JPS62152674U

JPS62152674U -

Info

Publication number: JPS62152674U
Application number: JP4023786U
Authority: JP
Priority date: 1986-03-19
Filing date: 1986-03-19
Publication date: 1987-09-28

Description

[Brief explanation of the drawing]

第１図は本考案に係るボイスコイル型リニアモ
ータの実施例を示す断面図、第２図は同上実施例
における磁束の状態を示す作用説明図、第３図は
同じく磁束の状態を示す作用説明図、第４図は従
来のボイスコイル型リニアモータの例を示す断面
図、第５図は同上従来例における磁束密度分布状
態を示す線図、第６図は上記従来例における磁束
の状態を第３図に準じて示す作用説明図である。１２…永久磁石、１６…コイル、１９，２０…
補助磁石。 Fig. 1 is a sectional view showing an embodiment of the voice coil type linear motor according to the present invention, Fig. 2 is an action explanatory diagram showing the state of magnetic flux in the same embodiment, and Fig. 3 is an action explanatory diagram showing the state of magnetic flux in the same embodiment. 4 is a cross-sectional view showing an example of a conventional voice coil type linear motor, FIG. 5 is a diagram showing the magnetic flux density distribution state in the conventional example, and FIG. 6 is a diagram showing the state of magnetic flux in the conventional example. FIG. 3 is an action explanatory diagram shown in accordance with FIG. 3; 12...Permanent magnet, 16...Coil, 19,20...
Auxiliary magnet.

Claims

[Scope of utility model registration request]

In a voice coil type linear motor in which a coil is movably provided on the inner surface of a permanent magnet whose inner and outer surfaces are magnetic poles, both sides in the coil moving direction are magnetic poles, facing the end face of the permanent magnet in the coil moving direction. A voice coil type linear motor characterized in that an auxiliary magnet is provided, and a magnetic pole on a surface of the auxiliary magnet facing the permanent magnet is the same as a magnetic pole on an inner surface of the permanent magnet.