CN1691132A - Piano shifting device - Google Patents
Piano shifting device Download PDFInfo
- Publication number
- CN1691132A CN1691132A CN 200410037525 CN200410037525A CN1691132A CN 1691132 A CN1691132 A CN 1691132A CN 200410037525 CN200410037525 CN 200410037525 CN 200410037525 A CN200410037525 A CN 200410037525A CN 1691132 A CN1691132 A CN 1691132A
- Authority
- CN
- China
- Prior art keywords
- track
- refractory slab
- piano
- permanent magnet
- framework group
- 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
- 239000002023 wood Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 5
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 4
- 235000014676 Phragmites communis Nutrition 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
Images
Landscapes
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention provides a piano shift device, wherein, keyboard and mechanic structure body can shift easily and smoothly. The frame group with keyboard (1) and mechanic structure body can be set slip on piano shift device in deck (3); permanent magnets (23), (24) are embedded in deck (3) and track (6) of frame group, which are homopolar opposite on space.
Description
Technical field
The present invention relates to the shift unit of improved piano, it can use on vertical or horizontal any piano, and keyboard and physical construction (action) device body is shifted swimmingly.
Background technology
Existing general piano as depicted in figs. 1 and 2, keyboard 1 and the mechanical structure device body (keystroke device) that has only shown physical construction pedestal 2 are installed in and are arranged at back three tracks (reed) 4 in preceding on the refractory slab 3,5,6 and the framework group (keyboard reed) that constitutes such as wife's wood (wife's wood) 7 on; Above-mentioned framework group by the projection rod 8 that moves by the operation of displacement pedal and rectangular-shaped lever 9 to the left and right direction slide, carry out the structure of the displacement that needs.In this structure, float a bit slightly with the upper surface that contact block 11 is bearing in refractory slab 3 many places of intermediate orbit 5, before track 4 and lining track 6 relative to the surface supports respectively that by guide roller 12 a bit, it partly contacts with the upper surface of refractory slab 3 on the contrary on the upper surface of refractory slab 3 is floating slightly.
Guide roller 12 utilizes a pair of wood screw 13,14 to be bearing on the free end of the adjustable plate 15 that is installed on the refractory slab 3, the apparent surface's of track 4 and lining track 6 floatation volume (with the gap of refractory slab 3) before can regulating.That is: adjustable plate 15 bends to shallow concave between wood screw 13 and wood screw 14, the lower surface that makes sweep 15a with bury underground into the head that bears screw 16 contact, with this head (with the upper surface of refractory slab 3 be a face) 16a is as fulcrum, by tightening or the operation of lax wood screw 13,14, make the free end lifting of regulating plank 15, with the surface distance of refractory slab 3 or concavo-convex corresponding, regulate above-mentioned floatation volume, track 4 and lining track 6 slide reposefully before can making.
Among the figure, 17 are the displacement roller on the slave end end that is installed in this lever 9 with respect to the pivot 18 of lever 9.But be installed in to displacement roller 17 rotations on the setting-in part 19 on the side of track 6 in being arranged on.21 for acting on the return spring on the projection rod 8, and 22 are the return spring on the track 6 in acting on.In the illustrated case, in physical construction pedestal 2 is installed on the track 6, but according to the difference of piano kind, also can be on middle orbit 5 and lining track 6.
In this conventional device, since the weight of mechanical structure device body by track in the mechanical structure device body of packing into or in track and middle orbit burden, a part contact with refractory slab in track, when shift motion, big with the friction of refractory slab, produce heavy resistance sensation during pedal operation, become and between the connection part, cause and rock or the main cause of deviation etc.
Summary of the invention
The present invention proposes in order to address this problem, and its objective is to provide a kind of improved piano shift unit, and it utilizes the mutual expelling force between the permanent magnet, give with the lining track with apparent buoyancy, shift motion can briskly be carried out swimmingly.
In order to achieve the above object, the shift unit of a kind of piano of the present invention, the framework group that keyboard and mechanical structure device body are installed can be slided on refractory slab, it is characterized in that, permanent magnet buried in refractory slab and framework group in the track, under state at interval, homopolarity toward each other respectively for they.Keyboard and mechanical structure device body can brisk displacements swimmingly.
In this structure, permanent magnet is embedded in the many places (being preferably uniformly-spaced) of refractory slab and lining track with certain interval.So good stability of shift motion.
Description of drawings
Fig. 1 cuts the planimetric map of expression for the major part part that will implement piano of the present invention.
Fig. 2 is the sectional view along the A-A line of Fig. 1.
Fig. 3 is the sectional view along the B-B knot of Fig. 1.
Symbol description: 1 keyboard; The physical construction pedestal of the part of 2 mechanical structure device bodies; 3 refractory slabs; 6 li tracks; 23,24 permanent magnets.
Embodiment
Below add that Fig. 3 illustrates embodiments of the invention on Fig. 1, Fig. 2 of in above-mentioned existing general example explanation, being utilized.Here, quote the existing explanation of Fig. 1, Fig. 2, with the identical parts of part in the explanation, the symbolic representation with identical illustrates the present invention.
Framework group at the physical construction pedestal 2 that keyboard 1 and mechanical structure device body are installed is slidably mounted in the shift unit of the piano on the refractory slab 3, permanent magnet 23 and permanent magnet 24, respectively under the relative state in surface, relative in surperficial 41 many places to the refractory slab 3 of surface 31 and framework group relatively of track 6 in burying underground.The lower surface of permanent magnet 23 and lining track 6 relative to surface 31 below become a face; The upper surface of permanent magnet 24 becomes a face with the relative of refractory slab 3 of framework group above surface 41.Therefore, the gap K that regulates is arranged between permanent magnet 23 and permanent magnet 24.In an embodiment, this gap is about 0.5～1mm.Permanent magnet 23 and permanent magnet 24 are that S is extremely to the S utmost point (being between the homopolarity).
Because this structure, the mutual expelling force of two permanent magnets 23,24 on the track 6 gives the apparent buoyancy that does not float with 32 1 of S utmost point opposite side portions in the utilization.
In the illustrated case, permanent magnet 23,24 is discoid, and they are respectively uniformly-spaced to be embedded in 5 places of refractory slab 3 and lining track 6.Therefore, in this embodiment, the diameter of discoidal permanent magnet 23 (24) is about 25mm, and thickness is about 5mm, and the distance (L) at the center of the center of permanent magnet 23 (24) and permanent magnets adjacent 23 (24) is about 25cm.
Yet it is shaped as square also passable.Like this, by the apparent buoyancy of track in giving 6, in shift motion the friction of opposition side part 32 and the opposition side part 42 of refractory slab 3 of track 6 reduce, keyboard and mechanical structure device body swimmingly can briskly be shifted.
Claims (3)
1. the shift unit of a piano, it is installed with the framework group of keyboard and mechanical structure device body, and the framework group can be slided on refractory slab, it is characterized in that, permanent magnet buried in refractory slab and framework group in the track, under state at interval, homopolarity toward each other respectively for they.
2. the shift unit of piano according to claim 1 is characterized in that, permanent magnet track in refractory slab and framework group is respectively under the state of a face, bury underground refractory slab and framework group in the track.
3. the shift unit of piano according to claim 1 and 2 is characterized in that, permanent magnet with certain interval, is embedded in the many places of refractory slab and lining track.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100375259A CN100524453C (en) | 2004-04-28 | 2004-04-28 | Piano shifting device |
| HK06104449.3A HK1084226A1 (en) | 2004-04-28 | 2006-04-12 | Shifting device for piano |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100375259A CN100524453C (en) | 2004-04-28 | 2004-04-28 | Piano shifting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1691132A true CN1691132A (en) | 2005-11-02 |
| CN100524453C CN100524453C (en) | 2009-08-05 |
Family
ID=35346518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100375259A Expired - Lifetime CN100524453C (en) | 2004-04-28 | 2004-04-28 | Piano shifting device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN100524453C (en) |
| HK (1) | HK1084226A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7342159B2 (en) * | 2004-04-28 | 2008-03-11 | Petrof, Spol. S.R.O. | Grand piano action mechanism |
| CN101681615B (en) * | 2007-04-09 | 2011-11-16 | 东洋钢琴制造株式会社 | Shift device for piano keyboard and method of adjusting shift device for piano keyboard |
| CN104505060A (en) * | 2014-12-19 | 2015-04-08 | 苏州公爵琴业有限公司 | Key bed for piano |
| CN110288961A (en) * | 2019-06-03 | 2019-09-27 | 湖南城市学院 | The regulating device of fingerboard and its method being adjusted using the device |
-
2004
- 2004-04-28 CN CNB2004100375259A patent/CN100524453C/en not_active Expired - Lifetime
-
2006
- 2006-04-12 HK HK06104449.3A patent/HK1084226A1/en not_active IP Right Cessation
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7342159B2 (en) * | 2004-04-28 | 2008-03-11 | Petrof, Spol. S.R.O. | Grand piano action mechanism |
| CN101681615B (en) * | 2007-04-09 | 2011-11-16 | 东洋钢琴制造株式会社 | Shift device for piano keyboard and method of adjusting shift device for piano keyboard |
| CN104505060A (en) * | 2014-12-19 | 2015-04-08 | 苏州公爵琴业有限公司 | Key bed for piano |
| CN110288961A (en) * | 2019-06-03 | 2019-09-27 | 湖南城市学院 | The regulating device of fingerboard and its method being adjusted using the device |
| CN110288961B (en) * | 2019-06-03 | 2021-05-07 | 湖南城市学院 | Piano keyboard adjusting device and adjusting method using same |
Also Published As
| Publication number | Publication date |
|---|---|
| HK1084226A1 (en) | 2006-07-21 |
| CN100524453C (en) | 2009-08-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203684080U (en) | Spherical bridge steel support | |
| CN100524453C (en) | Piano shifting device | |
| WO2007062770A3 (en) | Device for mounting a tank in a ship | |
| CN104685248B (en) | Lever system, the operation device of clutch and clutch apparatus | |
| CN100376464C (en) | Elevator roller guiding member | |
| CN101629409B (en) | Synchronous continuous top-pulling construction method for long and large steel box girder | |
| CN205529869U (en) | Bridge expansion joint device | |
| CN104603365A (en) | Sluice | |
| CN206928183U (en) | A kind of spheroid shape girder falling vibration absorption and isolation support | |
| CN102926397A (en) | Multifunctional hydraulic hanger for bridge prefabricated foundation construction and construction steps thereof | |
| KR20150040462A (en) | Floating Pier and Bridge Supported by such Floating Pier | |
| CN202954308U (en) | Antifriction guiding device for jacking large concrete box culvert | |
| CN201443042U (en) | Adjustable slide block used for pushing complex vertical curve beams | |
| CN211645944U (en) | Abutment rigid frame bridge structure with rigidity enlarges basis | |
| CN1343587A (en) | Fixable supporter sliding unidirectionally and its application method | |
| CN219658368U (en) | Guitar string bridge | |
| Hawley et al. | Plate update: Refreshing ideas for teaching plate tectonics | |
| CN218294394U (en) | Four-wheel drive conversion oil-saving mechanical hydraulic transmission for mine | |
| CN2555311Y (en) | Insulated shock preventing appts. of building | |
| Harrison | The early Umayyad settlement at Tabariyah: a case of yet another Miṣr? | |
| CN204781354U (en) | Shaped steel shear key connection structure of building movement joint | |
| Iyengar | Recent developments in mixed steel-concrete systems | |
| CN109235701A (en) | A kind of earthquake isolating equipment of fabricated shear wall | |
| CN2830502Y (en) | Curve steel bearing | |
| CN102285004A (en) | Precast beam support leveling structure and precast beam forming die |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: DE Ref document number: 1084226 Country of ref document: HK |
|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: GR Ref document number: 1084226 Country of ref document: HK |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171214 Address after: Jinggang Prefecture, Shizuoka Prefecture, Japan, Koku 1818 times Patentee after: Toyo Piano Mfg. Co.,Ltd. Address before: Shizuoka Patentee before: Toyo Piano Mfg. Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090805 |