JPS63202175U

JPS63202175U -

Info

Publication number: JPS63202175U
Application number: JP9083087U
Authority: JP
Priority date: 1987-06-15
Filing date: 1987-06-15
Publication date: 1988-12-27

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例によるＤＣリニアモ
ータの構造を示す斜視図、第２図は駆動コイルに
流れる電流と漏れ磁束との関係を示す図、第３図
は従来のＤＣリニアモータの構造を示す斜視図で
ある。１……ＤＣリニアモータ部、２……バツクヨー
ク、３……センターヨーク、４……永久磁石、５
……駆動コイル、６……摺動軸、７……キヤリツ
ジ、８……磁気抵抗素子、９……取り付け台、１
０……基板、１１，１２……磁気ヨーク。 Figure 1 is a perspective view showing the structure of a DC linear motor according to an embodiment of the present invention, Figure 2 is a diagram showing the relationship between the current flowing through the drive coil and leakage magnetic flux, and Figure 3 is a diagram showing the structure of a conventional DC linear motor. FIG. 3 is a perspective view showing the structure. 1...DC linear motor section, 2...Back yoke, 3...Center yoke, 4...Permanent magnet, 5
... Drive coil, 6 ... Sliding shaft, 7 ... Carriage, 8 ... Magnetoresistive element, 9 ... Mounting stand, 1
0...Substrate, 11, 12...Magnetic yoke.

Claims

[Claims for Utility Model Registration] 1. A permanent magnet magnetized in a predetermined direction is installed in a first yoke, and a second yoke is arranged to face the permanent magnet, and the The opening of the magnetic circuit formed by the first and second yokes and the permanent magnet includes a DC linear motor section in which a drive coil is disposed so as to be movable in a direction perpendicular to a predetermined direction. A carriage that moves with the movement of the drive coil is arranged to extend, and is provided with a magnetic scale for detecting the moving position of the carriage, and at least a part of the opening on the carriage side has a third A DC linear motor characterized by an additional yoke. 2 Utility Model Registration In claim 1, the magnetic scale comprises a bar-shaped magnetic body with N and S poles alternately magnetized at predetermined intervals, and a magnetoresistive element disposed on the carriage. A DC linear motor comprising: 3. Utility Model Registration Claim 2. The DC linear motor according to claim 2, wherein the rod is used as a sliding shaft that supports the carriage and regulates the movement of the carriage.