JP3280901B2 - Jig for positioning magnet material for stator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a jig for positioning a magnet material for a stator.

[0002]

2. Description of the Related Art FIGS. 15A and 15B are views showing a conventional typical stator, in which FIG. 15A is a sectional view and FIG. 15B is a plan view. The stator 100 includes a bottomed cylindrical yoke 10.
At a distance of H from the upper end 101a of the first magnet 102, the magnet 102 (...)
Indicates a plurality. The same applies hereinafter), and a thermosetting adhesive 103 is provided on the inner peripheral surface of the yoke 101 at regular intervals.
It was attached with 104 is a bearing for supporting a rotor shaft (not shown), and 105 and 105 are mounting holes for mounting the stator 100 to a vehicle body (not shown). The stator 100 needs to accurately position the magnets 102 in the height direction and the circumferential direction. If the magnets 102 are not accurately positioned, the positional relationship between the magnets 102 and the rotor deviates, making it impossible to rotate the rotor smoothly.

[0003] To assemble the stator 100, for example, an adhesive 103 is applied to a magnet material (a magnet material before being magnetized).
First, using a “positioning jig”, these magnet materials are arranged at predetermined bonding positions along the inner peripheral surface of the yoke from the opening side of the yoke 101, and then the positioning jig is removed from the inside of the yoke. Next, using a “pressing jig”, the magnet material is pressed against the inner peripheral surface of the yoke to securely adhere the magnetic material to the inner peripheral surface of the yoke, and then the pressing jig is removed from the inside of the yoke. Next, after the adhesive 103 is thermally cured, the magnet material is magnetized into the magnets 102 to obtain the stator 100.

[0004]

However, when the magnet material is moved to a predetermined position in the yoke 101 using the "positioning jig", the outer peripheral surface of the magnet material inevitably touches the inner surface of the yoke 101. The adhesive 103 comes off when touched, or the yoke 101
It is stuck on the inner surface of, which is inconvenient anyway.
There is no problem if the magnet material is sufficiently separated from the inner surface of the yoke 101, but this will increase the diameter of the yoke 101 and make it impossible to achieve a compact motor.

Accordingly, an object of the present invention is to provide a jig capable of skillfully positioning a magnetic material on a small-diameter yoke.

[0006]

Claim 1 in order to achieve the above object In order to achieve the above, the yoke inner circumferential surface of the motor stator, wearing
A magnet material positioning jig used when pasting magnetic material before magnetizing at a predetermined interval, and this jig is
A magnet material with a thermosetting adhesive, a thermosetting adhesive
A guide groove obliquely guided from the center side of the yoke toward the inner peripheral surface in a state separated from the inner peripheral surface of the yoke, and both sides of the magnetic material to guide the mounting angle of the magnetic material approaching the inner peripheral surface. And a guide piece.

The magnet material is guided obliquely from the center of the yoke toward the inner peripheral surface by a guide groove. Next, both sides of the magnet material approaching the inner peripheral surface are further guided by the guide pieces. Since the magnet material is sufficiently separated from the inner peripheral surface of the yoke from the start of the operation to the positioning, there is no fear that the adhesive will touch or peel off the inner peripheral surface of the yoke. Therefore, the efficiency of the mounting operation of the magnet material can be improved.

Further, since the magnet material prior to magnetization takes affixed inside circumference yoke can be attached a magnet material into the peripheral surface yoke without obtaining the attraction force of the magnet.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of reference numerals. FIG. 1 is an exploded perspective view of a stator magnet sticking device according to the present invention. The stator magnet sticking device 1 has a cylindrical yoke 2 formed in a bottomed cylindrical shape.
(Only one of the four magnets is shown), and a magnet material 5 extending to the first jig 10.
... and a positioning jig 2 for guiding
The four pressing jigs 30, which define the positions for more precisely positioning the magnet materials 5 guided at 0, and the magnet material 5 positioned at these pressing jigs 30, on the inner peripheral surface of the yoke 2. Four second extrudes radially outward to attach to 2a
A jig 40, a third jig 50 set from above the yoke 2 to determine the position of the upper surface 5 b of the magnet material 5, and a third jig 50 that pushes up the magnet material 5 toward the third jig 50. 4 jigs 60. Hereinafter, each configuration will be described in detail. The magnet material 5 is a material in which a thermosetting adhesive 7 is applied to the outer peripheral surface in advance.

The first jig 10 includes a cylindrical portion 11 inserted into a bearing mounting portion 2b provided on the bottom of the yoke 2, a rectangular plate 12 integrally formed on the cylindrical portion 11, and a rectangular plate 12 formed on the cylindrical portion 11. Leaf spring 1 as an elastic member fixed with screws 13.
4 and a through hole 15 vertically penetrating the columnar portion 11 and the rectangular plate 12. Reference numeral 16 denotes a concave portion provided at a corner of the rectangular plate.

The positioning jig 20 includes an upper part 2 c of the yoke 2.
, And four guide pieces 23 formed integrally with the ring 21 at equal intervals in plan view and provided with guide grooves 22 on both wall surfaces. The guide piece 23 extends radially from the inner peripheral surface 2 a side of the yoke 2 toward the center of the yoke 2. The guide grooves 22 provided on both wall surfaces of the guide piece 23 are both edges 5c as both sides of the magnet material 5.
, And guides the magnetic material 5... Obliquely from the center of the yoke 2 toward the inner peripheral surface 2 a. Guide groove 2
2 will be described in detail with reference to FIG.

The ring 21 projects a positioning pin 25 inward from the inner peripheral surface. The positioning pin 25 is fitted into the concave portion 2 d of the upper part 2 c of the yoke 2 to move the positioning jig 20 relative to the yoke 2. In the direction. One guide piece 23 projects a positioning pin 26 downward from the lower end, and this positioning pin 26 is inserted into the recess 16 of the rectangular plate 12 (first jig 10) to position the first jig 10 at a predetermined mounting angle. Is what you do.

The pressing jig 30 is formed by bending a leaf spring, and has a lower open U-shaped upper mounting portion 30 a for fitting into the upper portion 23 a of the guide piece 23, and an upper mounting portion 3.
A stopper piece 30b extending laterally from the side wall of the upper mounting portion 30a and an elastic pressing piece 30c extending downward from the side wall of the upper mounting portion 30a.
Consists of The stopper piece 30 b prevents the pressing jig 30 from moving radially inward along the guide piece 23. The tip of the elastic pressing piece 30c is the guide piece 2
In the state in which the upper mounting portion 30a is fitted to 3, it is inclined in the circumferential direction of the ring 21 and in a direction away from the fitted guide piece 23.

The second jig 40 includes a bolt 41 screwed into the third jig 50, a lock nut 42 for locking the bolt 41, a ball 43 disposed inside the bolt 41 and protruding from the tip. A compression spring 44 (shown in FIG. 4) for pushing the ball 43 outward.

The third jig 50 has a cylindrical portion 51 for mounting the four second jigs 40 at equal intervals in a plan view and an upper surface 5b of the magnet material 5 formed on the cylindrical portion 51. A substantially cross-shaped lower plate 52 for positioning, and an upper portion 2c of the yoke 2 formed integrally with the upper portion of the lower plate 52
And a through hole 54 penetrating from the upper plate 53 to the columnar portion 51. The upper plate 53 is provided with four step portions 53 a provided at the tip for mounting on the upper portion 2 a of the yoke 2, and one groove 5 that fits into one guide piece 23 and the pressing jig 30.
3b. The groove 53 b is
And the second jig 40... And the third jig 50 are arranged at predetermined mounting angles by fitting into the pressing jig 30.

The fourth jig 60 includes a pull-up rod 63 provided with a stopper 61 at the lower end and a notch groove 62 inclined at the upper end, and a pin 64 inserted into the notch groove 62.
The lever 65 is attached to the lever 5a, and the lifting rod 63 is pulled up by the lever 65.

FIG. 2 is an enlarged view of a part 2 of FIG. 1, in which the magnet pieces 5... (Shown in FIG. A state in which guide grooves 22, 22 for guiding are provided is shown. Guide groove 22
Is a V-shaped groove tapered downward,
The outer edge 22a extends vertically downward from the upper portion 23a of the guide piece 23, and the inner edge 22b extends from the center side of the yoke to the inner peripheral surface 2a.
a, and the groove bottom 22c is extended toward the tip 22e (the intersection of the outer edge 22a and the inner edge 22b), so that the slide surface (inclined groove surface) 22d inclined from the yoke center side to the outside and the vertical groove This is a groove having a surface 22f.

For this reason, the guide groove 22 restricts the edge 5c of the magnetic material 5 shown in FIG. 1 so as not to move in the circumferential direction by the vertical groove surface 22f.
Can be guided radially outward from the yoke center side by the slide surface 22d. Since the magnet material 5 is guided outward, the adhesive 7 applied to the outer peripheral surface of the magnet material 5 can be lowered to a predetermined attaching position without contacting the inner peripheral surface 2a.

FIG. 3 is a plan view of an apparatus for attaching a magnet for a stator according to the present invention.
(Shown at the lower left in the figure) is fitted into the pressing jig 30 and the guide piece 23, and the second and third jigs 40 and 50 are positioned at a predetermined mounting angle. It is extruded in the counterclockwise direction to define the mounting angle of the magnet materials 5 (positioning the magnet materials 5 in the circumferential direction), and to use the second jig 40.
Of the magnet material 5 by the balls 43 of the inner peripheral surface 2a of the yoke 2.
Shows the state pressed against.

FIG. 4 is a sectional view taken along line 4-4 of FIG.
By pulling up the pulling rod 63 of the jig 60 with the lever 65, the column portion 11 of the first jig 10 is pulled up by the height H1 from within the bearing mounting portion 2b, and the upper surface 5b of the magnet material 5 is pulled up. 3 shows a state in which the magnet material 5 is arranged at a position of a height H2 from the upper surface 2e of the yoke 2 by contacting the lower plate 52 of the jig 50. The second jigs 40 are provided with compression springs 44 (corresponding to elastic members) for pressing the magnetic material 5 to the inner peripheral surface 2a of the yoke 2 with the balls 43. Lever 6
5 has a cam portion 65a in which the radius of the cam surface gradually increases from the P1 position to the P2 position around the pin 64.

FIG. 5 is a sectional view taken along the line 5-5 in FIG.
This shows that the first jig 10 has been positioned on the positioning jig 20 by positioning the positioning jig 20 on the yoke 2 and inserting the positioning pins 26 into the concave portions 16 of the rectangular plate 12.

FIG. 6 is a development view taken in the direction of arrow 6 in FIG. 5, showing a state in which the pressing jigs 30 are fitted to the guide pieces 23. Since the elastic pressing piece 30c of the pressing jig 30 on the right side of the drawing presses the right edge 5c of the magnet material 5 leftward, the magnet material 5 hits the guide piece 23 on the left side of the drawing. Therefore, the magnet material 5 is positioned at a predetermined position on the yoke 2.

The operation of the above-described stator magnet sticking apparatus 1 will now be described. FIGS. 7A and 7B are explanatory diagrams of a first operation of the apparatus for attaching a magnet for a stator according to the present invention. (A), the hole 70a of the fixing table 70;
Then, the outer peripheral portion of the bearing mounting portion 2b of the yoke 2 is fitted. Next, the first jig 10 is attached to the pulling rod 63. Thereafter, the lifting rod 63 is inserted into the yoke 2. In (b), by fitting the cylindrical portion 11 of the first jig 10 into the bearing mounting portion 2b, the lifting rod 6
3 is made to stand at the center of the yoke 2. Next, the positioning jig 20 is lowered, and the guide pieces 23 are inserted into the yoke 2.

FIGS. 8 (a) and 8 (b) are views for explaining the second operation of the apparatus for attaching a magnet for a stator according to the present invention, and FIG.
Shows a cross section taken along the line bb in FIG. 3A, the positioning jig 20 is set on the upper surface 2e of the yoke 2. Next, an adhesive 7 is applied to the outer peripheral surface of the magnet material 5. Then, the lower end 5a of the magnet material 5 is connected to the inner peripheral surface 2 of the yoke 2.
Inserted in the guide grooves 22... while being inclined in the direction a. (B)
Is to guide both edges 5c, 5c of the magnet material 5 into the guide grooves 22, 2.
2 shows a state inserted.

FIGS. 9 (a) and 9 (b) are explanatory views of a third operation of the stator magnet sticking device according to the present invention. (A)
, Slide surfaces (inclined groove surfaces) 22 of the guide grooves 22.
d, the magnet material 5 is lowered obliquely along the lower end 5a.
Are applied to the inner peripheral surface 2a of the yoke 2. In (b),
When the magnet material 5 is further lowered, the magnet material 5 rises vertically as shown by the arrow along the inner peripheral surface 2a while falling as shown by the arrow.

FIGS. 10 (a) and 10 (b) are views for explaining a fourth operation of the stator magnet sticking apparatus according to the present invention.
(A) is a sectional view, and (b) is a view on arrow b of (a). In (a), the lower end 5a of the magnet material 5 is the first material.
It hits the upper surface of the leaf spring 14 of the jig 10. (B) shows a state in which both edges 5c, 5c of the magnet material 5 are guided by the slide surfaces 22d, 22d of the guide grooves 22, 22, as indicated by arrows, and are placed on the leaf spring 14.

FIGS. 11 (a) to 11 (c) are diagrams illustrating a fifth operation of the stator magnet sticking apparatus according to the present invention.
(A) is a cross-sectional view, (b) is a partial developed view inside (a),
(C) is a partial plan view of (a). In (a), the pressing jig 30 is lowered from above the yoke 2. (B)
In the above, the elastic pressing piece 30c of the pressing jig 30 is inserted into the gap between the magnet material 5 and the guide piece 23, and the bending point 30
Using the d as a fulcrum, the upper mounting portion 30a is pushed laterally as shown by the arrow, and the magnet material 5 is moved along the inner peripheral surface 2a of the yoke 2 by the elastic pressing piece 30c as shown by the arrow. In (c), the upper mounting portion 30a of the pressing jig 30 is fitted to the upper portion 23a of the guide pieces 23. Left edge 5c of magnet material 5
Contact the left guide piece 23, so that the magnet materials 5 are positioned at a predetermined mounting angle in plan view.

FIGS. 12 (a) and 12 (b) are views for explaining the sixth operation of the stator magnet sticking apparatus according to the present invention.
3A, a third jig 5 to which second jigs 40 are attached.
0 into the yoke 2 as shown by the arrow, while the second jig 4
The magnet material 5 is pressed against the inner peripheral surface 2a of the yoke 2 as indicated by an arrow by the balls 43 of the reference numeral 0. For this reason, the magnet materials 5 are adhered to the inner peripheral surface 2a by the adhesive 7. However, since the adhesives 7 are not cured, the magnet material 5 can move. By extruding the magnet materials 5 to the outside of the diameter with the balls 43, the inner diameter between the magnet materials 5 is set within a specified range. When the step 53a hits the upper surface 2e of the yoke 2, the insertion of the upper plate 53 is completed. (B)
, The lever 65 is inserted into the notch groove 62 of the pull-up rod 63.
Pin 64 as shown by the arrow.

FIGS. 13 (a) and 13 (b) are views for explaining the seventh operation of the stator magnet sticking apparatus according to the present invention.
6A, the lever 65 is turned clockwise as indicated by an arrow with the pin 64 as a fulcrum, and the cam portion 6 of the lever 65 is rotated.
The lifting rod 63 is pulled up at 5a. At this time, the leaf springs 14 of the first jig 10 rise and push up the magnet materials 5. As a result, the upper surfaces 5b contact the lower plate 52. Thus, the position of the magnet material 5 with respect to the yoke 2 is determined. As described above, each jig 10, 20, 30, 4
0, 50, 60 can be set at the same time,
The positioning jig 20 and the pressing jig 30 define the mounting angle of the magnet materials 5... The second jig 40 extrudes the magnet materials 5. 5 are set within the specified range, and the fourth jig 6
0 to push up the magnetic material 5.
The magnet material 5 can be accurately attached to the position of the height H2 from the upper surface 2e of the yoke 2 by contacting the upper surface of.
In (b), the positioning jig 20 is pulled up and the yoke 2 is pulled up.
Remove from inside. Next, the adhesives 7 are heated (for example, at 150 ° C. for one hour) and thermally cured to attach the magnetic materials 5 to the inner peripheral surface 2 a of the yoke 2.

FIGS. 14A and 14B are views for explaining the eighth operation of the stator magnet sticking apparatus according to the present invention.
7A, the lever 65 is returned in the counterclockwise direction with the pin 64 as a fulcrum, and then the lifting lever 53 is removed from the lifting rod 63. The first jig 10 and the lifting rod 63 are lowered by the restoring force of the leaf springs 14 of the first jig 10. (B)
First, the second jig 40 and the third jig 50 are pulled out from the yoke 2. Next, the first jig 1 is placed on the bottom of the yoke 2.
0 to rotate the leaf springs 14 to the gap between the magnet materials 5 and 5, and in this state, the first jig 10 and the lifting rod 6
3 is taken out of the yoke 2, and the mounting process of the magnetic materials 5 is completed. After that, the magnet materials 5 are magnetized and
The stator shown in (a) and (b) is manufactured.

[0031]

According to the present invention, the following effects are exhibited by the above configuration. When the positioning jig of claim 1 is used, the magnet material is sufficiently separated from the inner peripheral surface of the yoke from the start of the operation to the positioning, so that the adhesive may touch or peel off the inner peripheral surface of the yoke. There is no. Therefore, the efficiency of the mounting operation of the magnet material can be improved.

Further , since the magnet material before magnetizing is stuck to the inner peripheral surface of the yoke, the magnet material can be stuck to the inner peripheral surface of the yoke without receiving the attractive force of the magnet. As a result, the magnet material can be easily and accurately applied to the predetermined application position.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an apparatus for attaching a magnet for a stator according to the present invention.

FIG. 2 is an enlarged view of a part of FIG. 1;

FIG. 3 is a plan view of a stator magnet sticking device according to the present invention.

FIG. 4 is a sectional view taken along line 4-4 in FIG. 3;

FIG. 5 is a sectional view taken along line 5-5 in FIG. 3;

6 is a view taken in the direction of arrow 6 in FIG. 5;

FIG. 7 is a first operation explanatory view of the stator magnet attaching apparatus according to the present invention;

FIG. 8 is an explanatory view of a second operation of the stator magnet sticking device according to the present invention.

FIG. 9 is a diagram illustrating a third operation of the stator magnet sticking device according to the present invention.

FIG. 10 is a fourth operation explanatory view of the stator magnet attaching apparatus according to the present invention.

FIG. 11 is an explanatory view of a fifth operation of the stator magnet attaching apparatus according to the present invention.

FIG. 12 is a sixth operation explanatory view of the magnet sticking device for a stator according to the present invention.

FIG. 13 is an explanatory view of a seventh operation of the stator magnet sticking device according to the present invention.

FIG. 14 is an explanatory view of an eighth operation of the stator magnet attaching apparatus according to the present invention.

FIG. 15 is a diagram showing a typical conventional stator.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Sticking apparatus of the magnet material for stators ... 2 ... Yoke, 2
a: inner peripheral surface, 5: magnet material, 5c, 5c: both sides (both edges), 7: adhesive, 20: positioning jig, 22: guide groove, 22d: slide surface, 23: guide piece.

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-9-56090 (JP, A) JP-A-9-131026 (JP, A) JP-A-9-107645 (JP, A) JP-A-2- 7860 (JP, A) Japanese Utility Model Showa 62-115761 (JP, U) Japanese Utility Model Showa 61-27478 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H02K 15/03 H02K 1 / 17

Claims (1)

(57) [Claims] The yoke inner circumferential surface of the 1. A motor stator, wearing
The magnet material of磁前 a positioning jig magnet material to use when pasting a predetermined interval, the jig is a magnetic material with a thermosetting adhesive, thermal hard
A guide groove for guiding the activatable adhesive obliquely from the center side of the yoke toward the inner peripheral surface in a state separated from the inner peripheral surface of the yoke, and a magnet material for defining a mounting angle of the magnet material approaching the inner peripheral surface. And a guide piece for guiding both sides of the magnet material.