JPH0433040B2 - - Google Patents
Info
- Publication number
- JPH0433040B2 JPH0433040B2 JP58251297A JP25129783A JPH0433040B2 JP H0433040 B2 JPH0433040 B2 JP H0433040B2 JP 58251297 A JP58251297 A JP 58251297A JP 25129783 A JP25129783 A JP 25129783A JP H0433040 B2 JPH0433040 B2 JP H0433040B2
- Authority
- JP
- Japan
- Prior art keywords
- frame
- switch
- circuit unit
- attached
- key
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000004020 conductor Substances 0.000 claims description 8
- 239000011810 insulating material Substances 0.000 claims description 5
- 230000005611 electricity Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
Landscapes
- Electrophonic Musical Instruments (AREA)
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は電子オルガンなどに用いられる電子楽
器用鍵盤装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a keyboard device for an electronic musical instrument used in an electronic organ or the like.
従来例の構成とその問題点
最近の電子楽器としては、電子部品の性能向上
により、より高度な性能を求めた回路構成を採用
してきている。Conventional configurations and their problems Recent electronic musical instruments have adopted circuit configurations that require more advanced performance due to improvements in the performance of electronic components.
このような電子楽器用鍵盤装置としては第１図
に示すようにフレーム１の一端に複数個の鍵２を
揺動可能に組込み、この鍵２をスプリング３によ
り鍵２の他端を常に上動付勢し、フレーム１の下
面にスペーサ４を介して鍵２の下動によつて制御
されるスイツチ５を備えた基板６を取付け、かつ
フレーム１の下面に支持アーム７を介して楽器本
体のシヤーシ８を取付け、このシヤーシ８上に楽
器本体の回路ユニツト９を取付けて構成されてい
た。 As shown in FIG. 1, such a keyboard device for an electronic musical instrument has a plurality of keys 2 swingably built into one end of a frame 1, and the other end of the keys 2 is always moved upward by a spring 3. A board 6 equipped with a switch 5 controlled by the downward movement of the key 2 is attached to the lower surface of the frame 1 via a spacer 4, and the instrument body is connected to the lower surface of the frame 1 via a support arm 7. A chassis 8 is attached, and a circuit unit 9 of the main body of the musical instrument is attached onto the chassis 8.
このような構成では、発振素子などを有する回
路ユニツト９からの高周波がスイツチ５の接点部
に入りこんで回路ユニツト９で増幅されて雑音と
なつたり、また、外界からの静電気などが鍵２側
から回路ユニツト９に入りこんで雑音となつて現
われたりする欠点があつた。 In such a configuration, the high frequency from the circuit unit 9 having an oscillation element etc. enters the contact part of the switch 5 and is amplified by the circuit unit 9 and becomes noise, and static electricity from the outside world is transmitted from the key 2 side. This has the disadvantage that it enters the circuit unit 9 and appears as noise.
このようなことから、従来ではスイツチ５を備
えた基板６と回路ユニツト９との間隔を大きくと
つて対策としていたが、万全とはいえず、しかも
大形化するといつた欠点があつた。 Conventionally, a countermeasure against this problem was to increase the distance between the board 6 provided with the switch 5 and the circuit unit 9, but this was not perfect and had the disadvantage of increasing the size.
発明の目的
本発明は以上のような従来の欠点を除去するも
のであり、雑音の発生を防止するとともに薄形化
の図れる電子楽器用鍵盤装置を提供することを目
的とするものである。OBJECTS OF THE INVENTION The present invention is intended to eliminate the above-mentioned conventional drawbacks, and it is an object of the present invention to provide a keyboard device for an electronic musical instrument that can prevent the generation of noise and can be made thinner.
発明の構成
上記目的を達成するために本発明は、フレーム
の一端に常に他端が上動付勢される鍵を揺動可能
に取付け、この鍵によつて操作されるスイツチ部
を上記フレームの下方に設け、このスイツチ部の
下面に導電材と絶縁材からなるシールド板を上記
スイツチ部をフレームに取付けるビスにより取付
け、このビスによりシールド板の導電材とフレー
ムを導通させて構成され、この構成とすることに
よつてスイツチ部の下部に配置される楽器本体の
回路ユニツトとスイツチ部をシールドし、高周波
がスイツチ部に入つたり、外界の静電気が回路ユ
ニツトに入つたりするのを防止できる。Structure of the Invention In order to achieve the above-mentioned object, the present invention includes a key that is swingably attached to one end of the frame, the other end of which is always biased upward, and a switch portion operated by this key is connected to the frame. A shield plate made of a conductive material and an insulating material is attached to the lower surface of the switch part using screws that attach the switch part to the frame, and the conductive material of the shield plate and the frame are electrically connected by the screws. By doing so, it is possible to shield the circuit unit of the instrument body located below the switch part and the switch part, and prevent high frequencies from entering the switch part and static electricity from the outside world from entering the circuit unit. .
実施例の説明
以下、本発明の実施例を図面第２図、第３図に
より説明する。DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to FIGS. 2 and 3 of the drawings.
１０は金属よりなるフレームで、このフレーム
１０の一端には鍵１１の一端が揺動可能に取付け
られている。この鍵１１の下面にはスプリング１
２が配置され、この鍵１１の他端はこのスプリン
グ１２によつて常に上動付勢されている。また、
フレーム１０の下面にはスイツチ部１３が配置さ
れている。このスイツチ部１３は、固定接点を印
刷したプリント基板１４と可動接点をもつた操作
部１５によつて構成され、この操作部１５の上部
はフレーム１０を貫通して鍵１１のアクチエータ
１６と対応している。 Reference numeral 10 denotes a frame made of metal, and one end of a key 11 is swingably attached to one end of this frame 10. A spring 1 is attached to the underside of this key 11.
2 is disposed, and the other end of this key 11 is always urged upwardly by this spring 12. Also,
A switch section 13 is arranged on the lower surface of the frame 10. This switch section 13 is composed of a printed circuit board 14 with fixed contacts printed thereon and an operating section 15 having movable contacts. ing.
上記スイツチ部１３の下面には第３図に示すよ
うな導電材１７の上下面に絶縁材１８，１９を配
置して構成したシールド板２０が配置され、この
シールド板２０はスイツチ部１３をフレーム１０
にスペーサ２１を介して取付けるビス２２で結合
され、このビス２２の頭部と接する部分には絶縁
材１８に孔２３が形成されて導電材１７が表出し
てビス２２と導電材１７が電気的に導通するよう
に構成され、したがつて導電材１７はビス２２を
介してフレーム１０と導通されることになる。 A shield plate 20 is disposed on the lower surface of the switch section 13, as shown in FIG. 10
A hole 23 is formed in the insulating material 18 at the part that contacts the head of the screw 22, and the conductive material 17 is exposed, so that the screw 22 and the conductive material 17 are electrically connected. Therefore, the conductive material 17 is electrically connected to the frame 10 via the screws 22.
また、フレーム１０の下面には取間アーム２４
を介して楽器本体のシヤーシ２５が結合され、こ
のシヤーシ２５上には楽器本体の回路ユニツト２
６が取付けられている。 Additionally, a clearance arm 24 is provided on the bottom surface of the frame 10.
The chassis 25 of the instrument body is connected via the chassis 25, and the circuit unit 2 of the instrument body is mounted on this chassis 25.
6 is installed.
したがつて、この回路ユニツト２６とスイツチ
部１３との間にはシールド板２０が配置され、両
者をシールドしている。 Therefore, a shield plate 20 is disposed between the circuit unit 26 and the switch section 13 to shield them both.
発明の効果
以上のように本発明の電子楽器用鍵盤装置は構
成されるため、楽器本体の回路ユニツトからの高
周波成分がスイツチ部に入りこむことや、外界か
らの静電気が回路ユニツトに入りこむことはシー
ルド板でシールドされフレームを通してアースに
落されるため、雑音となつて現われることはなく
電子楽器として性能、品質をさらに一段向上させ
ることができ、しかも回路ユニツトとスイツ部の
間隔を短かくとつてもシールド板の絶縁材で絶縁
されて短絡事故や放電といつたことも阻止でき、
そのために薄形の設計をすることが可能となるな
どの利点をもち、工業的価値の大なるものであ
る。Effects of the Invention Since the keyboard device for an electronic musical instrument of the present invention is constructed as described above, it is possible to shield high frequency components from the circuit unit of the musical instrument body from entering the switch section and static electricity from the outside world from entering the circuit unit. Since it is shielded by a board and grounded through the frame, it does not appear as noise, further improving the performance and quality of the electronic musical instrument.Moreover, the distance between the circuit unit and the switch section can be shortened. The insulating material of the shield plate prevents short circuits and electrical discharges.
Therefore, it has the advantage of being able to have a thin design, and is of great industrial value.
第１図は従来の電子楽器用鍵盤装置を示す側面
図、第２図は本発明の電子楽器用鍵盤装置の一実
施例を示す側面図、第３図は同装置に用いるシー
ルド板の斜視図である。
１０……フレーム、１１……鍵、１２……スプ
リング、１３……スイツチ部、１４……プリント
基板、１５……操作部、１６……アクチエータ、
１７……導電材、１８，１９……絶縁材、２０…
…シールド板、２１……スペーサ、２２……ビ
ス、２３……孔、２４……取付アーム、２５……
シヤーシ、２６……回路ユニツト。
Fig. 1 is a side view showing a conventional keyboard device for an electronic musical instrument, Fig. 2 is a side view showing an embodiment of the keyboard device for an electronic musical instrument according to the present invention, and Fig. 3 is a perspective view of a shield plate used in the device. It is. DESCRIPTION OF SYMBOLS 10... Frame, 11... Key, 12... Spring, 13... Switch part, 14... Printed circuit board, 15... Operation part, 16... Actuator,
17... Conductive material, 18, 19... Insulating material, 20...
...shield plate, 21 ... spacer, 22 ... screw, 23 ... hole, 24 ... mounting arm, 25 ...
Chassis, 26...Circuit unit.
Claims (1)
鍵を揺動可能に取付け、この鍵によつて操作され
るスイツチ部を上記フレームの下方に設け、この
スイツチ部の下面に導電材と絶縁材からなるシー
ルド板を上記スイツチ部をフレームに取付けるビ
スにより取付け、このビスによりシールド板の導
電材とフレームを導通させてなる電子楽器用鍵盤
装置。1 A key whose other end is always biased upward is swingably attached to one end of the frame, a switch section operated by this key is provided below the frame, and a conductive material is attached to the underside of the switch section. A keyboard device for an electronic musical instrument, in which a shield plate made of an insulating material is attached by screws that attach the switch part to the frame, and the conductive material of the shield plate and the frame are electrically connected by the screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58251297A JPS60143397A (en) | 1983-12-29 | 1983-12-29 | Keyboard device for electronic musical instruments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58251297A JPS60143397A (en) | 1983-12-29 | 1983-12-29 | Keyboard device for electronic musical instruments |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60143397A JPS60143397A (en) | 1985-07-29 |
| JPH0433040B2 true JPH0433040B2 (en) | 1992-06-01 |
Family
ID=17220707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58251297A Granted JPS60143397A (en) | 1983-12-29 | 1983-12-29 | Keyboard device for electronic musical instruments |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60143397A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63141998U (en) * | 1987-03-09 | 1988-09-19 | ||
| JP2003005740A (en) * | 2001-06-19 | 2003-01-08 | Kawai Musical Instr Mfg Co Ltd | Piano action |
-
1983
- 1983-12-29 JP JP58251297A patent/JPS60143397A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60143397A (en) | 1985-07-29 |
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