CN2731633Y - Special swinging bush for piano key - Google Patents
Special swinging bush for piano key Download PDFInfo
- Publication number
- CN2731633Y CN2731633Y CN 200420093213 CN200420093213U CN2731633Y CN 2731633 Y CN2731633 Y CN 2731633Y CN 200420093213 CN200420093213 CN 200420093213 CN 200420093213 U CN200420093213 U CN 200420093213U CN 2731633 Y CN2731633 Y CN 2731633Y
- Authority
- CN
- China
- Prior art keywords
- piano key
- bush
- axle sleeve
- special
- piano
- 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.)
- Expired - Fee Related
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- Manufacture Of Macromolecular Shaped Articles (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The utility model relates to a special swinging bush for a piano key, which is made of the modified composite material of the polytetrafluoroethylene; the special swinging bush for the piano key is in an ellipse column shape, having the definite thickness of the bush and being provided with a big end up hole. The special swinging bush for the piano key is arranged between a central pin and the piano key. The utility model which adds the bush on the piano key utilizes the character of the modified materials of the polytetrafluoroethylene which has the advantages of excellent self lubricating property, high intensity abradability, extensive high and low temperature adaptability, and long-term aging resistance, which can improve the weatherability and the service life of the head of the piano.
Description
Technical field
The utility model relates to piano manufacturing technology field, is specifically related to the special-purpose swing of a kind of piano key axle sleeve, belongs to International Classification of Patents G10C3/00 " the mechanical hook-up parts of piano " field.
Background technology
In the prior art, can the unlikely again generation attrition accentuated of flexible swinging in order to guarantee piano key, its joint adopts bar to be coated with glue, in case but climate change, the area that particularly has a humid climate, the felt expansion of making moist, can cause the key swing dumb, influence is normally played.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of and replaces felt with axle sleeve, with the special-purpose swing of the piano key axle sleeve that improves weather resistance.
The purpose of this utility model is achieved through the following technical solutions.
The special-purpose swing of a kind of piano key axle sleeve is to adopt polytetrafluoroethylmodified modified compound substance to make, and described axle sleeve is the cylindroid shape, has certain half bush wall thickness, and is provided with up big and down small endoporus.
Described axle sleeve is installed between key and the middle pin.
Compared with prior art, the utility model has added axle sleeve on key.Utilize the good self lubricity, high-strength abrasion-proof of modified materials of polytetrafluoroethyland, high low temperature adaptability and long-term resistance to ag(e)ing widely, the weatherability and the serviceable life of improving qin head greatly.
Description of drawings
Fig. 1 is the front view of the special-purpose swing of the utility model piano key axle sleeve;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 embeds the synoptic diagram of position of piano key for axle sleeve.
Among the figure: 1, axle sleeve, 2, axle nail, 3, key.
Embodiment
As shown in Figure 1, 2, the special-purpose swing of piano key axle sleeve is a kind of die casting axle sleeve of polytetrafluoroethylmodified modified compound substance, has the external form of oval cylinder, certain half bush wall thickness, up big and down small endoporus formation.
As shown in Figure 3, during application, axle sleeve 1 is embedded between key 3 and the middle pin, be placed in the position, hole of axle nail 2.
Claims (2)
1, the special-purpose swing of a kind of piano key axle sleeve is to adopt polytetrafluoroethylmodified modified compound substance to make, and it is characterized in that: described axle sleeve is the cylindroid shape, has certain half bush wall thickness, and is provided with up big and down small endoporus.
2, according to the special-purpose swing of claims 1 described piano key axle sleeve, it is characterized in that: described axle sleeve is installed between key and the middle pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420093213 CN2731633Y (en) | 2004-09-09 | 2004-09-09 | Special swinging bush for piano key |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420093213 CN2731633Y (en) | 2004-09-09 | 2004-09-09 | Special swinging bush for piano key |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2731633Y true CN2731633Y (en) | 2005-10-05 |
Family
ID=35051958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420093213 Expired - Fee Related CN2731633Y (en) | 2004-09-09 | 2004-09-09 | Special swinging bush for piano key |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2731633Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112483550A (en) * | 2020-11-03 | 2021-03-12 | 德清佰诺乐器有限公司 | Piano shaft bracket shaft pin bushing based on polytetrafluoroethylene and processing technology thereof |
-
2004
- 2004-09-09 CN CN 200420093213 patent/CN2731633Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112483550A (en) * | 2020-11-03 | 2021-03-12 | 德清佰诺乐器有限公司 | Piano shaft bracket shaft pin bushing based on polytetrafluoroethylene and processing technology thereof |
| CN112483550B (en) * | 2020-11-03 | 2022-10-04 | 德清佰诺乐器有限公司 | Piano shaft bracket shaft pin bushing based on polytetrafluoroethylene and processing technology thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051005 Termination date: 20100909 |