JPS6281945A - Core of rotary electric machine - Google Patents

Abstract

PURPOSE:To make it possible to form a core of one shape of segment cores only by providing four core bolt holes to each segment core. CONSTITUTION:Four core bolt holes 3-6 are provided to a segment 1. One core bolt hole 3 with the other 5 and 4 with 6 form an angle of theta/2 degrees (theta: angle of segment) respectively. On the other hand, 3 with 4 and 5 with 6 are to form an angle of (slot pitch)X(n+0.5) respectively. The core bolt hole 3 is put on top of 5 and the core bolt hole 4 on top of 6 successively. As the pitch of these core bolt holes slip off by half the slot pitch angle one another, the slots after laminated can be trued up in the same position.

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a core of a rotating electric machine.

[Conventional technology]

8 and 4 show a segment core in a conventional rotary electric machine core, and FIG. 6 shows a combined structure thereof. In the figure, (2) is a slot, (7
) is segment core X % 1B + another segment core Y% (91QQ is the core bolt hole P and Q provided in segment core and S.

Next, the operation will be explained. If the number of slots to be provided in the segment core is an odd number and the number of core bolt holes is two, the segment core X has half of the slots (2) at both ends of the segment. 2] Segment core Y provided with
Two types (8) are manufactured. In other words, the two core bolt holes are spaced apart from each other by an angle of '/2 (where θ is the angle of the segment, and when N is the number of segment divisions, 860>). Therefore, the core bolt hole P (9) and the core bolt hole QαQ are separated by an angle ζ, and the core bolt hole R (b) and the core bolt hole Saa are also separated by an angle %. Segment core x (7) and segment core Y (8) are connected by aligning core bolt holes P (92 and core bolt holes RQυ), and aligning core bolt holes Q, (11 and core bolt holes S4) as shown in Figure 6. Laminated on.

[Problems that the invention attempts to solve]

Conventional segment cores are constructed as described above, so two types of core shapes are required, which poses problems such as an increase in the number of extraction tools and a large number of post-work setup changes. The drawbacks were that it took a long time 2 and the cost of tools increased.

This invention was made in order to solve the above-mentioned problems, and aims to form a core using only segment cores of one shape.

[Means for solving problems]

The segment core according to the present invention has four core bolt holes, and the four core bolt holes AND θ
θ, A and O are 4 degrees, B and D are 4 degrees
A and B form an angle of (slot pitch angle)
×(n+0.5)ry: a and D form the same angle (slot pitch angle) X(n+0.5).

[Effect]

By using two of the four core bolt holes in this invention and shifting the slot pitch by half, the same effect as making the segment core of the 217111 type can be produced.

〔Example〕

An embodiment of the present invention will be described below.

In FIG. 1, C11 is a segment core, (2) is a slot, (3J is a core bolt hole A, +41 is a core bolt hole B1 (5) is a core bolt hole 0, (61 is a core bolt hole).

Next, the operation will be explained. As for the core bolt holes, the core bolt hole A C31, the core bolt hole C (5), and the core bolt hole B14) and the core bolt hole D (6) are sequentially overlapped.

Since the pitches of these core bolt holes are shifted from each other by half the slot pitch angle, the slot positions after stacking can be aligned at the same location, as shown in FIG.

〔Effect of the invention〕

As described above, according to the present invention, one type of punching shape is achieved by providing four core bolt holes in the segment core, so that the punching tool P can be rationalized and an inexpensive device can be provided.

[Brief explanation of drawings]

FIG. 1 is a front view showing an example of the segment core used in the present invention, FIG. 2 is a front view showing the laminated state of the core of the present invention, and FIGS. 8 and 4 are front views of conventional segment cores. , FIG. 5 is a front view showing the laminated state. In the figure, (1) is a segment core, (2) is a slot, (
3) is core bolt hole A, 141 is core bolt hole 1t61
is the core bolt hole 0, and +61 is the core bolt hole. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Claims] In the so-called segment core method in which the core of a rotating electrical machine is circular and divided into fan shapes, if the number of slots in one segment is an odd number, the core back has four core bolt holes, A core for a rotating electric machine, characterized in that two of the cores are at an angle of (slot pitch angle) x (n+0.5) [where n is an integer].