JP3832514B2 - Speaker device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a speaker device, and more particularly to a speaker device in which a speaker is housed in a speaker box.
[0002]
[Prior art]
In general, a speaker device is configured such that a speaker body composed of dynamic speakers is housed in a speaker box. In this case, the speaker is attached to the inside of the front plate so that the diaphragm on the front side of the speaker faces the opening formed in the front plate of the speaker box. The grill is attached so as to cover the opening constituting the sound emission opening of the front plate.
[0003]
[Problems to be solved by the invention]
According to such a conventional configuration, the grill must be attached so as to cover the opening of the front plate of the speaker, and the grill is attached to the outside of the front plate via the fixing means. Since such a grill is relatively weak against external force, foreign matter or the like may break the grill and come into contact with the diaphragm of the speaker, possibly damaging the speaker. Also, the conventional grill cannot adjust the sound spread arbitrarily.
[0004]
The present invention has been made in view of such a problem, and does not require mounting a grille so as to cover the sound emission port, and has a speaker box that can safely protect the speaker. The object is to provide an apparatus.
[0005]
[Means for Solving the Problems]
Main invention of this cancer, in the speaker device formed by housing the speakers in the speaker box,
A front panel of the loudspeaker box also serves as a mounting plate of the speaker,
A sound emitting port is formed in the front panel,
A duct provided in the front panel;
A cover attached so as to cover the sound outlet and the opening on the front side of the duct ;
The cover is formed to be larger than the sound emission port, and extends in front of an opening on the front side of the duct arranged adjacent to the sound emission port, and the side end of the cover and the front the gap for sound is formed between the panels, yet in which the cover is double as the handle of the speaker box.
[0007]
The front panel may be formed of a molded body that is integrally formed of a synthetic tree, and the sound emission port may be configured by a vertically long opening formed in the molded body.
[0008]
The cover is provided with a pair of leg portions on the end side in the length direction of the sound emission port, and the leg portions are inserted into leg insertion holes on both sides of the front side opening of the duct of the front panel, It may be fastened by fastening means from the inside .
[0010]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows the overall appearance of a speaker box according to an embodiment of the present invention. The speaker box 10 is composed of a normal injection-molded body of high impact polystyrene resin, and the front side is an opening. The speaker box 10 is combined with the front panel 11 so as to close the opening. As shown in FIG. 2 and FIG. 3, a sound emission port composed of a vertically long opening 12 is formed on the surface of the front panel 11 and slightly below the middle position so as to cover the opening 12. A cover 13 is coupled to the front panel 11. The cover 13 is a substantially plate-shaped member integrally formed with an injection molded body of synthetic resin, for example, high impact polystyrene, and is also used as a handle.
[0011]
Inside the opening 12 covered by the cover 13, a speaker 14 is attached to the front panel 11 as shown in FIGS. 2, 3, 5 and 6. Ducts 15 and 16 are projected from the front panel 11 so as to be positioned above and below the speaker 14, respectively. Each of these ducts 15 and 16 is for emitting a low-frequency reproduction sound.
[0012]
The sound emission opening formed by the opening 12 is provided in a recess 59 formed in the front panel 11, and a rib 60 is formed at the peripheral edge of the opening 12 to form a vertically long sound emission opening 12. It has come to be. As shown in FIGS. 5 and 6, mounting seats 61 are respectively formed on the upper and lower portions of the recess 59, and the upper and lower ends of the cover 13 are fixed to these mounting seats 61. It is like that. A gap is formed between the front end of the rib 60 of the sound outlet 12 and the inner surface of the cover 13, and the reproduction sound of the speaker 14 is emitted forward from the recess 59 through this gap.
[0013]
A pair of left and right leg insertion holes 62 are formed in the upper and lower mounting seats 61, respectively, and the leg insertion holes 62 are respectively formed inside the cover 13 and in the upper and lower portions thereof. A pair of left and right leg portions 63 are inserted. Such a leg portion 63 is fixed to the both sides of the ducts 15 and 16 by the fixing screws 64 from the inside of the front panel 11 as shown in FIG. ing.
[0014]
A ring-shaped rib 66 is formed on the inner side of the front panel 11 and around the vertically long opening 12 constituting the sound emission opening, as shown in FIGS. And the speaker 14 is attached so that it may contact | abut on such a rib 66. FIG. That is, the ring-shaped rib 66 portion of the front panel 11 constitutes a mounting seat for the speaker 14, and the front panel 11 also serves as a mounting plate for the speaker 14.
[0015]
As shown in FIGS. 1 and 2, a control panel surface 18 made of an inclined surface is formed on the upper end side of the front panel 11, and the control panel surface 18 has adjustment knobs 19 and 20, and a switching knob 21. , Push buttons 22 and the like are provided.
[0016]
Variable elements such as a volume 25 and a switch that are adjusted by the adjustment knobs 19 and 20, the switching knob 21, and the push button 22 make a right angle with the control panel surface 18 inside the control panel surface 18 of the front panel 11. It is mounted on the front end portion of the printed circuit board 26 which is disposed obliquely. Another printed circuit board 27 is horizontally arranged so as to be connected to the printed circuit board 26. An electronic component 28 is mounted on each of the printed boards 26 and 27, and a joint portion of the printed boards 26 and 27 is supported by the front panel 11 via a bracket 29 and a cylindrical boss 30. The rear end portion of the printed circuit board 27 arranged horizontally is supported by the rear side portion of the speaker box 10 via the holding claws 31. A heat sink 32 is mounted on the lower surface of the printed circuit board 27 together with the electronic component 28.
[0017]
Openings 34 and 35 are formed on the back side of the speaker box 10 and on the upper side thereof. These openings 34 and 35 are for ventilating the upper part of the interior space of the speaker box 10 or for inserting a jack for connection to an external device. The upper space of the speaker box 10 having such openings 34 and 35 is partitioned from the lower space in which the speaker 14 is accommodated by the partition plate 36. As shown in FIG. 3, the partition plate 36 is provided so as to cross the inside. Then, both portions on the front end side of the partition plate 36 are sandwiched and held by guide ribs 37 formed on both sides of the front panel 11, respectively.
[0018]
The speaker 14 is accommodated in the space below the partition plate 36 of the speaker box 10 as described above. Further, as shown in FIG. 2, a mount seat 40 is provided on the back side of the speaker 14 and inside the back portion of the speaker box 10, and a transformer 41 is mounted on the mount seat 40.
[0019]
Next, the vibration damping structure of the speaker box 10 will be described. As shown in FIGS. 2 and 3, a pair of left and right cylindrical bosses 45 project from the upper side of the partition plate 36 so as to protrude forward from the back side in the speaker box 10. In addition, a total of four cylindrical bosses 46 are mounted on the lower side of the partition plate 36 in pairs of left and right in two upper and lower stages. As shown in FIG. 2, the upper cylindrical boss 45 is coupled to a columnar boss 44 that protrudes inside the front panel 11. On the other hand, the four cylindrical bosses 46 on the lower side of the partition plate 36 are coupled to the damping member 47 and the columnar boss 49 projecting from the front panel 11.
[0020]
As shown in FIGS. 4 and 5, the damping member 47 is arranged so as to cross the internal space of the speaker box 10 in the lateral direction. The tip end of the cylindrical boss 46 is received by a pair of holding cylinders 48 provided on the vibration damping member 47. The front end portion of the holding cylinder 48 is brought into contact with a cylindrical boss 49 protruding from the inside of the front panel 11. Then, the screw 51 inserted through the inside from the back side of the cylindrical boss 46 is inserted into the screw insertion hole 50 on the front end side of the cylindrical boss 46, and the tip end portion is screwed into the columnar boss 49, thereby the cylindrical boss 46. The holding cylinder 48 of the damping member 47 and the cylindrical boss 49 are coupled to each other. In particular, as shown in FIG. 4, the cylindrical boss 46 is integrally connected to the left and right side plate portions 55 on the side surfaces thereof by ribs 52.
[0021]
The vibration damping member 47 is configured such that both ends in the length direction are in contact with the left and right side plate portions 55 of the speaker box 10. Moreover, a cushioning material 54 made of non-woven fabric is interposed between the left and right ends of the damping member 47 and the side plate portion 55, and the damping member 47 is disposed on both sides via the cushioning material 54. The side plate portion 55 is pressed so as to spread outward. By such a damping action of the damping member 47, the box noise accompanying the vibration of the side plate portion 55 is more reliably prevented.
[0022]
In the configuration as described above, when a drive current is passed through the voice coil of the speaker 14 that is housed in the speaker box 10 and fixedly attached to the front panel 11, the diaphragm vibrates due to vibration in the axial direction of the voice coil. Then, the reproduced sound is emitted forward through the sound emission port 12 having a vertically long opening. Further, the reproduced sound on the low frequency side is emitted through the upper and lower ducts 15 and 16.
[0023]
According to such a speaker device, since the cover 13 is attached so as to cover the sound emission opening 12 from the outside of the sound emission opening 12 of the front panel 11 in particular, it is not necessary to cover the opening 12 with a grill or the like. This eliminates the need for a grill. Then, the leg portion 63 formed integrally with the cover 13 made of a synthetic resin molded body such as high-impact polystyrene is inserted into the leg portion insertion hole 62, and the cover 13 is attached only by fixing with the fixing screw 64 from the inside. Since it is fixed, it is possible to simplify the structure of the cover 13 that covers the sound outlet 12. Further, such a cover 13 prevents the hole of the sound emission opening 12 from being exposed to the outside. Moreover, even if it contacts with a foreign material etc., the cover 13 does not contact a foreign material with the diaphragm of the speaker 14, and can protect the speaker 14 safely.
[0024]
In addition, since the sound outlet 12 is formed with a rib 60 around it and the cover 13 is mounted so as to cover the sound outlet 12, such a sound outlet 12 is provided. The spread of the sound can be adjusted by the shape of the recess 59 in which the sound emission opening 12 is formed, the height of the rib 60, or the shape of the cover 13, the position of the cover 13 and the like. The sound spread can be easily adjusted as compared with the sound outlet.
[0025]
Further, a gap is formed between the cover 13 and the front end of the rib 60 of the sound emission opening 12 so that the speaker box 10 can be held by using the recess 59 to insert a hand inside the cover 13 and using the cover 13 as a handle. Become. Therefore, it is possible to provide a speaker device that is convenient to handle and carry.
【The invention's effect】
Sound or main invention of this gun is as described above, in the speaker device formed by housing the speakers in the speaker box, which is formed with the front panel of the loudspeaker box also serves as a mounting plate of the speaker, the front panel An opening, a duct provided in the front panel, and a cover that is attached to cover the sound emission opening and the opening on the front side of the duct . The cover is formed larger than the sound emission opening, and It extends in front of the opening on the front side of the duct arranged adjacent to the sound outlet, and a gap for sound emission is formed between the side edge of the cover and the front panel, and the cover serves as a handle for the speaker box. It is intended to be used for both purposes.
[0026]
Therefore, the sound outlet can be covered from the outside by the cover, and it is not necessary to attach a grill to the sound outlet. Since the cover also serves as a handle for the speaker box, the speaker box can be easily carried by the handle also serving as the cover, and a speaker device having a speaker box that is easy to handle is provided.
[0027]
When the front panel is composed of a molded body integrally formed of synthetic resin, and a sound emission port is configured by a vertically long opening formed in the molded body, a speaker box having a simple structure and easy assembly is provided. A speaker device can be provided.
[0029]
The cover has a pair of legs on the end side in the length direction of the sound outlet, and the legs are inserted into the leg insertion holes on both sides of the opening on the front side of the duct of the front panel and fixed from the inside. According to the configuration to be fastened by means cover ing to be mounted easily and reliably on the front panel.
[Brief description of the drawings]
FIG. 1 is an external perspective view of a speaker device according to an embodiment of the present invention.
FIG. 2 is a longitudinal sectional view of the speaker device.
FIG. 3 is a longitudinal sectional view of the speaker device viewed from another angle.
FIG. 4 is a cross-sectional view of the speaker device.
FIG. 5 is an exploded perspective view of the main part showing the structure of the front panel.
FIG. 6 is a longitudinal sectional view of the main part.
FIG. 7 is a cross-sectional view of the relevant part.
[Explanation of symbols]
10 Speaker box 11 Front panel 12 Opening (sound outlet)
13 Cover 14 Speaker 15 Duct (upper)
16 Duct (bottom)
18 Control panel surface (inclined surface)
19, 20 Adjustment knob 21 Switching knob 22 Push button 25 Volume 26, 27 Printed circuit board 28 Electronic component 29 Bracket 30 Columnar boss 31 Holding claw 32 Heat sink 34, 35 Opening 36 Partition plate 37 Guide rib 40 Mount seat 41 Transformer 44 Columnar boss 45 46 Cylindrical boss 47 Damping member 48 Holding cylinder 49 Cylindrical boss 50 Screw insertion hole 51 Screw 52 Rib 54 Buffer material (nonwoven fabric)
55 Side plate portion 59 Recessed portion 60 Rib 61 Mounting seat 62 Leg portion insertion hole 63 Leg portion 64 Fixing screw 66 Ring-shaped rib

Claims (3)

In a speaker device comprising a speaker housed in a speaker box,
A front panel of the speaker box that also serves as a mounting plate for the speaker;
A sound outlet formed in the front panel;
A duct provided in the front panel;
A cover attached so as to cover the sound outlet and the opening on the front side of the duct ;
The cover is formed to be larger than the sound emission port, and extends in front of an opening on the front side of the duct arranged adjacent to the sound emission port, and the side end of the cover and the front A speaker device characterized in that a sound emitting gap is formed between the panel and the cover also serves as a handle of the speaker box.   The said front panel is comprised from the molded object integrally shape | molded by the synthetic resin, and the said sound emission opening is comprised by the vertically long opening formed in this molded object. The speaker device according to 1. The cover is provided with a pair of leg portions on each end side in the length direction of the sound emission port, and the leg portions are inserted into leg insertion holes on both sides of the opening on the front side of the duct of the front panel, The speaker device according to claim 2, wherein the speaker device is fixed by fixing means from the inside.

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