JPH03111170U

JPH03111170U -

Info

Publication number: JPH03111170U
Application number: JP1698690U
Authority: JP
Priority date: 1990-02-22
Filing date: 1990-02-22
Publication date: 1991-11-14

Description

[Brief explanation of drawings]

第１図は本考案の一実施例を示す多極多相型の
両面励磁構造の可動電機子型リニア直流ブラシレ
スモータをその移動子の走行方向から見た縦断面
図、第２図は同可動電機子型リニア直流ブラシレ
スモータの平面図、第３図は同可動電機子型リニ
ア直流ブラシレスモータの側面図、第４図は同可
動電機子型リニア直流ブラシレスモータの部分分
解斜視図、第５図は走行ヨークの長さの説明図、
第６図は同可動電機子型リニア直流ブラシレスモ
ータに用いた固定側界磁マグネツトの説明図、第
７図は同可動電機子型リニア直流ブラシレスモー
タの発生コギングトルクの説明図、第８図は従来
の多極多相型の片面励磁構造の可動電機子型リニ
ア直流ブラシレスモータの平面図、第９図は同可
動電機子型リニア直流ブラシレスモータの側面図
、第１０図は同可動電機子型リニア直流ブラシレ
スモータをその移動子の走行方向から見た縦断面
図、第１１図乃至第１６図は従来の可動電機子型
リニア直流ブラシレスモータにおいて大きなコギ
ングトルクが発生することの説明図である。符号の説明、ＬＤＭ，ＬＤＭ−１，ＬＤＭ−２
……従来の多極多相型の片面励磁構造の可動マグ
ネツト型リニア直流ブラシレスモータ、ＬＤＭ−
３……本考案の多極多相型の両面励磁構造の可動
電機子型リニア直流ブラシレスモータ、１……ス
テータベース、３−１，３−２……プリント配線
基板、４−１，４−２……リニアガイド用突起、
５……電機子コイル、５ａ，５ｂ……推力の発生
に寄与する有効導体部、５ｃ，５ｄ……推力の発
生に寄与する導体部と直交する導体部、６，６−
１，６−２……可動コアレス電機子、７，７−１
，７−２……固定側界磁マグネツト、８……固定
子、９……移動子、１０……走行ヨーク、１０ａ
……側壁、１０ｂ……透孔、１０ｃ……上面、１
０ｃ′……下面、１０ｄ……螺子孔、１０ｅ，１
０ｅ′……延長部、１０ｆ……段部、１０ｇ……
ガイドローラ収納用切欠、１１……止子、１１ａ
……頭部、１２……係合溝、１３……ガイドロー
ラ、１４……ステータヨーク、１５……プリント
配線基板、１６……磁極判別素子、１７，１７′
，１７″……走行ヨーク、１７ａ……延長折曲部
、１８……ガイドローラ、１９……固定子、２０
……固定基台、２１……移動子、２２，２２Ａ，
２２Ｂ……コギングトルク波形。 Fig. 1 is a vertical cross-sectional view of a movable armature linear DC brushless motor with a multi-pole, multi-phase, double-sided excitation structure, showing an embodiment of the present invention, as viewed from the moving direction of its mover. A plan view of the armature type linear DC brushless motor, Fig. 3 is a side view of the same moving armature type linear DC brushless motor, Fig. 4 is a partially exploded perspective view of the same moving armature type linear DC brushless motor, and Fig. 5 is an explanatory diagram of the length of the traveling yoke,
Fig. 6 is an explanatory diagram of the fixed side field magnet used in the same moving armature type linear DC brushless motor, Fig. 7 is an explanatory diagram of the cogging torque generated in the same moving armature type linear DC brushless motor, and Fig. 8 is an explanatory diagram of the cogging torque generated in the same moving armature type linear DC brushless motor. A plan view of a conventional moving armature linear DC brushless motor with a multi-pole multiphase single-sided excitation structure, Fig. 9 is a side view of the same moving armature type linear DC brushless motor, and Fig. 10 is a side view of the same moving armature type linear DC brushless motor. FIGS. 11 to 16, which are vertical cross-sectional views of a linear DC brushless motor viewed from the running direction of its moving element, are explanatory views of the generation of large cogging torque in a conventional moving armature linear DC brushless motor. Explanation of codes, LDM, LDM-1, LDM-2
...Conventional multi-pole multi-phase single-sided excitation structure moving magnet type linear DC brushless motor, LDM-
3...Movable armature type linear DC brushless motor with multi-pole, multi-phase double-sided excitation structure of the present invention, 1...Stator base, 3-1, 3-2...Printed wiring board, 4-1, 4- 2...Protrusion for linear guide,
5... Armature coil, 5a, 5b... Effective conductor part that contributes to the generation of thrust, 5c, 5d... Conductor part perpendicular to the conductor part that contributes to the generation of thrust, 6, 6-
1,6-2...Movable coreless armature, 7,7-1
, 7-2... Fixed side field magnet, 8... Stator, 9... Mover, 10... Traveling yoke, 10a
...Side wall, 10b...Through hole, 10c...Top surface, 1
0c'...Bottom surface, 10d...Screw hole, 10e, 1
0e'...extension part, 10f...stepped part, 10g...
Guide roller storage notch, 11...stop, 11a
... Head, 12 ... Engagement groove, 13 ... Guide roller, 14 ... Stator yoke, 15 ... Printed wiring board, 16 ... Magnetic pole discrimination element, 17, 17'
, 17″... Traveling yoke, 17a... Extension bending portion, 18... Guide roller, 19... Stator, 20
... Fixed base, 21 ... Mover, 22, 22A,
22B...Cogging torque waveform.

Claims

[Scope of utility model registration request]

A stationary side field magnet is formed by having P (P is an integer of 2 or more) magnetic poles of N and S poles so that magnetic poles arranged adjacent to each other along the moving direction of the mover have different polarities. A coreless armature is disposed on the traveling yoke of the mover facing the side field magnet to form a movable side coreless armature, and the traveling yoke on which the movable side coreless armature is disposed is disposed on one side in the moving direction of the mover. The end of the fixed side field magnet is N
A movable armature characterized in that when facing a substantially boundary between a pole and a south pole, the other end is set to a length such that it faces substantially the center of the north or south pole of the fixed side field magnet. Type linear DC motor.