JPH05323952A - Key guide structure of keyboard device - Google Patents
Key guide structure of keyboard deviceInfo
- Publication number
- JPH05323952A JPH05323952A JP4132759A JP13275992A JPH05323952A JP H05323952 A JPH05323952 A JP H05323952A JP 4132759 A JP4132759 A JP 4132759A JP 13275992 A JP13275992 A JP 13275992A JP H05323952 A JPH05323952 A JP H05323952A
- Authority
- JP
- Japan
- Prior art keywords
- key
- key guide
- keyboard
- lubricant
- arm
- 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
Links
Landscapes
- Push-Button Switches (AREA)
- Electrophonic Musical Instruments (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】この発明は、鍵と鍵盤フレームと
の間に鍵の横振れを防止する鍵ガイド部を設けた鍵盤楽
器の鍵ガイド構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a key guide structure for a keyboard instrument having a key guide portion for preventing lateral vibration of the key between the key and the keyboard frame.
【0002】[0002]
【従来の技術】従来、この種の鍵盤楽器の鍵ガイド構造
としては、白鍵と黒鍵からなる多数の鍵を搖動自在に支
持する鍵盤フレームに切起し加工により鍵ガイド片を各
鍵毎に複数個形成し、この鍵ガイド片の外周部にアウト
サート加工により塩化ビニル等の軟質の樹脂部を被着し
て鍵ガイド部を構成し、この鍵ガイド部の両側面に断面
コの字状の鍵の両側壁の内壁面を接触させるようにする
のが普通である。2. Description of the Related Art Conventionally, as a key guide structure for this type of keyboard instrument, a key frame is formed by cutting and raising a key frame for each key to support a large number of white and black keys in a swingable manner. Multiple parts are formed on the outer circumference of the key guide piece, and a soft resin part such as vinyl chloride is applied to the outer peripheral part of the key guide part to form the key guide part. It is common to contact the inner wall surfaces of both side walls of the key.
【0003】また、鍵ガイド片に別部品からなる軟質の
被着部材を被着するようにしたものや、鍵盤フレームが
樹脂成形品である場合には鍵ガイド部を一体成形したも
のもある。Further, there are a key guide piece to which a soft adherend member, which is a separate component, is adhered, and a key guide portion integrally formed when the keyboard frame is a resin molded product.
【0004】そして、これらの鍵ガイド構造において、
ほとんどの場合、鍵搖動時の円滑な動きを確保すると共
に、鍵ガイド部との摩擦音や当接音の発生を防止するた
めに、鍵内壁面と鍵ガイド部との間にグリス等の潤滑剤
が塗布されていた。Then, in these key guide structures,
In most cases, a lubricant such as grease is applied between the inner wall surface of the key and the key guide to ensure smooth movement during key swing and to prevent the generation of frictional noise and contact noise with the key guide. Was applied.
【0005】[0005]
【発明が解決しようとする課題】しかしながら、このよ
うな従来の鍵盤装置の鍵ガイド構造にあっては、鍵の弾
き込みにつれて、鍵ガイド部に付着していた潤滑剤が鍵
側壁下面のエッジによりこすり取られ、鍵の動きに円滑
性を欠いて摺動音が発生するようになる。同時に鍵内壁
面と鍵ガイド部が直接触れ合うようになり、鍵を斜め方
向に押圧すると、両者の間隙が0.1〜0.2mm程度であ
ってもカチ,カチという耳障りな当接音が発生する。However, in such a key guide structure for a conventional keyboard device, as the key is pushed in, the lubricant that has adhered to the key guide portion is removed by the edge of the lower surface of the key side wall. If the key is scraped off, the movement of the key lacks smoothness and a sliding noise is generated. At the same time, the inner wall surface of the key comes into direct contact with the key guide part, and when the key is pressed in an oblique direction, an annoying contact noise is generated even if the gap between them is about 0.1 to 0.2 mm. To do.
【0006】また、鍵ガイド部の軟質樹脂部内にグリス
が浸透し、温度差によってその体積が変化して摺動性が
変化したり、鍵ガイド部に塗布されたグリスに塵埃が付
着して摺動性が変化したりして、鍵の動きが重くなり、
さらに、生産工程におけるグリス塗布量のばらつき等に
よって各鍵の押鍵力に差が出る等という問題点もあっ
た。Further, the grease permeates into the soft resin portion of the key guide portion, the volume changes due to the temperature difference, and the slidability changes, or dust adheres to the grease applied to the key guide portion and slides. The movement of the key changes, the movement of the key becomes heavy,
Further, there is a problem that the key pressing force of each key varies due to variations in the amount of grease applied in the production process.
【0007】なお、このような問題点を解決するため、
鍵ガイド部を自己潤滑性のポリ4弗化エチレン等の弗素
樹脂材により形成してグリスを不要にする方法もある
が、材料費が嵩むだけでなく、アウトサート材として成
形することが難しいので、別部品として加工した後鍵盤
フレームの鍵ガイド片に取り付けなくてはならず、組立
工数が増加して生産コストがより一層上昇するという問
題点がある。In order to solve such a problem,
There is also a method in which the key guide portion is formed of a self-lubricating fluororesin material such as polytetrafluoroethylene to eliminate the need for grease, but this not only increases the material cost but also makes it difficult to form it as an outsert material. However, it has to be mounted on the key guide piece of the keyboard frame after being processed as a separate part, which causes a problem that the number of assembling steps increases and the production cost further increases.
【0008】この発明は上記の点に鑑みてなされたもの
であり、潤滑剤なしで消音効果を得ることのできる鍵盤
装置の鍵ガイド構造を提供することを目的とする。The present invention has been made in view of the above points, and it is an object of the present invention to provide a key guide structure of a keyboard device which can obtain a sound deadening effect without a lubricant.
【0009】[0009]
【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、複数の鍵と、これらの鍵を支持する鍵盤
フレームと、この鍵盤フレームに設けられた鍵ガイド部
とからなる鍵盤装置の鍵ガイド構造において、上記鍵ガ
イド部が、上記鍵盤フレームに設けられた鍵ガイド片
と、この鍵ガイド片にアウトサート成形され自己潤滑性
で低摩擦の弾性を有する被着部材とからなり、この被着
部材が、上記鍵ガイド片に被着される基幹部と、この基
幹部から枝分れし、自由端部が上記鍵に当接可能な腕部
とからなる鍵盤装置の鍵ガイド構造を提供するものであ
る。In order to achieve the above-mentioned object, the present invention is a keyboard device comprising a plurality of keys, a keyboard frame supporting these keys, and a key guide portion provided on the keyboard frame. In the key guide structure of the above, the key guide portion is composed of a key guide piece provided on the keyboard frame and an adherend member outsert-molded on the key guide piece and having self-lubricating and low-friction elasticity. The key guide structure of the keyboard device, in which the adhered member includes a base portion that is attached to the key guide piece, and an arm portion that branches from the base portion and a free end portion of which can contact the key. Is provided.
【0010】[0010]
【作用】この発明による鍵盤装置の鍵ガイド構造は上記
のように構成することにより、鍵ガイド部にアウトサー
ト成形した被着部材は、グリス等の潤滑剤の助けを借り
ることなく鍵搖動時の円滑性が持続され、摩擦音や当接
音の発生を有効に防止することができる。By configuring the key guide structure of the keyboard device according to the present invention as described above, the adherend member outsert-molded on the key guide portion can be used when the key is swung without the aid of a lubricant such as grease. The smoothness is maintained, and the generation of frictional noise and contact noise can be effectively prevented.
【0011】[0011]
【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。図1はこの発明の一実施例を示す正面
図、図2はこの発明を実施した鍵盤装置の概略構成を示
す側面図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be specifically described below with reference to the drawings. 1 is a front view showing an embodiment of the present invention, and FIG. 2 is a side view showing a schematic configuration of a keyboard device embodying the present invention.
【0012】まず、図2を参照して鍵盤装置全体の構成
を簡単に説明する。断面形状がコの字状で下面が開放さ
れた鍵1は、樹脂材等により一体に成形され、その後部
に上下及び左右に可撓性を有する自在ヒンジ部1aを有
し、その後端部を鍵盤フレーム2に固設して、上下左右
に搖動可能に支持されている。First, the overall construction of the keyboard device will be briefly described with reference to FIG. A key 1 having a U-shaped cross section and an open lower surface is integrally formed of a resin material or the like, has a flexible hinge portion 1a having flexibility in the vertical and horizontal directions at its rear portion, and has its rear end portion It is fixed to the keyboard frame 2 and is supported so that it can swing vertically and horizontally.
【0013】鍵盤フレーム2には各鍵1に対応して同数
の鍵ガイド片2aが切起し成形され、この鍵ガイド片2
aの外周部に後述する被着部材11がアウトサート成形
されて鍵ガイド部10を構成し、この鍵ガイド部10の
側面により鍵1の両側壁1c,1cの内壁面をガイドす
るようにして鍵1の横振れを防止している。Corresponding to each key 1, the same number of key guide pieces 2a are cut and raised in the keyboard frame 2, and the key guide pieces 2 are formed.
The adherend 11 to be described later is outsert-molded on the outer peripheral portion of a to form the key guide portion 10, and the side surfaces of the key guide portion 10 guide the inner wall surfaces of both side walls 1c and 1c of the key 1. The horizontal shake of the key 1 is prevented.
【0014】また、鍵盤フレーム2上には非導通の固定
接点を形成したプリント基板3が固着され、押鍵時鍵1
のアクチュエータ1bにより押圧される周知の接点ラバ
ー部材4を介して上記固定接点を閉成させるようにして
各鍵に対応した楽音を電気的に発生させる。Further, a printed circuit board 3 having fixed non-conductive contacts is fixed on the keyboard frame 2, and when the key is pressed, the key 1 is pressed.
The fixed contact is closed through the well-known contact rubber member 4 which is pressed by the actuator 1b to electrically generate a musical sound corresponding to each key.
【0015】鍵ガイド部10の外層を形成する被着部材
11は、図1に示すように、鍵盤フレーム2の鍵ガイド
片2aにアウトサート成形され、中央に鍵ガイド片2a
に被着される基幹部11aを備えたH字状をなし、両側
に基幹部11aから枝分れした上下4本の腕部11bを
形成してその自由端外側にそれぞれ突部11cを形成
し、各突部11cと鍵1の両側壁1c,1cの内面との
間に常態で0.1〜0.2mm程度の間隙を設ける。The adherend 11 forming the outer layer of the key guide portion 10 is outsert-molded on the key guide piece 2a of the keyboard frame 2 as shown in FIG.
It has an H-shape with a trunk portion 11a attached to, and has upper and lower four arm portions 11b branched from the trunk portion 11a on both sides, and a protrusion 11c is formed on the outside of each free end thereof. Normally, a gap of about 0.1 to 0.2 mm is provided between each protrusion 11c and the inner surfaces of the side walls 1c, 1c of the key 1.
【0016】なお、この被着部材11の材料としては、
高価な弗素系の樹脂に代えて、例えばポリアセタールや
高分子ポリエチレンのような安価な樹脂を用いる。これ
らの材料は、いずれも摺動摩擦係数が低く、衝撃や繰り
返し曲げに対する強さにも優れ、アウトサートの成形性
も良好であって、自己潤滑性を有するので、グリス等の
潤滑剤を必要としない。The material of the adherend 11 is
Instead of expensive fluorine-based resin, inexpensive resin such as polyacetal or high-molecular polyethylene is used. All of these materials have low sliding friction coefficient, excellent strength against impact and repeated bending, good outsert formability, and self-lubricating property. Therefore, lubricant such as grease is required. do not do.
【0017】この実施例は上記のような構成からなるの
で、図1に矢示Aで示す斜め方向から力が加えられて鍵
1の先端部が矢示Bの方向に移動し、その側壁1cの内
壁面が被着部材11の突部11cに当接すると、腕11
bが実線から仮想線で示す状態に弾性変形し、鍵1の復
帰と共に再び実線位置に復帰する。Since this embodiment is constructed as described above, a force is applied from the diagonal direction indicated by arrow A in FIG. 1 to move the tip of the key 1 in the direction indicated by arrow B, and the side wall 1c thereof. When the inner wall surface of the arm 11 abuts on the protrusion 11c of the adherend 11, the arm 11
b is elastically deformed from the solid line to the state shown by the phantom line, and returns to the solid line position when the key 1 returns.
【0018】これにより、鍵1が横方向へ移動して鍵ガ
イド部10に当接しても、鍵ガイド部10と鍵側壁1c
内側との摩擦力が大幅に低下して当接音の音量が激減す
るので、耳障りなノイズは発生せず、簡単な構成でグリ
ス等の潤滑剤なしに充分な消音効果を得ることができ
る。As a result, even if the key 1 moves laterally and comes into contact with the key guide portion 10, the key guide portion 10 and the key side wall 1c.
Since the frictional force with the inside is greatly reduced and the volume of the contact sound is drastically reduced, no annoying noise is generated, and a sufficient silencing effect can be obtained without a lubricant such as grease with a simple configuration.
【0019】次に、図3はこの発明の他の実施例を示す
正面図である。この実施例では、鍵盤フレーム2の鍵ガ
イド片2aにアウトサート成形する被着部材21を、先
に述べたような摺動摩擦係数がきわめて低い自己潤滑性
の樹脂材によりW字状に形成し、中央に鍵ガイド片2a
に被着される基幹部21aを、その両側に基幹部21a
から枝分れした腕部21b,21bを形成し、この腕2
1b,21bの自由端部の外側に突部21c,21cを
設けて、この突部21c,21cを常時鍵1の両側壁1
c,1cの内壁面に接触させるようにして鍵ガイド部2
0を構成する。Next, FIG. 3 is a front view showing another embodiment of the present invention. In this embodiment, the adherend member 21 to be outsert-molded on the key guide piece 2a of the keyboard frame 2 is formed in a W shape by the self-lubricating resin material having a very low sliding friction coefficient as described above, Key guide piece 2a in the center
The trunk portion 21a attached to the
Forming arms 21b, 21b branched from the arm 2
Protrusions 21c and 21c are provided outside the free ends of the locks 1b and 21b, and the protrusions 21c and 21c are always provided on both side walls 1 of the key 1.
The key guide portion 2 so as to be in contact with the inner wall surfaces of c and 1c
Configure 0.
【0020】この実施例によれば、鍵1に対する鍵ガイ
ド部20との接触面は突部21c,21cのみとなり、
且つその摺動摩擦係数はきわめて低いので、鍵上下時の
摩擦抵抗もきわめて小さく、摩擦音が発生することもな
い。また鍵と鍵ガイド部との間に間隙を設けないので、
鍵の横振れによる鍵ガイド部との当接音発生のおそれも
皆無となる。According to this embodiment, the contact surface of the key 1 with the key guide portion 20 is only the protrusions 21c and 21c,
Moreover, since the sliding friction coefficient is extremely low, the frictional resistance when the key is moved up and down is also extremely small, and no friction noise is generated. Since there is no gap between the key and the key guide,
There is no possibility of a contact noise with the key guide portion due to lateral vibration of the key.
【0021】[0021]
【発明の効果】以上述べたように、この発明による鍵盤
装置の鍵ガイド構造は、鍵盤フレームから立上った鍵ガ
イド片に自己潤滑性の被着部材をアウトサート成形し、
この被着部材の鍵に当接する腕部にばね性を持たせると
いう簡単な構成からなり、グリス等の潤滑剤が不要で長
期間あるいは多数回の使用にも鍵作動の円滑性が失われ
ることがなく、鍵摺動時の摩擦音又は横振時の当接音が
発生するおそれもない。As described above, in the key guide structure of the keyboard device according to the present invention, the self-lubricating adhered member is outsert-molded on the key guide piece rising from the keyboard frame.
It has a simple structure in which the arm portion of the adhered member that comes into contact with the key has a spring property, and no lubricant such as grease is required, and the smoothness of key operation is lost even for long-term use or multiple uses. In addition, there is no possibility that a friction noise when the key slides or a contact noise when the sideways shake occurs.
【図1】この発明の一実施例を示す正面図である。FIG. 1 is a front view showing an embodiment of the present invention.
【図2】この発明を実施した鍵盤装置の概略構成を示す
側面図である。FIG. 2 is a side view showing a schematic configuration of a keyboard device embodying the present invention.
【図3】この発明の他の実施例を示す正面図である。FIG. 3 is a front view showing another embodiment of the present invention.
1…鍵、2…鍵盤フレーム、2a…鍵ガイド片、3…プ
リント基板、4…接点ラバー部材、10,20…鍵ガイ
ド部、11,21…被着部材、11a,21a…基幹
部、11b,21b…腕部、11c,21c…突部(自
由端部)DESCRIPTION OF SYMBOLS 1 ... Key, 2 ... Keyboard frame, 2a ... Key guide piece, 3 ... Printed circuit board, 4 ... Contact rubber member, 10, 20 ... Key guide part 11,21 ... Adhering member, 11a, 21a ... Core part, 11b , 21b ... Arms, 11c, 21c ... Projections (free ends)
Claims (1)
フレームと、該鍵盤フレームに設けられた鍵ガイド部と
からなる鍵盤装置の鍵ガイド構造において、 前記鍵ガイド部が、前記鍵盤フレームに設けられた鍵ガ
イド片と、該鍵ガイド片にアウトサート成形され自己潤
滑性で低摩擦の弾性を有する被着部材とからなり、該被
着部材が、前記鍵ガイド片に被着される基幹部と、該基
幹部から枝分れし、自由端部が前記鍵に当接可能な腕部
とからなることを特徴とする鍵盤装置の鍵ガイド構造。1. A key guide structure of a keyboard device comprising a plurality of keys, a keyboard frame for supporting these keys, and a key guide portion provided on the keyboard frame, wherein the key guide portion is the keyboard frame. A key guide piece and an adherend member outsert-molded on the key guide piece and having self-lubricating and low-friction elasticity, and the adherend member is adhered to the key guide piece. 2. A key guide structure for a keyboard device, comprising: a base part; and an arm part branching from the base part and having a free end capable of abutting on the key.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4132759A JPH05323952A (en) | 1992-05-25 | 1992-05-25 | Key guide structure of keyboard device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4132759A JPH05323952A (en) | 1992-05-25 | 1992-05-25 | Key guide structure of keyboard device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH05323952A true JPH05323952A (en) | 1993-12-07 |
Family
ID=15088896
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4132759A Pending JPH05323952A (en) | 1992-05-25 | 1992-05-25 | Key guide structure of keyboard device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH05323952A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07310434A (en) * | 1994-05-18 | 1995-11-28 | Polyplastics Co | Reinforcing material installing member and executing method therewith |
US6005178A (en) * | 1994-03-24 | 1999-12-21 | Yamaha Corporation | Electronic musical instrument simulating acoustic piano keytouch characteristics |
CN1118009C (en) * | 1998-07-20 | 2003-08-13 | 明碁电脑股份有限公司 | Keys of key-board |
JP2011128511A (en) * | 2009-12-21 | 2011-06-30 | Casio Computer Co Ltd | Keyboard device |
-
1992
- 1992-05-25 JP JP4132759A patent/JPH05323952A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6005178A (en) * | 1994-03-24 | 1999-12-21 | Yamaha Corporation | Electronic musical instrument simulating acoustic piano keytouch characteristics |
JPH07310434A (en) * | 1994-05-18 | 1995-11-28 | Polyplastics Co | Reinforcing material installing member and executing method therewith |
CN1118009C (en) * | 1998-07-20 | 2003-08-13 | 明碁电脑股份有限公司 | Keys of key-board |
JP2011128511A (en) * | 2009-12-21 | 2011-06-30 | Casio Computer Co Ltd | Keyboard device |
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