CN110288961B - Piano keyboard adjusting device and adjusting method using same - Google Patents
Piano keyboard adjusting device and adjusting method using same Download PDFInfo
- Publication number
- CN110288961B CN110288961B CN201910476490.5A CN201910476490A CN110288961B CN 110288961 B CN110288961 B CN 110288961B CN 201910476490 A CN201910476490 A CN 201910476490A CN 110288961 B CN110288961 B CN 110288961B
- Authority
- CN
- China
- Prior art keywords
- wood board
- sliding
- adjusting
- locking module
- transverse wood
- 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
Links
Images
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10C—PIANOS, HARPSICHORDS, SPINETS OR SIMILAR STRINGED MUSICAL INSTRUMENTS WITH ONE OR MORE KEYBOARDS
- G10C3/00—Details or accessories
- G10C3/12—Keyboards; Keys
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10C—PIANOS, HARPSICHORDS, SPINETS OR SIMILAR STRINGED MUSICAL INSTRUMENTS WITH ONE OR MORE KEYBOARDS
- G10C9/00—Methods, tools or materials specially adapted for the manufacture or maintenance of musical instruments covered by this subclass
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Stringed Musical Instruments (AREA)
- Electrophonic Musical Instruments (AREA)
Abstract
The invention discloses a piano keyboard adjusting device and an adjusting method using the piano keyboard adjusting device, which are used for solving the problem that the existing device is unreasonable in stress. The device comprises a keyboard module, a sliding wood frame and a key seat, wherein the sliding wood frame consists of a front transverse wood board, a middle transverse wood board, a rear transverse wood board and a longitudinal wood board, an adjusting component is arranged on the front transverse wood board and applies downward pressure F2 to the front transverse wood board, a locking module I applies jacking force F1 to the front transverse wood board, a locking module II applies downward pressure F4 to the front transverse wood board, copper jackscrews and jackscrew mounting holes are respectively arranged on the front transverse wood board, the middle transverse wood board and the rear transverse wood board, and upward supporting force F3 is applied to the front transverse wood board, the middle transverse wood board and the rear transverse wood board; and a locking module II is also arranged at the rear side of the rear transverse wood board. According to the technology, the sliding wooden frame is locked and fixed in position through the wedge-shaped mechanism, the sliding wooden frame is more reasonable in stress after being locked, no internal stress exists, and the tone quality of the piano is obviously improved through debugging.
Description
Technical Field
The invention relates to the technical field of piano structure improvement.
Background
The shift device of the piano keyboard comprises: a key bed, a sliding wood frame called a "lateral wood board", a displacement mechanism for sliding the sliding wood frame, and a height position adjustment mechanism for performing position adjustment of the sliding wood frame with respect to the key bed in the height direction.
In the moving device having this structure, the advantages and disadvantages are described in detail in patent document 200880011360.4, which shows a longitudinal sectional side view of an example of a shifting device for a piano keyboard. For example, one of the disadvantages is that the key bed and the slide wood frame are basically made of wood, so that warping and twisting occur subtly in any event under the influence of temperature, humidity and external force. Therefore, a gap is formed between the convex portion of the slide wood frame and the key bed, and when a keystroke is made, the lower surface of the slide wood frame hits the upper surface of the key bed to generate a hitting sound, or smooth sliding may not be expected.
Further, in the second disadvantage, when the two adjustment plate mounting screws are slightly loosened, the height position of the reference of the slide wood frame is displaced, a gap is formed between the slide wood frame and the key bed, and when a keystroke is made, the lower surface of the slide wood frame abuts against the upper surface of the key bed, and a striking sound may be generated.
In view of the above-mentioned drawbacks, the 200880011360.4 document, dong piano manufacturers, provides a feasible solution, which solves the two basic problems to some extent, but it is undeniable that the improvement in the patent document still has drawbacks, and the following is to analyze the performance of the drawbacks:
in the 200880011360.4 document, the action force of the displacement guide screw is a positive pressure, and the action force of the adjacent fastening screw is a reverse tension, so that the sliding wooden frame is locally stressed, and the stress causes the sliding wooden frame to be seriously deformed, which needs to be solved.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides the piano keyboard adjusting device and the adjusting method thereof, which improve the stress on the sliding wood frame, avoid the micro deformation of the sliding wood frame caused by stress and improve the tone quality of a piano.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the adjusting device of the piano keyboard comprises a keyboard module, a sliding wood frame used for installing a plurality of groups of keyboard modules, and a key seat used for installing the sliding wood frame, wherein the sliding wood frame has the adjusting capability in the left-right direction and the adjusting capability in the height direction, and consists of a front transverse wood board, a middle transverse wood board, a rear transverse wood board and a longitudinal wood board,
the front transverse plank is provided with an adjusting assembly, which applies a downward pressing force F2 to the front transverse plank,
respectively fixing a locking module I and a locking module II at the front edge and the rear edge of a front transverse wood board, wherein the locking module I applies jacking force F1 to the front transverse wood board, the locking module II applies pressing force F4 to the front transverse wood board,
copper jackscrews and jackscrew mounting holes are respectively arranged on the front, middle and rear transverse wood boards, and upward supporting force F3 is applied to the front, middle and rear transverse wood boards;
and a locking module II is also arranged at the rear side of the rear transverse wood board.
The adjusting assembly comprises a guide sleeve and a locking bolt, the guide sleeve is arranged in a guide long hole extending along the left-right direction X, and the locking bolt penetrates through the guide sleeve and is connected with the key seat.
The guide sleeve and the guide long hole are of a step-shaped structure.
The locking module I comprises a wedge block I and a screw I, wherein the wedge block I is provided with a wedge part, and the wedge part is inserted into a wedge groove I on the front side surface of the front transverse wood board and is fastened on the key seat by the screw I.
The locking module II comprises a wedge block II and a screw II, wherein the wedge block II is fixed on the key seat through the screw II, a wedge part II is arranged on the wedge block II, and the wedge part II is inserted into a wedge groove in the rear side face of the front transverse wood board and is fastened on the key seat through the screw II.
The wedge-shaped grooves I and II are provided with sliding spaces along the Y direction.
The lower end face of the copper jackscrew is a smooth arc surface.
The wedge block I and the wedge block II are rubber blocks.
A method for adjusting the tone quality of a piano is characterized in that,
firstly, pre-positioning a sliding wood frame on a key seat by using a locking module I and a locking module II;
then, primarily installing the copper jackscrew and the adjusting component on the sliding wooden frame;
then, pressing the keyboard module, adjusting the strength of the copper jackscrew and the adjusting assembly according to the tone quality, and adjusting the position of the sliding wood frame in the left and right directions;
and finally, fastening the locking module I and the locking module II to fix the sliding wood frame on the key seat.
The invention has the beneficial effects that:
according to the technology, the sliding wooden frame is locked and fixed in position through the wedge-shaped mechanism, the sliding wooden frame is more reasonable in stress after being locked, no internal stress exists, and the tone quality of the piano is obviously improved through debugging.
Adjust convenient and reliable, can satisfy the needs that piano tone quality adjusted.
Drawings
Fig. 1 is a perspective view of the present device.
Fig. 2 is a partially enlarged view of a portion a in fig. 1.
Fig. 3 is a partially enlarged view of the present apparatus.
Fig. 4 is an overall schematic view of the slide wood frame.
FIG. 5 is a schematic view of B- -B in FIG. 4.
FIG. 6 is a view showing an important sectional structure of the present invention.
Fig. 7 is a partial enlarged view of fig. 6 at D.
Fig. 8 is a perspective view of the slide wood frame.
Fig. 9 is a perspective view i of the locking module i.
Fig. 10 is a perspective view ii of the locking module i.
Fig. 11 is a side view of the locking module i.
Fig. 12 is a perspective view i of the locking module ii.
Fig. 13 is a perspective view ii of the locking module ii.
Fig. 14 is a side view of the locking module ii.
Fig. 15 is a schematic view showing the entire installation of the slide wood frame.
In the figure:
100 a keyboard module, and a keyboard module,
200 sliding wooden frame, 210 front transverse wooden board, 211 guide long hole, 212 wedge-shaped groove, 220 middle transverse wooden board, 223 screw hole, 230 rear transverse wooden board, 240 longitudinal wooden board, 290 string striking machine mounting table,
300 key seats, 310 supports, 320 damper rod track seats, 330 threaded holes,
400 adjusting component I, 410 guiding sleeve, 420 locking bolt,
500 locking module i, 510 wedge block i, 511 wedge part, 512 slotted hole, 520 screw i, 521 slotted hole,
600 locking module II, 610 wedge block II, 620 screw II,
910 screw hole i, 911 screw hole i.
Detailed Description
The structure, principle and details of the present invention will be described in detail and specifically with reference to the embodiments shown in fig. 1 to 15, which are directed to practice, not to strict assembly and manufacturing processes, and will be understood by the reader.
The term is defined as:
white keys, one of the function keys of the piano.
Black keys, one of the function keys of the piano.
The piano keyboard adjusting device of the present invention is applicable to upright pianos or grand pianos having the following structure.
In the piano structure, the keyboard module 100 composed of white keys and black keys, and the sliding wood frame 200 for mounting plural sets of keyboard modules 100, the key bed 300 for mounting the sliding wood frame and other constructional structures, the sliding wood frame 200 needs to have the movement adjusting capability in the left-right direction (X direction) and the adjusting capability in the height direction (Z direction), and the merits of the two adjusting capabilities directly affect the elegance of the piano tone quality.
In the present invention, for convenience of expression, the keyboard module is omitted from the view.
In general, the sliding wood frame 200 is geometrically called a "transverse wood board", that is, a wooden frame structure, which is an essential component of a piano, and the frame structure is assembled by three transverse wood boards (X direction) and three longitudinal wood boards (Y direction), and has a left-right movement adjusting capability and a height adjusting capability as a whole.
Functionally, the slide wood frame 200 is a flat plate or frame-like member that is horizontally arranged to support white keys and black keys constituting the keyboard. Because of the needs of tone quality, the requirement must be wooden material and avoid the trompil as far as possible to avoid causing unnecessary influence to tone quality.
In the assembly relation, the sliding wood frame 200 is installed on the key bed 300, and the assembly relation requires a three-dimensional adjusting function, and the adjusting capability is ensured during the installation process.
Meanwhile, the basic shape of the sliding wood frame should be optimally maintained during installation and adjustment, and no prestress should be generated inside, any prestress generated due to, for example, installation, adversely affecting the sound quality of the piano.
Meanwhile, the optimum delicate matching relationship between the sliding wood frame and the key seat is kept during the installation and adjustment processes.
The key base 300 has a key base upper surface for engaging with a sliding wood frame, and supports 310 extending upward from both ends of the key base 300 upper surface, which are mounting structures for other components, are omitted in this embodiment.
The key bed 300 is provided on a support member on which the piano is mounted, in an assembled relationship. A damper lever rail holder 320 and other components generally stand upward at the rear of the upper surface of the key bed 300. These are conventional functional structure layouts, which are common structures in piano structures and are not described in detail.
The various structures are described in greater detail below, and in particular, the structures of the present invention are illustrated in greater detail.
The slide wooden frame 200 is constructed by integrally assembling a front lateral wooden board 210, a middle lateral wooden board 220, a rear lateral wooden board 230, and three longitudinal wooden boards 240 arranged in the front-rear direction Y, which are provided in the left-right direction (X direction), and the assembled and coupled structure is a dedicated adhesive bonding. The sliding wooden frame is also a preassembled unit module, and is assembled and debugged after being manufactured.
As shown in fig. 1, a string striking machine mounting table 290 is provided on the rear cross wood plate 230 of the sliding wood frame, and the string striking machine mounting table 290 is used for mounting a string striking frame for supporting a string striking machine, which will not be described in detail.
Six sets of adjusting assemblies I400 are arranged on the front transverse wood board 210 of the sliding wood frame 200, a downward pressing force F2 is provided for the front transverse wood board under the action of the adjusting assemblies I400, the adjusting assemblies I are matched for use, and each set of adjusting assemblies I400 comprises the following components:
the long guide hole 211 is a long stepped hole extending in the left-right direction X, and is a part of the front cross board 210, that is, the long guide hole is one of the structures of the front cross board made of wood, and the long guide hole 211 is a stepped hole in the depth direction, and referring to fig. 15, the long guide hole 211 has a head portion capable of accommodating the locking bolt 420 in the long hole at the upper portion having a large diameter, and an axial portion of the locking bolt 420 externally fitted with the guide sleeve 410 is accommodated in the long hole at the lower portion having a small diameter. That is, the lock bolt 420 is not in direct contact with the long guide hole 211, but is moved excessively by the guide sleeve. The provision of such a structure facilitates the fine adjustment capability of the slide wood frame 200 in the left-right direction (X direction), or the possibility of so-called fine adjustment.
Under the locking effect of the locking bolt, the sliding wooden frame can be locked, when the adjustment is needed, the left and right directions can be adjusted by loosening the locking nut, the adjustment process is reversible, and the locking bolt has friendly adjustment operation convenience and high accuracy.
The front edge and the rear edge of the front transverse wood board are respectively provided with a wedge-shaped locking module I500 and a wedge-shaped locking module II 600, wherein the wedge-shaped locking module I positioned on the front edge plays a role and aims to provide an upward jacking force F1 for the front transverse wood board, the jacking force F1 plays a role in the front edge of the front transverse wood board, the front transverse wood board and the adjusting component I form a combination, the front transverse wood board has a clamping and clamping effect, and the combination can effectively adjust the fitting degree of the front transverse wood board and the upper surface of the key seat 300 or adjust the degree of micro clearance.
The wedge-shaped locking module I500 structurally comprises a wedge block I510, a screw I520 and a threaded hole 330, wherein the wedge block I510 is a rubber block and has certain rigidity and elasticity, a pointed wedge part 511 is arranged on the wedge block I510, the wedge part 511 is used for being inserted into a front side wedge groove 212 of the front transverse wood board 210, the wedge part 511 and the front side wedge groove 212 of the front transverse wood board are matched through a wedge surface, namely, when the wedge block I is matched with the front transverse wood board, the front transverse wood board is pressed on the wedge part 511 of the wedge block I, namely, the wedge block I and the adjusting component I jointly act to clamp the front transverse wood board 210, the clamping action is generated to enable the height of the front transverse wood board to be adjusted, for example, the wedge block I is moved towards the front transverse wood board, the front transverse plank 210 is allowed a slight lifting action to achieve height adjustment and is maintained at a reasonable gap or snug tightness by the adjustment assembly i and the wedge-shaped locking module i 500. Correspondingly, a horizontal long hole 512 is formed in the wedge block i 510, the long hole is arranged along the Y direction, a threaded hole 330 is correspondingly formed in the key base 300, and the fixing and the orientation adjustment of the wedge block i 221 can be achieved through a screw i 520 penetrating through the long hole 521 and the threaded hole 223.
Correspondingly, the front side wedge-shaped groove 212 is arranged along the Y direction and is consistent with the trend of the long strip holes, so that enough adjusting space is reserved for the front transverse wood board, and one of important conditions for adjusting the tone quality of the key is set during adjustment.
Screw holes I910 and jackscrews I911 matched with the screw holes I are formed in the front transverse wood board, wherein the jackscrews are made of brass, the lower ends of the jackscrews I911 are attached to the slave key bases 300 to form a supporting point, and upward supporting force F3 is provided for the front transverse wood board.
The lower end surface of the jack screw i 911 is a sliding contact surface which is in sliding contact with the upper surface of the key bed, and is smoothly engaged and adjusted, and the lower end surface of the jack screw is preferably designed to be a circular arc surface so as to be in sliding engagement in the left-right direction. The sliding is usually guided by a guide slot, and the jackscrew I is in follow-up action.
The wedge-shaped locking module II 600 comprises a wedge block II 610, a screw II 620 and a threaded hole, wherein the wedge block II 610 is fixed on the key base 300 through the screw II 620, the wedge block II 610 is provided with a long hole, and the front and back directions of the long hole are adjustable. The wedge part of the wedge block II 610 is inserted into the slot of the front transverse wood board to realize buckling connection.
Similarly, the locking modules II 600 with the same structure are respectively arranged at the front edge and the rear edge of the rear transverse wood board, so that the rear transverse formwork can be fixed.
Screw holes I910 are formed in the rear transverse wood board and the middle transverse wood board, screw I911 matched with the screw holes I, the lower ends of the screw I911 and the screw I911 are attached to the secondary keybed 300 to form a supporting point, and upward supporting force F3 is applied to the front transverse wood board.
Therefore, in the present invention, the sliding wood frame 200 and the key bed 300 are provided in a non-contact state without providing a portion where the sliding wood frame 200 and the key bed 300 are directly in sliding contact with each other, but with a gap S defined by the height of the lower end surface of the holding screw, the locking screw, and the wedge blocks i and ii on both sides.
Of course, the wedge-shaped block I and the wedge-shaped block II are matched to form the wedge-shaped block I and the wedge-shaped block II.
In the invention, the locking modules, the adjusting components and the copper screws on the front, middle and rear transverse wood boards jointly act on the sliding wood frame, so that the sliding wood frame can be adjustably and controllably installed.
Next, a method of adjusting using the apparatus will be described,
preliminary fixing of the sliding wooden frame:
(1) installation of copper jackscrew I911
The contact base pin installation process is as follows: and (3) enabling the lower end surface of the copper jackscrew not to abut against the lower surface of the exposed sliding wood frame in the preassembling process from the upper part to the front transverse wood board, the middle transverse wood board and the rear transverse wood board.
(2) The sliding wood frame is fixed, the sliding wood frame is placed on the key seat, and the sliding wood frame is preliminarily fixed on the key seat 300 temporarily through the adjusting assembly I400.
(3) The locking module I500 and the locking module II 600 are used for fixing the sliding wood frame from the front side and the rear side respectively and are fixed temporarily.
Adjusting:
the position of jackscrew is adjusted for this jackscrew basic contact key seat to adjust the elasticity degree of adjusting part I400, at this in-process, can carry out the screw in condition of smooth and easy gliding within range regulation locking bolt 420 at the slip wooden frame, so that the clearance between the upper surface of key seat is infinitely close to the lower terminal surface of locking bolt 420.
And the proper position is determined according to the playing of the key, and finally the locking module I500 and the locking module II 600 on the side are used for locking the position and are basically fixed after locking.
The invention can be used for a structure which slides towards the left and right directions under the state that a keyboard and a string striking machine are integrally assembled, the structure and the adjustment process are used for locking the adjusted sliding wood frame through the locking module I500 and the locking module II 600, and the impact sound of the sliding wood frame on a key seat is generated during the key striking after the locking.
The above-mentioned adjustment process is repeated in reality until the best sound quality is achieved.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and do not limit the scope of the present invention, and various modifications and improvements of the present invention by those skilled in the art without departing from the spirit of the present invention are intended to fall within the scope of the present invention defined by the claims.
Claims (7)
1. The adjusting device of the piano keyboard comprises a keyboard module, a sliding wood frame used for installing a plurality of groups of keyboard modules, and a key seat used for installing the sliding wood frame, wherein the sliding wood frame has the adjusting capability in the left-right direction and the adjusting capability in the height direction, and consists of a front transverse wood board, a middle transverse wood board, a rear transverse wood board and a longitudinal wood board,
the front transverse plank is provided with an adjusting assembly, which applies a downward pressing force F2 to the front transverse plank,
the front edge and the rear edge of the front transverse wood board are respectively fixed by a locking module I and a locking module II, wherein the locking module I applies jacking force F1 to the front transverse wood board, the locking module II applies pressing force F4 to the front transverse wood board,
copper jackscrews and jackscrew mounting holes are respectively arranged on the front, middle and rear transverse wood boards, and upward supporting force F3 is applied to the front, middle and rear transverse wood boards;
a locking module II is also arranged on the rear side of the rear transverse wood board;
the locking module I comprises a wedge block I and a screw I, wherein the wedge block I is provided with a wedge part which is inserted into a wedge groove I on the front side surface of the front transverse wood board and is fastened on the key seat by the screw I;
the locking module II comprises a wedge block II and a screw II, wherein the wedge block II is fixed on the key seat through the screw II, a wedge part II is arranged on the wedge block II, and the wedge part II is inserted into a wedge groove II on the rear side surface of the front transverse wood board and is fastened on the key seat through the screw II.
2. The piano keyboard adjustment device according to claim 1, wherein the adjustment assembly comprises a guide sleeve installed in a guide long hole extending in the left-right direction X, and a locking bolt passing through the guide sleeve and coupled to the key bed.
3. The piano keyboard adjustment device according to claim 2, wherein the guide sleeve and the guide long hole have a stepped structure.
4. The piano keyboard adjustment device according to claim 1, wherein the wedge grooves i and ii have a space for sliding movement in the Y direction.
5. The piano keyboard adjustment device according to claim 1, wherein the lower end surface of the copper jack is a smooth circular arc surface.
6. The piano keyboard adjustment device according to claim 1, wherein the wedge blocks i and ii are rubber blocks.
7. A method of adjusting the sound quality of a piano using the piano keyboard adjusting apparatus according to any one of claims 1 to 6,
firstly, pre-positioning a sliding wood frame on a key seat by using a locking module I and a locking module II;
then, primarily installing the copper jackscrew and the adjusting component on the sliding wooden frame;
then, pressing the keyboard module, adjusting the strength of the copper jackscrew and the adjusting assembly according to the tone quality, and adjusting the position of the sliding wood frame in the left and right directions;
and finally, fastening the locking module I and the locking module II to fix the sliding wood frame on the key seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910476490.5A CN110288961B (en) | 2019-06-03 | 2019-06-03 | Piano keyboard adjusting device and adjusting method using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910476490.5A CN110288961B (en) | 2019-06-03 | 2019-06-03 | Piano keyboard adjusting device and adjusting method using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110288961A CN110288961A (en) | 2019-09-27 |
| CN110288961B true CN110288961B (en) | 2021-05-07 |
Family
ID=68003283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910476490.5A Active CN110288961B (en) | 2019-06-03 | 2019-06-03 | Piano keyboard adjusting device and adjusting method using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110288961B (en) |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4106388A (en) * | 1976-03-12 | 1978-08-15 | Wersi-Electronic Gmbh & Co. Kommanditgesellschaft | Keyboard unit for electronic musical instruments |
| JP2528697B2 (en) * | 1988-09-14 | 1996-08-28 | 株式会社河合楽器製作所 | Piano keyboard height adjustment method |
| JP2003122343A (en) * | 2001-10-09 | 2003-04-25 | Kawai Musical Instr Mfg Co Ltd | Keyboard |
| JP2003167581A (en) * | 2001-09-19 | 2003-06-13 | Yamaha Corp | Electronic keyboard instrument |
| CN1503218A (en) * | 2002-11-22 | 2004-06-09 | ������������ʽ���� | Keyboard musical instrument having pedal mechanism |
| CN1691132A (en) * | 2004-04-28 | 2005-11-02 | 东洋钢琴制造株式会社 | Piano shifting device |
| US20080121089A1 (en) * | 2006-11-28 | 2008-05-29 | Christopher Richard Rawson | Piano key leveling device and method |
| JP2008241840A (en) * | 2007-03-26 | 2008-10-09 | Kawai Musical Instr Mfg Co Ltd | Fixing device for fallboard of piano |
| US20080257131A1 (en) * | 2007-04-17 | 2008-10-23 | Yamaha Corporation | Electronic musical instrument |
| CN101681615A (en) * | 2007-04-09 | 2010-03-24 | 东洋钢琴制造株式会社 | Shift device for piano keyboard and method of adjusting shift device for piano keyboard |
| CN102509543A (en) * | 2011-11-09 | 2012-06-20 | 赵洪云 | Shell component for auxiliary piano teaching instrument |
| CN205282064U (en) * | 2015-12-24 | 2016-06-01 | 湖南城市学院 | Piano string fixing device with adjustable |
| CN205296703U (en) * | 2015-11-24 | 2016-06-08 | 黄石市振大弹簧有限公司 | Wood -Plastic with horizontal flexible fine -tuning |
| CN207217087U (en) * | 2017-08-08 | 2018-04-10 | 森鹤乐器股份有限公司 | A kind of Novel piano keyboard with key pushing block |
| CN208256268U (en) * | 2018-01-30 | 2018-12-18 | 佳木斯大学 | A kind of piano levelling device with quick adjusting and fine adjustment function |
| CN208444584U (en) * | 2018-08-14 | 2019-01-29 | 长江师范学院 | A kind of adjustable fingerboard |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4930388A (en) * | 1989-01-17 | 1990-06-05 | Sarkis Khanzadian | Keyboard protector |
| JP3191329B2 (en) * | 1991-07-12 | 2001-07-23 | ヤマハ株式会社 | Upright piano shelf mounting structure |
| JP3354011B2 (en) * | 1994-08-04 | 2002-12-09 | 株式会社河合楽器製作所 | Key height adjustment device |
| JP3367273B2 (en) * | 1995-05-22 | 2003-01-14 | ヤマハ株式会社 | Keyboard device |
| CN103075448B (en) * | 2013-01-09 | 2015-07-15 | 孔庆堂 | Overrunning self-locking device |
-
2019
- 2019-06-03 CN CN201910476490.5A patent/CN110288961B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4106388A (en) * | 1976-03-12 | 1978-08-15 | Wersi-Electronic Gmbh & Co. Kommanditgesellschaft | Keyboard unit for electronic musical instruments |
| JP2528697B2 (en) * | 1988-09-14 | 1996-08-28 | 株式会社河合楽器製作所 | Piano keyboard height adjustment method |
| JP2003167581A (en) * | 2001-09-19 | 2003-06-13 | Yamaha Corp | Electronic keyboard instrument |
| JP2003122343A (en) * | 2001-10-09 | 2003-04-25 | Kawai Musical Instr Mfg Co Ltd | Keyboard |
| CN1503218A (en) * | 2002-11-22 | 2004-06-09 | ������������ʽ���� | Keyboard musical instrument having pedal mechanism |
| CN1691132A (en) * | 2004-04-28 | 2005-11-02 | 东洋钢琴制造株式会社 | Piano shifting device |
| US20080121089A1 (en) * | 2006-11-28 | 2008-05-29 | Christopher Richard Rawson | Piano key leveling device and method |
| JP2008241840A (en) * | 2007-03-26 | 2008-10-09 | Kawai Musical Instr Mfg Co Ltd | Fixing device for fallboard of piano |
| CN101681615A (en) * | 2007-04-09 | 2010-03-24 | 东洋钢琴制造株式会社 | Shift device for piano keyboard and method of adjusting shift device for piano keyboard |
| US20080257131A1 (en) * | 2007-04-17 | 2008-10-23 | Yamaha Corporation | Electronic musical instrument |
| CN102509543A (en) * | 2011-11-09 | 2012-06-20 | 赵洪云 | Shell component for auxiliary piano teaching instrument |
| CN205296703U (en) * | 2015-11-24 | 2016-06-08 | 黄石市振大弹簧有限公司 | Wood -Plastic with horizontal flexible fine -tuning |
| CN205282064U (en) * | 2015-12-24 | 2016-06-01 | 湖南城市学院 | Piano string fixing device with adjustable |
| CN207217087U (en) * | 2017-08-08 | 2018-04-10 | 森鹤乐器股份有限公司 | A kind of Novel piano keyboard with key pushing block |
| CN208256268U (en) * | 2018-01-30 | 2018-12-18 | 佳木斯大学 | A kind of piano levelling device with quick adjusting and fine adjustment function |
| CN208444584U (en) * | 2018-08-14 | 2019-01-29 | 长江师范学院 | A kind of adjustable fingerboard |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110288961A (en) | 2019-09-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110288961B (en) | Piano keyboard adjusting device and adjusting method using same | |
| TWI712382B (en) | Connection device | |
| KR102098652B1 (en) | Apparatus for testing display panel | |
| CN111255112A (en) | Assembled wall body that construction was used | |
| US4990937A (en) | Device for supporting a print head | |
| CN217425597U (en) | FPC board electricity is surveyed and is tested compound tool | |
| CN110335574B (en) | Long part mounting structure of piano | |
| CN101436400B (en) | Hammer shank of piano and method of manufacturing the same | |
| JP4901559B2 (en) | Piano keyboard shift device and method for adjusting piano keyboard shift device | |
| CN212666957U (en) | Self-adaptation printing plate mechanism suitable for stylus printer | |
| KR102468968B1 (en) | Position Adjustment Device for Moving Plate in Injection Molding Machine | |
| CN211199675U (en) | Tabouret structure with front and rear double auxiliary rails driven in Y direction | |
| JP2001183402A (en) | Probing device for measuring impedance of printed circuit board | |
| US6348645B1 (en) | Damper for grand piano | |
| CN221137303U (en) | Mainboard fixed knot constructs and printer | |
| KR101407803B1 (en) | Keyboard Frame Adjustable Clearance Between Keyboards in Keyed Instrument | |
| JPH1165554A (en) | Pedal mechanism of grand piano | |
| JPH0816155A (en) | Damper of grand piano | |
| CN211940651U (en) | Clamping mechanism for clamping keyboard | |
| CN111546742A (en) | Self-locking buckle and oversized drawer type defoaming machine with same | |
| CN219417559U (en) | Floating type test module and test device | |
| CN215730817U (en) | String device of triangular piano hammer | |
| US5259287A (en) | Upright piano equipped with coupling units for horizontally supporting key bed | |
| CN213900413U (en) | Actuator base with good fixing effect | |
| JP3354011B2 (en) | Key height adjustment device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |