JPH10207461A - Electronic keyboard instrument - Google Patents

Abstract

(57) [Summary] [Problem] An electronic keyboard instrument that can be easily assembled and can improve the positional accuracy of a keyboard and members arranged around the keyboard. To provide an electronic keyboard instrument capable of reducing the size of an electronic keyboard. SOLUTION: A keyboard chassis 10 is fixed to a timepiece 13 fixed to a side plate. The time signature 13 is a member arranged adjacent to the left and right sides of the keyboard 8. When the keyboard chassis 10 is directly attached to the time signature 13, the gap between the time signature 13 and the keyboard 8 can be easily optimized.
In addition, the upper surface of the keyboard 8 and the upper surface of the timepiece 13 are accurately aligned in the same plane. Further, a storage space having a predetermined height is formed below the keyboard chassis 10 and on the upper surface side of the main body chassis 3. In this storage space, a circuit board 16 on which various electric components and the like necessary for the electronic keyboard instrument 1 are provided is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an electronic keyboard instrument.

[0002]

2. Description of the Related Art In general, an electronic keyboard musical instrument generally includes a keyboard assembly having a plurality of keys and a switch for detecting the movement of the keys (hereinafter, also simply referred to as a key) mounted on a keyboard chassis, and an outer casing. And a case assembly formed by assembling a plurality of members, and a keyboard assembly is fixed to the case assembly.

[0003] Of these, the case assembly usually has a structure in which an upper structure is assembled on a main body chassis serving as a base, and a keyboard assembly is also suitable for supporting its weight. Therefore, the case assembly is mounted on the main body chassis of the case assembly, and is fixed while being supported from below.

[0004]

However, the above-mentioned conventional electronic keyboard instrument has the following problems. First, as described above, when the upper structure and the keyboard assembly of the case assembly are fixed to the main body chassis of the case assembly, the mounting accuracy of each case assembly to the main body chassis falls within the allowable error range. Even if
Regarding the positional relationship between the upper structure of the case assembly and the keyboard assembly, mounting errors of the respective case assemblies with respect to the main body chassis are accumulated and the positional accuracy is deteriorated. Therefore, in an electronic keyboard musical instrument having such a structure, for example, a key provided on the keyboard assembly side and a beater board which is a member of the case assembly side and located at both ends in the key arrangement direction and adjacent to the side surface of the key. May be different between the left end side and the right end side in the key arrangement direction, and there is a problem that the appearance deteriorates and the product looks poor. Of course, if the assembling work is performed with great care, the above-described variation can be suppressed to some extent, but since fine adjustment is required, the assembling efficiency is deteriorated and the productivity is reduced. There was a problem.

In the keyboard assembly, keys are arranged on the upper surface side, while the lower surface side is arranged adjacent to the main body chassis of the case assembly. Could not be arranged.
For this reason, other devices required for the electronic keyboard instrument must be arranged on the side of the keyboard assembly, and this has been a factor of increasing the space required for installing this type of electronic keyboard instrument.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has as its object the first object of the present invention is to provide an easy-to-assemble and position of a keyboard and members arranged around the keyboard. An object of the present invention is to provide an electronic keyboard instrument capable of improving accuracy. Second, it is an object of the present invention to provide an electronic keyboard instrument that can reduce the space required for installation as compared with the related art.

[0007]

Means for Solving the Problems and Effects of the Invention In order to achieve the first object, according to the first aspect of the present invention, there is provided a keyboard assembly having a key or the like mounted on a keyboard chassis, and an exterior. And a case assembly formed by assembling a plurality of members, wherein the keyboard assembly is configured such that the keyboard assembly is fixed to the case assembly. Among the constituent members, in the assembled state of the electronic keyboard musical instrument, the member is fixed to a member forming a portion adjacent to either the side surface on both ends in the arrangement direction of the keys or the upper surface on the rear end side of the keys. It is characterized by the following.

According to the electronic keyboard instrument constructed as described above, the key provided on the keyboard assembly is adjacent to either the side surface on both ends in the key arrangement direction or the upper surface on the rear end side of the key. Since the positional relationship with the members that form the portion that is formed is directly determined without intervening a large number of members between the two, there is no variation due to the accumulation of allowable errors in the gap between the two.

More specifically, if the keyboard assembly is fixed to a member constituting a portion adjacent to the side surface on both ends in the key arrangement direction, the relationship between the member and the key can be easily determined. Since the positioning is performed with high accuracy, the intervals between the side surfaces on both ends in the arrangement direction of the keys and the case assembly side do not vary on both sides. Further, if the keyboard assembly is fixed to a member constituting a portion adjacent to the upper surface on the rear end side of the key, the relationship between the member and the key can be easily and accurately positioned. Therefore, the distance between the upper surface on the rear end side of the key and the case assembly side does not become too large or too small. Incidentally, it is more desirable that the keyboard assembly be fixed to both the members forming the side surfaces on both ends in the key arrangement direction and the members forming the upper surface on the rear end side of the keys. May be adopted.

In such a structure, of the members constituting the case assembly, those not arranged adjacent to the key are connected in such a manner that some members are interposed between the keyboard assembly and the key assembly. Therefore, the positional relationship between these members and the keyboard assembly is not always guaranteed. However, most parts of the keyboard assembly other than the periphery of the key are not exposed to the outside of the musical instrument even if they are adjacent to the case assembly. Since the user does not look as closely as around the key, even if there is some variation, there is no problem.

In the electronic keyboard musical instrument of the present invention, members on the case assembly side to which the keyboard assembly is fixed are as follows:
If a part of the key is arranged around the key, the desired effect can be obtained.However, when a key is provided at a position adjacent to the side face on both ends in the key arrangement direction, this key is used. If the gap between the key and the key varies, the appearance is particularly poor. Therefore, when such a timepiece is provided, as described in claim 2, the key assembly is a timepiece arranged on both side surfaces of the key arrangement direction both ends in the assembled state of the electronic keyboard instrument. It is good to be fixed to.

With such a configuration, the gap between the key and the splint does not vary, and the appearance around the keyboard becomes extremely good. In addition, the positional relationship between the key and the clapboard is of course not only the distance between the two, but also the relationship between the height positions of the upper surfaces of the two is extremely important, and if this height position is uneven on the left and right, the texture is extremely poor. There's a problem. In this regard, it is particularly preferable that the keyboard assembly is fixed to the lower surface of the clap, as in the keyboard instrument of the third aspect.

With such an electronic keyboard instrument, the positional relationship between the keyboard assembly and the timepiece in the height direction can be reliably determined without making fine adjustments. Will not be uneven. Next, in order to achieve the above-mentioned second object, the invention according to claim 4 is directed to a case in which a keyboard assembly in which a key or the like is mounted on a keyboard chassis and a plurality of members as an exterior are assembled. An electronic keyboard musical instrument comprising an assembly and the keyboard assembly fixed to the case assembly, wherein the keyboard assembly is a member of the case assembly,
In the assembled state of the electronic keyboard instrument, the electronic keyboard instrument is fixed to a member supporting the keyboard assembly at a position forming a storage space below the keyboard assembly inside the case assembly.

According to the electronic keyboard instrument constructed as described above, unlike the conventional keyboard instrument, the keyboard assembly is not adjacent to the upper surface of the bottom of the case assembly, and the storage space is formed below the keyboard assembly. It is also possible to arrange other devices necessary for the electronic keyboard instrument. Therefore, the space required for installing the electronic keyboard instrument can be reduced, and it is extremely useful in a model where further miniaturization is desired.

More specifically, if a circuit board on which various electric components and the like are provided is housed in a housing space formed below the keyboard assembly, for example, as described in claim 5, this kind of structure can be achieved. The circuit board necessarily provided in the electronic keyboard instrument can be compactly stored inside. In addition to the components described in the fifth aspect, it is also possible to store components other than members constituting the electronic keyboard instrument itself, such as a storage space for a musical score.

In the case of adopting the structure described in claim 4 or 5, the member for fixing the keyboard assembly forms a storage space below the keyboard assembly inside the case assembly in the assembled state. Any member that supports the keyboard assembly at the position may be used, but if the keyboard assembly is fixed with respect to the beaten tree as in claim 2, a storage space is formed below the keyboard assembly. At the same time, the positional relationship with the beat tree is also good, which is particularly preferable.

[0017]

Next, an embodiment of the present invention will be described with reference to an example. As shown in FIG. 1, an electronic keyboard instrument 1 according to an embodiment includes a main body chassis 3, an upper case 4, and a case formed of exterior parts such as side plates 5, 6, and a key for one octave is provided on the front side thereof. Is provided with a keyboard 8 in which the keys are arranged.

Among them, the main body chassis 3 is shown in FIG.
As shown in FIG. 1A, a bottom horizontal portion 3a constituting a bottom surface of the electronic keyboard instrument 1 and a front end of the bottom horizontal portion 3a serve as a base for mounting each component constituting the electronic keyboard instrument 1. 3b and the like, which extends upward from the lower end, and has angle-shaped metal fittings (not shown) at both left and right ends.
Are welded, and the metal fittings are fixed to the side plates 5 and 6 with screws (not shown). Further, on the lower surface of the main body chassis 3, legs 9 and the like are also arranged.

As shown in FIG. 2A, the upper case 4 has a rear portion 4a extending upward from the vicinity of the rear end side of the main body chassis 3 while slightly bending as shown in the figure, and forward from the upper end of the rear portion 4a. An upper horizontal portion 4b extending horizontally, and a front inclined portion 4 extending obliquely downward and forward from the front end of the upper horizontal portion 4b.
As in the case of the main body chassis 3, angled metal fittings (not shown) are welded to the left and right ends thereof, and the metal fittings are fixed to the side plates 5 and 6 with screws (not shown). The lower end of the rear portion 4a is fixed to the main body chassis 3 with screws (not shown).

As shown in FIG. 2A, the keyboard 8 is fixed to a keyboard chassis 10 at a mounting end 8a by screws (not shown), and is operably supported while bending the leaf spring portion 8b. I have. A stopper portion 8c is projected from the lower surface of the keyboard 8, and the stopper portion 8c is attached to a keyboard stopper felt 11 on a keyboard chassis 10.
, The downward movement of the keyboard 8 is restricted. On the keyboard chassis 10, a key switch 12 that is turned on / off in accordance with the pressed state of the keyboard 8 is provided. In addition, on the keyboard chassis 10, in addition to the above, a guide member for guiding each key so that the keyboard 8 moves up and down at an appropriate position without shifting in the left-right direction;
A signal line extending from the key switch, various screws, and the like are also provided, but these are not shown.

The keyboard chassis 10 includes a side plate 5,
It is arranged so as to bridge between the six pieces, and is fixed to the timepiece 13 using several screws 14 as shown in FIG. The beat 13 is, as shown in FIG.
Are placed adjacent to the left and right sides of the
6 is fixed by screws (not shown). Beat 1
3 is a keyboard chassis 1 as shown in FIG.
0, and with the keyboard chassis 10 fixed to the lower end of the clap 13, the upper face of the keyboard 8 and the upper face of the clap 13 are aligned in the same plane. The height dimension has been adjusted.

As described above, the keyboard chassis 10 is
Keyboard 8 and beat 13
The positional relationship between the two does not cause a positional shift due to the accumulation of mounting errors, as compared with the relative positional relationship determined via other members, and easily equalizes the gap between the beater 13 and the keyboard 8 on the left and right. be able to. In addition, the upper surface of the keyboard 8 and the time signature 1
The upper surfaces of 3 are aligned exactly in the same plane.

By adjusting the position at which the clap 13 is attached to the side plates 5 and 6, a storage space of a predetermined height is formed below the keyboard chassis 10 and on the upper surface side of the main body chassis 3. In this storage space, a circuit board 16 on which various electric components and the like necessary for the electronic keyboard instrument 1 are provided is provided. When the circuit board 16 is housed in this manner, the space required for installing the electronic keyboard instrument 1 can be reduced as compared with a case where the circuit board 16 is arranged side by side on the keyboard chassis 10 or the like.

The electronic keyboard instrument 1 is manufactured mainly for the elderly, and even a person who has not mastered the playing technique of a general keyboard instrument can enjoy playing with a very simple operation. It is configured as follows. More specifically, as shown in FIG. 1, a flexible disk device 20 used for reading data of a tune to be played is mounted on the side plate 5, and a performance is performed based on the tune data read from this. The music to be played can be selected using the music selection switch 22 provided on the front inclined portion 4c of the upper case 4, and the number of the music to be played is displayed on the display 23. Further, using the tone color selection switch 24, any one of "piano", "organ", and "taisho koto" can be selected as the tone color of the music to be played.

As the playing method, there are a "model mode" in which the electronic keyboard instrument 1 performs a completely automatic performance and a "play mode" in which the performance is performed in accordance with the operation of the keyboard 8, and these are set by the performance mode selection switch 27. Selected alternatively. Incidentally, the "performance mode" is a mode in which a performance based on music data is performed in accordance with the pressed state of any key of the keyboard 8, and the tempo of the music and the length of each sound are determined by operating the keyboard 8. Although the pitch is determined based on the music data, the pitch of the sound is determined based on the music data. Therefore, even a player who has not mastered the performance technique of the keyboard instrument can press a key at an appropriate position on the keyboard 8 with good timing. You can just perform.

The electronic keyboard instrument 1 also includes a microphone connection terminal 30 to which a microphone is connected, sings a song in accordance with the music based on the above-described music data, mixes the singing voice and the performance sound, and outputs the sound from the speaker 31. be able to. The output volume of the voice input from the microphone is
Therefore, the relationship between the singing voice and the performance sound can be adjusted regardless of the singing voice. In addition, the pitch of the key sound can be changed by the transposition switch 34, so that the performance sound can be adjusted according to the player's preference.

Further, by operating the volume control lever 36,
The output volume from the speaker 31 can be adjusted,
If headphones are connected to the headphone connection terminal 37, the sound from the speaker 31 stops and the performance sound can be heard only with the headphones. By the way, this electronic keyboard instrument 1
Since the keyboard 8 can be played by the simple operation as described above, the keyboard 8 does not need to be able to cover a wide range of frequencies, and any keyboard that can satisfy the appearance as a keyboard instrument to some extent. Good. Therefore, the keyboard 8 having a very small number of keys can be used, and the width of the electronic keyboard instrument 1 in the left-right direction is shortened accordingly, so that a lightweight and compact instrument that is convenient to carry can be configured.

However, if the width in the left-right direction is reduced, the internal space in which various operation switches, speakers 31, and the flexible disk device 20 can be mounted is limited. In some cases, the length of the electronic keyboard instrument 1 in the front-rear direction or the left-right direction must be increased. However, in the case of the electronic keyboard instrument 1, since the circuit board 16 can be arranged below the keyboard 8,
By expanding the height dimension, storage space can be secured,
An increase in dimension in the front-rear, left-right direction can be suppressed. Therefore, the space required for installing the electronic keyboard instrument 1 is reduced, and the performance can be enjoyed anywhere.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above specific embodiment. For example, in the electronic keyboard instrument 1, the keyboard chassis 10 is fixed to the clapper 13. However, if it is important to optimize the gap between the upper case 4 and the keyboard 8, the keyboard chassis 10 may be fixed to the upper case 4. 4 and may be fixed to both the clapper 13 and the upper case 4. Whichever structure is adopted, the keyboard chassis 1
Unlike the case where 0 is fixed, the gap formed on the side that can be easily seen by the player has an appropriate dimension without mounting errors, and it is easy to secure a storage space directly below the keyboard chassis 10.

The electronic keyboard instrument 1 includes a time signature 13
By fixing the keyboard chassis 10 to the keyboard 8, the relative positional relationship between the keyboard 8 and the clap 13 is optimized, and a storage space is secured below the keyboard chassis 10. Even if you do not secure,
If the keyboard chassis 10 is fixed to the clapboard 13, there is an advantage that the relative positional relationship between the keyboard 8 and the clapboard 13 becomes appropriate. Further, even if the keyboard chassis 10 is fixed to members other than the clapboard 13, a storage space can be secured below the keyboard chassis 10 by properly selecting a fixing position. Alternatively, the keyboard chassis may be fixed to the side plate.

Further, the electronic keyboard instrument 1 is configured to be able to be played by a very simple operation, but the mounting structure of the keyboard chassis 10 in the electronic keyboard instrument 1 is adopted in a general keyboard instrument. Is possible, and in this case, the same effect as that described above is obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view of an electronic keyboard instrument shown as an embodiment.

FIG. 2 is a longitudinal sectional view of the electronic keyboard instrument, and FIG.
Indicates mainly the mounting state of the keyboard chassis, and (b) mainly indicates the mounting state of the clapboard.

[Explanation of symbols]

1 ... electronic keyboard instrument, 3 ... body chassis, 4 ...
-Upper case, 5, 6 ... side plate, 8 ... keyboard, 9-
..Legs, 10 ... Keyboard chassis, 11 ... Keyboard stopper felt, 12 ... Key switch, 13 ... Ballet, 14 ... Screw, 16 ... Circuit board, 20 ...
· Flexible disk device, 22 ··· music selection switch, 23 ··· display, 24 to 26 ··· tone color selection switch, 27 and 28 · performance mode selection switch, 30
... Microphone connection terminal, 31 ... Speaker, 32 ...
.Voice volume adjustment lever, 34 ... transposition switch, 36 ..
-Volume control lever, 37 ... headphone connection terminal.

Claims (5)

[Claims] 1. A keyboard assembly having keys and the like mounted on a keyboard chassis, and a case assembly formed by assembling a plurality of exterior members, and fixing the keyboard assembly to the case assembly. In the electronic keyboard musical instrument configured as described above, the keyboard assembly may be configured such that, of the members constituting the case assembly, in the assembled state of the electronic keyboard musical instrument, the side surfaces at both ends in the key arrangement direction or the rear end of the key. An electronic keyboard musical instrument fixed to a member constituting a portion adjacent to any one of the upper surfaces on the side. 2. The electronic keyboard instrument according to claim 1, wherein the keyboard assembly is fixed to a timepiece arranged on both side surfaces in the arrangement direction of the keys in an assembled state of the electronic keyboard instrument. An electronic keyboard instrument characterized by that: 3. The electronic keyboard instrument according to claim 2, wherein the keyboard assembly is fixed to a lower surface of the clap. 4. A keyboard assembly having a key or the like mounted on a keyboard chassis, and a case assembly formed by assembling a plurality of exterior members, and fixing the keyboard assembly to the case assembly. In the electronic keyboard instrument configured as described above, the keyboard assembly is housed below the keyboard assembly inside the case assembly in an assembled state of the electronic keyboard instrument among members constituting the case assembly. An electronic keyboard musical instrument fixed to a member supporting the keyboard assembly at a position forming a space. 5. The electronic keyboard instrument according to claim 4, wherein a circuit board on which various electric components and the like are disposed is stored in a storage space formed below the keyboard assembly. Musical instruments.