JP2000293175A - Keyboard instrument and silencer for keyboard instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a silencer for keyboard instruments which makes it possible to maintain the touch feel of a keyboard at the time of ordinary playing without degrading the repeated touchability of a keyboard at the time of silenced playing and facilitate the reduction in the size of a flat installation space and the keyboard instrument including this silencer. SOLUTION: This silencer has a spacer 35 which is freely advanceably and retreatably disposed along the slope of a regulating button 23 between a jack 12 and the regulating button 23 and changes the moving direction of the jack 12 in place of the regulating button 23 when intruding between the jack 12 and the regulating button 23 and drive mechanisms (40 and 41) for moving the spacer 35 between the position between the jack 12 and the regulating button 23 and the position retreating from this position. The drive mechanisms (40 and 41) are arranged in the positions different form the movable direction plane of the spacer 35.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a keyboard instrument and a silencer for a keyboard instrument.

[0002]

2. Description of the Related Art Some keyboard musical instruments such as a piano are capable of switching between a normal performance and a silence performance in which a string is not struck even when a key is pressed. At the time of such a silence performance of a keyboard instrument, the hammer shank abuts against a stopper immediately before the hammer rotated in response to a key depression hits a string, thereby suppressing the occurrence of a stringing sound and the operation of a key or the like. The tone is detected by a sensor, and a tone corresponding to the key depression and having a high pitch and a low pitch is generated electronically.

[0003] In the above-mentioned keyboard musical instrument capable of silence performance, simply arranging the stopper may cause deterioration of the continuous tapping performance of the keyboard. This is because in a normal piano, the approach (minimum distance between the hammer and the string when the key is pushed up at a very low speed) is about 2 mm. This is because the strings are stopped before the escape from the shank, and the hammer shank may be pinched between the jack and the stopper. In order to prevent this, it is necessary to make the timing at which the jack escapes from the hammer shank earlier to increase the approach. As described above, if the timing at which the jack escapes from the hammer shank is advanced in order to prevent deterioration of the continuous tapping performance of the keyboard, the touch feeling of the keyboard during normal performance changes.

Japanese Patent Laid-Open Publication No. Hei 6-35445 discloses an apparatus for changing the timing at which a jack escapes from a hammer shank between a normal performance and a silence performance. In the keyboard instrument described in this publication, as shown in FIG.
A movable spacer 3 is provided between the jack 1 and the regulating button 2, and the spacer 3 is driven by an electromagnetic actuator 4 to change the movement direction of the jack 1, that is, the jack 1 is disengaged from the hammer shank 5. It is possible to change the timing of proceeding.

[0005]

However, in the device described in the above publication, the electromagnetic actuator and the spacer are arranged in a plane, so that the installation space for the device becomes large.
For this reason, it may not be applicable to a keyboard instrument having a small planar space between the keyboard cover and the action mechanism.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and can maintain a touch feeling of a keyboard during a normal performance without deteriorating the continuous tapping performance of the keyboard during a silence performance, and can provide a flat surface. An object of the present invention is to provide a silencer for a keyboard instrument in which the installation space can be easily reduced in size, and a keyboard instrument provided with the silencer.

[0007]

According to a first aspect of the present invention, there is provided a keyboard instrument comprising: a string; a striking member for striking the string; a key; A jack that pushes up the stringing member, a regulating button that abuts a part of the jack to change the direction of movement of the jack, and a movement button that is provided to be able to advance and retreat in the movement range of the stringing member, A keyboard instrument comprising a stopper mechanism for preventing striking of the stringing member when the stringing member is penetrated into a range, wherein the keyboard instrument is provided between the jack and the regulating button so as to be able to advance and retreat along the inclined surface of the regulating button. A space that changes the direction of movement of the jack instead of the regulating button when the jack enters the space between the jack and the regulating button. And a drive mechanism for moving the spacer between a position between the jack and the regulating button, and a position retracted from the position, wherein the drive mechanism includes a plane in which the spacer is movable. It is characterized by being arranged at different positions.

A keyboard instrument according to claim 2, wherein the string, a striking member for striking the string, a key, a jack for pushing up the striking member in response to the movement of the key, and a part of the jack And a regulating button for changing the direction of movement of the jack, and a reversing button provided in the movement range of the stringing member so that the stringing member can be struck when the stringing member is moved into the movement range. A keyboard instrument provided with a stopper mechanism for preventing movement of the regulating button when the jack enters between the jack and the regulating button. A spacer for changing the direction of movement of the jack, a position between the jack and the regulating button, and a position retracted from the position. Wherein a drive mechanism for moving the spacer, the drive mechanism with the is characterized in that it is disposed above the spacer.

According to a third aspect of the present invention, there is provided the keyboard instrument according to the first or second aspect, wherein the shank rail for supporting the string striking member is fixed to the shank rail, and the driving mechanism is supported. And a fixing member.

According to a fourth aspect of the present invention, in the keyboard musical instrument according to any one of the first to third aspects, the driving mechanism is fixed to a rotatably provided shaft and the shaft. A rotating member that is rotated in accordance with the rotation of the shaft, wherein the spacer is moved in accordance with the displacement of the rotating member that is rotated.

According to a fifth aspect of the present invention, in the keyboard instrument according to the fourth aspect, when the rotating member is rotated, the rotating member comes into contact with the spacer. It is characterized in that the spacer moves.

According to a sixth aspect of the present invention, in the keyboard musical instrument of the fourth or fifth aspect, the position of the axis can be adjusted in a vertical direction and / or a longitudinal direction of the key. It is characterized by further comprising means.

According to a seventh aspect of the present invention, in the keyboard instrument according to any one of the first to third aspects, the driving mechanism includes a support portion rotatably supported at a fixed position, and the spacer. And a connecting member having a connecting portion rotatably connected to the supporting member, wherein the spacer is moved in accordance with the displacement of the connecting member rotated about the support portion.

[0014] A silencing device for a keyboard instrument according to claim 8 is
A key, a striking member that strikes a string, a shank rail that supports the striking member, a jack that pushes up the striking member in accordance with the movement of the key, and a part of the jack, A silencing device for a keyboard musical instrument, comprising: a regulating button for changing a movement direction of a jack, wherein the string striking member is provided so as to be able to advance and retreat in a moving range of the string striking member, and the string striking device is moved into the moving range of the string striking member. A stopper mechanism for preventing striking of a member, and a stopper mechanism provided between the jack and the regulating button so as to be able to advance and retreat along the inclined surface of the regulating button, and enter between the jack and the regulating button. A spacer for changing the direction of movement of the jack in place of the regulating button, A driving mechanism for moving the spacer between a position between the button and a position retracted from the position, wherein the driving mechanism is disposed at a position different from a plane in which the spacer can move. It is characterized by.

According to a ninth aspect of the present invention, there is provided a silencer for a keyboard instrument.
A key, a striking member that strikes a string, a shank rail that supports the striking member, a jack that pushes up the striking member in accordance with the movement of the key, and a part of the jack, A silencing device for a keyboard musical instrument, comprising: a regulating button for changing a movement direction of a jack, wherein the string striking member is provided so as to be able to advance and retreat in a moving range of the string striking member, and the string striking device is moved into the moving range of the string striking member. A stopper mechanism for preventing striking of a member is provided between the jack and the regulating button so as to be able to advance and retreat, and when entering between the jack and the regulating button, instead of the regulating button. A spacer for changing the movement direction of the jack, a position between the jack and the regulating button, and a position retracted from the position. Wherein a drive mechanism for moving the spacer, the drive mechanism with the is characterized in that it is disposed above the spacer.

According to a tenth aspect of the present invention, in the silencer for a keyboard instrument according to the eighth or ninth aspect, the shank rail supporting the regulating button and the shank rail are fixed to the shank rail. , And a fixing member for supporting the driving mechanism.

According to an eleventh aspect of the present invention, in the muffler for a keyboard musical instrument according to any one of the eighth to tenth aspects, the driving mechanism comprises: a shaft rotatably provided; A rotating member fixed to a shaft and rotated with the rotation of the shaft, wherein the spacer is
It is characterized by being moved in accordance with the displacement of the rotating member that is rotated.

According to a twelfth aspect of the present invention, there is provided a keyboard instrument silencer according to the eleventh aspect.
When the rotating member is rotated, the spacer is moved by contacting the rotating member with the spacer.

According to a thirteenth aspect of the present invention, in the silencer for a keyboard instrument according to the eleventh or twelfth aspect, the position of the shaft is adjusted in a vertical direction and / or a longitudinal direction of the key. The present invention is further characterized by further comprising a shaft position adjusting means capable of performing the adjustment.

According to a fourteenth aspect of the present invention, in the muffler for a keyboard instrument according to any one of the eighth to tenth aspects, the driving mechanism is rotatably supported at a fixed position. A supporting member, comprising a connecting member having a connecting portion rotatably connected to the spacer, wherein the spacer is moved with the displacement of the connecting member rotated about the supporting portion. Features.

In the first, second, eighth or ninth aspect, the spacer is provided between the jack and the regulating button so as to be able to move forward and backward. Therefore, by moving the spacer by the drive mechanism,
The timing at which the jack escapes from the stringing member during the silence performance can be made earlier than the timing at the time of the normal performance. In this way, the escape timing can be changed between the muted performance and the normal performance, so that the touch of the keyboard does not change during the normal performance, and the string striking member moves between the jack and the stopper during the silence performance. It is possible to prevent the keyboard from deteriorating due to being interposed therebetween. In addition, the drive mechanism is disposed at a position different from the movable direction plane of the spacer or above the spacer, thereby reducing the amount of protrusion of the silencer toward the keyboard lid,
It is possible to easily reduce the planar installation space of the muffler. Therefore, the silencer can be applied to a piano having a small planar space between the keyboard cover and the action mechanism.

According to the third or tenth aspect of the present invention, since the fixing member for supporting the driving mechanism is fixed to the shank rail, the muffler can be easily attached.
The silencer can be easily retrofitted even to a keyboard instrument without the silencer.

According to the fifth or twelfth aspect of the present invention, the spacer is moved by the rotation of the rotating member. As described above, since the spacer and the driving mechanism for moving the spacer are separated, the moving range of the spacer, adjustment of the driving mechanism, assembly,
Decomposition can be easily performed.

According to the sixth or thirteenth aspect of the present invention, the position of the shaft is changed by the shaft position adjusting means to adjust the position of the drive mechanism including the shaft or to move the shaft by the drive mechanism. It is possible to easily adjust the moving range of the spacer and the like.

[0025]

Embodiments of the present invention will be described below in detail with reference to the drawings. (1) First Embodiment (1-1) Configuration of First Embodiment FIG. 1 shows the operation of one key of a grand piano provided with a muffler according to a first embodiment of the present invention. FIG. 7 is a side cross-sectional view showing an action mechanism driven according to FIG. Here, FIG.
Are basically the same as those of the conventional grand piano, so only the main parts of the same parts as those of the conventional grand piano will be described, and the different parts will be described in detail. This action mechanism comprises a key 10,
A pen 11 driven by the operation of the key 10 and a jack 12 driven by the operation of the pen 11
And a hammer assembly (string striking member) 13 driven by the jack 12 to strike the string S. When the key is depressed, the rear end (left end in the figure) of the key 10 is raised, and the capstan 14 fixed thereto is inserted into the pen 11.
Is pushed up.

In FIG. 1, the key 10 is supported by a support frame (not shown) extending in the direction in which the keys 10 are arranged (perpendicular to the paper surface). It is designed to rotate.
Reference numeral 15 denotes a support rail, and a left end of the pen 11 is rotatably supported at an end (left end in the drawing) of the support rail 15. A substantially L-shaped jack 12 is rotatably attached to a free end (right end in the figure) of the pen 11 in the vicinity of a bent portion thereof. Here, the jack 12 is a large jack 1 extending diagonally upward.
2A and a small jack 12B substantially orthogonal to the large jack 12A. In addition, pen 1
A support 16 is attached to the center of the support 1.
The jack 12 is urged in a counterclockwise direction by a leaf spring 16A attached to the jack 6. An intermediate portion of the repetition lever 17 is rotatably attached to the upper end of the support 16. Repetition lever 17
A long hole 17A penetrating in the vertical direction is formed in the right end of the large jack, and the upper end of the large jack 12A is inserted into the long hole 17A.

Next, reference numeral 18 denotes a shank rail.
A hammer flange 13 a constituting a base of the hammer assembly 13 is fixed to the shank rail 18. At the left end of the hammer flange 13a, a hammer shank 21 to which a hammer head 20 is fixed at the tip is attached rotatably in the up-down direction. A roller 22 is attached to the lower surface of the base end of the hammer shank 21. The lower surface of the roller 22 is brought into contact with the upper surface of the repetition lever 17 with a slight gap from the upper end surface of the large jack 12A inserted into the long hole 17A of the repetition lever 17. Further, a regulating rail 19 extending in the arrangement direction of the keys 10 is attached to the shank rail 18. A regulating button 23 whose position in the vertical direction can be adjusted is attached to the regulating rail 19, and a felt pad 23A with which the tip of the small jack 12B abuts is attached to the lower end surface of the regulating button 23. .

Next, the silencer according to the present embodiment will be described. The silencer includes a stopper (stopper mechanism) 3
0 and a spacer section 31. The stopper portion 30 has a shaft 33A extending in the direction in which the keys 10 are arranged.
A plate-shaped hammer stopper 33B extending in the arrangement direction of the keys 10 is fixed to A. Also, hammer stopper 33B
A felt pad 33C with which the hammer shank 21 abuts is attached to the right side surface. Here, the shaft 33A
Is rotatable within a predetermined angle range by a drive mechanism (not shown) such as a motor. Under this configuration, axis 3
When the 3A is turned, the hammer stopper 33B is turned, as shown in FIG. 2, so that the mounting surface of the felt pad 33C is located within the movement range of the hammer shank 21. In this state, when the key 10 is depressed, as shown by the two-dot chain line in the figure, before the hammer head 20 hits the string S, the hammer stopper 33B
1 is prevented from rotating. On the other hand, when the hammer stopper 33B is arranged at the position shown in FIG. 1, as shown by the two-dot chain line in FIG.
The string S is struck without preventing rotation of the zero. By rotating the shaft 33A with a wire connected to the pedal instead of the motor, the hammer stopper 3 is rotated.
3B may be rotated.

FIG. 3 is a side sectional view showing the spacer portion 31 together with the peripheral structure. The spacer section 31 has two spacers 35 extending in the direction in which the keys 10 are arranged, and a spacer holder guide (fixing member) 34 that supports both ends of each spacer 35 is provided. Here, FIG. 4 is an exploded perspective view of the spacer holder guide 34 and the spacer 35.
As shown in FIGS. 3 and 4, the spacer holder guide 34
Is a mounting portion 34A having a U-shaped cross section,
Guide portion 34C having a gap 34B extending in a substantially horizontal direction
It is composed of The mounting portion 34 </ b> A is arranged so as to sandwich the shank rail 18, and is fixed to the shank rail 18 by screws 36 and 37. A lubricating sheet such as a fluororesin is adhered to the inner surface of the gap 34B of the guide portion 34C, and the spacer 35 is slidably supported by the gap 34B. The upper portion of the guide portion 34C is formed shorter than the lower portion so that the guide portion 34C can slide while avoiding the bent portion 35a of the spacer 35, whereby the spacer 35 can be slid toward the regulating button 23 side. It has become.

The spacer 35 is composed of a spacer holder 35A having a substantially L-shaped cross section and extending in the direction in which the keys 10 are arranged, and a flexible member 35B attached to the lower surface of the spacer holder 35A. The flexible member 35B is provided so as to protrude toward the regulating button 23 so as to correspond to the number and the interval of the regulating buttons 23. Further, both ends 3 of the bent portion 35a of the spacer holder 35A
A coil spring 38 is disposed between the spacer 5b and the spacer holder guide 34, and urges the spacer 35 in a direction opposite to the regulating button 23 side (right side in FIG. 3). Here, the spacer holder 35A
As the flexible member 35B, a felt, a cloth, rubber, or the like is used. The number of the spacers 35 may be increased or decreased by changing the length of the spacers 35 in the arrangement direction of the keys 10. in this case,
The number of spacer holder guides 34 is increased or decreased according to the number of spacers 35.

The mounting portion 34A of the spacer holder 34
, A shaft 40 extending in the arrangement direction of the keys 10 is rotatably attached by a shaft fixing member 40A. Here, a cushioning material 40B is provided between the shaft 40 and the shaft fixing member 40A.
Is inserted. A plate-like spacer lever (rotating member) 41 is attached to the shaft 40.
The spacer lever 41 rotates in accordance with the rotation of. The lower end of the spacer lever 41 is
Is abutted on the bent portion 35a. Under this configuration, FIG.
When the shaft 40 is rotated clockwise, the spacer lever 41 is rotated, whereby the spacer 35 is moved toward the regulating button 23 against the urging force of the coil spring 38 as shown in FIG. In this manner, the flexible member 35B is
And the small jack 12B.

(2) Operation of the First Embodiment (2-1) During Normal Performance Next, the operation of the grand piano having the above configuration will be described. When the key 10 is depressed, the capstan 14 attached to the key 10 pushes up the pen 11 and the pen 1
Rotate 1 counterclockwise. Accordingly, the jack 1 rotatably attached to the free end of the pen 11
The second jack large 12A pushes up the roller 22 to rotate the hammer shank 21 clockwise (FIG. 1). Thereafter, when the small jack 12B comes into contact with the regulating button 23, the rotation direction is changed clockwise against the urging force of the leaf spring 16A, and the large jack 12A moves rightward to the hammer shank 21. Separate from the attached roller 22. The hammer shank 21 separated from the jack 12 continues to rotate due to its inertial force, and strikes the string S corresponding to the key pressed by the hammer head 20 (indicated by a two-dot chain line in FIG. 1).

Next, when the key is released, the pen 11 pivots clockwise and the hammer shank 21 pivots counterclockwise, contrary to the time of key depression, and is attached to the end of the pen 11. Hammer shank 21 on cushion 42
Abuts and comes to rest. With this operation, Jack 1
The engagement state between 2B and the regulating button 23 is gradually released, the jack 12 rotates counterclockwise, the large jack 12A moves directly below the roller 22, and returns to the initial position before the key is pressed. The above operation is the same as that of a conventional grand piano.

(2-2) At the time of silence performance Next, when performing a silence performance, when a player pushes a switch (not shown) or the like, the hammer stopper 33B is rotated clockwise by a predetermined angle, and the hammer shank is rotated. 21
(Fig. 2). At the same time, the shaft 40 is rotated, and the spacer lever 41 is rotated clockwise by a predetermined angle to move the spacer 35 to the regulating button 23 side. Thereby, the flexible member 35B
Is inserted between the regulating button 23 and the small jack 12B (FIGS. 2 and 5). At this time, the flexible member 35B is arranged to be spaced apart from the regulating button 23 by a small distance.

When the key 10 is depressed in this state, the capstan 14 rotates the wippen 11 counterclockwise as in the case of normal performance, and the large jack 12A
2 is pushed up, and the hammer shank 21 is rotated clockwise. Thereafter, the small jack 12B comes into contact with the spacer 35, and the large jack 12A
From the lower surface of the roller 22 (FIGS. 2 and 5). As a result, the jack 12 is separated from the roller 22 attached to the hammer shank 12 at a position lower than during normal performance. The hammer shank 21 that continues to rotate away from the jack 12 abuts against the hammer stopper 33B just before the hammer head 20 hits the string S, and is bounced clockwise (indicated by a two-dot chain line in FIG. 2). Subsequent operations are the same as in the case of normal performance.

As described above, by inserting the spacer 35 between the regulating button 23 and the jack 12 during the silence performance, the escape timing in the silence performance can be made earlier than in the normal performance. Therefore, before the hammer stopper 33 </ b> B prevents the rotation of the hammer shank 21, the jack 12 can escape, and the hammer shank 21 can be prevented from being pinched by the jack 12 and the hammer stopper 33. As a result, the repeated tapping performance of the keyboard during the silence performance is not reduced. On the other hand, by retracting the spacer 35 during normal performance, the escape timing can be made the same as that of a normal acoustic piano, and the same touch feeling as that of an acoustic piano can be obtained.

According to the present embodiment, the drive mechanism such as the shaft 40 for moving the spacer 35, the spacer lever 41, and the spacer holder guide 34 is located above the spacer 35, that is, at a position different from the plane in which the spacer 35 can move. With this arrangement, it is possible to reduce the amount of protrusion of the silencer toward the keyboard lid, and to reduce the planar installation space of the silencer. Therefore, this silencer can be applied to a small piano having a small planar space between the keyboard cover and the action mechanism. Also, the spacer section 3
1 can be attached to the shank rail 18 simply by fixing it with the screws 36 and 37, so that the silencer can be easily retrofitted even to a keyboard instrument without a silencer.

Further, since the spacer 35 is urged toward the position during normal performance by the coil spring 38, it is possible to prevent the spacer 35 from erroneously moving to the regulating button 23 during normal performance. Also,
The spacer 35 and the spacer lever 41 are only in contact with each other, and the spacer 35 and the spacer lever 41 are not connected. That is, since the spacer 35 and the drive mechanism for moving the spacer 35 are separated, adjustment of the moving range of the spacer 35 and the drive mechanism, assembling, and disassembly can be easily performed.

In the case of a silence performance, the operation of the key 10 or the like may be detected by an optical sensor or the like (not shown), and a tone signal may be output from the tone generator circuit based on the detection result. In this way, the performer can listen to the performance with headphones, speakers, and the like even during the silence performance.

(2) Second Embodiment FIG. 6 is a side sectional view showing an action mechanism driven in response to the operation of one key of a grand piano provided with a muffler according to a second embodiment. It is. The keyboard instrument according to this embodiment is the same as the first embodiment except for the spacer section 50, and therefore, the same portions are denoted by the same reference numerals and overlapping description will be omitted.

In the present embodiment, the spacer section 50 has spacer holder guides (fixing members) 51 at both ends in the arrangement direction of the keys 10. On the opposite side of the spacer holder guide 51 from the regulating button 23, a link holding member 52 having a substantially L-shaped cross section is fixed by a screw 53. FIG. 7 is an exploded perspective view of the spacer holder guide 51 and the link holding member 52. As shown in FIGS. 6 and 7, the spacer holder guide 51 includes a mounting portion 51A having a U-shaped cross section and a gap 51B in a substantially horizontal direction.
And a guide portion 51C having the same. Mounting part 5
1A is arranged so as to sandwich the shank rail 18 and is fixed to the shank rail 18 by screws 36 and 37. The spacer 54 is inserted into the gap 51B of the guide portion 51C, and slidably supports the spacer 54 on the upper surface of the guide portion 51C.

FIG. 8 is a plan view showing the spacer section 50. FIG. The spacer 54 includes a spacer holder 54A extending in the direction in which the keys 10 are arranged (the vertical direction in the figure), and a flexible member 35B attached to the lower surface of the spacer holder 54A. Both ends of the spacer holder 54A are connected to one end (support portion) of a link 56 (connection member) by a pin 55.
Are connected to each other so as to be rotatable about a substantially vertical direction (perpendicular to the paper surface). The other end (connection portion) of the link 56 is rotatably connected to the link holding member 52 by a pin 57 with the substantially vertical direction as the axial direction. Here, the distance and the positional relationship between the pins 55 on the spacer 54 side are the same as the distance and the positional relationship between the pins 57 on the link holding member 52 side. That is, the spacer 54, the link holding member 52, and the link 56 constitute a parallel link mechanism (drive mechanism). As a result, when the link 56 rotates clockwise about the pin 57 from the state shown in FIG. 8A, the spacer 54 moves parallel to the left side of the drawing as shown in FIG. 8B. It has been done. Therefore, by rotating the link 56, as shown in FIG. 9, the flexible member 35B of the spacer 54 can be inserted between the regulating button 23 and the jack 12. Conversely, by rotating the link 56 in the counterclockwise direction about the pin 57 from the state shown in FIG. 8B, the spacer 54 is translated in the right direction on the paper of FIG. A)), the spacer 54 can be retracted to the position shown in FIG.

In this keyboard instrument, when performing a silencing performance, when a player presses a switch (not shown) or the like, the hammer stopper 33B is rotated clockwise by a predetermined angle, and the hammer shank 21 is moved within the moving range of the hammer shank 21. Invade (Fig. 9). At the same time, the link 56 is rotated to move the spacer 54 toward the regulating button 23, and the flexible member 35B is inserted between the regulating button 23 and the small jack 12B (FIG. 9). ). Therefore, as in the first embodiment, the escape timing during the silence performance can be made earlier than during the normal performance. As a result, it is possible to obtain the same touch sensation as that of an acoustic piano during a normal performance without incurring a deterioration in the continuous tapping performance of a keyboard during a silence performance.

According to this embodiment, the link 56 is connected to the upper surface of the spacer 54 to form a link mechanism.
By arranging the drive mechanism above the spacer 35, the amount of protrusion of the silencer toward the keyboard can be reduced, and the planar installation space of the silencer can be reduced. Therefore, similarly to the first embodiment, the silencer can be applied to a small piano having a small planar space between the keyboard cover and the action mechanism.

(3) Modifications (3-1) Modification 1 In the first embodiment described above, the case where the spacer 35 is slidably supported by the guide portion 34C of the spacer holder guide 34 has been described. However, the present invention is not limited to this. As shown in FIG. 10, the spacer 35 is fixed to the lower end of the spacer lever 41, and the spacer
0 (A)) and the position during normal performance (FIG. 10 (B)). With this configuration, the configuration of the spacer holder guide can be simplified.

(3-2) Modification 2 In the case where the spacer is fixed to the lower end of the spacer lever, the position of the shaft arranged on the spacer holder guide can be changed, so that the moving range of the spacer and the position of the driving mechanism can be changed. Adjustment or the like may be performed.

FIG. 11 is a side sectional view showing a spacer portion capable of changing the position of the shaft 40 together with its peripheral structure.
FIG. 2 is an exploded perspective view of the spacer portion. As shown in FIGS. 11 and 12, the spacer holder guide 71 includes a fixing member 71A fixed to the shank rail 18, a fixing member (shaft position adjusting means) 71B having a long hole Y extending in the vertical direction, and a key 10. (See FIG. 1)
It is called left and right direction. ), And a fixing member (shaft position adjusting means) 71C having an elongated hole X extending to the upper end of the fixing member 71C. here,
The fixing member 71A is fixed to the shank rail 1 by a screw 71D.
8 is fixed. The fixing member 71B is provided with a screw 71E passing through the elongated hole Y extending in the up-down direction.
It is fixed to. The fixing member 71C is fixed to the fixing member 71B by passing a screw 71F through the elongated hole X extending in the left-right direction. Also, the fixing member 71B and the fixing member 71
The shaft 40 is rotatably supported between the shaft C and the shaft C. Therefore, by changing the screwing position of the fixing member 71B within the range of the long hole Y, the vertical position of the shaft 40 can be changed. Similarly, if the screwing position of the fixing member 71C is changed within the range of the long hole X, the shaft 4
0 can be changed in the left-right direction.

The upper end of a substantially L-shaped spacer lever 72 is fixed to the shaft 40, and the spacer 35 is fixed to the lower end of the spacer lever 72. This allows the shaft 40
By rotating the spacer lever 72 around
The spacer 35 can be moved between a position during silence performance (FIG. 11A) and a position during normal performance (FIG. 11B).

According to this configuration, the position of the shaft 40 can be changed vertically or horizontally by changing the vertical screwing position of the fixing member 71B with respect to the fixing member 71A or the horizontal screwing position of the fixing member 71C. It is possible to do. Therefore, the movement range of the spacer 35 fixed to the shaft 40 via the spacer lever 72, the position adjustment of the driving mechanism, and the like can be easily performed.

Further, by disposing the shaft 40 almost directly above the spacer 35 as compared with the case of the first modification, the amount of protrusion of the silencer toward the keyboard lid can be further reduced, and the flatness of the silencer can be reduced. A compact installation space can be reduced. Further, the distance between the shaft 40, which is the center of rotation of the spacer 35 fixed to the spacer lever 72, and the spacer 35, that is, the turning radius can be increased without increasing the amount of protrusion toward the keyboard cover. Thus, the spacer 35 can be moved substantially in parallel along the inclined surface of the regulating button 23. In addition, although the case where the position of the shaft 40 can be changed vertically and horizontally has been described, it may be possible to change only one of the vertical and horizontal directions.

(3-3) Modified Example 3 In Modified Example 2, the case where the position of the shaft 40 can be changed has been described. However, the present invention is not limited to this, and the position of the spacer can be changed. Is also good. For example, FIG.
As shown in FIG. 7, by forming a long hole Y extending in the vertical direction in the spacer and fixing the spacer lever 72 and the spacer through the screw 71E in the long hole Y, the position of the spacer can be changed up and down. . In this case, as shown, instead of the fixing members 71A and 71B, the position of the shaft 40 may be changed only in the left-right direction by using a fixing member 71AB having no long hole Y. This makes it possible to easily adjust the moving range of the spacer, the position of the driving mechanism, and the like, similarly to the second modification.

(3-4) Fourth Modification In the above-described second embodiment, a case has been described in which the link mechanism is formed by connecting the link 56 to the upper surface of the spacer 54, but the present invention is not limited to this. In short, what is essential is that the drive mechanism is arranged at a position different from the plane F (indicated by a broken line in FIG. 14) including the movable direction of the spacer 54.
For example, as shown in FIG. 14, a link mechanism may be configured by connecting a link 56 to the lower surface of the spacer 54. Also in this case, the amount of protrusion of the silencer toward the keyboard lid can be reduced, and the planar installation space of the silencer can be reduced.

(3-5) Modification 5 In the above embodiment, the case where the present invention is applied to a grand piano has been described. However, the present invention is not limited to this, and is widely applied to keyboard instruments such as upright pianos. Can be applied.

[0054]

As described above, according to the present invention, it is possible to maintain the touch feeling of the keyboard during normal performance without deteriorating the continuous tapping performance of the keyboard during silence performance, and to install the silencer in a planar manner. Space can be easily reduced in size.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing an action mechanism of a grand piano including a silencer according to a first embodiment of the present invention.

FIG. 2 is a side sectional view showing an action mechanism during silence performance of the grand piano.

FIG. 3 is a side sectional view showing a spacer portion of the action mechanism together with its peripheral configuration during a normal performance.

FIG. 4 is an exploded perspective view of a spacer holder guide and a spacer of the spacer section.

FIG. 5 is a side sectional view showing the spacer portion together with its peripheral configuration during silence performance;

FIG. 6 is a side sectional view showing an action mechanism of a grand piano including a sound deadening device according to a second embodiment of the present invention.

FIG. 7 is an exploded perspective view of a spacer holder guide and a link support member of the action mechanism.

FIG. 8A is a plan view showing a spacer section of the action mechanism during a normal performance, and FIG. 8B is a plan view showing the spacer section during a silence performance.

FIG. 9 is a side sectional view showing an action mechanism during silence performance of the grand piano.

10A is a side cross-sectional view showing a spacer portion of an action mechanism and its peripheral configuration during a silence performance of a grand piano provided with the silencer according to Modification Example 1, and FIG. FIG. 4 is a side sectional view showing the spacer portion together with its peripheral configuration at the time.

FIG. 11A is a side sectional view showing a spacer portion of an action mechanism and its peripheral configuration during silence performance of a grand piano equipped with a silencer according to Modification Example 2, and FIG. FIG. 4 is a side sectional view showing the spacer portion together with its peripheral configuration at the time.

FIG. 12 is an exploded perspective view of the spacer section.

FIG. 13 is an exploded perspective view of a spacer portion of an action mechanism of a grand piano including the silencer according to the third modification.

FIG. 14 is a side cross-sectional view showing a spacer portion of an action mechanism of a grand piano including a silencing device according to a modification 4 together with a peripheral configuration thereof.

FIG. 15 is a side sectional view showing an action mechanism of a grand piano including a conventional silencer.

[Explanation of symbols]

1, 12, jack 2, 23 ... regulating button, 3, 35, 54 ... spacer, 5, 21 ...
Hammer shank, 10 ... key, 11 ... pen, 13
... hammer assembly (string striking member), 18 ... shank rail, 20 ... hammer head, 30 ... stopper part (stopper mechanism), 31, 50 ... spacer part, 33B
... hammer stopper, 34, 51, 60, 71 ... spacer holder guide (fixing member), 38 ... coil spring,
40 ... shaft (drive mechanism), 41, 72 ... spacer lever (drive mechanism), 56 ... link (connection member), 71
A, 71B, 71C, 71AB: fixing member (shaft position adjusting means), S: string

Claims (14)

[Claims] A string striking member for striking the string; a key; a jack for pushing up the string striking member in response to movement of the key; A regulating button for changing the direction of movement; and a stopper mechanism provided to be able to advance and retreat in the movement range of the stringing member, and for preventing the stringing member from striking when the stringing member is moved into the movement range. In the keyboard instrument, the regulating button is provided between the jack and the regulating button so as to be able to advance and retreat along an inclined surface of the regulating button, and when entering between the jack and the regulating button, the regulating button A spacer for changing the direction of movement of the jack in place of: a position between the jack and the regulating button; And a drive mechanism for moving the spacer between a position away from the position, the drive mechanism is a keyboard instrument, characterized in that arranged in the movable direction plane different from the position of the spacer. 2. A string, a striking member for striking the string, a key, a jack for pushing up the striking member in accordance with the movement of the key, and a part of the jack, A regulating button for changing the direction of movement; and a stopper mechanism provided to be able to advance and retreat in the movement range of the stringing member, and for preventing the stringing member from striking when the stringing member is moved into the movement range. In a keyboard musical instrument, the movement direction of the jack is changed in place of the regulating button when the jack enters the space between the jack and the regulating button. A spacer; and a spacer between a position between the jack and the regulating button and a position retracted from the position. And a drive mechanism for moving the said drive mechanism is a keyboard instrument, characterized in that it is disposed above the spacer. 3. The apparatus according to claim 1, further comprising: a shank rail supporting the string striking member; and a fixing member fixed to the shank rail and supporting the driving mechanism.
Alternatively, the keyboard instrument according to claim 2. 4. The driving mechanism has a shaft rotatably provided, and a rotating member fixed to the shaft and rotated by the rotation of the shaft. 4. The keyboard musical instrument according to claim 1, wherein the keyboard musical instrument is moved in accordance with the displacement of the rotating member. 5. When the rotating member is rotated,
5. The spacer is moved by the rotating member abutting on the spacer. 6.
Keyboard instruments described in. 6. The keyboard musical instrument according to claim 4, further comprising a shaft position adjusting means for adjusting the position of the shaft in a vertical direction and / or a longitudinal direction of the key. . 7. The driving mechanism includes a connecting member having a supporting portion rotatably supported at a fixed position and a connecting portion rotatably connected to the spacer, wherein the spacer connects the supporting portion. The keyboard musical instrument according to any one of claims 1 to 3, wherein the keyboard musical instrument is moved in accordance with a displacement of the connecting member that is rotated about a center. 8. A key, a string striking member for striking a string, a shank rail supporting the string striking member, a jack for pushing up the string striking member in response to the movement of the key, and a part of the jack. A silencing device for a keyboard instrument, comprising: a regulating button that abuts the jack to change the direction of movement of the jack. A stopper mechanism for preventing striking of the string striking member when the string is struck, and a stopper mechanism is provided between the jack and the regulating button so as to be able to advance and retreat along the inclined surface of the regulating button, and the jack and the regulating button are provided. A spacer for changing the direction of movement of the jack in place of the regulating button when invading between the jack and the jack. A driving mechanism for moving the spacer between a position between the regulating button and a position retracted from the position, wherein the driving mechanism is disposed at a position different from a plane in which the spacer can move. A silencer for a keyboard instrument. 9. A key, a string striking member for striking a string, a shank rail supporting the string striking member, a jack for pushing up the string striking member in response to the movement of the key, and a part of the jack. A silencing device for a keyboard instrument, comprising: a regulating button that abuts the jack to change the direction of movement of the jack. A stopper mechanism for preventing striking of the string striking member when the string is struck; and a stopper mechanism provided between the jack and the regulating button so as to be capable of moving forward and backward. A spacer for changing the direction of movement of the jack in place of the rating button; a position between the jack and the regulating button; And a drive mechanism for moving the spacer between the space and the position retracted from the space, wherein the drive mechanism is disposed above the spacer. 10. The muffler for a keyboard instrument according to claim 8, further comprising a fixing member fixed to the shank rail and supporting the driving mechanism. 11. The driving mechanism has a shaft rotatably provided, and a rotating member fixed to the shaft and rotated by the rotation of the shaft. The muffler for a keyboard instrument according to any one of claims 8 to 10, wherein the muffler is moved in accordance with the displacement of the rotating member. 12. The keyboard musical instrument according to claim 11, wherein when the rotating member is rotated, the spacer is moved by contacting the rotating member with the spacer. Silencer. 13. The apparatus according to claim 11, further comprising shaft position adjusting means for adjusting a position of the shaft in a vertical direction and / or a longitudinal direction of the key.
3. The silencing device for a keyboard instrument according to 2. 14. The driving mechanism includes a connecting member having a supporting portion rotatably supported at a fixed position and a connecting portion rotatably connected to the spacer, wherein the spacer connects the supporting portion with the spacer. The muffler for a keyboard instrument according to any one of claims 8 to 10, wherein the muffler is moved in accordance with the displacement of the connecting member that is rotated about a center.