JPH03111173U

JPH03111173U -

Info

Publication number: JPH03111173U
Application number: JP2012090U
Authority: JP
Priority date: 1990-02-28
Filing date: 1990-02-28
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及び配設位
置の説明図、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
……従来の多極多相形の片面励磁構造の可動マグ
ネツト型リニア直流ラシレスモータ、ＬＤＭ−３
……本考案の多極多相形の両面励磁形可動電機子
型リニア直流ブラシレスモータ、１……ステータ
ベース、２−１，２−２……走行ヨーク、２−１
Ａ，２−２Ｃ……一方の端部、２−１Ｂ，２−２
Ｄ……他方の端部、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……可動側コアレス電機子、７，
７−１，７−２……固定側界磁マグネツト、８…
…固定子、９……移動子、１０……走行体、１０
ａ……側壁、１０ｂ……透孔、１０ｃ……上面、
１０ｃ′……下面、１０ｄ……螺子孔、１０ｅ，
１０ｅ′……延長部、１０ｆ……段部、１０ｇ…
…ガイドローラ収納用切欠、１１……止子、１１
ａ……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、２
０……固定基台、２１……移動子、２２，２２Ａ
，２２Ｂ，２２Ｃ，２２Ｄ……コギングトルクリ
ツプル波形、２３Ａ，２３Ｂ……電磁推力リツプ
ル波形。 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, 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 and installation position 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, and Fig. 7 is an explanatory diagram of the same moving armature type linear DC brushless motor. An explanatory diagram of the cogging torque generated by a brushless motor,
Figure 8 is a plan view of a conventional multi-pole, multi-phase, single-sided excitation structure moving armature linear DC brushless motor;
Fig. 9 is a side view of the moving armature type linear DC brushless motor, Fig. 10 is a longitudinal sectional view of the same moving armature type linear DC brushless motor as seen from the moving direction of the moving element, and Figs. 11 to 16. The figure is an explanatory diagram of the generation of large cogging torque in a conventional moving armature type 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 Laserless motor, LDM-3
...Multi-pole, polyphase double-sided excitation type movable armature linear DC brushless motor of the present invention, 1... Stator base, 2-1, 2-2... Traveling yoke, 2-1
A, 2-2C...One end, 2-1B, 2-2
D...Other end, 3-1, 3-2...Printed wiring board, 4-1, 4-2...Linear guide projection, 5...Armature coil, 5a, 5b...Generation of thrust effective conductor portions contributing to the generation of thrust, 5c, 5d...conductor portions perpendicular to the conductor portions contributing to the generation of thrust, 6;
6-1, 6-2...Movable side coreless armature, 7,
7-1, 7-2...Fixed side field magnet, 8...
... Stator, 9... Mover, 10... Running body, 10
a...Side wall, 10b...Through hole, 10c...Top surface,
10c'...lower surface, 10d...screw hole, 10e,
10e'...extension part, 10f...stepped part, 10g...
...Guide roller storage notch, 11...Stopper, 11
a... Head, 12... Engaging groove, 13... Guide roller, 14... Stator yoke, 15... Printed wiring board, 16... Magnetic pole discrimination element, 17, 17
', 17''...Traveling yoke, 17a...Extended bent portion, 18...Guide roller, 19...Stator, 2
0... Fixed base, 21... Mover, 22, 22A
, 22B, 22C, 22D... Cogging torque ripple waveform, 23A, 23B... Electromagnetic thrust ripple 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 movable coreless armature is formed by disposing coreless armatures with a phase shift of about half the magnetic pole width from each other on the traveling yoke of the mover facing each side of the side field magnet, and the two movable coreless armatures The armatures are arranged with a phase shift of approximately half a magnetic pole width from each other along the moving direction of the mover, and the traveling yoke on which the movable side coreless armature is arranged is located at one end in the moving direction of the mover. When the other end faces substantially the boundary between the north pole or the south pole of the fixed field magnet, the other end is set to a length such that it faces substantially the center of the north pole or south pole of the fixed field magnet. The movable armature type having a double-sided excitation structure is characterized in that the two traveling yokes disposed on both sides are disposed with a phase shift of approximately one-fourth of the magnetic pole width from each other in the traveling direction of the movable element. Linear DC motor.