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JPS49129504

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DESCRIPTION JPS49129504
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of a conventional pickup, FIG. 2 is a
perspective view of an embodiment of a damper used in the present invention, and FIG. 3 is a
perspective view of a video disc pickup according to the present invention. Figure shows. 1 ......
playback needle, 2 ...... pressure-sensitive E ииии recess. -7- Japanese Utility Model Application
Publication No. 49-129504 (2) Fig. 2-8-
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pickup recorded
on a recording medium and reproducing a nineteen-point audio signal, and the invention relates
to a damper Bk attached to the upper surface of a pressure-sensitive element. FIG. 1 shows a
conventional pickup for a video disc, and the pickup to be prayed is a reproduction needle fl) and
a pressure sensitive element for replacing mechanical vibration transmitted to the reproduction
needle with an electric signal. ! And a damper 111 attached to the upper surface of the two
pressure-sensitive elements, and a holder 1141 attached to the damper. In this pickup structure,
the damper is in the form of a plate, which is difficult to position in bonding with the holder
during rounding assembly, and relative displacement occurs in the finished product after
assembly (II standing accuracy is poor) Sometimes the resolution of the resolution of the
epilogue signal is lowered, the noise is increased, the tracking error and other adverse effects
occur, and a special precision jig is required at the time of assembly. Furthermore, the joint
surface between the damper and the holder was flat and could break due to external external
shear stress such as an impact at the time of rolling reproduction. The present invention has
been made for the purpose of improving such a drawback, and relates to a pickup for a video
disc which uses the damper structure shown in FIG. The following description will be made with
reference to the drawings. Damper + il # i used in the present invention As shown in FIG. 2, a
recess S (for example, a groove) (6) is provided on the surface facing the holding body (4) K, and
the holding body (4) t. It is something to wear. The size of this recess (6) is such that the tip of
the holder (4) is just inserted 3. In addition, the fixing of the holding body (41 and the damper 1
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& i can be performed by, for example, an adhesive such as a synthetic resin type or a rubber
type. FIG. 6 is a perspective view of a pickup assembled using the above-mentioned damper, and
in the figure only the case where the cross section of the holding body is rectangular is
illustrated, but the cross section is circular, semicircular or triangular. In any case (even in the
said damper to conform to its shape !! It is only necessary to change the shape of the 1 m
section. According to the pickup of the present invention, the variation in relative position at the
junction of the damper and the holder is significantly reduced, and the stability of the relative
position between the both is increased and good reproduction is performed. When assembling a
pickup, it is only necessary to insert the holder into the recess 11 of the # c # i damper and
position it in only one direction (the direction shown by the arrow in Fig. 113). It is good.
Furthermore, compared with the conventional damper, the fitting area of the holding body and
the Danno rod is increased, and the convex portions at both ends of the damper act as a stopper
against the shearing stress to cause the both to break. It has practical effects such as h.
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