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@) Int-C1- @ Japan Class 0 Japan H04r23100102034 Patent ■ Fluid type pickup ◎ Japanese
Patent Application No. 44-98534 [phase] Application No. 441969) Dec. 8 @ inventor Yamamoto
Michihiro Kyoto Prefecture Osamukuni Nagaoka Town Okami Inji Small Letters Igaji 20 Tateishi
Electric Co., Ltd. Central Research Laboratory O application Tateishi Electric Co., Ltd. Kyoto,
Kyoto Uyuku-ku Hanazono Dodocho 10.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a fluid element in steady state, FIG. 2
shows a fluid element in operation, and FIG. 3 is a perspective view showing one sound. 」
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fluid type
pickup, and more particularly to one that converts mechanical vibration of a detection element
that moves in accordance with irregularities provided on a recording plate into a fluid output.
Record board pickups now convert most of the record needle's vibration into electrical quantities.
Before that, the vibration of the record needle was amplified by a diaphragm or the like and
converted into air vibration to catch the recorded content of the record board. z Unlike the above,
it is an object of the present invention to provide a pickup for converting mechanical vibration of
a detector such as a record needle into fluid output of a fluidic element as mentioned at the
outset. Hereinafter, the present invention will be described in detail based on embodiments of the
present invention. The fluid element 1 is a main jet boat of fluid at a constant air pressure 2.
Main jet path 3. Control area Output flow passage 5.6 leading to the region 4 and vent (air
release port) γ. An output boat 8.9 is provided to form a flow path. At the center of the control
area 4, a plate 10 is provided supported by a shaft 11. If this shaft 11 rotates, the plate 10 'is
also in the control area. Patent Office Publication No. 48-38244. ユ9,48ヶ。 19 □ 33, □ 8.6
° Both adhere to each other so as to rotate at the number 1 (total 2 pages) of the invention. The
shaft 110 portions on both sides of the plate 10 are rotatably supported by the element 1. Then,
one of the shafts 11 is constructed so as to come out of the element 1 and an arm 125 is fixed to
the part where the shaft 11 comes out. At the free end of the arm 12 a needle 13 is mounted.
Accordingly, when the arm 12 vibrates in the direction of the arrow in FIG. 3, the plate 10 also
vibrates accordingly. The case where the fluid type pickup configured as described above is
applied to the reproduction of the 10 code plate 14 will be described. When the needle 13 is
inserted into the groove 15 of the rotating record plate 14, the arm 12 vibrates in the direction
of the arrow according to the unevenness between the sides of the structure 15 to vibrate the
plate 10. Since the main jet at a constant pressure is always supplied from the main jet port 2 as
the fluid element r5 bite, when the plate 10 is in the direction of the main jet as shown in FIG. If
the plate 10 is inclined as shown in FIG. 2, the fluid flow is indicated by a broken arrow? It flows
into the output flow path 6 so that the output fluid is discharged from the boat 9. In this case, as
the inclination of the plate 10 is smaller, the flow rate to the vent 1 increases and the output
decreases. The arm 12 controls the inclination of the plate 10, and this time, contrary to the
inclination of the plate 10 shown in FIG.
If the control region 4 is inclined to the left and right and the flow is reversed, the control region
4 is considered not to form a coating resistance effect on the side wall of the fluid. A
corresponding amount of fluid output appears. Record day on the groove of the record board 14?
Assuming that the output is digital, the fluid output appearing in the output boat 9.8 also appears
digitally as a fluid (7) W non-92 value output. In the above example, there are two output flow
paths and a boat that eliminates the one vent provided with the vent 1? Alternatively, the output
may be differentially output from the two output ports as well known as a fluid element. The
output flow of port 8 ° 9 may be input to the next stage fluid 3-EndPage: 1 (two pairs of control
ports of the three amplification elements) connected to the pickup. As described above, according
to the first aspect of the invention, it is possible to provide a pickup which converts mechanical
vibration of a detector such as a record needle, that is, a biased fluid element into a rest output.
Figure 1 96 1 4 1 1 3 1 1 1 \ 2 \ 2 昭 48-38244,