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JPH07288889

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DESCRIPTION JPH07288889
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
microphone cover, and more particularly to a microphone cover which is clean and has no
unpleasant odor and also has an acoustic effect.
[0002]
2. Description of the Related Art With the spread of karaoke, the opportunity for microphones to
be used by an unspecified number of people has been greatly increased. By the way, since the
microphone is used by bringing its head portion close to the mouth, the user's breath and spit hit
the head portion, causing a problem of being both dirty and giving off an offensive odor. In order
to solve this problem, a microphone cover described in Japanese Utility Model Application
Publication No. 1-36396 has been conventionally provided. This is a stack of two air-permeable
and hygroscopic two cross-shaped sheets (base cloth and covering cloth) large enough to cover
the head of the microphone, and the medicine is placed between the sheets to make the head A
member such as a rubber ring is provided on one side of the two sheets in order to fix them.
[0003]
SUMMARY OF THE INVENTION In the microphone cover of the conventional example, the base
cloth and the covering cloth are cut in a cross shape, and the medicine is fixed to the base cloth
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via the adhesive, and then the base cloth and the covering cloth are overlapped. It integrates and
it manufactures by attaching fixing members, such as a rubber ring, to one side of a sheet, and
had the fault that a manufacturing process was complicated. In addition, although the offensive
odor is removed because the drug is used, there is also a disadvantage that the smell of the drug
sticks to the nose. Furthermore, the cross-shaped sheet wraps the head of the microphone, and
the side pieces of the sheet are collected in the grip and fixed by a fixing member such as a
rubber ring, so that the appearance is not very good. It also had a drawback.
[0004]
The present invention has been made in view of such problems of the prior art, and the object of
the present invention is to provide a microphone cover that is clean, has deodorizing and
acoustic effects, and also has a good appearance in appearance. It is something to try.
[0005]
[Means for Solving the Problems] In order to achieve the above object, the microphone cover in
the present invention comprises a skirt portion, a rubber braid portion continuously knitted on
the skirt portion and tightening a grip portion, and a rubber braid portion And a covering section
which is continuously knitted and covers the head section.
In addition, the bamboo extract is attached to the microphone cover at the time of dyeing or after
sewing.
[0006]
In the microphone cover of the present invention, spit and breath odor causing substances
attached when the user exhales adhere to the cover, and the sensitive part of the microphone
built in the head part can be protected. . In addition, the spit, bad breath odor causing substance
and the like attached to the microphone cover are deodorized and antibacterial action of the
bamboo extract attached to the cover, thereby eliminating the smell and suppressing the
reproduction of various bacteria. And, this deodorizing / antibacterial action is hard to change
with time and can be kept for a long time. Moreover, it is odorless, there is no fear of causing side
effects, and the user does not feel a drug smell. Furthermore, since the head portion is adapted to
the shape of the head portion and configured to be stretchable, it looks good, and resonates with
the sound transmitted through the cover to have an acoustic effect.
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[0007]
Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is
a front view in the knitting state showing the back side of the microphone cover 10 according to
the present invention, and FIG. 2 is a front view in a state of being attached to the microphone
20.
[0008]
The microphone cover 10 is knitted using a circular knitting machine such as a women's socks
knitting machine, and a skirt portion 11 which is knitted in a knitting start process, a rubber
knitting portion 12 which is continuously knitted on the skirt portion 11, and a rubber knitting
And a covering portion 13 continuously knitted on the portion 12. Then, the microphone cover
10 is knitted in a tubular shape by a circular knitting machine.
[0009]
The skirt portion 11 is knitted with chemical fiber yarn such as thin (for example, 40 d) nylon,
polyurethane, or natural fiber yarn. The skirt portion 11 may be knitted by an appropriate
length, for example, 40 to 50 course by knit knitting or the like as desired.
[0010]
The rubber knitting portion 12 is knitted by continuously inserting a rubber thread and
performing 1: 1 mis-knitting on the skirt portion 11. Thus, the fabric is adorned and the
appearance is favorable. Further, the rubber knitting portion 12 exerts an action of tightening the
grip portion 22 so that the covering portion 13 which is put on the head portion 21 of the
microphone 20 is not removed carelessly. The rubber knitting portion 12 is knitted with a rubber
thread of a desired thickness (for example, 140 d). Further, the rubber knitting portion 12 may
be knitted by knitting an appropriate length, for example, 70 to 80 courses, as desired.
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[0011]
Similarly to the skirt portion 11, the encapsulation portion 13 is knitted with fine (for example,
40 d) chemical fiber yarn such as nylon, polyurethane, or natural fiber yarn. The sheath portion
13 is preferable because it can be fitted to the head portion 21 of the microphone 20 having an
appropriate shape when it is knitted with a chemical fiber thread having stretchability. The
envelope portion 13 may be knitted over a desired length so as to fit to the head portion 21 of
the microphone 20 of an appropriate shape.
[0012]
The enveloping part 13 continuously knitted on the rubber knitting part 12 inserts, for example,
one course of the color yarn 14 when 40 to 60 courses are knitted. This is used as a mark when
sewing and cutting the microphone cover 10 into a shape suitable for the microphone 20 after
knitting. After that, for example, even when the 240-260 course knitting is performed, one
course of the color yarn 15 is inserted in order to set it as a mark at the time of sewing and
cutting.
[0013]
Finally, the end of the envelope 13 containing the color yarn 15 is, for example, a 20 to 30
course 1: 1 tack knit as a fraying stopper. The microphone cover 10 thus knitted is sewn by a
lock sewing machine in a portion between the color yarn 14 and the color yarn 15 of the
envelope 13 according to the curved shape of the microphone 20, and the desired microphone
cover 10 is provided. Be done. Reference numeral 16 denotes a sewing line to be sewn by the
lock sewing machine.
[0014]
The microphone cover 10 knitted by the above-described process adheres the bamboo extract at
the time of dyeing or after sewing. First, various bamboos such as Shinso bamboo, bamboo
bamboo, Chinese bamboo, light bamboo and the like are described in Japanese Patent Publication
No. 5-25506 (Patent No. 1818897), and the bamboo extract has a steam temperature of 80 to
150.degree. After steaming with steam, it is dried and pulverized to obtain powdery particles
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(average particle diameter 0.5 μm to 4 mm). Then, after passing through the magnetic field and
dissolving the semi-activated oxygen in water and immersing the activated bamboo powder and
granules in this water, the powder and granules are dehydrated and dried to absorb bamboo.
Releasable granular material is obtained.
[0015]
Further, as described in Japanese Patent Publication No. 4-74074 (Patent No. 1786552), a step
of bringing 5-15 atmospheric pressure water into contact with an inorganic substance such as a
mineral inorganic substance, and aerating the pressurized water obtained through this step. The
pressurized water is circulated alternately to obtain activated mineral water.
[0016]
Then, the bamboo absorbing and releasing granular material is filled in the pressure tank, the
activated mineral water put in the water storage tank is heated and sent by the pump into the
pressure tank, and stored water again through the high performance filter. The bamboo extract is
obtained by repeating the process of circulating it in the tank.
Thus, the deodorizing and antibacterial action of the bamboo extract eliminates the smell and
suppresses the growth of bacteria, and is harmless to the human body.
[0017]
Next, using the microphone cover according to the present invention, a sound pressure test after
passing through the microphone was performed. FIG. 3 is a schematic view showing a
measurement system of a sound pressure test after passing through a microphone, and FIG. 4 is
a schematic view showing a sound pressure graph thereof. In FIG. 3, OSC is a low frequency
oscillator, Al is a drive amplifier, V is a voltmeter, LS is a 16 cm full range speaker, AL is a
standard closed box, MIC is a measurement microphone, DUT is a microphone cover according to
the present invention, and Az is The microphone amplifier REC is an automatic recording device.
[0018]
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In the measurement system shown in FIG. 3, a constant voltage corresponding to 1 W is applied
to the speaker LS, and the microphone cover according to the present invention at a point of 1 m
on the reference axis from the reference point of the speaker LS in the band of 20 to 20,000 Hz.
The sound pressure after passing through the microphone MIC was measured with and without
the DUT attached. As shown in FIG. 4, the test results show that even when the microphone cover
DUT is worn, there is almost no difference in sound pressure from when it is not worn, and the
sound pressure is slightly decreased around 20,000 Hz, and the acoustic effect is not impaired It
was a thing.
[0019]
As described above, since the present invention has the skirt portion, the rubber knitted portion
for tightening the grip portion, and the covering portion for covering the head portion, the
microphone having various shapes is provided. It also fits the head portion of the head and has a
good appearance. In addition, since the bamboo extract is attached to the microphone cover, it
has deodorizing and antibacterial action and is harmless to human body. Furthermore, by
knitting the envelope portion with a thin chemical fiber thread, it resonates with the sound
passing through the microphone cover to produce an acoustic effect.
[0020]
Brief description of the drawings
[0021]
1 is a front view in the knitting state showing the back side of the microphone cover.
[0022]
2 is a front view of a state attached to the microphone.
[0023]
3 is a schematic diagram showing a measurement system of sound pressure test after passing
through the microphone.
[0024]
4 is a schematic view showing the test results (sound pressure glass) of the sound pressure test.
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[0025]
Explanation of sign
[0026]
DESCRIPTION OF SYMBOLS 10 Microphone cover 11 Skirt part 12 Rubber knitting part 13
Encapsulated part 20 Microphone 21 Head part 22 Grip part
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