JPH061032B2 - Sound absorbing wall - Google Patents

Description

Description: [Industrial field of application] The present invention is widely applied to doors of furniture such as lockers and cabinets arranged in offices, and inner wall members used indoors such as partition walls. The present invention relates to a sound absorbing wall body applied to.

[Prior Art] In recent years, steel is often used for interior decoration of buildings and interior equipment of offices for the purpose of non-combustibility and durability.

[Problems to be Solved by the Invention] However, in an indoor environment in which a large amount of a metal surface is exposed to the surroundings, it is disadvantageous in terms of acoustic effect and is a harmful factor in creating a comfortable office space.

Specifically, it is theoretically known that a metal surface is inferior in sound absorption compared to a wood surface based on the property of reflecting sound well, which hinders the quietness of the office and promotes the noise. Is.

The present invention has been made to address such a problem, and can be easily applied to the front surfaces of metal furniture and inner wall members arranged in an office, thereby improving the sound absorbing performance of the wall surface. In addition to having a good appearance, it has a rational structure that can simplify the equipment for manufacturing, and there is no danger of damaging clothes etc. to people moving close and cleaning is also easy. It is intended to provide a sound absorbing wall body that can be used.

[Means for Solving Problems] A sound absorbing wall body newly proposed by the present invention is a three-dimensional louvered three-dimensional louver and a three-dimensional press-molded using a mold common to this front plate. A sound absorbing material is sandwiched between a louvered back plate and a louver, and the front plate is arranged with the ventilation holes of the louver facing downward, and the back plate has the ventilation holes of the louver positioned upward. It is characterized in that the louver of the front plate, which is arranged so as to face inward, bulges inward more than the peripheral portion of the flat plate which faces indoors.

[Operation] In the wall body having such a structure, when the sound echoes from the room to the furniture or the inner wall provided with the wall body, the sound is propagated inward from the ventilation hole formed in the louver of the front plate and the back plate and It is absorbed by the sound absorbing material that is sandwiched between. For this reason, the repeated reflection of the sound from the metal surface can be attenuated at an early stage, and the noise level in the room can be suppressed to a low level.

In addition, a louver is also provided on the back plate that backs up the absorber, and the wall structure in which the ventilation holes are opened in the back plate has a particularly excellent effect in attenuating the sound in the low frequency range that is difficult to be absorbed by the sound absorber. Is known to express. In addition, since the louver of the front plate and the louver of the back plate can be press-molded using a common mold, a punching plate such as a punching plate is separately used as the back plate. It is possible to simplify the manufacturing equipment as compared with the case. Furthermore, since the louver has its ventilation holes facing downward, the louver looks good even when facing the office space or aisle, and the sound-absorbing material inside makes it visible. The troubles associated with Also, since the back plate is arranged so that the ventilation holes of the louver face upward, each louver of the back plate creates a hook portion having pockets inside in a multi-step manner with the door open, A derived effect that a further variation can be added to the storage of goods inside furniture will be obtained.

Moreover, since the louver of the front plate facing indoors is configured to bulge inward more than the peripheral portion of the flat plate, the member protrudes on the surface of the front plate or the sheet metal material The cut is never exposed.

Therefore, even if clothes of a walking person slide on the surface of the front plate, the clothes are not caught by the front plate and are not damaged. In addition, since the front plate, which is easily visible because it is exposed indoors, tends to be cleaned more frequently than the back plate, but if the front plate is set as described above, the surface of the front plate will not be contaminated with cloth or the like. Even in the case of wiping, the cleaning work can be performed smoothly and quickly without catching the cloth or the like.

[Embodiment] The present invention will be described more specifically below based on an embodiment shown in the drawings.

In this embodiment, as a preferred example, the sound absorbing wall body according to the present invention is applied to a door exposed on the front surface of the steel rocker shown in FIG.

The locker L of FIG. 4 is provided with long doors 1 and 1 of a double door type on the front surface thereof, and the doors 1 and 1 are integrally provided with a sound absorbing wall body having a sectional structure as shown in FIG. It is a thing.

The sound absorbing wall body applied to the doors 1 and 1 includes a front plate 2 in which a louver 5 that opens each downward vent hole 6 by a die press is carved in a vertically long manner in the center of the surface, and the front plate 2 A back plate 3 which is additionally provided from the back side also as a reinforcing member, and in which a louver 7 is formed in a portion corresponding to the louver 5 ... The sound absorbing member 4 is made of glass wool, rock wool, or the like and has an appropriate thickness. The louvers 5 of the front plate 2 and the louvers 7 of the back plate 3 are carved by a common die press. The front plate 2 drives the louvers 5 ... 7 ... is stamped outside. Then, the louver 5 of the front plate 2 facing indoors
Are configured to bulge inward from the peripheral portion 2a of the front plate 2 having a flat plate shape.

In the rocker L having the above sound absorbing wall body on the front,
When the sound reverberating in the room propagates inside through the ventilation holes 6 formed in the louvers 5 of the front plate 2, it is absorbed by the sound absorbing material 4 sandwiched between the back plate 3 and the surface thereof. It suppresses the reflection at and suppresses the noise level effectively.

At this time, the sound propagated from the ventilation holes 6 of the front plate 2 to the inside is absorbed by the sound absorbing material 4, but a part that cannot be absorbed by the sound absorbing material 4 passes through the louvers 7 provided on the back plate 3. It is diffused into the storage space inside the locker L through the pores 8. Then, if a part of the sound from the back plate 3 is positively propagated to the interior space of the furniture, the sound in the low frequency range is attenuated particularly early as compared with the case where the back plate 3 does not have the ventilation hole 8. It has been proven effective above. This is because, in general, the sound absorbing material 4 is inferior in the sound absorption ability in the low frequency range where the sound is most prone to sound in the office.
Rather, it is considered that a greater damping effect is exhibited when the sound is diffused in the back space through the sound absorbing material 4.

Further, in this sound absorbing wall body, since the louvers 5 and 7 of the same kind are provided on the front plate 2 and the back plate 3, these can be molded using a common mold, and the manufacturing equipment can be manufactured. It is possible to realize a rational wall structure that can reduce costs by promoting simplification. That is, the sound absorbing wall body according to the present invention can be manufactured by using a common plate material obtained by pressing the louvers 5 and 7 with a sheet material by using a sheet material for the front plate 2 and the back plate 3. This is much more rational and economical than the case where a separate material such as a punching plate is used for providing the back plate 3 with the ventilation holes 8.

Further, since the louvers 7 that open the upward ventilation holes 8 are engraved on the back plate 3 of the doors 1, 1, as shown in FIG. A pocket 9 is formed inside each louver 7, and various portable small articles or articles 10, 11 such as towels can be directly hooked or stored in the pocket 9 by hanging them on a hanger 12. This is convenient for compactly organizing and storing various items.

In the rocker L provided with the sound absorbing wall body according to the present invention, since the louver 5 is formed on the door surface, a louver-like decoration can be achieved at the same time, and the louvers 5 and 7 on the front and back sides can be used to open the door. The original ventilation effect is also achieved from the pores 6 and 8 through the sound absorbing material 3.

Moreover, since the louvers 5 of the front plate 2 facing indoors are configured to bulge inward from the peripheral portion 2a of the flat plate 2, the member on the surface of the front plate 2 is formed. No more protruding or exposing the cut of the sheet metal material. for that reason,
Even if the clothes of a walking human may come into sliding contact with the surface of the front plate 2, the clothes are not caught by the front plate and are not damaged. The front plate 2 exposed indoors is the back plate 3.
Although it tends to be cleaned more frequently than the above, if the front plate 2 is set as described above, even when the surface dirt of the front plate 2 is wiped off by a cloth or the like, the cloth or the like is not caught,
Cleaning work can be performed smoothly and quickly.

As described above, as an example, the case where it is applied to a door of a locker has been described, but the sound absorbing wall body of the present invention can be widely used for doors of furniture and the like, and other than these, a metal surface such as a partition wall. The same can be applied to interiors and interior fixtures that expose the room, and it is effective for absorbing noise in the office while also serving as decoration.

[Effects of the Invention] As described above, the sound absorbing wall body of the present invention is applied to doors of furniture, other interiors, and interior fixtures, and also serves as a louver decoration on the wall surface to achieve a sound absorbing effect, and a quiet office. It will contribute to the realization of the environment.

In this sound absorbing wall body, the front plate and the back plate are provided with louvers that can be molded by a common mold, so that the sound absorbing wall body has a rational wall structure that is easy to manufacture and absorbs sound particularly in the low frequency range. In addition to exhibiting excellent characteristics, it also has the advantage of creating a convenient hooking portion on the back surface of the door, especially when used for furniture doors.

Moreover, since the louver of the front plate facing indoors is configured so as to bulge inward more than the peripheral portion of the flat plate, the surface of the front plate is not covered by clothing of a walking human. Even if the clothes come into sliding contact with each other, the clothes will not be caught on the front plate and damaged. Further, if the front plate is as described above, even when the surface stains of the front plate are wiped off with a cloth or the like, there is no effect of catching the cloth or the like, and the cleaning operation can be performed smoothly and quickly. can get.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of a sound absorbing wall body showing an embodiment of the present invention and corresponds to a sectional view taken along the line AA of FIG. FIG. 2 is a vertical cross-sectional view showing an example of using the back pocket of the sound absorbing wall body of the same embodiment. FIG. 3 is a front view of furniture showing a specific example of application of the present invention. L ... Rocker 1 ... Door 2 ... Front plate 2a ... Peripheral part 3 ... Back plate 4 ... Sound absorbing material 5 ... Louver 6 ... Ventilation hole 7 ... Louver 8 ... Ventilation hole 9 ... Pocket 10, 11 ... Article 12 ... Hanger

Claims (1)

[Claims] 1. A sound-absorbing wall comprising a sound-absorbing material sandwiched between a front plate having a three-dimensional louver and a back plate having a three-dimensional louver press-molded by using a metal mold common to the front plate. The body is a body, and the front plate is arranged with the ventilation holes of the louver facing downwards, and the back plate is arranged with the ventilation holes of the louver facing upwards. Louvers
A sound absorbing wall body characterized in that the sound absorbing wall body is configured to bulge inward from a peripheral portion of the flat plate-shaped front plate.