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JPH11234774

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DESCRIPTION JPH11234774
[0001]
FIELD OF THE INVENTION The present invention relates to microphones, and more particularly
to hand-held microphones.
[0002]
2. Description of the Related Art A microphone of a hand-held type generally has a shape as
shown in FIG. That is, the microphone 60 mainly includes a gauge unit 61 for picking up an
audio, and a grip unit 62 for holding by hand. At the lower end portion of the grip portion 62, a
microphone cable 63 for electrically connecting the microphone 60 to the amplifier is connected.
[0003]
In such a microphone 60, a slide type switch 64 that switches on / off is often provided in a part
of the grip portion 62.
[0004]
However, when the switch 64 is provided, the switch 64 may be forgotten to be turned on or off.
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If you forget to turn on the microphone 60, you will notice immediately that it will not collect
sound, but if you turn it off, if you place the microphone 60 near the speaker, there is a problem
that a loud howling sound will be produced.
[0005]
The present invention has been made in view of these points, and it is an object of the present
invention to provide a microphone capable of preventing a switch from forgetting to turn off.
[0006]
According to the present invention, in order to solve the above problems, in a hand-held type
microphone, an elastic member provided on a grip and deformed by a gripping force, and
provided on an inner portion of the elastic member, There is provided a microphone
characterized by comprising: a contact portion connecting an audio signal line when the elastic
member is deformed inward.
[0007]
In such a microphone, when the user grips the grip, the elastic member deforms inward to turn
on the inner contact portion, and the audio signal line is connected.
This allows the use of a microphone.
On the other hand, when the user releases the grip, the elastic member returns to the original
shape, so that the contact portion is turned off and the audio signal line is automatically
disconnected. This prevents the switch from being turned off.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be
described below with reference to the drawings. FIG. 2 is a view showing the external
configuration of the microphone of this embodiment. The microphone 10 mainly includes a
gauge unit 11 for picking up voice and a grip 12 for holding by hand. A microphone cable 13 for
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electrically connecting the microphone 10 to an amplifier is connected to the lower end portion
of the grip 12. Further, a switch portion 14 is provided at a portion where the grip 12 is easy to
touch. The switch unit 14 is formed of an elastic member as described later, and the switch is
automatically turned on when held by the user.
[0009]
FIG. 1 is a side sectional view showing a schematic configuration inside the microphone 10. The
microphone 10 is generally casing by a gauge 11 and a grip 12. A foam 11 a is attached to the
inner surface of the gauge 11. Further, inside the microphone 10, a sound collection unit 15 is
provided.
[0010]
The sound collection unit 15 collects the sound coming in through the gauge 11 and the foam
11a through the foam 15a, and converts it into an electric sound signal. This audio signal is sent
to the terminal 18 side through the connection lines 16 and 17. The microphone cable 13 shown
in FIG. 2 is connected to the terminal 18, whereby an audio signal is sent to the amplifier side.
[0011]
By the way, the switch section 14 is connected in the middle of one of the connection lines 16
and 17. The switch portion 14 mainly includes a ring-shaped elastic member 21, an outer contact
member 22, and an inner contact member 23. The elastic member 21 is made of, for example,
rubber or the like. A ring-shaped outer contact member 22 is attached to the inner side surface
of the elastic member 21. The outer contact member 22 has a contact portion 221 made of a
conductive material. The specific configuration of the outer contact member 22 will be described
later.
[0012]
On the other hand, the inner contact member 23 is a ribbon-like member as will be described
later, and is attached so as to be wound around the outer peripheral surface of the step 12 a of
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the grip 12. The inner contact member 23 has two contact portions 231 and 232 made of a
conductive material. The contact portions 231 and 232 are electrically insulated from each other,
and are usually provided so as to be separated from the contact portion 221 of the outer contact
member 22 by a predetermined distance. Here, the predetermined interval is an interval that can
contact the contact portion 221 when the elastic member 21 is deformed inward. Further, among
the contact points, the contact portion 231 is connected to a line 16 a on the sound collection
unit 15 side of the connection line 16. On the other hand, a wire 16 b on the terminal 18 side is
connected to the contact 232.
[0013]
FIG. 3 is a perspective view showing a specific configuration of the elastic member 21 and the
outer contact member 22. As shown in FIG. Here, in order to make it intelligible, it has shown in
the state which notched one part. Two annular grooves 211 and 212 are formed on the inner
side surface 21 b of the elastic member 21. The grooves 211 and 212 allow the pressed portion
to be easily deformed inwardly when the outer surface 21 a is pressed.
[0014]
Further, on the side walls of the grooves 211 and 212, annular slits 211a and 211b are formed.
Upper and lower end portions 22a and 22b of the outer contact member 22 are respectively
inserted into the slits 211a and 211b. The outer contact member 22 is entirely formed of, for
example, a flexible thin substrate, and the contact portion 221 is printed with a copper material
on the surface of most parts except for the end portions 22a and 22b. The width of the contact
portion 221 is formed to be larger than at least the gap between the contact portions 231 and
232 of the inner contact member 23.
[0015]
FIG. 4 is a perspective view showing a specific configuration of the inner contact member 23. The
inner contact member 23 is formed of, for example, a flexible thin substrate in the form of a
ribbon, for example. On one surface of the inner contact member 23, the contact portions 231
and 232 are printed with a copper material, leaving a gap 23a. Such an inner contact member 23
is wound around the step 12a of the grip 12 shown in FIG. 1 with the contact portions 231 and
232 side out.
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[0016]
Next, the operation of the switch unit 14 in the microphone 10 of this embodiment having such a
configuration will be described. 5A and 5B are diagrams showing the operation of the switch unit
14 in the microphone 10, where FIG. 5A shows a steady state, and FIG. 5B shows a state when
the microphone 10 is gripped. First, when the microphone 10 is not held, as shown in FIG. 7A,
the elastic member 21 of the switch portion 14 is not deformed, so the contact portion 221 of
the outer contact member 22 is the contact portion of the inner contact member 23 It is in the
state separated from 231,232. Therefore, the connection line 16a connected to the sound
collection unit 15 and the connection line 16b connected to the terminal 18 are disconnected,
and the switch is off.
[0017]
On the other hand, when the user has the switch unit 14 for using the microphone 10, as shown
in FIG. 7B, the elastic member 21 is pushed inward by the force of the hand to be deformed.
Thereby, since the contact part 221 contacts the contact parts 231 and 232, the contact parts
231 and 232 are electrically connected to each other, and the switch is turned on. Also when the
microphone 10 is attached to the microphone stand, the state shown in FIG.
[0018]
When the user releases the microphone 10, the elastic member 21 returns to the state shown in
FIG. 6A, and the switch is automatically turned off. Therefore, the switch of the microphone 10 is
never turned off.
[0019]
Further, in the present embodiment, since the elastic member 21 is formed in a ring shape and
the outer contact member 22 and the inner contact member 23 are provided along the ring, the
switch is turned on regardless of which portion of the elastic member 21 is gripped. . Therefore,
it is easy to use.
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[0020]
Furthermore, in the present embodiment, since the switch is turned on by deforming the elastic
member 21, touch noise can be significantly reduced as compared with the conventional slide
type switch.
[0021]
In the present embodiment, the contact portions 231 and 232 connected to the connection wire
16 are provided on the inner side, and the contact portion 221 for electrically connecting them is
provided on the outer side. However, both may be attached in reverse. .
[0022]
Further, in the present embodiment, the switch is turned on by the deformation of the elastic
member 21, but a pressure contact switch may be provided on the grip 12.
[0023]
As described above, in the present invention, an elastic member provided on the grip and
deformed by the gripping force is provided on the grip, and the voice signal line is formed when
the elastic member is deformed inward on the inner part of the elastic member. Since the contact
point portion for connecting is provided, the user can turn on the microphone when grasping the
grip, and can turn off the microphone when the user releases the grip.
Therefore, it is possible to prevent the switch from turning off.
[0024]
In addition, compared to the conventional slide switch, touch noise can be significantly reduced.
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