JPH0344517Y2 - - Google Patents

Description

[Detailed explanation of the idea] "Industrial application field" The present invention relates to a sound insulation panel.

``Prior art'' and ``Problems to be solved by the invention'' A honeycomb core is used as a core material, and appropriate intervals are formed on one side of the honeycomb core so that each cell of the honeycomb core communicates with the outside through pores. A conventional sound insulating panel in which a perforated plate having a large number of pores is attached to the honeycomb core, a surface plate is attached to the other side, and a sound insulating material such as glass wool is filled in each cell of the honeycomb core. In the case of noise and other sound waves that enter each cell through the pores, they are diffusely reflected by the sound insulation material, consuming most of their energy, and some of the sound waves that are reflected outside through the pores are Since the energy is consumed due to the phase shift with the sound waves traveling towards the panel, the energy of the sound waves transmitted through the surface plate is attenuated, and a considerable sound insulation effect can be obtained. However, the materials of the perforated plate, surface plate, etc.
Depending on the plate thickness, the perforated plate may vibrate violently due to sound waves transmitted directly to the surface of the perforated plate, and this vibration may be transmitted to the surface plate via the honeycomb core, resulting in a significant loss of sound insulation effect. Ta. Therefore, in order to form a sound insulation panel that can obtain a sound insulation effect suitable for the usage environment in the conventional sound insulation panel with such a configuration, it is necessary to change the materials of the perforated plate, surface plate, etc. There are many restrictions on settings such as thickness, and selection and setting of these constituent members is extremely troublesome.

"Means for Solving the Problem" In view of the above-mentioned circumstances, the present invention was made to solve the above-mentioned problems of the conventional technology. In a sound insulating panel formed by adhering a perforated plate having holes and adhering a surface plate to the other side, and filling each cell of the honeycomb core with a sound insulating material such as glass wool, at least A cushioning material is interposed between the other surface and the top plate.

"Operation" By interposing a buffer material between at least the other side of the honeycomb core and the surface plate, the perforated plate vibrates violently due to the sound waves directly transmitted to the surface of the perforated plate, and this vibration is transmitted to the honeycomb core. Even when the vibrations are transmitted, the shock absorbing material absorbs the vibrations, so there is almost no possibility that the vibration sounds will be transmitted through the surface plate. Therefore, in order to obtain a sufficient sound insulation effect by simply selecting and setting the cushioning material without being affected by the material and thickness of the perforated plate, surface plate, etc., the configuration of the perforated plate, surface plate, etc. It becomes easy to select and set the members, and it becomes extremely easy to form a sound insulating panel suitable for the usage environment and purpose.

"Embodiments" The present invention will be described below based on embodiments shown in the drawings.

In FIG. 1 and FIG. 2, 1 is a sound insulation panel, and this sound insulation panel 1 is constructed as follows. That is, 2 is a honeycomb core that constitutes the core material of the sound insulation panel 1, and this honeycomb core 2
Each cell 2 is made of metal or non-metallic foil material.
The shapes of a, 2a, . . . are substantially regular hexagons. Reference numeral 3 denotes a perforated plate attached to one side of the honeycomb core 2, and this perforated plate 3, when attached to the honeycomb core 2,
A large number of pores 3a, 3a... are bored at predetermined intervals so that at least one or more pores 3a are located corresponding to the open ends of the holes 3a, 2a....

Reference numeral 4 denotes a sound insulating material such as glass wool filled in each cell 2a, 2a, . . . of the honeycomb core 2.

Reference numeral 5 denotes a cushioning material made of an elastic material such as rubber or plastic and formed into a flat plate shape with a predetermined thickness. A surface plate 6 is attached to the surface of the honeycomb core 2, and this cushioning material 5 absorbs vibrations generated by sound waves transmitted to the porous plate 3 and transmitted to the honeycomb core 2, and the vibrations are directly applied to the surface plate. 6.

Since the present invention has the above-described configuration, the perforated plate vibrates violently due to sound waves such as noise directly transmitted to the surface of the perforated plate 3, and this vibration is transmitted to the honeycomb core 2.
Even when the vibration is transmitted to the surface plate 6, this vibration is absorbed by the cushioning material 5, and the vibration is prevented from being directly transmitted to the surface plate 6, so the vibration sound is almost never transmitted through the surface plate 6. do not have.

FIG. 3 shows another embodiment of the present invention, in which a large number of through holes 15 are provided between the perforated plate 3 and the honeycomb core 2 in the same positional relationship as the perforated plate 3.
A cushioning material 15 with holes a, 15a, . . . is interposed therebetween. Therefore, according to this embodiment, the perforated plate 3
The vibration generated in the porous plate 3 is absorbed by the buffer material 15 interposed between the honeycomb core 2 and the honeycomb core 2, so that the vibration is hardly transmitted directly to the honeycomb core. Even if a slight vibration is transmitted to the honeycomb core 2, the vibration is almost completely absorbed by the buffer material 5 interposed between the honeycomb core and the surface plate 6, resulting in a better sound insulation effect. can be obtained.

"Effect of the invention" As detailed above, according to the sound insulation panel according to the invention, vibrations are generated in the perforated plate at least by the buffer material interposed between the other surface of the honeycomb core and the surface plate. In this case, in order to prevent this vibration from being transmitted to the surface plate, the vibration sound is hardly transmitted through the surface plate. Therefore, by simply selecting and setting the cushioning material, a sufficient sound insulation effect can be obtained without being affected by the material and thickness of the perforated plate, surface plate, etc. that make up the sound insulating panel. , it is easy to select and set the components such as the surface plate, and it is extremely easy to form a sound insulating panel that is suitable for the usage environment and purpose.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; Fig. 1 is an exploded perspective view of the main parts of the sound insulation panel, Fig. 2 is a longitudinal cross-sectional view of the main parts, and Fig. 3 is a longitudinal cross-section of the main parts of another embodiment. It is a front view. In the figure, 1 is a sound insulation panel, 2 is a honeycomb core, 2
3 is a cell, 3 is a porous plate, 3a is a pore, 4 is a sound insulating material, 5 and 15 are buffer materials, 15a is a through hole, and 6 is a surface plate.

Claims (1)

[Scope of utility model registration request] A perforated plate having a large number of pores at appropriate intervals is attached to one side of the honeycomb core, and a surface plate is attached to the other side, and glass wool or the like is placed in each cell of the honeycomb core. 1. A sound insulation panel filled with a sound insulation material, characterized in that a cushioning material is interposed between at least the other surface of the honeycomb core and the surface plate.