JP2002297141A - Stand for electronic keyboard instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stand for electronic keyboard instrument which is capable of improving an extencity feeling and sharpness of the playing tones from speakers, enhancing the degree of freedom in the design of a lower front plate and reducing the manufacturing cost. SOLUTION: The stand for electronic keyboard instrument for supporting a musical instrument body has right and left side plates 12 and 12 which support the musical instrument body in the state of placing the musical instrument body 2 thereon, the right and left speaker boxes 17 and 17 which house the speakers 16 for radiating the playing tones of the electronic musical instrument 1 and are respectively attached to the right and left side plates 12 and 12 in the state of directing the sound releasing surfaces of the speakers 16 to the front and lower front plates 15 which are disposed to cover the front portions of the right and left side plates 12 and 12 on the front side of these right and left speaker boxes 17 and 17 and have openings 27 and 27 for sound releasing in the positions corresponding to the speakers 16 and 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stand for an electronic keyboard instrument such as an electronic piano or an electronic organ having a speaker.

[0002]

2. Description of the Related Art As conventional electronic pianos having speakers, for example, those shown in FIGS. 4 and 5 are known. In the electronic piano 50 of FIG. 4, left and right speaker boxes 53 (only one is shown) are attached to the lower surface of a shelf 52 of a piano body 51. In this case, the shelf 52
Are used as a back wall of the closed speaker box 53. The speaker 54 is a speaker box 5
3, the sound emitting surface is arranged downward.

In an electronic piano 60 shown in FIG. 5, left and right speaker boxes 63, 63 are provided on a lower front plate 62, which covers a lower space of a piano body 61, with sound emission surfaces of the speakers 64, 64 facing forward. Attached. This lower front plate 6
2 is a sound emission opening 6 at a position corresponding to each speaker 64.
It is composed of a wooden panel 66 having formed therein 5 and 65, and a jersey net 67 for blindfolding and decoration of the sound emission openings 65 and 65 is provided on the front surface thereof. Each speaker 6
The sound of No. 4 is radiated forward through the jersey net 67 through the corresponding sound emission opening 65. In addition, lower front plate 6
2 is mounted on a pedal base 69 extending between the left and right wife bases 68 (only one is shown).
A pedal unit 72 composed of a pedal box 70 and a pedal 71 is attached to the lower surface of 9.

[0004]

However, as shown in FIG.
In the electronic piano 50, the sound emission surface of the speaker 54 is directed downward, and the sound of the speaker 54 is radiated downward. On the other hand, in the electronic piano 60 of FIG. 5, the speaker 64 is directed forward, and the sound of the speaker 64 is emitted forward through the sound emission opening 65 and the jersey net 67. Will be resolved. However, since the speaker boxes 63 and 63 are attached to the lower front plate 62, they have to be arranged to the center side to some extent, so that there is a drawback that a sufficient feeling of sound spread cannot be obtained. Further, since the speaker box 63 is directly attached to the wooden panel 66 of the lower front plate 62, the speaker 6
As a result of the vibration of No. 4 being transmitted to the wooden panel 66, the sounds of both speakers 64, 64 interfere with each other, resulting in an unclear (not clear) performance sound. In order to avoid this drawback, for example, it is conceivable to make the wooden panel 66 thicker and increase its rigidity to make it harder to vibrate.
However, in this case, the wooden panel 66 becomes considerably thick, and the degree of freedom in designing the lower front plate 62 and thus the electronic piano 60 is reduced.

Further, in the electronic piano 60, since the pedal base 69 and the pedal box 70 are exposed forward, in order to maintain the appearance, the front surfaces thereof must be provided with makeup such as painting. It costs extra for minutes.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and improves the sense of spread and clarity of performance sounds from a speaker, increases the degree of freedom in designing a lower front plate, and manufactures the lower front plate. An object of the present invention is to provide a stand for an electronic keyboard instrument that can reduce costs.

[0007]

SUMMARY OF THE INVENTION To achieve this object, the present invention relates to a stand for an electronic keyboard instrument supporting a main body of a musical instrument. A left and right speaker box is mounted on each of the left and right side panels with the sound emitting surface of the speaker facing forward, and a left and right side panel is provided in front of the left and right speaker boxes. A lower front plate provided so as to cover between the front portions and having a sound emission opening at a position corresponding to the speaker.

According to the stand of the electronic keyboard instrument, the performance sound is radiated forward from each speaker of the left and right speaker boxes through the sound emission opening of the lower front plate disposed on the front side. In this case, the left and right speaker boxes are directly attached to the left and right side plates, respectively,
Since they are separated from each other as much as possible, it is possible to obtain a sufficient feeling of the spread of the performance sound. Further, since the side plate supporting the speaker box is usually configured to have inherently high strength and rigidity to support the musical instrument main body, the degree of vibration caused by vibration of the attached speaker is very low. Therefore, since the sounds of the left and right speakers are radiated independently of each other with little interference, the clarity of the performance sound can also be improved.

Further, the lower front plate of the present invention is arranged on the front side of the speaker box and mainly plays a role of guiding the sound of the speaker forward through the sound emission opening. Unlike the conventional case in which the sound is directly attached, the sound of the performance is not basically affected. Therefore, the degree of freedom of the design can be increased, for example, the thickness of the lower front plate can be reduced.

[0010] In this case, it is preferable that the outer side walls of the left and right speaker boxes are respectively constituted by left and right side plates.

According to this configuration, since the left and right side plates are also used as the outer side walls of each speaker box, the number of parts and the number of assembling steps can be reduced, thereby reducing the manufacturing cost.

[0012] In these cases, the vehicle further includes a pedal base provided between the left and right side plates, a pedal box attached to the pedal base, and a pedal protruding forward from the pedal box. The pedal base and the pedal box are preferably provided so as to cover them from the front.

[0013] In this configuration, the pedal base and the pedal box are covered from the front by the lower front plate and are completely concealed, so that the conventional painting of the pedal base and the pedal box is not required at all. ,
Accordingly, the manufacturing cost can be further reduced.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows an electronic piano including a stand to which the present invention is applied. As shown in FIG. 1, the electronic piano 1 includes a piano body 2 (instrument body) and a stand 3 for supporting the same.

The piano body 2 includes a horizontal shelf 4, arms 5, 5, and both arms 5, 5 erected on the left and right ends of the shelf 4.
A large number of keys 8 and control panels 9 are accommodated in a case 7 composed of a top plate 6 and the like passed between the upper end portions. A jersey net 11 is attached between the top plate 6 and the lower keyboard cover 10 so as to extend in the left-right direction. (Tweeter).

On the other hand, as shown in FIG. 2, the stand 3 is provided with left and right side plates 1 for supporting the piano body 2 mounted thereon.
2 and 12 and the right and left bases 1 that are the bases of the side plates 12
3, 13; a pedal base 14 passed between the wife bases 13, 13; and a lower front plate 15 covering the front of the side plates 12, 12.
It is composed of a back plate (not shown) or the like that covers between the rear portions of the side plates 12 and 12.

Each side plate 12 is made of plywood or M to ensure high strength and rigidity to firmly support the piano body 2.
It is composed of a relatively thick wooden board made of DF or the like. As shown in FIG. 2, left and right speaker boxes 17, 17 containing low-middle-range speakers 16 are attached to the inner surfaces of the left and right side plates 12, 12. Each speaker box 17 is formed by assembling a plurality of wooden boards made of MDF or the like with only one side open. The speaker box 17 uses a plurality of attachments 18 and bolts and nuts (none of which are shown) with the open surface facing the side plate 12 and the sound emitting surface of the speaker 16 facing forward. , Are attached to the side plate 12. As described above, in the present embodiment, the outer side wall of the speaker box 17 is constituted by the side plate 12, that is, the side plate 12 is also used as a part of the speaker box 17.

In the center of the pedal base 14, a pedal unit 19 is provided. This pedal unit 1
Numeral 9 includes a pedal unit 20 attached to the lower surface of the pedal base 14, and three pedals 21 attached to the pedal unit 20 so as to be swingable and protruding forward. By depressing these pedals 21 during a performance, a pedal effect similar to that of an acoustic piano can be obtained.

On the other hand, as shown in FIGS. 2 and 3, the lower front plate 15 is formed by assembling a plurality of wooden plates made of MDF, plywood, or the like.
2, the middle plate 23 and the right plate 24, and these plates 22 to 24
And a connecting plate 25 for connecting them, and a pedal front base 26 attached to the lower ends of the back surfaces of the plates 22 to 24. The left plate 22 and the right plate 24 have substantially the same width as the middle plate 23, while the middle plate 23
The middle plate 23 and the back surface are joined in a state where they are flush with each other. The left plate 22 and the right plate 24 are each formed with a sound emission opening 27 having a larger area than the speaker box 17 at a position corresponding to the speaker 16. Further, on the entire front surface of the left plate 22 and the right plate 24, a jersey net 28 for blinding and decoration is attached, and covers the sound opening 27. Further, a cutout 29 for exposing a jack (not shown) disposed on the back side of the lower front plate 15 is formed in the upper left portion of the left plate 22.

The connecting plate 25 is thicker than the plates 22 to 24, and is disposed so as to straddle the middle plate 23 with the upper surfaces thereof flush with each other. It is screwed to the part. On the other hand, the pedal front base 26
The left front plate 15 extends in the left-right direction over substantially the whole thereof, leaving only the left and right ends of the lower front plate 15, and is screwed to the plates 22 to 24. The lower half of the pedal front base 26 protrudes downward from the plates 22 to 24, and three notches 30 for passing the pedal 21 are formed side by side at the center thereof. After the lower front plate 15 is assembled in advance, as shown in FIG. 2, the lower front plate 15 is connected between the front portions of the side plates 12, 12 via a plurality of L brackets 31 attached to the side plate 12 and the pedal base 14. Attached to cover. In this state, as shown in FIG.
The pedal box 20 of the pedal unit 19 is completely covered by the pedal front base 26 of the lower front plate 15.

According to the above configuration, the high-frequency component of the performance sound of the electronic piano 1 is radiated from the left and right high-range loudspeakers arranged on the back side of the jersey net 11, and the low and middle frequency components are changed to the left and right. Speaker box 17, 1
7, the sound emission opening 27 of the lower front plate 15
Through the jersey net 28 and forward. In this case, the speaker boxes 17, 17 are
By being directly attached to the second and the second 12, respectively, they are separated from each other as much as possible, so that a sufficient feeling of the spread of the performance sound can be obtained. Further, since the side plate 12 supporting the speaker box 17 is configured to have high strength and rigidity to support the piano body 2, the degree of vibration caused by the vibration of the attached speaker 16 is very low. Accordingly, since the sounds of the left and right speakers 16 and 16 are radiated in an independent state with little interference with each other, the clarity of the performance sound can be improved.

The lower front plate 15 of the present embodiment is disposed in front of the speaker box 17 and mainly plays a role of guiding the sound of the speaker 16 forward through the sound emission opening 27. The box directly on the lower front plate,
Unlike the conventional case where it is attached, it basically does not affect the performance sound. Therefore, the lower front plate 15 can be made thinner, and the degree of freedom in design can be increased. As described above, in the present embodiment, the left plate 22
And the right plate 24 is made thinner than the middle plate 23, and the jersey net 28 attached to the left plate 22 and the right plate 24 is attached to the middle plate 23.
By making the arrangement deeper, the design of the lower front plate 15 is changed (see FIG. 1).

Further, the side plate 12 is connected to the speaker box 17.
Since it is also used as the outer side wall, the manufacturing cost can be reduced by reducing the number of parts and the number of assembling steps. In addition, since the pedal base 14 and the pedal box 20 are covered from the front by the lower front plate 15 and are completely hidden, makeup such as painting on the pedal base and the pedal box, which has been conventionally performed, becomes completely unnecessary. The manufacturing cost can be further reduced.

The present invention is not limited to the embodiments described above, but can be implemented in various modes.
For example, in the embodiment, the side plate 12 is connected to the speaker box 1.
Although it is also used as one side wall of the speaker 7, the speaker box 17 may be formed in a sealed type in advance independently of the side plate 12. In the embodiment, the size of the sound emission opening 27 of the lower front plate 15 is set to be much larger than that of the speaker box 17. However, as described above, the sound emission opening 27 Since it plays only the role of leading forward, its size may be smaller.
In addition, the width of the jersey net or the like can be reduced accordingly, whereby the degree of freedom in designing the lower front plate 15 can be further increased.

Further, the present invention is not limited to the electronic piano illustrated in the embodiment, but can be applied to other electronic keyboard instruments such as an electronic organ. In addition, the configuration of the details can be appropriately changed within the scope of the present invention.

[0026]

As described in detail above, the stand for the electronic keyboard instrument of the present invention improves the sense of spread and clarity of the performance sound from the speaker, increases the degree of freedom in the design of the lower front plate, and manufactures it. This has the effect that the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of an electronic piano including a stand according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the stand of FIG.

FIG. 3 is a perspective view of the lower front plate of the stand of FIG. 1 as viewed from the rear side.

FIG. 4 is a diagram schematically showing a conventional electronic piano having a speaker.

FIG. 5 is a side sectional view of another electronic piano different from FIG.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 electronic piano (electronic keyboard instrument) 2 piano body (musical instrument body) 3 stand 12 side plate 14 pedal base 15 lower front plate 16 speaker 17 speaker box 20 pedal box 21 pedal 27 sound opening

Claims (3)

[Claims] 1. A stand for an electronic keyboard instrument supporting a main body of a musical instrument, comprising: a left and right side plate supporting the main body of the musical instrument mounted thereon; and a speaker for emitting a performance sound of the electronic keyboard instrument. Left and right speaker boxes respectively attached to the left and right side plates with the sound emission surface of the speaker facing forward, provided on the front side of these left and right speaker boxes so as to cover between the front portions of the left and right side plates, A lower front plate having a sound emission opening at a position corresponding to the speaker; and a stand for the electronic keyboard instrument. 2. The electronic keyboard musical instrument stand according to claim 1, wherein outer side walls of said left and right speaker boxes are respectively constituted by said left and right side plates. 3. The vehicle further comprises: a pedal base provided between the left and right side plates; a pedal box attached to the pedal base; and a pedal protruding forward from the pedal box. The stand for an electronic keyboard instrument according to claim 1, wherein the stand is provided so as to cover the pedal base and the pedal box from the front.