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JPS53156503

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complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
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DESCRIPTION JPS53156503
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view of a needle
vibration mechanism according to the present invention. FIG. 2 is an enlarged longitudinal crosssectional view around the central portion of the magnet. In the figure, 1 ..... central part of
magnet, 2 ..... cantilever, 3 ..... magnet, 4 ..... damper rubber, 5 ..... same support Block, 6
иииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии needle case, 11 ...... cantilever Jo
India adapter, 12 ...... pivot ?Ke unit, 13 ...... pull holes, 14 ...... damper rubber projections, 15 ......
tip chip, 16 ...... damper rubber guards parts
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a needle vibration
mechanism of a pickup cartridge, and it is an object of the present invention to reduce the
mechanical impedance of the needle tip. The pick-up cartridge according to the present invention
is a book that not only allows easy and proper adjustment of needle tip compliance and
frequency characteristics, but also makes it possible to make arbitrary fine adjustments. There
was an unsolved problem that the displacement before and after that was large. The present
invention has been proposed to solve this problem, and will be described in detail with reference
to the drawings below. The pivot receiver 12 is continuously provided on a cantilever having a
needle tip 15 between the 1 ? ? tip. The damper rubber support flock 5 which is integrated
with the magnet 3, the damper rubber No., and the damper rubber and can move back and forth
in the holder 6) is disposed, and the conical recess-like pivot receiver 12 at the center of the
magnet has a base The extension is attached to the cantilever 2 in a contactless manner via the
lead-in hole 13 attached to the needle case 10 and attached to the cantilever 2, and the tine-like
pivot 9 is in the direction of the tip of the cantilever and the longitudinal center It is supported by
the adjustment screw support block 8 in the holder 6 while being in contact from the direction
parallel to the axis and being continuous with the 1 damper rubber support block 5 Pickup
needle vibration mechanism arranged so that the adjustment screw can be adjusted from the
back of the damper rubber support block 5 so that the damper rubber support block 5 moves
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back and forth to adjust the pressure on the forward damper (3) The receiving part of the
damper rubber 4 is formed in a projecting shape 14 and the contact part for pressing the
corresponding back face of the formed magnet center part pivot receiver 12 to the back face
forms the part 16 in a recessed form, and the pivot tip and the damper The central portion of the
central thin magnet central portion 1 which makes the distance ? between the rubber tips
approach is referred to as ???. The principle of operation of the pickup cartridge according to
the present invention is that, when the needle tip 15 is driven by a signal from the recording
sound groove, the signal is transmitted from the needle tip 15 through the cantilever 2 to the
magnet 3 having the magnet central portion 1 Be done. At this time, the contact portion with the
pivot 9 is formed in a conical recess shape in the central portion 1 of the magnet, so that the
pivot 9 having a steeple-like tip end supports tb to support one point, and a complete surface
vibration fulcrum. The needle vibration system can perform a complete rotational movement
around this vibration fulcrum. As a result, the 1'4 vibration fulcrum becomes clear, and a high
fidelity reproduced sound can be obtained from the low band to the high band.
In the present invention, since the central portion 1 of the magnet is configured to be thin in the
central barrel and disposed so that the tip of the pivot and the tip of the damper rubber are close
to each other, the capsule position before and after the magnet is reduced even when
transmitting needle vibration. It has the effect of reducing the impedance. On the other hand,
since the tamper rubber receiver on the back surface of the central portion 1 of the magnet is
formed in a concave shape, it is easy to fix the pressure of the punch rubber 4 as a fulcrum or to
fix it easily. As a result, the effect of enabling high fidelity reproduction due to the reduction of
the harmonic liquid balls is also produced. ? In this case, as shown in the figure, the damper
rubber receiver forms the portion 16 into a conical round shape, It would be more effective to
configure the damper rubber projections to fit here. As described above, according to the present
invention, in addition to reducing the mechanical impedance of the needle source, it is possible to
provide the needle vibration mechanism of the pickup cartridge capable of realizing high fidelity
reproduction by reducing the mixed variation M balls (5, ,-
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