JPH0330774U - - Google Patents

Description

[Brief explanation of drawings]

1 to 3 show an embodiment of the present invention,
Fig. 1 is a cross-sectional plan view of the main part, Fig. 2 is a schematic perspective view of the main part, and Fig. 3 shows the current flowing through the coil and the detection output of the Hall element when moving the movable element to the left. It is a time chart. 4 and 5 are schematic perspective views showing other embodiments of the present invention, respectively. FIG. 6 is a diagram corresponding to FIG. 1 showing a conventional configuration. In the drawing, 11 is a stator, 12 is a coil, 13 is a mover, 14 and 15 are permanent magnets, 16 and 17 are iron cores, 19 is a Hall element (magnetic detection means), 20 is a mover, 22 is a mover, 23 indicates a permanent magnet.

Claims (1)

[Scope of utility model registration request] A stator configured by arranging a plurality of coils, and magnetized magnets arranged on both sides of the stator to face the coils, with opposite poles having different polarities and adjacent poles having different polarities. a movable element that has a permanent magnet and has an iron core placed outside the permanent magnet and is movable in the arrangement direction of the coils; and a magnet that detects the magnetic flux of the permanent magnet interlinked with the coil. Detecting means, the linear DC motor is configured to move the movable element by controlling the direction of current flowing through each of the coils based on the detection output of the magnetic detecting means.