CN2798241Y - Keyboard musical instrument - Google Patents

Abstract

The utility model provides a keyboard instrument can utilize the sound wave that the sound reproduction portion from the stereo set emergence body sent more effectively, and can enjoy the performance sound that has abundant shock power as far as possible, moreover, make the upper cover component can install in the musical instrument main part easily, and then, the counter-force that produces by damping mechanism when preventing to close the switch lid and lead to the fixed part of upper cover component to lift the condition from the musical instrument main part. The keyboard instrument includes: a musical instrument main body having a keyboard provided with a plurality of keys and a sound generator provided behind the keyboard; an upper cover part arranged at the rear of the keyboard in a manner of covering the upper part of the instrument main body, wherein: a sound escaping part arranged on the left and right parts of the upper cover part spaced in the key arrangement direction of the instrument main body; and a back plate vertically arranged on the upper surface of the upper cover part and behind the sound escaping part, wherein the width of the back plate is equal to or more than the whole width of the keyboard in the key arrangement direction, and the height of the back plate is greater than the length of the keys in the length direction.

Description

keyboard instrument

technical field

The utility model takes electronic keyboard instruments (electronic keyboard instruments) such as electronic organ or electronic piano as a starting point, and relates to various keyboard instruments.

Background technique

Electronic keyboard instruments such as electronic organs and electronic pianos generally have a keyboard (keyboard) with a plurality of keys (keys) as performance operators on the upper part of the main body of the instrument, and a keyboard (keyboard) on the lower part of the main body of the instrument. In the speaker, the musical sound signal (musical sound signal) of the pitch selected by the key operation (key operation) of the keyboard is generated by the built-in electronic circuit, which is converted into sound (sound) through the speaker and emits musical sound.

For example, in the electronic keyboard instrument described in JP2002-244661A, a pair of left and right speaker boxes are provided on the lower side of a keyboard shelf (key bed) holding the main body of the instrument.

In addition, for example, as can be seen from JP2002-297141A, there is also an electronic keyboard instrument of the following structure, that is, a part of a loudspeaker as a sound generator (sound generator) is arranged on the upper part of the box of the main body of the instrument (for the high range). A speaker) is formed between the top plate and the keyboard cover on the underside to emit sound from the speaker.

However, in such existing electronic keyboard instruments, any one is a musical instrument that can be heard by the player or the audience from the sound waves emitted from the loudspeaker as the sound generator mainly to the front side of the body (player's side) directly. . In addition, as can be seen in the above-mentioned patent documents, the score panel and the keyboard cover after opening the cover are generally arranged vertically on the upper part of the instrument body, because these are vertically arranged closer to the body than the sound-emitting part, and there is a hindrance from the sound-emitting part. The possibility of sounding from the voice part, but at least you can't get the echo effect.

In addition, in order to make the main body of the instrument thinner, the speakers are arranged so that the vibrating surface is horizontal behind the keyboard. However, in this case, there is a problem that it is difficult for the player to hear the sound from the speaker.

Therefore, in order to solve such a problem, for example, as shown in Japanese Patent JP2720459B, there are also arrangements in which the speakers are arranged in an inclined manner towards the player behind the keyboard. However, since the volume of the speaker box cannot be sufficiently ensured, the acoustic characteristics in the low range especially cannot be improved.

Like this, in existing electronic keyboard instrument, can not fully utilize the sound wave that sends out from the sound emitting part of sound generating body such as loudspeaker effectively, in order to make performer and listener can listen to the performance music that is rich enough and full of power to one's heart's content , there is still room for improvement.

In addition, the instrument body (casing) of a keyboard instrument is generally composed of the following parts, that is, the holding part for holding the keyboard, the side panels on both sides, the back panel at the rear, the mouthpiece on the front side, and the upper cover behind the keyboard. However, in order to fix the rear and front portions of the upper cover member to the back panel and the side panels, a plurality of threaded fixing parts are required. Furthermore, in order to prevent these mounting screw parts from being seen from the outside, the mounting work takes considerable time and labor to screw the lower side with a mounting tool.

Further, there is also an electronic keyboard instrument of the following structure, that is, the upper cover member is composed of a fixed part fixed to the upper part of the instrument main body and a switch cover part of the switch keyboard, and the damping mechanism installed on the instrument main body makes the switch cover part The switch is cushioned, but when the switch cover is closed by the damping mechanism, there is a possibility that the front side of the fixing part is lifted and peeled off from the instrument main body due to a strong reaction force.

Utility model content

The utility model is proposed to improve such problems, and its first purpose is to more effectively utilize the sound waves emitted from the sound emitting part of the sound generating body for keyboard instruments such as electronic keyboard instruments, so as to enjoy the Rich and powerful playing sound.

In addition, the utility model is based on the above-mentioned top cover member being able to be easily installed on the instrument body as the second purpose, and further, to prevent the reaction force generated by the damping mechanism when the switch cover is closed, causing the fixed part of the top cover member to move from the instrument body. The raised case is the third purpose.

According to the first keyboard musical instrument of the present invention, it includes: a keyboard having a plurality of keys, and a musical instrument body having a sound generating body behind the keyboard; In order to achieve the above-mentioned first purpose, the upper cover part is provided with: a tone escape portion (toneescape portion) provided on the left and right parts of the upper cover part separated in the key arrangement direction of the aforementioned musical instrument body; The back plate vertically arranged above and behind the above-mentioned escaping part, the width of the back plate is the same as or more than the entire width of the key arrangement direction of the aforementioned keyboard, and the height of the back plate is greater than the length of the aforementioned keys in the longitudinal direction.

According to the second keyboard musical instrument of the present invention, it includes: a keyboard with a plurality of keys, and a musical instrument body with a sound generating body behind the keyboard; a tone parameter setting operator is arranged and arranged behind the keyboard The operation panel of the group; the top cover member covering the upper part of the instrument body except for the aforementioned keyboard and the operation panel, in order to achieve the above-mentioned first purpose, it is provided with: The escaping parts arranged on the left and right parts; the rear plate vertically arranged on the above-mentioned upper cover member and behind the aforementioned escaping parts, the width of the back plate is the same as or more than the entire width of the key arrangement direction of the aforementioned keyboard.

In the above-mentioned first or second keyboard instrument, the above-mentioned escaping sound part can also be arranged in the following manner, that is, the sound emitted from the speaker box provided below the above-mentioned instrument body is used as a sound formed from the shelf plate of the above-mentioned instrument body. The leakage sound emitted from the through hole is emitted to the outside of the instrument main body through the sound escape portion.

According to the 3rd kind of keyboard musical instrument of the present invention, it has musical instrument main body, and this musical instrument main body is comprised of the holding part that holds the keyboard that has a plurality of keys, side panel (side panel) on both sides, back panel (back panel), key slide Road (key slip) and the upper cover member fixed on the back panel at the rear of the keyboard, in order to achieve the above-mentioned 1st and 2nd purposes, it is achieved by the following method, that is: there is a vertical surface on the aforementioned upper cover member. A rear panel is provided, the width of the rear panel is the same as or more than the entire width of the key arrangement direction of the aforementioned keyboard; the aforementioned back panel and the upper panel are fixed by a fixing member fixed on any one of the aforementioned back panel or the aforementioned upper cover member Cover member; the aforementioned upper cover member is held to the main body of the instrument by fixing the rear portion of the upper cover member with the aforementioned fixing member, while the aforementioned rear plate is installed on the upper cover member and fixed on the aforementioned Instrument body.

According to a fourth keyboard instrument of the present invention, for the same keyboard instrument as above, in order to achieve the above-mentioned first to third purposes, the above-mentioned upper cover member is composed of a fixed part and a switch cover part fixed to the aforementioned musical instrument main body. The switch cover is connected to the fixed part through a hinge part, and forms an open state for opening the aforementioned keyboard and a closed state for covering the aforementioned keyboard, and is provided with: a rear plate vertically arranged above the aforementioned fixed part, and the width of the rear plate is the same as that of the aforementioned The entire width of the key arrangement direction of the keyboard is the same or more; a damping function member that buffers the switch of the aforementioned switch cover.

In addition, the damping function part is composed of a damping mechanism main body mounted on the instrument body and a strut. One end of the strut is rotatably held on the damping mechanism main body, and the other end is rotatably held on the hinge part of the switch cover. The part far away: the above-mentioned fixing part covers the upper part of the musical instrument body other than the keyboard, and fixes the aforementioned back panel and the upper cover member through a fixing member fixed to any one of the aforementioned back panel or the upper cover member.

It is further realized in the following manner, that is, the holding of the aforementioned fixed portion to the instrument body is carried out in the following manner, that is, the rear portion of the fixed portion is fixed with the aforementioned fixing member, and the aforementioned rear plate is installed on the upper surface of the fixed portion And fixed on the instrument body.

According to the 5th kind of keyboard musical instrument of the present utility model, it has, and the musical instrument main body that is equipped with the keyboard of a plurality of keys is installed on frame plate (key bed); The speaker of the tone signal of the tone signal generating part; the operation panel positioned at the rear of the keyboard, in order to achieve the above-mentioned first purpose, it is provided with: the speaker box holding the aforementioned speaker is fixedly arranged under the aforementioned shelf plate of the aforementioned musical instrument main body, from In the speaker box, a through-hole is set on the top of the aforementioned frame plate, and at the same time, above the through-hole, or on the aforementioned operation panel, an escape part is set, or either at the top of the rear of the aforementioned keyboard and the cover of the instrument body. Set the gap between the playback.

For the keyboard instrument, a tweeter can be arranged near the through hole on the shelf.

The speaker box may be configured to function as a foot for supporting the main body of the musical instrument.

The above-mentioned sound escape part or the above-mentioned gap for sound reproduction may be provided in such a manner that the sound from the aforementioned speaker box is sent to the instrument body through the sound escape part or the gap for sound reproduction as leaked sound from the aforementioned through hole. released outside.

According to the first and second keyboard instruments of the present invention, any one of the above-mentioned rear plates becomes a sound reflection plate, and the sound wave emitted from the sound emitting part of the sound generating body to the rear is also reflected forward and effectively used. , so the tone becomes richer, and the feeling of musical expansion can also be achieved. In particular, when the sound emitting part of the tweeter is provided on the upper part of the instrument body, the musical sound emitted from there returns to the player side without being scattered to the rear, so that the musical sound becomes rich. For the tone of the bass, if a hole is provided on the upper surface of the speaker box, the sound wave leaked from there will be released to the upper part of the instrument body through the escape part, and reflected to the player's side through the back plate, so it is different from the sound coming from the speaker. The direct sound overlaps to form a rich sound.

In the second type of keyboard instrument, an escapement part is provided on the surface of the operation panel, so that the time and labor for forming the sound emission hole can be simplified.

According to the 3rd kind of keyboard instrument, add the above-mentioned effect, the rear plate becomes the weight of the upper cover member, so as long as the rear part of the upper cover member is fastened on the back part with screw parts, the front part can be fixed even without screw parts. In the side plate portion, there is no case where the top cover member floats, so the assembly work becomes easy, and cost reduction can also be achieved.

According to the 4th kind of keyboard instrument, and then when closing the switch cover portion of the upper cover member, the front part of the fixed portion is lifted by the damping action of the damping function member with the back plate, and it can be prevented from floating.

According to the fifth keyboard instrument, it is possible to obtain an electronic keyboard instrument in which the player can easily hear the performance sound from the speaker, and has excellent acoustic characteristics especially in the low range. If the loudspeaker for treble is arranged near the above-mentioned through-hole on the frame plate, the player can hear the high-pitched range well.

Description of drawings

Any one of the figures is a figure showing an embodiment of the keyboard instrument according to the present invention, and Fig. 1 is an overall plan view, Fig. 2 is a front view, and Fig. 3 is a side view.

Fig. 4 is an enlarged plan view of the instrument body with the top cover removed.

5 is a schematic perspective view showing a state in which a rear panel constituting a support member of the speaker box is taken out and the relationship of mounting positions of various parts around it.

Fig. 6 is a perspective view showing an attached state between the instrument main body and the speaker box on the right side.

Fig. 7 is a perspective view of a portion provided with a damping function portion viewed obliquely downward from slightly behind with the rear panel removed.

Detailed ways

The best mode for implementing the utility model will be specifically described below according to the accompanying drawings.

Fig. 1 is a top view showing an embodiment of a keyboard musical instrument according to the present invention, Fig. 2 is a front view, Fig. 3 is a side view, and Fig. 4 is a top view showing an enlarged display of the instrument body in a state where the upper cover member is removed .

This embodiment is an electronic keyboard musical instrument that embodies an electronic piano or an electronic organ. As shown in these figures, the electronic musical instrument is composed of the following parts: a musical instrument main body 1 having a plurality of keys, that is, white keys 11w and black keys. The keyboard 10 of 11b has an acoustic generator behind the keyboard 10 ; a support member A supporting the instrument body 1 ; and a rear plate 2 .

The rear panel 2 is located at the rear and both sides of the instrument main body 1, and consists of a pair of vertical panels (vertical panel) 2b extending from the lower position of the support member A to the top of the keyboard 10, and a pair of vertical panels spanning the vertical panel from the upper part of the keyboard 10. Plate 2b and a crossbeam panel (crossbeam panel) 2a connected thereto. This back panel 2 doubles as a trim panel and an echo panel.

The musical instrument main body 1 is equipped with: a frame plate 20 (shown in FIGS. 3 and 4 ) as a holding portion for holding the keyboard 10; side plates 12 on the left and right sides; three back panels 19 shown in FIG. 4 ; The key slideway 13 that is provided with on the front side of the body. Furthermore, a pair of wooden castanets 14 are provided on the left and right sides of the keyboard 10 , and the upper cover member 15 and the back panel 19 are fastened and installed behind the keyboard 10 . In a wooden castanet, a power switch 34 is provided.

As shown in FIGS. 2 and 3 , a pair of left and right front legs 16 for supporting the instrument body 1 are attached to front ends of side plates 12 on both sides of the instrument body 1 . In addition, a metal strut 21 is attached to the back of the frame plate 20 from the inner surface of the middle portion of each front leg 16 via a not-shown attachment. The lower portion of each of the front legs 16 extends to the ground GL, and a caster 22 is attached to the lower end surface thereof.

Between the left and right front legs 16 , behind the keyboard 10 on the lower side of the frame plate 20 , a pair of speaker boxes 3 are provided with the central box portion 17 interposed therebetween. The central box portion 17 is integrally formed with the speaker boxes 3 on both sides thereof to constitute a support member A for supporting the instrument body 1 and also function as a rear leg. Three foot keys 23 are provided on the lower portion of the central box portion 17 .

The horizontal plates 2a of the rear panel 2 provided at the rear of the instrument body 1 have approximately the same width as the support member A, and the vertical plates 2b on both sides thereof have the same height as the upper ends of the respective horizontal plates 2a. The horizontal plate 2 a and each vertical plate 2 b are connected to each other by fixing members (fittings) 27 on the back side, and each vertical plate 2 b and speaker box 3 are also fixed by fixing members (fittings) 28 on the back side.

In addition, the support member A including the speaker box 3 and the lower ends of the vertical plates 2b on both sides thereof are fixed to the upper surface of the joint base member 7 connecting these. In addition, casters 71 are also attached to the lower surface of the coupling base member 7 .

In the pair of speaker boxes 3, the bass speakers 25 for the respective sound generators as shown by broken lines in FIG. 2 are installed facing the front side of the body (player's side). Further, the left and right speaker boxes 3 , whose detailed structure will be described later, have a substantially triangular horizontal cross-section, and are constructed with speaker mounting surfaces facing outward, respectively. In addition, the rear panel 2 as an acoustic reflector, in particular, the left and right vertical panels 2b exist, thereby restricting sound emission to the rear. When it is necessary to improve the backward sound emission characteristics on a stage or the like, the rear plate 2 can also be removed.

The upper cover member 15, in the present embodiment, as clearly shown in FIG. The first opening and closing plate 15b connected to the panel 15a, and the second opening and closing plate 15c connected to the first opening and closing plate 15b via the hinge portion 15e.

The upper panel 15a is connected and fixed to the upper end of the back panel 19 (Fig. 4) through an L-shaped fitting and a fixing member 24 (shown by a dotted line in Fig. 1 ) of a threaded member, and is a fixed part fixed on the instrument main body 1. .

In addition, the opening and closing cover part is constituted by the first opening and closing plate 15b and the second opening and closing plate 15c, and the opening and closing cover part can become the open state of opening the keyboard 10 shown by the solid line in FIG. The off state of the override. At the front end portion of the second opening and closing portion 15c, a cover plate 15f is provided across the entire length in the width direction, and the cover plate 15f covers the front side of the keyboard 10 in the closed state. The first opening/closing plate 15b is connected to a damper function member described later via a strut 46 shown in FIG. 1 . In addition, this opening and closing cover part is not an essential part of this invention.

In addition, at the rear of the keyboard 10, as shown in FIGS. 1 and 4, an operation panel 30 configured with a tone parameter setting operation subgroup 31, a liquid crystal display 32, etc. is designed, because the operation panel 30 also covers the upper part of the instrument body. Therefore, it is called a top cover part together with the top panel 15a of the top cover member 15. On the left and right sides of the operation panel 30, a pair of side panels 18 for hiding the keyboard are provided.

Furthermore, as shown in FIG. 4 , on the left and right portions of the operation panel 30 spaced apart in the key arrangement direction of the instrument body 1 , there are respectively provided sound escape parts 33 . The sound escape portion 33 forms an opening for sound emission in the operation panel 30, and a decorative sheet such as saran net or punched metal can be provided on the panel surface to cover the opening. Alternatively, it may be formed by pressing or punching a metal plate when forming the panel of the operation panel 30 . In this way, it is possible to simplify the time and labor for forming the sound emission hole.

FIG. 4 is a view of the keyboard musical instrument of this embodiment from above in a state where the upper cover member 15 is removed, and the shelf 20 can be seen behind the operation panel 30 . The rear end portion of the operation panel 30 is fixed to the shelf plate 20 by support fittings 111 at a plurality of positions.

In this embodiment, a part of the frame plate 20 doubles as the upper plate of each speaker box 3 . The underside of this shelf board 20 is provided with the support member A that is made of the speaker box 3 of the central box body part 17 and its two sides, and the 17a shown with the dotted line is the front panel of the central box body 17, and 3a is the sound proof of the speaker box 3. plate. On the front surface of this front panel 17a and the soundproof board 3a, although illustration is omitted, the saran net which has thickness is pasted in the shape of a curved surface.

On the upper surface corresponding to the central box portion 17 of the frame plate 20 and the adjacent parts of the central box portion 17 of the pair of speaker boxes 3, a plurality of electric circuit blocks 26 are mounted, and on each speaker 3 other than these A plurality of through holes 20a penetrating from the inside of the speaker box 3 to the upper surface of the frame plate 20 are formed in the area corresponding to the part where the sound escapes are also formed. Therefore, the sound wave coming from the bass speaker 25 in each speaker box 3, as shown by the arrow mark Y10 in Figure 2, is radiated forward, as shown by the dotted line arrow mark Y11, it is also radiated upwards and backwards, as shown in Figure 4 As indicated by the solid line arrow Y11, it passes through a plurality of through holes 20a of the shelf plate 20 which is also used as the upper plate of the speaker box, and is discharged into the space between the operation panel 30 and the upper panel 15a on the upper part thereof, Further, it radiates upward and forward from the sound escape part 33 of the operation panel 30 as indicated by the arrow Y12.

In addition, as shown in Figure 1 and Figure 4, in the vicinity of the through hole 20a on the frame plate 20, in the space between the inner side of the operation panel 30, a pair of left and right loudspeakers (high frequency speakers) as sound generators The speaker/tweeter) 35 is disposed at a slight inclination such that the central line of sound emission faces forward and slightly upwards and crosses each other. Therefore, the sound wave shown by the arrow Y21 in FIG. 4 emitted from the tweeter 35 also passes through the sound escape part 33 of the operation panel 30, and is radiated upward or forward as indicated by the arrow 22.

The rear plate 2 is arranged vertically on the upper surface of the upper panel 15a of the upper cover member 15 and behind the sound escape part 33 of the operation panel 30 as the upper cover part, and has an arrangement of white keys 11w and black keys 11b not smaller than the keyboard 10 The width of the entire width in the direction, and the height greater than the length in the length direction of the key. The length of the key in this case is the length of the white key 11w, and may be the length of only the visible portion that leaks out, or the length including the invisible rear end portion hidden in the operation panel 30 . Furthermore, in the case of having an opening and closing cover (the first and second opening and closing plates 15b, 15c) as in this embodiment, as shown in FIG. The height of the rear plate 2 becomes higher.

Like this, owing to being provided with back plate 2, the direct sound that sends from loudspeaker 25,35 is reflected by back plate, and the reflected sound that direct sound and phase deviate slightly pass to the performer. Therefore, the player hears the mixed sound of the direct sound from the speaker and the reflected sound slightly shifted in phase, and can hear an aurally improved sound.

In addition, in this embodiment, the rear plate is composed of one horizontal plate 2a having a width smaller than the entire width in the key arrangement direction of the keyboard 10, and two vertical plates 2b sandwiching the horizontal plate, and any one of them is made of wood. of. In addition, the horizontal plate 2a is placed on the upper surface of the upper panel 15a, and plays the role of a sound reflection plate for the sound waves emitted from the sound escape part 33, and can also play the role of a weight for the upper panel 15a. The upper part of the two vertical boards 2b also functions as an acoustic reflection board similarly to the horizontal board 2a. In addition, the lower portion also functions as an acoustic reflection plate for the rotation of sound waves radiated forward from the woofer speaker 25 .

In addition, the rear plate 2 may also be composed of a horizontal plate and a pair of vertical plates, and the horizontal plate has a width not smaller than the entire width of the key arrangement direction of the keyboard 10 and a length greater than the length direction of the white keys 11w. Height, the longitudinal plate supports the transverse plate with the upper end surface.

According to this embodiment, the rear plate 2 can not only improve the decorativeness of the electronic keyboard instrument, but also serve as an acoustic reflection plate for the sound waves emitted from the escaping part 33, etc., so that the musical tone becomes rich and the feeling of musical expansion is achieved. In particular, the musical sound emitted from the tweeter 35 returns to the player without diverging, so that the musical sound becomes rich. Even for low-pitched musical tones, the sound waves that leak out through the through holes 20a and the sound escape portion 33 of the upper shelf plate 20 constituting the speaker box 3 are reflected forward, or the sound waves radiated to the front of the speaker box 3 are also detoured backward. Since the direct sound is reflected by the vertical plate 2b, the direct sound and the reflected sound are superimposed to form a rich musical sound.

In addition, the upper cover member 15 may be only a fixed upper panel 15a covering the upper part of the musical instrument body 1 other than the keyboard 10 and the operation panel 30. In this case, the upper panel 15a and the operation panel 30 constitute the upper cover. The operation panel 30 is provided between the keyboard 10 and the upper panel 15a.

In the case where an opening and closing cover is provided on the upper cover member 15, in the open state of the keyboard 10, if a part of the sound escape part 33 of the operation panel 30 is exposed on the front side of the second opening and closing plate 15c, , the remaining most exposed in the rear of the first opening and closing plate 15b, then can obtain the sufficient sound reflection effect by the rear plate 2.

In addition, in this embodiment, the back panel 19 and the upper panel 15a are fixed by the fixing member 24 fixed on any one of the upper panel 15a of the back panel 19 or the upper cover member 15, and the upper panel 15a is fixed to the instrument body 1. The holding is achieved by fixing the rear part of the upper panel 15a by the fixing member 24, while the horizontal plate 2a of the rear panel 2 is placed on the upper panel 15a and fixed on the instrument body 1.

Therefore, when the upper panel 15a that covers the upper surface of the instrument main body 1 and hides it is fixed on the back panel 19, if the rear panel 2 is placed on the upper panel 15a, the rear panel becomes a weight block, so it is possible to reduce the cost caused by the fixing member 24. Where the thread is fixed, even if the place where the thread is fixed is reduced, it will not cause falling off. In addition, those assembling operations can also be easily performed.

Next, the structure of the supporting member constituting the speaker box and its mounting state on the instrument body will be described in detail with reference to FIGS. 5 and 6 .

As shown in FIG. 5 , a pair of left and right speaker boxes 3 are integrally provided on both sides of the central box portion 17 . A soundproof plate 3 a forming a speaker mounting hole 3 b is provided on the front surface of each speaker box 3 , and a front plate 17 a is provided on the front surface of the central box portion 17 . On the front of this front panel 17a and the soundproof panel 3a, as mentioned above, a saran net is pasted. In addition, rear panels 19 are respectively attached to the central box portion 17 and the rear surfaces of the respective speaker boxes 3 .

Further, at the lower portion of the central box portion 17, a horizontal plate crossing member 52 is provided that spans between the partition plates of the speaker boxes 3 on both sides. In addition, the pair of speaker boxes 3 , the central box portion 17 , the horizontal plate cross member 52 , and the back panel 19 are assembled integrally to form a support member A for supporting the instrument body 1 .

To this support member A, in the central box body part 17, the electric circuit part 8 (shown by the dotted line in Fig. ). In addition, the control unit 81 is constituted by an electronic circuit board that emits digital musical sound signals, such as a CPU or a sound source chip. In addition, the transformer 82 of the electric circuit section 8 is placed and fixed on the horizontal plate cross member 52 .

A foot key holding frame 83 is attached to the lower space of the horizontal plate cross member 52, and the three foot keys 23 shown in FIG. 2 are supported swingably by the foot key holding frame 83. In addition, the operation portion of the foot key 23 is exposed to the player side through the foot key opening 17b ( FIG. 2 ) formed in the lower end portion of the front panel 17a.

As shown in FIG. 6, a stepped portion (one side of a large cutout) 1a is formed on both sides of the rear portion of the instrument body 1, and the stepped portion 1a abuts against a vertical plate 2b of the rear plate 2, which is in the lower end portion. It is fixed by joining the fixing fitting 72 on the side of the base member 7 . As for the rear part of the instrument body 1, the portion from the stepped portion 1a to the central side is a protruding and rectangular connection box portion 1b to which the speaker box 3 is connected. The width w1 (shown in FIG. 5 ) of the connection box portion 1b has the same width as that of the support member A on which the connection box portion 1b is placed and fixed. In addition, the frame plate 20 of the musical instrument body 1 and the speaker box 3 of the supporting member A are fixed by an L-shaped mounting bracket 29 at the upper end of the speaker box 3 shown in FIG. 5 .

The rear end portion of the operation panel 30 is fixed to the frame plate 20 via the support fitting 111 . The support fitting 111 is plate-shaped, the lower piece 111a and the upper piece 111b are reversely bent in the horizontal direction, the lower piece 111a is fixed on the frame plate 20 , and the upper piece 111b is fixed on the rear end of the operation panel 30 .

In addition, a keyboard frame including a rib 113 placed along the width direction of the instrument body 1 is mounted on the frame plate 20, and the frame plate 20 is mounted with a screw member from above the projections 112 provided at intervals on the rib 113 toward the frame plate 20. fixed. The keyboard frame is a frame supporting the keyboard 10, and its detailed description will be omitted.

In the space between the shelf plate 20 and the operation panel 30 , the tweeter 35 is mounted on the mounting plate 50 and arranged.

The other parts shown in Fig. 5 and Fig. 6 have already been explained based on other figures, so the explanation will be omitted here. In addition, in FIG. 6, although the upper panel 15a of the upper cover member 15 is divided into two upper panels 15a1, 15a2, as shown in FIG. 3 and FIG.

Fig. 7 is a perspective view of the part provided with the damping function part of the present embodiment as viewed obliquely downward from slightly behind with the rear panel removed.

The keyboard musical instrument of this embodiment has a damping function member 40 for buffering the opening and closing operation of the opening and closing cover portion composed of the first and second opening and closing plates 15b, 15c connected to the upper panel 15a of the upper cover member 15.

In FIG. 7, the second opening and closing plate 15c of the upper cover member 15 is omitted from illustration, and the back plate 19 is left and removed in part. Reference numeral 20 denotes a frame plate screwed to the inner side of the side plate 12 by means of an L-shaped fitting 37 , and the above-mentioned keyboard 10 is held by the frame plate 20 .

The side portion of the operation panel 30 is supported and fixed by an operation panel support member 38 bent into a crank arm shape and screwed to the inner surface of the side plate 12 .

That is, the mounting piece 38d bent parallel to the panel from the arm portion 38c of the operation panel support member 38 is screwed to the protrusion portion 30a formed on the back of the operation panel 30, and the operation panel 30 and the operation panel support member 38 are integrated. , the base of the operation panel support member 38 is screwed to the side panel 12 .

A loosening hole 38b is provided in the vertical portion 38a of the operation panel supporting member 38, and the lower part 39a of the U-shaped reverse movement prevention fitting 39 fixed to the lower surface of the upper panel 15a is fitted into the loosening hole. 38b, so that the reverse movement of the upper panel 15a when the first opening and closing plate 15b is opened and closed is prevented.

The lower part 39a of the reverse movement preventing fitting 39 is, for example, formed in a shape inclined downward as it moves toward the front end, and the distance D1 from the upper edge of the loosening hole 38b to the bottom of the upper panel 15a is the same as the distance D1 from the lower part 39a. The relation of the distance D2 from the mounting nail to the lower surface of the upper panel 15a is set so as to satisfy the relation of D1>D2 (the difference is 0 to 2mm). In this configuration, the upper panel 15a and the instrument main body 1 can be connected at once by pressing operation from the front to the rear. In this state, when screwing from the rear of the L-shaped fixing member 24 shown by the dotted line in FIG. and upper panel 15a. However, these are not essential parts of the present utility model.

The damping function component 40 is arranged in the recess 12a formed on the inner side of the side plate 12 of the instrument main body 1, and it is composed of the following parts: a damping unit 41 installed on the instrument main body 1; Damping mechanism main body 44; strut 46, one end of which is rotatably held on the lever 43 of this damping mechanism main body 44 by shaft 45, and the other end is rotatably held on the hinge portion of the first opening and closing plate 15b from the opening and closing cover portion 15d on the part left.

The wooden castanet 14 is fixed on the instrument main body 1 through the wooden castanet connection member 47 installed on the inner surface of the side plate 12 .

In this case, as the holding of the upper panel 15a of the fixed part to the instrument main body 1, it is realized in the following manner, that is, the rear part of the upper panel 15a is fixed with the fixing member 24 shown in FIG. 2 placed on the upper panel 15a and fixed on the instrument body 1.

In this way, not only the above-mentioned effects can be obtained, but also the lifting of the upper panel caused by its reverse movement when the closing action of the first opening and closing plate 15b as the opening and closing cover part is buffered by the damping function of the damping function member 40. The phenomenon of the front part of 15a is suppressed by the rear plate 2, and this phenomenon of lifting can be prevented.

Further, as its assistance, the upper panel 15a and the operation panel supporting member 38 are connected by the reverse movement preventing fitting, whereby the upper panel 15a as the fixed part is always locked on the instrument main body 1, so it is possible to further reliably prevent Lifting phenomenon of the upper panel 15a when closing the opening and closing cover.

In addition, the shape, size, material, divisional structure, etc. of the rear plate are not limited to those shown in the examples, and of course can be arbitrarily changed and obtained.

According to the above configuration, the instrument body 1 is supported by the pair of left and right front legs 16 fixed to the front end portion of the side plate 12 and the support member A at the rear. The up and down dimensions of the speaker box 3 extending to the ground need to be large, and a large volume can be ensured in the up and down direction. Therefore, the acoustic characteristics especially in the low range become favorable. In addition, the sound coming from the back of the speaker 25 for bass is transmitted from the speaker box 3 to its upper part, passes through a plurality of through holes 20a of the frame plate 20, is introduced into the connection box part 1b of the instrument main body 1, and passes through the opening of the operation panel 30. The sound escape part 33 (a plurality of through holes) releases the sound to the player's side.

Therefore, the player can hear musical tones with good bass characteristics. Furthermore, the sound from the tweeter 35 is also emitted from the sound escape part 33 of the operation panel 30 . Therefore, the acoustic characteristics in the middle and high ranges are also improved.

Furthermore, the thickness of the speaker box 3 in the front-rear direction is thin, and the instrument body 1 and the keyboard instrument as a whole become thinner in the front-rear direction.

In addition, the center box part 17 is provided in the left and right speaker boxes 3, and the foot button 23 is provided at the lower part thereof, so the stability of the foot button 23 in the direction of entering the inside becomes high, and the foot operation is also easy. That is, the lower end of the speaker box 3 connected to the central box portion 17 is fixed on the ground by the weight of the instrument, so the foot key holding frame 83 shown in FIG. 5 is fixed, and the foot key 23 is stable.

For example, there has been a structure in which a rod-shaped member hangs from the lower surface of the frame plate at a position at a considerable distance from the ground at the lower part of the instrument body, and a pedal device is installed thereunder, but, unlike this structure Compared with the foot key that enters in the direction of the inside, it is more stable. Furthermore, because of the weight of the electric circuit part 8 accommodated in the central case part 17, such as the transformer 82, the stability of the operation of the foot key 23 is further improved, and the stability of the instrument body is also improved.

All the electrical circuit blocks 26 on the frame plate 20 shown in FIG. 4 may also be accommodated in the central box portion 17 .

Moreover, since various electric circuit blocks are accommodated in the center box part 17, the sound of the left and right speakers 25 can be separated favorably, and especially bass characteristic becomes favorable. Further, because the weight of the lower part of the central box part 17 becomes larger, the vector becomes inward (towards the front) when the supporting member A (rear foot) is about to fall down, and the center of gravity of the whole musical instrument drops, even if it is thin. It is not easy to fall down.

In this embodiment, since the coupling base member 7 is attached across the lower surfaces of the center box portion 17 and the left and right speaker boxes 3, the support member A as a whole becomes a strong member. However, the bonding base member 7 is not essential.

Although the sound escape part 33 in this embodiment is composed of a plurality of through holes, as long as it can prevent foreign matter from entering and can emit sound, any shape can be used. In addition, the material of the part forming the sound escape part 33 is not limited to metal, and may be molded with resin integrally with the operation panel 30 .

In addition, although the sound emitted from the through hole 20a formed on the frame plate 20 which also serves as the upper plate of the speaker box 3 is emitted from the sound escape part 33 of the operation panel 30 to the player's side, the sound escape part 33 is replaced by the sound emitted from the sound escape part 33. , also can be at the back of keyboard 10 and between operating panel 30 or top cover member 15, be provided with the gap that is communicated with through hole 20a, the sound that emits from through hole 20a is released to player's side from this gap that is played. sound. Furthermore, both the escape part 33 and the gap for sound emission may be provided, and sound may be emitted from both.

The gap for sound emission can be configured as follows, for example. In the electronic keyboard instrument of this embodiment, it is also possible to divide the upper panel 15a covering the rear portion of the operation panel 30 of the instrument main body 1 into two parts, at least one of which is higher than the top of the operation panel 30, and the upper panel 15a A gap for sound reproduction is formed between the vertical portion of the panel 30 and the rear portion of the operation panel 30 . In this case, the operation panel 30 may be extended rearward to be submerged under one of the upper panels 15a, and the gap for sound emission may communicate with the connection box portion 1b as shown in FIG. 6 .

In addition, in the above-mentioned embodiment, although the preferred example in which the tweeter 35 is provided in the vicinity of the through-hole 20a on the frame plate 20 has been described, the tweeter 35 may be eliminated.

In addition, the horizontal cross-sectional shape of the support member A is trapezoidal, and the speakers 25 are installed on the slopes of the trapezoid (soundproof board 3a), so the acoustic characteristics of the two speakers 25 become a heart shape open to the front, so it can also be suitable for the stage. The performance of the wide places such as.

In addition, in the keyboard instrument of this embodiment, the pair of vertical plates 2a of the rear plate 2 are fixed detachably with respect to the instrument body 1, so the design of the decorative plate can be selected according to the user's order.

In addition, in this embodiment, the electric circuit part 8 is fixed on the rear panel 19, and the maintenance work on the internal electric circuit part 8 can be easily performed only by removing the front panel 17a. Moreover, when the electric circuit part 8 is fixed to the front panel 17a, maintenance can be performed by removing the back panel 19. FIG.

The present invention can be applied to various electronic keyboard instruments such as electronic organ or electronic piano, but it is not limited thereto, and can also be extended and applied to keyboard instruments such as natural musical instruments such as organ or upright piano.

Claims (6)

1. A keyboard musical instrument comprising: a keyboard having a plurality of keys, a musical instrument body having a sound generating body behind the keyboard; , characterized in that the setting has: The escapement part provided on the left and right parts separated in the key arrangement direction of the instrument body in the upper cover part; The back plate vertically arranged on the top of the above-mentioned upper cover part and behind the above-mentioned escaping part, the width of the back plate is the same as or more than the entire width of the key arrangement direction of the aforementioned keyboard, and the height of the back plate is greater than the length direction of the aforementioned keys length. 2. The keyboard instrument according to claim 1, wherein the above-mentioned escaping sound portion is arranged in such a way that the sound emitted from the speaker box provided below the above-mentioned musical instrument main body is used as a The leakage sound emitted from the formed through-hole is emitted to the outside of the instrument main body through the sound escape portion. 3. A keyboard musical instrument comprising: a keyboard with a plurality of keys, a musical instrument body having a sound generating body behind the keyboard; an operation panel provided with a tone parameter setting operation subgroup behind the keyboard The upper cover member covering the upper part of the aforementioned musical instrument body except for the aforementioned keyboard and the aforementioned operating panel, characterized in that it has: the escaping parts provided on the left and right parts spaced apart in the key arrangement direction of the aforementioned instrument body in the aforementioned operation panel, The rear plate vertically arranged on the upper surface of the upper cover member and behind the escaping part, the width of the rear plate is equal to or greater than the entire width of the keyboard in the key arrangement direction. 4. The keyboard instrument according to claim 3, wherein the above-mentioned escaping sound portion is arranged in such a way that the sound emitted from the speaker box provided below the above-mentioned musical instrument main body is used as The leakage sound emitted from the formed through-hole is emitted to the outside of the instrument main body through the sound escape portion. 5. A keyboard musical instrument having a musical instrument main body, the musical instrument main body being fixed to the aforementioned back panel by a holding portion for holding a keyboard having a plurality of keys, side panels on both sides, a back panel, key slides, and the rear of the aforementioned keyboard constituted by an upper cover member, the keyboard instrument is characterized in that, having a rear panel vertically arranged above the aforementioned upper cover member, the width of which is equal to or greater than the entire width of the aforementioned keyboard in the key arrangement direction, Fixing the aforementioned back panel and the upper cover member by means of a fixing member fixed to any one of the aforementioned back panel or the aforementioned upper cover member, The holding of the aforementioned upper cover member to the aforementioned musical instrument body is carried out by fixing the rear portion of the aforementioned upper cover member with the aforementioned fixing member, while the aforementioned rear plate is installed on the upper surface of the upper cover member and fixed to the aforementioned musical instrument body . 6. A keyboard musical instrument having a musical instrument main body, the musical instrument main body being fixed to the aforementioned back panel by a holding portion for holding a keyboard having a plurality of keys, side panels on both sides, a back panel, key slides, and the rear of the aforementioned keyboard constituted by an upper cover member, the keyboard instrument is characterized in that, The above-mentioned upper cover member is composed of a fixed part fixed to the main body of the musical instrument and a switch cover part, the switch cover part is connected to the fixed part through a hinge part, and forms an open state for opening the aforementioned keyboard and a closed state for covering the aforementioned keyboard, Equipped with: a rear plate vertically arranged on the upper surface of the aforementioned fixing part, the width of the rear plate is equal to or greater than the entire width of the key arrangement direction of the aforementioned keyboard; a damping function member for buffering the switch of the aforementioned switch cover part, The damping function part is composed of a damping mechanism main body mounted on the musical instrument main body and a strut, one end of the strut is rotatably held on the damping mechanism main body, and the other end is rotatably held at a position away from the hinge portion of the switch cover. part, The aforementioned fixing portion covers the upper part of the aforementioned musical instrument body other than the aforementioned keyboard, and fixes the aforementioned back panel and the upper cover member through a fixing member fixed to any one of the aforementioned back panel or the aforementioned upper cover member, The aforementioned fixing portion holds the aforementioned instrument body by fixing the rear portion of the fixing portion with the aforementioned fixing member, while the aforementioned rear plate is mounted on the fixing portion and fixed to the aforementioned instrument body.

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