JP5190769B2 - Keyboard device for electronic musical instruments - Google Patents

Description

  The present invention relates to a keyboard device for an electronic musical instrument.

  In a keyboard device for an electronic musical instrument, the key usually has a hollow portion surrounded by an upper wall, a front wall, and a side wall, the rear portion is supported by a rotation fulcrum, and the front portion is guided by a key guide. It is designed to rotate in the vertical direction. The key guide extends from the key frame into the hollow portion of the key and is disposed so as to contact the inner surface of the side wall of the key, and guides the vertical movement by preventing the key from swinging in the left-right direction.

  However, with such a key guide, it is not possible to prevent the tilt of the key (tilt in the left-right direction) when viewed in the longitudinal direction of the key from the performer side. In particular, as shown in FIG. 1, the key of a keyboard instrument is composed of a white key and a black key, and the white key has a different planar shape depending on the positional relationship with the black key. That is, as shown by the pitch names shown in the lower part of FIG. 1, the D, G, A keys are substantially symmetrical, and the E, B keys are asymmetrical shapes in which a concave portion for black key arrangement is formed on the left side. The C and F keys are asymmetrical, with a black key recess on the right side. When these keys are injection-molded with resin, the molded product is distorted due to the difference in shrinkage at each part while it is cooled and solidified. As a result, when the white keys are arranged in the order of the pitch names, the top surfaces of the keys become uneven. FIG. 2 shows the front end surfaces of the white key W and the black key B, and shows a state in which the white key W is tilted.

  Various means have been proposed to deal with this. In the key guide described in Patent Document 1, a protruding portion from the front end of a key frame (keyboard chassis) is bent upward corresponding to each key to form an insertion portion, and a guide material is inserted into this to constitute a key guide The black key is provided with one key guide, and the white key is provided with two key guides. The inclination of the white key is corrected by changing the inclination by deforming the two insertion portions.

  The key guide of Patent Document 2 forms a groove extending in the vertical direction at the rear end of the key, and a guide pin loosely fitted in the groove is inserted into the key frame (keyboard chassis) from the rear to the front of the key, By changing the direction of the guide pin, the tilt of the key to the left and right is adjusted.

The key guide described in Patent Document 3 is such that a guide piece standing from a key frame is covered with a cap having a receiving hole for the guide piece, and the inner surface of the side wall of the key is guided by this cap. By preparing a cap with eccentric holes and selecting a cap that matches the distortion of the key, or by enlarging the receiving hole and adjusting the position in the left-right direction, the keys are arranged.
JP-A-8-179758 No. 7-43757 Japanese Patent No. 3702874

  However, the key guide of Patent Document 1 adjusts the inclination by plastically deforming the insertion portion formed by bending the protruding piece of the sheet metal upward, and the plastic deformation is performed at the base of the insertion portion. Since it is the upper end of the guide material that is inserted into the insertion portion, the deformed portion and the guide portion are separated from each other, and accurate adjustment is difficult. Moreover, the material is limited to that of sheet metal. Although the key guide of Patent Document 3 also has a different direction, the guide position at the tip of the pin is changed by deformation at the base of the guide pin, so the deformed portion and the guide portion are separated, and accurate adjustment is difficult. The guide pins are limited to those made of metal. Since the key guide of Patent Document 3 is adjusted at the position of the receiving hole with respect to the guide piece, it can only adjust the position in the left-right direction and cannot adjust the key inclination. Thus, it has been difficult for the conventional key guide to accurately correct the key inclination.

  An object of the present invention is to provide a keyboard device for an electronic musical instrument that has a key guide that solves such problems, can easily correct the inclination of the key easily, and is not limited to metal. To do.

In order to achieve the above object, the present invention provides a key having a hollow portion sandwiched between two side walls extending in the longitudinal direction of the key, and a key frame that is installed in the instrument body and supports the key so as to be rotatable in the vertical direction. , and a key guide for guiding the key in the vertical direction, the key guide includes a guide portion for guiding the vertical movement of the key in contact with both the inner surface of the side wall of the key within the hollow portion, the guide portion is 1 A plurality of keys are provided at different heights, the position in the key width direction can be relatively adjusted, and the upper surface of the key can be adjusted by relatively adjusting the positions in the key width direction of the plurality of guide portions. It is an object of the present invention to provide a keyboard device for an electronic musical instrument characterized by being horizontally adjustable .

  In the present specification and claims, the one closer to the performer in the electronic musical instrument and its keyboard device is referred to as the front, and the farther away is referred to as the rear.

  (1) In the electronic keyboard instrument according to the first aspect of the present invention, the key guide for guiding the key in the vertical direction includes a guide portion that contacts the inner surface of the side wall of the key and guides the vertical movement of the key. A plurality of parts are provided at different heights with respect to one key, and the position in the key width direction can be relatively adjusted. Therefore, by adjusting the position of the guide parts located at different heights in the key width direction, the contact position with respect to the inner surface of the side wall of the key can be made different in the height direction corresponding to the inclination of the key. Key tilt can be corrected. Since the correction is performed by changing the position of the contact portion itself with the key, the adjustment can be easily and accurately performed. Further, since the key guide only needs to be provided with a guide portion that contacts the inner surface of the side wall of the key and guides the vertical movement of the key, the material is not limited to metal, and various materials such as plastic can be used. .

  (2) In the electronic keyboard instrument of the above (1), a plurality of the key guides are provided at different positions in the key longitudinal direction with respect to one key, and the guide parts of the plurality of key guides are different from each other on the support. The contact bodies are provided at a height to support the contact bodies, and the positions of the contact bodies can be adjusted in the key width direction. In this case, the key inclination can be corrected by adjusting the position of any one of the plurality of key guides.

  (3) In the electronic keyboard instrument of (1), the key guide includes a support body that is fixed to the key frame and extends into a hollow portion of the key, and a plurality of contact bodies that are supported by the support body. The plurality of contact bodies are supported at different heights on one support body, the position in the key width direction can be relatively adjusted, and the key can be guided to move up and down. The guide part may be configured in contact with the inner surface of the side wall. In this case, the key inclination can be corrected by adjusting the position of the contact body supported by one support body in the key width direction.

  (4) In the electronic keyboard instrument of the above (1), the key guide is supported by the support fixed to the key frame and extending into the hollow portion of the key so that the position in the key arrangement direction can be adjusted by the support. The support body and the contact body are configured to contact the inner surface of the side wall of the key so as to guide the vertical movement of the key, and constitute the guide portion. . In this case, the support fixed to the key frame is used as one guide portion, and the key tilt can be corrected only by adjusting the position of the contact body, which is the other guide portion. Become.

  (5) The electronic keyboard instrument of the above (3) may be provided with the two contact bodies, one of which is fixed to the support body and the other of which can be adjusted with respect to the support body. . In this way, by fixing one of the contact bodies, adjustment only needs to be performed with the other contact body, and the one contact body does not move during the adjustment, so that the adjustment work becomes easier. .

  (6) In the electronic keyboard instrument of the above (5), the lower contact body of the two contact bodies is fixed to the support body, and the upper contact body is adjustable in position relative to the support body. can do. In this way, by fixing the lower contact body, the adjustment only needs to be performed with the upper contact body that is easy to reach, and the lower contact body is not moved during the adjustment, so the adjustment work is further facilitated. It becomes.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The same or similar parts in the drawings may be denoted by the same reference numerals and description thereof may be omitted.

  FIG. 3 is a longitudinal side view showing a part of a keyboard device for an electronic musical instrument according to an embodiment of the present invention, FIG. 4 is a plan view thereof, and FIG. 5 is a front view thereof. In these drawings, a main part for explaining the structure of the key guide is extracted and shown. In FIG. 4, only one key of each of the white key and the black key shown in FIG. 5 is shown.

  The keyboard device according to this embodiment includes a key 10, a key frame 20 that is installed in the instrument body and supports the key 10, a rotation fulcrum 30 that rotatably supports the rear end of the key, and a key in the vertical direction. Key guides 40a and 40b are provided. The keys include a white key 10W and a black key 10B, all of which have a hollow portion 14 surrounded by an upper wall 11, a front wall 12, and a side wall 13.

  The key 10 is further provided with a protrusion 17 extending downward slightly toward the rear, and the key frame 20 is provided with a switch 71 below. Further, the key 10 is provided with a hook portion 18 extending downward from the front portion of the side wall 13, and the key frame 20 has an opening through which the hook portion is passed. The key frame 20 is provided with a buffer member 21 at a position where the claw portion 180 at the tip of the hook contacts, and a buffer member 22 at a position where the key contacts when the key is lowered.

  Hereinafter, the key guide of the white key 10W will be described, and the key guide of the black key 10B has the same structure as that of the white key, and thus description of common matters will be omitted.

  In this embodiment, two key guides 40a and 40b are provided at different positions in the key longitudinal direction with respect to one key. FIG. 6 is a longitudinal sectional view showing the two key guides 40a located in the front together with the key, and shows a state seen from the rear. The rear key guide 40b has the same structure as the front key guide portion 40a except for the points described below. The key guide 40a includes a rod-like support body 41a that is fixed to the key frame 20 and extends into the hollow portion of the key, and a contact body 42a that is supported by the support body. In order to fix the support body 41a to the key frame 20, an appropriate means such as screwing, adhesion, welding or the like can be used, or the key frame and the support body are manufactured as a single body by sheet metal, resin or the like. You can also The contact body 42a has a shape in which both end portions of a cylinder are hemispherical surfaces. A through hole extending in the left-right direction (key width direction) is formed in the support body 41a, and the contact body 42a is inserted into the through hole. The length of the contact body 42a is determined to be slightly smaller than the separation distance of the inner surface of the side wall of the white key 10W so as to perform a guiding function in the vicinity of the inner surface of the key side wall. Thereby, the contact body 42a constitutes a guide part for guiding the vertical movement of the key. The through hole of the support body 41a and the contact body 42a are tightly fitted, and the contact body 42a can move with respect to the through hole of the support body 41a. Retained. The position adjustment of the contact body 42a with respect to the support body 41a can be performed using, for example, a tool having two pliers-type cross levers.

  The key guide portion 40b located at the rear has the same structure as the key guide 40a, but its support body 41b is shorter than the support body 41a of the key guide 40a, and the contact body 42b is a support body at a position lower than the contact body 42a. It is different in that it is supported by 41b. Also in the rear key guide portion 40b, the contact body 42b constitutes a guide portion for guiding the vertical movement of the key. Therefore, in FIG. 6, the support body 41b is hidden behind the support body 41a, and the contact body 42b is visible below the contact body 42a. The heights of these key guides 40a and 40b are determined so as not to contact the upper wall 11 of the key 10 by pressing the key.

  According to the key guides 40a and 40b, the key inclination can be corrected as follows. FIG. 6 is a longitudinal front view of the key and the key guide part, where the alternate long and short dash line indicates the outer shape of the key before correction, and the solid line indicates the state of the key after correction, that is, the key upper surface is aligned on the same plane. Is shown. The white key 10 WL on the left side in the figure is formed in a shape in which the side wall 13 is inclined with respect to the upper wall 11. When the key is attached to the key frame, before correction, the contact bodies 42a and 42b protrude from the support body 41a to the left and right by the same distance. As a result, the key guides so that the side wall 13 extends in the vertical direction. The key top surface was tilted so that the right side was lowered. On the other hand, adjustment was made to move the contact body 42b of the rear key guide portion 40b to the right by the distance d1, and as a result, the side wall 13 was tilted from the vertical direction, but the upper surface was horizontal.

  The white key 10WR on the right side is not uniform in the thickness of the side wall 13 and the outer surface is perpendicular to the upper wall 11, but the inner surface is formed in a shape inclined to the left as it goes from top to bottom. Is. When the key is mounted on the key frame, before correction, the contact bodies 42a and 42b protrude from the support body 41a to the left and right by the same distance. As a result, the key guides so that the inner surface of the side wall 13 extends in the vertical direction. The key top surface was tilted so that the left side was lowered. On the other hand, adjustment was made to move the contact body 42a of the front key guide portion 40a to the right by the distance d2, and as a result, the upper surface became horizontal.

  Thus, according to the key guides 40a and 40b, it is possible to correct the key inclination caused by various distortions during molding.

  Similarly, the black key 10B is provided with key guides 40a 'and 40b'. These key guides have the same structure as the key guides 40a and 40b for the white key 10W, except that the length of the contact body is determined according to the distance between the inner surfaces of the side walls of the black key 10B. Function.

  FIG. 7 is a longitudinal side view showing a part of a keyboard apparatus for an electronic musical instrument according to another embodiment of the present invention, FIG. 8 is a plan view thereof, and FIG. 9 is a front view thereof. In these drawings, a main part for explaining the structure of the key guide is extracted and shown. In FIG. 8, only one key of each of the white key and the black key shown in FIG. 9 is shown.

  Here, the key guide of the white key 10W will be described, and the key guide of the black key 10B has the same structure as that of the white key, and thus description of common matters is omitted.

  In this embodiment, one key guide 40c is provided for one key. FIG. 10 shows the key guide 40c together with the cross section of the key. The key guide 40c includes a rod-like support body 41c fixed to the key frame 20 and extending into the hollow portion of the key, and two contact bodies 421 and 422 supported by the support body at different heights. Since the key guide portion 40c has the same structure as that of the key guide portion 40a except that the key guide portion 40c includes two contact bodies, different parts will be mainly described below. The contact bodies 421 and 422 have a shape in which both end portions of the cylinder are hemispherical surfaces, and are inserted into through holes provided at two upper and lower portions of the support body 41a. The length of each contact body is determined to be slightly smaller than the separation distance of the inner surface of the side wall of the white key 10W so as to perform a guide function close to the inner surface of the key side wall. Thereby, the contact bodies 421 and 422 constitute a guide part for guiding the vertical movement of the key. The through hole of the support body 41c and the contact bodies 421 and 422 are closely fitted and can be moved, but are held in that position after the movement.

  In this embodiment, the key inclination can be corrected by one key guide 40c. In FIG. 10, the alternate long and short dash line shows the outline of the key before correction, and the solid line shows the arrangement of the key after correction, that is, the key upper surface is arranged on the same plane. In the white key 10WL on the left side in the figure, when the key is attached to the key frame, the contact bodies 421 and 422 protrude from the support body 41c to the left and right by the same distance before correction. The key was guided to extend in the vertical direction, and the upper surface of the key was tilted so that the right side was lowered. On the other hand, adjustment was made to move the lower contact body 422 to the right by the distance d1, and as a result, the side wall 13 was tilted from the vertical direction, but the upper surface was horizontal.

  When the right white key 10WR is attached to the key frame, the contact bodies 421 and 422 protrude from the support 41c to the left and right by the same distance before correction. The key was guided so as to extend, and the upper surface of the key was tilted so that the left side was lowered. On the other hand, an adjustment was made to move the upper contact body 421 to the right by the distance d2, and as a result, the upper surface became horizontal.

  Thus, according to this key guide 40c, it is possible to correct the key inclination caused by various distortions during molding.

  Similarly, the black key 10B is provided with a key guide 40c '. These key guides have the same structure as the key guide 40c for the white key 10W and function in the same manner except that the length of the contact body is determined according to the distance between the inner wall surfaces of the black key 10B. .

  The contact bodies 421 and 422 may be movable with respect to the support body 41c, or one of them may be fixed. Since the inclination of the key is determined by the relative position of the two contact bodies in the key width direction, even if one contact body is fixed, the inclination can be corrected by moving the other contact body. By doing so, the other contact body does not move during the position adjustment of one contact body, and the adjustment work becomes easier.

  Moreover, if the lower contact body 422 is fixed among the contact bodies 421 and 422 and the position of the upper contact body 421 can be adjusted, the adjustment can be performed by the upper contact body 421 that can be easily reached. Since the lower contact body 422 is not moved in, the adjustment work is further facilitated.

  11 is a longitudinal side view showing a part of a keyboard apparatus for an electronic musical instrument according to still another embodiment of the present invention, FIG. 12 is a plan view thereof, and FIG. 13 is a cross section taken along line XIII-XIII of FIG. FIG. In these drawings, a main part for explaining the structure of the key guide is extracted and shown. In FIG. 12, only two white keys and one black key are shown in FIG. Here, the key guide of the white key 10W will be described, and the key guide of the black key 10B has the same structure as that of the white key, and thus description of common matters is omitted.

  In this embodiment, one key guide 40d is provided for one key. FIG. 14 is a longitudinal sectional view showing the key guide 40d together with the key, and shows a state seen from the rear. The key guide 40d includes a support body 41d that is fixed to the key frame 20 and extends into the hollow portion of the key, and one contact body 423 that is supported by the support body. In this embodiment, the support body 41d includes a rod body 411 extending upward from the key frame 20 and a protruding portion 412 projecting from the side surface of the rod body 411 in the key width direction, and these are integrally formed. The protruding portion 412 is positioned approximately at the height of the central portion of the rod body 411, and the contact body 423 is inserted into a through-hole provided in the rod body 411 at a position higher than the rod body 411. The through hole of the rod body 411 and the contact body 423 are closely fitted and can be moved, but are held in that position after the movement. The contact body 423 and the projecting portion 412 have a shape in which both ends of the cylinder are hemispherical, and the length between the both ends of the white key 10W is so close to the inner surface of the key side wall that the guide function is achieved. It is determined to be slightly smaller than the separation distance of the inner surface of the side wall. Thereby, the contact body 423 and the protrusion part 412 comprise the guide site | part which guides the up-and-down movement of a key.

  FIG. 14 shows two types of examples of the key guide 40d. In the left key guide 40L in the figure, the protrusion 412 is above the contact body 423, and in the right key guide 40R, the contact body 423 is above the protrusion 412. Is arranged. These arrangements can be unified or mixed in any one of the keyboard devices.

  In order to correct the key inclination by using these key guides, the position of the contact body 423 located on the lower side in the left key guide 40L and the position of the contact body 423 located on the upper side in the right key guide 40R may be adjusted. The method of adjustment is the same as in the above-described embodiment. As described above, the adjustment only needs to be performed with the other contact body, and the one projecting portion 412 does not move during the adjustment, so that the adjustment work becomes easier. In particular, if the contact body 423 is arranged on the upper side where the operation is easily performed, the operation becomes easier. A similar key guide can be provided for the black key, and the lengths of the contact body and the protruding portion are determined according to the distance between the side wall inner surfaces of the black key 10.

  The support and contact body constituting the key guide described above can be made of various materials such as metal, plastic, and wood.

  FIG. 15 shows an example of a key guide provided with a lock mechanism 60 for holding the contact body in the adjusted position in a longitudinal section, FIG. 16 is a plan view thereof, and FIG. 17 is a main portion of FIG. It is an enlarged view. The support body 41 of the key guide portion 40 is formed with a vertical hole 415 along the axial direction in addition to a through hole for passing the contact body 42. The vertical hole 415 opens at the upper end surface of the support body 41, and the slider 61 is inserted therein so as to be movable up and down, and the upper end protrudes upward from the vertical hole 415. An opening 611 penetrating in the key width direction is formed at the center of the slider 61, and the contact body 42 is passed therethrough. The vertical dimension of the opening 611 is made larger than the vertical dimension of the contact body 42, and the slider 61 can slide in the vertical direction by the difference. In the vertical hole 415, a compression coil spring 612 is inserted below the slider 61 to press the slider 61 upward.

  As shown in FIG. 17, a large number of concave and convex portions 425 arranged in the key width direction are formed in a wave shape on the lower surface of the contact body 42, and a protrusion 613 protruding from the lower inner surface of the opening 611 is formed on the slider 61. Has been. Due to the force of the spring 612 acting on the slider 61, the projection 613 is engaged in a state of being pressed against the uneven portion 425.

  The lock mechanism 60 operates as follows. Normally, as shown in FIGS. 15A and 17, the spring 612 pushes up the slider 61 and the protrusion 613 engages with the concavo-convex portion 425, so that the contact body 42 is prevented from moving in the key width direction. Has been. When adjusting the arrangement interval of the keys, the slider 61 is pushed down from above against the force of the spring 612. As a result, as shown in FIG. 15B, the slider 61 is lowered and the protrusion 613 is detached from the uneven portion 425. As a result, the contact body 42 can move in the key width direction. Therefore, after the contact body 42 has moved to an appropriate position, the slider 61 can be released. Thus, the slider 61 is pushed up again by the spring 612, and the protrusion 613 engages with the concavo-convex portion 425 to prevent the contact body 42 from moving, so that an appropriate key arrangement interval is maintained.

  Note that it is desirable that the concavo-convex portions 425 arranged in a wavy shape have an inclined shape such as a triangular wave shape, a trapezoidal wave shape, or a sine curve shape, and the protrusion 613 is formed to be tapered. In this way, when the depression of the slider 61 is released, the protrusion 613 automatically enters the recess in the uneven portion 425 based on the inclination. As a result, multi-stage adjustment positions in the moving direction are easily performed. For example, as shown in FIG. 17, if the concavo-convex portions 425 are formed with a pitch p, the position adjustment is performed in multiple stages with the length p as a unit. As described above, by enabling multi-stage position adjustment, normalization can be achieved by specifying an adjustment state with a common stage display for different keyboard devices.

  A more preferable form of the rotation fulcrum 30 is shown in FIG. 18A is a longitudinal sectional view showing the rotation fulcrum 30 together with the rear portion of the key 10, and FIG. 18B is a sectional view taken along the line bb. As shown in the figure, the rotation fulcrum 30 includes a base portion 31 extending upward from the key frame 20 and a support portion 32 supported by the base portion and extending in the key width direction. Both end surfaces 320 of the support portion 32 are contact surfaces with the key side wall 13 and are formed by mutually opposing surfaces (surfaces having a curvature radius R) in one spherical surface. A circular notch is formed in the side wall 13 of the key, and a part of the support portion 32 enters into the notch and is in a contact state. The notch part of the key side wall 13 can be a through-hole penetrating the side wall, or can be a recess that opens to the inner surface of the side wall. According to this structure, regardless of the inclination of the key with respect to the support portion 32, the distance between the contact portions between both side walls of the key and both end faces of the support portion 32 is constant, so that the adjustment of the inclination is performed smoothly. However, even if the contact surface of the support portion 32 is not exactly the facing surface of one spherical surface but is a surface substantially along it, the tilt of the key side wall can be adjusted by elastic deformation to some extent.

  The present invention is not limited to the above embodiment, and various modifications can be made. For example, when fixing one of the two contact bodies supported by the support body, they are separately formed and fixed by bonding, screwing, or the like, and the support body and the contact body to be fixed are integrally formed. May be. Furthermore, it is possible to provide three or more guide parts configured as described above. In addition, the key guide has a key tilt correction function and a key vertical movement guide function, but in addition to this, an electronic keyboard instrument has no tilt correction function and only a vertical movement guide function. You may use the key guide provided with. In order to maintain the position of the contact body after position adjustment, in addition to tight fitting with the through hole of the support body, a threaded through hole is provided on the side wall of the support body, and a set screw is screwed to the tip Various holding means can be used such as contacting the contact body with the contact body.

It is a top view of the arranged keyboard. FIG. 2 is a front view showing a part of the keyboard shown in FIG. 1. It is a vertical side view which shows the principal part of the keyboard apparatus for electronic musical instruments which concerns on one Embodiment of this invention. It is a top view of the part shown in FIG. It is a front view of the part shown in FIG. FIG. 2 is a longitudinal front view of a key and a key guide for explaining correction of key inclination in the keyboard device of FIG. 1. It is a vertical side view which shows the principal part of the keyboard apparatus for electronic musical instruments which concerns on other embodiment of this invention. It is a top view of the part shown in FIG. It is sectional drawing which follows the IX-IX line of FIG. FIG. 8 is a longitudinal front view of a key and a key guide for explaining correction of key inclination in the keyboard device of FIG. 7. It is a vertical side view which shows the principal part of the keyboard apparatus for electronic musical instruments which concerns on further another embodiment of this invention. It is a top view of the part shown in FIG. It is sectional drawing which follows the XIII-XIII line | wire of FIG. It is a longitudinal front view of the key and key guide in the keyboard apparatus of FIG. It is a vertical front view which shows the other example of the key guide which can be used for the keyboard apparatus for electronic musical instruments which concerns on this invention. It is a top view of the part shown in FIG. It is a principal part enlarged view of the part shown in FIG. The rotation fulcrum which can be used for the keyboard apparatus for electronic musical instruments which concerns on this invention is shown, (a) is a vertical front view, (b) is a vertical side view.

Explanation of symbols

10: Key, 11: Upper wall, 12: Front wall, 13: Side wall, 14: Hollow part, 20: Key frame, 30: Rotating fulcrum, 40a, 40b, 40c, 40d: Key guide, 41a, 41b, 41c : Support, 42a, 42b, 421, 422, 423: contact body (guide part), 411: protrusion (guide part)

Claims (4)

A key having a hollow portion sandwiched between two side walls extending in the longitudinal direction of the key, a key frame that is installed on the instrument body and supports the key so as to be rotatable in the vertical direction, and a key guide for guiding the key in the vertical direction equipped with a,
The key guide includes a guide portion for guiding the vertical movement of the key in contact with both the inner surface of the side wall of the key within the hollow portion,
A plurality of the guide portions are provided at different heights with respect to one key, and the position in the key width direction can be relatively adjusted.
A keyboard device for an electronic musical instrument, wherein the upper surface of the key can be adjusted horizontally by relatively adjusting the positions in the key width direction of the plurality of guide parts .   The plurality of key guides are provided at different positions in the key longitudinal direction with respect to one key, and guide portions of the plurality of key guides are provided at different heights. Keyboard device for electronic musical instruments. The key guide includes one support that is fixed to the key frame and extends into the hollow portion of the key, and a plurality of contacts that are supported by the support at different heights, and the plurality of contacts body, and characterized in that in contact with both the inner surface of the side wall of the key constituting the guide portion so as to guide the vertical movement of each key is supported the position of the key arrangement direction relatively adjustably The keyboard device for an electronic musical instrument according to claim 1.   4. The keyboard device for an electronic musical instrument according to claim 3, wherein two of the contact bodies are provided, one of which is fixed to the support body, and the other is positionally adjustable with respect to the support body. .

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