JP3373606B2 - Grand piano - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grand piano having a mechanism for controlling and playing an electronic sound source, in addition to a normal performance mechanism for playing by striking a string. 2. Description of the Related Art Conventionally, there has been proposed a piano in which an acoustic sound source is combined with an electronic sound source so that a performance using an electronic sound source can be performed in addition to a normal piano performance. Of these, JP-A-63-216099 discloses that
Make sure that the action of the key press is not transmitted to the hammer,
A piano capable of stopping a normal performance sound (hereinafter referred to as a stringing sound) due to a stringing operation when performing with an electronic sound source is described. According to this, if you stop the stringing sound and play while listening to the performance sound from the electronic sound source with headphones etc., the performance sound will not leak to the outside, and you will be playing in collection houses or densely populated houses, or practice at night There is an advantage that the user can freely perform such operations. [0003] However, according to such a conventional technique, the touch feeling when a key is pressed differs between when a string is struck and when it is stopped. That is, since the hammer is held at the rotated position, the touch feeling is reduced by the amount that the hammer does not need to be rotated as compared with the case where a hammering sound is produced. [0004] For this reason, a skilled player is familiar with the touch feeling of a normal piano, so that the touch feeling with the string striking sound stopped is uncomfortable. There is a problem that the keys are heavy and cannot be played well even if the strings are struck even if the strings are repeated. [0005] In particular , although the prior art can be used for upright pianos, it cannot be directly applied to grand pianos. In a grand piano, an action mechanism including a hammer abuts on a key, and the key is balanced so that the key is in a stationary position while the weight is on the key. For this reason, if the hammer is lifted to a position where it comes into contact with the strings, the above-described balance is lost, and the keys are sunk when viewed from the player side. In this case, the appearance was strange and the touch feeling was uncomfortable, and in some cases, the performance could be hindered. Accordingly, the present invention provides a grand piano which can perform not only a normal piano performance but also an electronic sound source. In a grand piano in which the striking sound is stopped and the performance is performed only with the electronic sound source, the normal touch feeling of an acoustic piano is achieved. It is an object of the present invention to be able to perform with an electronic sound source without deteriorating the performance. [0007] In order to achieve the above object, the present invention has the following means for solving the problems. That is, in a grand piano equipped with a mechanism for controlling an electronic sound source based on a keyboard operation, in addition to a mechanism for hammering a string by operating a hammer when the keyboard is operated, detecting means for detecting an operation related to key press / key release. Control means for controlling the electronic sound source based on information from the detection means, and operation inhibiting means for preventing the operation of the hammer when the electronic sound source is controlled and played by the control means, The movement preventing means is disposed at a position where the movement of the hammer is stopped during a period from the moment when the hammer starts inertial movement to the time when the hammer comes into contact with the string, and the detection means is prevented from moving halfway by the movement preventing means. Means for detecting the movement of the component part, which is provided at a position where the detection of the operation related to key depression is completed before the operation of the hammer is prevented by the operation preventing means. It has been, to an electronic sound source
When playing with the key
Gran is characterized by weight from the key is locked
The configuration of the de piano is it. According to the grand piano of the present invention having the above-mentioned structure, the control means controls the electronic sound source to perform based on the information on key press / key release detected by the detection means. At this time, the operation inhibiting means inhibits the operation of the hammer from the time when the hammer starts inertial movement to the time when the hammer comes into contact with the string. Therefore, since the hammer moves to the inertial motion, even if the movement of the hammer is stopped, the touch feeling of the keyboard is not affected. Further, even if the operation of the hammer is prevented by the operation preventing means, the detection of the operation related to the key depression by the detecting means is completed, so that the performance by the electronic sound source is also performed without any problem. Here, after the hammer starts the inertial movement, the component such as the hammer shank which rotates integrally with the hammer is changed from the component such as the jack which exerts the force for starting the rotation. Separately, the rotation has shifted to inertial motion. The timing of shifting to the inertial motion can be specified by the turning position of the hammer. Therefore, the movement preventing means can be easily realized only by selectively disposing the member for stopping the rotation of the hammer at a position where the movement of the hammer is prevented when the hammer rotates and exceeds the predetermined position. can do. The detecting means is means for detecting that a component operated by a keyboard operation has moved, for example, by disposing a shutter on a hammer or the like and detecting its movement with a photo sensor. The detecting means is provided at a position where the detection of the operation related to the key press is completed before the operation of the hammer is prevented by the operation preventing means. In the present invention, the component to be detected by the detection means is an operation inhibition target (for example, a hammer shank, etc.) by the operation inhibition means, and the operation related to key depression is detected before the hammer reaches the position where the operation is inhibited. The detection means is provided so that the above is completed. If the detection means is disposed at such a position, the detection means is affected by the operation inhibition by the operation inhibition means, even though the detection means detects the movement of the component whose movement is inhibited halfway by the operation inhibition means. Thus, it is possible to complete the detection of the operation related to the key press without the need. In addition, at the time of performance by the electronic sound source, in a state that is not the key depression, the weight of the hammer is in the state according to the key, because it does not Dari sinks is key as seen from the player's side desirable. Next, an embodiment of the present invention will be described with reference to the drawings. Ground piano 1, as shown in FIG. 1, MID
When the grand piano 1 is operated by being connected to an external electronic musical instrument 7 having an I interface 3 and also having a MIDI interface 5, a performance sound is output from the electronic musical instrument 7. Also, the performance sound of the electronic musical instrument 7 can be heard via the headphones 9 without being emitted outside. The grand piano 1 is, as shown in FIG.
A key 11 that swings by the player's operation, a capstan screw 12 that rises when the key 11 is pressed, and a rotatably supported whippen rail 14 via a whippen flange 13 A wippen 15 that pivots upward by ascending and is rotatably connected to the wippen 15;
A jack 17 that rises with the wippen 15 until it contacts the jack 17, a shank roller 18 that contacts the jack 17 and separates when pushed up by the jack 17, and is rotatably supported by a shank rail 20 via a shank flange 19, The hammer shank 21 that rotates upward when the roller 18 is pushed up, a hammer 23 attached to the tip of the hammer shank 21, a string striking mechanism including a string 25 struck by the hammer 23, and the like are provided. Further, as the operation inhibiting means, hammer Shanks top rail 31 is supported by the grand piano 1 rail elevation mechanism 35 fixed to the body of the hit turn 33. Among them, a cushion felt 37 is provided on the lower surface of the hammer shank stop rail 31. Also, the rail up / down mechanism 35 is configured as shown in FIG.
As shown in (b), a bracket 41 fixed to the hammer 33 and a hammer shank stop rail 3 at one end.
A muffler lever 43 to which 1 is fixed and a leaf spring 47 for holding a ball 45 that fits into a hole of the muffler lever 43 are connected and assembled by bolts 49 and nuts 51. A knob 53 is provided integrally with the muffler lever 43. When the knob 53 is operated, the muffler lever 4 is pivoted about a bolt 49.
3 rotates. When the muffler lever 43 is rotated, the ball 45 is fitted into one of the small holes 41a and 41b formed in the bracket 41, and the muffler lever 43 can be locked at one of the two rotation positions. As a result, the hammer shank stop rail 31 moves up and down and is positioned at one of the two upper and lower positions. When the hammer shank stop rail 31 is positioned on the upper side, the hammer shank 2 is rotated when the hammer shank 21 is rotated.
The hammer 23 hits the string 25 without 1 hitting the cushion felt 37. When the hammer shank stop rail 31 is positioned downward, the hammer 23 does not hit the string 25 and the hammer shank 21
Corresponds to the cushion felt 37. Further, as shown in FIG. 2, a stepped shutter 61 and key sensors 63 and 65 are provided on the lower surface of the key 11 as detecting means for detecting an operation relating to key press / key release. Each of the key sensors 63 and 65 is a pair of a light-emitting element and a light-receiving element, and is configured to generate an ON signal when a gap between the two elements is interrupted. The stepped shutter 61 blocks the optical paths of the key sensors 63 and 65 with a certain time difference when the key 11 is pressed. These key sensors 63 and 65 are connected to a control section 71 as control means, as shown in FIG. The control unit 71 includes a well-known CPU 7
2, is configured as a logical operation circuit including a ROM 73, a RAM 74, and the like, and is connected to the key sensors 63 and 65 via an input / output interface 75. The CPU 72
A timing and a time difference at which the optical paths of the key sensors 63 and 65 are interrupted are detected, MIDI information is created based on a control program stored in the ROM 73, and transmitted to the electronic musical instrument 7 as an electronic sound source via the MIDI interface 3. The event data constituting the MIDI information is configured as data having one unit of three bytes consisting of a status byte of one byte and a data byte of two bytes. In the status byte, data indicating key press (note on), key release (note off), and the like are set, and in the data byte, a key number (note number) serving as a pitch and a keying intensity (velocity) serving as a volume ) Is set. A pedal sensor (not shown) for detecting the operation of a pedal mechanism such as a damper pedal and a soft pedal is also connected to the control unit 71. Based on this detection information, the MIDI information contains a damper function. Is also set. Grand piano 1 configured as above
In order to stop the striking sound and output the performance sound only from the electronic musical instrument 7, the knob 53 is operated prior to the performance to position the hammer shank stop rail 31 at the lower position (the state of FIG. 2). . Also, an operation switch (not shown) of the control unit 71 is turned on, and the grand piano 1 is turned on.
Is set to the MIDI output mode, and the electronic musical instrument 7 is also set to the MIDI input mode. In this state, when the player presses the key 11, the capstan screw 12 rises to rotate the wippen 15 upward, and the jack 17 that rises with the whippen 15 pushes up the shank roller 18 to push up the hammer shank. 21 is rotated. In addition, Jack 1
As 7 rises, the jack tail 17a contacts the regulating button 16, and the jack 17 rotates clockwise with respect to the wippen 15 in the figure. As a result, the shank roller 18 separates from the jack 17 and starts inertial movement with the hammer shank 21. When the hammer shank 21 moves by inertia and reaches the position indicated by the dotted line in FIG. 2, the hammer shank 21 comes into contact with the cushion felt 37 on the lower surface of the hammer shank stop rail 31. At this time, the hammer shank 21 is
It has not rotated to the position where it abuts on No. 5, and no striking sound is produced. On the other hand, when the key 11 swings, the stepped shutter 61 blocks between the light emitting element and the light receiving element of the key sensors 63 and 65, and a keyboard operation is detected. Control unit 71
Creates MIDI information in accordance with the detected key press information, and transmits this information to the electronic musical instrument 7. As a result, a performance sound is emitted from the electronic musical instrument 7. As described above , according to the grand piano 1, when the player operates the key 11, the movement of the hammer 23 is prevented, so that the performance sound is emitted only from the electronic musical instrument 7 without producing any stringing sound. Can be issued. At this time, the movement of the hammer 23 is stopped after the inertial movement is started, so that the touch feeling of the key 11 is not different from the case where the stringing sound is output. Therefore, for example, if the performance is performed while listening to the performance sound from the electronic sound source 7 with the headphones 9, the performance practice can be freely performed without disturbing the noise. Further, since the weight of the hammer 23 and the like is applied to the key 11 when the key is not pressed, the key 11 does not sink when viewed from the player side. Toko
In the grand piano 1 described above, key depression and key release
Was detected by the key movement.
Instead of, for example, a hammer shank or the like,
Detects component movements that are blocked on the way
The movements of these components detect key press / key release operations.
Out of the box,
Ano corresponds to an example of the present invention. In this way,
Movement of a component whose movement is prevented by the stop means
When the key operation is detected with
Operation to block the operation after the detection of the
Determine the location of the block. In this case, the detection means operates.
The movement of a component whose movement is blocked halfway by the blocking means
Detection of key press operation is completed
can do. Although the embodiment of the present invention has been described above,
The present invention is not limited to this, and various modes can be adopted without departing from the gist of the present invention. For example, the means for preventing the movement of the hammer is not limited to the structure shown in FIG. As another example, as shown in FIGS. 5A and 5B, a shaft 83 passed through a hammer shank stop rail 81 is rotatably supported via a bearing 85 fixed to the hammer 33. And a bracket 87 that rotates integrally with the shaft 83.
, A spring 89 is connected to one end and a wire 91 is connected to the other end. In this structure,
When the wire 91 is pulled, the metal fitting 87 moves about the shaft 83 as a fulcrum, and the hammer shank stop rail 81 rotates. As a result, the cushion felt 93 disposed on the hammer shank stop rail 81 faces downward and abuts on the hammer shank 21 to prevent the hammer 23 from striking the string, as indicated by the dashed line in FIG. 5B. . At this time, since the metal fitting 87 pulls the spring 89, the hammer shank stop rail 81 is urged to rotate in the returning direction. Therefore, the wire 91
Is released, the hammer shank stop rail 81 that has been rotated returns to its original position, and the cushion felt 9
3 is no longer in contact with the hammer shank 21. Therefore, by pulling or loosening the wire 91, the stringing sound can be stopped or emitted. As described above, with the structure operated by the wire 91, the operation lever can be disposed at a relatively free position. Therefore, a configuration in which the striking sound is stopped by depressing the pedal with a foot can be easily achieved. Further, the present invention is not limited to the mechanism for abutting the hammer shank as shown in the embodiment, but also prevents the movement of a part such as a hammer, a hammer wood, a shank roller, etc., which rotates by inertial motion integrally with the hammer. Any mechanism may be used. However, even when the movement of these parts is prevented, the movement of the hammer must be prevented after at least the tip of the jack separates from the shank roller and the hammer shifts to the inertial movement. In addition, a structure may be employed in which an operation lever for stopping the striking sound is moved by an actuator, or the hammer shank stop rail itself is moved by an actuator. In this case, the operation switch of the electronic sound source and the actuator may be linked to each other, so that when one switch is operated, the stringing sound is automatically stopped and the mode is switched to the performance mode using the electronic sound source. In addition, if the configuration of the present invention is provided in an automatic performance piano, only the sound of the electronic sound source can be heard from the headphone while operating the key according to the automatic performance data, so that no inconvenience due to noise is caused. You can practice fingering. In the embodiment, the electronic sound source is connected to an external electronic musical instrument. However, the same effect can be obtained by applying the structure of the present invention to a piano having a built-in electronic sound source. As described above, according to the present invention, in a grand piano in which the performance of an electronic sound source can be performed in addition to the performance of the hammer striking operation, the striking sound is stopped and the sound from the electronic sound source is released. Even when only the performance sound is output, the performance can be performed without impairing the normal touch feeling of the acoustic piano. In particular, it is possible to complete the detection of the operation related to the key press, even though the detection unit detects the movement of the component part whose movement is prevented halfway by the operation prevention unit. In addition, at the time of performance by the electronic sound source, in a state that is not the key depression, the weight of the hammer is configured to take the key, nor does it Dari sinks is key as seen from the player's side.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram of a schematic configuration of an embodiment. FIG. 2 is an explanatory diagram of an internal mechanism of the grand piano of the embodiment. 3A and 3B show operation preventing means in the grand piano of the embodiment, in which FIG. 3A is a partial perspective view and FIG. 3B is a partially exploded perspective view. FIG. 4 is a block diagram showing control means in the grand piano of the embodiment. FIG. 5 shows a modification of the operation preventing means,
Is a partial perspective view thereof, and (b) is an explanatory view showing its movement . [Description of Signs] 1 ... Grand Piano, 3,5 ... MIDI Interface, 7 ... Electronic Musical Instrument, 11 ... Key, 15 ...
..Wippen, 16 ... Regulating button, 1
7 ... Jack, 18 ... Shank roller, 21
... Hammer shank, 23 ... Hammer, 25
..Strings, 31, 81: hammer shank stop rail, 33: hammering, 35: rail up / down mechanism, 37, 93: cushion felt, 41:
Bracket, 43: mute lever, 45: ball, 47: leaf spring, 49: bolt, 51 ...
Nut, 53 ... knob, 61 ... stepped shutter, 6
3 ... key sensor, 71 ... control unit, 83
... shaft, 85 ... bearing, 87 ... metal fittings,
89 ... spring, 91 ... Wai ya.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification code FI G10H1 / 34 G10H1 / 34 (56) References JP-A-6-59667 (JP, A) JP-A-6-118943 (JP) JP-A-6-35445 (JP, A) JP-A-5-73029 (JP, A) JP-A-5-29091 (JP, U) JP-B-4-16796 (JP, B2) German patent Invention 3707591 (DE, C2) US Pat. No. 5,237,123 (US, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G10C 3/00 G10C 3/16 G10B 3/12 G10H 1/00 G10H 1 / 34

Claims (1)

(57) [Claims 1] A grand piano having a mechanism for controlling an electronic sound source based on a keyboard operation in addition to a mechanism for hammering a hammer and striking a string when a keyboard is operated. Detecting means for detecting an operation relating to key press / key release; control means for controlling the electronic sound source based on information from the detecting means; and controlling the electronic sound source by the control means to play the hammer. Operation inhibiting means for inhibiting the operation, the operation inhibiting means is disposed at a position where the hammer inhibits the operation of the hammer from the time when the hammer starts inertial movement to the time when the hammer comes into contact with the string. Detecting movement of a component whose movement is blocked halfway by the movement preventing means, wherein the movement relating to key depression is performed before the operation of the hammer is prevented by the movement preventing means. Detection is disposed to complete the position, when playing with an electron source, the state odor that is not depressed
The grand piano is characterized in that the weight from the hammer is locked .