JP2734880B2 - Keyboard circuit of electronic musical instrument - Google Patents
Keyboard circuit of electronic musical instrumentInfo
- Publication number
- JP2734880B2 JP2734880B2 JP4133966A JP13396692A JP2734880B2 JP 2734880 B2 JP2734880 B2 JP 2734880B2 JP 4133966 A JP4133966 A JP 4133966A JP 13396692 A JP13396692 A JP 13396692A JP 2734880 B2 JP2734880 B2 JP 2734880B2
- Authority
- JP
- Japan
- Prior art keywords
- keyboard
- musical instrument
- board
- circuit board
- electronic musical
- 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 - Fee Related
Links
Landscapes
- Insertion, Bundling And Securing Of Wires For Electric Apparatuses (AREA)
- Electrophonic Musical Instruments (AREA)
- Structure Of Printed Boards (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、電子回路の配線に用
いる電子楽器の鍵盤回路基板に関し、特に基板部と束線
部とを一体に形成した電子楽器の鍵盤回路基板に関す
る。BACKGROUND OF THE INVENTION This invention relates to a keyboard circuit board of the electronic musical instrument to be used for wiring electronic circuits, and keyboard circuit board of an electronic musical instrument, especially to form a substrate portion and the wire bundle portion integrally.
【０００２】[0002]
【従来の技術】一般に、例えば電子鍵盤楽器の鍵盤ユニ
ット部等は機種が異なっても鍵数が同じ場合には共通に
使用されることが多い。そのため、鍵盤回路基板は共通
となるが、この基板と他の基板とを結ぶ束線の長さは機
種毎に異なることがある。このような場合、従来は束線
を機種毎に使い分けるのが普通であった。2. Description of the Related Art Generally, for example, a keyboard unit of an electronic keyboard instrument is often used in common when the number of keys is the same even if the model is different. Therefore, the keyboard circuit board is common, but the length of the bundle connecting this board to another board may be different for each model. In such a case, conventionally, it has been usual to use the bundled wire for each model.
【０００３】図４は従来の電子鍵盤楽器の鍵盤ユニット
部の一例を示す側面図、図５はその裏面図であり、多数
の白鍵及び黒鍵からなる鍵１の下部に設けられたアクチ
ュエータ１ａが、ドーム状の接点ラバー部材２を介して
鍵盤フレーム３上の鍵盤回路基板４に形成した常開の固
定接点を開閉させるようになっている。このとき、固定
接点は、鍵１の最大可動部である自由端近傍に配置せざ
るを得ず、その下部にメイン回路基板等を配すると楽器
本体の厚みが増えて好ましくない。そのため、メイン回
路基板は鍵の後方に配設されるのが普通であり、その配
設位置は各機種毎に異なっている。 FIG. 4 is a side view showing an example of a keyboard unit of a conventional electronic keyboard instrument, and FIG. 5 is a rear view of the keyboard unit. The actuator 1a is provided below a key 1 composed of a number of white keys and black keys. However, normally open fixed contacts formed on the keyboard circuit board 4 on the keyboard frame 3 via the dome-shaped contact rubber member 2 are opened and closed. At this time, fixed
The contact is located near the free end, which is the largest movable part of the key 1.
If the main circuit board etc. is arranged below it,
The thickness of the main body increases, which is not preferable. Therefore, the main times
The circuit board is usually located behind the key,
The installation position differs for each model.
【０００４】通常、鍵盤回路基板４は、紙基材フェノー
ル樹脂積層板あるいはガラス繊維を基材としてエポキシ
樹脂を含浸した積層板等の絶縁基板上に、銅箔等の導体
による配線を写真エッチング，シルクスクリーン印刷又
はメッキ等により形成したものであり、後端部に結線し
た多数のリボン線からなる鍵盤束線５の長さを各機種毎
に変更している。 Normally, the keyboard circuit board 4 is formed by photo-etching a wiring made of a conductor such as copper foil on an insulating substrate such as a paper base phenol resin laminate or a laminate made of glass fiber and impregnated with an epoxy resin. It is formed by silk screen printing, plating, or the like, and the length of the keyboard bundle 5 composed of a large number of ribbon wires connected to the rear end is changed for each model.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、このよ
うな従来の電子楽器の鍵盤回路基板にあっては、基板部
と束線部とが別部品になっており、且つ機種毎に長さの
異なる束線を用意しなければならないので、部品点数が
多くなり組立工数や在庫管理工数が増加してコスト高に
なるという問題点があった。この発明は上記の点に鑑み
てなされたものであり、部品点数を少くして組立工数や
在庫管理工数を低減させると共に基板を共通化して生産
コストを低下させることを目的とする。However, in such a conventional keyboard circuit board of an electronic musical instrument , the board section and the bundled section are separate parts, and the length differs for each model. Since bundled wires must be prepared, there is a problem that the number of parts increases, the number of assembling steps and the number of man-hours for inventory control increase, and the cost increases. The present invention has been made in view of the above points, and has as its object to reduce the number of parts to reduce the number of assembling steps and inventory management steps, and to reduce the production cost by using a common substrate.
【０００６】[0006]
【課題を解決するための手段】この発明は上記の目的を
達成するため、基板部と束線部とを一体に形成したフレ
キシブル基板からなる電子楽器の鍵盤回路基板であっ
て、上記基板部は、少なくとも鍵対向面に、押鍵時に可
動接点の圧接により閉成される固定接点を有し、上記束
線部は、展開可能に密接して設けられ、上記基板部と他
の基板との接続部を構成する電子楽器の鍵盤回路基板を
提供するものである。Since SUMMARY OF THE INVENTION The present invention to achieve the above object, a substrate portion and the bundled portion A keyboard circuit board of an electronic musical instrument comprising a flexible substrate formed integrally, the substrate portion , At least on the key-facing surface
A fixed contact that is closed by pressure contact of the moving contact, wherein the bundled portion is provided so as to be expandable and close to the substrate portion;
And a keyboard circuit board for an electronic musical instrument which constitutes a connection portion with the board.
【０００７】[0007]
【作用】この発明による電子楽器の鍵盤回路基板は上記
のように構成することにより、密接している束線部の一
部又は全部を展開させると、束線部の長さを必要に応じ
て自由に設定することができる。したがって、回路基板
が共通で束線部の長さだけが異なる場合には、共通のフ
レキシブル基板をすべての機種に使用することができ
る。 The keyboard circuit board of the electronic musical instrument according to the present invention is constructed as described above, so that when a part or the whole of a close bundle portion is developed, the length of the bundle portion can be increased as required. Can be set freely. Therefore, when the circuit board is common and only the length of the bundle portion is different, a common flexible board can be used for all models.
【０００８】[0008]
【実施例】以下、この発明の実施例を図面に基づいて具
体的に説明するが、図４及び図５に対応する部分には同
一の符号を付して示しその説明は省略する。図１はこの
発明の一実施例の線幅を拡大して示す平面図、図２はこ
の発明を実施した電子鍵盤楽器の鍵盤ユニット部を示す
側面図である。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. Parts corresponding to those in FIGS. 4 and 5 are denoted by the same reference numerals, and description thereof is omitted. FIG. 1 is an enlarged plan view showing a line width of an embodiment of the present invention, and FIG. 2 is a side view showing a keyboard unit of an electronic keyboard instrument embodying the present invention.
【０００９】図２において、多数の白鍵及び黒鍵からな
る鍵１の下部にアクチュエータ１ａを突設し、それに対
応して鍵盤フレーム３上に設けたフレキシブル基板１０
の基板部１１に非導通の固定接点６を形成する。基板部
１１上に、ゴム等の弾性材によって一体に形成した周知
の接点ラバー部材２を載置し、内部に垂設した柱状部下
面に可動接点７を設け、押鍵時、アクチュエータ１ａが
接点ラバー部材２を弾性変形させることにより可動接点
７が固定接点６に圧接されてこの固定接点６を閉成させ
るようにする。In FIG. 2, an actuator 1a protrudes below a key 1 composed of a large number of white keys and black keys, and a flexible substrate 10 provided on a keyboard frame 3 corresponding thereto.
A non-conductive fixed contact 6 is formed on the substrate portion 11 of FIG. A well-known contact rubber member 2 integrally formed of an elastic material such as rubber is placed on a substrate portion 11, and a movable contact 7 is provided on a lower surface of a columnar portion which is vertically provided inside. The movable contact 7 is pressed against the fixed contact 6 by elastically deforming the rubber member 2 so that the fixed contact 6 is closed.
【００１０】このフレキシブル基板１０は、ポリエステ
ルフィルムに銅（Ｃｕ）又は銀（Ａｇ）のパターンを施
し、その上をレジストしたものであり、例えば図１に示
すように、固定接点６を形成した基板部１１と、この導
通パターンを図示しない他の基板に接続する束線部１２
とからなる。固定接点６は上記金属パターンの上からカ
ーボン処理したものである。なお、上記のレジストはし
なくても機能するが、固定接点６を除いてすることによ
り耐久性を向上させることができる。The flexible substrate 10 is formed by applying a pattern of copper (Cu) or silver (Ag) to a polyester film and resisting the pattern. For example, as shown in FIG. Part 11 and a bundled part 12 for connecting this conductive pattern to another substrate (not shown)
Consists of The fixed contact 6 is obtained by performing a carbon treatment on the metal pattern. It should be noted that although the above-mentioned resist works without the resist, the durability can be improved by removing the fixed contact 6.
【００１１】基板部１１は、複数（図では５個）の固定
接点６を形成し、これらの固定接点６からの配線１３を
束線部１２上に所定のピッチで互いに平行してヘアピン
状に密接形成し、境界部にミシン目や肉薄部等のように
手で容易に切断し得る可断部１４を設け、この可断部１
４を切断することにより密接形成した束線部１２が図３
に示すようにＷ字状に展開し得るようにする。The substrate section 11 forms a plurality (five in the figure) of fixed contacts 6, and wires 13 from these fixed contacts 6 are arranged on the bundle section 12 at a predetermined pitch in a hairpin shape in parallel with each other. A cutable portion 14 that is closely formed and that can be easily cut by hand, such as a perforation or a thin portion, is provided at the boundary portion.
Bundled portion closely formed by cutting a 4 1 2 3
As shown in FIG.
【００１２】この実施例は上記のような構成からなるの
で、フレキシブル基板１０の基板部１１を鍵盤フレーム
３上の所定の位置に配設した後、図３の（ａ）に示すよ
うに束線部１２の可断部１４を先端側から切断して展開
させ、所要の長さとなった時に可断部１４の切断を停止
して基板部１１側の束線部１２は未切断状態とする。そ
して束線部１２の先端部１２ａを接続すべき他の基板側
のコネクタに接続する。Since this embodiment has the above-described configuration, the board portion 11 of the flexible board 10 is disposed at a predetermined position on the keyboard frame 3, and then the bundled wires are connected as shown in FIG. The cutable portion 14 of the portion 12 is cut from the front end side and expanded, and when the length becomes a required length, the cut of the cutable portion 14 is stopped, and the bundled portion 12 on the substrate portion 11 side is in an uncut state. Then, the distal end portion 12a of the bundled portion 12 is connected to a connector on another substrate to be connected.
【００１３】このように、束線部１２の必要な部分だけ
を展開させることにより、その長さを自由に変化させる
ことができるので、予め可断部１４をすべて切断して展
開した図３の（ｂ）に示す状態で、束線部の長さを接続
距離最大の機種に合わせておくようにすれば、複数機種
に対してもしくは同一機種の異なる鍵域に対して一つの
フレキシブル基板をすべて共通に使用することができ
る。As described above, the length of the bundled portion 12 can be freely changed by expanding only a necessary portion of the bundled portion 12. Therefore, all the cutable portions 14 are cut in advance and expanded as shown in FIG. In the state shown in (b), if the length of the bundled portion is adjusted to the model having the largest connection distance, all of one flexible substrate can be used for a plurality of models or different key ranges of the same model. Can be used in common.
【００１４】また、束線部１２は必要な部分だけが展開
され、不要部は基板部１１と一体のままであるので、余
分の束線部が実装の邪魔になるおそれがなく、基板部と
束線部とを一体化することにより、部品点数が減少する
と共に両者の組付工数も削減されて生産性が向上する。Further, since only the necessary portion of the bundled portion 12 is unfolded and the unnecessary portion remains integral with the substrate portion 11, there is no possibility that the extra bundled portion will interfere with the mounting, and the By integrating the bundled portion, the number of parts is reduced, and the number of steps for assembling both is reduced, so that productivity is improved.
【００１５】なお、上記の実施例では束線部１２をヘア
ピン状に形成したが、その形状はそれに限るものではな
く、渦巻状等展開可能に密接して設けることのできるも
のならばいかなる形状であっても差支えない。In the above embodiment, the bundle portion 12 is formed in the shape of a hairpin. However, the shape is not limited to this. There is no problem.
【００１６】[0016]
【００１７】[0017]
【発明の効果】以上述べたように、この発明による電子
楽器の鍵盤回路基板は、基板部と束線部とを一体に形成
し、その束線部を展開可能に密接して設けたので、束線
部の一部又は全部を展開させることによりその長さを自
由に変えることが可能になる。これにより、楽器本体の
厚みが増すのを防止するため、鍵盤回路基板を鍵自由端
近傍に、メイン回路基板を鍵後方に配設せざるを得ない
電子楽器において、上記両回路基板を接続する束線部は
必須の重要な部材となる。 As described above, the electron according to the present invention is
The keyboard circuit board of the musical instrument has a board portion and a bundled portion integrally formed, and the bundled portion is provided in close contact so as to be expandable. Can be changed freely. This allows the instrument
To prevent the thickness from increasing, place the keyboard circuit board at the key free end.
In the vicinity, the main circuit board has to be arranged behind the key
In the electronic musical instrument, the bundle portion connecting the two circuit boards is
It is an essential and important component.
【００１８】この発明によれば、基板部の回路が共通で
束線部の長さだけが異なる場合には、共通の鍵盤回路基
板をすべての機種もしくは同一機種の異なるスイッチ領
域に使用することができる。また、基板部と束線部とが
一体になっているので、部品点数とそれに伴う組付工数
が減少し、共通化による管理工数の削減と相俟って生産
コストを低減させることが可能になる。 According to the present invention, when the circuit of the board portion is common and only the length of the bundle portion is different, a common keyboard circuit board is used for all models or different switch regions of the same model. Can be used for In addition, since the board and bundled parts are integrated, the number of parts and the number of assembling steps associated with them are reduced. Become.
【図１】この発明の一実施例の線幅を拡大して示す平面
図である。FIG. 1 is an enlarged plan view showing a line width according to an embodiment of the present invention.
【図２】この発明を実施した電子鍵盤楽器の鍵盤ユニッ
ト部の一部を断面で示す側面図である。FIG. 2 is a side view showing a cross section of a part of a keyboard unit of the electronic keyboard instrument embodying the present invention.
【図３】同じくその束線部の展開状態を示す説明図であ
る。FIG. 3 is an explanatory view showing an expanded state of the bundle portion.
【図４】従来の電子鍵盤楽器の鍵盤ユニット部の一例を
示す側面図である。FIG. 4 is a side view showing an example of a keyboard unit of a conventional electronic keyboard instrument.
【図５】同じくその裏面図である。FIG. 5 is a rear view of the same.
１…鍵、２…接点ラバー部材、３…鍵盤フレーム、６…
固定接点、７…可動接点部、１０…フレキシブル基板
（鍵盤回路基板）、１１…基板部、１２…束線部、１３
…配線、１４…可断部DESCRIPTION OF SYMBOLS 1 ... Key, 2 ... Contact rubber member, 3 ... Keyboard frame, 6 ...
Fixed contact, 7: movable contact, 10: flexible substrate
(Keyboard circuit board) , 11 ... board part, 12 ... bundled part, 13
... wiring, 14 ... cutable part
Claims (1)
シブル基板からなる電子楽器の鍵盤回路基板であって、
前記基板部は、少なくとも鍵対向面に、押鍵時に可動接
点の圧接により閉成される固定接点を有し、前記束線部
は、展開可能に密接して設けられ、前記基板部と他の基
板との接続部を構成することを特徴とする電子楽器の鍵
盤回路基板。1. A keyboard circuit board for an electronic musical instrument comprising a flexible board in which a board portion and a bundle portion are integrally formed,
The substrate section is movable contact with at least a key facing surface when a key is pressed.
A fixed contact that is closed by pressure welding of a point;
Is provided so as to be expandable and close to the substrate unit and other substrates.
A key for an electronic musical instrument, comprising a connection portion with a plate
Board circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4133966A JP2734880B2 (en) | 1992-05-26 | 1992-05-26 | Keyboard circuit of electronic musical instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4133966A JP2734880B2 (en) | 1992-05-26 | 1992-05-26 | Keyboard circuit of electronic musical instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05327136A JPH05327136A (en) | 1993-12-10 |
| JP2734880B2 true JP2734880B2 (en) | 1998-04-02 |
Family
ID=15117250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4133966A Expired - Fee Related JP2734880B2 (en) | 1992-05-26 | 1992-05-26 | Keyboard circuit of electronic musical instrument |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2734880B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020224204A1 (en) * | 2019-05-07 | 2020-11-12 | 得理电子(上海)有限公司 | Piano key assembly |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002027066A (en) | 2000-07-06 | 2002-01-25 | Nec Saitama Ltd | Folding portable radio equipment |
| CN101529150A (en) * | 2006-10-20 | 2009-09-09 | 株式会社康天慈 | Flexible luminescent material |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60153567U (en) * | 1984-03-24 | 1985-10-12 | 日本ビクター株式会社 | Flexible board for connection |
| JPH03198393A (en) * | 1989-12-27 | 1991-08-29 | Toshiba Corp | Circuit board device |
-
1992
- 1992-05-26 JP JP4133966A patent/JP2734880B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020224204A1 (en) * | 2019-05-07 | 2020-11-12 | 得理电子(上海)有限公司 | Piano key assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05327136A (en) | 1993-12-10 |
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