JP2552205Y2 - Electronic keyboard instrument fuselage - Google Patents
Electronic keyboard instrument fuselageInfo
- Publication number
- JP2552205Y2 JP2552205Y2 JP1991075247U JP7524791U JP2552205Y2 JP 2552205 Y2 JP2552205 Y2 JP 2552205Y2 JP 1991075247 U JP1991075247 U JP 1991075247U JP 7524791 U JP7524791 U JP 7524791U JP 2552205 Y2 JP2552205 Y2 JP 2552205Y2
- Authority
- JP
- Japan
- Prior art keywords
- case
- circuit
- lower case
- sound
- electronic keyboard
- 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
Landscapes
- Details Of Audible-Bandwidth Transducers (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この考案は内部に発音機構を備え
る電子鍵盤楽器の機体の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a body of an electronic keyboard instrument having a sound generating mechanism therein.
【０００２】[0002]
【従来の技術】内部に発音機構を備える従来の電子鍵盤
楽器を示せば図３のとおりであり、機体はプラスチック
製の横長皿状の上ケース１と下ケース２とで横長扁平に
形成され、上ケース１の前側には所要音階分の鍵盤Ｋが
装着されると共にその後側には音色，音量等を制御する
各種のスイッチ部材５ａやボリューム部材５ｂが取付け
られ、更に側部には裏面にコーン型のスピーカ４を取付
けるようにした放音用の格子部６が設けられ、裏面に
は、集積回路に抵抗器やコンデンサ等の電子部品３ａを
取付けた音源回路又は複数の音色回路、或は増幅器や電
源回路等を備えた幾つかのプリント基板３が配設され、
下ケース２には電源供給用の電池ボックス（図示せず）
等が配置される。2. Description of the Related Art A conventional electronic keyboard having a sound generating mechanism inside.
The musical instrument is shown in FIG. 3. The body is formed in a horizontally long and flat shape with a plastic horizontal dish-shaped upper case 1 and lower case 2, and a keyboard K for a required musical scale is mounted on the front side of the upper case 1. On the rear side, various switch members 5a and volume members 5b for controlling the tone and volume are attached, and on the side, a cone-shaped speaker 4 is attached on the back surface. A printed circuit board 3 having a sound source circuit or a plurality of tone circuits or an amplifier, a power supply circuit and the like on which an electronic component 3a such as a resistor and a capacitor is mounted on an integrated circuit is provided on the back surface. Established
A battery box (not shown) for power supply is provided in the lower case 2.
Etc. are arranged.
【０００３】そして、上ケース１と下ケース２の四方の
角隅部及び長手方向前後の中央部にはつなぎ突子７ａ，
７ｂがそれぞれ設けられ、これらのつなぎ突子７ａ，７
ｂを突き合せながら下ケース２に上ケース１をかぶせ、
図４のように下側からつなぎ突子７ａ，７ｂにねじ８を
ねじ込んで、上下のケース１，２を一体に組付け、使用
時には、鍵盤Ｋの押鍵操作により各回路を通じて出力さ
れる楽音信号を増幅器で増幅させてスピーカ４に送り、
所要の楽音として格子部６から放音するようになされて
いる。[0003] At the four corners of the upper case 1 and the lower case 2 and at the center in the longitudinal direction, connecting projections 7a,
7b are provided respectively, and these connecting projections 7a, 7b are provided.
Put upper case 1 on lower case 2 while matching b
As shown in FIG. 4, the screws 8 are screwed into the connecting projections 7a and 7b from below, and the upper and lower cases 1 and 2 are integrally assembled. The signal is amplified by an amplifier and sent to the speaker 4,
Sound is emitted from the lattice section 6 as a required musical sound.
【０００４】[0004]
【考案が解決しようとする課題】ところで、上記従来の
電子鍵盤楽器では、上下ケースを角隅や中央部に設けた
つなぎ突子を突き合せてねじで組付けるだけのものであ
るため、プラスチック製の上下のケースの突き合せ部
で、ねじで結合しない部分の接合が不完全であって、使
用中にスピーカの音量を大きくすると、上下のケースの
端面同士がぶつかり合ってびびり音を発生するばかりで
なく、プリント基板自体や基板上の電子部品等が振動し
て耳障りな音を出す等の不具合がある。However, in the above-mentioned conventional electronic keyboard musical instrument, the upper and lower cases are merely assembled with screws by butt-connecting the connecting projections provided at the corners and the center, and are made of plastic. If the volume of the loudspeaker is too high during use, the ends of the upper and lower cases may collide with each other and generate chattering noise when the parts that are not joined with screws are incompletely joined at the butting part of the upper and lower cases. In addition, the printed circuit board itself and electronic components on the board vibrate and generate annoying sounds.
【０００５】そこで、この考案は発音機構の出力を高め
たにしても、機体から不快なびびり音や異常音を生じな
いようにすることを目的とする。[0005] Therefore, an object of the present invention is to prevent an unpleasant chattering sound and an abnormal sound from being generated even when the output of the sound generating mechanism is increased.
【０００６】[0006]
【課題を解決するための手段】上記目的達成のためにこ
の考案は、表面側に鍵盤を備えると共に音色又は音量制
御用のスイッチ部材やボリューム部材等を有し、裏面側
にはスピーカを取付けると共に音源回路又は音色回路或
いは電源回路等を備えた複数のプリント基板を配設する
上ケースと、内側に電源部材等を配設する下ケースとを
周囲の複数箇所においてねじ結合する電子鍵盤楽器の機
体として、上ケースと下ケースの相対する四方の角隅部
に所要の幅と深さの切欠凹所をそれぞれ形成し、それら
の切欠凹所には、軟質の弾性材からなり切欠凹所の形状
にほぼ一致する外壁部と内壁部及びその間のつなぎ片か
らなる挿入体をそれぞれ緊密に挟み込んで装着し、上下
ケースを一体に結合するようにしたことを特徴としてい
る。In order to achieve the above object, the present invention provides a keyboard having a keyboard on the front side and a timbre or volume control.
It has a switch member and a volume member, etc.
A speaker and a tone generator circuit or tone circuit or
Or multiple printed circuit boards equipped with power supply circuits, etc.
The upper case and the lower case where the power supply
An electronic keyboard instrument that is screw-connected at multiple locations around it
Four corners of the upper case and lower case facing each other
Notch recesses of the required width and depth
The notch recess is made of soft elastic material and the shape of the notch recess
Outer wall and inner wall, and the connecting piece between them
Insert each of the inserts tightly
It is characterized in that the cases are integrally connected .
【０００７】[0007]
【実施例】図１，図２はこの考案の実施例を示すもので
あり、機体Ｆはプラスチック製皿状の上ケース１１と下
ケース１２とで横長扁平に形成され、上ケース１１の前
側には所要音階分の鍵盤Ｋが装着されると共にその後側
には音色，音量等を制御するための各種のスイッチ部材
１５ａやボリューム部材１５ｂが取付けられ、更に側部
には裏面にコーン型のスピーカ１４を取付けるようにし
た格子部１６が設けられ、裏面には、集積回路に抵抗器
やコンデンサ等の電子部品１３ａを取付けた音源回路又
は複数の音色回路或は増幅器や電源回路等を備えた幾つ
かのプリント基板１３（図では１つだけを示した）が配
設され、下ケース１２には電源供給用の電池ボックス
（図示せず）等が配置される。1 and 2 show an embodiment of the present invention. An airframe F is formed by a plastic dish-like upper case 11 and lower case 12 in a horizontally long and flat shape. Is equipped with a keyboard K for a required musical scale, and on the rear side are mounted various switch members 15a and volume members 15b for controlling tone color, volume, and the like. provided grating portion 16 to attach the, on the back, with a resistor and co emissions capacitors and other electronic parts 13a tone generator or tone circuit or amplifier and a power supply circuit fitted with such a integrated circuit Several printed circuit boards 13 (only one is shown in the figure) are provided, and a battery box (not shown) for supplying power is arranged in the lower case 12.
【０００８】そして、上ケース１１と下ケース１２の四
方の角隅部と長手方向前後の中央部には、それぞれ周壁
の内のり高さにほぼ等しい高さのつなぎ突子１７ａ，１
７ｂが設けられ、又、上下のケース１１，１２の四方の
角隅部には、それぞれ幅がほぼ四分の一円周程度にわた
る所要深さの切欠凹所１９ａ，１９ｂが形成されてお
り、これらの切欠凹所１９ａ，１９ｂの部分に次のよう
な挿入体２０が取付けられて上下のケース１１，１２は
組付けられる。[0008] At four corners of the upper case 11 and the lower case 12 and at the center in the longitudinal direction, connecting spigots 17a, 17 each having a height substantially equal to the inner height of the peripheral wall are provided.
7b, and cutout recesses 19a, 19b each having a required depth over a width of about a quarter of a circle are formed at the four corners of the upper and lower cases 11, 12, respectively. Inserts 20 as described below are attached to these notched concave portions 19a and 19b, and upper and lower cases 11, 12 are assembled.
【０００９】挿入体２０は柔軟なゴム，合成樹脂等の弾
性材からなり、上下のケース１１，１２の角隅部の形状
にほぼ一致する円弧状をなし、上下のケースの周壁にま
たがる外壁部２０ａとこれより高さの低い内壁部２０ｂ
及び両壁部を結び上下のケースの切欠凹所１９ａ，１９
ｂの間に密接して介在される短く平坦なつなぎ片２０ｃ
とで形成されている。The insert 20 is made of an elastic material such as flexible rubber or synthetic resin, and has an arc shape substantially matching the shape of the corners of the upper and lower cases 11 and 12, and an outer wall portion extending over the peripheral walls of the upper and lower cases. 20a and lower inner wall portion 20b
And notch recesses 19a, 19 of the upper and lower cases connecting the two wall portions.
b, a short flat connecting piece 20c closely interposed between
And formed.
【００１０】上下のケース１１，１２の結合に当たって
は、先ず上ケース１１の各角隅に図１の点線のように挿
入体２０を内外の上半部の壁部２０ａ，２０ｂで上ケー
スの切欠凹所１９ａを緊密に挟むようにしてそれぞれ装
着し、次いで、その上ケース１１の角隅部と中央部のつ
なぎ突子１７ａをこれに対応する下ケース１２のつなぎ
突子１７ｂに、それぞれ対向させながら、各挿入体２０
の下半部の内外壁部２０ａ，２０ｂの間に下ケース１２
の角隅部の切欠凹所１９ｂの部分を図２のようにそれぞ
れ緊密に挟み込んで、下ケース１２上に上ケース１１を
被嵌し、整列する各つなぎ突子１７ａ，１７ｂに下側か
らねじ１８をねじ込むことにより上下のケース１１，１
２を一体に結合する。When connecting the upper and lower cases 11, 12, first, the insert 20 is cut into the corners of the upper case 11 by notches in the upper and lower walls 20a, 20b as shown by dotted lines in FIG. Each of the recesses 19a is attached so as to sandwich it tightly, and then the connecting protrusions 17a of the upper corner 11 and the central portion of the upper case 11 face the corresponding connecting protrusions 17b of the lower case 12, respectively. Each insert 20
The lower case 12 is provided between the inner and outer wall portions 20a and 20b of the lower half.
2, the notch recesses 19b at the corners are tightly sandwiched as shown in FIG. 2, and the upper case 11 is fitted on the lower case 12, and the connecting projections 17a and 17b are aligned from below with screws. 18 into the upper and lower cases 11, 1
2 are joined together.
【００１１】かくて、使用時には押鍵操作により各回路
を通じて出力される楽音信号が増幅されて、スピーカ１
４に入り、所要の楽音として放音されるが、その場合、
上下ケース１１，１２の四方の角隅部には、軟質の弾性
材からなる挿入体２０が、その内外壁部２０ａ，２０ｂ
でケース角隅の周壁部分を緊密に挟み込んで装着されて
いる、即ち、上下のケースは四方の挿入体２０により緊
密に弾性的に支えられているので、発音動作に伴うスピ
ーカ１４自体の振動が上下のケース１１，１２に伝わっ
たにしても、上下のケース１１，１２の振動は弾性挿入
体２０によって抑制され、充分に減衰されることにな
る。Thus, in use, a tone signal output through each circuit is amplified by a key depression operation, and the speaker 1 is amplified.
4 and it is emitted as the required musical sound.
Inserts 20 made of a soft elastic material are provided at the four corners of the upper and lower cases 11, 12 at the inner and outer wall portions 20a, 20b.
The upper and lower cases are tightly and elastically supported by the four inserts 20, so that the vibration of the speaker 14 itself accompanying the sound generation operation is reduced. Even if the vibrations are transmitted to the upper and lower cases 11, 12, the vibration of the upper and lower cases 11, 12 is suppressed by the elastic insert 20, and is sufficiently attenuated.
【００１２】[0012]
【考案の効果】以上のようにこの考案では、表面側に鍵
盤を備えると共に音色又は音量制御用のスイッチ部材や
ボリューム部材等を有し、裏面側にはスピーカを取付け
ると共に音源回路又は音色回路或いは電源回路等を備え
た複数のプリント基板を配設する上ケースと、内側に電
源部材等を配設する下ケースとを周囲の複数箇所におい
てねじ結合する電子鍵盤楽器の機体として、上ケースと
下ケースの相対する四方の角隅部に所要の幅と深さの切
欠凹所をそれぞれ形成し、それらの切欠凹所には、軟質
の弾性材からなり切欠凹所の形状にほぼ一致する外壁部
と内壁部及びその間のつなぎ片からなる挿入体をそれぞ
れ緊密に挟み込んで装着し、上下ケースを一体に結合す
るようにしたので、各ケースは少なくとも四方からしっ
かりと弾性的に支えられ、発音機構の振動がケースに伝
わったにしても、その振動を抑制して適切に減衰させる
ことができ、スピーカの音量を大きくしても従来のよう
なケースの端面同士のぶつかり合いによる不快なびびり
音や、プリント基板や電子部品の振動による異常音を発
生するようなことがない。しかも、弾性挿入体は上下 ケ
ースの対向角隅部に形成した切欠凹所に嵌め合せる程度
の大きさのものでよく余分な部分を持たず、構成が簡単
で取扱い易く、又その取付けは強固であって、妄りに外
れることなく、挿入体は滑り止めの把手として使用する
ことができ、又外部からの衝撃緩和用のパッド材の役割
を果すことができる。[Effect of the invention] As described above, in this invention , the key
It is equipped with a board and a switch member for tone or volume control,
It has a volume member, etc., and a speaker is attached on the back side
And a sound source circuit, tone circuit, power supply circuit, etc.
Upper case where multiple printed circuit boards are
Remove the lower case where the source member
The upper case and the body of the electronic keyboard instrument
Cut the required width and depth at the opposite corners of the lower case.
Each of the notches is formed with a soft notch
Outer wall made of elastic material and almost conforming to the shape of the notch recess
And the insert consisting of the inner wall and the connecting piece between them
And tightly sandwich it, and attach the upper and lower cases together.
As a result, each case is firmly and elastically supported from at least four sides, and even if the vibration of the sound generating mechanism is transmitted to the case, the vibration can be suppressed and appropriately attenuated, and the volume of the speaker Even if is increased, unpleasant chattering noise due to collision between the end faces of the case and abnormal noise due to vibration of the printed circuit board and electronic components do not occur. In addition, the elastic insert body up and down Quai
The degree of fitting into the notch recess formed in the opposite corner of the base
Easy to configure with no extra parts
It is easy to handle, and its attachment is strong, it can be used as a grip for non-slip, and it can serve as a pad material for cushioning external shocks .
【図１】この考案を適用した電子鍵盤楽器の分解斜視
図。FIG. 1 is an exploded perspective view of an electronic keyboard instrument to which the present invention is applied.
【図２】二つのケースを結合し挿入体の取付け状態を示
す機体端部の断面図。FIG. 2 is a cross-sectional view of an end of the body, showing a state where two cases are connected and an insert is attached.
【図３】従来の電子鍵盤楽器の分解斜視図。FIG. 3 is an exploded perspective view of a conventional electronic keyboard instrument.
【図４】従来の上下のケースを結合させた際の一端部の
断面図。FIG. 4 is a cross-sectional view of one end when the conventional upper and lower cases are combined.
１１ 上ケース １２ 下ケース １３ プリント基板 １４ スピーカ １５ａ スイッチ部材 １６ 格子部 １７ａ つなぎ突子 １７ｂ つなぎ突子 １９ａ 切欠凹所 １９ｂ 切欠凹所 ２０ 挿入体 ２０ａ 外壁部 ２０ｂ 内壁部 Ｋ 鍵盤 DESCRIPTION OF SYMBOLS 11 Upper case 12 Lower case 13 Printed circuit board 14 Speaker 15a Switch member 16 Lattice part 17a Connecting piece 17b Connecting piece 19a Notch notch 19b Notch notch 20 Insert 20a Outer wall part 20b Inner wall part K keyboard
Claims (1)
量制御用のスイッチ部材やボリュウム部材等を有し、裏
面側にはスピーカを取付けると共に音源回路又は音色回
路或いは電源回路等を備えた複数のプリント基板を配設
する上ケース１１と、内側に電源部材等を配設する下ケ
ース１２とを周囲の複数箇所においてねじ結合する電子
鍵盤楽器の機体において、上ケース１１と下ケース１２
の相対する四方の角隅部に所要の幅と深さの切欠凹所１
９ａ，１９ｂをそれぞれ形成し、それらの切欠凹所１９
ａ，１９ｂには、軟質の弾性材からなり切欠凹所１９
ａ，１９ｂの形状にほぼ一致する外壁部２０ａと内壁部
２０ｂ及びその間のつなぎ片２０ｃからなる挿入体２０
をそれぞれ緊密に挟み込んで装着し，上下のケース１
１，１２を一体に結合するようにしたことを特徴とする
電子鍵盤楽器の機体。An electronic musical instrument comprising a keyboard on the front side and a timbre or sound.
It has a switch member for volume control and a volume member, etc.
On the front side, attach a speaker and sound source circuit or tone
Multiple printed circuit boards with circuit or power supply circuit
Upper case 11 and a lower case
Electrons that screw-connect with the base 12 at multiple locations around
An upper case 11 and a lower case 12
Notch recesses 1 of required width and depth at four corners opposite
9a, 19b, respectively, and their notches 19
a and 19b are cutout recesses 19 made of a soft elastic material.
an outer wall portion 20a and an inner wall portion substantially corresponding to the shapes of a and 19b
Insert 20 consisting of 20b and connecting piece 20c therebetween
And the upper and lower cases 1
A body of an electronic keyboard instrument, characterized in that the bodies 1 and 12 are integrally connected .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991075247U JP2552205Y2 (en) | 1991-08-27 | 1991-08-27 | Electronic keyboard instrument fuselage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991075247U JP2552205Y2 (en) | 1991-08-27 | 1991-08-27 | Electronic keyboard instrument fuselage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0580085U JPH0580085U (en) | 1993-10-29 |
| JP2552205Y2 true JP2552205Y2 (en) | 1997-10-29 |
Family
ID=13570707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991075247U Expired - Lifetime JP2552205Y2 (en) | 1991-08-27 | 1991-08-27 | Electronic keyboard instrument fuselage |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2552205Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007025444A (en) * | 2005-07-20 | 2007-02-01 | Yamaha Corp | Electronic keyboard musical instrument |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4582118B2 (en) * | 2007-06-08 | 2010-11-17 | カシオ計算機株式会社 | Electronic musical instruments |
| JP5682852B2 (en) * | 2009-08-19 | 2015-03-11 | ヤマハ株式会社 | Electronic keyboard instrument exterior structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH024344U (en) * | 1988-06-23 | 1990-01-11 |
-
1991
- 1991-08-27 JP JP1991075247U patent/JP2552205Y2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007025444A (en) * | 2005-07-20 | 2007-02-01 | Yamaha Corp | Electronic keyboard musical instrument |
| JP4529829B2 (en) * | 2005-07-20 | 2010-08-25 | ヤマハ株式会社 | Electronic keyboard instrument |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0580085U (en) | 1993-10-29 |
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