JP2005143900A - Acoustic device for bathroom unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problems that, when mounting a speaker on a curved ceiling panel of a bathroom unit, a baffle board is fixed to the lower side of the ceiling panel by fitting bolts, a packing is firmly pushed by the circumferential edge of the baffle board by the fixing by the fitting bolt to cause a crack in the baffle board and a crack in the packing by the circumferential edge of the baffle board and reduce the waterproof effect, and to provide the installation of a decorative cover protecting the packing by restricting the fastening degree of the packing, preventing deformation and breakage of the baffle board due to the crack by fastening by the fitting bolt, and preventing the enlargement of the external shape of a product. <P>SOLUTION: A plurality of projections projecting rearward from the circumferential edge of the baffle board are provided, and when fastening the baffle board with the fitting bolts, the plurality of projections are served as substantially connecting parts between the ceiling panel and the baffle board while restricting a pushing pressure to an annular seal packing. Locking claws of the decorative cover are elastically locked to the inside of the annular flange in the circumferential edge of the baffle board. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an audio device for a bathroom unit in which a speaker is attached to a ceiling panel of a bathroom unit such as a system bathroom.

There is a sound reproduction device for a bathroom unit such as a unit bathroom (for example, see Patent Document 1). In the invention of Patent Document 1, the unit bathroom is formed into a box shape with a waterproof pan, four wall panels, and an arched ceiling panel, a bathtub is installed on the waterproof pan, and a washroom and a washbasin are provided on the wall panel side. A counter for device placement is arranged. Then, two waterproof speakers are attached to the ceiling panel, and an actuator is attached to the wall (apron) on the washing room side of the bathtub, so that the two waterproof speakers on the ceiling panel reproduce medium and high sounds. However, the apron is used as a diaphragm to reproduce bass.
JP 2001-157642 A

  The thing of patent document 1 is the structure by which the two waterproof speakers for the reproduction | regeneration of a medium-high sound were attached to the curved ceiling panel. Conventionally, when a speaker is attached to such a curved ceiling panel, a baffle plate with the speaker attached on the upper side is arranged on the lower side of the ceiling panel via a packing, and this baffle plate is fixed to the ceiling panel with mounting bolts. The way to do it is taken. In this case, the periphery of the baffle plate strongly presses and seals the packing by tightening the mounting bolt, and when the mounting bolt is further tightened, the baffle plate is deformed to the ceiling panel side and the appearance is lost. Further, the tightening of the mounting bolts may cause the baffle plate to crack and be damaged, and the packing may be easily cracked by the peripheral edge of the baffle plate, resulting in a decrease in the waterproof effect.

  In addition, a decorative cover (also referred to as a decorative grill) is attached to the baffle plate so as to cover the bathroom side surface of the baffle plate. This decorative cover is configured to be locked to the peripheral edge of the baffle plate by the elasticity of the locking claw formed at the outer side of the packing at the peripheral edge, and this decorative cover is attached at the time of bathroom construction. In consideration of the above, the thickness of the locking claw is increased and the locking claw is made larger so as to have a strength higher than that of the locking claw of the decorative cover used for the speaker for indoor use. For this reason, the outer shape of the product becomes large, the appearance is lowered, and the degree of freedom of construction is limited.

  In view of these points, the present invention provides an acoustic device for a bathroom unit in which a speaker is attached to a ceiling panel of a bathroom unit such as a system bathroom. Provide a technology that can prevent deformation due to deformation and cracking of the baffle plate due to tightening. Further, the present invention provides a technique for mounting a decorative cover that does not increase the outer shape of the product.

  In the first invention, a baffle plate to which a speaker unit is attached is disposed at an opening of the cabinet so that an acoustic radiation surface faces the outside of the cabinet, and the baffle plate is disposed below the ceiling panel of the bathroom unit. The bathroom unit acoustic device is attached to the ceiling panel with a mounting bolt that penetrates the baffle plate in a state where the decorative cover is attached to the baffle plate so as to cover the acoustic radiation surface. The baffle plate is provided with locking claws protruding to the back side at a plurality of locations, the baffle plate has an annular flange on the front peripheral edge and a plurality of locking holes along the inner surface of the annular flange, An elastic locking portion is integrally formed, and the locking claw presses the elastic locking portion by rotating the decorative cover in a state where the locking claw is inserted into the locking hole. Decorative cover is characterized in that it is held in the baffle plate.

  According to a second invention, in the first invention, the locking claws and the locking holes are arranged at equal intervals on the circumference, and the locking claw is a locking whose rear end portion is bent in an L shape. Forming a side, and the locking hole forms a narrow portion through which the base of the locking claw is inserted continuously to a size portion through which the locking side is inserted. The edge part comprised the said elastic latching | locking part, It is characterized by the above-mentioned.

  According to a third aspect of the present invention, a baffle plate to which a speaker unit is attached is disposed in the opening of the cabinet so that the acoustic radiation surface faces the outside of the cabinet, and a decorative cover is provided on the baffle plate so as to cover the acoustic radiation surface. Attached to the ceiling panel with a plurality of mounting bolts inserted into the insertion holes of the baffle plate in a state where the baffle plate is disposed below the curved ceiling panel of the bathroom unit via an annular seal packing. A bathroom unit acoustic device to be mounted, wherein a plurality of protrusions projecting rearward from the peripheral edge of the baffle plate are provided on the back side of the baffle plate, and the annular seal packing is pushed when the mounting bolt is tightened. The plurality of protrusions serve as substantial coupling portions between the ceiling panel and the baffle plate while restricting pressure.

  According to a fourth invention, in the third invention, the protrusion is formed around each insertion hole, and the height of the protrusion is pressed by the peripheral edge of the baffle plate when the mounting bolt is tightened. The annular seal packing is set to a height that limits the pressing force.

  In the first invention, the decorative cover is rotated with the decorative cover in a state in which the decorative claws of the decorative cover are inserted into the plurality of engaging holes formed along the inner side of the annular flange on the front peripheral edge of the baffle plate. Therefore, since the stable attachment can be achieved without increasing the size of the locking claw as in the conventional case, the outer shape of the product does not increase. Then, the decorative cover is rotated so that the locking claw is locked to the elastic locking portion, and is stably held by the elasticity of the elastic locking portion. It can be easily removed by moving it.

  In the second invention, in addition to the effects of the first invention, the latching claw has a L-shaped bent shape and sufficient strength is obtained, and the latching hole of the baffle plate has the L-shape of the latching claw. Since the elastic locking portion can be formed by forming a narrow width portion through which the base portion of the locking claw is inserted continuously to the size portion through which the shaped locking side is inserted, the configuration is simplified. The

  In the third invention, when the mounting bolt is tightened, the plurality of protrusions of the baffle plate become a substantial coupling portion with the ceiling panel, so that the packing is protected by limiting the tightening degree of the packing and tightening the mounting bolt. It can prevent the baffle plate from being deformed or damaged by cracking, and is excellent as an attachment to a curved ceiling panel.

  In the fourth aspect of the invention, in addition to the effects of the third aspect of the invention, there is a protrusion in the tightening portion of the mounting bolt. Can be fixed.

  The present invention is for a bathroom unit that is attached to the ceiling panel with a plurality of mounting bolts that penetrate the baffle plate in a state where the baffle plate is disposed below the curved ceiling panel of the bathroom unit via an annular seal packing. It is an acoustic device (speaker system), and has a configuration in which a locking claw of a decorative cover is locked inside an annular flange of the baffle plate. In addition, when the mounting bolt of the baffle plate is tightened, a plurality of protrusions protruding rearward from the baffle plate while restricting the pressing force of the annular seal packing are substantially coupled portions of the ceiling panel and the baffle plate Examples of which are described below.

  Each figure shows a speaker system according to an embodiment of the present invention and its mounting state. FIG. 1 is an exploded perspective view of the speaker system of the present invention. FIG. 2 is a longitudinal sectional view showing the internal structure of the speaker system of the present invention. 3 is an exploded perspective view when the speaker system of the present invention is attached to the wall, FIG. 4 is a longitudinal sectional view of a portion where the speaker system of the present invention is attached to the wall, and FIG. 5 is an attachment portion of the decorative cover of the speaker system of the present invention. FIG. 6 is a perspective view of a stage in which the engaging claw of the decorative cover of the present invention is inserted into the engaging hole of the baffle plate, and FIG. 7 is an engaging perspective view of the baffle plate of the decorative cover of the present invention. FIG. 8 is an exploded perspective view showing another embodiment of the attachment portion of the decorative cover and the baffle plate of the present invention, and FIG. 9 is an interior view of the bathroom unit to which the speaker system of the present invention is attached. It is a perspective view

  In these drawings, reference numeral 1 denotes a bathroom unit speaker system (bathroom unit acoustic device) of the present invention, and an embodiment of a system in which this is attached to the ceiling panel 33 of the bathroom unit 30 will be described. The speaker system 1 of the present invention has a cylindrical shape in which a partition plate 5 is interposed between a first air chamber 2 kept in a sealed state and a second air chamber 4 having an acoustic duct 3. The cabinet 6 is configured, and the first speaker unit 8 is disposed on the baffle plate 9 provided in the first air chamber 2 so that the acoustic radiation surface 7 faces the outside of the cabinet 6, and the acoustic radiation surface 11 is the first. The second speaker unit 10 is disposed on the partition plate 5 so as to face the second air chamber 4, and one opening end 3 </ b> A of the acoustic duct 3 communicates with and opens to the baffle plate 9, and the other opening end 3 </ b> B. Is formed so as to communicate with the partition plate 5.

  The speaker system 1 according to the present invention includes a cylindrical cabinet 6 made of synthetic resin having openings at both ends, a baffle plate 9 made of synthetic resin, a back plate portion 17 made of synthetic resin, a first speaker unit 8, and a second speaker unit 8. The speaker unit 10 and the acoustic duct 3 are the main components. A partition plate 5 that bisects the cabinet 6 is integrally formed in an intermediate portion of the cylindrical cabinet 6, an acoustic duct 3 is integrally formed on the back side of the baffle plate 9, and an acoustic radiation opening is formed in the partition plate 5. 5A is formed, and the baffle plate 9 is formed with an acoustic radiation opening 9A. The first speaker unit 8 is attached so that the acoustic radiation surface 7 corresponds to the acoustic radiation opening 9A and closes the acoustic radiation opening 9A, and the acoustic radiation surface 11 corresponds to the acoustic radiation opening 5A. The second speaker unit 10 is attached so as to close the cabinet, and the back plate portion 17 is attached so as to close the cabinet 6 and the other end opening. The cylindrical cabinet 6 is configured to constitute a body portion of the speaker system 1.

  Thus, a sealed first air chamber 2 accommodating the first speaker unit 8 and the second speaker unit 10 is formed between the baffle plate 9 and the partition plate 5, and the partition plate 5 and the back plate portion 17 are formed. A second air chamber 4 that is hermetically sealed is formed between the two. The acoustic duct 3 brings the space on the front side of the baffle plate 9 into communication with the second air chamber 4. The acoustic duct 3 is arranged at a position biased to one side in the first air chamber 2.

  The first speaker unit 8 has a function of receiving a sound signal and vibrating the cone-shaped diaphragm 13 by a signal from the reproduction circuit device 12 having a function of amplification or the like to reproduce medium and high sounds. The flange 14A of the frame 14 surrounding the diaphragm 13 is attached to the back side of the peripheral edge portion of the acoustic radiation opening 9A formed in the baffle plate 9 with screws or the like. Thereby, the cone-shaped diaphragm 13 is in a state of spreading toward the acoustic radiation opening 9A.

  The second speaker unit 10 has a function of receiving a sound signal and vibrating the cone-shaped diaphragm 15 by a signal from a reproduction circuit device 12 having a function such as amplification to reproduce a bass sound. The flange 16A of the frame 16 surrounding the diaphragm 15 is attached to the back side of the peripheral edge of the acoustic radiation opening 5A formed in the partition plate 5 with screws or the like. Thereby, the cone-shaped diaphragm 15 is in a state of spreading toward the acoustic radiation opening 5A.

  The back plate portion 17 is a screw in a state where the annular flange 19 of the back plate portion 17 is fitted in the periphery of the rear end opening of the cabinet 6 so as to close the rear end opening of the second air chamber 4 in the cylindrical cabinet 6. 18 is attached.

  The baffle plate 9 is fitted with an annular groove 20 on the back side of the baffle plate 9 so that the lower end opening of the first air chamber 2 in the cabinet 6 is closed, and the cabinet 6 is fitted to the inner wall of the annular groove 20. 6 is attached with a screw 21 at the lower end opening periphery. Due to such an assembled state, the acoustic duct 3 takes a position biased to one side in the first air chamber 2.

  The acoustic duct 3 is integrally formed with the baffle plate 9 and a synthetic resin, and one opening end portion 3A communicates with the front surface of the baffle plate 9, and the other opening of the acoustic duct 3 is assembled by assembling the baffle plate 9 and the cabinet 6. The end 3 </ b> B communicates with the acoustic opening 5 </ b> B formed in the partition plate 5. Since one opening end 3A of the acoustic duct 3 communicates with the baffle plate 9 and the other opening end 3B communicates with the partition plate 5, the first speaker unit 8 and the second speaker unit 10 are configured. Since the speaker system 1 can be made compact, it is possible to simplify the attachment of the middle and high sound reproduction speaker unit and the low sound reproduction speaker unit to the ceiling panel 33.

  The speaker system 1 of the present invention has a feature that is effective in protecting the speaker unit 1 from water droplets generated by the moisture even when the speaker system 1 is attached to a place with high humidity. FIG. 5 shows an example of a state in which the bathroom unit 30 including the speaker system 1 of the present invention is installed in a bathroom area 50 configured in a building 51 such as an apartment. The bathroom unit 30 is formed in a box shape by a waterproof pan 31, front and rear side wall panels 32, and an arched or dome-like ceiling panel 33, a bathtub 34 is installed on the waterproof pan 31, and a wash place is located on the side wall panel 32 side. A basin counter and the like are arranged. Two speaker systems 1 are attached to the ceiling panel 33 with the first speaker unit 8 facing downward. The reproduction circuit device 12 is attached to the top surface of the ceiling panel 33 at a position between the two speaker systems 1.

  The mounting configuration of each of the two speaker systems 1 to the ceiling panel 33 is shown in FIG. That is, the speaker system 1 in which the baffle plate 9 and the back plate portion 17 are combined with the cylindrical cabinet 6 with the first speaker unit 8 and the second speaker unit 10 attached thereto is prepared and formed on the ceiling panel 33. The cabinet 6 is inserted from the back plate portion 17 side through the mounting opening 33A, and the baffle plate 9 is attached to the lower surface of the ceiling panel 33 via an annular elastic packing 35 disposed on the back side of the baffle plate 9 at the outer position of the annular groove 20. And mounted with a plurality of mounting bolts 36 penetrating the baffle plate 9 and the ceiling panel 33.

  Specifically, an annular flange 9B is formed at the peripheral portion on the surface side of the lower baffle plate 9, and a plurality of insertion holes 9C are formed at equal angular intervals in the baffle plate 9 at an inner position of the annular flange 9. The ceiling panel 33 is formed with a plurality of insertion holes 33B at equal angular intervals corresponding to the insertion holes 9C. Then, in a state where the heads of the plurality of mounting bolts 36 are arranged at the inner position of the annular flange 9B, the mounting bolts 36 pass through the insertion holes 9C and 33B, and the screw portions of the bolts 36 are connected to the ceiling panel 33. The speaker system 1 is attached to the ceiling panel 33 in a state where the elastic packing 35 is pressed by the peripheral edge of the baffle plate 9 by being screwed into the threaded portion 37A of the annular mounting ring 37 disposed on the back side. The attachment ring 37 may be attached to a predetermined position on the upper side of the ceiling panel 33 in advance.

  In this case, on the back side of the baffle plate 9, a plurality of protrusions 60 projecting rearward from the peripheral edge of the baffle plate 9 are provided, and when the mounting bolt 36 is tightened, the pressing pressure (crushing margin, pressing pressure) of the annular seal packing 35 is set. In this configuration, the plurality of protrusions 60 serve as substantial coupling portions between the ceiling panel 33 and the baffle plate 9 while limiting the dimensions).

  In order to achieve stable attachment in which the baffle plate 9 is not deformed by tightening with the attachment bolt 36, the protrusion 60 is formed around each insertion hole 9 </ b> C of the attachment bolt 36, and the height of the protrusion 60 is set to the height of the attachment bolt 36. Is set to a height that restricts the pressing force of the annular seal packing 35 that is pressed at the peripheral edge of the baffle plate 9.

  With this configuration, when the mounting bolt 36 is tightened, the protrusion 60 comes into contact with the ceiling panel 33 and the tightening of the mounting bolt 36 is completed. By completing the tightening, an interval is maintained between the peripheral portion of the baffle plate 9 and the ceiling panel 33 so that the annular seal packing 35 is in an appropriately pressed state in which the annular seal packing 35 is slightly compressed. For this reason, the possibility that the annular seal packing 35 is strongly pressed between the peripheral edge of the baffle plate 9 and the ceiling panel 33 to cause a crack at the peripheral edge of the baffle plate 9 is eliminated. The deterioration of the sealing effect by the packing 35 is also eliminated.

  Such a configuration makes it suitable for mounting the speaker system 1 on the curved ceiling panel 33.

  Note that the height of the protrusion 60 projecting to the back side of the baffle plate 9 and the thickness of the annular seal packing 35 are the ceiling panel of the bathroom unit 30 in advance when the speaker system 1 is configured as a standard system of the predetermined bathroom unit 30. What is necessary is just to make it the dimension match | combined with 33 curved state. However, in the case of the general-purpose speaker system 1 attached to the ceiling panel 33 or the like of the bathroom unit 30 that is not defined, it is difficult to preliminarily define the height of the protrusion 60 and the thickness of the annular seal packing 35. Make the length slightly longer, and make the annular seal packing 35 slightly thicker or prepare something with a different thickness, and at the construction site of the bathroom unit 30 in an apartment, etc. What is necessary is just to cut | disconnect the processus | protrusion 60 to the height match | combined with the curved state of the ceiling panel 33, or to select the annular seal packing 35 of suitable thickness, and to take the method of attaching the speaker system 1 to the ceiling panel 33.

  As another method, the height of the projection 60 is made to a predetermined height in advance, and when the height is insufficient to match the curved state of the ceiling panel 33, the height of the projection 60 is substantially reduced. There is a method in which an annular tube (collar) is mounted on the projection 60 so as to increase the height.

  By such attachment, the baffle plate 9 is located on the bathroom side, the acoustic radiation surface 7 of the first speaker unit 8 is directed downward, and the cone-shaped diaphragm 13 is opened downward. Then, the acoustic radiation surface 11 of the second speaker unit 10 faces upward, and the cone-shaped diaphragm 15 opens upward. As a result, the second air chamber 4 is disposed above the first air chamber 2, and the acoustic duct 3 extends in the vertical direction so that the low sound of the second air chamber 4 can be transmitted to the interior of the bathroom unit 30. The arrangement is as shown in FIG.

  Reference numeral 40 denotes a decorative cover, which is also called a decorative grille, and a protective net 40A configured in a mesh shape or the like with a rust preventive material is attached to a peripheral frame 41 made of synthetic resin, and the frame 41 may be an annular shape itself. However, a form in which a large number of polygonal or other acoustic holes are formed inside the frame 41 may be used. The decorative cover 40 is engaged with the engaging claw 42 by slightly rotating the decorative cover 40 in a state where the plurality of engaging claws 42 formed on the frame 41 are inserted into the engaging holes 43 formed on the baffle plate 9. It is configured to be elastically locked to the locking portion 44 of the hole 43 and detachably attached.

  As shown in FIGS. 5 to 7, the relationship between the locking claw 42 and the locking portion 44 is that the locking claw 42 that protrudes to the back side at a plurality of positions on the peripheral frame 41 of the decorative cover is arranged with the peripheral frame 41. The baffle plate 9 is integrally molded, and locking holes 43 are formed at a plurality of positions at equal intervals along the inner surface of the annular flange 9B on the peripheral edge of the front surface. An elastic locking portion 44 is integrally formed at the edge of the locking hole 43, and the locking claw 42 is elastically engaged by rotating the decorative cover 40 with the locking claw 42 inserted into the locking hole 43. The decorative cover 40 is held by the baffle plate 9 by pressing the stopper 44.

  As a result, the decorative cover 40 is configured such that the engaging claws 42 of the decorative cover 40 are inserted into a plurality of engaging holes 43 formed along the inner side of the annular flange 9 </ b> B at the front peripheral edge of the baffle plate 9. Since it is attached along with the rotation, stable attachment can be achieved without increasing the size of the locking claw as in the prior art, so that the outer shape of the product does not increase. Then, the decorative cover 40 is rotated so that the locking claw 42 is locked to the elastic locking portion 44, and is stably held by the elasticity of the elastic locking portion 44. It can be easily removed by turning it in the opposite direction.

  The locking claw 42 and the locking hole 43 are arranged at equal intervals on the circumference, the locking claw 42 forms a locking side 42A whose rear end portion is bent in an L shape, and the locking hole 43 is engaged. A narrow portion 43B through which the base portion of the locking claw 42 is inserted is formed continuously to the size portion 43A through which the stop side 42A is inserted, and the edge of the narrow portion 43B defines the elastic locking portion 44. It is composed. In order to improve the elasticity of the elastic locking portion 44, a slit 43C is formed continuously to the portion 43A on the opposite side of the narrow portion 43B. Inside the locking side 42 of the locking claw 42, an inclined surface 42 </ b> B is formed so that the interval between the frame 41 and the locking side 42 becomes narrower according to the meshing direction with the elastic locking part 44.

  Thus, by rotating the decorative cover 40, the inclined surface 42B of the locking side 42A presses and bends the elastic locking portion 44, and the engagement between the locking claw 42 and the elastic locking portion 44 is maintained. The decorative cover 40 is attached to the baffle plate 9. For this reason, in addition to the above-described effect, the locking claw 42 has a sufficient shape due to the L-shaped bent shape, and the locking hole 43 of the baffle plate 9 has a size that allows the locking side 42A to be inserted. Since the elastic locking portion 44 can be formed by forming the narrow portion 43B through which the base portion of the locking claw 42 is inserted continuously from the portion 43A, the configuration is simplified.

  If the speaker system 1 is repaired or exchanged, the speaker system 1 can be removed from the ceiling panel 33 by removing the decorative cover 40 and then loosening the mounting bolt 36 by the reverse operation.

  In the above configuration, the annular seal packing 35 is annularly disposed outside the protrusion 60 and is adhered and held on the back side of the peripheral edge portion of the baffle plate 9 with a double-sided adhesive tape. In this state, the annular seal packing 35 closes the elastic locking portion 44 and the locking hole 43 and seals this portion, but the double-sided adhesive tape adheres to the elastic locking portion 44 and the locking hole 43. It becomes difficult to insert the locking claw 42 into the locking hole 43. In order to prevent this, if the annular seal packing 35 is cut off at the engaging hole 43 portion, the sealing effect at this portion cannot be obtained.

  In the present invention, instead of cutting off the annular seal packing 35, the elastic locking portion 44 and the locking hole 43 are covered and peeled so that the double-sided adhesive tape does not adhere to the elastic locking portion 44 and the locking hole 43. A material (film or sheet) is provided. Specifically, an adhesive release material having a size covering the periphery of the locking hole 43 is attached to the baffle plate 9 so as to cover the elastic locking portion 44 and the locking hole 43, or the locking hole 43 side of the double-sided adhesive tape Adhere to the surface. This facilitates the insertion of the locking claw 42 into the locking hole 43 and also improves the seal of this portion.

  FIG. 8 shows another embodiment relating to the attachment of the decorative cover 40 of the present invention. In this case, the same reference numerals as those in FIGS. 5 to 7 indicate the same functional parts. In FIG. 8, the locking hole 43 forms a narrow portion 43B through which the base portion of the locking claw 42 is inserted continuously from the size portion 43A through which the locking side 42A is inserted, and this narrow portion 43B. The edge part of this part constitutes the elastic locking part 44. Thus, by rotating the decorative cover 40, the engagement side 42 </ b> A presses and bends the elastic locking portion 44, and the meshing between the locking claw 42 and the elastic locking portion 44 is maintained. Is attached to the baffle plate 9.

  For this reason, the decorative cover 40 is configured such that the engaging claws 42 of the decorative cover 40 are inserted into a plurality of engaging holes 43 formed along the inner side of the annular flange 9B at the front peripheral edge of the baffle plate 9. Since it attaches with rotation, since the stable attachment can be achieved without enlarging a latching claw like the past, the external shape of a product does not become large. Then, the decorative cover 40 is locked by the elastic locking portion 44 by the rotation of the decorative cover 40, and is stably held by the elasticity of the elastic locking portion 44. It can be easily removed by rotating it in the opposite direction.

  Further, the latching claw 42 has a L-shaped bent shape to obtain sufficient strength, and the latching hole 43 of the baffle plate 9 is latched continuously to the size portion 43A through which the latching side 42A is inserted. Since the elastic locking portion 44 can be formed by forming the narrow portion 43B through which the base portion of the claw 42 is inserted, the configuration is simplified.

  As described above, the speaker system 1 of the present invention has a configuration in which the first speaker unit 8 and the second speaker unit 10 are integrated, and the speaker system 1 can be made compact. Installation of the low-pitched sound reproduction speaker unit is simplified.

  Also, when the bathroom unit 30 is attached to the ceiling wall 33, the low sound is reproduced by the second speaker unit 10 and radiated to the second air chamber 4, and radiated from the acoustic duct 3 to the room of the bathroom unit 30 below. Therefore, in combination with the medium and high sounds reproduced by the first speaker unit 8, an audible flatness can be obtained and a good acoustic effect can be obtained.

  The bathroom unit 30 having the speaker system 1 of the present invention as a standard component can also be provided to the market. In this case, a cabinet 6 in which the partition plate 5 is interposed between the first air chamber 2 kept in a hermetically sealed state and the second air chamber 4 provided with the acoustic duct 3 is configured to be acoustically The first speaker unit 8 is disposed on the baffle plate 9 provided in the first air chamber 2 so that the radiation surface 7 faces the outside of the cabinet 6, and the acoustic radiation surface 11 faces the second air chamber 4. As described above, the second speaker unit 10 is arranged on the partition plate 5, and the speaker system 1 in which the opening end of the acoustic duct 3 is formed in communication with each of the baffle plate 9 and the partition plate 5 is used as the ceiling panel 33 of the bathroom unit 30. On the other hand, the bathroom unit 30 is attached such that the baffle plate 9 is on the indoor side of the bathroom unit 30 and the first speaker unit 8 is on the lower side.

  As described above, the present invention is applicable to various bathroom units as a speaker system that can be attached to the ceiling panel of a bathroom unit with the first speaker unit on the bottom and the second speaker unit on the top. Although it can be provided to the market, it can also be provided to the market as a bathroom unit using the speaker system of the present invention as a standard component. It can be applied not only as a bathroom unit but also in various bathrooms, and can also be applied when it is desired to obtain an acoustic effect in a humid place.

It is a disassembled perspective view of the speaker system of this invention. (Example 1) It is a longitudinal cross-sectional view which shows the speaker system internal structure of this invention. (Example 1) It is a disassembled perspective view at the time of attaching the speaker system of this invention to a wall. (Example 1) It is a longitudinal cross-sectional view of the part which attached the speaker system of this invention to the wall. (Example 1) It is a disassembled perspective view of the attachment part of the decorative cover of the speaker system of this invention. (Example 1) It is a perspective view of the stage which inserted the latching claw of the decorative cover of the present invention into the latching hole of the baffle plate. (Example 1) It is a perspective view in the state where the latching claw of the decorative cover of the present invention was engaged with the latching hole of the baffle plate. (Example 1) It is a disassembled perspective view which shows the other Example of the attaching part of the decorative cover and baffle board of this invention. (Example 2) It is an internal perspective view of the bathroom unit which attached the speaker system of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Speaker system 2 ... 1st air chamber 3 ... Acoustic duct 3A, 3B ... Open end part of acoustic duct 4 ... 2nd air chamber 5 ... Partition plate 5A・ Acoustic radiation opening 6 ... Cabinet (body part)
DESCRIPTION OF SYMBOLS 7 ... Acoustic radiation surface 8 ... 1st speaker unit 9 ... Baffle plate 9A ... Acoustic radiation opening 9B ... Annular flange 10 ... Second speaker unit 11 ... Acoustic radiation surface 13 .... Diaphragm 15 ・ ・ Vibration plate 17 ・ ・ Back plate part 20 ・ ・ Annular groove 30 ・ ・ Bathroom unit 33 ・ ・ Ceiling panel 35 ・ ・ Annular seal packing 36 ・ ・ Mounting bolt 40 ・ ・ Drying cover 42 ・ ・ Locking claw 42B ·· Inclined surface 42A · · L-shaped locking side 43 · · Locking hole 43A · · Size portion of the locking hole 43B · · Narrow portion of the locking hole 44 · · Elastic locking portion 60 · · projection

Claims (4)

  A baffle plate to which a speaker unit is attached is disposed at the opening of the cabinet so that the acoustic radiation surface faces the outside of the cabinet, and the baffle plate is disposed below the ceiling panel of the bathroom unit. A bathroom unit acoustic device is attached to the ceiling panel with a mounting bolt penetrating through and attached to the baffle plate so as to cover the acoustic radiation surface, and the decorative cover projects to the back side at a plurality of locations. The baffle plate is provided with an annular flange on the front peripheral edge and a plurality of engaging holes along the inner surface of the annular flange, and an elastic engaging portion is integrated with the edge of the engaging hole. In the state where the locking claw is inserted into the locking hole, the locking claw presses the elastic locking portion by the rotation of the decorative cover, and the decorative cover is Bathroom unit for sound apparatus, characterized in that it is held in the serial baffle plate.   The locking claw and the locking hole are arranged at equal intervals on the circumference, the locking claw forms a locking side whose rear end portion is bent in an L shape, and the locking hole is the locking hole. A narrow portion where the base portion of the locking claw is inserted continuously to a size portion where the stop side is inserted is formed, and an edge portion of the narrow portion constitutes the elastic locking portion. The acoustic device for a bathroom unit according to claim 1.   A baffle plate to which a speaker unit is attached is disposed in the opening of the cabinet so that the acoustic radiation surface faces the outside of the cabinet, and a decorative cover is attached to the baffle plate so as to cover the acoustic radiation surface, and the baffle plate Is attached to the ceiling panel with a plurality of mounting bolts penetrating each through-hole of the baffle plate in a state where it is disposed below the curved ceiling panel of the bathroom unit via an annular seal packing. A plurality of protrusions protruding rearward from the peripheral edge of the baffle plate are provided on the back side of the baffle plate, and the plurality of protrusions are restricted while restricting the pressing force of the annular seal packing when the mounting bolt is tightened. The projection for the bathroom unit serves as a substantial coupling portion between the ceiling panel and the baffle plate. Location.   The protrusion is formed around each through-hole, and the height of the protrusion is a height that limits the pressing force of the annular seal packing that is pressed at the peripheral edge of the baffle plate when the mounting bolt is tightened. 4. The bathroom unit acoustic device according to claim 3, wherein the bathroom unit acoustic device is set.

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