JP3652665B2 - Sound absorber and sound absorbing wall - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sound absorbing body and a sound absorbing wall.
[0002]
[Prior art]
In a studio, listening room, music room, etc. that are relatively small in size and close to a rectangular parallelepiped, reverberation time of a specific frequency may be long, or coloration may occur at a specific frequency. In order to alleviate such a phenomenon, a pipe resonance type sound absorber as shown in FIG. 5 is considered. Among these, (1) is a sound absorber 21 in which sound absorbing pipes 20 of the same length are continuously arranged, and (2) is a sound absorber 22 in which the length of the sound absorbing pipe 20 is changed.
[0003]
[Problems to be solved by the invention]
However, in the sound absorber as described above, since it was impossible to adjust the resonance frequency according to the acoustic state that changes depending on the size and shape of the target room, it was not possible to adjust the sound absorption after the sound absorber was attached. .
[0004]
The present invention has been made in view of these problems, and an object of the present invention is to provide a sound absorber and a sound absorber capable of adjusting a resonance frequency according to an acoustic state that varies depending on the size and shape of the sound absorber even after being attached to a room. Is to provide a wall.
[0005]
[Means for Solving the Problems]
The gist of the sound absorber for solving the above problems is that sound absorbing pipes closed on one side are continuously arranged adjacent to each other, and in these sound absorbing pipes, a slide that slides along the vertical axis and the vertical axis. provided with a valve, the said slide valve, the operation knob projecting outwardly is provided from a slit provided in the longitudinal direction of the sound absorbing pipe, the slit of the sound absorbing pipe two sealing strips superimposed in the vertical The operation knob is closed from the outer surface and moves while the seal piece is pushed right and left . In addition, the sound absorption pipe includes being arranged in a curved shape.
[0006]
Further, the sound absorbing wall has a space in the wall partitioned by a partition plate into a plurality of sound absorbing chambers, and in each of the sound absorbing chambers , a vertical axis and a slide valve that slides along the vertical axis are provided. the operation knob projecting outwardly is provided from a slit provided in the longitudinal direction of the wall, the slit is closed from the outer surface of the sound absorbing pipe two sealing strips superimposed vertically, horizontally the sealing strip The operation knob moves while being spread out.
[0007]
By changing the effective length of the air column in the sound absorption pipe by sliding the slide valve by the operation knob, the resonance frequency can be freely changed. The resonance frequency can be adjusted according to the acoustic state of the room. A wall capable of adjusting the resonance frequency according to the acoustic state of the room can be formed. Regardless of the size and shape of the room, a single sound absorber or sound absorbing wall can be used for complete sound absorption adjustment.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the sound absorber and the sound absorbing wall of the present invention will be described. First, the sound absorbing body will be described, and then the sound absorbing wall will be described. In the embodiments, the same components are described with the same reference numerals, and only different components are described with different reference numerals.
[0009]
As shown in FIGS. 1 and 2, the sound absorbing body 1 is configured such that a sound absorbing pipe 4 is continuously strung adjacent to a curved plate 3 projecting from upper and lower support plates 2. In these sound absorbing pipes 4, as shown in FIG. 3, a vertical axis 7 is provided between the upper and lower bearings 5, 6, and a slide valve 8 is slidably attached to the vertical axis 7. The slide valve 8 is provided with an operation knob 10 protruding outward from a slit 9 provided in the length direction of the sound absorption pipe 4, and the length of the air column in the sound absorption pipe 4 by the slide of the slide valve 8 by the operation knob 10. Can be changed. In addition, the slit 9 is closed by two seal pieces 11 and 12 that are stacked one above the other so that sound does not leak, and the operation knob 10 can be moved while spreading the seal pieces 11 and 12 left and right. Become. The sound absorber 1 is hung on the wall at the four corners of the room or installed in the wall, but the sound absorber 1 is installed in the wall after adjusting the resonance frequency according to the acoustic state of the room.
[0010]
FIG. 4 shows the sound absorbing wall 13, which is formed on the upper or lower wall of the four corners of the room. The sound absorbing wall 13 is obtained by dividing the gap 15 in the wall 14 into about ten sound absorbing chambers 17 by a partition plate 16 and providing the same slide valve 8 therewith. The slide valve 8 is slidably provided on the longitudinal axis 7 provided in the sound absorbing chamber 17 and is provided with an operation knob 10 protruding outward from a slit 9 provided in the length direction of the sound absorbing chamber. The length of the air column in the sound absorbing chamber 17 can be changed by sliding the slide valve 8 by the operation knob 10. In addition, the slit 9 is closed by two sealing pieces 11 and 12 that are stacked one above the other in the same manner as described above.
[0011]
【The invention's effect】
By changing the effective length of the air column in the sound absorption pipe by sliding the slide valve by the operation knob, the resonance frequency can be freely changed.
[0012]
The resonance frequency can be adjusted according to the acoustic state of the room.
[0013]
It is possible to form an adjustable wall of the resonant frequency corresponding to the acoustic conditions of the room.
[0014]
Regardless of the size and shape of the room, complete sound absorption adjustment can be performed with a single sound absorber or sound absorbing wall.
[0015]
Even after being attached to the room, the resonance frequency can be adjusted in accordance with the acoustic state that changes depending on the size and shape of the room.
[Brief description of the drawings]
FIG. 1 is a front view of a sound absorber.
FIG. 2 is a plan view of the sound absorber.
3 is a cross-sectional view in the length direction of the sound absorbing pipe, (2) is a cross-sectional view taken along line AA in (1), (3) is a cross-sectional view taken along line BB in (1), (4) ) Is a sectional view taken along line CC of (1).
FIG. 4 shows a sound absorbing wall, (1) is a sectional view of the sound absorbing wall, and (2) is a partially cutaway front view of the sound absorbing wall.
FIGS. 5A and 5B are front views of a conventional sound absorbing wall. FIGS.
[Explanation of symbols]
1, 2, 22 Sound absorbing body 2 Support plate 3 Curved plate 4, 20 Sound absorbing pipe 5, 6 Bearing 7 Vertical axis 8 Slide valve 9 Slit 10 Operation knob 11, 12 Seal piece 13 Sound absorbing wall 14 Wall 15 Cavity 16 Partition plate 17 Sound absorption room

Claims (3)

One side is arranged continuously and adjacent sound absorbing pipes of closing, in the these sound-absorbing pipe, a slide valve that slides along a longitudinal axis and said longitudinal axis are mounted on the said slide valve, the sound absorbing pipe An operation knob that protrudes outward from the slit provided in the length direction is provided, and this slit is closed from the outer surface of the sound-absorbing pipe with two seal pieces stacked one above the other, while spreading the seal piece left and right A sound-absorbing body characterized in that the operation knob moves .   The sound absorbing body according to claim 1, wherein the sound absorbing pipes are arranged in a curved shape. Void portion in the wall is partitioned into a plurality of sound absorbing chambers by a partition plate, these sound absorption chamber, and a slide valve that slides along a longitudinal axis and said longitudinal axis are mounted on the said slide valve, the wall of An operation knob that protrudes outward from the slit provided in the length direction is provided, and this slit is closed from the outer surface of the sound absorbing pipe by two seal pieces stacked one above the other. A sound-absorbing wall characterized by the movement of the knob .

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