JPS581839Y2 - Silencer - Google Patents

Description

[Detailed description of the invention] This invention relates to a silencer suitable for use in vocal practice.

By the way, if you are seriously trying to practice your voice in singing, poetry, or swaying, you have to start speaking from the bottom of your heart, otherwise the effect will not be achieved, so you can avoid raising your voice. do not have.

However, the loudness of the dog's voice spreads over a wide range of surrounding areas, and often causes trouble to others.

The present invention addresses the above-mentioned problems and enables full-scale vocal practice without causing inconvenience to others.The present invention aims to improve the ability of the voice to be transmitted to the surrounding area without interfering with vocalization in any way. It is an object of the present invention to provide a simple and easy-to-handle silencer whose size can be suppressed.

Hereinafter, an embodiment shown in the drawings will be described in detail.

In the figure, 1 is the body of the silencer, and its body is the inner cylinder 2.
It has a double structure consisting of an outer cylinder 3 and a cylindrical gap 4 between the two cylinders.

The inner cylinder 2 has, at one end exposed from the outer cylinder 3, an air inlet 5 that communicates with the inside and outside, and the other end, which is located inside the outer cylinder 3, is closed by an end wall 6. A large number of ventilation holes I communicating with the above-mentioned void 4 are bored in the circumferential surface of most of the part of the outer cylinder 3 that is fitted into the housing.

The above-mentioned air inlet 5 of the inner cylinder 2 is formed in such a shape that it can be brought into close contact with the lips of a person practicing vocalization, but does not interfere with the person's free vocalization.
The illustrated shape is one example.

On the other hand, when the outer cylinder 3 is fitted into the inner cylinder 2 at one open end, the outer cylinder 3 has a ventilation hole in the part surrounding the inner cylinder, and has a vent hole on the opposite side of the air inlet 5. The corresponding other end has a blow-off part 8, and the vent hole T of the inner cylinder is provided on the circumferential surface of the part.
A large number of ventilation holes 9 are provided which communicate with each other through gaps 4.

The end face of the blow-off portion 8 of the outer cylinder 3 is closed by an end wall 10 in the illustrated example, but if necessary, a ventilation hole may also be provided in this end wall 10, or a part or part of the wall may be closed. All of them may be removed and opened to the outside.

On the other hand, the inside of the inner cylinder 2 may be simply made hollow, but it is preferable to take some kind of measure to further enhance the sound deadening effect.

As such means, in the illustrated example, a breathable sound absorbing material 11 made of open-cell foamed resin or other material is loaded inside the inner cylinder 2.

As other means for increasing the size, for example, a large number of convex portions may be provided on the inner surface of the inner tube 2, or a large number of baffle plates may be attached to the inside of the tube.

In addition, 12 in the figure is an intake port drilled on the peripheral surface of the inner cylinder 2 near the air inlet 5, and is sized so that it can be closed with a fingertip. This is a protrusion for a handhold protruding from the outer peripheral surface near the seam 3.

In the above-mentioned configuration, in the past, the user held the vessel 1 at a suitable place, for example, the body, and pressed the blowing port 5 around the lips to prevent the voice from leaking from the surroundings. When you practice your voice by blowing your voice into the inner cylinder 2, the voice that enters the inner cylinder 2 from the air inlet 5 passes through the surrounding ventilation hole 7, and enters the air gap 4 between the inner and outer cylinders 2°3. The air flows from the air to the air outlet part 8 of the outer cylinder, and exits from the air hole 9 around this part.

However, the old voices blown from the air inlet 5 into the inner cylinder 2 are muted by the silencing effect due to reflection and interference inside the air inlet 5, and the sudden change in the cross-sectional area of the passage when passing through the vents I and 9. As a result of this effect and the silencing effect of the bending of the passage on the way from the air gap 4 to the outlet 8, the sound coming out from the outlet 8 becomes extremely small because it is effectively attenuated in sequence.

Therefore, even if you practice speaking at a high volume, the volume of your voice coming out will be greatly suppressed and will not spread widely to the surrounding area.

In addition, when the sound absorbing material 11 is loaded into the inner cylinder 2, in addition to the above-mentioned sound deadening effects, the sound absorbing material can also be expected to have a sound deadening effect, so the loudness of voices coming out will be even smaller. do.

On the other hand, when practicing vocalization, breathing may be done by separating the air inlet 5 each time, but if the air inlet 12 is used, this can be done without having to remove the air each time.

In other words, it is sufficient to cover the intake port 12 with a fingertip when vocalizing, and then open it for a few days only when inhaling.

Furthermore, since the entire voice silencer is made of synthetic resin, it can be made lightweight, so even if you hold it with one hand and practice speaking for a long time, you won't get tired of holding it.

Both the inner and outer cylinders 2 and 3 can be disassembled and assembled freely, and the sound absorbing material 11
If it is also removable, the whole can be washed at any time and kept clean at all times.

As described above, the present invention has a double-structured body with a voice inlet at one end and a voice outlet at the other end, and the voice blown from the inlet into the housing. Since it is designed to be able to efficiently attenuate the sound inside the device, if the silencer according to the present invention is used, the loudness of the voice that is about to be propagated to the surroundings can be reduced without any obstruction to vocalization. This allows you to suppress your voice to a large extent, so that even if you practice singing, poetry, or chanting at a high volume, you will not cause trouble to others, so you can practice your voice without worrying about others. , you can expect the effect of early improvement.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is a sectional view taken along line A--A in FIG. 1, and FIG. 3 is a cutaway side view. 1... Container body, 2... Inner cylinder, 3...
... Outer cylinder, 4 ... Gap, 5 ... Inlet, 6 ... End wall, 7 ... Ventilation hole, 8 ...
...Blowout part, 9...Vent hole, 11...
...Sound absorbing material, 12...Intake port.

Claims (3)

[Scope of utility model registration request] (1) An inner tube having a voice inlet at one end and having a shape that allows it to be placed closely around the lips without interfering with free vocalization, and which is closed at the other end; and an outer cylinder that is open and has a voice outlet at the other end, and a body with a double body structure is constructed, and the above-mentioned outlet is located between the inner and outer cylinders in the body of the vessel. A cylindrical gap communicating with the above-mentioned gap is secured, and a large number of ventilation holes communicating with the above-mentioned gap are provided on the circumferential surface of the inner cylinder, and a large number of ventilation holes communicating with the above-mentioned gap are provided on at least the curved surface of the blowing part. A silencer characterized by being provided with a ventilation hole. (2) Utility model registration claim No. (1) characterized in that the inner cylinder is loaded with a sound-absorbing material having air permeability.
Silencer as described in section. (3) The silencer as set forth in claim (1) of the utility model registration, characterized in that an intake port of a size that can be closed with a fingertip is provided so as to communicate with the inside and outside of the inner cylinder.