JP2008304949A - Silencer for keyboard instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a silencer to be attached to an existing keyboard instrument, using a simple constitution. <P>SOLUTION: A hammer shank stop rail is supported by a plurality of poles and a plurality of link mechanisms through the use of the center rail of musical instrument body and is made to advance into an operation range of a hammer shank against an energizing force of an energizing means. Also, the mounting position of the hammer shank stop rail can be easily changed, according to the height of the hammer shank of an existing keyboard instrument, and the mounting positions of the link mechanisms and the hammer shank stop rail can be changed so as not to cause interferences, according to the positions of the string and section of the existing keyboard instrument. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a silencer for a keyboard instrument that can be switched between a normal performance and a mute performance.

The keyboard instrument is provided with a silencer for switching between normal performance and silence performance. In normal performance, the hammer hits the string as the key is pressed, while in silenced performance, the hammer shank stop rail of the silencer is inserted between the hammer and the string to prevent the hammer from hitting the string. Thus, the key pressing information on the keyboard is detected by the detecting means, and an electronic sound based on the detected information is generated and output to the headphones (for example, Patent Document 1 and Patent Document 2).
JP-A-8-63149 (first to 16th pages, FIGS. 1 to 3) JP 2003-15631 A (Pages 1 to 7, FIGS. 1 to 2)

  Although a silencer has been proposed in this way, the structure of the silencer is complicated and cannot be easily attached to an existing keyboard instrument. In particular, there are existing keyboard instruments that are already sold and used in different sizes or different structures, and there is a proposal for a silencer that can be easily attached to these existing keyboard instruments. It is requested.

  The present invention has been made to solve such problems, and an object thereof is to provide a silencer for a keyboard instrument that can be retrofitted to an existing keyboard instrument with a simple configuration.

  In order to solve the above-described problems and achieve the object, the present invention is configured as follows.

According to the first aspect of the present invention, there is provided a normal performance in which a hammer having a hammer shank that operates in response to pressing of a keyboard hits a string, and a hammer shank stop rail that can be moved back and forth within the operating range of the hammer shank. In a silencer for a keyboard instrument that can be played by switching to a silenced performance that prevents the hammer from striking by entering the range,
Multiple poles attached to the center rail of the instrument body,
From a support side link portion attached to each of the poles, an operation side link portion attached to the hammer shank stop rail, and a support shaft that rotatably supports the support side link portion and the operation side link portion. A plurality of link mechanisms,
An urging means attached to an operation side link portion of at least one of the plurality of link mechanisms and retracting the hammer shank stop rail from the operating range of the hammer shank;
An operation means attached to an operation side link portion of at least one of the plurality of link mechanisms, and operating the hammer shank stop rail into an operation range of the hammer shank against an urging force of the urging means,
A plurality of mounting holes are formed at different positions in the pole axis direction in the plurality of poles, a long hole is formed in the support side link portion, a link mounting screw is inserted from the mounting hole of the support side link portion, and the pole The mounting position in the pole axis direction of the hammer shank stop rail can be changed, and the rail shank of the hammer shank stop rail can be changed. A plurality of long holes are formed in the direction, and rail mounting screws are inserted into the long holes and screwed to the operating side link portion to be fastened and fixed. The hammer shank stop rail can change the mounting position in the rail axial direction. It is the silencer of the keyboard musical instrument characterized by being.

  According to a second aspect of the present invention, the biasing means is constituted by a compression spring in which one end is locked to the operating side link portion and the other end is locked to an attachment member that is fastened together with the pole on the center rail. The silencer for a keyboard instrument according to claim 1, wherein:

  According to a third aspect of the present invention, the operation means includes a manual operation lever, one end connected to the manual operation lever, and the other end inserted into the instrument main body from the lower side to the operation side link portion. 2. The keyboard instrument silencer according to claim 1, wherein the keyboard instrument silencer is constituted by a stopped operation wire.

  With the above configuration, the present invention has the following effects.

  According to the first aspect of the present invention, the hammer shank stop rail is supported by the plurality of poles and the plurality of link mechanisms using the center rail of the instrument body, and the hammer shank stop rail is biased by the biasing means. This is a simple configuration that allows the hammer shank to enter the operating range against the above. In addition, the mounting position of the hammer shank stop rail can be easily changed according to the height of the hammer shank of the existing keyboard instrument, and so as not to interfere with the position of the string or suction of the existing keyboard instrument. The attachment position of the link mechanism or hammer shank stop rail can be easily changed, and it can be easily and reliably attached to existing keyboard instruments having different sizes or different structures.

  According to the second aspect of the present invention, the urging means is attached so as to retract the hammer shank stop rail from the operating range of the hammer shank easily and reliably without applying special processing to the existing keyboard instrument. be able to.

  According to the third aspect of the present invention, the operating means can be easily and reliably attached to a position that is difficult to see from the outside of an existing keyboard instrument.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to the embodiments.

  1 is a view showing a keyboard instrument provided with a silencer, FIG. 2 is a view showing attachment of a pole, a link mechanism, and a hammer shank stop rail, and FIG. 3 is a pole, link mechanism, hammer shank stop rail, biasing means and operation means 4 is a plan view showing attachment of the hammer shank stop rail and the link mechanism, FIG. 5 is a front view showing attachment of the hammer shank stop rail and the link mechanism, and FIG. 6 is a hammer shank stop rail and the link mechanism. 7 is a cross-sectional view taken along line VII-VII in FIG. 4, FIG. 8 is a cross-sectional view taken along line VIII-VIII in FIG. 4, and FIG. 9 is a view showing a pole.

  The keyboard instrument 1 of this embodiment is provided with a large number of keyboards 3 (only one is shown) and an action 4 in the instrument body 2. This figure shows a state in which the keyboard 3 is released during a mute performance, and some parts such as a damper are omitted.

  The action 4 includes a whippen 14, a jack 10 and a hammer 50 (only one of which is shown) provided for each keyboard 3. The whippen 14 is placed on the keyboard 3 via a capstan screw 15, and a rear end portion is rotatably supported by the center rail 13.

  The jack 10 includes a push-up portion 10a and an engaging portion 10b, and is rotatably attached to the whippen 14. A jack spring 10 c is provided between the engaging portion 10 b of the jack 10 and the whippen 14.

  The hammer 50 includes a bat 6, a hammer shank 5 extending downward from the bat 6, a hammerwood 4 extending laterally from the hammer shank 5 toward the string 18, and a hammer felt 63 attached to the tip of the hammerwood 64. It is constituted by. The hammer 50 is a part of the bat 6 and is rotatably attached to the center rail 13. In the illustrated key release state, the tip of the push-up portion 10 a of the jack 10 is engaged with the bat 6. The hammer shank 5 is in contact with the hammer rail 7 obliquely, and the hammer felt 63 is in a state of facing the string 18.

  Further, the silencer 20 according to the present invention is retrofitted between the string 18 and the hammer shank 5, and the silencer 20 includes a plurality of poles 21 and 22, a plurality of link mechanisms 23 and 24, and a hammer shank stop. The rail 25, the biasing means 26, and the operation means 27 are comprised.

  As shown in FIGS. 2 and 3, the plurality of poles 21 and 22 have support portions 21a and 22a and attachment portions 21b and 22b, and are similarly formed. As shown in FIG. 9, mounting holes 21a1 and 22a1 are formed in the support portions 21a and 22a at three positions, that is, an upper position, a center position, and a lower position, in the plurality of poles 21 and 22, respectively.

  The plurality of poles 21 and 22 are formed of an aluminum material and attached to the center rail 13 of the musical instrument main body 2. As shown in FIGS. 4 to 6, the three poles 21 are arranged on the center rail 13 so as to support the positions of both ends and intermediate portions of the hammer shank stop rail 25 (not shown). ). As shown in FIG. 2, the three poles 21 are attached by inserting the pole mounting screw 30 through the mounting hole 21b1 of the mounting portion 21b and screwing it into the mounting screw hole 13a. Fasten and fix to the rail 13.

  On the other hand, as shown in FIGS. 4 to 6, one pole 22 includes a string 18 and a section (not shown) so as to support the center rail 13 at the intermediate position of the hammer shank stop rail 25. It can be installed at a position where it does not interfere. As shown in FIG. 3, this single pole 22 is attached by inserting the pole mounting screw 31 through the mounting hole 22b1 of the mounting portion 22b and screwing it into the mounting screw hole 13b, and mounting the mounting portion 22b of the pole 22 It is fastened and fixed to the center rail 13 together with the member 26a.

  In this way, by fixing the poles 21 and 22 to the center rail 13 with the pole mounting screws 30 and 31 at positions where they do not interfere with the strings 18 and sections (not shown), a dedicated mounting member is attached to the instrument body 2. There is no need to provide it and the cost is low.

  The plurality of link mechanisms 23 and 24 are made of aluminum, and are attached to support side link portions 23a and 24a attached to the respective poles 21 and 22 and the hammer shank stop rail 25 as shown in FIGS. And a support shaft 23c, 24c that is rotatably supported by positioning the operation side link portions 23b, 24b between the pair of support side link portions 23a, 24a.

  The three link mechanisms 23 are configured to be attached to the three poles 21, as shown in FIGS. 2, 4 to 6, and the link attachment screw 32 is attached to the attachment hole of the attachment support side link portion 23a. 23a1 is inserted, selected from three positions of the upper position, the center position, and the lower position, and screwed into one mounting hole 21a1, and the support side link portion 23a is fastened and fixed to the support portion 21a of the pole 21.

  On the other hand, as shown in FIGS. 3 and 4 to 6, one link mechanism 24 inserts the link mounting screw 33 from the mounting hole 24 a 1 of the support side link portion 24 a, and moves the upper position, the center position, and the lower position. Select from three locations and screw into one mounting hole 22 a 1 to fasten and fix the support side link portion 24 a to the support portion 22 a of the pole 22.

  As shown in FIGS. 4 to 6, the attachment positions of the poles 21 and 22 and the support side link portions 23a and 24a in the pole axis direction are formed with long holes 23a4 and 24a4 in the support side link portions 23a and 24a. The mounting position in the pole axis direction is changed.

  Thus, the poles 21 and 22 and the support side link parts 23a and 24a can change the mounting position in the pole axis direction, and the hammer shank stop rail according to the height of the hammer shank 5 of the existing keyboard instrument 1 The mounting position of 25 can be easily changed.

  The hammer shank stop rail 25 is made of an aluminum material. As shown in FIGS. 4 to 6, the long hole 25a is formed in three places in the rail axial direction, and the long hole 25b is formed in one place. . A rail felt 25c is attached to the lower side of the hammer shank stop rail 25 at a position excluding the positions of the long hole 25a and the long hole 25b.

  As shown in FIGS. 2, 4 to 6, the three link mechanisms 23 have the hammer shank stop rail 25 fastened and fixed to the operating side link portion 23 b by the rail mounting screw 34. A long hole 25a is formed in the rail axial direction, and the three link mechanisms 23 are moved to a position where they do not interfere with the string 18 or section (not shown), and the rail mounting screw 34 is inserted into the long hole 25a. Then, it is screwed into the mounting hole 23b1 of the operating side link portion 23b.

  In addition, as shown in FIGS. 3 and 4 to 6, one link mechanism 24 has a hammer shank stop rail 25 fastened and fixed to the operating side link portion 24b by a rail mounting screw 35. A long hole 25b is formed in the rail 25 in the rail axial direction. One link mechanism 24 is moved to a position where it does not interfere with the string 18 or a section (not shown), and a rail mounting screw 35 is inserted into the long hole 25b. It is inserted and screwed into the mounting hole 24b1 of the operating side link portion 24b.

  As described above, the operation side link portions 23b and 24b and the hammer shank stop rail 25 can change the mounting position in the rail axial direction, and are located at the positions of the strings 18 and sections (not shown) of the existing keyboard instrument 1. Accordingly, the attachment positions of the link mechanisms 23 and 24 and the hammer shank stop rail 25 can be easily changed so as not to interfere with each other. The hammer shank stop rail 25 is attached by cutting at the position of the long hole 25b according to the size of the existing keyboard instrument 1 and shortening the length or avoiding the position of a section (not shown). be able to.

  Further, the biasing means 26 is disposed at the position of one link mechanism 24 as shown in FIGS. 1, 3, and 4 to 6. In the link mechanism 24, a support plate 24e is formed so as to connect the pair of operating side link portions 24b, and a plurality of locking holes 24e1 are formed in the support plate 24e.

  This urging means 26 has an attachment member 26a fastened together with the pole 22 to the center rail 13, and one end 26b1 locked in a locking hole 24e1 formed in the support plate 24e of the operating side link portion 24b, and the other end 26b2. And a compression spring 26b locked to the mounting member 26a.

  The urging means 26 is attached to the operation side link portion 24 b of the link mechanism 24 and urges the hammer shank stop rail 25 to be retracted from the operation range of the hammer shank 5. In this embodiment, the biasing means 26 can be easily and reliably attached so that the hammer shank stop rail 25 is retracted from the operating range of the hammer shank 5 without performing special processing on the existing keyboard instrument 1. it can.

  As shown in FIGS. 1 and 3, the operation means 27 includes a manual operation lever 27a, an adjustment link 27b, and an operation wire 27c. The manual operation lever 27 a is attached to the lower side of the keyboard instrument 1. One end 27c1 of an operation wire 27c is connected to the manual operation lever 27a via an adjustment link 27b. To be engaged with the engaging portion 24b2 of the operating side link portion 24b. An engaging groove 24b3 is formed in the engaging portion 24b2, and the other end 27c2 of the operation wire 27c is prevented from being removed by the engaging groove 24b3.

  The tension is adjusted by changing the length of the operation wire 27c by the adjustment link 27b. Thus, the operation means 27 can be easily and reliably attached to a position that is difficult to see from the outside of the existing keyboard instrument 1.

  In the silencer 20 of the keyboard instrument 1 of this embodiment, a silence box 81 connected to the sensor unit 80 is attached, and a manual operation lever 27 a is attached in the vicinity of the silence box 81.

  When the operation means 27 is not operated, the link mechanism 24 is not operated by the urging means 26, and the hammer shank stop rail 25 is in the position shown by the solid line in FIG. Therefore, in a normal performance in which the hammer 50 having the hammer shank 5 that operates in response to the key depression of the keyboard 3 hits the string 18, the hammer shank stop rail 25 is retracted from the operating range of the hammer shank 5.

  When the operation means 27 is operated, the link mechanism 24 is pulled by the operation wire 27c in the arrow direction A as shown in FIG. 1, whereby the operation side link portion 24b of the link mechanism 24 and the operation side link portion 23b of the link mechanism 23 are pulled. Rotates in the arrow direction B with respect to the poles 22 and 21. The hammer shank stop rail 25 moves from the position of the solid line to the position of the two-dot chain line by the rotation of the operation side link portions 24b and 23b, and the hammer shank stop rail 25 enters the operation range of the hammer shank 5. The hammer shank 5 is brought into contact with the rail felt 25c of the hammer shank stop rail 25, so that it is possible to switch to the mute performance that prevents the hammer 50 from hitting the string.

  The present invention can be applied to a silencer for a keyboard instrument that can be switched between a normal performance and a mute performance, and can be retrofitted to an existing keyboard instrument with a simple configuration.

It is a figure which shows a keyboard musical instrument provided with a silencer. It is a figure which shows attachment of a pole, a link mechanism, and a hammer shank stop rail. It is a figure which shows attachment of a pole, a link mechanism, a hammer shank stop rail, a biasing means, and an operation means. It is a top view which shows attachment of a hammer shank stop rail and a link mechanism. It is a front view which shows attachment of a hammer shank stop rail and a link mechanism. It is a rear view which shows attachment of a hammer shank stop rail and a link mechanism. It is sectional drawing which follows the VII-VII line of FIG. It is sectional drawing which follows the VIII-VIII line of FIG. It is a figure which shows a pole.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Keyboard instrument 2 Musical instrument main body 5 Hammer shank 13 Center rail 20 Silencer 21, 22 Pole 23, 24 Link mechanism 23a, 24a Support side link part 23b, 24b Actuation side link part 23c, 24c Support shaft 25 Hammer shank stop rail 26 attached Force means 27 Operation means

Claims (3)

A normal performance in which a hammer having a hammer shank that operates in response to pressing of a keyboard hits a string, and a hammer shank stop rail that can freely advance and retreat into the operation range of the hammer shank enters the operation range, In the silencer device for keyboard instruments that can be played by switching to the silencer performance that prevents the hammer from striking,
Multiple poles attached to the center rail of the instrument body,
From a support side link portion attached to each of the poles, an operation side link portion attached to the hammer shank stop rail, and a support shaft that rotatably supports the support side link portion and the operation side link portion. A plurality of link mechanisms,
An urging means attached to an operation side link portion of at least one of the plurality of link mechanisms and retracting the hammer shank stop rail from the operating range of the hammer shank;
An operation means attached to an operation side link portion of at least one of the plurality of link mechanisms, and operating the hammer shank stop rail against an urging force of the urging means to enter an operating range of the hammer shank;
A plurality of mounting holes are formed in the plurality of poles at different positions in the pole axial direction, a long hole is formed in the support side link portion, a link mounting screw is inserted from the mounting hole of the support side link portion, and the pole The mounting position of the hammer shank stop rail can be changed in the pole axial direction by selecting from a plurality of mounting holes and screwing and fixing to one mounting hole.
A plurality of elongated holes are formed in the rail axial direction of the hammer shank stop rail, a rail mounting screw is inserted into the elongated hole, and is screwed and fixed to the operating side link portion. The hammer shank stop rail is a rail. A silencer for a keyboard instrument, characterized in that the mounting position in the axial direction can be changed.   2. The urging means comprises a compression spring having one end locked to the operating side link portion and the other end locked to an attachment member fastened together with the pole on the center rail. A silencer for a keyboard instrument described in 1. The operation means is composed of a manual operation lever and an operation wire having one end connected to the manual operation lever and the other end inserted into the instrument body from below and locked to the operating side link portion. The muffler for a keyboard instrument according to claim 1.