JP2780709B2 - Keyboard device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a keyboard unit in which keys in a predetermined area of a keyboard are connected to each other by common mounting portions thereof, and a plurality of keyboard units are arranged side by side. With regard to a keyboard device which constitutes a keyboard, the end of the common mounting portion of these keyboard units is overlapped and this portion is fixed to the frame with a single screw, thereby facilitating the assembly work of the keyboard. At the same time, the aesthetic appearance has been improved by eliminating irregular keys. 2. Description of the Related Art As a conventional keyboard device of this type, for example, a keyboard device described in Japanese Patent Publication No. 57-3080 is known. This keyboard device divides a key of one octave into three structures, one structure composed of five black keys and two structures formed by forming every other white key in a comb shape. Things. That is, the structure of the white key, which is a plastic molded product, has a comb-shaped first unit composed of four keys of C key, E key, G key, and B key, and D key, F key, and A key.
It is divided into 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, a structure consisting of black keys, a structure consisting of four white keys,
Each mounting strip portion of the structure consisting of three white keys was overlapped and screwed to a frame (boss) for assembly. That is, when attaching the keyboard unit having three structures to the frame, screw holes were provided near both ends of the mounting strips of the keyboard unit which were superimposed, and screws were screwed into the holes. However, in such a conventional keyboard device for an electronic musical instrument, each keyboard unit (one octave) is independently fixed to a frame with a screw. Disadvantages have occurred. That is, if the positional relationship of the screw holes between the respective keyboard units is poor, a shift in the front-rear direction occurs between adjacent keyboard units, resulting in poor appearance. In addition, in the vicinity of both ends of each keyboard unit, the interval between adjacent screw holes becomes narrow. For this reason, it is necessary to secure sufficient strength to fix each screw in the frame, and in some cases, it is necessary to reinforce this portion. SUMMARY OF THE INVENTION Therefore, when the keyboard units are arranged side by side and assembled to a frame, the present invention does not cause a shift between the respective keyboard units, particularly in the front-rear direction, and does not cause an irregular key arrangement. To provide a keyboard device that facilitates
That is the purpose. It is another object of the present invention to provide a keyboard device that does not require special reinforcement on the frame side to which the keyboard unit is fixed. According to the first aspect of the present invention, as shown in FIG. 1, a support member (91) and a first keyboard attached to the support member (91). Unit (17), a second keyboard unit (7) attached to the support member (91) in a state of being juxtaposed with the first keyboard unit (17), and a first keyboard unit (17) ) And an attachment member (90) for fixing the second keyboard unit (7) to the support member (91), wherein the first keyboard unit (17) is provided.
Are a plurality of keys (1, 1) of a first predetermined key range to be pressed.
2), a first common mounting portion (5, 6) for swingably supporting a plurality of keys (1, 2) in a first predetermined key range,
A second support unit (3, 4) for connecting the common mounting portion (5, 6) and the plurality of keys (1, 2) in the first predetermined key range; 7) is a plurality of keys (1A, 2A) in a second predetermined key area adjacent to the first predetermined key area.
A second common mounting portion (5A, 6A) for swingably supporting a plurality of keys (1A, 2A) in a second predetermined key range; a second common mounting portion (5A, 6A); A second fulcrum (3A, 2A) connecting the plurality of keys (1A, 2A) in
4A), and the end of the first common mounting portion (5, 6)
The ends of the adjacent second common mounting portions (5A, 6A) can be overlapped with each other, and holes (84, 86) are provided at these ends to be overlapped, respectively, and the first common mounting portions overlapped with each other. The ends of the part (5, 6) and the second common mounting part (5A, 6A) are connected to a single attaching member (9).
0) is a keyboard device fixed to the support member (91) by inserting it into the holes (84, 86). According to a second aspect of the present invention, the first keyboard unit (17) has a first keyboard unit section (9) and a second keyboard unit section (11), and the first keyboard unit section. (9) is a first key (1) belonging to a first predetermined key range
A first common mounting member (5) for swingably supporting the first key (1); and a first fulcrum member connecting the first common mounting member (5) and the first key (1). And (3) are integrally formed of resin. The second keyboard unit (11) is a key belonging to a first predetermined key range and different from the first key (1). Key (2) and a second common mounting member (6) for swingably supporting the second key (2).
And a second fulcrum member (4) for connecting the second common mounting member (6) and the second key (2), which are integrally formed of resin, and the first common mounting member (5). 2) The keyboard device according to claim 1, wherein the keyboard device is superimposed on the second common mounting member. According to a third aspect of the present invention, the second keyboard unit (7) has a third keyboard unit (9A) and a fourth keyboard unit (11A), and the third keyboard unit is provided. (9A) is a third key (1) belonging to a second predetermined key range.
A), a third common mounting member (5A) that swingably supports the third key (1A), and a third common member (5A) that connects the third common mounting member (5A) and the third key (1A). And a fulcrum member (3A), which are integrally formed of resin. The fourth keyboard unit (11A) is a key belonging to a second predetermined key range, and is a third key (1A). And a fourth key (2
A), a fourth common mounting member (6A) for swingably supporting the fourth key (2A), and a fourth common connecting member (6A) for connecting the fourth key (2A) to the fourth common mounting member (6A). The keyboard device according to claim 1, further comprising a fulcrum member (4A), which are integrally formed of resin, and wherein the third common mounting member (5A) is superimposed on the fourth common mounting member (6A). . In the keyboard device according to the present invention, the first keyboard unit (17) and the second keyboard unit (7) are arranged side by side on the support member (91) of the keyboard device. At the time of installation, the first common mounting portions (5, 6) of the first keyboard unit (17)
Is overlapped with the end of the second common mounting portion (5A, 6A) of the adjacent second keyboard unit (7). Then, the holes (8
4, 86), the first keyboard unit (17) and the second keyboard unit (7) are fixed to the support member (91) side by side by inserting a single attaching member (90). Is done. For this reason, when assembling the keyboard units (17, 7) in parallel to the frame, there is no deviation between the keyboard units (17, 7) even if the user is not an expert. The key (1, 2) or (1A, 2A) can be easily assembled without any irregularity in the front-rear direction. Further, since the two keyboard units (17, 7) can be fixed to the support member (91) with one attachment member (90), when a plurality of keyboard units are fixed, each of the attachment members has to be fixed. The intervals can be equal. An embodiment of a keyboard device according to the present invention will be described below with reference to the drawings. 2 to 6 show an embodiment of a keyboard device according to the present invention. FIG. 2 is an exploded perspective view of a one-octave key. In FIG. 1, reference numeral 21 denotes a black key unit, which includes five black keys, namely, a C # key 23, a D # key 24 (not shown in FIG. 2), and an F # key 25 (also not shown in FIG. 2). ), G # key 26 (not shown in FIG. 2), and A # key 27 are integrally formed of resin. 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. It is made of resin. That is, the first white key unit 31 is obtained by integrally molding four keys out of every seven white keys constituting one octave.
41 is a second white key unit consisting of three white keys,
D key 43, F key 44 (not shown in FIG. 2),
The A key 45 is integrally molded with resin. That is,
The second white key unit 41 is formed by integrally molding three keys every other one of seven white keys constituting one octave. Therefore, the one-octave keyboard 60 is
The black key unit 21, the first white key unit 31,
By combining with the second white key unit 41,
Will be composed. Here, each of these units 21, 31,
Each key 41 has a key body 50, a common mounting part 52, and a fulcrum 54. The key body 50 is pressed when it is configured and arranged as a keyboard, and is a plate having a predetermined length. The common mounting portion 52 is a plate-shaped member that is disposed on the rear end side of the key body 50 in the longitudinal direction, and that supports the key body 50 so that it can swing up and down. Further, the fulcrum portion 54 connects the key body 50 and the common attachment portion 52 integrally. Further, the key body 50, the common mounting part 52, and the fulcrum part 54 are integrally formed of resin. As shown in FIGS. 4 and 6, the fulcrum portion (thin hinge portion) 54 connects the first hinge portion 56 and the second hinge portion 58 to the rear end of the key body 50 and the common mounting portion 52. Have between. The first hinge portion 56 has a thin plate-like horizontal thin plate piece 55 whose vertical cross section is H-shaped. The second hinge portion 58 has a thin vertical plate piece 57 whose horizontal cross section is H-shaped. Therefore, the fulcrum portion 54 is vertically moved (vertical direction) by the first hinge portion 56, and left-right direction (horizontal direction) by the second hinge portion 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 a plate having the same width, and is formed so as to have a predetermined length in a direction perpendicular to the key body 50. I have. Then, the common mounting portion 52 of the first white key unit 31
The common mounting portion 52 of the second white key unit 41 is superposed on the common key mounting portion 52, and the common mounting portion 52 of the black key unit 21 is further superimposed on the common mounting portion 52. As a result, these seven white keys 33... And five black keys 23.
・ ・ And the keyboard 60 of one octave (predetermined key range)
(See FIG. 5). Here, in the seven white keys 33... Constituting the one-octave keyboard 60, the first white key unit 31 and the second white key unit 41 are connected to the first positioning means 61. It is positioned by. The 1-octave keyboard 60 and the 1-octave keyboard 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 and a projection 65 formed so as to be inserted into the hole 63. This hole 63
Is formed at a substantially central portion in the length direction (key arrangement direction) of the common mounting portion 52 of the first white key unit 31. The protrusion 65 is formed at a substantially central portion in the length direction (key arrangement direction) of the common mounting portion 52 of the second white key unit 41 so as to protrude downward so as to be fitted into the hole 63. ing. In other words, when the first white key unit 31 and the second white key unit 41 are combined to form the one-octave keyboard 60, the first positioning means for positioning these white key units 31, 41 is provided. Reference numeral 61 is provided in each of the common attachment portions 52 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 has a rectangular shape corresponding to this shape. A depression is formed. The rectangular bulging portion is engaged with the rectangular recess to determine the position of the common mounting portion 52 in the width direction. That is, the positions in the two directions of the length direction (key arrangement direction) of the common attachment portion 52 and the width direction (key longitudinal direction) of the common attachment portion 52 are determined. Therefore, the first white key unit 31 and the second white key unit 41
Positioning can be performed accurately. 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 the same configuration as a positioning means therebetween.
And a projection 83 are formed respectively. The holes 81 and the projections 83 are respectively provided in the unit common mounting portion 52 and are provided at intermediate portions in the length direction (key arrangement direction). The hole 81 is provided on the common mounting portion 52 of the F key 44, and the projection 83 is provided on the common mounting portion 52 of the F # key 25. Further, these common attachment portions 52 are similarly configured in that a recess having the same shape as the rectangular bulging portion is formed. The one-octave keyboard 60 is configured as described above. However, when a keyboard is formed over a plurality of octaves, positioning between the octave keyboards 60 is required. Second positioning means 71 for performing this positioning
Are formed at both ends in the longitudinal direction (key arrangement direction) of the common mounting portion 52 of the first white key unit 31 with a hole 73 having the same configuration as the first positioning means 61 and a projection 75 inserted into the hole 73. , Respectively, are formed. The second positioning means 71 is arranged at the end of the common mounting portion 52 of the keyboard 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 and 41, which are resin molded products, have three long holes 84, 85 and 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 attached to a resin frame (support member) 91 as a whole. Screw 9
Reference numeral 0 denotes an attachment member for fixing the first keyboard unit 17 and the second keyboard unit 7 in FIG. 1 to the frame 91 (support member). FIG.
As shown in FIG.
An insertion hole 95 into which the horizontal projection 93 formed in the hole is inserted is formed. In the keyboard device having the above configuration, 1
After assembling the octave keyboard 60, a plurality of octave keyboards are assembled to the frame 91. In this case, the first white key unit 31 is positioned from above and the second white key unit 31 is positioned.
The white key unit 41 is superimposed. At this time, the projection 65 is inserted into the hole 63 serving as the first positioning means 61.
And the expanded portion is inserted into the dent. As a result, the seven white keys 33 are arranged and assembled as shown in FIG. 5, and the E key 34 and the F key 44 are beautifully assembled with a predetermined gap (equal intervals in the longitudinal direction). Can be Next, the black key unit 21 is replaced with the white key unit 41.
From above. Positioning is similarly performed by inserting the projection 83 into the hole 81 and inserting the bulging portion and the recess. After the assembly of the one-octave keyboard 60 is completed in this way, as shown in FIG. 5, a plurality of keyboards 60 are assembled to the frame 91 to constitute an eight-octave keyboard device as a whole. Screw 9
After the keyboard 60 is assembled for each octave, 0 is inserted into the elongated hole and screwed into the frame 91 to fix them. When a plurality of octave keyboards are formed and arranged on the frame 91, the positioning between adjacent low-tone or high-tone keys 60 is performed by the second positioning means 71. That is, the B key 3 of the first keyboard unit 31 for the keyboard 60 of a certain octave
The protrusion 75 protruding from the lower surface of the common mounting portion 52 of the sixth keyboard unit is formed in a hole 73 formed in the common mounting portion 52 of the C key 33 of the first keyboard unit 31 constituting an octave higher than that.
Positioning is performed by insertion. 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, 7
Reference numeral 1 denotes a resin molded product, which is disposed substantially at the center in the key arrangement direction of the unit common mounting portion having the smallest deviation and error. For this reason, even after assembly, the white keys 33, 36
The error is small even in the part where (34, 44) are adjacent to each other, and the appearance can be beautifully assembled. When each key of the keyboard device is pressed, the first hinge portion 56 of the fulcrum portion 54 is bent vertically when the key body portion 52 is depressed, and is swung up and down about the common attachment 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 the 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, and a second white key unit in which the D key 43 is integrated. In this case, when the first white key unit and the second white key unit are combined to form a one-octave keyboard, the first positioning means for positioning between these white key units is used. The white key unit is disposed at a common mounting portion of the A key 45 and the B key 36 (substantially at the center of the common mounting portion in the key arrangement direction).
When one octave keyboard, which is higher or lower than this octave key, is arranged in parallel with the octave keyboard, the second positioning means for positioning between the octave keys is provided by the key of the common mounting portion of each octave key. It is arranged at the end in the arrangement direction, that is, between the E key 34 and the F key 44. Further, as the first and second positioning means, both projections and 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 used, and instead of the protrusion, a protrusion that engages with or engages with the groove may be formed. In addition, for example, a corrugated uneven portion may be formed at an end of the common attachment portion so that the common attachment 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 in the common mounting portion along the longitudinal direction of the key body. It goes without saying that the shape, size, etc. of the engaging portion for positioning can be appropriately formed. Further, in this embodiment, the key range of one octave has been described as the predetermined key range. However, this key range is not limited to one octave, but may be two octaves. Any range, such as a key to a C key, or the entire keyboard may be used. According to the present invention, when assembling the keyboard units (17, 7) side by side in a frame,
Even if the user is not a skilled person, it is easy to assemble the keys (1, 2) and the keys (1A, 2A) without deviation between the keyboard units (17, 7). In particular, since there is no need to worry about the positional relationship of the attachment member (90), there is no shift in the key longitudinal direction between adjacent keyboard units.
In addition, it is not necessary to apply a special reinforcement to a part of the support member (91) when fixing with the attachment member (90).

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a principle diagram showing an overall configuration of a keyboard device according to the present invention. FIG. 2 is an exploded perspective view of a main part of the keyboard device according to the embodiment of the present invention. FIG. 3 is a sectional view taken along the line III-III in FIG. 2; FIG. 4 is a side view showing a common mounting portion according to one embodiment of the present invention. FIG. 5 is a plan view showing a state in which the keyboard device according to the embodiment of the present invention is mounted on a frame. FIG. 6 (A) is a longitudinal sectional view of a key common attaching portion according to an embodiment of the present invention. (B) is a side view of the white key. [Description of Signs] 1, 2, 1A, 2A, 50 Key body (key), 5, 6, 5A, 6A, 52 Common mounting part, 3, 4, 3A, 4A, 54 Support point, 7, 17, 60 keyboards, 9 first keyboard units, 11 second keyboard units, 61 first positioning means, 71 second positioning means, 33 C keys, 34 E keys, 35 G keys, 36 B keys, 43 D keys , 44 F key, 45 A key, 84,86 long hole, 90 screw (attachment member), 91 frame (support member).

Claims (1)

(57) [Claims] The support member (91), the first keyboard unit (17) attached to the support member (91), and the support member (9) arranged side by side with respect to the first keyboard unit (17).
A second keyboard unit (7) attached to 1), and an attaching member for fixing the first keyboard unit (17) and the second keyboard unit (7) to the support member (91); (90), wherein the first keyboard unit (17) includes a plurality of keys (1, 2) of a first predetermined key range to be pressed and a first predetermined key range. A first common mounting portion (5, 6) for swingably supporting a plurality of keys (1, 2) in a key range; the first common mounting portion (5, 6); and the first predetermined key range. A first fulcrum portion (3, 4) connecting the plurality of keys (1, 2), and the second keyboard unit (7) is provided with a second key unit adjacent to a first predetermined key range. A plurality of keys (1A, 2A) in a predetermined key range, a second common mounting portion (5A, 6A) for swingably supporting a plurality of keys (1A, 2A) in a second predetermined key range, The second common attachment portions (5A, 6A) and a second plurality of keys (1A, 2A) of the predetermined key area and a second fulcrum portion connecting (3A, 4A)
And an end of the first common attachment portion (5, 6) is overlapped with an end of the adjacent second common attachment portion (5A, 6A). Holes (84, 86) are provided, respectively, and the end portions of the first common mounting portion (5, 6) and the second common mounting portion (5A, 6A) that are superimposed are formed by a single mounting member (90). ) Is inserted into the holes (84, 86) to fix the keyboard device to the support member (91). 2. The first keyboard unit (17) has a first keyboard unit (9) and a second keyboard unit (11), and the first keyboard unit (9) has a first predetermined key range. , A first common mounting member (5) that swingably supports the first key (1), a first common mounting member (5), and a first key (1). ) And a first fulcrum member (3) that is integrally formed of resin. The second keyboard unit (11) is a key belonging to a first predetermined key range, and A second key (2) different from the first key (1)
A second common mounting member (6) that swingably supports the second key (2); and a second fulcrum member that connects the second common mounting member (6) and the second key (2). The keyboard device according to claim 1, wherein (4) and (4) are integrally formed of resin, and the first common mounting member (5) is superimposed on the second common mounting member (6). 3. The second keyboard unit (7) has a third keyboard unit (9A) and a fourth keyboard unit (11A), and the third keyboard unit (9A) has a second predetermined key range. , A third common mounting member (5A) that swingably supports the third key (1A), a third common mounting member (5A), and a third key (1A). ) And a third fulcrum member (3A) that is integrally formed of resin. The fourth keyboard unit (11A) is a key belonging to a second predetermined key range, A fourth key (2A) different from the third key (1A), a fourth common mounting member (6A) for swingably supporting the fourth key (2A), and a fourth common mounting member (6A)
Fulcrum member (4A) connecting the second key and the fourth key (2A)
And these are integrally formed of resin. The third common mounting member (5A) is a fourth common mounting member (6A).
The keyboard device according to claim 1, wherein the keyboard device is superposed on the keyboard device.