JP2005266176A - Electronic keyboard instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic keyboard instrument having a more compact and instrument-like appearance without impairing sound quality and operability.
SOLUTION: A keyboard device 10 having a shelf board 4 and a plurality of keys 13 disposed above the shelf board 4 and supported by the shelf board 4 and extending in the front-rear direction and arranged in the left-right direction. And a speaker 5 that is arranged between the shelf board 4 and the keyboard device 10 and emits a performance sound when the key 13 is depressed, and a mouth stick 8 that extends in the left-right direction so as to cover the front surfaces of the plurality of keys 13. An operation panel 40a provided below the mouth bar 8 and disposed on the back side of the front end of the mouth bar 8, and provided on the operation panel 40a for setting a predetermined performance function for controlling performance. The operation element 43 is operated.
[Selection] Figure 2

Description

  The present invention relates to an electronic keyboard instrument, and more particularly to a configuration of a musical instrument main body having a keyboard device and a speaker.

  As a conventional electronic keyboard instrument, for example, one disclosed in Patent Document 1 is known. The electronic keyboard instrument includes a keyboard and a panel surface disposed on the back side thereof, and a number of switches are provided on the panel surface. In addition, a switch is also provided in the front end portion of the mouth stick portion, and by operating the switches on the panel surface and the mouth stick portion, the electronic keyboard instrument can be played at various rhythms.

  7 and 8 show a conventional general electronic keyboard instrument. The electronic keyboard instrument 90 of FIG. 7 includes a musical instrument main body 91 and a stand 92 that supports the musical instrument main body 91. The musical instrument main body 91 includes a shelf board 93, a keyboard device 94 and a speaker 95 provided on the shelf board 93. Have. The keyboard device 94 is provided at the front portion of the shelf plate 93, and the speaker 95 is provided at a position behind the keyboard device 94 of the shelf plate 93 with its sound emitting surface directed downward. As the 94 key 94 a is depressed, a performance sound is emitted from the sound emission surface of the speaker 95.

  8 includes a musical instrument body 97, a stand 98 that supports the musical instrument body 97, and a speaker box 99. The musical instrument main body 97 has a shelf board 100 and a keyboard device 101 provided on the shelf board 100, and a speaker box 99 is provided below the shelf board 100, and a sound emitting surface is directed forward in the interior thereof. The speaker 102 is provided in the state. The speaker 102 emits a performance sound as the key 101a of the keyboard device 101 is pressed.

  Further, as a conventional electronic keyboard instrument in which speakers are arranged in a layout different from those of the electronic keyboard instruments 90 and 96, for example, one disclosed in Patent Document 2 is known. The musical instrument main body of this electronic keyboard instrument has a shelf board, a keyboard provided on the top surface thereof, and speakers provided behind the keyboard on the top surface of the shelf board and below the shelf board. The speaker behind the keyboard is arranged so that its sound emitting surface faces the front player side. In addition, the speakers below the shelf are respectively disposed in the left and right speaker boxes, and their sound emitting surfaces are directed to the player side in front. These speakers emit performance sounds as the keys on the keyboard are pressed.

  In general, an electronic board for a sound source / amplifier is provided near the speaker of the electronic keyboard instrument described above, and an electronic board for a switch is provided inside the electronic keyboard instrument near the switch. A performance sound that is connected and generated according to a performance function such as a rhythm set by a switch is emitted from the speaker.

  In addition, since the performance sound in the high range has a relatively strong directivity, an electronic keyboard instrument having a speaker with a sound emitting surface facing downward like the electronic keyboard instrument 90 described above reaches a performer or the like. It may be difficult. For this reason, a tweeter for high sounds may be provided in order to reinforce the performance sound in the high sound range.

  The electronic keyboard instrument of Patent Document 1 described above has the following problems. That is, in this electronic keyboard instrument, a large number of switches are arranged on the panel surface on the back side of the keyboard, and such switches are not normally present in acoustic keyboard instruments. The switch gives the electronic keyboard instrument an uncomfortable feeling that is not like a keyboard instrument.

  Further, the above-described general electronic keyboard instrument and the electronic keyboard instrument of Patent Document 2 have the following problems. That is, in these electronic keyboard musical instruments, in order to secure a space for providing a speaker, the musical instrument main body is extended in the front-rear direction, or a speaker box is provided below the musical instrument main body. In the musical instrument, since both of these are performed, the manufacturing cost is increased correspondingly, and the size of the keyboard instrument, particularly the musical instrument main body, is increased, which requires a larger installation area.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an electronic keyboard instrument having a more compact and instrument-like appearance without impairing sound quality and operability.

Japanese Patent Publication No. 7-107638 (Pages 2, 5 and 1) Japanese Patent Laid-Open No. 7-248767 (Page 4, FIGS. 1 and 3)

  In order to achieve this object, the invention according to claim 1 of the present invention is arranged so as to be arranged above the shelf board and supported by the shelf board, extend in the front-rear direction, and line up in the left-right direction. A keyboard device having a plurality of keys provided, and a speaker that is disposed between the shelf board and the keyboard device and emits a performance sound when the key is depressed.

  According to this electronic keyboard instrument, a keyboard device having a plurality of keys provided so as to be arranged in the left-right direction is supported above the shelf board. In addition, a speaker is arranged between the shelf board and the keyboard device with the sound emitting surface facing downward, and this speaker emits a performance sound as the key of the keyboard device is pressed. Sound. According to such a configuration, since the speaker is arranged in the space between the shelf board and the keyboard device, a configuration for providing the speaker below the shelf board or behind the keyboard device becomes unnecessary. Accordingly, the manufacturing cost can be reduced and the electronic keyboard instrument can be made compact.

  According to a second aspect of the present invention, in the electronic keyboard instrument according to the first aspect, a predetermined interval corresponding to the height of the speaker is provided between the keyboard device and the shelf board. And a keyboard device support member that supports the device in a state in which it is held.

  According to this electronic keyboard instrument, the keyboard device is supported by the keyboard device support member with a space corresponding to the height of the speaker between the shelf plate, and thereby the shelf plate, the speaker, and the keyboard. The devices are arranged in the vertical direction with almost no gap. Accordingly, the electronic keyboard instrument can be made more compact by minimizing its height.

  In addition, since the speaker and the keyboard device are arranged almost without any gap, the performance sound emitted from the speaker passes through the gaps between a plurality of keys arranged in the left-right direction, and directly to the performer or the like. To reach. Since the gap between keys is very narrow, high-frequency sounds with short wavelengths tend to pass through this gap. Therefore, the sound quality in the high sound range can be improved as compared with the prior art, particularly when the performance sound in the high sound range reaches the performer or the like directly from the speaker. Furthermore, the improvement of the sound quality in the high sound range eliminates the need for a high-frequency tweeter that has been used in the past, so that the manufacturing cost can be further reduced accordingly.

  According to a third aspect of the present invention, in the electronic keyboard instrument according to the first or second aspect, the electronic keyboard instrument is provided between the shelf board and the plurality of keys, and is rotatably supported by a fulcrum at one end portion in the front-rear direction. A main portion extending in the front-rear direction from the fulcrum to the other end side, further comprising a plurality of hammers that rotate when the corresponding key is pressed, and the speaker is opposite the main portion of the hammer with the fulcrum in between It is arranged on the side.

  According to this electronic keyboard instrument, a plurality of hammers that are rotated by pressing a key are provided between the keyboard device and the shelf board. Each hammer is rotatably supported by a fulcrum at one end, and the main part extends in the front-rear direction from the fulcrum to the other end, and the speaker is opposite to the main part of the hammer with this fulcrum in between. Is arranged. According to such a configuration, since the speaker is disposed at a position avoiding the space where the main part of the hammer between the shelf board and the keyboard device rotates, the rotation of the hammer is not obstructed, and the electronic The keyboard instrument as a whole can be made more compact.

  According to a fourth aspect of the present invention, there is provided a musical instrument main body having a plurality of keys, a keyboard lid that is detachably provided on the musical instrument main body, and that supports the musical instrument main body. And a stand having a keyboard lid mounting portion for detachably mounting the keyboard.

  According to this electronic keyboard instrument, the instrument body having a plurality of keys is supported by the stand. In addition, the electronic keyboard instrument is provided with a keyboard lid for opening and closing a plurality of keys in a detachable manner on the instrument body, and a keyboard lid for detachably attaching the keyboard lid to the stand. A mounting portion is provided. According to such a configuration, for example, when the keyboard lid is removed from the instrument body during performance, the removed keyboard lid can be attached to the keyboard lid attachment portion of the stand and stored. Thereby, it is not necessary to store the keyboard cover removed from the instrument body in another place during performance or to lean against the instrument body or a wall. Therefore, it is possible to prevent the keyboard cover from being lost or damaged, and the instrument body or the stand from being damaged by the keyboard cover.

  According to a fifth aspect of the present invention, in the electronic keyboard instrument according to the fourth aspect, the stand has a back plate that extends in the left-right direction below the rear portion of the instrument body and has a keyboard lid mounting portion. The keyboard lid has an engaging portion to which a felt is attached, and is attached to the back plate in a state where the engaging portion is engaged with the keyboard lid attaching portion via the felt.

  According to this electronic keyboard instrument, the keyboard lid has an engaging portion to which a felt is attached. In addition, the stand is provided with a back plate extending in the left-right direction below the rear portion of the instrument body. The keyboard lid engages with the keyboard lid mounting portion of the back plate via the felt. It is attached to the back board in the state that was done. As a result, when the keyboard cover is attached to the back plate, a felt is interposed between the keyboard cover engaging portion and the back plate keyboard cover mounting portion during performance. Since the lid can resonate and the keyboard lid can be prevented from vibrating due to an impact when the key is strongly pressed, etc., it is possible to prevent the occurrence of noise due to the resonance and vibration during performance. In addition, in a state where the keyboard cover is attached to the back plate, the keyboard cover is disposed below the rear part of the instrument body, so that a space between the installation surface of the electronic keyboard instrument and the instrument body is secured. The performer can perform in a normal posture without the keyboard lid getting in the way.

  The invention according to claim 6 of the present invention includes a shelf board, a keyboard device having a plurality of keys and supported by the shelf board, a mouth bar extending in the left-right direction so as to cover the front surfaces of the plurality of keys, and a mouth An operation panel provided below the bar and disposed behind the front end of the mouth bar, and an operator provided on the operation panel and operated to set a predetermined performance function for controlling performance And.

  According to this electronic keyboard instrument, a mouth stick extending in the left-right direction is provided in front of the keyboard instrument having a plurality of keys supported by the shelf so as to cover the front surfaces of the plurality of keys. An operation panel is disposed below and further to the back than the front end. The operation panel is provided with an operation element. By operating the operation element, a predetermined performance function for controlling the performance such as the volume and tone color of the performance sound is set.

  According to such a configuration, since the operation panel is hidden by the mouth stick, the operation panel and the operator are less visible to the player than the panel surface and switches of the conventional electronic keyboard instrument. As a result, the player feels uncomfortable with the appearance without omitting the operation panel and controls for setting the performance functions unique to the electronic musical instrument, that is, without impairing the performance function and operability as an electronic musical instrument. Without making it, you can give an impression more like a keyboard instrument.

  According to a seventh aspect of the present invention, in the electronic keyboard instrument according to the sixth aspect, the speaker provided on the shelf board, and provided on the shelf board and connected to the operating element and the speaker, are used to press the key. Along with this, there is provided an electronic board for generating a performance sound corresponding to a predetermined performance function set by an operator and causing the speaker to emit sound.

  According to this electronic keyboard instrument, a speaker and an electronic board are arranged on the shelf board, and the performer can perform performance functions such as the tone color of the performance sound by operating an operator connected to the electronic board. Set. Then, by pressing the key, a performance sound corresponding to the set performance function is generated by the electronic board, and the performance sound is emitted from a speaker connected thereto.

  According to such a configuration, the electronic board and the speaker are both provided on the shelf board and arranged at positions close to each other, and the electronic board is connected to both the operator and the speaker for setting the performance function. Therefore, it is possible to arrange the electronic boards for both close to each other. Therefore, since the wiring for connecting the two substrates can be shortened or unnecessary, the manufacturing cost can be reduced correspondingly, and the generation of electromagnetic waves due to the generation of current in the wiring can be suppressed. Can do.

  According to an eighth aspect of the present invention, in the electronic keyboard musical instrument according to the sixth or seventh aspect, the operation unit has a darker color than the mouth stick.

  According to this electronic keyboard instrument, since the operation unit has a darker color than the mouth stick, the operation part can be made inconspicuous in combination with being arranged below and behind the mouth stick. it can. Therefore, since the operation panel and the operation element provided on the operation panel become inconspicuous, an appearance closer to that of an acoustic keyboard instrument can be obtained.

  The invention according to claim 9 of the present invention provides a shelf board inclined downward toward the back side, a keyboard apparatus support member provided on the shelf board, and a keyboard apparatus supported in a horizontal state by the keyboard apparatus support member. And.

  According to this electronic keyboard instrument, the keyboard device is supported in a horizontal state by the keyboard device support member above the shelf plate that is disposed so as to be inclined downward toward the back side. According to such a configuration, since a space is formed between the keyboard device and the shelf board, components such as a speaker can be arranged in this space, and thus the electronic keyboard instrument can be made compact. In addition, since the shelf board is inclined, the space between the installation surface of the electronic keyboard instrument and the instrument body is as wide as the player side, so that the player's legs hit the shelf board. It is possible to perform without.

  The invention according to claim 10 of the present invention includes a shelf board that is inclined downward toward the back side, a keyboard device support member provided on the shelf board, and a plurality of keys, and is horizontal by the keyboard device support member. A keyboard device that is supported in a state, and a speaker that emits a performance sound when the key is depressed, the sound emitting surface being provided on the shelf plate along the shelf plate and facing downward. It is characterized by that.

  According to this electronic keyboard instrument, the keyboard device is supported in a horizontal state by the keyboard device support member above the shelf plate that is disposed so as to be inclined downward toward the back side. Further, the shelf board is provided with a speaker that emits a performance sound when the key is depressed, and this speaker has a sound emitting surface along the shelf board and facing downward, that is, It is arranged to face diagonally downward on the front side.

  According to such a configuration, an effect similar to that of the above-described invention according to claim 9 can be obtained. Further, since the sound emitting surface of the speaker is disposed obliquely downward on the front side, the performance sound is more likely to reach the performer or the like than in the conventional case of being disposed downward. Therefore, with this electronic keyboard instrument, it is possible to deliver a higher-quality performance sound to a performer while maintaining a compact outer shape.

  In particular, when this electronic keyboard instrument is a table-type instrument, a space opened to the player side in front is formed between the shelf board and the surface on which the electronic keyboard instrument is installed. It passes through this space and reaches the performers. Accordingly, in the case of a desktop electronic keyboard instrument having a speaker with the sound emitting surface facing vertically downward, that is, the sound emitting surface of the speaker and the surface on which the keyboard instrument is placed are in contact with each other and face each other. Compared with the case where a performer etc. can hear a clearer performance sound.

1 is a perspective view showing an electronic piano according to a first embodiment of the present invention. It is sectional drawing in alignment with line AA of the electronic piano of FIG. It is a perspective view of the back board and keyboard cover of the electronic piano of FIG. 1, and has shown the state which both isolate | separated from each other. It is a side view which shows the state which attached the keyboard cover of the electronic piano of FIG. 1 to the back board. It is sectional drawing which shows the electronic piano by 2nd Embodiment of this invention. It is sectional drawing which shows the electronic piano by 3rd Embodiment of this invention. It is sectional drawing which shows the conventional electronic keyboard instrument which has a speaker arrange | positioned in the back of a keyboard apparatus in the state which faced the sound emission surface below. It is sectional drawing which shows the conventional electronic keyboard musical instrument which provided the speaker box below the shelf board.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 and 2 show an electronic piano 1 (electronic keyboard instrument) according to a first embodiment of the present invention. The electronic piano 1 includes a piano main body 2 (instrument main body), and stands 11 and 11 that extend downward from and support both left and right ends of the piano main body 2. The piano body 2 as a whole extends in the left-right direction (the depth direction in FIG. 2), the side plates 3, 3 at the left and right ends, the shelf plate 4 provided between the side plates 3, 3, and the shelf plate 4. For example, two speakers 5 and 5 (only one is shown in FIG. 2), the keyboard device 10, and a keyboard lid 50 for opening and closing the key 13 of the keyboard device 10.

  The shelf plate 4 is a flat plate that is long in the left-right direction, and extends horizontally between the left and right side plates 3, 3. A plurality of long screws 7 (only one each shown in the front and back) are provided at the front end portion and the rear end portion (left end portion and right end portion in FIG. 2) of the shelf board 4 so as to be arranged in the left-right direction, Each long screw 7 is passed through the shelf plate 4 and the spacer 6 from below, and is screwed into the lower end of one of the front and rear connecting bars 16a and 16d. The keyboard device 10 is supported above the shelf board 4 via a plurality of long screws 7 and connecting bars 16a and 16d.

  The keyboard device 10 is for 88 keys. As shown in FIG. 2, the keyboard device 10 comprises 88 pieces of a chassis 12 and white keys 13a and black keys 13b rotatably attached to the rear end portion of the chassis 12. A key 13 (only one of the white key 13a and the black key 13b is shown in FIG. 2), a key switch 30 for detecting key pressing information of the key 13, and the like are provided. Further, a hammer 14 (only one is shown) is rotatably provided for each key 13 in the chassis 12 of the keyboard device 10.

  The chassis 12 is composed of a plurality of chassis 12 (only one is shown) divided into octaves, and fixed to the four connecting bars 16a to 16d with screws 19 in a state of being arranged in the left-right direction. These connection bars 16a to 16d extend in the left-right direction and are arranged in the front-rear direction. Each of these is a single long and narrow angled shape extending over the entire horizontal direction of the chassis 12, and is formed by bending a steel plate, for example. In addition, reinforcing ribs 18 extending in the front-rear direction are arranged for each octave (only one is shown), and the ribs 18 are formed, for example, by bending and pressing one steel plate using a mold. ing. As described above, the chassis 12 integrally connected by the connection bars 16a to 16d and reinforced by the ribs 18 is connected to the shelf plate 4 by the plurality of long screws 7 via the front and rear connection bars 16a and 16d. Is supported with a predetermined gap between

  A key shaft hole 21 that supports the key 13 is provided at the rear end of the chassis 12, a hammer recess 22 that supports the hammer 14 is provided at the center, and the hammer 14 passes through the front and center. The first and second hammer passage holes 23a and 23b are formed on the rear side of the first hammer passage hole 23a, and key passage holes 25 through which the stopper portions 24 of the keys 13 pass are formed for the respective keys 13. Further, the chassis 12 has white key guides 26a at positions corresponding to the white keys 13a on the front side of the first hammer passage hole 23a, and black positions at positions corresponding to the black keys 13b on the rear side of the key passage holes 25. Each of the key guides 26b is erected.

  Further, the chassis 12 has key lower limit stoppers 27a and 27b for black keys and white keys, a key upper limit stopper 28, a hammer lower limit stopper 29, and a hammer upper limit stopper for restricting the rotation of the key 13 and the hammer 14. 34 is provided. The black key lower limit stopper 27a and the key upper limit stopper 28 are respectively attached to the upper surface and the lower surface of the chassis 12 at the same position between the key passage hole 25 and the black key guide 26b so as to sandwich the chassis 12. The hammer lower limit stopper 29 is attached to the lower end of the front connection bar 16a, and the hammer upper limit stopper 34 and the white key key lower limit stopper 27b are located behind the white key guide 26a, and are located on the chassis. 12 are respectively attached to the upper surface and the lower surface of the chassis 12 with the 12 interposed therebetween. Each of the stoppers 27a, 27b, 28, 29, and 34 is formed of a single band-shaped cushioning material that extends over the entire left and right direction of the chassis 12, for example, urethane foam with felt attached to the surface.

  Further, the key switch 30 is provided behind the hammer recess 22 of the chassis 12. The key switch 30 includes a printed circuit board 31 screwed to the chassis 12 and a switch body 32 provided on the upper surface thereof. The switch body 32 faces the second hammer passage hole 23b of the chassis 2 from below, and is connected via the printed circuit board 31 to a sound generation control device 41 for controlling sound generation of a performance sound to be described later.

  The key 13 (white key 13a and black key 13b) is made of, for example, an AS resin injection-molded product, and has both side walls 13c (only one shown in FIG. 2), the top wall 13d, etc., and the bottom surface is open. It has an inverted U-shaped cross section. These keys 13 are arranged in the left-right direction with a slight gap between them. Left and right pins 33 and 33 (only one is shown) projecting inwardly are formed at the rear ends of the side walls 13c of each key 13, and this pin 33 is used for the key at the rear end of the chassis 12. By engaging the shaft hole 21 from both sides, the key 13 is rotatably supported by the chassis 12. Further, the key 13 is formed with hook-shaped stopper portions 24 extending downward from the front portion on both side walls 13c.

  On the other hand, the hammer 14 includes a hammer body 35 extending in the front-rear direction below the key 13 and two mass plates 36 and 36 attached to the left and right sides of the front end portion of the hammer body 35 (only one on the side in FIG. 2). And a stopper 35a provided at the front end portion of the hammer body 35. The hammer body 35 is made of an ABS resin injection molded product or the like, and left and right pins 37 and 37 (fulcrum) (only one is shown) projecting from both sides are formed at the rear end thereof. The hammers 14 and 37 are engaged with the hammer recesses 22 and 22 (only one is shown) of the chassis 12 located on both sides thereof, so that the hammer 14 is rotatably supported by the chassis 12. The hammer body 35 is constituted by a main portion 35b extending long forward from the pin 37 and a switch pressing portion 38 on the rear side. The mass plate 36 is used to give the hammer 14 a touch weight similar to that of an acoustic piano, and is made of a steel plate having a specific gravity larger than that of the hammer body 35.

  A mouth stick 8 is provided in front of the keyboard device 10. The mouth bar 8 is made of, for example, a wood material, and extends between the left and right side plates 3 and 3, thereby covering substantially the front surface of the keyboard device 10. Further, a notch 8a extending in the left-right direction is formed in the lower half of the back surface of the mouth bar 8, and an operation panel mounting bar 40 is attached to a mounting surface 8b extending substantially vertically of the notch 8a. It has been.

  The operation panel mounting bar 40 is formed in a predetermined shape, for example, by bending a single steel plate, and has an operation panel 40a for mounting switches 43 (operation elements) described later. The operation panel mounting bar 40 extends between the left and right side plates 3 and 3, is attached to both the mouth bar 8 and the shelf board 4, and is attached to the mouth bar 8 and the shelf board 4. The notch 8a extends from the mounting surface 8a along the bottom surface of the mouth bar 8 and bends downward behind the front surface of the mouth bar 8. Thereby, the operation panel 40a extends substantially vertically downward, and further bent rearward at the lower end portion thereof, so that the operation panel mounting bar 40 extends along the lower surface of the front end portion of the shelf board 4. . The operation panel mounting bar 40 is fixed to the mouth bar 8 by screwing a plurality of screws 9 (only one is shown) from the rear into the mounting surface 8b. The long screw 7 is fixed by being screwed in a state of being sandwiched between the plurality of long screws 7 at the front end portion 4 and the shelf plate 4. A plurality of switch holes 40b for the switches 43 are formed in the operation panel 40a extending vertically of the operation panel mounting bar 40, and the entire front surface of the operation panel 40a is darker than the mouth bar 8. Painted in color.

  The sound generation control device 41 described above is provided at the left end portion of the shelf board 4. The sound generation control device 41 is composed of, for example, a microcomputer and an electronic board 42 for a sound source / amplifier for generating performance sounds, and the like, and a space between the shelf board 4 and the keyboard device 10 and the hammer 14. And is attached to the upper surface of the shelf board 4. The electronic board 42 has a switch board 42a integrally formed at the front end thereof, and the switch board 42a is disposed behind the operation panel 40a of the operation panel mounting bar 40 described above, and The circuit board 42a is provided with a plurality of switches 43 so as to protrude forward. These switches 43 are connected to the operation panel 40a through the plurality of switch holes 40b of the operation panel 40a. Also protrudes forward. Such a plurality of switches 43 are operated by the performer to switch on / off the power, set predetermined performance functions such as changing the tone, volume, rhythm, etc. of the performance sound. Is to do.

  Two speakers 5 and 5 are also provided in a space between the shelf board 4 and the keyboard device 10. Two sound emitting holes 4a and 4a (only one is shown) are formed at the rear end portion of the shelf board 4 so as to be arranged at a predetermined interval in the left-right direction and to penetrate in the up-down direction, The two speakers 5, 5 are arranged so as to cover the sound emitting holes 4 a, 4 a from above, and are fixed to the shelf board 4 by a plurality of screws 44. Thereby, the sound emitting surface 5a of each speaker 5 is directed downward. The speaker 5 is connected to the sound generation control device 41 described above, and emits a performance sound generated by the sound generation control device 41 from the sound emission surface 5a when the key 13 is pressed.

  A back wall 45, a roof plate 46 and a front plate 47 are provided at the rear end of the piano body 2. These three persons 45 to 47 extend between the left and right side plates 3 and 3, and the back wall 45 is arranged behind the shelf board 4 and the keyboard device 10, and covers both 4 and 10 from the rear. Further, the roof plate 46 extends forward from the upper end portion of the back wall 45 and covers the rear end portion of the key 13 from above. The front plate 47 extends downward from the front end portion of the roof plate 46 to slightly above the key 13, and a predetermined gap is provided between the front plate 47 and the black key 13 b.

  The keyboard lid 50 is placed on the mouth bar 8 and the keyboard device 10 when the keyboard device 10 is closed. The keyboard lid 50 has a front end 51 at the front end, a mounting bar 52 at the rear end, a keyboard lid main body 53 between the two 51, 52, and the like. It extends over 88 keys 13. The keyboard lid body 53 is a flat plate that is long in the left-right direction, extends in the front-rear direction from above the mouth bar 8 to the front of the front plate 51, and a convex portion 53a that extends in the left-right direction protrudes forward. Further, a groove 51a extending in the left-right direction is formed at the rear part of the upper end portion of the front piece 51, and the convex portion 53a of the keyboard lid body 53 is fitted into the groove 51a through, for example, an adhesive. Both 51 and 53 are joined so as to be substantially perpendicular to each other.

  The mounting bar 52 at the rear end is formed into an L-shaped cross section by bending a single steel plate, for example, and is bent at an angle slightly smaller than a right angle. The mounting bar 52 includes a fixing portion 52a and an engaging portion 52b, and a plurality of screws 54 (1) screwed into the back surface of the keyboard lid body 53 through holes (not shown) of the fixing portion 52a. Only one is shown) and is fixed to the keyboard lid body 53. In this state, the fixing portion 52a extends along the back surface of the keyboard lid body 53, and the engaging portion 52b extends substantially vertically downward with the back surface of the keyboard lid body 53 substantially flush.

  The engaging portion 52b is provided with a felt 55 so as to cover it. The felt 55 extends in the left-right direction of the engaging portion 52b, is folded at the lower end of the engaging portion 53b, and is attached to the front surface and the rear surface of the engaging portion 52b by, for example, a double-sided tape. Covering over. In addition, attachment holes 52c are formed in the left and right ends of the engagement portion 52c at predetermined intervals so as to penetrate the engagement portion 52c in the front-rear direction (see FIG. 3).

  On the upper surface of the keyboard lid body 53, two left and right handles 56, 56 for attaching and detaching the keyboard lid 50 to and from the piano body 2 are provided. The two handles 56, 56 are located at a predetermined distance from each other and are arranged at the center of gravity position in the front-rear direction of the keyboard lid 50, and the keyboard lid is screwed by screws 57 that penetrate the keyboard lid body 53 from the back side. Each is fixed to the keyboard lid body 53 with the body 53 sandwiched therebetween. In the keyboard lid 50 as described above, the lower end of the front 51 is placed on the upper end of the mouth bar 8, and the engaging portion 52 b of the mounting bar 52 is placed on the key 13 from above via the felt 55. In this state, all the keys 13 are covered from above and closed.

  A back plate 60 is provided between the left and right stands 11, 11 below the shelf plate 4. The back plate 60 is disposed at a predetermined height position on the rear ends of the stands 11 and 11, and extends in the left-right direction and substantially vertically. As shown in FIG. 3, two hook members 61 and 61 (keyboard lid mounting portions) are provided at a predetermined interval at the upper end portion of the front surface of the back plate 60. Each hook member 61 has a block-like base portion 61a and a pin 61b protruding upward from the base portion 61a. When four screws 62 arranged in a square shape are screwed in from the front, the base portion 61a is The plate 60 is fixed to the back plate 60 so as to be flush with the upper surface. The distance between the pins 61b and 61b of the hook members 61 and 61 is set equal to the distance between the two mounting holes 52c and 52c of the mounting bar 52 of the keyboard cover 50 described above.

  When playing the electronic piano 1 having the above configuration, the performer first removes the keyboard cover 50 from the piano body 2. At that time, the performer holds the left and right handles 56, 56 of the keyboard lid 50, and lifts the keyboard lid 50 upward. As described above, the handle 56 is disposed at the center of gravity of the keyboard cover 50 in the front-rear direction, so that the player can easily lift the keyboard cover 50 in a stable state. By removing the keyboard cover 50 in this way, the key 13 is exposed and the player can perform.

  Next, the removed keyboard lid 50 is attached to the back plate 60 below the piano body 2. Specifically, as shown in FIG. 3, the keyboard cover 50 is attached with the mounting bar 52 on the upper side and the front 51 on the lower side. At that time, as shown in FIG. 4, by engaging the mounting hole 52 c of the mounting bar 52 with the pin 61 b of the hook member 61, the engaging portion 52 b is mounted on the upper surfaces of the hook member 61 and the back plate 60. Let me put it. In this state, the felt 55 attached to the engaging portion 52b is sandwiched between the engaging portion 52b, the hook member 61, and the back plate 60. Thus, the keyboard cover 50 is attached to the back plate 60 in a state where the engaging portion 52 b is hooked on the hook member 61.

  When the performer depresses the key 13, the key 13 and the hammer 14 rotate in predetermined directions. Specifically, the key 13 rotates downward (counterclockwise in FIG. 2) about the pin 33 while the stopper portion 24 passes through the key passage hole 25 of the chassis 12, and the white key guide. The guide 26b or the black key guide 26b is guided so as not to move left and right. Further, the downward rotation of the key 13 at this time is restricted by the lower surface of the key 13 coming into contact with the key lower limit stopper 27a or 27b.

  As the key 13 is depressed, the hammer 14 rotates upward (clockwise in FIG. 2) about the pin 37 when the switch pressing portion 38 is pressed by the actuator portion 39 of the key 13. Then, when the stopper 35a of the hammer 14 comes into contact with the hammer upper limit stopper 34, the rotation of the hammer 14 at the time of key depression is completed. The rotation of the key 13 also ends almost simultaneously, and the rotation is prevented by the key lower limit stopper 27a or 27b. Further, the upward rotation of the hammer 14 is regulated by the hammer upper limit stopper 34.

  When the hammer 14 is rotated to a predetermined angle, the switch pressing portion 38 presses the switch main body 32 of the key switch 30 to turn it on. Thereby, key depression information of the key 3 is detected, and the sound generation control device 41 causes the speaker 5 to emit sound according to the detection result and the performance function set by the plurality of switches 43 of the operation panel 40. A sound generation signal indicating the performance sound is generated. Then, when the generated sound generation signal is input to the speaker 5, the performance sound is emitted from the sound emitting surface 5a.

  After the end of the performance, the performer removes the keyboard cover 50 from the hook member 61 and places it on the mouth stick 8 and the key 13 by the operation completely opposite to that before the performance, thereby closing the key 13. . At that time, the keyboard lid 50 is placed without damaging the key 13 by the felt 55 attached to the engaging portion 53 b of the mounting bar 53.

  According to the electronic piano 1 having the above configuration, the speaker 5 is disposed in the space between the shelf board 4 and the keyboard device 10, so that the speaker is provided below the shelf board 4 and behind the keyboard device 10. Therefore, the manufacturing cost can be reduced and the piano body 2 can be made compact.

  Further, the hammer 14 provided between the keyboard device 10 and the shelf board 4 is rotatably supported by a pin 37 at the rear end portion, and a main portion 35b extends forward from the pin 37, and the speaker 5 is The pin 37 is interposed between the main portion 35b of the hammer 14 and the opposite side thereof. As a result, the speaker 5 is disposed at a position avoiding the space where the main portion 35b between the shelf board 4 and the keyboard device 10 rotates, so that the rotation of the hammer 14 is not obstructed and the electronic piano 1 The piano body 2 can be made more compact as a whole.

  Further, when the keyboard cover 50 is removed from the piano body 2 during performance, the removed keyboard cover 50 can be attached to the hook members 61 and 61 of the back plate 60 and stored. Thus, it is not necessary to store the keyboard cover 50 removed from the piano body 2 in another place during performance or to lean against the piano body 2 or a wall. Therefore, it is possible to prevent the keyboard cover 50 from being lost or damaged and the keyboard body 2 or the stand 11 from being damaged by the keyboard cover 50.

  When the keyboard lid 50 is attached to the back plate 60, the felt 55 is interposed between the engaging portion 52b of the keyboard lid 50 and the back plate 60 and the hook member 61 during performance. Since it is possible to prevent the keyboard cover 50 from resonating due to the performance sound and the vibration of the keyboard cover 50 due to an impact when the key is strongly pressed, etc., it is possible to prevent the occurrence of noise due to the resonance and vibration during the performance. can do. Further, in a state where the keyboard cover 50 is attached to the back plate 60, the keyboard cover 50 is disposed below the rear end portion of the piano body 2, so that the space between the installation surface of the electronic piano 1 and the piano body 2 is set. Since the space is secured, the performer can perform in a normal posture without the keyboard cover 50 getting in the way.

  Further, since the operation panel 40a is hidden by the mouth stick 8, the operation panel 40a and the switches 43 are less visible to the player than the panel surface and switches of the conventional electronic keyboard instrument. Accordingly, the player and the like feel uncomfortable without omitting the operation panel 40a and the switches 43 for setting the performance function peculiar to the electronic piano, that is, without impairing the performance function and operability as the electronic piano. You can give the impression of a keyboard instrument.

  In addition, the electronic board 42 and the speaker 5 are both provided on the shelf board 4 and arranged at positions close to each other. The electronic board 42 has a board 42a for switches 43 for setting performance functions, Connected to the speaker 5. Therefore, it is not necessary to provide the substrates 43 and 5 at positions far from each other, and the wiring for connecting the substrates can be made unnecessary. Therefore, the manufacturing cost can be reduced correspondingly, and the wiring can be reduced. It is possible to suppress the generation of electromagnetic waves due to the generation of current.

  Further, since the operation panel 40a has a darker color than the mouth stick 8, the operation panel 40a can be made inconspicuous in combination with being arranged below and behind the mouth stick 8. Accordingly, since the operation panel 40a and the switches 43 provided on the operation panel 40a are not conspicuous, an appearance closer to that of an acoustic keyboard instrument can be obtained.

  FIG. 5 shows an electronic piano 70 (electronic keyboard instrument) according to the second embodiment of the present invention. Since the electronic piano 70 has basically the same configuration as that of the electronic piano 1 of the first embodiment described above, the same reference numerals are used for the components common to each other, and the electronic piano is used. The difference from 1 will be mainly described.

  The keyboard device 10 of the electronic piano 1 is supported by the shelf plate 4 via a plurality of long screws 7, whereas the keyboard device 10 of the present embodiment has two support bars, front and rear, instead of the long screws 7. It is supported by the shelf board 4 via 71a, 71b (keyboard device support member). These support bars 71a and 71b extend in the left-right direction of the keyboard device 10, and are formed into a U-shaped cross section by bending a single steel plate, for example, and include a plurality of screws 72 (one for each front and rear). Are fixed to the shelf plate 4 by a plurality of screws 73 (only one is shown in the front and rear), respectively, and fixed to the connecting bars 16a and 16d.

  The heights of the support bars 71a and 71b are set according to the height of the speaker 5. Thereby, in this electronic piano 70, the keyboard device 10 and the speaker 5 are arranged very close to each other in the vertical direction, and the gap between the two 10 and 5 is very narrow. Further, the sound emission holes 4a of the speakers 5 and the shelf board 4 are arranged at positions shifted in the left-right direction with respect to the ribs 18 in order to avoid interference between the speakers 5 and the ribs 18 provided for each octave. ing. Thereby, the height of the whole piano main body 2 is lower than the piano main body 2 of 1st Embodiment.

  Further, the shelf plate 4 is joined at the front end portion and the rear end portion thereof to the lower end portion of the mouth bar 8 and the back wall 45, for example, by bonding, for example, and the switch board 42a of the sound generation control device 41 in the first embodiment. The switches 43 and the like disposed below the mouth bar 8 are provided at positions different from the first embodiment, for example, the side plate 3 and the roof plate 46 (not shown). Other configurations are the same as those of the electronic piano 1 of the first embodiment.

  According to the electronic piano 70 having the above configuration, the keyboard device 10 is supported by the support bars 71a and 71b with a space corresponding to the height of the speaker 5 between the shelf plate 4 and thereby. The shelf board 4, the speaker 5 and the keyboard device 10 are arranged in the vertical direction with almost no gap therebetween. Therefore, the piano main body 2 of the electronic piano 70 can be configured more compactly by minimizing its height.

  Further, since the speaker 5 and the keyboard device 10 are arranged with almost no gap therebetween, the performance sound emitted from the speaker 5 passes through the gaps between the plurality of keys 13 arranged in the left-right direction, and the player To reach directly. Since the gap between the keys 13 is very narrow, high-frequency sounds with short wavelengths tend to pass through this gap. Therefore, the sound quality in the high sound range can be improved as compared with the prior art, particularly when the performance sound in the high sound range reaches the performer or the like directly from the speaker 5. Furthermore, the improvement in the sound quality in the high sound range eliminates the need for a high-frequency tweeter that has been conventionally used, thereby reducing the manufacturing cost.

  FIG. 6 shows an electronic piano 80 (electronic keyboard instrument) according to the third embodiment of the present invention. Since this electronic piano 80 also basically has the same configuration as that of the electronic piano 1 of the first embodiment described above, hereinafter, the same reference numerals are used for the components common to each other, and the electronic piano is used. The difference from 1 will be mainly described.

  This electronic piano 80 is of a table type, and the stands 11 and 11 of the electronic piano 1 are omitted. In this electronic piano 80, two pedestals 81 and 81 are attached to the lower surface of each side plate 3, and the electronic piano 80 is placed on, for example, a table T via these pedestals 81. Moreover, in the electronic piano 1, the shelf board 4 is provided substantially horizontally, whereas the shelf board 4 of the present embodiment is provided in a state inclined downward at a predetermined angle toward the rear. The front end portion and the rear end portion of the shelf board 4 are joined to the lower end portions of the mouth bar 8 and the back wall 45 by, for example, adhesion.

  As a result, a space is formed between the shelf plate 4 and the table T so as to open to the player side in front, and the shelf plate 4 is inclined, so that the speaker 5 has a sound emitting surface 5a. It is arranged on the front side obliquely downward, that is, toward the space described above. Further, the switch substrate 42a of the sound generation control device 41 in the first embodiment and the switches 43 arranged below the mouth bar 8 are located at positions different from the first embodiment, such as the side plate 3 and the roof plate 46. Provided (not shown).

  In the electronic piano 1, the keyboard device 10 is supported by a plurality of long screws 7, whereas the keyboard device 10 of the present embodiment is provided by two front and rear support bars 82 a and 82 b (keyboard device support members). It is supported. These extend in the left-right direction of the keyboard device 10 and are each formed into a predetermined shape, for example, by bending a single steel plate. The front support bar 82a is bent at a predetermined angle in accordance with the inclination angle of the shelf board 4, and the rear support bar 82b is provided on the shelf board 4 in order to support the keyboard device 10 in a horizontal state. It has a greater height depending on the inclination angle. Such support bars 82a and 82b are fixed to the shelf board 4 by a plurality of screws 83 (only one each shown in the front and back) and fixed to the connecting bars 16a and 16d by a plurality of screws 84 (only one each shown in the front and rear). ing. Other configurations are the same as those of the electronic piano 1 of the first embodiment.

  According to the electronic piano 80 having the above configuration, since a space is formed between the keyboard device 10 and the shelf board 4, components such as the speaker 5 and the sound generation control device 41 can be arranged in this space. Thus, the piano body 2 of the electronic piano 80 can be made compact. Further, a space opened to the front player side is formed between the shelf board 4 and the table T on which the electronic piano 80 is placed, and the sound emitting surface 5a of the speaker 5 is obliquely downward on the front side. By being arranged toward the space, that is, toward the space, the emitted performance sound reaches the performer and the like while being reflected by the table T and the shelf board 4. Therefore, the performance sound is easier to reach the performer or the like than when the sound emitting surface of the conventional speaker is arranged vertically downward. As a result, the electronic piano 80 can deliver performance sound with higher sound quality to the performer and the like while maintaining a compact outer shape.

  In addition, this invention can be implemented in a various aspect, without being limited to each embodiment mentioned above. For example, the first and second embodiments are examples in which the main portion 35b of the hammer 14 is disposed on the front side and the speaker 5 is disposed on the rear side, but the main portion 35b of the hammer 14 extends rearward from the pin 37. In addition to the configuration, the speaker 5 may be disposed forward with the pin 37 therebetween.

  The electronic piano 80 according to the third embodiment described above is an example in which the present invention is applied to a desktop electronic piano. However, the present invention is not limited to this, and the piano main body 2 may be supported by a stand or the like. Good. Thereby, since the shelf 4 is inclined and arranged, the space between the installation surface of the electronic piano 80 and the piano body 2 is secured wider toward the player side. It is possible to perform without hitting 4. Each embodiment is an example in which the present invention is applied to an electronic piano, but it is needless to say that the present invention may be applied to other types of electronic keyboard instruments. In addition, it is possible to appropriately change the detailed configuration within the scope of the gist of the present invention.

Explanation of symbols

1 Electronic piano (electronic keyboard instrument)
2 Piano body (musical instrument body)
4 shelf board 5 speaker 8 mouth stick 10 keyboard device 11 stand 13 key 14 hammer 35b main part 37 pin (fulcrum)
40a Operation panel 42 Electronic board 43 Switches (operators)
50 Keyboard lid 52b Engaging portion 55 Felt 60 Back plate 61 Hook member (Keyboard lid mounting portion)
70 Electronic piano (electronic keyboard instrument)
71a Support bar (keyboard device support member)
71b Support bar (keyboard device support member)
80 Electronic piano (electronic keyboard instrument)
82a Support bar (keyboard device support member)
82b Support bar (keyboard device support member)

Claims (10)

Shelves,
A keyboard device having a plurality of keys arranged above the shelf board, supported by the shelf board, extending in the front-rear direction and arranged in the left-right direction;
A speaker that is disposed between the shelf board and the keyboard device and emits a performance sound when the key is depressed;
An electronic keyboard instrument characterized by comprising:   A keyboard device support member provided on the shelf plate and further supporting the keyboard device with a predetermined gap corresponding to the height of the speaker between the shelf device and the shelf plate. The electronic keyboard instrument according to claim 1. Provided between the shelf plate and the plurality of keys, respectively, rotatably supported by a fulcrum at one end in the front-rear direction, and having a main portion extending in the front-rear direction from the fulcrum to the other end, It further comprises a plurality of hammers that rotate as the key is depressed,
The electronic keyboard instrument according to claim 1, wherein the speaker is disposed on the opposite side of the main portion of the hammer with the fulcrum in between. An instrument body having a plurality of keys;
A keyboard lid provided detachably on the instrument body, for opening and closing the plurality of keys;
A stand that supports the instrument body and has a keyboard lid attachment part for detachably attaching the keyboard lid;
An electronic keyboard instrument characterized by comprising: The stand has a back plate that extends in the left-right direction below the rear portion of the instrument body and has the keyboard lid mounting portion.
The keyboard lid has an engaging portion to which a felt is attached, and the engaging portion is attached to the back plate in a state of being engaged with the keyboard lid attaching portion via the felt. The electronic keyboard instrument according to claim 4. Shelves,
A keyboard device having a plurality of keys and supported by the shelf board;
A mouth stick extending in the left-right direction so as to cover the front surface of the keyboard device;
An operation panel provided below the mouth bar, and disposed on the back side of the front end of the mouth bar,
An operator provided on the operation panel and operated to set a predetermined performance function for controlling performance;
An electronic keyboard instrument characterized by comprising: A speaker provided on the shelf board;
Provided on the shelf and connected to the operation element and the speaker, and when the key is pressed, a performance sound corresponding to the predetermined performance function set by the operation element is generated and released from the speaker. An electronic board for sound,
The electronic keyboard instrument according to claim 6, further comprising:   The electronic keyboard instrument according to claim 6 or 7, wherein the operation panel has a darker color than the mouth stick. A shelf board inclined downward toward the back side;
A keyboard device support member provided on the shelf board;
A keyboard device supported in a horizontal state by the keyboard device support member;
An electronic keyboard instrument characterized by comprising: A shelf board inclined downward toward the back side;
A keyboard device support member provided on the shelf board;
A keyboard device having a plurality of keys and supported in a horizontal state by the keyboard device support member;
A sound emitting surface is provided on the shelf plate along the shelf plate and facing downward, and a speaker that emits a performance sound when the key is pressed;
An electronic keyboard instrument characterized by comprising:

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