JPS62228378A - Rotor assembly jig - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of the Invention] The present invention relates to a rotor assembly jig for attaching equally divided annular magnet pieces to a rotor, particularly a rotor of a small motor.

[Prior art and its problems]

As shown in FIG. 8, the rotor 1 of the small motor includes a first disc 3 and a rotating shaft 4 provided in the center of the first disc 3 in a direction perpendicular to the first disc 3. A magnet piece 6 is placed on the first disk 3 along the inner peripheral surface of the side wall 5 of the rotor yoke 2. As shown in FIG. 9, it is attached with an adhesive.

The magnet piece 6 described above is formed by dividing an annular magnet piece into equal dimensions, as shown in the plan view of FIG. 10 and the side view of FIG. 11. The magnet pieces 6 are attached to the rotor yoke 2 of the rotor 1 at equal intervals as shown in FIGS. 8 and 9. Conventionally, an operator used an assembly gauge to place magnet pieces on the inner wall at equal intervals and attached them with adhesive.

However, this method has disadvantages in that it takes a long time to paste and is difficult to achieve accuracy because it is done manually.

[Purpose of the invention]

In view of the above-mentioned points, the present invention provides a rotor assembly jig that allows magnet pieces of an annular magnet divided into equal parts to be affixed to a rotor yoke at equal intervals and accurately in a short time by a simple operation. The purpose is to provide

[Summary of the invention]

According to the present invention, a cylindrical shape having a rotation axis perpendicular to the first disc at the center of the first disc, and a cylindrical shape provided perpendicularly to the periphery of the first disc. An assembly jig for pasting the magnet pieces in a rotor in which a plurality of magnet pieces of the current magnet divided into equal parts are pasted on a first disc across the inner peripheral surface of the side wall of the rotor, comprising: It has a second disc smaller in diameter than the inner circumferential circle formed by the magnet piece, and a cylinder concentrically protruding from an end face of the second disc, and further includes a second disc whose diameter is smaller than the diameter of an inner circumferential circle formed by the magnet piece, and a cylinder protruding concentrically from a different end face of the second disc, an upper support provided with a hole for accommodating the shaft; a support having an end surface larger than the outer diameter of the side wall of the first disk; and a support having an end surface having the same diameter as the second disk from the end surface of the support. a third disc that protrudes and on which the second disc is placed concentrically, and further provided with a hole for guiding the column of the upper support from the end face of the third disc; support.

A spacer is provided on each side of the second and third disks so that it can be inserted into the arrangement gap of each of the magnet pieces to be pasted, and a spacer is provided on each side of the 2g2 and thin 3 disks. A leaf spring that straddles and is arranged between the spacers and is further restrained at one end by the spacer of the second disk and at the other end by the third spacer, and for rotating the upper support member from the outside. and a rotating means for inserting the rotating shaft of the rotor into the hole of the upper support member to rotate the second disc and the third disc with matching spacers overlapping the end faces of the side walls of the first disc. This is achieved by covering the disc and placing it on the end face of the support base.

[Embodiments of the invention]

The present invention will be described in detail below based on the drawings.

1 is a side view of a rotor assembly jig according to an embodiment of the present invention, FIG. 2 is a perspective view of an upper support with a second disk in the assembly jig of FIG. 1, and FIG. The figure is a perspective view of the lower support with a third disc housing the upper support of FIG. 2. In addition, Figures 1 to 3 and Figure 4, which will be described later,
In the figures through FIG. 7, the same parts as in FIGS. 8 through 11 are given the same reference numerals. In FIG. 2, the lower support 11 includes a second disk 12 having a diameter smaller than the diameter of the inner circumferential circle formed by the magnet pieces 6 of the rotor 1 shown in FIG. It protrudes from the end face and is composed of a second disc 12 and a concentric cylinder 13, and a rotor 10 rotation shaft 4 (see FIG. ) is provided. Then, an arrangement gap 15 for the magnet pieces 6 formed by equally dividing the annular magnet on the side surface of the second disk 12 (see FIG. 9)
U-shaped spacers 16, which can be inserted into the respective parts, are attached at equal intervals. The lever 17 is detachably attached to the cylinder 13, for example, by a screw, and is configured as a rotating means for rotating the upper support 11, as will be described later.

In FIG. 3, the lower support 20 is connected to the side wall 5 of the rotor 1 (
(see FIG. 8);
from the end surface of the third disk 21 to the cylinder 13 (second (see figure) is inserted to guide rotation. Further, the third disk 21 is provided with a U-shaped spacer 24 at the same position as the spacer 16 (see FIG. 2) provided on the side surface of the second disk 12. A window 25 is provided which penetrates the wall forming the hole 26, opens into the hole 26, and into which a lever 17 (see FIG. 2) can be inserted and rotated.

Note that the sum of the thicknesses of the second disc 12 and the third disc 21 is equal to or less than the thickness of the magnet piece 6, and the first disc 3 and side wall 5 of the rotor 1 are disk 12.21 and spacer 16.2
K is used so that it can cover 4 and 4.

FIG. 1 shows that the cylinder 13 of the upper support 11 is inserted into the hole 26 of the lower support 20, and the second disk 12 is concentrically inserted into the third disk 2.
1, and the respective spacers 16 and 24 are arranged at the same position. Then, the spacers 16 and 2 are arranged so as to straddle the sides of the second disc 12 and the third disc 21.
A leaf spring 28 is disposed between the 4 and 4. As shown in FIG. 4, the leaf spring 28 is provided with convex portions 29 and 30 at both ends. As shown in FIG. 5, which is a detailed view of the P section of FIG. The convex portion 30 at the other end of the second disk 120 is inserted into a concave portion of a spacer 16 (not shown), and the leaf spring 28 is restrained by the spacer 16.24.

Note that the lever 17 is attached to the cylinder 13 through the rear window 25 where the upper support 11 and the lower support 20 are combined.
When assembling, the rotating shaft 4 is inserted into the hole 14 of the upper support 11 as shown by the dashed line, and the end surface of the inner wall 5 of the first disk 2 is placed on the end surface 23a of the support base 23.

In this case, adhesive is applied in advance to the first disc to which the magnet piece 6 is attached and its side wall, and the spacer 16.24 is
As shown in FIG. 6, the spacers 16 and 24 of the second and third discs 12 and 21 are inserted into the arrangement gap 15 of the magnet pieces 6. In this state, when the lever 17 is rotated to rotate the upper support body 11, the second disc 12 rotates the third disc 21. At this time, as shown in FIG. 7, the distance between the spacers 16 and 24 that restrain the leaf spring 28 becomes shorter, so the leaf spring 28 expands and bends, pressing the magnet piece 6 against the inner wall 5 of the rotor yoke. For this purpose, the magnet piece 6 is attached to the rotor yoke with an adhesive.

Further, since the spacers 16 and 24 are arranged at equal intervals on the side surfaces of the second disc 12 and the third disc 21, which have the same diameter and are arranged concentrically, the upper support 11 When the spacers 16 and 24 are rotated, the magnet pieces 6 are sandwiched between the spacers 16 and 24, so that the magnet pieces 6 can be attached to the rotor yoke at equal intervals with high precision.

In this embodiment, the leaf spring is inserted into the recess of the U-shaped spacer to be restrained, but it may also be restrained by being fixed to the side surface of the spacer or a disk to which the spacer is attached using screws or the like.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, since a plurality of magnet pieces formed by equally dividing the rotor yoke KJJl-shaped magnet are arranged and attached at equal intervals, Two disks with a diameter smaller than the circumference are stacked concentrically, and a spacer that can be inserted into the arrangement gap of the magnets is provided on each side of the disk, and a spacer that can be inserted between the sides of the two disks and between the spacers is provided. A leaf spring is provided, one end of which is restrained by the spacer of one of the discs, the other end of the leaf spring is restrained by the sleeve of the disc of the other end, and the leaf spring is further restrained by the spacer of one of the two discs. A supporting stand is connected and has an end face larger than the diameter of the disc, the magnet pieces and the rotor yoke are placed on this end face, and a spacer is inserted into the arrangement gap of the magnet pieces to rotate the other disc. As a result, the distance between the spacers becomes shorter, and the leaf spring swells and bends, pressing the magnet pieces toward the rotor yoke, and the spacers sandwich the magnet pieces, allowing the magnet pieces to be attached accurately and at equal intervals. can. In addition, all the magnet pieces are attached at equal intervals (by rotating motion), so the work can be done in a short time.

[Brief explanation of drawings]

1 is a side view of a rotor assembly jig according to an embodiment of the present invention, FIG. 2 is a perspective view of an upper support that constitutes the rotor assembly jig of FIG. 1, and FIG. 3 is a side view of a rotor assembly jig according to an embodiment of the invention. a perspective view of a lower support that is combined with an upper support to constitute the rotor assembly jig of FIG. 1;
Figure 4 is a plan view of the spring of the rotor assembly jig in Figure 1;
The figure is a detailed perspective view of the circle P section in Figure 1, Figure 6 is a sectional view taken along line A-A in Figure 1 when the rotor yoke and magnet piece are assembled using the rotor assembly jig in Figure 1, Figure 7 is a sectional view taken along line A-A in Figure 1 when the rotor is assembled using the rotor pre-assembly jig in Figure 1, Figure 8 is a sectional view of the rotor, and Figure 9 is B in Figure 8. -B sectional view, FIG. 10 is an array plan view of magnet pieces in which the annular magnet pieces are equally divided, and FIG. 11 is a side view of FIG. 10. 1: rotor, 3: first disk, 4: rotating shaft, 5: side wall,
6: magnet piece, 11: upper support, 12: second disk, 1
3: Cylinder, 14: Hole, 16.24 Varnish spacer, 17:
Lever as rotation means, 2°: Lower support, 21: Third disk, 23: Support stand, @1 Figure 2 Figure 3 Figure 5 Foil 6 Figure tNY Figure

Claims (1)

[Claims] The first disc has a rotation axis in the center thereof in a direction perpendicular to the disc, and further has a rotation axis on the disc along the inner circumferential surface of a cylindrical side wall provided in the perpendicular direction on the periphery of the disc. In a rotor in which a plurality of magnet pieces of an annular magnet divided into equal parts are attached at equal intervals, an assembly jig for attaching the magnet pieces, the second magnet piece being smaller in diameter than the inner circumferential circle formed by the magnet pieces. and a cylinder protruding concentrically from an end surface of the second disk,
an upper support provided with a hole for accommodating the rotating shaft from different end faces of the first disc; a support base having an end face larger than the outer diameter of the side wall of the first disc; a third disc that protrudes and has the same diameter as the second disc, and on which the second disc is placed concentrically; a lower support provided with a hole for guiding the cylinder; a spacer provided on each side of the second and third discs so as to be insertable into the arrangement gap of each of the magnet pieces to be pasted; Spreads over the side surfaces of the second and third discs and is arranged between the spacers, and is further constrained at one end to the spacer of the second disc and at the other end to the spacer of the third disc. and a rotating means for rotating the upper support body from the outside, and the rotating shaft of the rotor is inserted into the hole of the upper support body,
A rotor assembly jig, characterized in that the end face of the side wall of the disc is placed on the end face of the support base, covering the second and third discs and the spacer.