JP3189821B2 - Keyboard device - Google Patents

Description

Description: 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 mutually different keys swingable to a common mounting portion via fulcrum portions. The present invention relates to a keyboard device provided with a keyboard unit that is configured by supporting a plurality of keyboard units integrally formed of resin and overlapping a common mounting portion. 2. Description of the Related Art As a conventional keyboard device of this kind, for example, one disclosed 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 two white key structures are superimposed on each other. There is no positioning means in this case, so that the skill is required for the assembling work, and the keys, especially the white keys, are located in adjacent portions (the gap between the E key and the F key, the gap between the B key and the C key). In other words, there has been a problem that the appearance may be impaired due to 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 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 the plurality of keys, and a common mounting portion. And a fulcrum connecting the keys to each other, a plurality of keyboard units integrally formed of resin, and a keyboard unit configured by overlapping a common mounting portion of the plurality of keyboard units. A keyboard device comprising: a plurality of keyboard units each having a common mounting portion provided with positioning means for positioning the respective keyboard unit portions by fitting each other;
Are provided on one and the other of the common mounting parts that overlap each other.
The key arrangement of the common mounting part consists of a set of projections and holes
It is formed almost at the center in the direction . 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. Further , 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, so that the positioning operation is easy,
Even if the shift in relative rotation after the fitting, the projection and hole for the fitting is in the substantially central portion of the key arrangement direction of the common mounting portion, its displacement as compared with the case in the other position Small enough. Then , even if an error occurs during molding with the resin, the error is minimized, so that positioning problems do not 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. 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. 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, since the positioning of the keyboard unit portions where the common mounting portions overlap each other can be performed by fitting a set of projections and holes, the positioning operation is facilitated, and the relative rotation after the fitting is prevented. Even if there is, the fitting and the hole to be fitted are almost at the center of the common mounting part in the key arrangement direction .
Therefore, the deviation can be smaller than that in the case of being at another position. Then , even if an error occurs during molding with the resin, the error is minimized, so that there is no problem in positioning. 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. The second unit is a white key unit, and three units are provided. Positioning means provided at a common mounting unit of any one of the three units is provided with a common mounting unit of the other two units. If the positioning means provided in each unit are fitted, a keyboard unit having 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 relative 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 the vicinity of a fulcrum and a common mounting portion in a state where a keyboard unit is formed by superposing 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. FIG. 6 is an enlarged longitudinal sectional view showing the vicinity of a fulcrum portion and a common attachment 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; DESCRIPTION OF SYMBOLS 1... First plurality of keys, 2... 2nd plurality of keys, 3... 1 fulcrum, 4... 2 fulcrum, 5.
Common mounting portions, 7, 17: keyboard unit, 9: first keyboard unit portion, 11: second common mounting portion, 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

Claims (1)

(57) [Claims] 1. Different keys and different keys
A common mounting portion for swingably supporting the common mounting portion and the common mounting portion;
The fulcrum that connects each key to each other is
Provide multiple keyboard units that are molded into the body,
The common mounting parts of the keyboard units
A keyboard device comprising a keyboard unit to be formed, The common mounting portions of the plurality of keyboard units are provided with
By fitting each other, the position between the keyboard units
Equipped with positioning means to perform positioninge, Each of the positioning means is overlapped with the common mounting
Consists of a set of protrusions and holes provided on one and the other of the part,
Formed at substantially the center of the common mounting portion in the key arrangement direction.
Is A keyboard device characterized in that: 2.Different keys and different keys
A common mounting portion for swingably supporting the common mounting portion and the common mounting portion;
The fulcrum that connects each key to each other is
Provide multiple keyboard units that are molded into the body,
The common mounting parts of the keyboard units
A keyboard device comprising a keyboard unit to be formed, The common mounting portions of the plurality of keyboard units are provided with
By fitting each other, the position between the keyboard units
Equipped with positioning means for performing positioning, The plurality of keyboard units are configured such that the plurality of keys are black keys.
Black key unit and a plurality of keys, wherein the plurality of keys are predetermined white keys.
One white key unit and the plurality of keys are equal to or less than the predetermined white key.
A second white key unit that is an outer white key, The positioning means may be any one of the three units.
Position provided on the common mounting portion of any one of the units
To the common mounting part of the other two units.
Make sure that the positioning means provided
Characterize Keyboard device. 3.The respective positioning means may be overlapped with each other by the common
It consists of a set of protrusions and holes provided on one and the other of the mounting part.
The common mounting portion is formed substantially at the center in the key arrangement direction.
Claim 2Keyboard device according to 4.