JP2005208244A - Static loading variable apparatus and keyboard instrument equipped with the static loading variable apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a static loading variable apparatus and a keyboard instrument which can adjust static loadings with sufficient balance according to the taste of a player without making the player sense unnatural feeling before and after adjustment. <P>SOLUTION: Weight levers 1 of a static loading variable apparatus are formed so as to have lengths of weight levers 1 along the longitudinal direction of the levers 1 so that weight levers 1b becoming pairs with black keys 110b become longer than those of weight levers 1a becoming pairs with white keys 110a, so that variations of static loadings of respective keyboards to be changed according to moving amounts in which weight levers 1 are moved by being operated by arms which move the weight levers 1 become equal for the white keys 110a and the black keys 110b. When the static loading variable apparatus is constituted like this, even when static loadings are changed by moving the weight levers 1, since static loadings of the white keys and the black keys are changed uniformly, the difference of static loadings is prevented from occurring for the white keys 110a and the black keys 110b. As a result, the static loadings can be adjusted with sufficient balance according to the taste of the player. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a static load variable device and a keyboard instrument including the static load variable device.

Conventionally, there is a keyboard instrument provided with a static load variable device that can change the static load applied to the keyboard.
As shown in FIG. 9, the static load variable device 100 includes a rail 101, a support member 102, a stopper rail 103, a flange 104, a weight lever 105, and an arm 106.

  Of these, a plurality of rails 101 are provided on the shelf board 120, and are arranged at predetermined intervals in the arrangement direction of the keyboard 110 (direction perpendicular to the paper surface of FIG. 8). These rails 101 are composed of an upper rail 101a and a lower rail 101b. The lower rail 101b is arranged along the direction from the player side to the non-player side, and is fixed on the shelf 120. ing. On the other hand, the upper rail 101a is arranged in parallel with the lower rail 101b, and slides on the lower rail 101b along its longitudinal direction.

  The support member 102 is provided on each rail 101, and has a size such that the lower end in the height direction is fixed on the upper rail 101 a and the upper end is positioned above the keyboard 110. The support member 102 moves as the upper rail 101a slides.

  The stopper rail 103 is formed in a long shape, and is suspended above the keyboard 110 by each support member 102 so that the longitudinal direction thereof coincides with the arrangement direction of the keyboard 110. Further, the stopper rail 103 is formed in a U-shaped cross section in which both sides of the player side and the non-player side are bent downward.

  The flanges 104 are fixed above the keyboard 110 in a state of being suspended from the lower ends of the side portions of the stopper rail 103 bent by the player side, and are mounted side by side along the arrangement direction of the keyboard 110 by the same number as the keyboard 110. It has been.

  The weight lever 105 is formed in a long shape, and the other end side in the longitudinal direction is rotatably supported by the lower end of the flange 104 so that one end side in the longitudinal direction swings up and down on the non-player side. ing. The weight lever 105 is supported so that one end of the weight lever 105 is placed on the capstan screw 111 which is a projection provided on the non-player side from the support position supported by the flange 104 on the upper surface of the paired keyboard 110. ing. Further, the same number of weight levers 105 as the keyboards 110 are attached to each of the flanges 104 along the arrangement direction of the keyboards 110.

  When the keyboard 110 is depressed, the weight lever 105 is lifted at one end by the keyboard 110 and rotates around the other end. After that, the keyboard 110 is separated from the keyboard 110, further rises due to inertial movement, hits the lower end of the folded side portion of the stopper rail 103 on the non-player side, then falls downward and rests on the keyboard 110 again. During performance, the weight of the string striking device 130 and the weight lever 105 acts as a static load when the key is pressed.

  The arm 106 is installed on the outer side of each of the upper rails 101a installed on the outermost side. One end of each arm 106 is rotatably fixed to a mounting portion 123 provided on the lower surface of the shelf 120, and the other end passes through the shelf 120 and extends upward. And it is connected to the player side end of the upper rail 101a at about the middle.

  Next, a capstan wire 112 having a capstan button 113 at the tip is attached to the upper surface of the end of the non-player side of each keyboard 110 of the keyboard instrument (upright piano) provided with the static load varying device 100. When the keyboard 110 is pressed, the weipen 131 constituting the string-striking device 130 is lifted.

  A capstan screw 111 is attached to the upper surface of each keyboard 110 at a substantially middle point between the capstan wire 112 and the balance pin 122 passing through the rocking center of the keyboard 110. One end of the weight lever 105 is placed on the keyboard 110 via the capstan screw 111.

  In a keyboard instrument including the static load variable device 100 configured as described above, when the upper end of the arm 106 is operated as indicated by the arrow A and tilted toward the non-player, the upper rail 101a slides toward the non-player. The weight lever 105 moves to the non-player side as indicated by an arrow B. Then, since the distance between the fulcrum 104a of the weight lever 105 and the contact point 105a between the capstan screw 111 changes, the static load applied to the keyboard 110 can be changed.

When the static load variable device 100 configured as described above is provided, the static load can be freely adjusted according to the player's preference. (Patent Document 1)
JP 2003-216143 A

  By the way, in general, in a keyboard instrument, as shown in FIG. 10, the white key 110a is longer than the black key 110b. In addition, the static load of the white key 110a is too small compared to the black key 110b. Therefore, in order to eliminate the difference between the amount of postcard and the static load between the white key 110a and the black key 110b, the balance pin 122 serving as the rocking center of the keyboard 110 is used. 10 (a)), the black key 110b is installed on the non-player side (FIG. 10 (b)) of the middle lid 121.

  Further, the weight lever 105 described above is formed by cutting a single plate into a plurality of pieces as shown in FIG. 11, and is configured using the same shape and weight regardless of the white key 110a and the black key 110b. ing.

  However, in the conventional static load variable device 100, the distance from the rocking center of the black key 110b to the capstan screw 111 is shorter than that of the white key 110a, and the weight having the same shape and the same weight as described above. Since the lever 105 is used, when the weight lever is moved by the same distance, the amount of change in the static load of the black key 110b is smaller than that of the white key 110a. For this reason, when the static load is adjusted by the conventional static load variable device 100, there is a difference in the static load between the white key 110a and the black key 110b, which causes the player to feel a sense of discomfort associated with the difference.

  Further, in the conventional static load variable device 100, due to the influence of the string-striking device 130, the high-pitched keyboard 110 has a smaller static load than the low-pitched keyboard 110, and has the same shape and weight as described above. Therefore, if the weight lever is moved by the same distance, the ratio of the static load on the low sound side to the static load on the high sound side changes. Specifically, if the initial static load of the bass keyboard 110 is 5, the static load of the treble keyboard 110 is 1, and the increased static load is 1, the static load increases to 6 and 2, respectively. The ratio of the static load ratio of 5: 1 was 3: 1. For this reason, when the static load is adjusted with the conventional static load variable device 100, the ratio of the static load changes, so that there is a problem that the player feels a sense of discomfort associated with the change.

  Accordingly, the present invention solves the above-described problems and makes it possible to adjust the static load in a balanced manner according to the player's preference without making the player feel uncomfortable before and after adjusting the static load. An object is to provide a device and a keyboard instrument.

  The invention according to claim 1, which has been made to solve the above-described problem, is configured so that a plurality of weight levers formed in a long shape and one end side of the weight lever in the longitudinal direction swings in the vertical direction. The other end in the longitudinal direction of each weight lever is supported so as to be rotatable above the keyboard, and the upper surface of the paired keyboard is on the player side or non-player side from the support position of the weight lever. The weight lever is supported at a position where one end side of the weight lever is placed on the provided protrusion, and the weight lever is supported by arranging the weight lever side by side along the keyboard arrangement direction. Moving means for moving the support means in a direction in which the end side approaches or moves away from the projection, and the weight levers are moved simultaneously by operating the moving means. In the static load variable device capable of simultaneously changing the static load at the time of pressing the keys, the weight levers change according to the amount of movement moved by operating the moving means. The amount of change in the white key and the black key is the same.

  With this configuration, even if the weight lever is moved and the static load is changed, the static load of the white key and the black key changes uniformly. Is prevented. Therefore, by using this static load variable device, it is possible to adjust the static load in a well-balanced manner according to the player's preference without causing the player to feel a sense of discomfort associated with the difference in the static load.

  In addition, as described in claim 5, the weight lever is divided into a plurality of blocks from a low tone to a high tone, and the amount of change in static load accompanying the movement of the black key and the white key is the same in the same block. The static load may be different from other blocks. In that case, as described in claim 6, it is preferable that the amount of change in the static load of each block increases as the bass side increases.

  By the way, as a specific shape of the weight lever, as described in claim 2, it is preferable to form a cross-sectional area perpendicular to the longitudinal direction so that the one that is paired with the black key is thicker than the white key. . In this case, as described in the third aspect, the width in the arrangement direction of the weight levers may be formed so that a pair with the black key is wider than the white key. In this way, when a plurality of weight levers are cut out from a single flat plate, it is possible to easily cut out a pair of white keys or black keys by simply changing the width. Alternatively, as described in claim 4, the length of the weight lever along the longitudinal direction may be formed so that the one that is paired with the black key is longer than the white key.

  Next, the invention according to claim 7 is that the plurality of weight levers formed in an elongated shape and the other of the weight levers in the longitudinal direction so that one end side in the longitudinal direction of the weight lever swings in the vertical direction. The end side is pivotably supported above the keyboard, and the weight lever is mounted on a projection provided on the player side or the non-player side from the support position of the weight lever on the upper surface of the paired keyboard. Support means for supporting one end side at a position where it is placed, and supporting each weight lever side by side along the arrangement direction of the keyboard, and a direction in which the other end side of the weight lever approaches or moves away from the protrusion by an external operation Moving means for moving the support means, and by operating the moving means to move the weight levers simultaneously, the static load at the time of pressing the keys is simultaneously measured. In the variable static load variable device, each of the weight levers is formed in a shape in which the amount of change in the static load of each keyboard that changes according to the amount of movement moved by operating the moving means increases toward the bass side. It is characterized by that.

  With this configuration, even if the static load is changed by moving the weight lever, the static load on the keyboard changes smaller as the high sound side changes, so the ratio of the low load side static load to the high sound side static load changes greatly. Is prevented. Therefore, if this static load variable device is used, the static load can be adjusted in a well-balanced manner according to the player's preference without causing the player to feel a sense of discomfort caused by the change.

Specifically, as described in claim 8, a weight lever having a longer length in the longitudinal direction may be used on the lower sound side.
As described in claim 9, when the player side of the weight lever is arranged to be aligned, or when the non-player side of the weight lever is arranged as described in claim 10, the appearance is improved. be able to.

In addition, any protrusion may be used, but it is preferable that the capstan screw is screwed into the keyboard as described in claim 11.
As described in claim 12, if the static load variable device according to any one of claims 1 to 9 is provided, a keyboard instrument capable of adjusting the static load in a balanced manner can be formed.

  Next, as described in claim 13, a plurality of weight levers formed in a long shape and one end side of the weight lever in the longitudinal direction swing in the vertical direction in the longitudinal direction of each weight lever. The other end side is rotatably supported above the keyboard, and the weight lever is provided on a protrusion provided on the player side or the non-player side from the support position of the weight lever on the upper surface of the paired keyboard. The other end side of the weight lever approaches or moves away from the protrusion by an operation from the outside with support means for supporting the weight levers at positions where one end side is placed and supporting the weight levers along the arrangement direction of the keyboard. Moving means for moving the support means in the direction, and by operating the moving means to move the weight levers at the same time, the static load at the time of pressing the keys In the static load variable device that can be changed simultaneously, the weight levers are formed with the same shape and the same weight, arranged in parallel along the keyboard arrangement direction, and the other end side along the keyboard arrangement direction. The protrusion is supported rotatably on the rotary shaft, and the amount of change in the static load of each keyboard that changes according to the amount of movement moved by operating the moving means is the same for the white key and the black key. Thus, the one attached to the black key is installed closer to the other end side of the weight lever than the one attached to the white key.

  If it does in this way, since each weight lever should just be formed with the same shape and the same weight, manufacture is simplified. Moreover, in the present invention, the one attached to the black key rather than the one attached to the white key only performs a simple positioning operation by installing a protrusion at a position closer to the other end side of the weight lever. Thus, the amount of change in the static load of each keyboard that changes according to the amount of movement moved by operating the moving means can be adjusted to be the same for the white key and the black key.

  In this case, as described in claim 14, in the static load variable device according to claim 13, the weight lever is divided into a plurality of blocks from a low sound to a high sound, and a change amount of the static load is set for each block. However, it may be set so as to increase as the bass side increases, and the protrusion may be provided at a position where the amount of change in the static load set for each block is obtained.

The best mode for carrying out the present invention will be described below with reference to the drawings.
In the following description, since the configuration of the static load variable device and the surrounding keyboard instrument has been described in detail in the background section, the description thereof will be omitted, and the configuration is necessary for the following description, and has already been described. The components described will be described with the same reference numerals. Accordingly, in the following description, only a configuration different from the static load variable device described in the background art section will be described.
[First Embodiment]
Here, FIG. 1 shows only the weight lever 1, the keyboard 110, the middle rod 121, and the balance pin 122 of the static load variable device of the present embodiment, and a side view of the side of the keyboard 110 perpendicular to the arrangement direction of the keyboard 110. It is a schematic diagram. FIG. 2 shows only the weight lever 1, the keyboard 110, and the balance pin 122 of the static load variable device of the present embodiment, and is a schematic plan view of the keyboard 110 as viewed from above.

  The weight lever 1 of the static load variable device according to the present embodiment has an amount of change in the static load of each keyboard that changes in accordance with the amount of movement moved by operating the arm 106 (see FIG. 8) that is the moving means of the present invention. The white key 110a and the black key 110b are formed to be the same. Specifically, as shown in FIG. 1 and FIG. 2, the weight lever 1b paired with the black key 110b is made longer than the weight lever 1a paired with the white key 110a in the length along the longitudinal direction of the weight lever 1. It was formed to be longer. More specifically, the change amount of the static load per movement amount of each weight lever 1 is formed to have a length in which both the white key 110a and the black key 110b are equal.

  With this configuration, even if the weight lever 1 is moved to change the static load, the static load of the white key 110a and the black key 110b changes uniformly. Differences are prevented from occurring. Therefore, by using this static load variable device, it is possible to adjust the static load in a well-balanced manner according to the player's preference without causing the player to feel a sense of discomfort associated with the difference in the static load.

In the above embodiment, the example in which the end on the player side of the weight lever 1 is aligned has been described. However, as shown in FIGS. 3 and 4, the end on the non-player side may be aligned. Of course.
[Second Embodiment]
In the second embodiment, only differences from the first embodiment will be described.

Here, FIG. 5 shows only the weight lever 1, the keyboard 110, and the balance pin 122 of the static load variable device of the present embodiment, and is a schematic plan view of the keyboard 110 as viewed from above.
In the static load variable device according to the second embodiment, the length of the weight lever 1 in the longitudinal direction is uniform, but the cross-sectional area perpendicular to the longitudinal direction has a black key 110b that is paired with the white key 110a. The difference is that the pair is made thicker. Specifically, as shown in FIG. 5, the length of the weight lever 1 in the longitudinal direction is the same for both the white key 110a and the black key 110b, but the weight in the arrangement direction of the weight lever 1 is a weight that forms a pair with the white key 110a. The weight lever 1b paired with the black key 110b is formed to be wider than the lever 1a.

In this way, when a plurality of weight levers 1 are cut out from a single flat plate, the white key 110a or the black key 110b can be distinguished and easily cut out simply by changing the cutting width.
[Third Embodiment]
In the third embodiment, only differences from the first embodiment will be described.

Here, FIG. 6 is a schematic plan view showing only the weight lever 1, the keyboard 110, and the balance pin 122 of the static load variable device of the present embodiment, and the keyboard 110 is viewed from above.
The weight lever 1 of the third embodiment is configured such that the low to high sounds are divided into a plurality of blocks 110c, and the static loads of the white key 110a and the black key 110b are the same amount of change in the same block 110c. The block 110c is configured to have a different static load. Specifically, as shown in FIG. 6, the change in the static load is small for the keyboard 110 of the high-pitched block 110c, that is, the entire weight 110 is used for the keyboard 110 of the low-pitched block 110c. The amount of change in the static load is large, that is, the entire weight lever 1 is used.

In this way, even if the static load is varied using the static load variable device, there is no difference in the static load between the black key 110b and the white key 110a in the same block 110c, but for each block 110c. In comparison, the static load on the low sound side is larger than the static load on the high sound side, and the static load changes. Therefore, the difference between the static load of the keyboard 110 of the bass block and the static load of the treble block 110c can be increased or decreased according to the player's preference.
[Fourth Embodiment]
Here, FIG. 7 shows only the weight lever 1, the keyboard 110, and the balance pin 122 of the static load variable device of the present embodiment, and is a schematic plan view of the keyboard viewed from above.

  As shown in FIG. 7, each weight lever 1 is formed in a shape in which the amount of change in the static load of each keyboard 110 that changes according to the amount of movement moved by operating the arm 106 increases toward the bass side. Specifically, as shown in FIG. 8, the static load variable device is configured by using a weight lever 1 whose length in the longitudinal direction is gradually increased from the low sound side to the high sound side.

With this configuration, even if the weight lever 1 is moved and the static load is changed, the static load of the keyboard 110 changes smaller toward the high sound side. Therefore, the ratio of the static load on the low sound side to the static load on the high sound side is Large changes are prevented. Therefore, if this static load variable device is used, the static load can be adjusted in a well-balanced manner according to the player's preference without causing the player to feel a sense of discomfort caused by the change.
[Fifth Embodiment]
Here, FIG. 9 shows only the weight lever 1, the keyboard 110, the intermediate rod 121, and the balance pin 122 of the static load variable device of the present embodiment, and a side view of the side of the keyboard 110 perpendicular to the arrangement direction of the keyboard 110. It is a schematic diagram.

  The weight levers 1 of the static load variable device of the present embodiment are formed with the same shape and the same weight, are arranged in parallel along the arrangement direction of the keyboard 110, and the other end side is a rotation axis along the arrangement direction of the keyboard 110. Is rotatably supported.

  The protrusion 111 is white so that the amount of change in the static load of each keyboard 110 that changes according to the amount of movement moved by operating the arm 106 (see FIG. 8) is the same between the white key 110a and the black key 110b. The one attached to the black key 110b is installed closer to the other end side of the weight lever 1 than the one attached to the key 110a.

If it does in this way, since each weight lever 1 should just be formed with the same shape and the same weight, manufacture is simplified.
Moreover, in this embodiment, the one attached to the black key 110b is easier than the one attached to the white key 110a to simply install a protrusion at a position closer to the other end side of the weight lever 1. Just by performing the positioning operation, the amount of change in the static load of each keyboard 110 that changes according to the amount of movement moved by operating the arm 106 is adjusted to be the same between the white key 110a and the black key 110b. Can do.

  The weight lever 1 is divided into a plurality of blocks from low to high tones, the amount of change in the static load is set for each block, and is set so as to increase toward the low side, and the protrusion is set for each block. You may install in the position used as the amount of change of the set static load.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to this embodiment at all, Of course, in the range which does not deviate from the summary of this invention, it can implement in a various aspect.

  The support member 102, the stopper rail 103, and the flange 104 correspond to the support means of the present invention, and the rail 101 and the arm 106 correspond to the movement means of the present invention.

FIG. 3 is a schematic side view of the weight lever 1, the keyboard 110, the middle rod 121, and the balance pin 122 of the static load variable device according to the first embodiment, and a side view of the keyboard 110 perpendicular to the arrangement direction of the keyboard 110. . It is the plane schematic diagram which showed only the weight lever 1, the keyboard 110, and the balance pin 122 of the static load variable device of 1st Embodiment, and looked at the keyboard from the upper direction. Only the weight lever 1 of the static load variable device, which is a modification of the first embodiment, the keyboard 110, the intermediate rod 121, and the balance pin 122 are shown, and a side view of the side of the keyboard 110 perpendicular to the arrangement direction of the keyboard 110 is shown. FIG. It is the plane schematic diagram which showed only the weight lever 1, the keyboard 110, and the balance pin 122 of the static load variable device of the modification of 1st Embodiment, and looked at the keyboard from upper direction. It is the plane schematic diagram which showed only the weight lever 1, the keyboard 110, and the balance pin 122 of the static load variable apparatus which is a modification of 2nd Embodiment, and looked at the keyboard from the upper direction. It is the plane schematic diagram which showed only the weight lever 1, the keyboard 110, and the balance pin 122 of the static load variable device of 3rd Embodiment, and looked at the keyboard from the upper direction. It is the plane schematic diagram which showed only the weight lever 1, the keyboard 110, and the balance pin 122 of the static load variable apparatus of 4th Embodiment, and looked at the keyboard from upper direction. FIG. 10 is a schematic side view of the weight 110 of the fifth embodiment, showing only the weight lever 1, the keyboard 110, the intermediate rod 121, and the balance pin 122, and viewing the side of the keyboard 110 perpendicular to the arrangement direction of the keyboard 110. It is the side surface schematic diagram which looked at the conventional static load variable device from the side surface along the arrangement direction of a keyboard. FIG. 4 is a schematic side view showing only the weight lever 1 of the conventional static load varying device, the keyboard 110, the intermediate 121, and the balance pin 122, and viewing the side surface of the keyboard 110 perpendicular to the arrangement direction of the keyboard 110. It is the plane schematic diagram which showed only the weight lever 1, the keyboard 110, and the balance pin 122 of the conventional static load variable apparatus, and looked at the keyboard from the upper direction.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,105 ... Weight lever, 100 ... Static load variable apparatus, 101 ... Rail, 101a ... Upper rail, 101b ... Lower rail, 102 ... Support member, 103 ... Stopper Rail, 104 ... Frenzy, 106 ... Arm, 110 ... Keyboard, 110a ... White key, 110b ... Black key, 111 ... Capstan screw, 112 ... Capstan wire, 113 ... Capstan button, 120 ... Shelf, 121 ... Intermediate, 122 ... Balance pin, 123 ... Mounting part, 130 ... String striking device, 131 ... Wipen

Claims (14)

A plurality of weight levers formed in a long shape;
The other end in the longitudinal direction of each weight lever is rotatably supported above the keyboard so that one end in the longitudinal direction of the weight lever swings in the vertical direction. The weight lever is supported at a position where one end side of the weight lever is placed on a protrusion provided on the player side or non-player side from the support position of the weight lever, and the weight levers are arranged along the arrangement direction of the keyboard. Supporting means for supporting;
A moving means for moving the support means in a direction in which the other end side of the weight lever approaches or moves away from the protrusion by an external operation;
In the static load variable device capable of simultaneously changing the static load at the time of pressing the keys by operating the moving means and moving the weight levers at the same time,
Each weight lever is
Variable static load characterized in that the amount of change in static load of each keyboard that changes according to the amount of movement moved by operating the moving means is the same for white keys and black keys apparatus. The static load variable device according to claim 1,
The static load variable device according to claim 1, wherein a cross-sectional area perpendicular to the longitudinal direction of each weight lever is larger in a pair with the black key than in the white key. In the static load variable device according to claim 2,
The static load variable device according to claim 1, wherein a width of each of the weight levers in the arrangement direction is wider in a pair with the black key than in the white key. The static load variable device according to claim 1,
The static load variable device according to claim 1, wherein a length along the longitudinal direction of each weight lever is longer for the pair of the black keys than for the white keys. In the static load variable apparatus in any one of Claims 1-4,
The weight lever is divided into a plurality of blocks from a low tone to a high tone, and the amount of change in static load accompanying the movement of the black key and the white key is the same in the same block. Static load variable device. In the static load variable device according to claim 5,
The static load variable device is characterized in that the amount of change in the static load of each block is configured to increase toward the lower sound side. A plurality of weight levers formed in a long shape;
The other end in the longitudinal direction of each weight lever is rotatably supported above the keyboard so that one end in the longitudinal direction of the weight lever swings in the vertical direction. The weight lever is supported at a position where one end side of the weight lever is placed on a protrusion provided on the player side or non-player side from the support position of the weight lever, and the weight levers are arranged along the arrangement direction of the keyboard. Supporting means for supporting;
A moving means for moving the support means in a direction in which the other end side of the weight lever approaches or moves away from the protrusion by an external operation;
In the static load variable device capable of simultaneously changing the static load at the time of pressing the keys by operating the moving means and moving the weight levers at the same time,
Each weight lever is
A static load variable device characterized in that the amount of change in static load of each keyboard, which changes according to the amount of movement moved by operating the moving means, is formed in a larger shape toward the bass side. The static load variable device according to claim 7,
Each of the weight levers is formed with a longer length in the longitudinal direction toward the lower sound side. In the static load variable apparatus in any one of Claims 1-8,
A static load variable device, wherein the weight levers are arranged side by side on the performer side. In the static load variable apparatus in any one of Claims 1-8,
A static load variable device in which the non-player side of the weight lever is aligned. In the static load variable apparatus in any one of Claims 1-10,
The static load variable device according to claim 1, wherein the protrusion is a capstan screw screwed into the keyboard. A keyboard instrument comprising the static load variable device according to claim 1. A plurality of weight levers formed in a long shape;
The other end in the longitudinal direction of each weight lever is rotatably supported above the keyboard so that one end in the longitudinal direction of the weight lever swings in the vertical direction. The weight lever is supported at a position where one end side of the weight lever is placed on a protrusion provided on the player side or non-player side from the support position of the weight lever, and the weight levers are arranged along the arrangement direction of the keyboard. Supporting means for supporting;
A moving means for moving the support means in a direction in which the other end side of the weight lever approaches or moves away from the protrusion by an external operation;
In the static load variable device capable of simultaneously changing the static load at the time of pressing the keys by operating the moving means and moving the weight levers at the same time,
Each weight lever is
It is formed with the same shape and the same weight, arranged in parallel along the arrangement direction of the keyboard, and the other end side is rotatably supported by a rotation shaft along the arrangement direction of the keyboard,
The protrusion is
The amount of change in the static load of each keyboard, which changes according to the amount of movement moved by operating the moving means, is the same as that of the white key and the black key rather than the one attached to the white key. The static load variable device characterized in that the one attached to the key is installed at a position closer to the other end side of the weight lever. The static load variable device according to claim 13,
The weight lever is divided into a plurality of blocks from bass to treble,
The amount of change in the static load is set for each block, and is set so as to increase as the bass side increases.
The said static protrusion is installed in the position used as the variation | change_quantity of the static load set for every block, The static load variable apparatus characterized by the above-mentioned.

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