JP2002244660A - Keyboard instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a keyboard instrument which enables a player to listen to the intrinsic playing tones outputted from a speaker. SOLUTION: When a fallboard 20 is slid to the rear side in order to open the fallboard, the top end of a rear frame plate 28 of the fallboard 20 comes into contact with a stay 36 of a speaker unit 30. When the fallboard 20 is thereafter slid further to the rear side, the stay 36 is pushed to the rear side by the rear frame palate 28. As a result, the speaker unit 30 is pressed to the rear side together with the stay 36 and projects upward from a bench top 12 (first position). On the other hand, when the fallboard 20 is successively slid to the rear side in order the close the same, the stay 36 pushed thus far to the rear side by the rear frame plate 28 is moved to the front side so as to be returned to the home position by the weight of the speaker unit 30. As a result, the speaker unit 30 is housed into an electronic piano 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a keyboard instrument provided with a speaker.

[0002]

2. Description of the Related Art Heretofore, in a keyboard instrument such as an electronic piano, a speaker for outputting a performance sound has been mounted inside the keyboard instrument body so as to face downward or forward. If the keyboard instrument has a dedicated speaker for the high frequency range, the dedicated speaker for the high frequency range is attached to the inside of the keyboard instrument body, such as the front panel mounted on the front of the top panel or the rear side of the keyboard. Had been.

[0003]

In such a keyboard instrument, since a speaker is mounted inside the keyboard instrument body, high-directivity sounds having higher directivity are played more than low-range sounds having lower directivity. May be difficult to reach. In that case, there is a problem that the performance sound heard by the player is slightly different from the output performance sound.

[0004] It is an object of the present invention to provide a keyboard instrument that allows a player to hear the original performance sound output from a speaker.

[0005]

Means for Solving the Problems and Effects of the Invention In order to solve the above problems, a keyboard musical instrument according to claim 1 includes a keyboard disposed in front of a keyboard instrument main body, and a speaker for outputting a performance sound. Wherein the speaker is displaceable between a first position protruding forward from the keyboard instrument body and facing a front side, and a second position at least projecting less than the playing position. It is characterized by.

The speaker of the keyboard instrument may be attached to a top plate provided on the upper surface of the keyboard instrument, or may be attached to arms provided at both ends of the keyboard instrument. Also, the speaker need only have a smaller amount of protrusion at the second position than at the first position.
What is necessary is just to comprise so that some or all of a speaker may be accommodated inside a keyboard instrument main body. Further, the speaker may be configured so that the direction of the speaker can be changed to a direction in which the amount of protrusion is reduced.

According to the keyboard instrument configured as described above,
By displacing the position of the speaker to the first position,
The performance sound is output toward the front side. This performance sound is output to the player performing on the front side, so that the player can hear the original performance sound output from the speaker.

Further, when the speaker is set at the second position, the amount of protrusion of the speaker can be reduced as compared with the case where the speaker is set at the first position. Hateful. In particular, if the keyboard is configured such that all of the speakers are housed inside the keyboard instrument body when the keyboard instrument is in the second position, the keyboard instrument is not used because the speakers do not protrude outside the keyboard instrument body. The speaker does not get in the way at times. Also, the appearance of the keyboard instrument is not impaired by the protruding speakers.

The keyboard instrument may be configured such that the speaker faces upward at the second position. With this configuration, it is possible to output the performance sound to the outside of the keyboard instrument even in the state where the keyboard is at the second position.

[0010] The speaker may be configured not to face upward at the second position. With such a configuration, if the speaker is placed in the second position, for example, when a keyboard instrument is not used, dust and the like are less likely to accumulate in the cone of the speaker and to be dirty or deteriorate output characteristics.

[0011] The speaker may be displaceable to a third position facing the rear side in a state protruding from the keyboard instrument. With this configuration, the speaker can be connected to the third
By setting the position, sound can be output to the rear side of the keyboard instrument, so that the person behind the keyboard instrument can hear the performance sound.

A keyboard instrument according to a second aspect of the present invention includes a keyboard cover on the front side of the keyboard instrument body, and the speaker is moved from the second position to the second position in response to an operation of opening the keyboard cover. It is characterized by being displaced to one position.

In this keyboard instrument, as a specific configuration for displacing the speaker in conjunction with the operation of opening the keyboard cover, for example, a keyboard cover that moves in accordance with the opening operation can directly connect the speaker or another member. A configuration can be conceived in which the speaker is displaced to the first position by pushing through.

According to the keyboard instrument configured as described above,
By performing the operation of opening the keyboard cover when performing, for example, the speaker can be simultaneously displaced to the first position. Further, in the keyboard instrument according to the third aspect, in conjunction with an operation of closing the keyboard cover, the speaker is configured to be connected to the first speaker.
Displaced from a position to the second position.

A specific configuration for displacing the speaker in conjunction with the closing operation of the keyboard cover in this keyboard instrument is, for example, a keyboard cover when the speaker opens the keyboard cover as described in claim 2. In this case, when the keyboard is closed, the keyboard does not press the speaker when the keyboard is closed, so that the speaker can be displaced to the second position by its own weight. At this time, the speaker may be configured to be displaced to the second position by the elastic force of the elastic member. It is also possible to consider a configuration in which the loudspeaker that moves with the closing operation pushes the speaker directly or via another member, thereby displacing the speaker to the second position.

According to the keyboard instrument configured as described above,
By performing the operation of closing the keyboard cover when the performance ends, the speaker can be simultaneously displaced to the second position. A keyboard instrument according to a fourth aspect of the present invention is characterized in that the keyboard instrument includes a driving unit that transmits power to the speaker and displaces the speaker to the first position or the second position.

The driving means in this keyboard instrument includes:
For example, a motor or the like can be used. According to the keyboard instrument configured as described above, since the speaker can be displaced by the power transmitted from the driving unit,
The speaker can be moved more easily than if the speaker were manually displaced.

The driving means may be configured to operate in conjunction with the opening / closing operation of the keyboard cover, or an operation switch for operating the driving means may be provided to arbitrarily operate the driving means. May be configured so that
The drive means may be configured to operate in conjunction with the power switch of the keyboard instrument body. In this case, when the performer performs the performance, simply turning the power switch of the keyboard instrument to the ON side activates the drive means and displaces the speaker to the first position. By simply switching the switch to the off side, the driving means can be operated to displace the speaker to the second position.

The keyboard instrument according to claim 5, wherein the drive means operates in conjunction with an operation of opening the keyboard cover, wherein the first detection detects that the keyboard cover has been opened. Means for driving the speaker to the first position when the first detection means detects that the keyboard cover has been opened.

As the first detecting means in this keyboard instrument, a limit switch, an optical switch, an electromagnetic switch, or the like can be used. According to the keyboard instrument configured as described above, when the first detecting means detects that the keyboard cover has been opened, the driving means drives the speaker to the first position. Therefore, if an operation of opening the keyboard cover is performed when performing, for example, the speaker can be displaced to the first position.

The driving means may be configured to operate only for a time necessary for displacing the speaker to the first position after detecting that the keyboard cover has been opened. Alternatively, the driving unit may be stopped when the sensor detects that the speaker has been displaced to the first position.

The keyboard instrument according to claim 6, wherein the drive means operates in conjunction with the operation of closing the keyboard cover, wherein the second detection detects that the keyboard cover is closed. Means for driving the speaker to the second position when the second detection means detects that the keyboard cover is closed.

According to the keyboard instrument configured as described above,
When the second detecting means detects that the keyboard cover is closed,
Driving means drives the speaker to the second position. Therefore, if the operation of closing the keyboard cover is performed when the performance is finished, the speaker can be driven to the second position.

The driving means may be configured to operate only for a time necessary for displacing the speaker to the second position after detecting that the keyboard cover is closed. Further, when the sensor detects that the speaker has been displaced to the second position, the driving means may be stopped.

[0025]

Next, an embodiment of the present invention will be described with reference to an example. [First Embodiment] An electronic piano 1 is provided with a keyboard cover 20 on a side where a player plays (a near side in FIG. 1; hereinafter, referred to as a front side).
Is arranged on the side opposite to the side on which the player plays (FIG. 1).
The top plate 12 is disposed on the rear side in the upper part (hereinafter referred to as the rear side). This top plate 12 has two speaker units 3
0 and a music stand 14. A pair of arms 16 are attached to the electronic piano 1 so as to sandwich the keyboard cover 20 and the top plate 12 from the side.

The keyboard cover 20 is a plate-shaped member that slides in the front-rear direction. The keyboard cover 20 covers the keyboard when slid forward, and is disposed below the top plate 12 when slid rearward. It is configured. As shown in FIG. 2, the keyboard cover 20 includes a cover body 22, a front frame 24 attached to the front end of the cover body 22, a rear frame 26 and a rear frame plate 28 attached to the rear end of the cover body 22, and the like. Have. Front frame 24
Are a protection part 24a that covers the front end of the lid body 22, and a protection part 2
4a and a skirt portion 24b projecting downward. The rear frame 26 includes a protection portion 26a that covers the rear end of the lid body 22.
And holders 26b and 26c protruding rearward of the protection portion 26a and provided with through holes in the lateral direction. A support shaft 26e is passed through the holders 26b and 26c, and pinion gears 26d are attached to both ends of the support shaft 26e. The rear frame plate 28 is a plate member provided to prevent dust and the like from entering the inside of the electronic piano 1 with the keyboard cover 20 closed, and extends rearward and upward from near the rear end of the cover main body 22. It is attached to be.
As shown in FIG. 3A, the keyboard cover 20 is mounted on a rack 50 that is disposed straight in the front-rear direction on the inside of the arm 16 with the pinion gear 26d mounted thereon. This keyboard cover 20 is provided with a rack 50
Is slidable by the length in the front-rear direction.

As shown in FIGS. 1 and 3 (a), the speaker unit 30 is attached to a box 34 having a shape of a side fan and extending to the side, and facing outward from the inside of the box 34. Speaker 32. Also,
The speaker unit 30 includes a plate-like stay 36 extending downward. This speaker unit 30
In the box 34, a fan-shaped center side of the box 34 is fixed to the top plate 12 with a hinge 38 and rotates around a fixed portion by the hinge 38, and is housed inside the electronic piano 1 and the speaker 32 faces upward. The speaker 32 can be displaced between two positions and a first position where the speaker 32 projects upward from the top plate 12 and faces the front side.

In the electronic piano 1, when the keyboard cover 20 is opened, the keyboard cover 20 is slid rearward. When the keyboard cover 20 is slid rearward, the upper end of the rear frame plate 28 of the keyboard cover 20 comes into contact with the stay 36 of the speaker unit 30 as shown in FIG. Then, when the keyboard cover 20 is further slid rearward, the stay 3
6 is pushed rearward by the rear frame plate 28. As a result, the speaker unit 30 is pushed rearward together with the stay 36, and as shown in FIG. 3C, the speaker unit 30 rotates about the mounting portion of the hinge 38 and projects above the top plate 12 (first position). ).

On the other hand, when closing the keyboard cover 20, when the keyboard cover 20 is slid forward, the stay 36, which has been pushed rearward by the rear frame plate 28, is moved together with the speaker unit 30 into the speaker unit 30. Move to the front side by returning to the original position by weight. As a result, the speaker unit 30 is rotated around the mounting portion of the hinge 38 and housed inside the electronic piano 1 (second position).

According to the electronic piano 1 configured as described above, the performance sound is output toward the front side by projecting the speaker unit 30 from above the top plate 12. This performance sound is output to the player performing on the front side, so that the player can hear the original performance sound output from the speaker 32.

Further, since the speaker unit 30 can be housed inside the electronic piano 1, the speaker unit 30 does not protrude in this state, and the speaker unit 30 becomes an obstacle when the electronic piano 1 is not used. Absent. Further, the appearance of the electronic piano 1 is not impaired by the protruding speaker unit 30.

When the speaker unit 30 is housed in the electronic piano 1, the speaker 32 is configured to face upward. Therefore, when the performance sound is output without using the keyboard, such as in an automatic performance, the keyboard is used. Even when the cover 20 is closed and the speaker unit 30 is stored, the performance sound can be output to the outside of the electronic piano 1.

Further, by performing the operation of opening the keyboard cover 20 at the time of performing a performance or the like, the speaker unit 30 can be projected upward at the same time, and the operation of closing the keyboard cover 20 at the end of the performance or the like. Is performed, the speaker unit 30 can be stored at the same time.

[Second Embodiment] The electronic piano 2 is different from the electronic piano 1 of the first embodiment in the speaker unit 4
Since the operation of the speaker unit 40 differs from that of the speaker unit 40, the configuration of the speaker unit 40 will be mainly described.

As shown in FIG. 4A, the speaker unit 40 provided in the electronic piano 2 has a box 44 shaped like a side fan and extending laterally, and a box 44 extending from the inside of the box 44 to the outside. And a speaker 42 attached thereto. Further, the speaker unit 40 is provided with a rack portion 46 on the outer side along the arc portion of the fan.
In the speaker unit 40, a fan-shaped center side of the box 44 is fixed to the top plate 12 with a hinge 48, and the speaker unit 40 rotates about the fixed portion with the hinge 48, and the electronic piano 2
It is displaceable between a second position in which the speaker 42 is housed inside and faces upward, and a first position in which the speaker 42 projects above the top plate 12 and faces forward.

Also, the electronic piano 2 includes a pinion gear 54 for displacing the speaker unit 40 by engaging and rotating with the rack 46 of the speaker unit 40, and a motor 52 for rotating and driving the pinion gear 54 (the present invention). Driving means). Further, as shown in FIG.
A sequencer 60 for controlling the motor 52 in conjunction with the switching of No. 8 is incorporated. When the power switch 18 is turned on, the sequencer 60
Is rotated in the normal rotation direction, and when it is switched to the off side, it is rotated in the reverse rotation direction. In this configuration, the sequencer 60 operates the speaker unit 40 via the pinion gear 54 from the first position to the second position, or from the second position to the first position for a time (this embodiment). 10 seconds), the motor 52
Is configured to operate.

In the electronic piano 2, when the power switch 18 is turned on, the sequencer 60 operates the motor 52. At this time, the motor 52 drives the pinion gear 54 to rotate in the normal rotation direction,
As shown in FIG. 4B, the speaker unit 40 is displaced to the first position.

On the other hand, when the power switch 18 is turned off, the sequencer 60 similarly operates the motor 52. At this time, the motor 52 drives the pinion gear 54 to rotate in the reverse direction, thereby displacing the speaker unit 40 to the second position.

According to the electronic piano 2 configured as described above, since the speaker unit 40 can be displaced by the power transmitted from the motor 52, the speaker unit can be displaced manually as compared with the case where the speaker unit is displaced manually. Can be moved easily.

Further, when the player performs the performance, simply by turning the power switch 18 of the electronic piano 2 to the ON side, the motor 52 operates to displace the speaker unit 40 to the first position, and the performance ends. In doing so, the motor 52 operates and the speaker unit 40 can be housed inside the electronic piano 2 simply by switching the power switch 18 of the electronic piano 2 to the off side.

[Third Embodiment] An electronic piano 3 differs from the electronic piano 2 of the second embodiment in that the motor 52 is not linked to the power switch, and the difference in the configuration from the electronic piano 2 will be described. .

This electronic piano 3 has, as shown in FIG.
Optical sensors 70 and 72 for detecting that the keyboard cover 20 has been opened and closed, and a sequencer 62 for controlling the motor 52 based on detection signals from the optical sensors 70 and 72 are built in.

In the electronic piano 3, when the keyboard cover 20 is slid rearward and opened, the optical sensor 70 detecting that the keyboard cover 20 is opened outputs a first detection signal to the sequencer 62. Then, the sequencer 62 that has received the first detection signal operates the motor 52 for 10 seconds. At this time, the motor 52 drives the pinion gear 54 to rotate in the normal rotation direction, thereby displacing the speaker unit 40 to the first position as shown in FIG. 4B.

On the other hand, when the keyboard cover 20 is slid forward and closed, the optical sensor 72 that has detected that the keyboard cover 20 has been closed outputs a second detection signal to the sequencer 62. Then, the sequencer 62 that has received the second detection signal operates the motor 52 for 10 seconds. At this time, the motor 52 drives the pinion gear 54 to rotate in the reverse direction, thereby displacing the speaker unit 40 to the second position.

According to the electronic piano 3 configured as described above, the motor 5 can be opened simply by opening the keyboard cover 20.
2, the speaker unit 40 can be displaced to the first position. Further, only by performing the operation of closing the keyboard cover 20, the speaker unit 4 is driven by the motor 52.
0 can be stored inside the electronic piano 3.

[Modifications] Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described specific embodiments, and can be implemented in various other forms. For example, in the above embodiment, as in the electronic piano 4 shown in FIG. 7, the speaker unit 80 is attached at an angle such that it can output a performance sound toward the player in the state where the speaker unit 80 is in the first position. You may. In this case, the sound in the high-frequency range with high directivity is more likely to reach the player.

In the above-described embodiment, the speaker unit projects above the top plate 12. However, the speaker unit may be configured to project laterally from the arm 16. . In the above embodiment, the speaker unit is displaced while rotating about the mounting portion.
As in the electronic piano 5 shown in (a) and (b), the speaker unit 82 may be configured to slide straight up and down.

In the above embodiment, the speaker unit is configured to be housed inside the electronic piano 1. However, the speaker unit of the electronic piano 6 shown in FIGS. As shown, the speaker unit 84
At the second position, it is brought down on the top 12 and
It may be configured to be raised and protruded upward at the position.

Further, in the above embodiment, the speaker unit is housed inside the electronic piano, and the speaker is directed upward.
Like the electronic piano 7 shown in (a) and (b), when the speaker unit 86 is stored, the speaker 86a may be configured not to face upward. In this case, if the speaker unit 86 is housed, for example, when the electronic piano 7 is not used, dust or the like is less likely to accumulate on the cone portion of the speaker 86a, and it is unlikely that the speaker 86a becomes dirty or deteriorates output characteristics.

In the above embodiment, the speaker unit is directed to the front side at the first position. However, when the speaker unit is at the first position, the speaker can be turned to the rear side. It may be configured as follows. In this case, since the voice can be output to the rear side of the electronic piano, the person behind the electronic piano can hear the performance sound.

In the second and third embodiments, the motor 52 is operated in response to the switching of the power switch or the opening / closing of the keyboard cover 20 to displace the speaker unit 40. However, the motor 52 may be configured to be arbitrarily operated by a dedicated operation switch.

In the second and third embodiments, the sequencer 60 can displace the speaker unit 40 from the first position to the second position or from the second position to the first position. Although only the motor 52 is operated, the operation of the motor 52 may be stopped when the sensor detects that the speaker unit 40 has been displaced to the first position or the second position. In this case, since the motor 52 is stopped when the speaker unit 40 has been displaced to the first position or the second position, the speaker unit 40 can be displaced to the correct position more reliably.

Further, in the third embodiment, an example has been described in which the opening and closing of the keyboard cover 20 is detected by the optical sensors 70 and 72. Opening and closing may be detected by a limit switch, an electromagnetic sensor, or the like.

[Brief description of the drawings]

FIG. 1 is a perspective view of an electronic piano according to an embodiment.

FIG. 2 is a perspective view of a keyboard cover constituting the electronic piano.

FIG. 3 is an exemplary sectional view showing the operation of the keyboard cover and the speaker unit in the electronic piano according to the first embodiment;

FIG. 4 is a sectional view showing an operation of the speaker unit in the electronic piano of the second and third embodiments.

FIG. 5 is a block diagram showing a main part configuration of the electronic piano of the second embodiment.

FIG. 6 is a block diagram showing a main part configuration of an electronic piano according to a third embodiment.

FIG. 7 is a top view of an electronic piano according to another embodiment.

FIG. 8 is a perspective view showing the operation of a speaker unit in the electronic piano of another embodiment.

FIG. 9 is an exemplary perspective view showing the operation of the speaker unit in the electronic piano of another embodiment.

FIG. 10 is an exemplary perspective view showing the operation of the speaker unit in the electronic piano of another embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Electronic piano, 2 ... Electronic piano, 3 ... Electronic piano, 12 ... Top plate, 14 ... Music stand, 16
..Arms, 20 ... key cover, 22 ... lid body, 24
... front frame, 24a ... protection part, 24b ... skirt part, 26 ... rear frame, 26a ... protection part, 26b
..Holder, 26c: Holder, 26d: Pinion gear, 26e: Support shaft, 28: Rear frame plate, 3
0 ... speaker unit, 32 ... speaker,
34 ... box, 36 ... stay, 38 ... hinge, 4
0 ... speaker unit, 42 ... speaker,
44 ... box, 46 ... rack part, 48 ... hinge,
Reference numeral 50: rack, 52: motor, 54: pinion gear, 60: sequencer, 62: sequencer, 70: optical sensor, 72: optical sensor.

Claims (6)

[Claims] A keyboard arranged in front of a keyboard instrument body;
A keyboard musical instrument provided with a speaker for outputting a performance sound, wherein the speaker protrudes from the keyboard instrument body and faces a front side in a first position, and at least a second projecting amount smaller than the playing position. A keyboard musical instrument characterized by being displaceable to and from a position. 2. A keyboard cover is provided on the front side of the keyboard instrument main body, and the speaker is displaced from the second position to the first position in conjunction with an operation of opening the keyboard cover. A keyboard instrument according to claim 1. 3. The keyboard musical instrument according to claim 1, wherein the speaker is displaced from the first position to the second position in conjunction with an operation of closing the keyboard cover. 4. A power transmission to the speaker to produce the first
The keyboard musical instrument according to any one of claims 1 to 3, further comprising a driving unit for displacing the position to the position or the second position. 5. The apparatus according to claim 1, further comprising: first detecting means for detecting that the keyboard cover has been opened, wherein the driving means includes a first detecting means for detecting that the keyboard cover has been opened by the first detecting means. The keyboard instrument according to claim 4, wherein a speaker is driven to the first position. 6. A second detecting means for detecting that the keyboard cover is closed, and when the second detecting means detects that the keyboard cover is closed, the driving means sets the driving means to The keyboard instrument according to claim 4 or 5, wherein a speaker is driven to the second position.