JPS62202072U

JPS62202072U -

Info

Publication number: JPS62202072U
Application number: JP9117786U
Authority: JP
Priority date: 1986-06-13
Filing date: 1986-06-13
Publication date: 1987-12-23

Description

[Brief explanation of the drawing]

第１図は従来のリニア直流モータの平面図、第
２図は同リニア直流モータの側縦断面図、第３図
は従来公知のボイスコイル型リニア直流モータの
平面図、第４図は同ボイスコイル型リニア直流モ
ータの側縦断面図、第５図は本考案第１実施例の
リニア直流モータの平面図、第６図は同リニア直
流モータの側縦断面図、第７図は同リニア直流モ
ータの磁気エンコーダを形成する部分を説明する
為の磁気エンコーダ磁極部を有する永久磁石と磁
気センサを配設したプリント基板に配設された電
機子コイルの分解斜視図、第８図は本考案第２実
施例のリニア直流モータの平面図、第９図は同リ
ニア直流モータの側縦断面図、第１０図は同リニ
ア直流モータに用いる磁気エンコーダの形成方法
の説明図、第１１図は他の磁気エンコーダの形成
方法の説明図である。〔符号の説明〕、１，１′，１″，１……リ
ニア直流モータ、２―１，２―２，２′―１，２
′―２……ステータヨーク、３……空隙、３ａ―
１，３ａ―２，３ｂ―１，３ｂ―２……サイドヨ
ーク部、４ａ―１，４ａ―２，４ｂ―１，４ｂ―
２……永久磁石、５―１，５―２……プリント基
板、６……電機子コイル、７……センターヨーク
、８，９……空隙、１０―１，１０―２……サイ
ドヨーク、１１―１，１１―２……永久磁石、１
２……電機子コイル、１３……プリント基板、１
４―１，１４―２……ステータヨーク、１５……
空隙、１６―１，１６―２，１７―１，１７―２
……ステータヨーク、１８―１，１８―２……セ
ンタヨーク、１９―１，１９―２，２０―１，２
０―２……永久磁石、１９―１ａ……側面、２１
……電機子コイル、２１ａ，２１ｂ……推力に寄
与する有効導体部、２１ｃ，２１ｄ……推力に寄
与しない導体部、２２―１，２２―２……プリン
ト基板、２３，２３′，２３″……磁気エンコー
ダ磁極部、２３ａ，２３ａ′，２３ａ″……Ｎ極
、２３ｂ，２３ｂ′，２３ｂ″……Ｓ極、２４…
…磁気センサ、２５……磁気エンコーダ、２６…
…電気回路構成部品、２７，２７′……磁気エン
コーダ磁極部形成用マグネツトシート、２８……
ヨーク。 Fig. 1 is a plan view of a conventional linear DC motor, Fig. 2 is a side vertical sectional view of the same linear DC motor, Fig. 3 is a plan view of a conventionally known voice coil type linear DC motor, and Fig. 4 is the same voice coil type linear DC motor. 5 is a plan view of the linear DC motor according to the first embodiment of the present invention; FIG. 6 is a side vertical sectional view of the linear DC motor; and FIG. FIG. 8 is an exploded perspective view of an armature coil disposed on a printed circuit board on which a permanent magnet having a magnetic encoder magnetic pole part and a magnetic sensor are disposed to explain the part forming the magnetic encoder of the motor. FIG. 9 is a side vertical sectional view of the linear DC motor of the second embodiment, FIG. 10 is an explanatory diagram of a method of forming a magnetic encoder used in the linear DC motor, and FIG. 11 is a plan view of another linear DC motor. FIG. 3 is an explanatory diagram of a method of forming a magnetic encoder. [Explanation of symbols], 1, 1', 1'', 1...Linear DC motor, 2-1, 2-2, 2'-1, 2
'-2...Stator yoke, 3...Gap, 3a-
1, 3a-2, 3b-1, 3b-2...Side yoke part, 4a-1, 4a-2, 4b-1, 4b-
2... Permanent magnet, 5-1, 5-2... Printed circuit board, 6... Armature coil, 7... Center yoke, 8, 9... Air gap, 10-1, 10-2... Side yoke, 11-1, 11-2...Permanent magnet, 1
2... Armature coil, 13... Printed circuit board, 1
4-1, 14-2...Stator yoke, 15...
Void, 16-1, 16-2, 17-1, 17-2
... Stator yoke, 18-1, 18-2 ... Center yoke, 19-1, 19-2, 20-1, 2
0-2... Permanent magnet, 19-1a... Side, 21
...Armature coil, 21a, 21b...Effective conductor portion contributing to thrust, 21c, 21d...Conductor portion not contributing to thrust, 22-1, 22-2...Printed circuit board, 23, 23', 23'' ...Magnetic encoder magnetic pole part, 23a, 23a', 23a''...N pole, 23b, 23b', 23b''...S pole, 24...
...Magnetic sensor, 25...Magnetic encoder, 26...
...Electric circuit components, 27, 27'...Magnetic sheet for forming magnetic encoder magnetic poles, 28...
yoke.

Claims

[Claims for Utility Model Registration] (1) At least one of two stator yokes arranged in parallel with a gap in between has an N
A permanent magnet with a pole and a permanent magnet with an S pole are arranged at appropriate intervals along the moving direction of the mover, and N and S magnetic poles are attached to at least one of the permanent magnets in the moving direction of the mover. Magnetic encoder magnetic pole parts are formed with multi-pole magnetization alternately at a fine pitch along the substrate, and the permanent magnets are arranged on the substrate in the gap formed by one stator yoke and the other stator yoke. A magnetic sensor for detecting the amount of displacement of the armature coil is disposed on the board at a position where it can detect the magnetic pole part of the magnetic encoder, and the two permanent A center yoke part is provided that connects the two stator yokes at the magnet position and passes through the cavity of the armature coil, and side yoke parts are provided at both ends of the two stator yokes to close the magnetic path. Linear DC motor. (2) The linear DC motor according to claim 1, wherein the center yoke is a member that regulates the amount of movement of the armature coil. (3) The above-mentioned linear DC motor is a utility model in which a permanent magnet having a polarity opposite to that of the above-mentioned permanent magnet is provided on the other stator yoke surface that faces the permanent magnet provided on the above-mentioned stator yoke via an air gap. A linear DC motor according to registered claim 1 or 2. (4) The above-mentioned magnetic encoder magnetic pole part is formed by multipole magnetizing N and S magnetic poles alternately at fine pitches along the moving direction of the mover on the side surface of a permanent magnet. A linear DC motor according to claim (1) of patent registration. (5) The above-mentioned magnetic encoder magnetic pole part is formed by pasting a sheet-like magnet in which N and S magnetic poles are alternately magnetized along the longitudinal direction to the side surface of a permanent magnet. Scope of patent registration request No.
Linear DC motor described in (1).