JPH0457897U

JPH0457897U -

Info

Publication number: JPH0457897U
Application number: JP10076190U
Authority: JP
Priority date: 1990-09-26
Filing date: 1990-09-26
Publication date: 1992-05-18
Anticipated expiration: 2005-09-26
Also published as: JP2549474Y2

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例の鍵盤カバー使用
状態を示す平面図、第２図は同じくその側面図、
第３図は同じくその鍵盤カバー不使用状態を示す
要部平面図、第４図は同じくその側面図、第５図
はこの考案の他の実施例を示す要部平面図、第６
図はこの考案のさらに他の実施例を示す要部平面
図、第７図は各実施例に共通な制御系のブロツク
構成図、第８図乃至第１１図は第７図のＣＰＵに
よる処理動作を示すフローチヤート、第１２図は
従来の着脱自在な鍵盤カバーを備えた鍵盤電子楽
器の一例を示す斜視図である。１，１１，２１……楽器本体、２……鍵盤、２
ａ……左鍵域、２ｂ……右鍵域、３……操作パネ
ル、３ａ……鍵盤分割モード専用パネル、４……
スピーカグリル、５，１５，２５……鍵盤カバー
、６，１６……枢軸（モード切換スイツチの操作
軸）、２６……モード切換スイツチのアクチユエ
ータ、４８……モード切換スイツチ。 Fig. 1 is a plan view showing the keyboard cover of an embodiment of this invention in use; Fig. 2 is a side view thereof;
FIG. 3 is a plan view of the main parts of the keyboard cover when it is not in use, FIG. 4 is a side view thereof, FIG. 5 is a plan view of the main parts showing another embodiment of this invention, and FIG.
7 is a block diagram of a control system common to each embodiment, and FIGS. 8 to 11 are processing operations performed by the CPU shown in FIG. 7. FIG. 12 is a perspective view showing an example of a conventional keyboard electronic musical instrument equipped with a detachable keyboard cover. 1, 11, 21... Instrument body, 2... Keyboard, 2
a...Left keyboard area, 2b...Right keyboard area, 3...Operation panel, 3a...Panel for dedicated keyboard split mode, 4...
Speaker grill, 5, 15, 25...Keyboard cover, 6, 16...Pivot (operating shaft of the mode changeover switch), 26...Mode changeover switch actuator, 48...Mode changeover switch.

Claims

[Claims for Utility Model Registration] 1. A first performance control circuit that divides all the keys of a keyboard provided on the main body of a musical instrument into a plurality of key ranges and controls each of the key ranges so that each key range can be played independently; A keyboard electronic musical instrument is provided with a second performance control circuit that controls the keyboard range to be playable as a series of keys, and a keyboard electronic musical instrument is provided with a position that covers and a position that does not cover a part of the keyboard corresponding to an adjacent part of each of the key ranges. A keyboard electronic musical instrument, characterized in that a displaceable keyboard cover is irremovably connected to the musical instrument body. 2. The keyboard electronic musical instrument according to claim 1, further comprising a mode changeover switch that switches between the first and second performance control circuits in conjunction with displacement of the keyboard cover. 3. The keyboard electronic musical instrument according to claim 1 or 2, wherein the keyboard cover is displaced to a position covering a part of the keyboard, thereby exposing an operator used only in a mode in which the keyboard area is divided and played; An electronic keyboard musical instrument, characterized in that the keyboard cover is moved to a position where it does not cover the keyboard, thereby concealing the operator.