JPS599696A - Keyboard for electronic musical instrument - Google Patents

Keyboard for electronic musical instrument

Info

Publication number
JPS599696A
JPS599696A JP57119356A JP11935682A JPS599696A JP S599696 A JPS599696 A JP S599696A JP 57119356 A JP57119356 A JP 57119356A JP 11935682 A JP11935682 A JP 11935682A JP S599696 A JPS599696 A JP S599696A
Authority
JP
Japan
Prior art keywords
printed circuit
key
keyboard
pair
circuit boards
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.)
Pending
Application number
JP57119356A
Other languages
Japanese (ja)
Inventor
恵介 渡辺
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Gakki Co Ltd
Original Assignee
Nippon Gakki Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Gakki Co Ltd filed Critical Nippon Gakki Co Ltd
Priority to JP57119356A priority Critical patent/JPS599696A/en
Publication of JPS599696A publication Critical patent/JPS599696A/en
Pending legal-status Critical Current

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  • Electrophonic Musical Instruments (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 この発明は、鍵タッチ感が良好で、組立が谷易な電子楽
器の鍵盤スイッチに関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a keyboard switch for an electronic musical instrument that provides a good key touch feeling and is easy to assemble.

遊子オルガン等の電子楽器に用いられ各鍵の駆MtJJ
を検知する!!I!盤スイッチは、各−に対応して並列
配置される複数の可動接点板と、これらに対応して配設
された複数の固定接点とを備え、鍵の下方に配設される
もので、通常第1図に示すようにスイッチ部をユニット
化したものとか、第2図のスイッチ回路をプリント基板
上で処理するようにしたものが知られている。すなわち
、第1図にボす鍵盤スイッチは、基体1の一方の外l[
l111JIIに一体に延設した数本の支片1aの外端
間に若干のト下間隔をもって半行に並列する正逆両級点
2および3を固着し、さらに基体1の上面側の適官間隔
毎に多数の可動接片4の基端を埋着すると共に、その先
端を前記固定接点2.3間に挿通して一方の固定接点2
に弾接し、さらにこれらaI動接点4の先端に近い上下
両面側にアクチュエータ5を酸層固定してユニット化し
たものである。しかし、このようなユニット化によれば
鍵盤スイッチの組立作業を極めて能率よく簡易化し得る
ものの、スイッチ閉成後なおも押畦操作し続けると可動
接片4と固定接点3との接触圧が高まり、これら両者の
摩耗を早めるうえ鍵タッチ感に悪影響を及ばずばかりか
、接触圧が高いと長年使用の間に固匣接点3が曲がり、
スイッチの動作点、換言すれば発音位置を狂わせるとい
う欠点があった。
Used in electronic musical instruments such as Yuko organs, each key's drive MtJJ
Detect! ! I! A panel switch is equipped with a plurality of movable contact plates arranged in parallel corresponding to each terminal, and a plurality of fixed contacts arranged in correspondence with these, and is arranged below the key. There are known devices in which the switch section is made into a unit as shown in FIG. 1, and in which the switch circuit shown in FIG. 2 is processed on a printed circuit board. That is, the keyboard switch shown in FIG.
Between the outer ends of several branch pieces 1a integrally extended to l111JII, both normal and reverse scale points 2 and 3, which are parallel to each other in a half line with a slight distance between them, are fixed. The base ends of a large number of movable contact pieces 4 are embedded at intervals, and the tips thereof are inserted between the fixed contacts 2 and 3 to connect one of the fixed contacts 2.
The actuator 5 is fixed with an acid layer on both upper and lower surfaces near the tips of these aI movable contacts 4 to form a unit. However, although such unitization makes it possible to extremely efficiently and simplify the assembly work of the keyboard switch, the contact pressure between the movable contact piece 4 and the fixed contact 3 will increase if the ridge operation is continued even after the switch is closed. Not only does this accelerate the wear of both of them and has a negative effect on the key touch feeling, but if the contact pressure is high, the solid case contact 3 may bend over many years of use.
This had the disadvantage that the operating point of the switch, in other words, the position of sound generation, was disturbed.

一方、第2図に示す鍵盤スイッチは、スイッチ回路を形
成してなるプリント基板10上に軟質弾性月料からなる
略椀状のキースイッチカバー9を伏せた秋題で配設し、
このカバー9の内部に導体12を設けると共にこの導体
12に対応して一対の地??i13をプリント基板10
上に設け、押鍵操作時に前記カバー9が鍵11のアクチ
ュエータ14によって押しヒ変形されることにより、前
記導体12を銅箔13に接触させるようにしたものであ
る。
On the other hand, the keyboard switch shown in FIG. 2 has a substantially bowl-shaped key switch cover 9 made of soft elastic material placed on a printed circuit board 10 on which a switch circuit is formed.
A conductor 12 is provided inside the cover 9, and a pair of ground electrodes are provided corresponding to the conductor 12. ? i13 to printed circuit board 10
When the cover 9 is pressed and deformed by the actuator 14 of the key 11 when the key is pressed, the conductor 12 is brought into contact with the copper foil 13.

しかし、この上うなものVCおいてもキースイッチカバ
ー9を便用しているため、前述した従来構造と同様スイ
ッチ閉成後の抑圧によって鍵タッチ感が悪くなるという
欠点を有している。
However, since the key switch cover 9 is also conveniently used in this type of VC, it has the disadvantage that the key touch feeling is deteriorated due to the suppression after the switch is closed, similar to the conventional structure described above.

この発明は上述したまうな従来の欠点に鑑みてなされた
もので、少なくとも一方に複数の固定接点が設けられた
上下一対のプリント基板と、これらプリント基板間に配
置される複数の可動接点板の一端金ホルダによって共通
に保持してユニット化し、各可動接点板の自由端部を鍵
のアクチュエータで抑圧変形させることにより、良好な
鍵タッチ感が得られ、祉た組立作業性並びに防塵効34
!:を向上させるようにした電子榮器の鍵盤スイッチを
提供するものである。
This invention was made in view of the above-mentioned drawbacks of the conventional art, and consists of a pair of upper and lower printed circuit boards each having a plurality of fixed contacts on at least one side, and a plurality of movable contact plates disposed between these printed circuit boards. One end of the movable contact plate is held in common by a metal holder to form a unit, and the free end of each movable contact plate is compressed and deformed by the key's actuator. This provides a good key touch feeling, improves assembly workability, and improves dustproof performance.
! The present invention provides a keyboard switch for an electronic display device that improves the performance.

以下、この発明を図面に示す実施例に基づいて旺細に説
明する。
Hereinafter, this invention will be described in detail based on embodiments shown in the drawings.

第3図はこの発明に係る鍵盤スイッチを備えた鍵盤部の
一部破断側面図、第4図は同スイッチの一部を省略して
示す分解斜視図である。これらの図において、30は合
成樹ノ財で一体に形成された謎で、この鍵30は裏面側
をくり抜くような状態で形成されることによシ断曲形状
が略コ字状を呈し、後端部下面には鍵盤フレーム31に
穿設された押通孔32の前縁に保合することにより該鍵
30の回動支点部を構成する保合口部33が形成されて
いる。一方鍵30の前端寄り上聞には略鉤形のストッパ
34が一体に設けられており、このストッパ34の後方
に向って延在する下端部34aは前記M盤フレーム31
の前面部31aに設けられた透孔35に一ヒ下移動自在
に係入され、これによって鍵30の上下方向の回動角度
をfl、 f171J している。そして、前Bピスト
ソバ34の後方には下端部が鍵盤フレーム31の上面に
穿設された孔38に係入し鍵30の左右方向の回動を規
制する鍵ガイド36と、後述する鍵盤スイッチ45を開
閉制御するアクチュエータ3775噛II記鍵30の内
底面よシ一体にi(「設ざtlている。このアクチュエ
ータ37の基部iLI++背面には鍵30に常時時計方
向の復#習性を付与する。伏帰用げね39の一端を係止
する係止用i〃40が設けられ、下端部は前記鍵盤フレ
ーム31の上面に羽り設された透孔41を貫通して該フ
レーム31の下)5に延在している。前記復帰用ばね3
9d、適宜な板厚の金属板を打抜いて形成され、その他
端が鍵盤フレーム31の一ヒ面に設けられたばね係止部
43によって保市されることにより、図に示す如く座h
H変形し、この座屈変形によって生ずる反力によシ況3
0に復帰力を与えると同時に鍵30の係合凹部33を押
通孔32の前縁に圧接している。したがって、鍵30は
通常ストツバ34の先端部上面が透孔35の上縁に当接
することにより水平に保持される。
FIG. 3 is a partially cutaway side view of a keyboard section equipped with a keyboard switch according to the present invention, and FIG. 4 is an exploded perspective view showing the switch with some parts omitted. In these figures, 30 is a key made of synthetic wood, and the key 30 is formed by hollowing out the back side, so that the bent shape of the key 30 is approximately U-shaped. A retaining opening 33 is formed on the lower surface of the rear end and constitutes a pivot point for the key 30 by being engaged with the front edge of a push-through hole 32 formed in the keyboard frame 31. On the other hand, a substantially hook-shaped stopper 34 is integrally provided on the upper part of the front end of the key 30, and a lower end 34a extending toward the rear of the stopper 34 is connected to the M board frame 31.
The key 30 is fitted into a through hole 35 provided in the front face 31a of the key 30 so as to be movable downward, thereby changing the vertical rotation angle of the key 30 to fl, f171J. At the rear of the front B piston buckle 34, there is a key guide 36 whose lower end engages in a hole 38 formed on the upper surface of the keyboard frame 31 to restrict the left and right rotation of the key 30, and a keyboard switch 45 which will be described later. An actuator 3775 is provided integrally with the inner bottom surface of the key 30 to control opening/closing.The base of the actuator 37 is provided with a constant clockwise reciprocity on the rear surface of the actuator 37. A locking pin 40 is provided for locking one end of the lowering barb 39, the lower end of which passes through a through hole 41 provided on the upper surface of the keyboard frame 31 (below the frame 31). 5. The return spring 3
9d, it is formed by punching out a metal plate of an appropriate thickness, and the other end is secured by a spring locking part 43 provided on one surface of the keyboard frame 31, so that the seat h is secured as shown in the figure.
Situation 3 due to the reaction force generated by this buckling deformation.
At the same time, the engagement recess 33 of the key 30 is pressed against the front edge of the push-through hole 32. Therefore, the key 30 is normally held horizontally by the top surface of the tip of the stopper 34 coming into contact with the upper edge of the through hole 35 .

前記鍵盤スイッチ45はそJLぞ、tlの鍵3oに対し
て共通に延在する如く前記鍵盤フレーム31の下面略中
央部に配設されるもので、上下一対のプリント基板50
,51、これらプリント基板50.51の短辺側両端部
を保持する一対のホルX’52,53、前記プリント基
板50.51間に介在された複数の可動接点板54から
なる可動接点板7J % Nf7 nt4ノ°リント基
板50.51の相対向する101にぞ、11て′れ設け
られた複数の固定接点55.56からなる固定接点群等
によって構成されている。
The keyboard switch 45 is disposed approximately in the center of the lower surface of the keyboard frame 31 so as to extend in common with the keys 3o of JL and TL, and is connected to a pair of upper and lower printed circuit boards 50.
, 51, a pair of holes X'52, 53 that hold both short side ends of these printed circuit boards 50.51, and a movable contact plate 7J consisting of a plurality of movable contact plates 54 interposed between the printed circuit boards 50.51. % Nf7 nt4 It is constituted by a fixed contact group consisting of a plurality of fixed contacts 55, 56 provided on opposite sides 101 of the lint board 50, 51, with 11 sides apart.

前記一対のプリント基板50.51は第5図に示すよう
に一枚の細長いプリント基板6oをその中央部に穿設で
れたミシン孔61に宿って(ν)断分離した分割基板に
よって描成さノしるもので、この切断に先立って両基板
50.51が畑数本のジャンパーリード線62によって
′1ぽ気的および、哉械的に接続される。そして、各プ
リント基板50.51の後端縁でかつ切断側とは反対側
の端部にはコネクタ接続用の取付部63a 、 63b
がそれぞれ一体に設けられ、複数個のピン挿通孔64を
有している。そして、これらのピン挿通孔64には第6
図に示すように害電膜65が施され、かつコネクタ67
の各ピン68が挿通されている。上側のプリント基板5
0に設けられる複数の固定接点55は谷鍵30に対応し
て該基板50の長手方向に並列配置され、その直下には
第6図に示すように前後一対のスペーサ57a+57b
の下向に前後端部が固着されたポリニスデル等のフィル
ム58が僅かな間隔を保って配設されている。そして、
このフィルム58の上面には谷固矩接点55に対応して
複数の電極TOが印刷法によって設けられている。
As shown in FIG. 5, the pair of printed circuit boards 50 and 51 are formed by dividing a long and thin printed circuit board 6o into a perforated hole 61 drilled in the center thereof (v). As a result, prior to this cutting, both boards 50 and 51 are electrically and mechanically connected by several jumper lead wires 62. Attachment portions 63a and 63b for connecting connectors are provided at the rear edge of each printed circuit board 50, 51 and at the end opposite to the cutting side.
are provided integrally with each other, and have a plurality of pin insertion holes 64. A sixth pin insertion hole 64 is provided in these pin insertion holes 64.
As shown in the figure, a harmful electrical film 65 is applied and a connector 67
Each pin 68 of is inserted. Upper printed circuit board 5
A plurality of fixed contacts 55 provided on the board 50 are arranged in parallel in the longitudinal direction of the board 50 corresponding to the valley keys 30, and directly below them are a pair of front and rear spacers 57a+57b as shown in FIG.
A film 58 made of polynisdel, etc., whose front and rear ends are fixed downwardly, is disposed at a slight interval. and,
A plurality of electrodes TO are provided on the upper surface of this film 58 by a printing method, corresponding to the Tanigo rectangular contacts 55.

同様に下側のプリント基板51に設けられる固定接点5
6も各鍵30に対応して並列配置されることにより、前
記上側プリント基板50の各固定44点55と対向し、
その上方にはフーfルム71が6〈固定接点56と僅か
な間隔を保つように一対のスペーサ72a 、 72b
を介して配設されている。このフィルム71の下面には
各固だ接点56に対応して複数の電極73が印刷形成さ
れている。
Fixed contacts 5 similarly provided on the lower printed circuit board 51
6 are also arranged in parallel corresponding to each key 30 to face each of the 44 fixing points 55 of the upper printed circuit board 50,
Above it, a frame 71 is mounted with a pair of spacers 72a and 72b so as to maintain a small distance from the fixed contact 56.
It is arranged through. A plurality of electrodes 73 are printed on the lower surface of the film 71, corresponding to each solid contact 56.

前記一対のホルダ52.53のりも後方に配置されるホ
ルダ52は成形時に前記M数個の可動接点板54と一体
に形成されることにより、これら接点板54を片持支持
しており、その前曲側上下端部には前記プリント基板s
o、siの板厚とほぼ等しい嵌合溝76.77が該ホル
ダ52の全長に亘って平行に形成されている。徒だ、ホ
ルダ52の前[m側内端部にはホルダ固定用のねじ取付
g7’8が一体に突設されている。一方、jJIJ方側
のホルダ53は後方側ホルダ52と同一長さで、ての長
子方向には谷fi30に対応する複数個の矩形開1−1
部I9が並設され、また背−+u1には前記後方側ホル
ダ52の低合溝76 、 r7に対応し一04’i’一
対の嵌合溝ao、aiが形成されると共にWit記ねし
取付部78に係合するねじ取付部82が一体に突設され
ている。したがって、上−ド一対のプリント基板50.
51はイの前板端部が谷ホルダ52,53の低合溝76
゜77.80.81に嵌入されることにより、平行に所
定間隔離間した状態で保持され、かつ前ytねじ取付部
78,82にねじ込1れる止めねじ83(第3図参照)
によってプリント基板50.51とホルダ52.53と
が一体的に結合され、鍵盤フレーム31の裏面所定位1
aに固定される。
The pair of holders 52 and 53 are arranged at the rear, and the holder 52 is formed integrally with the M number of movable contact plates 54 during molding, thereby cantilever-supporting these contact plates 54. The printed circuit board s is attached to the upper and lower ends of the front curved side.
Fitting grooves 76 and 77, which are approximately equal in thickness to the plate thicknesses o and si, are formed in parallel over the entire length of the holder 52. Unfortunately, a screw mounting g7'8 for fixing the holder is integrally protruded from the inner end of the front [m side] of the holder 52. On the other hand, the holder 53 on the jJIJ side has the same length as the rear holder 52, and has a plurality of rectangular openings 1-1 corresponding to the valley fi30 in the longitudinal direction.
A pair of fitting grooves ao and ai corresponding to the lower fitting grooves 76 and r7 of the rear side holder 52 are formed on the back +u1, and a pair of fitting grooves ao and ai are formed in the back side holder 52. A screw attachment portion 82 that engages with the attachment portion 78 is integrally provided in a protruding manner. Therefore, the upper pair of printed circuit boards 50.
51, the front plate end of A is the low matching groove 76 of the valley holder 52, 53.
゜77.80.81, the setscrews 83 are held parallel to each other with a predetermined distance apart, and are screwed into the front yt screw mounting portions 78, 82 (see Fig. 3).
The printed circuit board 50.51 and the holder 52.53 are integrally connected, and the back surface of the keyboard frame 31 is placed at a predetermined position 1.
It is fixed at a.

m Hr2複数個のi=J動接動板点板54鍵3oに対
応してボルダ52の長手方向に並列配置され、その基部
54afll!Iが前方に向って水平に延仕し、自由端
Q1i 54 bが十力に適宜角度折り曲げられて前方
側ホルダ53の各回1」部79を貫通し、その突出端部
が谷誹30のアクテュエータ37の下面に通常圧接さJ
L、−Cいる。また谷司動接点板54の基部54aと自
由端部54bの連設部には各プリント基板52゜53の
固定接点55.56に対応して導電性ゴム等からなる押
圧片84が同項゛さ!し、−その上i1]Jで上側プリ
ント基板50のフィルム5B(第6図参照)を−ト方か
ら押圧している。したがって、この状態にj・・いて、
フィルム58の表面に設けられた各導体70力敷・J応
する固2を接点55にそれぞれ接触し、常閉スイッチを
構成している。
m Hr2 A plurality of i=J movable contact plates 54 are arranged in parallel in the longitudinal direction of the boulder 52 corresponding to the keys 3o, and the base 54afll! I extends horizontally toward the front, and the free end Q1i 54 b is bent at an appropriate angle to pass through each turn 1'' portion 79 of the front side holder 53, and its protruding end connects to the actuator of the valley 30. Normally pressed against the bottom surface of 37 J
There are L and -C. Further, in the connecting portion between the base 54a and the free end 54b of the valley drive contact plate 54, there are pressing pieces 84 made of conductive rubber or the like corresponding to the fixed contacts 55 and 56 of each printed circuit board 52 and 53. difference! Then, the film 5B (see FIG. 6) of the upper printed circuit board 50 is pressed from the -T direction by -i1]J. Therefore, in this state,
Each conductor 70 provided on the surface of the film 58 is brought into contact with the contact 55 to form a normally closed switch.

この上°)な44成において、成るVI13Oを押鍵操
作すると、該鍵30は挿通孔33の前縁を回動支点とし
て反時旧゛方向に回動降下するため、アクチュエータ3
Tも一体に降下して当該鍵3oに対応する可動接点板5
4の自由端部54bを押し]・ける。
When the key 30 is pressed in the above 44 configuration, the key 30 rotates downward in the counterclockwise direction using the front edge of the insertion hole 33 as a rotation fulcrum, so that the actuator 3
The movable contact plate 5 corresponding to the key 3o is also lowered together with T.
Push the free end 54b of 4].

この結果、抑圧片84が上11(IJのフィルム58か
ら離間して導体70を固犀接点55がら離反きせ、畦3
0を最下位Mtで押し下げ/(時1.押圧片84の下口
J1が下側のフィルム71台押圧し、該フィルム71の
裏面に設けらJ′Lでいる当該しく13oに対比、[〜
た導体73を固定接点56に接触させる。すなわち、固
建接点56、−と導体73は常開スイッチを構成するも
ので、上述し−7だ通り鍵30の押i!l!操作に伴っ
て閉成されることにより、当該’M30に対応した楽廿
を電気的に発生さ♂る」二うにILす路構成されている
。この場合、!Q!I述の常閉スイッチと常開ス・rツ
チの開閉時間差を測定することにより、打鍵速度、タッ
チレスポンス等を検出することができる。
As a result, the suppressing piece 84 separates from the top 11 (IJ film 58 and separates the conductor 70 from the solid contact 55, causing the ridge 3
0 is pressed down at the lowest Mt/(When 1. The lower opening J1 of the pressing piece 84 presses the lower film 71, and compared to the corresponding mechanism 13o provided on the back surface of the film 71 at J'L, [~
The conductor 73 is brought into contact with the fixed contact 56. That is, the fixed contacts 56, - and the conductor 73 constitute a normally open switch, and as mentioned above, when the key 30 is pressed i! l! It is configured to have two IL paths that, when closed in response to an operation, electrically generate a musical tone corresponding to the M30. in this case,! Q! By measuring the difference in opening/closing time between the normally closed switch and the normally open switch described in I above, keystroke speed, touch response, etc. can be detected.

かくして、このような構成が、らなる畦盛スイッチ45
によれば、それぞれ谷鍵3oにメ寸応する幀舷の固冗接
点55.56を設けてなる一対のプリントノ、(・板5
0,51と、これらプリント基板sj、s1を保持する
一対のホルダ52.53と、ホルダ52に一体的に設け
られ各鍵30に対応する複数の可!lIJ接点板54と
ケ一体的に4iI:合してユニット化しているので、鍵
盤ンし・−ム31への取付は作業がイ・兇、v)てr、
?1単で、組立作業に妄する時間を大幅に短靴すること
ができる。)1罠、肴可励接点板54をパ4’S ij
、rL、その自由11品部541〕をアクチュエータ3
1−C坤゛]Jσじるように構成しているので、良好な
鍵タッチ感が1.4られ、しかも固定接点55 、56
をフィルム58.71でそれぞれ・保映し、可動接点&
54ケ上1・−対のプリント基板50 、51で保睦−
Jる相好になるlこ1す、防ム幼米7.・・大で、埃等
の付宥(ごよるJ灸続小艮を防止しイ)Jる。
In this way, such a configuration can be used as the ridged switch 45.
According to Plate 5, a pair of printed boards are provided with fixed and redundant contacts 55 and 56 on the broadside, each corresponding in size to the valley key 3o.
0, 51, a pair of holders 52, 53 that hold these printed circuit boards sj, s1, and a plurality of keys 52, 53 that are integrally provided in the holder 52 and correspond to each key 30! Since the contact plate 54 and the IJ are integrated into a unit, installation to the keyboard 31 is easy.
? With just one piece, you can save a lot of time wasting time on assembly work. ) 1 trap, set the excitation contact plate 54 to 4'S ij
, rL, its free 11 parts part 541] to actuator 3
1-C 坤゛] Jσ is configured so that a good key touch feeling is achieved by 1.4, and the fixed contacts 55 and 56
are respectively reflected on film 58 and 71, and the movable contacts &
54 pcs. 1 - Pair of printed circuit boards 50 and 51 for protection.
I'm going to get along with you, and I'm going to be a young rice 7.・・It is large enough to remove dust, etc.

第7 L、J+−、J、この兄t)jの他の実施例を示
す断面図、弔810は下側プリント基板の要部平面図で
ある。
7th L, J+-, J, This older brother t) A cross-sectional view showing another embodiment of j, 810 is a plan view of the main part of the lower printed circuit board.

この実施例は下側のプリント基板51の上面に複重の1
.1ノI耀接点1旧を並設し、可動接点板54の基部山
1j端部102釦下δ111プリント基板510表面に
設けた導電体103に常時接触させて、抑圧片84と前
記固定接点1旧とで常開スイッチを構成したものである
。この場合、上側のプリント基板50は電気的作用を有
さす、単に非押鍵時の可動接点板54の並びを揃えるの
に使用される。したがって、上下のプリント基板50.
51は上記実施例のようにジャンパーリード線で接続さ
れず、単に一対のホルダ52.53によって保持される
In this embodiment, there is a double layer on the upper surface of the lower printed circuit board 51.
.. The contacts 1 and 1 are arranged in parallel, and are always in contact with the conductor 103 provided on the surface of the printed circuit board 510 at the end 102 of the base peak 1j of the movable contact plate 54, and the suppressing piece 84 and the fixed contact 1 This is a normally open switch with the old one. In this case, the upper printed circuit board 50 has an electrical function and is simply used to align the movable contact plates 54 when the key is not pressed. Therefore, the upper and lower printed circuit boards 50.
51 is not connected with a jumper lead wire as in the above embodiment, but is simply held by a pair of holders 52 and 53.

このような’ft’l成においても上記実施例と同様の
効果が得られることは明らかであろう。
It is clear that the same effects as in the above embodiment can be obtained in such a 'ft'l configuration.

以ヒ説明したようにこの発明に係る電子栗器の鍵盤スイ
ッチは、上−F一対のプリント基板と、これらプリント
基板間に介在された可動接点板とをホルダで一体的に保
持してユニット化したので、組立作業が極めて容易で、
能率よく行うことができる。また、可動接点4反の自由
端部が鍵のアクテュエータで押下されるため、鍵タッチ
感が良好で、プリント基板に設けられる固定接点、前記
可動接点板等の防塵効果も大であるなど、その効果は非
常に大である。
As explained below, the electronic chestnut machine keyboard switch according to the present invention is formed into a unit by integrally holding the pair of upper and F printed circuit boards and the movable contact plate interposed between these printed circuit boards with a holder. Therefore, assembly work is extremely easy,
Can be done efficiently. In addition, since the free ends of the four movable contacts are pressed down by the key's actuator, the touch of the key is good, and the fixed contacts provided on the printed circuit board and the movable contact plate are highly dust-proof. The effect is very large.

【図面の簡単な説明】[Brief explanation of drawings]

第1図(a)、(1))は従来の鍵盤スイッチの一例を
示す平1111図およびA−A線断面図。 第21/1は同じく従来の鍵盤スイッチの油の例を示す
佃断向図り。 第:1図はこの発明に係る鍵盤スイッチを備えた鍵盤部
の一部破断側面図。 第4図d回スイツナの一部11116分解斜悦図。 rr> 5図1、分割前におけろプリント基板の平面図
。 第6図はプリント基板の要部拡大断面図。 第7図はこの発明の他の実施列を示す断面図。 第8図は下(1!IIプリント基板の要部平面図である
。 30・・・・鍵、31−・・・鍵盤フレーム、37・・
・Φアクチュエータ、450′・・・鍵盤スイッチ、5
0.51・・・・プリント基4m、52゜53  ・・
・・ボルタ、54・・・・可動接点板、54b・・・・
自由端部、55,56,101・・・・固定接点、84
・・・・押圧片、。
FIGS. 1(a) and 1(1)) are a 1111-level view and a sectional view taken along the line A-A, showing an example of a conventional keyboard switch. No. 21/1 is also a diagram showing an example of conventional keyboard switch oil. Fig. 1 is a partially cutaway side view of a keyboard section equipped with a keyboard switch according to the present invention. Fig. 4 11116 exploded perspective view of a part of the d-time Suitsuna. rr> 5 Figure 1 is a plan view of the printed circuit board before division. FIG. 6 is an enlarged sectional view of the main parts of the printed circuit board. FIG. 7 is a sectional view showing another embodiment of the invention. Figure 8 is a plan view of the main parts of the lower (1!II) printed circuit board. 30...Key, 31-...Keyboard frame, 37...
・Φ actuator, 450'...keyboard switch, 5
0.51...Print base 4m, 52゜53...
... Volta, 54... Movable contact plate, 54b...
Free end, 55, 56, 101...Fixed contact, 84
...Press piece.

Claims (1)

【特許請求の範囲】[Claims] 対向する一対のプリント基板と、これらプリント基板の
互いに対向する[!]′iの少なくとも一方に設けられ
た谷鍵に対応するり数の固定接点と、前記−幻のプリン
ト基板間に配設された/4鍵に対応する複数のuJ’動
接動板点板備え、前記一対のプリント基板および可動接
点板はホルダに共通に保持されて鍵盤フレームに配設さ
れ、各町lIh接点板の自由端部が対応する鍵の押鍵操
作時に当該畦のアクチュエータによって押下されるXこ
とを特徴とする電子楽器の′Jj!盤スイッチ。
A pair of printed circuit boards facing each other, and a pair of printed circuit boards facing each other [! ]'i fixed contacts corresponding to the valley keys provided on at least one side, and a plurality of uJ' movable contact plates corresponding to the /4 keys disposed between the above-mentioned and phantom printed circuit boards. The pair of printed circuit boards and the movable contact plate are held in common by a holder and arranged on the keyboard frame, and the free end of each contact plate is pressed down by the actuator of the corresponding ridge when the corresponding key is pressed. 'Jj!' is an electronic musical instrument that is characterized by board switch.
JP57119356A 1982-07-09 1982-07-09 Keyboard for electronic musical instrument Pending JPS599696A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57119356A JPS599696A (en) 1982-07-09 1982-07-09 Keyboard for electronic musical instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57119356A JPS599696A (en) 1982-07-09 1982-07-09 Keyboard for electronic musical instrument

Publications (1)

Publication Number Publication Date
JPS599696A true JPS599696A (en) 1984-01-19

Family

ID=14759458

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57119356A Pending JPS599696A (en) 1982-07-09 1982-07-09 Keyboard for electronic musical instrument

Country Status (1)

Country Link
JP (1) JPS599696A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61166355U (en) * 1985-03-30 1986-10-15
JPS62170996U (en) * 1986-04-22 1987-10-29
US9105835B2 (en) 2010-12-10 2015-08-11 Mitsubishi Electric Corporation Air-coupled ultrasonic sensor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5921432U (en) * 1982-07-31 1984-02-09 松下電工株式会社 ventilation hood

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5921432U (en) * 1982-07-31 1984-02-09 松下電工株式会社 ventilation hood

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61166355U (en) * 1985-03-30 1986-10-15
JPS62170996U (en) * 1986-04-22 1987-10-29
US9105835B2 (en) 2010-12-10 2015-08-11 Mitsubishi Electric Corporation Air-coupled ultrasonic sensor

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