JP2008271429A - Interior decoration panel for sound output with sound generating function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily fit and remove an interior decoration plate for sound output by preventing an end portion of the interior decoration plate at a circumference of an opening part from being broken when the interior decoration for sound output is fitted or removed. <P>SOLUTION: The interior decoration panel A for sound output is composed of an external frame 1 fitted to the opening part B on an interior decoration surface N and an interior decoration material 2 for sound output. A fitting means 4 is provided on an internal surface of the external frame 1. The interior decoration material 2 for sound output comprises an internal frame 6, an interior decoration plate 5 for sound output, a back plate 7, and an exciter 8 which vibrates the interior decoration plate 5 for sound output to generate a sound in a room. A fitted means 9 is provided to the internal frame 6 of the interior decoration material 2 for sound output. The internal frame 6 of the interior decoration material 6 for sound output is fitted detachably in the external frame 1, and the fitting means 4 is provided detachably with the fitted means 9. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a sound output interior panel having a sound generating function for constituting a part of an interior surface of a room.

  Conventionally, as an inspection lid provided on a ceiling, a vibration actuator is provided on the back surface of the face plate of the inspection lid, and a sound is generated in the room by vibrating the face plate of the inspection lid with the vibration actuator. Is known by.

  In the conventional example shown in Patent Document 1, an inspection lid having a cross-sectional hat shape as a whole and provided with flanges on the four peripheral edges is formed by bending a steel plate. A vibration actuator is provided on the back surface, and a sound insulating material is placed on the flange of the inspection lid having a cross-sectional hat shape as a whole. When installing the inspection lid, the inspection lid is placed at the ceiling opening and the flange of the inspection lid is mounted directly on the ceiling material around the ceiling opening. The end of the ceiling material around the opening of the ceiling is easily damaged by the lid, and even when attaching or removing the inspection lid, it coincides with the diagonal line of the square opening in plan view with the inspection lid upright The inspection lid is tilted so that the inside of the opening is passed upward, and then the inspection lid is leveled at a position above the opening and rotated by 45 ° on the horizontal plane so that the flange of the inspection lid is attached to the ceiling opening. It is necessary to place it on the surrounding ceiling material, and it is also necessary to remove it in the reverse procedure. For this reason, it is troublesome to attach and remove the inspection lid, and it is necessary to perform the above installation after wiring to the vibration actuator at a high place such as the ceiling, which makes the installation work more complicated. was there.

In addition, in the above conventional example, there is a problem that the ceiling material constructed so that the inspection lid can be supported on the ceiling material around the opening cannot be applied to the ceiling in which the ceiling material is constructed. Cannot be applied to any kind of ceiling.
JP 2006-133639 A

  The present invention has been invented in view of the above-described conventional problems, and in attaching and removing the sound output interior material, the sound output interior material is directly attached to the end of the interior material around the opening of the interior surface. It can be installed and removed without hitting the door, so that the edge of the interior material around the opening that is easily damaged is not damaged, and the sound generation function that makes it easy to install and remove the interior material for sound output An object of the present invention is to provide an interior panel for sound output provided.

  In order to solve the above-mentioned problems, an interior interior structure having a sound generation function according to the present invention is a sound output interior panel A that constitutes a part of an interior surface N of a building and has a sound generation function. The sound output interior panel A includes an outer frame 1 attached to the opening B of the interior surface N and a sound output interior material 2 detachably fitted into the outer frame 1. A mounting means 4 is provided on the inner surface, and the sound output interior material 2 can be freely fitted into the outer frame 1, and a sound output interior plate 5 around which the inner frame 6 is mounted. In the space surrounded by the back plate 7 fixed to the back surface of the inner frame 6 so as to cover the portion surrounded by the inner frame 6 on the back side, the sound output interior plate 5, the inner frame 6 and the back plate And is attached to the back surface of the sound output interior plate 5 to vibrate the sound output interior plate 5 to generate sound in the room. 8, and a mounting means 9 is provided on the inner frame 6 of the sound output interior plate 5, and the inner frame 6 of the sound output interior material 2 is detachably fitted into the outer frame 1 and the mounting means 4. The attachment means 9 is detachably attached.

  With such a configuration, the outer frame 1 is attached to the opening B of the interior surface N, the sound output interior material 2 is detachably fitted into the outer frame 1, and the attachment means 9 is attached to the attachment means 4. Can be attached detachably, so that the interior material 2 for sound output, which is an interior material that generates sound, can be attached as an interior material for constituting the interior surface N. The sound output interior plate 5 constituting a part of N can be vibrated to generate sound toward the room. Since the sound output interior material 2 is detachably attached to the outer frame 1 attached to the opening B of the interior surface N, the end of the surrounding ordinary interior material 3 is protected by the outer frame 1, When attaching or removing the output interior material 2, the end of the surrounding ordinary interior material 3 is not damaged by the sound output interior material 2. Further, since the outer frame 1 that does not need to be removed after the attachment is attached to the opening B of the interior surface N, and the sound output interior material 2 that needs to be removed for maintenance, inspection, etc. is attached to the outer frame 1, the outer frame 1 There are no restrictions on the installation of the machine, and various installations at various sites are possible.

  Moreover, it is preferable to provide the recessed part 10 opened to the outer side for fitting the edge part of the normal interior material 3 in the outer surface part of the outer frame 1.

  By setting it as such a structure, the outer frame 1 and the normal interior material 3 can be attached by fitting the edge part of the normal interior material 3 in the recessed part 10 of the outer frame 1.

  In addition, a placement portion 11 for placing the end portion of the normal interior material 3 protruding outward is provided at the lower portion of the outer frame 1 and placed on the placement portion 11 at the upper portion of the outer frame 1. It is preferable to provide a pressing portion 12 that is movable up and down for pressing the upper surface of the end portion of the normal interior material 3 from above.

  By setting it as such a structure, even if the thickness of the edge part of the normal interior material 3 differs, it can attach reliably.

  Further, bearing protrusions 13 project from the longitudinal ends of a pair of inner surfaces of the outer frame 1 facing each other, and U-shaped grooves that open to the bearing protrusions 13 in the back and inward of the outer frame 1. 14 and a groove 15 having a diameter larger than the groove width of the U-shaped groove 14 in communication with the U-shaped groove 14 at the back of the U-shaped groove 14. A latch receiver 16 is provided on the inner surface of the pair of inner surfaces that are away from the portion where the U-shaped groove 14 is provided, of the other end in the longitudinal direction of the pair of inner surfaces or the other pair of inner surfaces of the inner surface of the outer frame 1. A shaft 17 is projected outwardly from one longitudinal end of a pair of opposed outer surfaces of the four outer surfaces of the frame 6, and parallel to the longitudinal direction of the side surface of the inner frame 6 projecting the shaft 17. Cut portions 18 are provided on both side surfaces of the shaft so that the dimension between the cut portions 18 on both sides is smaller than the diameter of the shaft 17, and the diameter of the shaft 17 is The groove width of the inner frame 6 is set to be larger than the groove width of the letter-shaped groove 14 and smaller than the diameter of the bearing groove 15 and the dimension between the cut portions 18 of the shaft 17 is smaller than the groove width of the U-shaped groove 14. A latch 19 is provided on the outer surface of the pair of opposed inner surfaces in the longitudinal direction or the outer surface of the other pair of opposed outer surfaces of the inner frame 6 that is away from the portion where the shaft 17 is provided. Both the cut portions are U-shaped by positioning the inner frame 6 so as to protrude forward of the outer frame 1 so that the longitudinal direction of the outer surface provided with the six shafts 17 intersects the longitudinal direction of the outer frame 1. The shaft is rotatably supported in the bearing groove 15 while being inserted into the bearing groove 15 so as to face both inner surfaces of the groove 14, and the latch 19 in a state where the inner frame 6 is fitted in the outer frame 1. In a state where the inner frame 6 is fitted into the outer frame 1. It is preferable that the cut portion 18 is set to be non-parallel with the insertion direction of the U-shaped groove 14.

  With this configuration, when mounting the sound output interior material 2 to the outer frame 1, the shaft 17 is inserted into the bearing groove 15 at the back of the U-shaped groove 14 to remove the sound output interior material 2. Wiring and the like are performed while temporarily supported on the frame 1, and then the sound output interior material 2 is rotated around the shaft support portion of the bearing groove 15 of the shaft 17 to rotate the inner frame of the sound output interior material 2. 6 is detachably fitted to the outer frame 1 and the latch 19 is detachably locked to the latch receiver 16 so that the sound output interior material 2 can be easily attached to the outer frame 1. Here, when inserting the shaft 17 into the U-shaped groove 14, the shaft 17 is inserted into the U-shaped groove 14 so that the cut portion 18 is parallel to the insertion direction of the U-shaped groove 14. The shaft 17 can be easily inserted into the bearing groove 15 at the back of the groove. On the other hand, when the sound output interior material 2 is rotated and the inner frame 6 is fitted into the outer frame 1, the cut portion 18 of the shaft 17. Is not parallel to the insertion direction of the U-shaped groove 14, so that the shaft 17 is disengaged from the bearing groove 15 in a state where the interior member 2 for sound output is rotated and the inner frame 6 is fitted in the outer frame 1. There is no. Moreover, when removing, the latch 19 is disengaged from the latch receiver 16 and the sound output interior material 2 is rotated in the reverse direction, and the shaft 17 is parallel to the insertion direction of the U-shaped groove 14. By doing so, the shaft 17 can be easily extracted from the U-shaped groove 14.

  In the present invention, as described above, the sound output interior panel is composed of the two members of the outer frame and the sound output interior material that is detachably fitted into the outer frame. When installing and removing the sound, the interior material for sound output should not directly hit the edge of the ordinary interior material with the outer frame protecting the edge of the ordinary interior material around the interior opening. The end of the interior material around the opening that is easily damaged is not damaged. Further, since the inner frame around the sound output interior material is fitted into the outer frame by fitting, the sound output interior material can be easily attached and detached.

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings.

  The interior surface N of a building such as a ceiling surface, a wall surface, and a floor surface is configured by arranging a plurality of interior materials such as a ceiling material, a wall material, and a floor material, but a plurality of interiors for configuring the interior surface N In the present invention, a normal interior material 3 that does not generate sound and a sound output interior panel A having a sound generation function are used in the present invention, and most of the interior surface N is composed of the normal interior material 3. A sound output interior panel A is provided as an interior material constituting a part of the interior surface N.

  In the embodiment shown in the accompanying drawings, the interior surface N is an example of a ceiling surface, the ordinary interior material 3 is an ordinary ceiling material, and the audio output interior panel A is an example of an audio output ceiling panel. Of course, it may be a wall surface or a floor surface.

  The sound output interior panel A includes a rectangular outer frame 1 and a sound output interior material 2 that is detachably fitted into the outer frame 1.

  The outer frame 1 has a rectangular shape and is disposed and attached to the opening B of the interior surface N. When the outer frame 1 is attached, the outer frame 1 is directly fixed to the ordinary interior material 3 around the opening B. Install it, or fix it directly to the ground structure material such as beams, field edges, pillars, joists, etc. with screws, nails or adhesives, or attach the brackets to the ground structure materials such as beams, field edges, pillars, joists, etc. It is attached via a connecting member.

  Although each embodiment shown in the attached drawings shows an example in which it is directly fixed and attached to the ordinary interior material 3 around the opening B, it is not limited to this.

  In each embodiment shown in FIGS. 1 and 12, a mounting portion 11 for mounting the end of the normal interior material 3 protruding outward is provided at the lower portion of the outer frame 1, and the outer frame 1 is provided with a pressing portion 12 that is movable up and down to press the upper surface of the end portion of the ordinary interior material 3 placed on the placing portion 11 from above. The pressing part 12 is comprised by the scissors metal fitting 12a. The scissor fitting 12 a is configured by screwing a screw shaft 12 c into a fitting main body 12 b fixed to the upper surface portion of the outer frame 1 so as to be movable up and down, and on the mounting portion 11 of the outer frame 1. In a state where the screw shaft 12c is turned, the pressing plate 12d at the lower end of the screw shaft 12c is provided at the end of the ordinary interior material 3 (in the embodiment shown in FIGS. 1 and 12, the end of the ordinary ceiling material 3 is provided). The edge 23) is pressed and attached to the upper surface so as to be sandwiched from above and below. In this embodiment, even if the vertical height of the end portion of the normal interior material 3 varies depending on the site, it can be reliably attached.

  Further, in the embodiment shown in FIGS. 13 and 14, a recess 10 that opens outward is provided on the outer surface of the outer portion of the outer frame 1 for fitting the end of the normal interior material 3. The end portion of the ordinary interior material 3 made of a plate material such as a kenaf plate, a plywood plate, a metal plate such as an iron plate or aluminum, a rock wool plate or a gypsum board is fitted and attached. Here, as in the embodiment shown in FIG. 13, an inner recess 21 is provided on the inner surface of the outer frame 1, and a hole 22 is provided from the groove back to the outer surface of the inner recess 21. The fixing member 20 may be inserted and fixed to the ordinary interior material 3, or the end of the ordinary interior material 3 may be fitted into the recess 10 and adhered with an adhesive 29 as shown in FIG. 14.

  On the inner side surface of the outer frame 1 that is attached to the opening B of the interior surface N as described above, the attachment means 4 as described later is provided.

  The sound output interior material 2 that is detachably fitted in the outer frame 1 includes an inner frame 6 that can be freely fitted in the outer frame 1, and a sound output interior plate 5 that is attached to the periphery of the inner frame 6. The space surrounded by the back plate 7 fixed to the back surface of the inner frame 6 so as to cover the portion surrounded by the inner frame 6 on the back side, the sound output interior plate 5, the inner frame 6, and the back plate 7. And an exciter 8 that is attached to the back surface of the sound output interior plate 5 and vibrates the sound output interior plate 5 to generate sound in the room.

  The inner frame 6 is provided with attached means 9 as will be described later which is detachable from the attaching means 4 provided on the outer frame 1.

  The sound output interior plate 5 is made of kenaf plate, plywood, other wooden plate, iron plate, aluminum plate or other metal plate, rock wool plate, gypsum board, etc., and an exciter 8 such as an exciter is provided on the back. . When the sound output signal is input to the exciter 8, the sound output interior plate 5 as a vibration plate is directly vibrated to generate sound, music, and sound toward the room.

  Next, an embodiment of the attaching means 4 and the attached means 9 will be described.

  In the embodiment shown in FIG. 2 to FIG. 8, bearing protrusions 13 protrude from the longitudinal ends of a pair of inner surfaces of the outer frame 1 facing each other. The bearing protrusion 13 is formed with a U-shaped groove 14 that opens to the back (upward because it is described in the figure as an example of the ceiling) and to the inside of the outer frame 1. A bearing groove 15 having a diameter larger than the groove width of the U-shaped groove 14 is formed at the lower end portion of the U-shaped groove 14 so as to communicate with the U-shaped groove 14. Further, the other inner surface of the outer frame 1 in the longitudinal direction of the pair of opposed inner surfaces or the inner surface of the other pair of inner surfaces of the outer frame 1 away from the portion where the U-shaped groove 14 is provided. The latch receiver 16 is provided with a latch hole 16a. In the present embodiment, the mounting means 4 is constituted by the U-shaped groove 14 and the latch receiver 16 in which the groove depth is the bearing groove 15.

  A shaft 17 protrudes outwardly from one longitudinal end of a pair of outer surfaces facing each other among the four outer surfaces of the inner frame 6. Cut portions 18 are provided by cutting both side surfaces of the shaft 17 parallel to the longitudinal direction of the side surface of the inner frame 6 projecting from the shaft 17. The cut portions 18 on both sides are parallel to the longitudinal direction of the pair of outer surfaces of the inner frame 6 provided with the shaft 17.

  The dimension between the cut portions 18 on both sides of the shaft 17 is set smaller than the diameter of the shaft 17. Further, the diameter of the shaft 17 is set larger than the groove width of the U-shaped groove 14 and smaller than the diameter of the bearing groove 15, and the dimension between the cut portions 18 of the shaft 17 is set larger than the groove width of the U-shaped groove 14. Is also set small.

  A latch 19 is provided on the outer surface of the inner frame 6 on the outer surface of the pair of opposed inner surfaces in the longitudinal direction or on the outer surface of the other pair of opposed outer surfaces of the inner frame 6 away from the portion where the shaft 17 is provided. It is provided.

  The latch 19 is, for example, as shown in FIG. 8, and the latch 19 is disposed in a latch case 25 fixed to the back side of the inner frame 6. One end of the latch 19 is rotatably supported by the latch case 25, and a latching projection 19a having one inclined surface is provided on the other end of the latch 19, and the latching projection is provided. The portion 19a can be protruded from the first window portion 25a provided in the latch case 25, and the locking projection 19a is moved outward from the first window portion 25a with respect to the latch 19 by the spring 26 housed in the latch case 25. The spring force in the protruding direction is given.

  The latch 19 is further provided with a release protrusion 19b. The release protrusion 19b can be protruded and retracted from a second window 25b provided in the latch case 25, and the locking protrusion 19a is provided in the first window 25b. The release protrusion 19b protrudes from the second window portion 25b in a state protruding from the inner frame, and corresponds to the lower position of the portion protruding from the second window portion 25b of the release protrusion 19b. 6 is provided with an operation hole portion 27. A jig such as a screwdriver is inserted through the operation hole portion 27 and the release projection 19b is pushed in, so that the latch 19 is rotated against the spring 26. The locking projection 19a is pulled in by moving. In the present embodiment, the mounting means 9 is constituted by the shaft 17 and the latch 19.

  In order to detachably attach the inner frame 6 of the outer peripheral portion of the sound output interior material 2 to the outer frame 1 attached to the opening B of the interior surface N, the following is performed.

  First, as shown in FIG. 2, the inner frame 6 protrudes toward the front of the outer frame 1 so that the longitudinal direction of the outer surface provided with the shaft 17 of the inner frame 6 intersects the longitudinal direction of the outer frame 1. In this state, the inner frame 6 is moved to the outer frame 1 side as indicated by the arrow in FIG. 2, and both the cut portions 18 of the shaft 17 are moved to the U as shown in FIGS. 5 (a) → (b) → (c). The shaft 17 is fitted into the bearing groove 15 at the back of the groove by being inserted into the bearing groove 15 so as to face both inner surfaces of the letter-shaped groove 14. This is the state of FIG. 3, which is a state in which the inner frame 6 is temporarily supported on the outer frame 1.

  With the inner frame 6 temporarily supported, wiring work or the like to the exciter 8 provided on the sound output interior plate 5 is performed (connection between the exciter 8 and the wiring passing through the space behind the normal interior material 3). I do). Thereafter, by rotating the sound output interior material 2 as indicated by the arrows in FIG. 3, the inner frame 6 of the outer peripheral portion of the sound output interior material 2 is fitted into the outer frame 1, and the latch 19 is locked. As shown in FIG. 4, the sound output interior material 2 is detachably attached to the outer frame 1 by detachably locking the portion 19 a in the locking hole 16 a of the latch receiver 16.

  In this attached state, when the sound output interior material 2 is rotated and the inner frame 6 is fitted into the outer frame 1, the cut portion 18 of the shaft 17 is formed in the U-shaped groove 14 as shown in FIG. Therefore, the shaft 17 does not come off the bearing groove 15 in a state where the sound output interior material 2 is rotated and the inner frame 6 is fitted in the outer frame 1.

  On the other hand, for maintenance and inspection of the exciter 8, a jig such as a screwdriver is inserted from the operation hole 27 and the release protrusion 19 b is pushed to rotate the latch 19 against the spring 26. Then, the locking projection 19a is pulled out from the locking hole 16a and then brought into the state shown in FIG. 3 for maintenance and inspection. When it is desired to remove and inspect, in the state of FIG. 3, the cut portion 18 of the shaft 17 is parallel to the insertion direction of the U-shaped groove 14 as shown in FIG. It can be extracted from the letter-shaped groove 14.

  In the above embodiment, an example in which a jig such as a screwdriver is inserted from the operation hole 27 and the release protrusion 19b is pushed in is shown, but the operation lever 30 is attached to the inner frame 6 as shown in FIGS. The lower end of the operation lever 30 faces the operation hole 27 or protrudes downward from the lower surface of the inner frame 6, and the release protrusion 19 b is pushed by operating the operation lever 30. The locking projection 19a may be configured to be pulled out from the locking hole 16a.

  Moreover, in the said embodiment, the attachment means 4 was comprised by the U-shaped groove | channel 14 and the latch receptacle 16 which the groove | channel back became the bearing groove 14, and the to-be-attached means 9 was comprised by the axis | shaft 17 and the latch 19 is shown. However, the latch receiver 16 may be provided on the inner side surface of the outer frame 1, and the attachment means 4 may be provided, and the latch 19 may be provided on the outer surface of the inner frame 6 to be the attachment means 9.

  Note that a cross having the same appearance may be stretched on the lower surface of the normal interior material 3 and the lower surface of the sound output interior plate 5.

It is sectional drawing of one Embodiment which shows the attachment state of the interior panel for sound outputs of this invention. It is a perspective view which shows the state before attachment of the interior material for sound output to an outer frame same as the above. It is a perspective view of the state which temporarily attached the interior material for sound output to the outer frame same as the above. It is a perspective view of the state which attached the interior material for sound output to the outer frame same as the above. (A) (b) (c) (d) is explanatory drawing which shows the order which inserts a shaft in the bearing groove of the groove | channel back of a U-shaped groove. It is a perspective view of the part which provided the latch receiver of the outer frame same as the above. It is a perspective view of the part which attached the latch of the inner frame same as the above. (A) is an exploded perspective view showing a latch and a latch case, (b) is an exploded perspective view showing a latch receiver and a latch, and (c) is a perspective view of a state in which the latch is locked to the latch receiver. It is. It is a perspective view of the example which provided the operation lever for canceling | releasing latching of a latch same as the above. (A) is a top view of the state which the latch same as the above latches to a latch receptacle, (b) is sectional drawing. (A) is a top view of the state which operated the operation lever same as the above and cancel | released latching with the latch receptacle of a latch, (b) is sectional drawing. (A) is sectional drawing which shows the attachment state of the interior material for sound outputs of other embodiment of this invention, (b) is a perspective view of the attachment part of an outer frame same as the above. (A) is sectional drawing which shows the attachment state of the interior material for sound outputs of further another embodiment of this invention, (b) is a perspective view of an outer frame same as the above. It is sectional drawing which shows the attachment state of the interior material for sound outputs of other embodiment of this invention.

Explanation of symbols

A sound output interior panel B opening N interior surface 1 outer frame 2 sound output interior material 4 attachment means 5 sound output interior plate 6 inner frame 7 back plate 8 exciter 9 attached means 10 recess 11 mounting portion 12 Press part 13 Bearing protrusion 14 U-shaped groove 15 Bearing groove 16 Latch receiver 17 Axis 18 Cut part 19 Latch

Claims (4)

  A sound output interior panel that constitutes a part of the interior surface of a building and has a sound generation function. The sound output interior panel is attached to and detached from an outer frame that is attached to the opening of the interior surface. The sound output interior material is freely fitted, provided with an attachment means on the inner side surface of the outer frame, the inner frame for allowing the sound output interior material to be freely fitted in the outer frame, and the inner frame A sound output interior plate attached to the periphery, a back plate fixed to the back of the inner frame so as to cover a portion surrounded by the inner frame on the back side, a sound output interior plate, an inner frame, and a back plate; And an exciter that is attached to the back surface of the sound output interior plate and vibrates the sound output interior plate to generate sound in the room. A mounting means is provided on the inner frame of the material, and the inner frame of the interior material for sound output is detachably fitted into the outer frame and attached. The sound output interior panel having a sound generating function, characterized by comprising attached detachably to the mounting means to stage.   2. A sound output interior panel having a sound generating function according to claim 1, wherein a concave portion that opens outward is provided on an outer surface portion of the outer frame to fit an end portion of the ordinary interior material.   An upper surface of the end portion of the ordinary interior material placed on the placement portion at the upper portion of the outer frame is provided at the lower portion of the outer frame to place the end portion of the ordinary interior material projecting outward. 2. A sound output interior panel having a sound generating function according to claim 1, further comprising a pressing portion that is movable up and down to press the sound from above. A bearing projection is provided at each longitudinal end of a pair of inner surfaces of the outer frame, and U-shaped grooves are formed in the bearing projection so as to open to the back and to the inside of the outer frame. A bearing groove having a diameter larger than the groove width of the U-shaped groove is formed in the depth of the U-shaped groove at the back of the U-shaped groove, Among the other pair of inner surfaces of the outer frame, a latch receiver is provided on the inner surface away from the portion where the U-shaped groove is provided, and the length of the pair of outer surfaces facing each other among the four outer surfaces of the inner frame A shaft is protruded outward at one end in the direction, and cut portions are provided on both side surfaces of the shaft parallel to the longitudinal direction of the side surface of the inner frame from which the shaft is protruded so that the dimension between the cut portions on both sides is determined. The diameter of the shaft is made smaller, the diameter of the shaft is set larger than the groove width of the U-shaped groove and smaller than the diameter of the bearing groove, and the shaft is cut. The dimension between them is set to be smaller than the groove width of the U-shaped groove, and the other end of the inner frame in the longitudinal direction of the pair of opposed inner surfaces or the shaft of the other pair of outer surfaces of the inner frame is provided. A latch is provided on the outer surface away from the part, and the inner frame projects toward the front of the outer frame so that the longitudinal direction of the outer surface provided with the shaft of the inner frame intersects the longitudinal direction of the outer frame. The shaft is pivotally supported in the bearing groove in a state where both cut portions are inserted into the bearing groove so that both cut portions are opposed to both inner surfaces of the U-shaped groove, and the inner frame is placed in the outer frame. The latch is detachably locked to the latch receiver in the fitted state, and the shaft cut portion is set to be non-parallel to the insertion direction of the U-shaped groove when the inner frame is fitted in the outer frame. An interior panel for sound output comprising the sound generation function according to any one of claims 1 to 3.

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