JPH02134595U - - Google Patents
Info
- Publication number
- JPH02134595U JPH02134595U JP4203089U JP4203089U JPH02134595U JP H02134595 U JPH02134595 U JP H02134595U JP 4203089 U JP4203089 U JP 4203089U JP 4203089 U JP4203089 U JP 4203089U JP H02134595 U JPH02134595 U JP H02134595U
- Authority
- JP
- Japan
- Prior art keywords
- keyboard lid
- leaf spring
- instrument body
- shaped
- stopper
- 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.)
- Granted
Links
- 239000002184 metal Substances 0.000 description 1
Landscapes
- Electrophonic Musical Instruments (AREA)
Description
第１図のこの考案に係る開閉装置を施した鍵盤
蓋の一側後部の斜視図。第２図イはその鍵盤蓋を
開いたときの一部切断側面図。同図ロは蓋を若干
閉じたときの一部切断側面図。同図ハは蓋を閉じ
たときの一部切断側面図。第３図は第２図ハの背
面図。第４図は蓋の落下トルクと板ばねの弾撥力
の関係を示すぐらふ。第５図イ，ロはそれぞれ摩
擦部材の変更例を示す平面図。第６図イは従来装
置の一例の側面図。同図ロはその縦断面図。第７
図イは、従来装置の他例の側面図。第７図ロはそ
のロータリダンパ部分の断面図。
図中、１１……鍵盤蓋、１１ａ……ピン軸、１
２……第１板ばね、１２ａ……自由端、１３……
第２板ばね、１３ａ……基端部、１４……ピン、
１５……ストツパ、１６……摩擦プレート、２１
……側板、２１ａ……支持金具、２２……前框、
２３……ピン板、２４……拍子木。
FIG. 2 is a perspective view of the rear portion of one side of the keyboard lid equipped with the opening/closing device according to the invention shown in FIG. 1; Figure 2A is a partially cutaway side view of the keyboard when the lid is opened. Figure B is a partially cutaway side view when the lid is slightly closed. Figure C is a partially cutaway side view when the lid is closed. Figure 3 is a rear view of Figure 2C. Figure 4 shows the relationship between the falling torque of the lid and the elastic force of the leaf spring. FIGS. 5A and 5B are plan views showing modified examples of the friction member, respectively. FIG. 6A is a side view of an example of a conventional device. Figure B is a vertical cross-sectional view. 7th
Figure A is a side view of another example of the conventional device. FIG. 7B is a sectional view of the rotary damper portion. In the figure, 11...Keyboard lid, 11a...Pin shaft, 1
2...First leaf spring, 12a...Free end, 13...
Second leaf spring, 13a... base end portion, 14... pin,
15...stopper, 16...friction plate, 21
...Side plate, 21a...Supporting metal fittings, 22...Front stile,
23...Pin board, 24...Clapboard.
Claims (1)
１１の後部両側の隆起側端面に楽器本体側に突出
して湾曲する舌片状の第２板ばね１３の基端部１
３ａを取付け、各基端部１３ａの一側縁には側面
ほぼＳ字状をなした細長な第１板ばね１２の内端
をそれぞれ鍵盤蓋１１に対し上下に回動可能に連
結し、かつ鍵盤蓋１１の上記後部隆起側の端面に
は磁石を備えたストツパ１５を調整可能に取付け
て上記第１板ばね１２の連結内端部を吸引保持す
るようになし、楽器本体の内面には上記第２板ば
ね１３の回動経路に沿つて上部に向つて肉厚にし
た弧状の摩擦プレート１６を挿着してなる鍵盤蓋
の開閉装置。 A proximal end portion 1 of a tongue-shaped second leaf spring 13 that protrudes toward the musical instrument body and curves on the raised side end surfaces on both rear sides of the keyboard lid 11 that is supported in an openable/closable manner on the side plate of the musical instrument body.
3a, and the inner ends of elongated first leaf springs 12 having a substantially S-shaped side surface are connected to one side edge of each base end portion 13a so as to be rotatable up and down with respect to the keyboard lid 11, and A stopper 15 equipped with a magnet is adjustably attached to the end surface of the rear raised side of the keyboard lid 11 to attract and hold the connecting inner end of the first leaf spring 12, and the stopper 15 is attached to the inner surface of the instrument body. This keyboard lid opening/closing device includes an arc-shaped friction plate 16 that is thickened upward along the rotation path of the second leaf spring 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989042030U JPH0544872Y2 (en) | 1989-04-12 | 1989-04-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989042030U JPH0544872Y2 (en) | 1989-04-12 | 1989-04-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02134595U true JPH02134595U (en) | 1990-11-08 |
| JPH0544872Y2 JPH0544872Y2 (en) | 1993-11-15 |
Family
ID=31553215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989042030U Expired - Lifetime JPH0544872Y2 (en) | 1989-04-12 | 1989-04-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0544872Y2 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS543135U (en) * | 1977-06-09 | 1979-01-10 | ||
| JPS5730788A (en) * | 1980-07-31 | 1982-02-19 | Nippon Oil Co Ltd | Catalytic cracking of heavy petroleum oil |
| JPS58121092A (en) * | 1982-01-11 | 1983-07-19 | インタ−ナシヨナル ビジネス マシ−ンズ コ−ポレ−シヨン | Color display terminal control method and color display terminal |
| JPS6355592A (en) * | 1986-08-25 | 1988-03-10 | ヤマハ株式会社 | Keyboard lid opening-closing apparatus for keyed instrument |
-
1989
- 1989-04-12 JP JP1989042030U patent/JPH0544872Y2/ja not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS543135U (en) * | 1977-06-09 | 1979-01-10 | ||
| JPS5730788A (en) * | 1980-07-31 | 1982-02-19 | Nippon Oil Co Ltd | Catalytic cracking of heavy petroleum oil |
| JPS58121092A (en) * | 1982-01-11 | 1983-07-19 | インタ−ナシヨナル ビジネス マシ−ンズ コ−ポレ−シヨン | Color display terminal control method and color display terminal |
| JPS6355592A (en) * | 1986-08-25 | 1988-03-10 | ヤマハ株式会社 | Keyboard lid opening-closing apparatus for keyed instrument |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0544872Y2 (en) | 1993-11-15 |