JP2006133639A - Acoustic device provided on surface section facing inside of room - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an acoustic device which prevents spreading of sounds to an adjacent room or the like and efficiently generates good quality sounds. <P>SOLUTION: A vibration actuator 11 is arranged at the room outer side of a surface material (an inspection port cover 3 of a bathroom ceiling, for example) facing the inner side of a room and a sound shielding material 15 is arranged to cover the surface material 3. For the sound shielding material 15, a sound absorbing material such as sponge or the material, which is made by alternatively laminating vibration proof rubber and a hard plate material so that vibration is hardly transmitted, can be used. By the sound shielding material 15, a region in which the vibrating region of the surface material 3 does not contact with the outer surface of the room can be formed. Thus, sound is shielded for the outer surface of the room and no sound is leaked out to the adjacent room or the like. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an acoustic device in which a vibration actuator is provided on a face material facing in a room and the outdoor side of the face material is covered with a sound insulating material.

  Recently, an audio device has been installed in the bathroom, and you can enjoy listening to music on cassette tapes and CDs, listening to music and news on AM and FM radio broadcasts, listening to audio signals on TV, etc. while bathing. There is a way. As known techniques for enjoying sound information in such a bathroom, the inventions described in Patent Document 1 and Patent Document 2 are known.

In the invention described in Patent Document 1, a speaker is installed on the back side of the inspection port lid of the inspection port provided on the ceiling of the bathroom, and sound information such as music is generated in the bathroom through the inspection port lid. In addition, in the invention described in Patent Document 2, a vibration element is installed on the back side of the niche part formed on the side wall part near the bathroom inspection port, and the structural member that constitutes the ceiling of the niche part by the vibration element is provided. It vibrates and emits sound into the bathroom.
Japanese Patent No. 3528767 Utility Model Registration No.2522142

  However, the invention described in Patent Document 1 has the drawback that the inspection palate itself vibrates by the speaker, propagates through the space behind the ceiling and spreads outside the bathroom, and the sound leaks from the adjacent room. there were. In addition, the vibration is transmitted from the diaphragm to other members constituting the bathroom, and the sound leaks from the adjacent room. In particular, in the case of apartment houses, the sound easily leaks into the adjacent room, giving an unpleasant feeling.

  On the other hand, in Patent Document 2, a vibrator element is attached to the back side of a niche part formed on a side wall part in the vicinity of the inspection port, and a component constituting the ceiling of the niche part is vibrated to form a sounding body. However, the vibration of the constituent members constituting the ceiling may propagate to the adjacent room and the sound may leak out.

  The present invention is an improvement of the above-mentioned problems in view of the above-described problems, and provides an acoustic device that can prevent the diffusion of sound into an adjacent room and the like and can efficiently generate a high-quality sound. It is something to be done.

  The means of claim 1 employed by the present invention in order to solve the above problems includes a face material to be a diaphragm facing the room and a vibration actuator that vibrates the face material disposed outside the face material. And a sound insulating material provided on a surface portion facing the room, wherein a sound insulating material covering the face material is disposed outside the face material.

  The means of claim 2 adopted by the present invention is provided in a room-facing surface portion according to claim 1 in which a vibration isolating material is interposed between the indoor structural member adjacent to the face material and the face material. It is an acoustic device.

  The means of Claim 3 which this invention employ | adopted is the audio equipment provided in the surface part which faces the room of Claim 1 or 2 with which space is formed between the face material and the sound insulation material.

  According to a fourth aspect of the present invention, the sound insulating material includes an outer shell that forms the outside and is not easily deformed, and a vibration isolating material is provided between the indoor constituent member adjacent to the outer shell and the outer shell. It is the audio equipment provided in the surface part which faces the room of Claim 3 interposed.

  According to the first aspect of the present invention, the vibration actuator is disposed outside the face material facing the room, and the sound insulating material is disposed outside the face material so as to cover the face material. As the sound insulating material, a sound absorbing material such as a sponge or a member in which vibrations are alternately laminated and a hard plate material are hardly transmitted can be considered. With this sound insulating material, the sound emitted from the face material to the outside of the room can be sound-insulated, and the sound does not propagate to the adjacent room and leak out.

  In the invention of claim 2, the vibration isolator is interposed between the indoor structural member adjacent to the face material and the face material. For this reason, even when the face material is vibrated by the vibration actuator to generate sound from the face material into the room, the vibration of the face material is blocked by the vibration isolating material. Thereby, the vibration of the indoor structural member adjacent to the face material is suppressed, and the indoor structural member is not propagated to the adjacent chamber or the like and the sound does not leak out.

  In the invention of claim 3, a space is formed between the face material and the sound insulating material. Thereby, the space becomes a space for resonance, the face material can be vibrated efficiently, and a high-quality sound can be generated.

  According to a fourth aspect of the present invention, the sound insulating material includes an outer shell that forms the outside and is not easily deformed, and a vibration isolating material is interposed between the indoor constituent member adjacent to the outer shell and the outer shell. ing. Also in this case, the vibration of the vibration actuator of the face material is interrupted by the vibration isolating material, the transmission of the vibration to the adjacent indoor constituent member is interrupted, and no sound leaks out.

  The configuration of the present invention will be described below based on the embodiment of the invention shown in the drawings. 1 and 2 relate to a first embodiment of the present invention, and show a case where an inspection mouth cover (face material) 3 of a bathroom ceiling 1 of a unit bath is used as a diaphragm. FIG. 1A is a bottom view of the inspection port lid 3 disposed in the inspection port 2 of the bathroom ceiling 1 as viewed from below the bathroom, and FIG. FIG. 2 is a vertical cross-sectional view for explaining the mounting procedure of the inspection port lid 3.

  As shown in the figure, the bathroom ceiling 1 of the first embodiment is provided with a reinforcing material 5 made of gypsum board on the back side of a steel plate 4 inside the bathroom. In the portion of the inspection port 2, the upright piece 4 </ b> A of the steel plate 4 bent in an L-shaped cross section covers the inner peripheral end surface of the reinforcing member 5. The inspection port lid 3 attached to the inspection port 2 is formed by bending a steel plate, and is formed with locking flanges 6 that come into contact with and join the upper surface of the reinforcing member 5 at the four peripheral edges. The recessed part 7 is formed in the center area | region of the bathroom outer side (back side), and has comprised cross-sectional hat shape (dish shape) as a whole. On the lower surface side of the inspection port lid 3, a locking piece 8 for preventing lifting is rotatably attached.

  Thus, in this embodiment, the vibration isolator 9 such as soft rubber is attached to the portion where the flange 6 of the inspection port lid 3 is joined to the upper surface of the reinforcing member 5 and the end surface of the upright steel plate 4A. ing. A vibration control plate 10 and a vibration actuator 11 are attached to the concave portion 7 outside the bathroom of the inspection mouth lid 3. The vibration control plate 10 is for suppressing the vibration of the inspection port lid 3 from continuing indefinitely, and is made of a synthetic resin or a foam material. The vibration actuator 11 only needs to output a sound information signal as mechanical vibration. For example, an exciter using a voice coil, a giant magnetostrictive actuator, an actuator using a piezoelectric vibrator, or the like. Products are known.

  1 and 2 simply show the external appearance when an exciter is used. As shown in the figure, the exciter vibration actuator 11 has a plate-like yoke with a downwardly recessed portion on the upper side of the main body casing, a magnet is attached in the recessed portion, and further on the outer peripheral side thereof. The bobbin is fitted. A voice coil is wound around the outer peripheral surface of the bobbin, and a vibration output unit 12 is connected and fixed to the lower end surface of the bobbin. The vibration output unit 12 is in contact with and joined to the back side of the inspection port lid 3. It is attached. The vibration actuator 11 is connected to a sound information source such as a CD player, a radio, or a television via a wiring 13 through which a sound information signal is sent and a connector 14 in the middle of the wiring.

  Further, a sound insulating material 15 such as a sponge is attached to the back surface side of the inspection port lid 3 so as to straddle the flanges 6 on the four peripheral edges, and the space 16 of the concave portion 7 constituting the vibration region is an outer surface of the bathroom (bathroom). It is blocked so that it is not connected to the outer space area. As the sound insulating material 15, in addition to a sponge material, a material molded from a soft material such as a foam material, rubber, or elastomer can be used. The sound insulating material 15 may be a laminate of the soft material such as sponge, foam material, rubber, or elastomer and a hard plate material such as hard board alternately.

  Next, a usage mode of the acoustic apparatus configured as described above will be described. The sound generation principle of the exciter is that when a sound information signal flows from the voice output section of a CD player, radio, television, etc. to the voice coil, the bobbin moves with the voice coil according to its strength, and the vibration on the tip side of the bobbin The output unit 12 is vibrated, and the vibration output unit 12 vibrates the inspection opening lid 3. At this time, the vibration isolator 9 disposed on the lower surface side of the flange 6 prevents the vibration of the inspection port lid 3 from being transmitted to other members constituting the ceiling 1, wall surface constituting members, and the like. Therefore, the ceiling 1 and the wall surface constituent members do not vibrate greatly, and almost no sound is generated from the ceiling 1 or the wall surface structural members. That is, only the inspection mouth cover 3 is used as a diaphragm, and sound information such as music is transmitted into the bathroom by pronunciation from only the inspection mouth cover 3.

  On the back side of the inspection port lid 3, a space 16 that constitutes a vibration region of the recess 7 in which the vibration actuator 11 is mounted is blocked from the bathroom outer surface by a sound insulating material 15. Therefore, the sound generated in the space 16 constituting the vibration region is absorbed by the sound insulating material 15, and propagates through the space behind the ceiling and does not propagate to the adjacent room.

  Furthermore, efficient transmission of sound is possible by using only the inspection port cover 3 as a diaphragm. That is, since the vibration plate area that can be vibrated by one vibration actuator 11 is limited, in order to efficiently transmit the vibration of the vibration actuator 11, the surface material should be limited to a limited area. Is good. In this embodiment, only the inspection palate 3 is vibrated in that sense. At this time, by pressing the vibration output portion 12 of the vibration actuator 11 against the inspection port lid 3 with the sound insulating material 15 such as sponge, vibration is transmitted from the vibration output portion 12 without waste.

  FIG. 3 relates to the second embodiment of the present invention. The sound insulating material 15 according to the first embodiment is formed into a box shape having an opening on the bottom side, and the space 16 is resonated. It is also used as a space (enclosure). When the space 16 is also used as an enclosure, it is conceivable to open a bass reflex duct that has a particularly low-frequency expansion effect on the outdoor surface side. In the second embodiment, the sound generated in the resonance space 16 is expanded, and more efficient sound generation is possible. Other configurations and operational effects are the same as those of the first embodiment.

  FIG. 4 relates to a third embodiment of the present invention. Instead of the sound insulating material 17 in the second embodiment, a sound absorbing material 18 is provided on the inner peripheral surface side, and the outer peripheral surface side is deformed. A sound insulation material having a double structure provided with a hard outer shell 19 is used. Since there is a double sound insulation effect, the sound insulation effect is more excellent. In this embodiment, the vibration isolator 20 is also provided on the upper surface side of the flange 6 of the inspection port lid 3. Other configurations and operational effects are the same as those of the first and second embodiments.

  FIG. 5 relates to a fourth embodiment when the present invention is applied to the wall surface 21. FIG. 4A is a cross-sectional view of the wall surface 21 and FIG. In this embodiment, the opening 22 is formed in the wall surface 21 made of the steel plate 4 and the reinforcing material 5, and the end plate portion 23 is formed by bending the steel plate 4 facing the opening 22 to the back side of the wall. The support piece 25 of the opening lid 24 is formed by bending the edge inward. As in the case of the inspection port lid 3, the opening lid 24 is formed with a locking flange 26, and a recess 27 is formed in the central area on the other outside (rear side) of the bathroom. (Dish).

  The vibration control plate 10 and the vibration actuator 11 are attached to the recess 27 outside the bathroom of the opening lid 24. The vibration control plate 10 is for suppressing the vibration of the opening lid 24 from continuing indefinitely, and is made of a synthetic resin or a foam material. The vibration actuator 11 only needs to output a sound information signal as mechanical vibration. For example, an exciter using a voice coil, a giant magnetostrictive actuator, an actuator using a piezoelectric vibrator, or the like. Products are known. The drawings simply show the appearance when an exciter is used. The structure of this exciter is as described above.

  A box-shaped sound insulating material 28 having an opening on the front side is attached to the back side of the opening lid 24. The sound insulating material 28 is fitted and mounted in the space 29 of the recess 27 that constitutes the vibration region, and the space 29 is blocked from being connected to the bathroom outer surface (space region outside the bathroom) and not continuous. As the sound insulating material 28, a material molded from a soft material such as a foam material, rubber, or elastomer can be used in addition to the sponge material. The sound insulating material 28 may be one in which the soft material such as sponge, foam material, rubber, or elastomer and a hard plate material such as hard board are alternately laminated.

  As shown in FIG. 5B, the opening lid 24 is attached to the wall surface 21 by fitting and attaching the entire opening lid 24 to the opening portion 22 of the wall surface 21, and attaching a vibration isolating material 30 such as soft rubber. The flange 26 may be fastened to the support piece 25 of the steel plate 4 with a screw 31 or the like. In addition, what is necessary is just to arrange | position the caulking material 32 between the steel plate 4 of the wall surface 21 inside a bathroom, and the steel plate 4 of the opening lid | cover 24 as needed, and to prevent the water leaking out of a bathroom. The effects of preventing sound leakage to the adjacent room are the same as those in the above embodiments.

FIG. 1A relates to the first embodiment of the present invention, and FIG. 1A is a bottom view of an inspection port lid arranged in an inspection port on a bathroom ceiling as viewed from below in the bathroom, and FIG. It is X-ray sectional drawing. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view for explaining a mounting procedure of an inspection port lid according to a first embodiment of the present invention. It concerns on the 2nd Embodiment of this invention, and is a longitudinal cross-sectional view of the inspection port part of a bathroom ceiling. It is a longitudinal cross-sectional view of the inspection opening part of a bathroom ceiling which concerns on the 3rd Embodiment of this invention. FIG. 4A is a cross-sectional view of a wall surface, and FIG. 4B is an exploded cross-sectional view according to a fourth embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Ceiling, 2 ... Inspection port, 3 ... Inspection port lid, 4 ... Steel plate, 5 ... Reinforcing material, 6 ... Inspection port lid flange, 7 ... Recessed part, 9 ... Anti-vibration material, 11 ... Actuator for vibration, 12 ... Vibration output part 15 ... Sound insulation material, 16 ... Space

Claims (4)

  In a sound device including a face material that serves as a diaphragm facing the room and a vibration actuator that vibrates the face material disposed outside the face material, a sound insulating material that covers the face material is provided on the face material. An acoustic device provided on a room-facing surface portion, which is disposed outside the room.   The acoustic device provided on the room-facing surface portion according to claim 1, wherein a vibration isolating material is interposed between the indoor structural member adjacent to the face material and the face material.   The sound apparatus provided in the surface part which faces a room according to claim 1 or 2, wherein a space is formed between the face material and the sound insulating material. The room according to claim 3, wherein the sound insulating material includes an outer shell that forms the outside and is not easily deformed, and a vibration isolating material is interposed between the indoor constituent member adjacent to the outer shell and the outer shell. An acoustic device provided on the surface to be used.

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