JPH0391063U - - Google Patents

Description

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

第１図はこの考案にかかる同期電動機の１実施
例の模式図、第２図はその要部の平面図、第３図
はその全体の断面の模式図、第４図は従来の同期
電動機の１例の模式図、第５図はその要部の平面
図、第６図は同期電動機における角度θと使用電
圧範囲の関係を表すグラフ、第７図は同期電動機
の使用電圧範囲の温度特性を表すグラフ、第８図
はこの考案にかかる同期電動機の別の１実施例の
全体の断面の模式図、第９図ａは回転子の拡大断
面図、第９図ｂはそのＭ視図、第１０図ａは別の
回転子の拡大断面図、第１０図ｂはそのＮ視図、
第１１図はさらに別の回転子の拡大断面図である
。 １……固定子、２……回転子、１１……磁性体
板、１１ａ……固定子磁極片Ａ、１１ｂ……固定
子磁極片Ａ′、１２……磁性体板、１２ａ……固
定子磁極片Ｂ、１３……コイル、２２……回転子
マグネツト、ａ……固定子磁極片Ａ′の幅方向の
中心線の回転子の回転中心からのずれの寸法、ｔ
……固定子磁極片Ａと固定子磁極片Ａ′との隙間
。 Fig. 1 is a schematic diagram of one embodiment of the synchronous motor according to this invention, Fig. 2 is a plan view of its main parts, Fig. 3 is a schematic diagram of its entire cross section, and Fig. 4 is a diagram of a conventional synchronous motor. A schematic diagram of one example, Fig. 5 is a plan view of the main part, Fig. 6 is a graph showing the relationship between the angle θ and the working voltage range in a synchronous motor, and Fig. 7 shows the temperature characteristics of the working voltage range of the synchronous motor. 8 is a schematic cross-sectional view of another embodiment of the synchronous motor according to this invention, FIG. 9a is an enlarged sectional view of the rotor, and FIG. 9b is an M view thereof. Figure 10a is an enlarged sectional view of another rotor, Figure 10b is its N view,
FIG. 11 is an enlarged sectional view of yet another rotor. 1... Stator, 2... Rotor, 11... Magnetic plate, 11a... Stator magnetic pole piece A, 11b... Stator magnetic pole piece A', 12... Magnetic plate, 12a... Stator Magnetic pole piece B, 13...Coil, 22...Rotor magnet, a...Dimension of deviation of the center line in the width direction of stator magnetic pole piece A' from the rotation center of the rotor, t
...Gap between stator magnetic pole piece A and stator magnetic pole piece A'.

補正 平２．１０．６ 実用新案登録請求の範囲を次のように補正する
。Amendment October 6, 2002 The scope of claims for utility model registration is amended as follows.

【実用新案登録請求の範囲】 １ 外周面に周方向に沿つて着磁されたＮ極およ
びＳ極を交互に有する回転子、前記回転子の磁極
に対向する位置に前記回転子の磁極ピツチと同じ
ピツチで交互に配置される固定子磁極片Ａおよび
Ｂ、ならびに、前記回転子の磁極に対向するが磁
極ピツチから外れた位置に配置される固定子磁極
片Ａ′を備え、前記固定子磁極片ＡおよびＡ′と
固定子磁極片Ｂとがコイルの励磁により異なる極
性を持つようになつており、前記固定子磁極片Ａ
およびＡ′が、１枚の磁性体板において前記回転
子を取り出し可能とさせるための開口部となる部
分からの放射状の切り起こしにより形成されてい
る同期電動機において、前記固定子磁極片Ａは、
その幅方向の中心軸が前記回転子の回転中心を通
るが、前記固定子磁極片Ａ′は、その幅方向の中
心線が前記回転中心をはずれるように形成されて
いることを特徴とする同期電動機。２ 固定磁極片Ｂが１枚の磁性体板からの放射状
の切り起こしにより形成されており、同磁性体板
がコイルの巻回されたコイルボビン内に一部分窪
んでいて、この窪み部で回転子軸が固定されてい
る請求項１記載の同期電動機。 ３ 回転子が回転子軸に回転自在に支持されてい
て、回転子軸表面および／または回転子軸穴内表
面には、溝が形成されている請求項１または２記
載の同期電動機。 [Claims for Utility Model Registration] 1. A rotor having N poles and S poles alternately magnetized along the circumferential direction on the outer circumferential surface, and a magnetic pole pitch of the rotor at a position opposite to the magnetic poles of the rotor. stator pole pieces A and B arranged alternately at the same pitch, and a stator pole piece A' arranged opposite to the rotor poles but offset from the pole pitch; Pieces A and A' and stator magnetic pole piece B have different polarities due to excitation of the coil, and the stator magnetic pole piece A
In a synchronous motor in which A' and A' are formed by radial cutting and raising from a portion of one magnetic plate that becomes an opening for allowing the rotor to be taken out, the stator magnetic pole piece A is
The center axis in the width direction passes through the rotation center of the rotor, and the stator magnetic pole piece A' is formed such that the center line in the width direction deviates from the rotation center. Electric motor. The two fixed magnetic pole pieces B are formed by radially cutting and bending a single magnetic plate, and the magnetic plate is partially recessed in the coil bobbin around which the coil is wound, and the rotor shaft is connected to the rotor shaft in this recess. The synchronous motor according to claim 1, wherein: is fixed. 3. The synchronous motor according to claim 1, wherein the three rotors are rotatably supported by the rotor shaft, and grooves are formed on the rotor shaft surface and/or the inner surface of the rotor shaft hole.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 外周面に周方向に沿つて着磁されたＮ極および
Ｓ極を交互に有する回転子、前記回転子の磁極に
対向する位置に前記回転子の磁極ピツチと同じピ
ツチで交互に配置される固定子磁極片ＡおよびＢ
、ならびに、前記回転子の磁極に対向するが磁極
ピツチから外れた位置に配置される固定子磁極片
Ａ′を備え、前記固定子磁極片ＡおよびＡ′と固
定子磁極片Ｂとがコイルの励磁により異なる極性
を持つようになつており、前記固定子磁極片Ａお
よびＡ′が、１枚の磁性体板において前記回転子
を取り出し可能とさせるための開口部となる部分
からの放射状の切り起こしにより形成されている
同期電動機において、前記固定子磁極片Ａは、そ
の幅方向の中心線が前記回転子の回転中心を通る
が、前記固定子磁極片Ａ′は、その幅方向の中心
線が前記回転中心をはずれるように形成されてい
ることを特徴とする同期電動機。 A rotor having N poles and S poles alternately magnetized along the circumferential direction on the outer circumferential surface, and fixings arranged alternately at positions facing the magnetic poles of the rotor at the same pitch as the magnetic pole pitch of the rotor. Child pole pieces A and B
, and a stator pole piece A' opposed to the rotor poles but disposed at a position offset from the pole pitch, wherein the stator pole pieces A and A' and the stator pole piece B are in contact with the coils. The stator magnetic pole pieces A and A' have different polarities due to excitation, and the stator magnetic pole pieces A and A' are formed by radial cuts from a portion of one magnetic plate that becomes an opening for allowing the rotor to be taken out. In a synchronous motor formed by bending, the center line of the stator magnetic pole piece A in the width direction passes through the rotation center of the rotor, but the center line of the stator magnetic pole piece A' in the width direction passes through the center line of the rotor. A synchronous motor, characterized in that the motor is formed so as to be deviated from the center of rotation.