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JPS516918

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DESCRIPTION JPS516918
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a conventional
microphone with volume control, FIG. 2 is a circuit diagram showing an internal circuit of FIG. 1,
and FIG. 3 is a holding state of the microphone of FIG. 4 is a perspective view showing an
embodiment of the microphone with volume control according to the present invention, FIG. 5 is
a circuit diagram showing an internal circuit of FIG. 4, and FIG. 6 is an example of a microphone
holder. FIG. 7 is a perspective view showing the holding state of the microphone of FIG. 4 by the
microphone holder of FIG. 40 ииииии Microphone, 41 ииииии Microphone body, 42 ииииии Microphone unit,
43 иииииииииииииииииииииииииииииииии Slide type variable resistance vessel. 1-FIG. 2 FIG. 2 FIG. 3 1- 42- FIG. 4 2561 (3) FIG. 4 FIG. 5 FIG. 6 FIG. 7 FIG.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the improvement
of a microphone with a loud sound siu used in, for example, a tape recorder. The conventional
microphone flexible tape recorder C2 is provided with a tape recorder main body 4 two
microphone holder), and this holter-<= two are held together by a double adjustment attachment
microphone-with the microphone Use or take out the microphone from the holder and use it by
the recording operator. The former use form corresponds to the use of a so-called built-in
microphone, and since the distance between the bell sound operator and the microphone is
usually long, it is desirable that the sensitivity of the microphone be set to the highest state C2.
Therefore, in the conventional microphone, as shown in FIG. 1B, the side surface of the
microphone 10 ? two switch levers 11 and the rotary gear case 12 for volume control are
projected, and the microphone output is squeezed from the switch lever II 2 (2) It is configured
to switch. That is, as shown in the second factor, one of the six microphones 10 connects one end
of the microphone unit 21 to the movable terminal 28 of the switching switch 22 and the switch
22 of the closed solid terminal 24 and the microphone unit 21 In the dark with the other end!
The rotary type town change resistor 25 for I1III is connected. The sliding terminal of the
variable resistor 28, the normally open @ fixed terminal 27 of the switch 21 and the other end of
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the microphone unit 21 are core wires of the microphone connection cord 18 (not shown). ) The
microphone input end of the tape recorder body via () has been continued. The switch lever 11 of
the JJ forcible cutting switch 22 projects to the side surface of the C: microphone as described
above, and holds the microphone holder 81 ? two microphones 10 projected to the side surface
of the tape recorder main body as shown in FIG. In this state, the tape recorder is driven by being
engaged with the projection 82 provided on the side surface of the tape recorder main body. As a
result, the 1st II switching swissona 22 is switched to the normally open side fixed foot terminal
271N, and the output of the microphone unit 21 becomes irrelevant C 2 maximum state (two) at
the position of the variable resistor 625 at the festival position. However, according to the above
configuration, the rotary variable abrasive vc 25 and the changeover switch 22 are required for
sound t-wart and volume maximum setting, and three cores of the connection cord 18 are
required for microphone output transmission. In addition, the protrusion 82 is required in the chi
precoater body III to drive the changeover switch 2z, which is not necessarily advantageous in
cost. The present invention has been made to eliminate the above-mentioned drawbacks, and
provides a microphone with a volume controller capable of achieving cost reduction by means of
the configuration type l12i +.
Hereinafter, an embodiment of the present invention will be described in detail with reference to
the drawings. In the microphone 40 shown in FIG. 4, the microphone unit 42 is attached to the
tip of the elongated microphone main body 41, and the side C2 has the volume-phased sliding
type knob 48 projecting. The sliding knob 48 is an operating portion of the sliding town variable
resistor (see FIG. 51) attached in the microphone body 41, and the moving direction is along the
longitudinal direction of the microphone 40-two. . In the vicinity of the end of the microphone tip
side of the movement range of the knob 48, the tip end of the microphone 40 is stepped from the
rear end side (a stepped portion 44 having two protrusions 4 is provided. In the stepped portion
44, when the knob 48 is moved to one end of the microphone tip end of the movement range,
the side of the knob 48 in the back end direction of the microphone substantially coincides with
the longitudinal direction of the microphone. Reference numeral 45 denotes a connection cord
for connecting the microphone 40 and the tape recorder main body. In the microphone 40, as
shown in FIG. 5t, the microphone unit 42 and the slide type variable resistor 51 are connected in
series, for example, in twos, and the output of the microphone unit 42 is at both ends of the
variable resistor 51. It is supplied to And one end 52 of the variable resistor 51 and the sliding
end 52 are the core 4 I (not shown) of the connection cord 45. The microphone input end (2 * d)
of the tape recorder body via). The mounting direction of the variable resistor 51 is determined
so that the output resistance of the variable resistor 51 increases as the knob 48 slides in the
microphone light leakage direction. For example, it is assumed that a 6-t-n1 niho-shaped microholster 61 in the shape of a top face and a letter J] is protruded from the tape recorder main
body. When the microphone 740 is held so that the microphone unit 42 of the microphone 40
faces upward from the microphone holder 61 ? 2, as shown in FIG. 7, the knob 48 on the
microphone holder 61 lij + two. Sugi is locked! Move to the microphone tip 1 ?-? of lI + # 1H.
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In this state, the microphone rear end face of the microphone 4o 48 and the step 11144 are held
in contact with the upper surface of the microphone holder 61. At this time, the entire resistance
of the variable resistor 651 corresponds to the output resistance, and the microphone 4 o is in
the maximum output state. Therefore, this condition is one with the microphone internal tape
recorder! 2 required microphone sensitivity ? ml 2 equivalent. The continuous type of inside /
outside / communication portion 62 of the microphone holder 61 is for passing the connecting
lead 45 from the holder-sword into the holder circle when the microphone 4o is inserted from
above.
In addition, the microphone holder 61 may be provided with a tape mike storage portion in the
tape recorder main body 111 ([1C does not sleep, and the microphone holder 61 may be
provided in the microphone storage portion, the knob of the microphone 40 The mutual shape of
the microphone 40 and the microphone holder 61 is set so that the upper surface C2 of the
microphone holder 61 is always held at the same position. Further, the microphone holder 61 is
not necessarily in the form of an upper surface, and may have a shape that does not have an
internal / external connecting portion such as a circular correction surface or an upper surface
square. In the case of such a shape, the microphone 40 may be taken out from the holder in a
state where the connection cord 45 passes through the inside of the microphone holder in the
vertical direction C :. Further, in the case where only the knob 48 of the microphone 40 is held
and held by 71 holders 71 ? 2, the step 44 is unnecessary. According to the microphone 40 as
described above, the microphone holder of the tape recorder main body is built by incorporating
one sliding variable resistor 51 into the micro-hole / longitudinal direction ? two and making
the knob 48 project from the side of the microphone The highest sensitivity state can be
automatically adjusted to 5-2 when held at the same time. For this reason, the construction is
extremely simple and cost-effective as compared with the rotary type town change gear and the
changeover switch which are conventionally required. Further, according to the microphone 40I:
according to the present invention, since the knob 48 is locked to the upper surface of the
microphone holter, the projection for the switch lever, which is the conventional microphone
holder close gI. It is. Further, the number of core wires of the connection cord 45 is three for
transmitting the output of the microphone 40, which is cost-effective as compared to the
conventional eight required. When the microphone 40 is taken out of the microphone holder 61
and used, of course, the volume of the microphone output can be adjusted by the operation C2 of
the knob 48. As described above, the present invention can provide a microphone with a volume
control that can achieve cost reduction simply.
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