JP2003009481A - Insulator mounting apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To constitute an insulator mounting apparatus for an armature of a simple structure at a low cost, not being affected by the change of the number of fins. SOLUTION: An insulator mounting apparatus 20 is so constituted of an inside pressing part 21 and an outer pressing part 22 as to allow independent operation. The vicinity of a boss 12 of an insulator 8 is pushed down by a center side pushing protrusion 29 provided at the bottom end of the center part of the inside pressing part 21, to make the standing wall part 18 of a fin cover 13 engaged with the core groove 19a on the outer peripheral side from the core groove end part 19 for positioning the radial inside. Then, the outer peripheral part of the side wall 15 constituting the fin cover 13 is made to be engaged with the core groove 19a by pushing down the outer pressing part 22 for positioning the outer peripheral part. Furthermore, the inside pressing part 21 and the outer pressing part 22 are pushed down simultaneously to mount the insulator 8 on the armature 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insulator mounting device used when an armor chair of a motor is covered with an insulating insulator.

[0002]

2. Description of the Related Art As shown in FIG. 2, a rotor of a motor 1 comprises a shaft 2, an armor chair 3 provided around the shaft 2, and an insulator 8 fitted on the armor chair 3. The armor chair 3 has a circular shape in the radial direction of the shaft 2, and a plurality of fins 6 are radially formed on the outer peripheral side thereof as shown in FIG. Each fin 6 is covered with a fin cover 13 formed on a part of the insulator 8, and a coil 9 is wound around the fin cover 13.

The insulator 8 is attached to the armor chair 3
In order to cover the armor chair 3, the insulator 8 is placed on the armor chair 3, and the fin covers 13 are aligned with the fins 6 of the armor chair 3.
The outer peripheral side of the air cylinder is pressed by the tip of the telescopic rod of the air cylinder for positioning, and is pressed by the pressing member from above. JP-A-11-41877 is similar to this.

[0004]

By the way, in the above-described insulator mounting device, since it is necessary to dispose the air cylinder around each insulator for each fin cover, a large number of air cylinders are required, and the device is It is large and has a complicated structure, and the manufacturing cost is high. Moreover, if the positioning takes a relatively long time and the number of fins changes, it is necessary to remake it because the arrangement of the air cylinders cannot be handled differently in the previous devices, so even if the number of fins changes. Versatility was required so that they could be used in common. Therefore, an object of the present invention is to provide an insulator mounting device that has a relatively simple structure, is compact and inexpensive, and can be used universally even if the number of fins changes.

[0005]

In order to solve the above-mentioned problems, an insulator mounting device according to the present invention is applicable to an armor chair of a motor in which a plurality of fins serving as cores of a winding are radially provided. In the insulator mounting device used to cover the resin insulator with the plurality of radially arranged fin covers, the insulator is pressed against the armor chair, and the pressure is applied to cover the fins with the corresponding fin covers. The pressing member is provided with an inner pressing portion for positioning the radially inner end portion of the fin cover and an outer pressing portion for positioning the outer peripheral portion of the fin cover. It is characterized in that they are coaxially combined inside and outside so that they can be pressed separately.

[0006]

Since the pressing member constituting the insulator mounting device is composed of the inner pressing portion and the outer pressing side portion that move independently of each other, the fin cover is preliminarily aligned with the fins of the armature. The inner part of the fin cover by pressing only the inner pressing part and pressing the center part of the insulator to the armor chair, and then positioning the inner side of the fin cover in the radial direction, and then pressing the outer pressing side part to the outer peripheral part of the fin cover. Since the inner side in the direction is positioned, the outer peripheral portion can be easily positioned relative to the fin outer peripheral portion of the armor chair. When the inner pressing portion and the outer pressing side portion are pressed against the insulator at the same time, the fin cover is entirely covered with the fins of the armature, and the insulator can be attached to the armor chair.

Therefore, unlike the conventional case, an air cylinder is not required for each fin cover, so that the structure is relatively simple and compact, the manufacturing cost is low, and the positioning is easy. Moreover, even if the number of fins changes, they can be used in common, increasing versatility.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment will be described below with reference to the drawings. 1 is a full sectional view of the apparatus of this embodiment, FIG. 2 is an axial sectional view of a motor related to this embodiment, and FIG.
-3 is a partial cross-sectional view of a portion corresponding to line 3, FIG. 4 is a view showing the insulator from one side in the axial direction, FIG. 5 is a view showing the insulator from the side opposite to FIG. 4, and FIG. 6 is a cross-sectional view taken along line 6-6 of FIG. Figure 7
Is a perspective view showing a part of each of the insulator and the armor chair, FIG. 8 is an explanatory view of the fitting of the fin cover into the core groove, and FIG. 9 is a view illustrating an insulator attaching step.

First, in FIG. 2, the rotor of the motor 1 is integrated with an armor chair 3 in which a large number of ferromagnetic metal plates are laminated around the shaft 2. As shown in FIG. 3, the armor chair 3 has a hub portion 5 around the shaft hole 4 and extends radially from the hub portion 5. Multiple fins 6
Is provided, and an overhanging portion 7 that spreads in the circumferential direction is formed at the outer peripheral end of each fin 6. As shown in the enlarged portion in the figure, an insulator 8 is placed around each fin 6,
The coil 9 is wound from above.

The insulator 8 is, as shown in FIG.
The armature 3 is provided in a pair so as to cover both axial end surfaces of the shaft 2. As shown in FIGS.
Each of the insulators 8 is made of an appropriate insulating resin so as to form a substantially circular shape when viewed from the axial direction, and has an end wall 10 that is a portion that overlaps the hub portion 5 of the armor chair 3. The end surface wall 10 extends in the radial direction with respect to the central axis C of the shaft 2, and a shaft hole 11 is provided in the central portion thereof.
A boss 12 that surrounds the shaft hole 11 and projects to one axial side of the shaft 2 is integrally formed.

On the outer peripheral portion of the end face wall 10, a plurality of fin covers 13 radially extending outward in the radial direction are integrally formed. As shown in FIGS. 4A and 5B, the fin cover 13 has a substantially U-shaped cross section having a ceiling wall 14 and left and right side walls 15, and a space 16 surrounded by these wall portions is
When the state shown in FIG. 6 is taken as a reference, the lower side is opened, and the fins 6 can be fitted therein. The ceiling wall 14 is continuously formed on the extension of the end face wall 10.

Further, as shown in B portion of FIG. 4 and A portion of FIG. 5, at the tip portion of the fin cover 13, the tip end side of each side wall 15 corresponding to the projecting portion 7 of the armor chair 3 is bent outward. Each protruding portion 1
7 overlaps the surface of the protruding portion 7 of the fin 6, and
A slit that is continuous with the space 16 is formed between the protruding portions 17 that face each other.

In FIG. 4, one side of the insulator 8 is arranged along the axial direction C of the shaft 2 (left side in FIG. 2).
It is a figure shown from FIG. 3, and A part in the figure is A of the fin cover 13.
-A line cross section is shown, B shows the end surface shape of the fin cover 13 in the arrow direction. FIG. 5 is a view showing the insulator 8 from the side opposite to that of FIG. 4, in which the portion A is an enlarged view of the outer peripheral side of the fin cover 13, and the portion B is a cross section taken along the line BB.

The end portions of the adjacent fin covers 13 on the radially inner side of the insulator 8 are connected by a vertical wall portion 18. The upright wall portion 18 extends to the outer peripheral portion of the end surface wall 10 in a direction parallel to the axial direction of the shaft 2 and opposite to the boss 12.
As is apparent from FIGS. 5 and 5, the curved shape is formed so as to overlap the surface side of the core groove end portion 19 as shown in FIG. The core groove end portion 19 is an end portion of the core groove 19a formed between the adjacent fins 6 in the radial direction of the armature 3, and is curved similarly to the standing wall portion 18 to be continuous to the adjacent fins 6. There is.

This insulator 8 is a fin cover 1
By covering the fins 6 of the armor chair with 3 and fitting the fins 6 into the space 16, the adjacent fins 6 are insulated from each other. Also, a pair of insulators 8 are prepared, and are covered from both sides in the axial direction of the armor chair 3.

FIG. 1 shows an insulator mounting device 20 for covering the armor chair 3 with the insulator 8. The insulator mounting device 20 includes an end face wall 10 of the insulator 8 and a ceiling wall 14 of the fin cover 13.
Is provided with an inner pressing portion 21 for pressing and an outer pressing side portion 22 for pressing the outer peripheral side of the insulator 8 so as to be independently operable. It has a guide shaft 24 protruding inward.

The inner pressing portion 21 is provided with a hollow shaft 25 into which the guide shaft 24 and the boss 12 of the insulator 8 are fitted in the central portion, and a handle 26 is attached to the upper end portion thereof. A large-diameter concave portion 2 into which a boss 12 is fitted is attached to the lower end portion.
7 is provided. Further, on the outer peripheral portion of the portion where the large-diameter recess 27 is provided, a circular flange 28 that spreads in a direction orthogonal to the axis with a radius substantially equal to the radius of the insulator 8.
Are integrally formed.

The lower end of the hollow shaft 25 forms a central-side pressing projection 29 which projects downward from the circular flange 28 by a dimension d. The central-side pressing protrusion 29 is located radially inward of the standing wall portion 18 and the core groove end portion 19, and the inner pressing portion 21.
When the insulator 8 is pressed, the central-side pressing protrusion 29 comes into contact with the vicinity of the boss portion 12 on the end face wall 10 before the circular flange 28.

On the other hand, the outer pressing side portion 22 has a boss 30 that overlaps the outer periphery of the hollow shaft 25 and a large diameter portion 31 that can cover the entire insulator 8. The inner diameter of the outer peripheral wall 32 is the insulator 8 and the armor. It is slightly larger than each outside diameter of the chair 3. The axial width, which is the height of the outer peripheral wall 32, is the height of the fin cover 13 (the axial dimension of the side wall 15).
Is almost equal to.

Next, an insulator mounting process using this apparatus will be described. FIG. 1 shows a state in which the insulator 8 is placed on the armor chair 3 and the insulator mounting device 20 is placed thereon, and the boss 12 is fitted into the large-diameter recess 27 of the hollow shaft 25. In this state,
When the inner pressing portion 21 is pushed down while holding the handle 26,
The state becomes as shown in A of FIG.

In this state, the boss 1 of the end wall portion 10 is
Since the central side pressing protrusion 29 pushes only the portion in the vicinity of 2,
Only the lower part of the standing wall portion 18 is pushed into the core groove 19a. FIG. 8 illustrates this, and the arc width W1 of the standing wall portion 18 and the arc width of the core groove end portion 19 with which it fits are also equal to W1, but the core groove 19a is directed radially outward. Groove width is gradually increasing.

Therefore, as shown in FIG. 9A, the standing wall portion 1
When only the 8 side is pushed down, the fin cover 13 is tilted, the lower end portion of the standing wall portion 18 is pushed outward in the radial direction, and fits into the core groove 19a at a position outward from the core groove end portion 19. Therefore, as shown in FIG. 8, the core groove end portion 19 having an arc width W1 is pushed into a portion having a wider groove width W2 (W1 <W2) outside.

At this time, since the groove width W2 of the core groove 19a into which the lower portion of the standing wall portion 18 is pushed is wider than the circular arc width W1 of the standing wall portion 18, the lower portion of the standing wall portion 18 is easily inserted into the core groove 19a. Then, the portion of the fin 6 near the core groove end 19 which is the radially inner end is fitted into the space 16 of the fin cover 13. At the same time, the outer peripheral portion of the lower portion of the side wall 15 in the vicinity of the protruding portion 17 projects outward in the radial direction from the protruding portion 7 of the fin 6.

Therefore, as shown in FIG. 9B, when the outer pressing side portion 22 is pushed down, the lower portion of the side wall 15 protruding from the projecting portion 7 is pushed down. At this time, the side wall 15 is deformed toward the inside of the core groove 19a as shown in FIG. 8 due to the interference with the protruding portion 7, so that the side wall 15 is easily fitted into the core groove 19a and the outer peripheral portion is positioned. The overhang 17 overlaps the surface of the overhang 7 of the fin 6.

Then, as shown in FIG. 9C, when the inner pressing portion 21 and the outer pressing side portion 22 are pushed down simultaneously, the side wall portion 15 of the fin cover 13 is entirely fitted into the core groove 19a, and at the same time. The overhang 17 and the upright wall 18 are entirely overlaid on the surfaces of the overhang 7 and the core groove end 19, respectively, and as a result, the fins 6 are fitted into the space 16 of the fin cover 13.

Therefore, as in the conventional case, the fin cover 1
Since no air cylinder is required for each unit 3, the structure is relatively simple and compact, the manufacturing cost is low, and the positioning is easy. Moreover, even if the number of fins changes, they can be used in common, increasing versatility.

In particular, since the standing wall portion 18 is first pushed into the core groove 19a by the inner pressing portion 21 for positioning, the outer pressing side portion 22 is then positioned with respect to the outer peripheral portion of the fin cover 13. Can be performed on the outer pressing side portion 22 of the.

[Brief description of drawings]

FIG. 1 is a full sectional view of an embodiment.

FIG. 2 is a sectional view of a motor according to an embodiment.

3 is a sectional view taken along line 3-3 of FIG.

FIG. 4 is a view showing the insulator from one axial side.

FIG. 5 is a view showing the insulator from the opposite side to FIG.

6 is a sectional view taken along line 6-6 of FIG.

FIG. 7 is a perspective view showing parts of the insulator and the armature.

FIG. 8 is a diagram illustrating a state in which the fin cover is fitted in the core groove.

FIG. 9 is a diagram showing an insulator mounting process.

[Explanation of symbols]

1: Motor, 2: Shaft, 3: Armor chair, 6:
Fins, 7: Overhang portion, 8: Insulator, 12:
Screws, 13: fin cover, 14: ceiling part, 15: side wall, 16: space, 17: overhang part, 18: standing wall part,
19: core groove end portion, 19a: core groove, 20: insulator mounting device, 21: inner pressing portion, 22: outer pressing side portion

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 5H604 AA08 BB01 BB14 CC01 CC05                       CC15 DA14 DB01 DB16 DB26                       PB03                 5H615 AA01 BB01 BB05 BB14 PP01                       PP08 PP13 QQ02 QQ19 RR02                       SS04 SS09 SS11 SS19

Claims (2)

[Claims] 1. A resin-made insulator having a plurality of fin covers radially provided corresponding to the fins, with respect to an armor chair of a motor in which a plurality of fins serving as winding cores are radially provided. In an insulator attachment device used for covering, the insulator is pressed against an armor chair, and with a pressing member for covering each fin cover with a corresponding fin,
The pressing member includes an inner pressing portion that positions the radially inner end portion of the fin cover and an outer pressing portion that positions the outer peripheral portion of the fin cover. The inner pressing portion and the outer pressing portion are coaxially arranged inside and outside. An insulator attaching device characterized by being combined and being able to press each separately. 2. A vertical wall portion that connects the adjacent fin cover portions on the radially inner side of the insulator by pushing the inner pressing portion is inserted into a core groove formed between the adjacent fins. The insulator mounting device according to claim 1, wherein the inner side of the insulator in the radial direction is positioned by pushing.