JPH0435680U

JPH0435680U -

Info

Publication number: JPH0435680U
Application number: JP7832390U
Authority: JP
Priority date: 1990-07-24
Filing date: 1990-07-24
Publication date: 1992-03-25

Description

[Brief explanation of the drawing]

第１図は本考案の第１実施例に係るモータの断
面図、第２図は第１実施例のステータ組立品の一
部切欠斜視図、第３図は外ヨークの他の実施例の
斜視図、第４図は同じく外ヨークの他の実施例の
展開図、第５図Ａは外ヨークを用いないタイプの
実施例の内ヨークの断面図、同図Ｂはその磁極歯
列の展開図、第６図Ａは第１図のモータにおける
端子部１４の構成の拡大平面図、同図Ｂは同拡大
縦断面図である。１……カツプ状ケース、２……ロータ磁石、３
……ロータ軸、５……内ヨーク、５ａ……フラン
ジ、５ｂ……スリツト、６……外ヨーク、７……
半割ボビン、８……コイル、９……軸受、１０…
…ベースプレート、１１……ネジ、１２……コイ
ル線端、１３……配線パターン、１３ａ，１３ｂ
……ランド部、１４……端子部、１５……止め輪
、１６……平座金、１７……バネ座金。 Fig. 1 is a sectional view of a motor according to a first embodiment of the present invention, Fig. 2 is a partially cutaway perspective view of a stator assembly of the first embodiment, and Fig. 3 is a perspective view of another embodiment of the outer yoke. Figure 4 is a developed view of another embodiment of the outer yoke, Figure 5A is a sectional view of the inner yoke of an embodiment that does not use an outer yoke, and Figure B is a developed view of its magnetic pole tooth row. 6A is an enlarged plan view of the structure of the terminal portion 14 in the motor shown in FIG. 1, and FIG. 6B is an enlarged longitudinal cross-sectional view of the same. 1...Cup-shaped case, 2...Rotor magnet, 3
...Rotor shaft, 5...Inner yoke, 5a...Flange, 5b...Slit, 6...Outer yoke, 7...
Half bobbin, 8... Coil, 9... Bearing, 10...
... Base plate, 11 ... Screw, 12 ... Coil wire end, 13 ... Wiring pattern, 13a, 13b
...Land portion, 14...Terminal portion, 15...Retaining ring, 16...Flat washer, 17...Spring washer.

Claims

[Claims for Utility Model Registration] (1) An inner yoke made of a magnetic material that integrally has a plurality of flanges on the outer periphery of the central cylindrical portion, a coil wound between the flanges of the inner yoke, and a coil disposed intermittently in the shape of a broken line. The outer yoke is made of a ring-shaped magnetic material having a magnetic pole tooth row formed by a slit, and the outer yoke is tightly fitted to the outer periphery of the flange of the inner yoke, and the bearing is installed in the center hole of the inner yoke. A rotor shaft rotatably supported through the rotor shaft, a cup-shaped case fixed to the rotor shaft, and a ring-shaped rotor magnet fixed to the inner peripheral surface of the case and arranged around the outer periphery of the magnetic pole tooth row. Outer rotor type stepping motor with (2) The outer rotor type stepping motor according to claim 1, wherein a magnetic pole tooth row is integrally formed on the outer periphery of the flange of the inner yoke without using the outer yoke. stepping motor. (3) In the outer rotor type stepping motor according to claim 1 or 2, a base plate is fixed to one end of the inner yoke, and a printed wiring board for external wiring of the coil is integrally formed in a part of the base plate. An outer rotor type stepping motor characterized by: