobbin. Figure 6 is the 6th
The conventional coil bobbin shown in the figure is shown. 9 is a coil bobbin, and 8 is a stator magnetic pole tooth group. FIG. 7 shows an insulator according to another conventional example. 10 is an upper insulator, 11 is a lower insulator, and 8 is a stator magnetic pole tooth group.

A method of winding the stator configured as above will be explained. FIG. 6 shows a method in which predetermined coil windings are wound on the coil bobbin 9 and inserted into the stator magnetic pole tooth groups 8. This method allows the winding to be easily changed and is used for prototypes and some small-scale production types. In FIG. 7, insulators 10 and 11 are inserted from both the upper and lower sides of the stator magnetic pole tooth group 8, respectively. The insulator has the same number of winding frame parts as the number of magnetic pole tooth groups, one each for the upper and lower parts.
It can be done individually. After inserting the insulator, wind the winding from the inner circumferential side of the stator.

Problems to be Solved by the Invention However, in the method shown in FIG. 6, the number of coil bobbins required is equal to the number of magnetic pole tooth groups, and the number of parts is large, which is disadvantageous in terms of cost. Furthermore, the number of wire processing locations in the coil increases, making it more likely that defects will occur.

On the other hand, in the method shown in Fig. 7, the upper and lower insulators each have one
Although it is advantageous that only one insulator is needed, it is necessary to wind the insulator with the insulator attached to the magnetic pole tooth group, which complicates the winding work. In particular, with the inner rotor type, it is necessary to wind the stator from the inner circumferential side, so a special machine is required.
The need to adjust to the stator shape is also a disadvantage.

In view of the above-mentioned problems, the present invention provides a coil bobbin having a structure that is advantageous in terms of cost and can be wound in a relatively simple manner.

Means for Solving the Problems In order to solve the above problems, the coil bobbin of the present invention has the following features:
There is a device characterized by connecting a plurality of coil bobbins with one flange in common.

According to the above-described structure, the present invention requires only one coil bobbin.The coil bobbin is wound in a straight line, and when inserted into the stator core, the coil bobbin is curved into a cylindrical shape and inserted into the stator. Insert into each magnetic pole tooth group from the periphery.

EXAMPLE Hereinafter, a coil bobbin according to an example of the present invention will be described with reference to the drawings.

FIG. 1 shows a coil bobbin 1 in one embodiment of the present invention, in which a plurality of coil bobbin parts are provided. 2
A is a flange member forming a common flange portion, and 2b is a flange B provided in the same number as the number of magnetic pole tooth groups. The flange type has a common flange on one side of each coil bobbin, and is made of visible synthetic resin.

Regarding the coil bobbin configured as above, the following is the second section.
This will be explained using FIG.

FIG. 2 is a diagram showing the coil bobbin of the present invention being wound. The figure is drawn using a three-phase motor as an example, but it goes without saying that it is also valid for any polyphase motor. As shown in the figure, the coil bobbin 1 is stretched linearly and wound. When one coil 3 has been wound, the winding machine or coil bobbin is moved to start the next winding operation. Once the first phase winding is completed, the second phase winding is next done. Hereinafter, polyphase winding will be performed in the same manner.

FIG. 3 shows the coil bobbin of the present invention bent. Coil 3 is not drawn for clarity, but it is actually coil 2.
After the winding in the figure is finished, bend it. In this form, it is inserted into the inner periphery of the stator, and then into each magnetic pole tooth group.

As described above, according to this embodiment, the number of coil bobbins can be reduced to one by connecting a plurality of coil bobbins with one flange of the coil bobbins in common.
Furthermore, the winding method becomes relatively simple.

Furthermore, as shown in Fig. 4, there is a wavy elastic part 4 between each bobbin.
The insertion work can be made easier by inserting the .

Effects of the Invention As described above, in the present invention, by connecting a plurality of coil bobbins by using one flange in common, it is possible to lower the cost of the coil bobbin and to significantly reduce the number of winding man-hours.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the coil bobbin according to an embodiment of the present invention before winding the coil, Fig. 2 is an explanatory view showing the state in which the coil bobbin of Fig. 1 has been wound, and Fig. 3 is the same as that shown in Fig. 1. FIG. 4 is a perspective view of a coil bobbin according to another embodiment of the present invention, FIG. 5 is a plan view showing a state in which the coil bobbin is attached to a stator core according to a conventional example, and FIG. This figure is a perspective view showing how a conventional coil bobbin is mounted, and FIG. 7 is an exploded perspective view showing how another conventional insulator is mounted. 1...Coil bobbin, 21L...Flange person. 2b...Flange B13...Coil. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure/----Goy IL bobbin 2e---Frank 4 2b---Flange ε Figure 2 f---Coil L failure pin horse 3 Figure 4 Figure 6 Figure 7

Claims (1)

[Claims] A rotor core made of a magnetic material having a plurality of uneven magnetic pole teeth at a constant angular pitch on the outer periphery, and a plurality of magnetic pole teeth facing the rotor with a slight air gap and having the same angular pitch as the magnetic pole teeth. A stator core made of a magnetic material having a plurality of magnetic pole tooth groups forming a stator core, and a plurality of multiphase coils wound around a coil bobbin installed in the stator core,
The coil bobbin is a reluctance torque motor in which a plurality of coil bobbins are connected to each other with one flange in common, and the common flange is formed to be bendable.