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JPS5723100

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DESCRIPTION JPS5723100
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a conventional
electromagnetic transducer, FIG. 2 is a perspective view of an essential part of one component
thereof, and FIG. 3 is an electromagnetic transducer according to an embodiment of the present
invention. It is principal part sectional drawing of. 4 иииииии Magnet, 41.42 ииииииииииииииииииииииииииииииииииииииии
Frame, 1 ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии
Pole piece
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to electromagnetic
radiation compliance and is intended to achieve the same quality. Conventionally, as shown in
FIG. 1, a direct magnet seat 44'i of this frozen type is composed of a pole piece 1, a coil 2, a yaw
3 and a stone 4 ball 5 frame. Here, in order to make the distance between the + K moving plate 6,
the t-rubys 1 and the magnet 4 uniform, ?-? ? ? ? ░ ? ? ? ? ? magnet 4. The fire
surface 1rOi of the frame 5 is uniformized by lapping, but the magnet 4 is chipped at its i-corner
(corner: 231 vv 2 noge) and the outer periphery, jagged like 21 '8 A. It is often the case. On the
other hand, it is said that it is difficult to remove oil scum, metal scraps, and other wastes from
the magnet 4 and the frame 5 and between the coil 2 and the magnet 4 at the time of lapping. I
have a drawback. Also, the dust of this place is hot and humid, and rusts on the magnet 2 to
abolish it, and the rust 5 may grow up and close the gap with the pregnancy support plate. In the
following, one example is described with reference to FIG. 3 in which the above-mentioned
defects are eliminated. 1 to 5 are the same as those of the same reference numerals in FIG. 1
except that taper portions 41 and 42 are provided by dropping corner portions in one ringshaped and four magnets. The frame 5 is also tapered. Therefore, while the damage to the
corners of the magnet 4 can be prevented by the deparing portions 41 and 42, dust and the like
entering the-between the coil 2 and the magnet 40, the magnet 4 and the frame 9 can be
removed This makes it easy to prevent the deterioration of the characteristics due to dust S-. In
the above embodiment, although the taper 1 is also provided to the frame 5 in comparison with
03-05-2019
1
the magnet 4, it is not necessary to provide a special extra in comparison with the magnet 4 due
to its material.
03-05-2019
2
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