JPS6390970U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は、本考案に係る円筒型フアンモータの
ケーシング部分の断面図、第２図は、第１図に示
したモータの界磁磁極の斜視図、第３図は、一般
的な円筒型直流モータの概略構成図、第４図は、
第２図に示したモータの界磁磁極の斜視図である
。 ２…電機子、４…界磁磁極、５…ケーシング、
１２…回転軸。 Fig. 1 is a cross-sectional view of the casing portion of the cylindrical fan motor according to the present invention, Fig. 2 is a perspective view of the field magnetic poles of the motor shown in Fig. 1, and Fig. 3 is a general cylindrical fan motor. The schematic configuration diagram of the DC motor, Figure 4, is
FIG. 3 is a perspective view of the field magnetic poles of the motor shown in FIG. 2; 2... Armature, 4... Field magnetic pole, 5... Casing,
12...Rotation axis.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 異極の界磁磁極４をケーシング５内に対向配置
し、当該界磁磁極４に所定の間隙を介して回転す
る電機子２を回転軸１２に拘持し、当該回転軸１
２にフアンを直接取付けた円筒型フアンモータに
おいて、前記界磁磁極４の形状を、その一端の円
周方向長を基準として、その円周方向長が軸方向
各位置において逐次増大するように形成し、当該
電機子２に回転軸方向力を生じさせて当該フアン
の回転により発生するスラスト力を打消すように
したことを特徴とする円筒型フアンモータ。 Field magnetic poles 4 of different polarities are arranged opposite to each other in a casing 5, and a rotating armature 2 is held on a rotating shaft 12 through a predetermined gap between the field magnetic poles 4.
In the cylindrical fan motor in which a fan is directly attached to the cylindrical fan motor 2, the shape of the field magnetic pole 4 is formed such that the circumferential length of the field magnetic pole 4 increases successively at each position in the axial direction, with the circumferential length of one end thereof as a reference. A cylindrical fan motor characterized in that the armature 2 generates a force in the rotation axis direction to cancel the thrust force generated by the rotation of the fan.