JPH01170990A - Keyboard device for electronic musical instrument - Google Patents

Abstract

PURPOSE:To facilitate the assembling operation and to eliminate nonuniformity between adjacent natural keys and prevent the beauty from being spoiled by arranging positioning means between 1st and 2nd keyboard units at intermediate parts except end parts in the key array direction at respective common fitting part of the keyboard units when a natural key keyboard is formed by combining the 1st and 2nd keyboard units. CONSTITUTION:When the 1st keyboard unit 10 and 2nd keyboard unit 20 are combined to form the natural key keyboard 100, those keyboard units 10 and 20 are positioned by positioning means 15 and 25. Those positioning means 15 and 25 are arranged at the intermediate parts except the end parts in the key array direction at the common fitting parts 103 and 203 of the keyboard units 10 and 20. Consequently, the assembling operation is facilitated and the nonuniformity between adjacent natural keys is eliminated to prevent the beauty from being spoiled.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is made by integrally molding a plurality of keys, each common mounting part that is a fulcrum of their swing, and each fulcrum part that connects them with a resin, so as to control a predetermined key area. Regarding a keyboard device used in an electronic organ, etc., in which white keys are adjacent to each other, one of the white keys is connected to the common mounting part for only a plurality of keys. A first keyboard unit and a second keyboard unit including one or more white keys juxtaposed in series with the other keyboard unit constitute a white keyboard keyboard of one octave or more, and these first keyboard units When the white keyboard is formed by sheathing the keyboard unit and the second keyboard unit, positioning means for positioning these keyboard units is provided at each common mounting portion of these keyboard units according to the key arrangement. By arranging it in the middle part excluding the end of the direction, it facilitates the assembly work and
This eliminates irregularities in the white keys and improves its aesthetic appearance.

[Prior Art] As a conventional keyboard device for an electronic musical instrument of this type, one described, for example, in Japanese Patent Publication No. 57-3080 is known.

This keyboard device divides a one-octave keyboard into three structures: one structure consisting of four black keys, and two structures consisting of every other white key shaped like a comb. It is something.

In other words, the structure of the white key, which is a plastic molded product, is
A comb-shaped first unit consists of four keys: C key, E key, G key, and white key, and a comb-shaped second unit consists of three keys, Dfi, F key, and A&l. It is divided.

In each of these three structures, a gI (key) part, a mounting strip part, and a hinge connection part that swingably connects these parts are integrally molded from plastic. . -With different kinds of materials, and-
A plurality of keys can be manufactured at the same time in one molding process, and the work can be done easily and at low cost. In addition, the molding die is easy to manufacture.

In such a keyboard device, the mounting strip parts of the structure consisting of black keys, the structure consisting of 4 white keys, and the structure consisting of 3 white keys are overlapped and attached to the frame. It was assembled with screws.

[Problems to be Solved by the Invention] However, in the keyboard device of such a conventional electronic musical instrument, when the white key structures divided into two parts are superimposed on each other in a one-octave keyboard, Moreover, there is no means for positioning between each keyboard when a plurality of keyboards of one octave are combined to form a keyboard of a predetermined scale, which poses the problem that assembly work requires skill. It was happening.

In addition, especially in areas where white keys are adjacent to each other (the gap between the E key and the F key, the gap between the white key and the C key), there has been a problem in that the unevenness can impair the aesthetic appearance. . In other words, in the area where white keys are lined up without a black key intervening, any irregularities due to installation, manufacturing, etc. will be noticeable, so errors in this area must be kept as small as possible. I couldn't do it.

SUMMARY OF THE INVENTION Therefore, the present invention provides a white keyboard consisting of a first keyboard unit and a second keyboard unit, which facilitates the assembly work and improves the aesthetic appearance by eliminating irregularities between adjacent white keys. Its purpose is to prevent damage.

[Means for Solving the Problems] The present invention provides a plurality of keys that are operated by pressing, a common attachment part that swingably supports these guards, and a fulcrum that connects the guards and the common attachment part. In a keyboard device for an electronic musical instrument in which these parts are integrally molded from resin, when two white keys are adjacent to each other, one of the white keys is attached to the common mounting part. A white keyboard of one octave or more is formed by a first keyboard unit having only a plurality of keys arranged in series, and a second keyboard unit including one or more white keys arranged in series and juxtaposed with the other keyboard unit. When the first keyboard unit and the second keyboard unit are combined to form the white keyboard, a positioning means for positioning these keyboard units is attached to each common attachment of these keyboard units. The present invention provides a keyboard device for an electronic musical instrument, which is disposed in the middle portion of the keyboard excluding the ends in the key arrangement direction.

[Function] In the keyboard device for an electronic musical instrument according to the present invention, a plurality of keys to be pressed and operated, a common mounting portion that swingably supports the guard, and a fulcrum that connects the guard and the common mounting portion are provided. The parts and parts are integrally molded from resin. Therefore, each security guard is supposed to swing around its common mounting portion as a fulcrum.

In the keyboard device of this electronic musical instrument, when the white keys of one octave or more are adjacent to each other, one of the white keys is attached to the common mounting. The second keyboard unit includes a first keyboard unit in which only a plurality of keys are arranged in series, and a second keyboard unit including one or more white keys arranged in series with the other keyboard unit.

When the white keyboard is formed by combining the first keyboard unit and the second keyboard unit, positioning between these keyboard units is performed by a positioning means. This positioning means is disposed in the middle portion of each common mounting portion of these keyboard units, excluding the ends in the key arrangement direction.

In this way, each keyboard unit is integrally molded with resin,
Since the positioning means is arranged in the middle part of the common mounting part in the key arrangement direction, even if an error occurs during molding with resin, the error will be the smallest in the positioning part, No positioning problems occur.

Furthermore, even if a keyboard with one octave of white keys is configured, for example, the small error will be placed where the white keys are adjacent to each other without any intervening keys, so the error will be noticeable. The keys can be arranged without compromising the aesthetic appearance of the keyboard.

[Example code] Embodiments of the present invention will be described below with reference to the drawings.

1(a), (b), (c) to FIG. 5 show an embodiment of a keyboard device for an electronic musical instrument according to the present invention.

In these figures, 1 is a lower case, and this lower case 1 is a box body that opens upward. The rear part of the top opening of lower case 1 is upper case 3 (display panel).
The keyboard 5 is covered from above by a keyboard 5, and the keyboard 5 is exposed at the front of the opening on the top surface.

The keyboard 5 is formed by a plurality of keys 7 supported on a frame 9.

That is, for example, one octave key 7 is composed of five black keys and seven white keys, but these 12 keys 7 are divided into three keys as shown in FIG. It is divided into units 10.20.3o and molded.

That is, as shown in FIG. 1(a), a first keyboard unit 10 consisting of two white keys is formed by integrally molding the white keys with resin.

Further, as shown in FIG. 1(b), the second keyboard unit 20 consisting of five white keys includes Cf1ll, white key, white key,
The G key and A key are integrally molded from resin.

Furthermore, as shown in FIG. 1(C), the black key unit 30 consisting of five black keys includes a C# key, a D# key, an F# key, a G# key, and an A# key, all of which are integrated with resin. It is molded into.

In other words, seven white keys (C key,
White key, white key, white key, G key, A key, white key) composed of white & 3! The keyboard 100 is assembled by the first keyboard unit 10 and the second keyboard unit 20.

As shown in FIGS. 1(a), (b), and (c), each unit 10, 20, and 30 is connected to the key body 101, 201, and 301 extending in a certain direction. It has a common attachment part 103, 203, 303 extending in a direction perpendicular to the longitudinal direction of the. Each of the key bodies 101.201.301 and their common attachment portion 103.203.303 are connected to each other by a thin plate hinge-like fulcrum portion 105.205.305.

Therefore, the alarm bell 7 has its key body 101.201.301
When pressed, the fulcrum part 105.205.3
05 is bent downward, so that it is swingably provided in the vertical direction using the respective common attachment portions 103, 203, and 303 as fulcrums.

That is, in the alarm bell 7, its fulcrum portion 105.205.
Reference numeral 305 is capable of bending (elastically deforming) in the vertical direction within a predetermined angular range.

Here, in order to assemble each keyboard unit 10, 20, 30, the respective common attachment parts 103, 203, 303 are stacked vertically on top of each other. As a result, the black key unit 30 is disposed on the one-octave white keyboard 100, forming a one-octave keyboard.

Each of these keyboard units 10, 20, 30 is provided with first and second positioning means 15, 25 for positioning therebetween.

The first positioning means 15 are connected to these units 10.2
0,300, the common mounting part 103 is arranged at the first keyboard unit 10 disposed at the lowest position, and the second keyboard unit 20 on which the common mounting part 203 is superimposed. There is. That is, in the band-shaped common attachment part 103 of the first keyboard unit 10, a small hole 15A is formed at a longitudinally intermediate position (near the base of the E key). On the other hand, the middle part in the longitudinal direction of the common mounting part 203 of the second keyboard unit 20 (the F key is attached near the root)
On the bottom surface thereof, there is a hole (fittable) corresponding to the hole 15A mentioned above.
A small protrusion 15B is formed to protrude downward.

Therefore, these protrusions 15B and holes 15A determine the position of the common mounting portions 103 and 203 in the front-rear, left-right, and up-down directions.

The second positioning means 25 is for positioning between the second keyboard unit 20 and the black key unit 30.

That is, this positioning means 25 is constructed in the same manner as the first positioning means 15, and the hole 2i5A is located in the common attachment part 203 which is the rear end (base end) of the F key. Each of the common mounting portions 303 is formed with a small protrusion 25B that projects downward.

In addition, as shown in FIGS. 2 to 4, each keyboard unit 1
0.20.30 each common mounting part 103.203.303
is a box-shaped convex part 107.207.307 that is convex toward the top.
These convex portions 107.207
．． 307 is firmly integrated by fitting together. In FIGS. 2 and 3, reference numeral 90 indicates a locking wall that stands up on the rear end side of the frame 9, and this locking wall 90 has a rectangular hole 91 formed at a predetermined position.

In addition, small horizontally projecting protrusions 109,209,309 are formed on the rear end side of each common attachment part 103,203,303, and these protrusions 109,209,
．． 309 is inserted into the rectangular hole 91. These protrusions 109, 209, 309 and rectangular holes 91 as a whole are used for temporary positioning when assembling the keyboard 5 as an assembly of each unit 10, 220, 30 and the frame 9. It constitutes a temporary sheathing means 50 for carrying out.

Further, when each keyboard unit 10, 20, 30 is assembled in this manner to form a one-octave keyboard 5, the one-octave keyboard 5 on the treble side or the bass side is assembled on the frame 9 adjacently.

In this case, protrusions 40 are formed to protrude at predetermined positions on the lower surface of both ends in the longitudinal direction of the common attachment portion 103, and holes 44 into which the protrusions 40 are fitted are located adjacent to each other correspondingly. The common attachment portion 103 is formed at the end portion in the longitudinal direction. These protrusions 40 and holes 4
Reference numeral 4 denotes positioning means for positioning the unit keyboards 5 of each octave. And, as shown in Figure 3,
Each keyboard 5 is collinearly fixed to a boss of the lower case 1 together with a frame 9 by screws 60.

In addition, in FIG. 2, the key body 101.201.301
Actuator parts 110, 210, and 310 projecting downward are formed in the longitudinally intermediate portion of the frame 9, and a printed circuit board 70 and a switch 72 are fixed to the frame 9. Both have well-known configurations.

Further, 112.212.312 is a stopper and guide for regulating the vertical movement of the key 7, and the key body 101.201.3
01 and is loosely inserted into a fitting groove 95 formed in the frame 9.

In the keyboard device for an electronic musical instrument according to the above configuration, the first
After the keyboard units 10, 20, and 30 shown in the figure are positioned by the positioning means 15, 25 and 40, 44, respectively, and are overlapped and integrated, the keyboard units 10, 20, and 30 shown in the figure are assembled into a frame 9 as shown in FIGS. 2 and 5. It is fixed and further attached to the upper and lower cases 1.3.

In this case, the first keyboard unit 10 and the second keyboard unit 20 are easily positioned between them by the first positioning means 15. The white keyboard keyboard 100 is assembled. Similarly, when the black key unit 30 is superimposed on the second keyboard unit 20, the second positioning means 25 positions the units 20, 300.

The keyboard 5 assembled in this way has a frame 9
At this time, the common attachment part 103.2
A predetermined temporary assembly means 50 is provided on the rear end side of 03.303, and temporary positioning is performed by this means. That is, as shown in FIG. 2, the locking horizontal protrusions 109, 209, and 309 of the keyboard assembly are inserted into the locking holes 91 of the locking wall 90 that stands up at the rear end of the frame 9. This is used for positioning.

After this, the frame 9 is fixed using screws 60 or the like as fixing means.
It is also fixed to the lower case 1.

As a result, the keyboard device as a whole is extremely easy to assemble.

In addition, after assembly, the security 7 is attached to the common mounting part 103.203.3.
03 serves as a fulcrum and a thin plate-shaped hinge part 105.20
5.305 bends in the vertical direction, causing it to swing.

FIGS. 6(a), 6(b), and 6(c) show other embodiments of the keyboard device for an electronic musical instrument according to the present invention.

As shown in this figure, the first keyboard unit 401 has CII and F keys, and the second keyboard unit 40
2 has Dgl, E key, GW, Afi, and Bff. Furthermore, the black key unit 403 is formed by five black keys.

The other configurations are similar to those of the above embodiment. Further, its operation is also the same as that of the above embodiment, so it is omitted.

Note that the present invention can naturally be applied not only to white keys of one octave, but also to white keyboards composed of a plurality of keys of one and a half octaves, two octaves, or more. In some cases, the present invention can be applied to any configuration by dividing adjacent white keys into two keyboard units and arranging positioning means between these units.

[Effects] As explained above, according to the present invention, in the white keyboard consisting of the first keyboard unit and the second keyboard unit, the assembly work is facilitated, and the adjacent white keys It is possible to eliminate irregularities between the two so that the aesthetic appearance is not impaired.

[Brief explanation of the drawing]

1(a), (b), and (c) are plan views showing exploded units of a keyboard device for an electronic musical instrument according to an embodiment of the present invention, and FIG. 2 is a plan view showing an exploded view of each unit of a keyboard device for an electronic musical instrument according to an embodiment of the present invention. Figure 3 is a partially cutaway view showing the fixed parts of each unit according to one embodiment; Figure 4 is a common attachment according to one embodiment. FIG. 5 is an exploded plan view showing how the keyboard unit according to the embodiment is attached to the frame, and FIGS. 6(a) and 6(b).
(c) is an exploded plan view showing each unit of a keyboard device for an electronic musical instrument according to another embodiment of the present invention. 5...... Keyboard, 7... Key, 10... First keyboard unit, 15...
......First positioning means, 20...
...Second keyboard unit, 100...
...White key keyboard, 101...Key body, 103...Common mounting part, 105...
......Fully point, 201...Key body, 203...Common mounting part, 205...
...Fulcrum part. Patent applicant Yamaha Corporation agent
Patent Attorney Kiyoshi Kuwai - Fig. 3 Partially cutaway view of one embodiment Fig. 4 Side view of the common attachment part of one embodiment Plan view of another embodiment

Claims (1)

[Claims] (1) It has a plurality of keys that are operated by pressing, a common mounting part that swingably supports each of these keys, and a fulcrum part that connects each of the keys and the common mounting part, and these are made of resin. In a keyboard device for an electronic musical instrument integrally molded with, in a case where two white keys are adjacent to each other, one of the white keys is connected to a first one in which only a plurality of keys are connected in series at the common mounting part. and a second keyboard unit consisting of one or more white keys arranged in series and juxtaposed with the other keyboard unit, which constitutes a white keyboard keyboard of one octave or more, and these first keyboard units When the white keyboard is formed by combining the unit and the second keyboard unit, positioning means for positioning these keyboard units is installed at the end of each common mounting part of these keyboard units in the key arrangement direction. A keyboard device for an electronic musical instrument, characterized in that the keyboard device is arranged in the middle part excluding the keyboard.