JPH09285045A - Stator of dynamo-electric machine and supporting method of its core - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the assembly of a rib and a spring by a method wherein a plurality of fitting trenches are formed in the inner circumference of the cylindrical stator shelf ring of the inner circumference part of a stator in the direction of the axis of a dynamo-electric machine and spring plates are fitted to the fitting trenches and a stator core is fixed to the spring plates with ribs which have their long axes in a rotary shaft direction. SOLUTION: Fitting trenches 6 are provided in a dynamo-electric machine stator shelf ring 5 by machining. A rib 2 and a spring plate 3 which are assembled beforehand are fitted to each fitting trench 6 and fixed by the tightening of tightening bolts 4. As the fitting trench 6 is formed by machining, dimensions 9 between the fitting trench 6 and a stator shelf ring 5 and a shaft center 8 and an angle 10 between the adjacent fitting trenches 6 in a circumferential direction are accurate, so that the ribs 2 and the spring plates 3 are easily fixed and their positions are easily adjusted by fitting them to the fitting trenches. With this constitution, the position accuracy can be improved, the number of assembled component is reduced and the working time can be shortened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotating electric machine stator core support structure.

[0002]

2. Description of the Related Art A conventional art will be described with reference to a sectional view of a conventional rotary electric machine stator core support structure shown in FIG. A stator core 1 of a rotating electric machine is assembled with ribs 2 arranged at equal intervals on an outer peripheral portion of the core 1 as a guide, and is supported and fixed to a stator shelf ring 5 via a spring plate 3.

The spring plate 3 and the stator shelf ring 5 are supported and fixed to the fixed portion by inserting a reamer sleeve 7 to prevent the rib 2 and the spring plate 3 from moving due to vibration or the like and tightening and tightening them with tightening bolts 4. ing.

[0004]

Generally, the reamer sleeve 7 is used.
The screw holes of the insertion hole and the tightening bolt 4 are processed by using a pilot hole (not shown) which is previously processed in the spring plate 3 as a guide. In this case, the work of adjusting the assembly position of the spring plate 3 is indispensable. In addition, there is a problem that the work takes a long time because of the alignment process with the spring plate 3. It is an object of the present invention to provide a rib / spring plate assembling work by providing a rib / spring plate fitting groove on a stator shelf ring of a rotating electric machine.

[0005]

According to the present invention, there is provided a stator of a rotary electric machine, a stator rack ring provided in a cylindrical shape on an inner peripheral portion of a stator of the rotary electric machine, and an inner peripheral surface of the stator rack ring. A plurality of fitting groove portions provided in the rotating shaft direction of the rotating electric machine, spring plates fitted in the fitting groove portions, and fixed by ribs held by the spring plates and having a long axis in the rotating shaft direction. And a stator core.

Further, according to the present invention, there is provided a method for supporting a stator core of a rotating electric machine, wherein a rotating shaft of the rotating electric machine is provided on an inner peripheral surface of a stator rack ring provided in a cylindrical shape on an inner peripheral portion of a stator of the rotating electric machine. Characterized in that a plurality of fitting groove portions are provided in a direction, a spring plate fitted to the fitting groove portion is provided, and a stator iron core of a rotating electric machine is supported by a rib held by the spring plate and having a long axis in the rotation axis direction. And

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to FIGS. The rotating electric machine stator shelf ring 5 is provided with a fitting groove portion 6 by machining, and a pair of ribs 2 and spring plates 3 previously combined are inserted into the fitting groove portion 6 and tightened with a tightening bolt 4 to be fixed. Since the fitting groove portion 6 is linear, the rib 2 and the spring plate 3 can be reliably positioned and fixed.

Next, the operation of this embodiment will be described. FIG.
In the fitting groove portion 6 provided by machining in the above, the dimension 9 from the axial axis 8 of the stator shelf ring 5 and the angle (pitch) 10 in the mutual circumferential direction of the fitting groove portion 6 are accurate. By fitting, the rib 2 and the spring plate 3 need not be assembled and adjusted in position. Further, because of the fitting method, the fixing force and the positional accuracy of the rib 2 and the spring plate 3 are improved, the number of parts to be assembled can be reduced, and the working period can be shortened.

[0009]

According to the present invention, by providing a groove on the stator shelf ring and fitting the rib and the spring plate, it is possible to omit the adjustment of the assembly position, shorten the working period, and reduce the number of the assembled parts. An electric machine stator core support structure can be provided.

[Brief description of drawings]

FIG. 1 is a sectional view of a main part of a stator of a rotary electric machine according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a main part of a stator of a rotary electric machine according to an embodiment of the present invention.

FIG. 3 is a sectional view of a main part of a conventional stator of a rotating electric machine.

[Explanation of symbols]

 1 ... Stator core 2 ... Rib 3 ... Spring plate 4 ... Tightening bolt 5 ... Stator shelf ring 6 ... Fitting groove part 7 ... Reamer sleeve 8 ... Shaft core 9 ... Dimension from shaft core 10 ... Angle (pitch).

Claims (2)

[Claims] 1. A stator shelf ring provided in a cylindrical shape on an inner peripheral portion of a stator of a rotating electric machine, and a plurality of fittings provided on an inner peripheral surface of the stator shelf ring in a rotation axis direction of the rotating electric machine. Rotation comprising: a mating groove portion, a spring plate fitted in the fitting groove portion, and a stator core held by the spring plate and fixed by a rib having a long axis in the rotation axis direction. Electric machine stator. 2. A plurality of fitting groove portions are provided in an inner peripheral surface of a stator shelf ring, which is provided in a cylindrical shape on the inner peripheral portion of a stator of the rotating electric machine, in a rotation axis direction of the rotating electric machine, and the fitting groove portions are provided in the fitting groove portions. A method of supporting a stator core of a rotary electric machine, comprising: providing a spring plate to be fitted; and supporting the stator core of the rotary electric machine by a rib held by the spring plate and having a long axis in the rotation axis direction.