JPH064389Y2 - Piano soundboard - Google Patents

Piano soundboard

Info

Publication number
JPH064389Y2
JPH064389Y2 JP1988117794U JP11779488U JPH064389Y2 JP H064389 Y2 JPH064389 Y2 JP H064389Y2 JP 1988117794 U JP1988117794 U JP 1988117794U JP 11779488 U JP11779488 U JP 11779488U JP H064389 Y2 JPH064389 Y2 JP H064389Y2
Authority
JP
Japan
Prior art keywords
soundboard
sound
wood
bonded
grain
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.)
Active
Application number
JP1988117794U
Other languages
Japanese (ja)
Other versions
JPH0239294U (en
Inventor
宗雄 石田
Original Assignee
株式会社河合楽器製作所
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 株式会社河合楽器製作所 filed Critical 株式会社河合楽器製作所
Priority to JP1988117794U priority Critical patent/JPH064389Y2/en
Publication of JPH0239294U publication Critical patent/JPH0239294U/ja
Application granted granted Critical
Publication of JPH064389Y2 publication Critical patent/JPH064389Y2/en
Active legal-status Critical Current

Links

Description

【考案の詳細な説明】 [産業上の利用分野] 本考案はピアノの響板に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a soundboard for a piano.
[従来の技術] 従来、ピアノの響板は弾性が高く軽い木材を木目に沿っ
た縦長の単板とし、これを木目方向を同一にして横に何
枚か接着(横矧ぎ)、この裏面に響板材の木理方向に交
差して9〜17本の響棒を接着して響板を完成してい
た。この響棒は堅木であり単板の木理方向の伝播速度
が、木理に交差する方向の振動の伝播速度の2〜3倍で
あるので、響棒を単板の木理方向に交差させて接着すれ
ば弦の振動を響板全体に均一に伝播することができる。
[Prior Art] Conventionally, the soundboard of a piano is a vertically long single plate made of light and highly elastic wood, and the wood grain direction is the same, and several pieces are bonded sideways (horizontal perforation). The soundboard was completed by crossing the soundboard material in the wood grain direction and adhering 9 to 17 soundbars. This sound stick is a solid wood, and the propagation speed in the wood direction of the veneer is 2-3 times the propagation speed of vibration in the direction crossing the wood, so the sound stick crosses in the wood direction of the veneer. If they are adhered to each other, the vibration of the strings can be uniformly propagated to the entire soundboard.
[考案が解決しようとする問題] 従来複数枚の単板を木目方向を揃えて矧ぎ合わせて接着
した響板は、湿度による木材の収縮・膨張及び温度によ
る接着強度の変化を受けるが接着強度が強いと、響板の
みが膨張・収縮し、特に寒冷地においては響板の割れが
生じやすかった。また、第2図(a)は響棒(2)を単板(1)
に接着しない状態の響板(3)の振動モード例を示し、第
2図(b)は響棒(2)を単板(1)に接着した状態での響板(3)
の振動モード例を示し、響棒(2)の接着によって振動が
均一化し、円形のモードとなることを示している。
[Problems to be solved by the invention] Conventionally, a soundboard, which is made by adhering multiple veneers by aligning the grain directions and adhering to each other, undergoes shrinkage / expansion of wood due to humidity and changes in adhesive strength due to temperature, but the adhesive strength When the value is strong, only the soundboard expands and contracts, and the soundboard is likely to crack, especially in cold regions. Also, FIG. 2 (a) shows a sound bar (2) as a single plate (1).
Fig. 2 (b) shows an example of the vibration mode of the soundboard (3) not bonded to the soundboard, and Fig. 2 (b) shows the soundboard (3) with the soundbar (2) bonded to the single plate (1).
An example of the vibration mode is shown, and it is shown that the vibration is made uniform by the adhesion of the sound stick (2) and becomes a circular mode.
即ち、単板(1)への響棒(2)の接着によって振動モードが
制御され、単板(1)同士の接着の有無による振動モード
は余り影響を受けない。
That is, the vibration mode is controlled by adhering the sound bar (2) to the single plate (1), and the vibration mode depending on whether or not the single plates (1) are adhered to each other is not significantly affected.
[問題を解決するための手段] 木理方向を同一にして複数枚並列に配設したのみの単板
(1)裏面に、該単板(1)の木理方向と直交して複数の響棒
(2)を所定間隔を存してを接着した。
[Means for Solving the Problem] A single plate in which a plurality of sheets are arranged in parallel with the same grain direction.
(1) On the back side, a plurality of sound sticks are orthogonal to the grain direction of the veneer (1).
(2) was adhered at a predetermined interval.
[実施例] 響板は第1図のように木目方向に長い響板1を横になら
べ、この響板1の木目方向に交差するように響棒2を9
〜17本接着しているが、本考案においては響板1どう
しの接着(横矧ぎ)を行なわず、響棒のみで響板間の補
強を行なう。
[Example] As for the soundboard, as shown in FIG. 1, soundboards 1 which are long in the wood grain direction are arranged side by side, and sound sticks 2 are arranged so as to intersect in the wood grain direction.
Although ~ 17 pieces are bonded together, in the present invention, the sound boards 1 are not bonded (horizontal perforation), and only the sound sticks are used to reinforce the sound boards.
本考案においては、響板を矧ぎせず、響棒により響板間
の補強と振動伝播の異方性の均一化が行なわれる。なお
図においてはグランドピアノの響板体を図示したが、ア
ップライトピアノの響板においても同様である。
In the present invention, the soundboards are not scrambled, and the soundboards are used to reinforce the soundboards and make the anisotropy of vibration propagation uniform. Although the soundboard of the grand piano is shown in the drawing, the same applies to the soundboard of the upright piano.
[考案の効果] 響板の横矧ぎを行なわず響棒により響板間の補強をする
ことにより、寒冷地等における響板割れを防止でき音響
的にもすぐれた響板を構成できる。
[Effects of the Invention] By reinforcing the space between the soundboards with a soundbar without performing horizontal crosscutting of the soundboards, it is possible to prevent soundboard cracks in cold regions and to construct a soundboard with excellent acoustic properties.
【図面の簡単な説明】[Brief description of drawings]
第1図は響棒を接着した響板の裏面図。第2図は響棒を
接着しない時(a)と接着した時(b)の振動モード例を示す
図。 1…響板、2…響棒 3…響板
Fig. 1 is a back view of a soundboard with sound sticks attached. FIG. 2 is a diagram showing examples of vibration modes when the sound stick is not bonded (a) and when the sound stick is bonded (b). 1 ... Soundboard, 2 ... Soundbar 3 ... Soundboard

Claims (1)

    【実用新案登録請求の範囲】[Scope of utility model registration request]
  1. 【請求項1】木理方向を同一にして複数枚並列に配設し
    たのみの単板(1)裏面に、該単板(1)の木理方向と直交し
    て複数の響棒(2)を所定間隔を存して接着したことを特
    徴とするピアノの響板(3)。
    Claims: 1. A plurality of sound sticks (2) are provided on the back surface of a veneer (1) which is arranged in parallel with the same grain direction and orthogonal to the grain direction of the veneer (1). A soundboard (3) for a piano characterized in that the two are bonded at a predetermined interval.
JP1988117794U 1988-09-07 1988-09-07 Piano soundboard Active JPH064389Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988117794U JPH064389Y2 (en) 1988-09-07 1988-09-07 Piano soundboard

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988117794U JPH064389Y2 (en) 1988-09-07 1988-09-07 Piano soundboard

Publications (2)

Publication Number Publication Date
JPH0239294U JPH0239294U (en) 1990-03-15
JPH064389Y2 true JPH064389Y2 (en) 1994-02-02

Family

ID=31361564

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988117794U Active JPH064389Y2 (en) 1988-09-07 1988-09-07 Piano soundboard

Country Status (1)

Country Link
JP (1) JPH064389Y2 (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4117252Y1 (en) * 1964-07-25 1966-08-10

Also Published As

Publication number Publication date
JPH0239294U (en) 1990-03-15

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