JPH0428777U

JPH0428777U -

Info

Publication number: JPH0428777U
Application number: JP6772290U
Authority: JP
Priority date: 1990-06-26
Filing date: 1990-06-26
Publication date: 1992-03-06

Description

[Brief explanation of the drawing]

第１図、第２図は本考案第１実施例の第１組立
工程を示す分解斜視図及び要部側断面図、第３図
、第４図は本考案第１実施例の第２組立工程を示
す分解斜視図及び要部側斜視図、第５図は本考案
の第２実施例を示す分解斜視図、第６図は従来の
構成例を示す分解斜視図、第７図はその組立側断
面図である。２１，３０……外ヨーク、２１ａ，３０ａ……
中央貫通孔、２１ｂ，３０ｂ……極歯、２１ｃ，
３０ｃ……切欠溝、２２，２７……駆動コイル、
２３，２８……コイルボビン、２３ａ，２８ａ…
…突起、２４，２９……コイル、２５，２６……
内ヨーク、２５ａ，２６ａ……中央貫通孔、２５
ｂ，２６ｂ……極歯、２５ｃ，２６ｃ……基準孔
、２５ｄ，２６ｄ……基準孔、２１ｄ，３０ｄ…
…基準孔、３１……フランジ、３１ａ，３４ａ…
…基準孔、３２，３５……軸受、３４……取付板
、３６……芯金、３６ａ……ピン、３７……受穴
、３８，４０……軸受受穴。 Figures 1 and 2 are exploded perspective views and side sectional views of essential parts showing the first assembly process of the first embodiment of the present invention, and Figures 3 and 4 are the second assembly process of the first embodiment of the present invention. Fig. 5 is an exploded perspective view showing the second embodiment of the present invention, Fig. 6 is an exploded perspective view showing a conventional configuration example, and Fig. 7 is an assembly side thereof. FIG. 21, 30...outer yoke, 21a, 30a...
Central through hole, 21b, 30b...pole tooth, 21c,
30c... Notch groove, 22, 27... Drive coil,
23, 28... Coil bobbin, 23a, 28a...
...Protrusion, 24, 29... Coil, 25, 26...
Inner yoke, 25a, 26a...Central through hole, 25
b, 26b...Pole tooth, 25c, 26c...Reference hole, 25d, 26d...Reference hole, 21d, 30d...
...Reference hole, 31...Flange, 31a, 34a...
... Reference hole, 32, 35 ... Bearing, 34 ... Mounting plate, 36 ... Core metal, 36a ... Pin, 37 ... Receiving hole, 38, 40 ... Bearing receiving hole.

Claims

[Scope of Claim for Utility Model Registration] 1. A pair of upper and lower cylindrical outer yokes facing each other, each having a cutout groove for a coil terminal in its opening and a plurality of pole teeth protruding from the inner periphery of a central through hole; a pair of annular inner yokes arranged back to back to each other and having a plurality of pole teeth arranged alternately on the inner periphery of the central through hole, protruding in directions opposite to the inner yokes; a pair of drive coils each having a coil wound around a coil bobbin, and a flange and a mounting plate respectively fixed to the outside of the outer yokes, each of the poles of the pair of outer yokes being rotatably supported; a protruding engagement portion provided opposite to the upper and lower ribs of the coil bobbin of the drive coil, comprising teeth and a rotor formed of a multi-polar magnet that is fitted into the central through hole of the drive coil; The outer yoke and the inner yoke are fixed and assembled by engaging a pair of opposing engaged parts provided on the yoke and inserting a core metal into the inner periphery of the pole teeth of the yoke. Characteristic pulse motor assembly structure. 2. The pulse motor assembly structure according to claim 1, wherein the pair of engaged parts provided on the outer yoke and the inner yoke are round holes and oval holes extending in the radial direction. 3. The pulse motor assembly structure according to claim 1, wherein the pair of engaged parts provided on the outer yoke and the inner yoke are oval holes in the radial direction.