JP2000347666A - Key board unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely prevent rubbing generated at the time of a black key operation from being generated between neighboring black and white keys. SOLUTION: This key board unit is constituted by engaging a black key unit 21 with white key units 31, 41 by engaging means, the engaging means are uneven parts provided in a common attaching part 52 for the black key unit 21 and in common attaching parts 52 for the white key units 31, 41, and the uneven parts are engaged each other to pisition the respective key units 21, 31, 41 in two directions of a key array direction and a key longitudinal direction, when the common attaching part 52 of the black key unit 21 is laid on the common attaching parts 52 of the white key units 31, 41 to form a prescribed key range of key board unit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a keyboard device such as an electronic musical instrument, and more particularly, to a plurality of different keys swingably supported on a common mounting portion via fulcrum portions and integrally formed of resin. The present invention relates to a keyboard device provided with a keyboard unit in which a plurality of keyboard units are formed by overlapping a common mounting portion.

[0002]

2. Description of the Related Art As a conventional keyboard apparatus of this type, for example, a keyboard apparatus described in Japanese Patent Publication No. 57-3080 is known. This keyboard device divides a one-octave keyboard into three structures, one structure consisting of five black keys and two structures formed by combing white keys every other. It is.

[0003] That is, the white key structure, which is a plastic molded product, has a comb-shaped first unit composed of four keys of a C key, an E key, a G key, and a B key, and a D key, an F key, and an A key. And a comb-shaped second unit consisting of three keys.
In each of these three structures, a key (key) portion, a mounting strip portion, and a hinge connecting portion for connecting them are integrally formed of plastic.

Therefore, in such a keyboard device,
The mounting strips of the structure consisting of a black key, the structure consisting of four white keys, and the structure consisting of three white keys are overlapped and screwed to a frame for assembly.

[0005]

However, in such a conventional keyboard device for an electronic musical instrument, in the case of a one-octave keyboard, the positioning of the two divided white key structures when they are superimposed is performed. There is no means, and therefore, the assembling work requires skill, and each key, especially in the part where the white keys are adjacent to each other (the gap between the E key and the F key, the gap between the B key and the C key) A problem has arisen that the appearance may be impaired by the irregularities.

In other words, a portion where white keys are lined up without a black key interposed therebetween is likely to be noticeable when irregularities due to mounting, manufacturing, and the like occur. Therefore, errors in this portion must be minimized as much as possible. I couldn't do that.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and a plurality of keyboard units provided with a plurality of structures as described above, that is, a plurality of different keys, respectively, are attached to respective mounting strips. The purpose of the present invention is to make it possible to easily and accurately position each keyboard unit in a keyboard device configured by overlapping portions (common mounting portions) so that gaps between adjacent white keys do not become uneven. And

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a plurality of keys different from each other, a common mounting portion for swingably supporting each of the plurality of keys, A keyboard provided with a plurality of keyboard units in which a fulcrum portion for connecting each key is integrally formed of resin, and a keyboard unit configured by overlapping a common mounting portion of the plurality of keyboard unit portions A keyboard device, wherein a positioning means for positioning the respective keyboard unit portions by fitting each other is provided in each of the common mounting portions of the plurality of keyboard unit portions. .

In this keyboard device, when a plurality of keyboard units are combined to form a keyboard unit of a predetermined key range, positioning means provided on each common mounting portion of the plurality of keyboard units is fitted. Thus, positioning between the keyboard units is performed. Therefore, the positioning of the respective keyboard units can be performed easily and accurately, so that the gaps between adjacent white keys can be prevented from being uneven.

The positioning means may comprise a pair of projections and holes provided on one and the other of the common mounting portions overlapping each other, and may be formed substantially at the center of the common mounting portion in the key arrangement direction. With this configuration, the positioning between the keyboard unit portions where the common mounting portions overlap each other can be performed by fitting a set of projections and holes, so that the positioning operation is easy, and the relative rotation after the fitting is performed. Even if there is a shift, if the fitting projection and the hole are located substantially at the center of the common mounting portion in the key arrangement direction, the shift can be small as compared with the case where it is located at another position. Furthermore, even if an error occurs during molding with resin, the error is minimized,
No positioning problems occur.

[0011] The plurality of keyboard units may be configured such that the plurality of keys are a black key unit that is a black key, a first white key unit that is a predetermined white key, and a key other than the predetermined white key. There are three units including a second white key unit which is a white key, and the positioning means is provided on a positioning means provided in a common mounting portion of any one of the three units, and the other two units are provided. It is preferable that the positioning means provided in the common mounting portion of the unit be fitted.

In this way, a keyboard unit having a predetermined key range (for example, one octave) can be easily constituted by a combination of three units, and the positioning between the three units can be performed with accuracy based on one unit. Because it is often done, it can be attached to the frame without shifting from each other.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the keyboard device according to the present invention will be described below in detail with reference to the drawings. FIG.
FIG. 1 is a principle diagram showing a schematic configuration of one embodiment of a keyboard device according to the present invention. The keyboard device shown in FIG. 1 includes two keyboard units 7 and 17 having the same configuration.

Each of the keyboard units 7 and 17 includes a first keyboard unit 9 and a second keyboard unit 11, respectively.
And fitting means 15. The first keyboard unit 9
Is a first plurality of keys 1 in a predetermined key range to be pressed,
A first common mounting portion 5 for swingably supporting the first plurality of keys 1 and a first fulcrum portion 3 for connecting the first common mounting portion 5 and the first plurality of keys 1 respectively. And these are integrally formed of resin.

The second keyboard unit 11 is a key belonging to the predetermined key range, and is a second key different from the first plurality of keys 1.
A plurality of keys 2, a second common mounting portion 6 for swingably supporting the second plurality of keys 2, and a connection between the second common mounting portion 6 and the second plurality of keys 2, respectively. And a second fulcrum portion 4, which are integrally formed of resin.

The fitting means 15 comprises a first common mounting portion 5 and a second
The first keyboard unit 9 and the second keyboard unit 11 are provided at an intermediate portion of the common mounting portion 6 except for the end in the key arrangement direction.
When the keyboard unit 7 or 17 of a predetermined key range is formed by combining the above, the positioning unit is used to position the keyboard unit portions 9 and 11 by fitting.

Further, the first keyboard unit portions 9 and 9 of the keyboard unit 7 and the keyboard unit 17 arranged side by side, respectively.
The unit connecting means 19 is provided at the connecting portion of the first common mounting portions 5 and 5.

In this keyboard device, when the first keyboard unit 9 and the second keyboard unit 11 are combined to form the keyboard unit 7 or 17 in a predetermined key range, the fitting means 15 is fitted. As a result, the first keyboard unit 9
And the second keyboard unit 11 are positioned. Thereby, the position of each first key 1 and second key 2 is determined.

Therefore, the keyboard units 9, 11 can be accurately positioned. That is, after the keyboard units 7 and 17 in a predetermined key range are formed, the keys 1 and 2 are not misaligned. Further, the first keyboard unit 9 and the second keyboard unit 11 can be attached to the frame of the keyboard device with an orderly key arrangement easily even by a non-expert. Further, since the first common mounting portion 5 and the second common mounting portion 6 are fitted by the fitting means 15, after the keyboard units 7, 17 in a predetermined key range are formed, the keyboard unit portions 9, 11 are shifted. Not even.

Next, a specific embodiment of the keyboard device according to the present invention will be described with reference to FIGS. FIG.
FIG. 3 is an exploded perspective view of an octave key. In this figure, reference numeral 21 denotes a black key unit, which includes five black keys, ie, a C key 23, a D key 24 (not shown in FIG. 2),
A key 25 (not shown in FIG. 2), a G key 26 (not shown in FIG. 2), and an A key 27 are integrally formed by resin molding.

Reference numeral 31 denotes a first white key unit composed of four white keys, and includes a C key 33, an E key 34 (not shown in FIG. 2), a G key 35 (not shown in FIG. 2), and a B key 36.
Are integrally resin-molded. That is, this first
The white key unit 31 is formed by integrally molding four keys every other one of seven white keys constituting one octave.

Reference numeral 41 denotes a second white key unit comprising three white keys, and is formed by integrally molding a D key 43, an F key 44 (not shown in FIG. 2), and an A key 45 with resin. That is, the second white key unit 41 is formed by integrally molding three keys out of every seven of the seven white keys constituting one octave. Therefore, the one-octave keyboard unit 60 is formed by combining the black key unit 21, the first white key unit 31, and the second white key 41, each of which constitutes a keyboard unit.

Here, these units 21, 31,
As shown in FIG. 7, each key 41 has a key body 50 having a predetermined length that is depressed when arranged and arranged as a keyboard, and a longitudinal rear end of the key body 50. And a fulcrum part 54 for connecting the key body 50 and the common mounting part 52 integrally with each other. These are integrally formed of resin.

The fulcrum (thin hinge) 54 is shown in FIG.
As shown in FIG. 7 and FIG. 7, the first hinge portion 5 has a thin horizontal plate piece 55 whose vertical cross section is H-shaped.
6 and a second hinge portion 58 having a vertical thin plate piece 57 whose horizontal cross section is H-shaped and thin.
0 between the rear end and the common mounting portion 52. Therefore, the fulcrum part 54 is vertically moved (vertical direction) by the first hinge part 56, and left and right direction (horizontal direction) by the second hinge part 58.
In addition, the key body 50 can be bent by a predetermined angle.

Each of the common mounting portions 52 of the units 21, 31, and 41 is formed of a plate having the same width.
It is formed so as to extend with a predetermined length in a direction orthogonal to zero. Then, the common mounting portion 52 of the second white key unit 41 is superimposed on the common mounting portion 52 of the first white key unit 31, and furthermore, the common mounting portion 52
The common mounting portion 52 of the black key unit 21 is superimposed on the white keys 33 to 36, 43 to 45 and 5.
A keyboard unit 60 of one octave (predetermined key range) is constituted by the black keys 23 to 27 (see FIGS. 4 and 5).

Here, a one-octave keyboard unit 60
, A first white key unit 31 and a second white key unit 41 provided with seven white keys 33 to 36 and 43 to 45
Are positioned by the first positioning means 61. The one-octave keyboard unit 60 and the one-octave keyboard unit on the lower or higher frequency side than this are positioned by the second positioning means 71 in a predetermined direction such as the key arrangement direction.

That is, as shown in FIG. 2, the first positioning means 61 has a hole 63 formed substantially at the center in the length direction (key arrangement direction) of the common mounting portion 52 of the first white key unit 31. And the common mounting portion 52 of the second white key unit 41
And a protrusion 65 which is formed at a substantially central portion in the length direction (key arrangement direction) so as to protrude downward so as to fit into the hole 63.

In other words, when the first white key unit 31 and the second white key unit 41 are combined to form the keyboard unit 60 of one octave, the first white key unit 31 and the second white key unit 41 are positioned. 1 positioning means 61
Are provided in the common mounting portions 52 at the positions of the E key 34 and the F key 44 of the white key units 31 and 41.

The upper surface of the common mounting portion 52 of the first white key unit 31 bulges upward in a rectangular shape, and the common mounting portion 52 of the second white key unit 41 also has a rectangular recess corresponding to this shape. Are formed. The rectangular bulge fits into the rectangular dent to determine the position of the common mounting portion 52 in the width direction.

The common mounting portion 52 of the black key unit 21
And a common mounting portion 52 of the second white key unit 41, a hole 81 having a similar configuration as a positioning means therebetween.
And a projection 83 are formed respectively. These holes 8
1 and the projection 83 are respectively located on the common mounting portion 52,
It is arranged at an intermediate portion in the length direction (key arrangement direction). The hole 81 is provided on the common mounting portion 52 at the position of the F key 44, and the projection 83 is provided on the common mounting portion 52 at the position of the F key 25. In addition, these common mounting portions 5
2 has the same configuration in that a recess having the same shape as the rectangular bulging portion is formed.

The one-octave keyboard unit 60 is configured as described above. However, when a keyboard spanning a plurality of octaves is configured, the keyboard unit 60 of each octave is used.
Positioning between them is required. The second positioning means 71 for performing this positioning is provided with holes 73 having the same configuration as the first positioning means 61 at both ends in the longitudinal direction (key arrangement direction) of the common mounting portion 52 of the first white key unit 31. The projections 75 to be fitted therein are respectively formed.

The second positioning means 71 is disposed at the end of the common mounting portion 52 of the keyboard unit 60 constituting one octave in the key arrangement direction. FIG. 3 shows the configuration of the second positioning means 71 in cross section.

The three units 21, 31, 41, which are resin molded products, have three long holes 84, 85, 86 formed at the same position in the longitudinal direction in the common mounting portion 52 at equal intervals. . As shown in FIG. 3, screws 90 are inserted into these long holes 84, 85, 86, and as a result, the unit assembly is mounted on a resin frame 91 as a whole.

Note that, as shown in FIG.
Is formed with an insertion hole 95 into which a horizontal projection 93 formed on the common mounting portion 52 of each key is fitted. In the keyboard device according to the above configuration, the one-octave keyboard unit 6
0 is assembled to the frame 91.

In this case, the first white key unit 31 is positioned from above and the second white key unit 41 is overlaid. The positioning at this time is performed by fitting the projection 65 into the hole 63 serving as the first positioning means 61 and fitting the bulging portion into the recess. As a result, the seven white keys 33 to 36,
43-45 are assembled in an array as shown in FIG.
A predetermined gap between the key 34 and the F key 44 (equal intervals in the longitudinal direction)
It is beautifully assembled with.

Next, the black key unit 21 is overlaid from above the second white key unit 41. Positioning of both units is performed by fitting the projection 83 into the hole 81 and fitting the bulging portion and the recess in the same manner as described above. After the assembly of the keyboard unit 60 of one octave is completed in this way, the whole is assembled to the frame 91 as shown in FIG. The screws 90 shown in FIG. 3 are then screwed on to secure them.

When a plurality of keyboard units 60 are arranged so as to form a plurality of octave keyboards on the frame 91, the positioning between adjacent low-pitched or high-pitched keyboard units 60 is performed in the second manner. This is performed by the positioning means 71.

That is, as shown in FIG. 3, a hole 7 formed in the common mounting portion 52 at the position of the B key 36 of the first white key unit 31 for the keyboard unit 60 of a certain octave.
3 shows a C key 33 of the first white key unit 31 with respect to a keyboard unit 60 constituting an octave higher than that.
Positioning is performed by fitting a projection 75 protruding from the lower surface of the common mounting portion 52 at the position shown in FIG.

As described above, a keyboard device having a plurality of octave keys 33 on the frame 91 can be assembled very easily. In this case, the positioning means 61, 71
Is located almost in the center in the key arrangement direction of the common mounting portion of each unit, which is the position where deviation and error are smallest in the resin molded product.
The error is small even in a portion where 3, 36 (34, 44) are adjacent to each other, and the appearance can be beautifully assembled.

Further, when each key of the keyboard device is pressed, the first hinge portion 56 of the fulcrum portion 54 is bent up and down when the key body portion 50 is pressed, and swings up and down with the common mounting portion 52 as a fulcrum as a whole. I do. When a switch attached to a predetermined portion of the frame 91 is turned on, a predetermined musical sound is generated.

The seven white keys constituting a one-octave keyboard are composed of a first white key unit integrally including an F key 44, an A key 45, a C key 33, and an E key 34, a G key 35, B key 3
6, the D key 43 may be divided into a second white key unit and a second white key unit.

In this case, when the first white key unit and the second white key unit are combined to form a one-octave keyboard unit, first positioning means for positioning these white key units. Are arranged at the common mounting portions 52 (substantially central portions in the key arrangement direction of the common mounting portions) at the positions of the A key 45 and the B key 36 of these keyboard units.

When a keyboard unit of one octave higher or lower than this one octave is arranged in parallel with this one octave keyboard unit, a second positioning means for positioning between the keyboard units of each octave is provided. Are arranged at the ends in the key arrangement direction of the common mounting portions of the keyboard units of each octave, that is, at the positions of the E key 34 and the F key 44.

Further, as the first and second positioning means, both the projections and the holes are used, and the common mounting portions are vertically overlapped. However, the positioning means between the common mounting portions is not limited to these. As far as possible, a positioning means having another structure can be adopted as an integrated resin product. For example, instead of the hole, a groove may be formed, and instead of the protrusion, a protrusion may be formed to be engaged with and fitted into the groove.

Further, a corrugated uneven portion may be formed at the end of the common mounting portion so that the common mounting portions are engaged with each other in the left-right direction without overlapping in the vertical direction. Further, as the positioning means, a positioning engaging portion of each unit may be formed along the longitudinal direction of the key body portion, for example, at the common mounting portion. Needless to say, the shape, size, and the like of the engaging portion for positioning can be appropriately formed.

Further, in this embodiment, 1 is used as the predetermined key range.
Although the octave key range has been described, this key range is not limited to one octave, but may be two octaves.
Alternatively, the entire keyboard may be used.

[0047]

As described above, according to the present invention, when a keyboard unit is formed, a plurality of keyboard unit portions can be accurately positioned. That is, after the keyboard unit of the predetermined key range is formed, the keys are not irregular. In addition, even a non-expert can easily attach a plurality of keyboard unit sections to a frame of a keyboard device in an orderly key arrangement. Further, since the common mounting portions of the plurality of keyboard units are fitted by the positioning means, the keyboard units in the predetermined key range are not shifted after the keyboard units are formed.

Further, if the positioning between the keyboard units where the common mounting portions overlap each other can be performed by fitting a set of projections and holes, the positioning work becomes easy, and the relative rotation after the fitting is performed. Even if there is a shift, if the fitting projection and the hole are located substantially at the center of the common mounting portion in the key arrangement direction, the shift can be small as compared with the case where it is located at another position. Furthermore, even if an error occurs during molding with the resin, the error is minimized, so that there is no positioning problem.

Further, the plurality of keyboard units are divided into a black key unit that is a black key, a first white key unit that is a predetermined white key, and a key other than the predetermined white key. There are three units including a second white key unit which is a white key, and positioning means provided on a common mounting portion of any one of the three units is provided with a common mounting portion of the other two units. If the positioning means provided on the keyboard are fitted together, a keyboard unit of a predetermined key range (for example, one octave) can be easily constituted by a combination of three units, and the three units can be positioned with respect to each other. Since it is performed with high accuracy based on one unit, it can be attached to the frame without shifting from each other.

[Brief description of the drawings]

FIG. 1 is a principle diagram showing a schematic configuration of one embodiment of a keyboard device according to the present invention.

FIG. 2 is an exploded perspective view showing a main part of a specific embodiment of the keyboard device according to the present invention.

FIG. 3 is a sectional view taken along the line III-III in FIG. 2;

FIG. 4 is a side view of a fulcrum portion and a vicinity of a common mounting portion in a state where a keyboard unit is formed by overlapping common mounting portions of the units of the embodiment shown in FIG. 2;

FIG. 5 is a plan view showing a state in which the keyboard unit is attached to a frame.

6 is an enlarged longitudinal sectional view showing the vicinity of a fulcrum portion and a common mounting portion of the second white key unit shown in FIG. 2;

FIG. 7 is a side view of the white key shown in FIG. 2;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... 1st several key, 2 ... 2nd several key, 3 ... 1st fulcrum part, 4 ... 2nd fulcrum part, 5 ... 1st common attachment part, 6 ... 2nd
Common mounting parts, 7, 17: keyboard unit, 9: first keyboard unit part, 11: second common mounting part, 15: fitting means (positioning means), 19: unit fitting means, 21: black key unit, 23 ... C key, 24 ... D key, 25 ... F key,
26 G key, 27 A key, 31 first white key unit, 33 C key, 34 E key, 35 G key, 36 B
Key, 41 ... second white key unit, 43 ... D key, 44 ... F
Key, 45: A key, 50: Key body, 52: Common mounting part,
54 ... fulcrum part, 55 ... horizontal thin plate piece, 56 ... first hinge part, 57 ... vertical thin plate piece, 58 ... second hinge part, 60 ... 1
Octave keyboard unit, 61 ... first positioning means, 63, 81 ... holes, 65, 83 ... projections, 71 ... second positioning means, 73 ... holes, 75 ... projections, 84, 85, 8
6 ... long hole, 90 ... screw, 91 ... frame, 93 ... horizontal protrusion, 95 ... insertion hole

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[Procedure amendment]

[Submission date] May 30, 2000 (2005.3
0)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Detailed description of the invention

[Correction method] Change

[Correction contents]

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a keyboard device such as an electronic musical instrument, and more particularly, to a keyboard unit having a plurality of mutually different keys swingably supported by a common mounting portion via fulcrum portions. The present invention relates to a keyboard device provided with a keyboard unit configured by overlapping common mounting portions.

[0002]

2. Description of the Related Art As a conventional keyboard apparatus of this type, for example, a keyboard apparatus described in Japanese Patent Publication No. 57-3080 is known. This keyboard device divides a one-octave keyboard into three structures, one structure consisting of five black keys and two structures formed by combing white keys every other. It is.

[0003] That is, the white key structure, which is a plastic molded product, has a comb-shaped first unit composed of four keys of a C key, an E key, a G key, and a B key, and a D key, an F key, and an A key. And a comb-shaped second unit consisting of three keys.
In each of these three structures, a key (key) portion, a mounting strip portion, and a hinge connecting portion for connecting them are integrally formed of plastic.

Therefore, in such a keyboard device,
The mounting strips of the structure consisting of a black key, the structure consisting of four white keys, and the structure consisting of three white keys are overlapped and screwed to a frame for assembly.

[0005]

However, in such a conventional keyboard device for an electronic musical instrument, in the case of a one-octave keyboard, the positioning of the two divided white key structures when they are superimposed is performed. There is no means, and therefore, the assembling work requires skill, and each key, especially in the part where the white keys are adjacent to each other (the gap between the E key and the F key, the gap between the B key and the C key) A problem has arisen that the appearance may be impaired by the irregularities.

In other words, a portion where white keys are lined up without a black key interposed therebetween is likely to be noticeable when irregularities due to mounting, manufacturing, and the like occur. Therefore, errors in this portion must be minimized as much as possible. I couldn't do that.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and a plurality of keyboard units provided with a plurality of structures as described above, that is, a plurality of different keys, respectively, are attached to respective mounting strips. The purpose of the present invention is to make it possible to easily and accurately position each keyboard unit in a keyboard device configured by overlapping portions (common mounting portions) so that gaps between adjacent white keys do not become uneven. And When operating the black key,
To prevent rubbing with the white key
Aim.

[0008]

According to the present invention, a keyboard device having a keyboard unit is provided as follows.
Be configured as follows.

The keyboard unit includes a black key unit and a white key
Unit and a fitting means.
A plurality of black keys in a predetermined key range to be pressed and
A first common mounting portion for swingably supporting the first common mounting portion;
An attachment portion and a first fulcrum portion connecting each of the black keys,
The key unit includes a plurality of white keys belonging to the predetermined key area,
A second common mounting portion for swingably supporting each of the white keys;
Of the second common mounting portion and the second fulcrum portion connecting each white key
Including.

[0010] Further, the fitting means may include the first common mounting.
Irregularities provided on the attachment portion and the second common attachment portion,
The unevenness is provided on the first common mounting portion on the second common mounting portion.
With the white key unit and black key unit.
When forming a keyboard unit with a predetermined key range,
Key direction in each key unit and key longitudinal direction.
The first common mounting portion and
The second common mounting portions are fitted to each other.

In such a keyboard device, the predetermined
The key range can be a one-octave key range.

[0012] According to this configuration, the common attachment portions are provided.
Key arrangement between the black key unit and the white key unit where
Direction and key longitudinal direction in two directions, the first and second
It can be done by fitting the unevenness provided in the common mounting part
Therefore, the positioning operation is easy. In addition, black key unit
Of the common mounting part of the white key unit
The fulcrum of the black key higher than the fulcrum of the white key.
It is possible to suppress the back and forth movement and inclination at the time of cropping. That
When the black key is operated, the tip and the side
Contact can be prevented.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the keyboard device according to the present invention will be described below in detail with reference to the drawings. FIG.
FIG. 1 is a principle diagram showing a schematic configuration of one embodiment of a keyboard device according to the present invention. The keyboard device shown in FIG. 1 includes two keyboard units 7 and 17 having the same configuration.

Each of the keyboard units 7 and 17 includes a first keyboard unit 9 and a second keyboard unit 11, respectively.
And fitting means 15. The first keyboard unit 9
Is a first plurality of keys 1 in a predetermined key range to be pressed,
A first common mounting portion 5 for swingably supporting the first plurality of keys 1 and a first fulcrum portion 3 for connecting the first common mounting portion 5 and the first plurality of keys 1 respectively. And these are integrally formed of resin.

The second keyboard unit 11 is a key belonging to the predetermined key range, and is a second key different from the first plurality of keys 1.
A plurality of keys 2, a second common mounting portion 6 for swingably supporting the second plurality of keys 2, and a connection between the second common mounting portion 6 and the second plurality of keys 2, respectively. And a second fulcrum portion 4, which are integrally formed of resin.

The fitting means 15 comprises a first common mounting portion 5 and a second
The first keyboard unit 9 and the second keyboard unit 11 are provided at an intermediate portion of the common mounting portion 6 except for the end in the key arrangement direction.
When the keyboard unit 7 or 17 of a predetermined key range is formed by combining the above, the positioning unit is used to position the keyboard unit portions 9 and 11 by fitting.

Further, the first keyboard unit portions 9 and 9 of the keyboard unit 7 and the keyboard unit 17 arranged side by side, respectively.
The unit connecting means 19 is provided at the connecting portion of the first common mounting portions 5 and 5.

In this keyboard device, when the first keyboard unit 9 and the second keyboard unit 11 are combined to form the keyboard unit 7 or 17 in a predetermined key range, the fitting means 15 is fitted. As a result, the first keyboard unit 9
And the second keyboard unit 11 are positioned. Thereby, the position of each first key 1 and second key 2 is determined.

Therefore, the keyboard units 9, 11 can be accurately positioned. That is, after the keyboard units 7 and 17 in a predetermined key range are formed, the keys 1 and 2 are not misaligned. Further, the first keyboard unit 9 and the second keyboard unit 11 can be attached to the frame of the keyboard device with an orderly key arrangement easily even by a non-expert. Further, since the first common mounting portion 5 and the second common mounting portion 6 are fitted by the fitting means 15, after the keyboard units 7, 17 in a predetermined key range are formed, the keyboard unit portions 9, 11 are shifted. Not even.

Next, a specific embodiment of the keyboard device according to the present invention will be described with reference to FIGS. FIG.
FIG. 3 is an exploded perspective view of an octave key. In this figure, reference numeral 21 denotes a black key unit, which includes five black keys, ie, a C key 23, a D key 24 (not shown in FIG. 2),
A key 25 (not shown in FIG. 2), a G key 26 (not shown in FIG. 2), and an A key 27 are integrally formed by resin molding.

Reference numeral 31 denotes a first white key unit composed of four white keys, and includes a C key 33, an E key 34 (not shown in FIG. 2), a G key 35 (not shown in FIG. 2), and a B key 36.
Are integrally resin-molded. That is, this first
The white key unit 31 is formed by integrally molding four keys every other one of seven white keys constituting one octave.

Reference numeral 41 denotes a second white key unit comprising three white keys, and is formed by integrally molding a D key 43, an F key 44 (not shown in FIG. 2), and an A key 45 with resin. That is, the second white key unit 41 is formed by integrally molding three keys out of every seven of the seven white keys constituting one octave. Therefore, the one-octave keyboard unit 60 is formed by combining the black key unit 21, the first white key unit 31, and the second white key 41, each of which constitutes a keyboard unit.

Here, these units 21, 31,
As shown in FIG. 7, each key 41 has a key body 50 having a predetermined length that is depressed when arranged and arranged as a keyboard, and a longitudinal rear end of the key body 50. And a fulcrum part 54 for connecting the key body 50 and the common mounting part 52 integrally with each other. These are integrally formed of resin.

The fulcrum (thin hinge) 54 is shown in FIG.
As shown in FIG. 7 and FIG. 7, the first hinge portion 5 has a thin horizontal plate piece 55 whose vertical cross section is H-shaped.
6 and a second hinge portion 58 having a vertical thin plate piece 57 whose horizontal cross section is H-shaped and thin.
0 between the rear end and the common mounting portion 52. Therefore, the fulcrum part 54 is vertically moved (vertical direction) by the first hinge part 56, and left and right direction (horizontal direction) by the second hinge part 58.
In addition, the key body 50 can be bent by a predetermined angle.

Each of the common mounting portions 52 of the units 21, 31, and 41 is formed of a plate having the same width.
It is formed so as to extend with a predetermined length in a direction orthogonal to zero. Then, the common mounting portion 52 of the second white key unit 41 is superimposed on the common mounting portion 52 of the first white key unit 31, and furthermore, the common mounting portion 52
The common mounting portion 52 of the black key unit 21 is superimposed on the white keys 33 to 36, 43 to 45 and 5.
A keyboard unit 60 of one octave (predetermined key range) is constituted by the black keys 23 to 27 (see FIGS. 4 and 5).

Here, a one-octave keyboard unit 60
, A first white key unit 31 and a second white key unit 41 provided with seven white keys 33 to 36 and 43 to 45
Are positioned by the first positioning means 61. The one-octave keyboard unit 60 and the one-octave keyboard unit on the lower or higher frequency side than this are positioned by the second positioning means 71 in a predetermined direction such as the key arrangement direction.

That is, as shown in FIG. 2, the first positioning means 61 has a hole 63 formed substantially at the center in the length direction (key arrangement direction) of the common mounting portion 52 of the first white key unit 31. And the common mounting portion 52 of the second white key unit 41
And a protrusion 65 which is formed at a substantially central portion in the length direction (key arrangement direction) so as to protrude downward so as to fit into the hole 63.

In other words, when the first white key unit 31 and the second white key unit 41 are combined to form the keyboard unit 60 of one octave, the first white key unit 31 and the second white key unit 41 are positioned. 1 positioning means 61
Are provided in the common mounting portions 52 at the positions of the E key 34 and the F key 44 of the white key units 31 and 41.

The upper surface of the common mounting portion 52 of the first white key unit 31 bulges upward in a rectangular shape, and the common mounting portion 52 of the second white key unit 41 also has a rectangular recess corresponding to this shape. Are formed. The rectangular bulge fits into the rectangular dent to determine the position of the common mounting portion 52 in the width direction.

The common mounting portion 52 of the black key unit 21
And a common mounting portion 52 of the second white key unit 41, a hole 81 having a similar configuration as a positioning means therebetween.
And a projection 83 are formed respectively. These holes 8
1 and the projection 83 are respectively located on the common mounting portion 52,
It is arranged at an intermediate portion in the length direction (key arrangement direction). The hole 81 is provided on the common mounting portion 52 at the position of the F key 44, and the projection 83 is provided on the common mounting portion 52 at the position of the F key 25. In addition, these common mounting portions 5
2 has the same configuration in that a recess having the same shape as the rectangular bulging portion is formed.

The one-octave keyboard unit 60 is configured as described above. However, when a keyboard spanning a plurality of octaves is configured, the keyboard unit 60 of each octave is used.
Positioning between them is required. The second positioning means 71 for performing this positioning is provided with holes 73 having the same configuration as the first positioning means 61 at both ends in the longitudinal direction (key arrangement direction) of the common mounting portion 52 of the first white key unit 31. The projections 75 to be fitted therein are respectively formed.

The second positioning means 71 is disposed at the end of the common mounting portion 52 of the keyboard unit 60 constituting one octave in the key arrangement direction. FIG. 3 shows the configuration of the second positioning means 71 in cross section.

The three units 21, 31, 41, which are resin molded products, have three long holes 84, 85, 86 formed at the same position in the longitudinal direction in the common mounting portion 52 at equal intervals. . As shown in FIG. 3, screws 90 are inserted into these long holes 84, 85, 86, and as a result, the unit assembly is mounted on a resin frame 91 as a whole.

Note that, as shown in FIG.
Is formed with an insertion hole 95 into which a horizontal projection 93 formed on the common mounting portion 52 of each key is fitted. In the keyboard device according to the above configuration, the one-octave keyboard unit 6
0 is assembled to the frame 91.

In this case, the first white key unit 31 is positioned from above and the second white key unit 41 is overlaid. The positioning at this time is performed by fitting the projection 65 into the hole 63 serving as the first positioning means 61 and fitting the bulging portion into the recess. As a result, the seven white keys 33 to 36,
43-45 are assembled in an array as shown in FIG.
A predetermined gap between the key 34 and the F key 44 (equal intervals in the longitudinal direction)
It is beautifully assembled with.

Next, the black key unit 21 is overlaid from above the second white key unit 41. Positioning of both units is performed by fitting the projection 83 into the hole 81 and fitting the bulging portion and the recess in the same manner as described above. Thus, the first and second white key units 31 and 41 and the black key
Unit 21 in two directions, the key arrangement direction and the key longitudinal direction.
There is positioned on each other, after assembly is complete the keyboard unit 60 of an octave, assembling the entire frame 91 as shown in FIG. Screw 90 shown in FIG.
Are then screwed in to secure them.

When a plurality of keyboard units 60 are arranged so as to form a plurality of octave keyboards on the frame 91, the positioning between adjacent low-pitched or high-pitched keyboard units 60 is performed in the second manner. This is performed by the positioning means 71.

That is, as shown in FIG. 3, a hole 7 formed in the common mounting portion 52 at the position of the B key 36 of the first white key unit 31 for the keyboard unit 60 of a certain octave.
3 shows a C key 33 of the first white key unit 31 with respect to a keyboard unit 60 constituting an octave higher than that.
Positioning is performed by fitting a projection 75 protruding from the lower surface of the common mounting portion 52 at the position shown in FIG.

As described above, a keyboard device having a plurality of octave keys 33 on the frame 91 can be assembled very easily. In this case, the positioning means 61, 71
Is located almost in the center in the key arrangement direction of the common mounting portion of each unit, which is the position where deviation and error are smallest in the resin molded product.
The error is small even in a portion where 3, 36 (34, 44) are adjacent to each other, and the appearance can be beautifully assembled.

Further, when each key of the keyboard device is pressed, the first hinge portion 56 of the fulcrum portion 54 is bent up and down when the key body portion 50 is pressed, and swings up and down with the common mounting portion 52 as a fulcrum as a whole. I do. When a switch attached to a predetermined portion of the frame 91 is turned on, a predetermined musical sound is generated.

The seven white keys constituting a one-octave keyboard are composed of a first white key unit integrally including an F key 44, an A key 45, a C key 33, and an E key 34, a G key 35, B key 3
6, the D key 43 may be divided into a second white key unit and a second white key unit.

In this case, when the first white key unit and the second white key unit are combined to form a one-octave keyboard unit, first positioning means for positioning these white key units. Are arranged at the common mounting portions 52 (substantially central portions in the key arrangement direction of the common mounting portions) at the positions of the A key 45 and the B key 36 of these keyboard units.

When a keyboard unit of one octave higher or lower than this one octave is arranged in parallel with this one octave keyboard unit, a second positioning means for positioning between the keyboard units of each octave is provided. Are arranged at the ends in the key arrangement direction of the common mounting portions of the keyboard units of each octave, that is, at the positions of the E key 34 and the F key 44.

Further, as the first and second positioning means, both the projections and the holes are used, and the common mounting portions are vertically overlapped. However, the positioning means between the common mounting parts is not limited to these.
In addition, positioning means having another structure can be adopted.
For example, instead of the hole, a groove may be formed, and instead of the protrusion, a protrusion may be formed to be engaged with and fitted into the groove.

Further, a corrugated uneven portion may be formed at the end of the common mounting portion so that the common mounting portions are engaged with each other in the left-right direction without overlapping in the vertical direction. Further, as the positioning means, a positioning engaging portion of each unit may be formed along the longitudinal direction of the key body portion, for example, at the common mounting portion. Needless to say, the shape, size, and the like of the engaging portion for positioning can be appropriately formed.

Further, in this embodiment, 1 is used as the predetermined key range.
Although the octave key range has been described, this key range is not limited to one octave, but may be two octaves.
Alternatively, the entire keyboard may be used.

[0047]

As described above, according to the present invention, when a keyboard unit is formed, a plurality of black key units are formed.
And the white key unit can be accurately positioned. That is, after forming a keyboard unit of a predetermined key range,
Eliminates key irregularities. In addition, even a non-expert can easily attach the black key unit and the white key unit to the frame of the keyboard device in an orderly key arrangement. Further, since the common attachment portions of the black key unit and the white key unit it is thus fitted to the fitting means by irregularities, after the formation of the keyboard unit in a predetermined key area, the black key unit and white keys
Unit does not deviate in the key longitudinal direction in the key arrangement direction to each other.

Further, the common mounting portion of the black key unit is
Since it is superimposed on the common mounting part of the knit, the black key
Fulcrum can be higher than the fulcrum of the white key,
To reduce the forward / backward movement and sideward tilt when operating a black key.
And the above-mentioned positioning is ensured.
Of the black key, the tip of the black key
Rubbing between the side and the side of the adjacent white key
Disappears.

Claims (2)

[Claims] 1. A keyboard device comprising a keyboard unit, the keyboard unit having a black key unit, a white key unit, and a fitting means, wherein the black key unit has a predetermined key range to be pressed. A plurality of black keys, a first common mounting portion for swingably supporting each of the black keys, and a first fulcrum portion connecting the first common mounting portion to each of the black keys. The key unit includes a plurality of white keys belonging to the predetermined key range, a second common mounting portion for swingably supporting each of the white keys, and connecting the second common mounting portion to each of the white keys. Second
And a fulcrum portion, wherein the fitting means is unevenness provided on the first common mounting portion and the second common mounting portion, and the unevenness is provided on the second common mounting portion by the first common mounting portion. When forming a keyboard unit of a predetermined key range by the white key unit and the black key unit by overlapping the common mounting portion, positioning is performed in two directions of a key arrangement direction and a key longitudinal direction of each of these key units. A keyboard device wherein the first common mounting portion and the second common mounting portion are fitted to each other. 2. The keyboard device according to claim 1, wherein the predetermined key range is one octave.