JP2598386Y2 - Reluctance motor rotor - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reluctance motor, and more particularly to a reluctance servomotor used as an actuator for driving nuclear equipment and space equipment.

[0002]

2. Description of the Related Art Conventionally, the rotor of a reluctance motor has
By laminating silicon steel sheets in parallel with the rotation axis, the laminate is formed in an L-shape, and a plurality of laminates are arranged around the rotation axis and the end of the laminate together with the end of the adjacent laminate, A salient pole is formed by both ends. In order to prevent this laminate from being deformed by motor torque, between the laminate and the rotating shaft and by welding the salient poles of the laminate integrally,
A structure in which a laminate is wound with a non-conductive material or bonded with a resin or the like when laminating silicon steel plates is disclosed (for example, Japanese Patent Application Laid-Open No. 3-155347).

[0003]

However, the above structure has a problem that the insulation of the silicon steel sheet is destroyed by welding heat at the welded portion of the laminate, and eddy current loss occurs. In addition, there is a problem in that the method of winding with a non-conductive material or the method of bonding silicon steel plates with a resin to form a laminated body has insufficient strength, requires a complicated manufacturing process, and requires many steps. SUMMARY OF THE INVENTION An object of the present invention is to provide a rotor of a reluctance motor which can be easily manufactured without causing eddy current loss and maintaining sufficient strength.

[0004]

According to the present invention, a silicon steel plate is made of L
A plurality of laminates molded and laminated in a letter shape are arranged around the rotation axis so that the lamination direction is perpendicular to the rotation axis,
In a rotor of a reluctance motor having a rotor core in which a plurality of salient poles are formed by contacting both ends of the laminated body side by side , fixing both end faces of the rotor core
A boss portion having both fitting hole in which the fitted on the rotary shaft for fixing a projecting portion extending radially from said boss, said provided in each protrusion, and the Nde clamping the both side surfaces of each salient pole
And a holder made of a non-conductive or non-magnetic material or a non-magnetic material having a claw portion to be fixed . Ma
Further, the non-conductive material may be a reinforced plastic.
And the non-magnetic material is aluminum or aluminum.
Alloy, and the outer diameter of the protrusion is the convex pole of the rotor core.
May be slightly shorter than the outer diameter of the.

[0005]

According to the present invention, holders having protrusions radially extending from a boss and claws provided on the respective protrusions are provided on both end surfaces of the rotor core, and the claws are used to machine the side surfaces of each convex pole of the rotor core. So that the laminate constituting the rotor core is not deformed by the motor torque,
There is no dielectric breakdown of the silicon steel sheet due to welding heat as in the related art.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
FIG. 1 is a front view showing an embodiment of the present invention, and FIG. 2 is a side view thereof, a part of which is shown in cross section. The rotor core 1 is formed by arranging four laminated bodies 11 formed by laminating and forming silicon steel plates into an L shape around the rotating shaft 2 so that the laminating direction is perpendicular to the rotating shaft 2. Four salient poles 12 extending in the radial direction are formed by bringing both ends into contact with each other. As shown in FIG. 3, the boss 32 having a fitting hole 31 to be fitted to the rotating shaft 2 and the same number of convex poles 12 extending from the boss 32 in the radial direction are provided on both end surfaces of the rotor core 1. A projection 33,
A holder 3 made of a non-conductive material such as a reinforced plastic or a non-magnetic material such as aluminum or an aluminum alloy is provided with a claw portion 34 provided at each protrusion 33 at the same interval as the width of the convex pole 12. It is provided. Note that the holder 3
If is a non-magnetic material of metal, as the eddy current loss is not generated, it keeps slightly shorter than the outer diameter of the salient poles 12 to the outer diameter of the protrusion 33. The boss 32 of the holder 3 fits into the fitting hole 31.
Interpolation key 21 into the key groove provided provided keyway with the rotary shaft 2
It has entered and stopped. Further, the rotor core 1 is fixed to the rotating shaft 2 by fixing the holder 3 to the rotor core 1 by the nut 4 and by holding both sides of the salient pole 12 by the claw portions 34. doing. Although the above description has been given of a rotor having four poles, it is obvious that the present invention can be applied regardless of the number of poles.

[0007]

As described above, according to the present invention, since the rotor core is held by the holder that mechanically holds the salient poles of the rotor core, the rotor core is fixed to the rotating shaft. Dielectric breakdown of the silicon steel sheet due to heat or the like is eliminated, and eddy current loss is not generated. Further, since the structure of the holder is simple, sufficient strength can be maintained, and there is an effect that a rotor of a reluctance motor of high quality and easy to manufacture can be provided.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a side view showing the embodiment of the present invention.

FIG. 3 is a perspective view showing the holder according to the embodiment of the present invention;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rotor iron core 11 Laminated body 12 Convex pole 2 Rotating shaft 21 Key 3 Holder 31 Fitting hole 32 Boss part 33 Projection part 34 Claw part 4 Nut

Claims (4)

(57) [Scope of request for utility model registration] 1. A plurality of laminates formed by laminating silicon steel sheets in an L-shape and arranging them around the rotation axis so that the lamination direction is perpendicular to the rotation axis. in the rotor of the reluctance motor having a side by side to be contacted rotor core to form a plurality of salient, fitted to the rotating shaft is fixed to both end surfaces of the rotor core
Non having a boss portion having a fitting hole for fixing, a protrusion extending radially from said boss, and said provided the protrusions, and the claw portion for fixing Nde clamping the both side surfaces of each salient pole A rotor for a reluctance motor, comprising a holder made of a conductive material or a non-magnetic material. 2. The non-conductive material is a reinforced plastic.
A rotor for a reluctance motor according to claim 1. 3. The non-magnetic material is made of aluminum or aluminum.
The reluctance smoke according to claim 1, which is a ruminium alloy.
Rotor. 4. The outer diameter of the projection is equal to the diameter of the rotor core.
4. The refill according to claim 3, wherein the dimension is slightly shorter than the outer diameter of the salient pole.
Lactance motor rotor.