CN109036337B - Reinforcing device for piano key pressing stopper - Google Patents
Reinforcing device for piano key pressing stopper Download PDFInfo
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- CN109036337B CN109036337B CN201811082034.4A CN201811082034A CN109036337B CN 109036337 B CN109036337 B CN 109036337B CN 201811082034 A CN201811082034 A CN 201811082034A CN 109036337 B CN109036337 B CN 109036337B
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- 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
- G10C3/06—Resonating means, e.g. soundboards or resonant strings; Fastenings thereof
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Abstract
The invention discloses a reinforcing device for a piano key pressing rail, which comprises a reinforcing strip fixed on the key pressing rail along the longitudinal direction of the key pressing rail, wherein the reinforcing strip is fixedly connected with the upper end of a screw rod through a connecting piece, and the lower end of the screw rod is fixedly connected with a middle wood of a key frame of a piano; the connecting piece is of an L-shaped structure, the horizontal section of the L-shaped structure is fixedly connected with the screw, the length of the horizontal section is adjustable, and the vertical section of the L-shaped structure is fixedly connected with the reinforcing bar; the lower end of the screw rod is screwed into the middle wood of the key frame through the tip and the threads, so that the fixed connection between the screw rod and the middle wood of the key frame is realized, and the length of the screw rod is adjustable. The reinforcing strip arranged longitudinally along the key pressing rail can play a powerful role in restraining the deformation of the reinforcing strip, so that the deformation of the key pressing rail is avoided, and the transverse swinging and deformation of the key pressing rail in long-term use are further limited through the connecting piece and the screw; meanwhile, the device can be conveniently installed through the function that the length of the connecting piece in the horizontal direction and the length of the screw rod in the longitudinal direction are adjustable.
Description
Technical Field
The invention relates to the field of piano manufacturing, in particular to a reinforcing device for a piano key pressing rail.
Background
The piano key pressing baffle is a straight rod which stretches across the upper part of the piano keyboard, and two ends of the piano key pressing baffle are fixedly connected with the side wall of the piano. The key pressing rail is positioned at the junction of the visible part and the hidden part of the keyboard, and is mainly used for limiting keys on the keyboard, the distance between the lower surface of the key pressing rail and a white key and the distance between the front surface of the key pressing rail and the end part of a black key are required to meet the requirements, and otherwise, the normal motion of the keys is influenced. The key pressing rail is long and is of a wood structure, and only two ends of the key pressing rail are fixed, so that the key pressing rail is easy to deform and does not meet the use requirement; even if the high-rigidity and non-deformable wood is adopted for manufacturing, the key pressing rail still can deform to a certain extent in the using process, and therefore the use of the piano is affected. Therefore, it is necessary to develop a device which is easy to adjust and install and has a good reinforcing effect against the above-mentioned problems of the conventional key press stopper without significantly increasing the manufacturing cost.
Disclosure of Invention
The present invention has been made to overcome the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide a reinforcement device for a key depression bar of a piano.
The technical scheme of the invention is as follows: a reinforcing device for a piano key pressing rail comprises a reinforcing strip fixed on the key pressing rail along the longitudinal direction of the key pressing rail, wherein the reinforcing strip is fixedly connected with the right end of a connecting piece, the left end of the connecting piece is fixedly connected with the upper end of a screw rod, and the lower end of the screw rod is fixedly connected with middle wood of a piano key frame after penetrating through a gap between a low-tone group key and a middle-tone group key on the rear side of the key pressing rail; the connecting piece is of an L-shaped structure, the horizontal section of the L-shaped structure is fixedly connected with the screw, the length of the horizontal section is adjustable, and the vertical section of the L-shaped structure is fixedly connected with the reinforcing strip; the lower end of the screw rod is provided with a tip and threads, the lower end of the screw rod is driven into the key frame middle wood through the tip and the threads, the screw rod is fixedly connected with the key frame middle wood, and the length of the screw rod is adjustable.
The connecting piece comprises a straight connecting strip and an L-shaped connecting strip, and a through hole is formed in the left end of the straight connecting strip; the screw comprises an upper rod body and a lower rod body, the upper end of the lower rod body is of a sleeve structure, the lower end of the upper rod body is sleeved in the upper end of the lower rod body, an adjusting bolt is arranged on the cylinder wall of the sleeve structure of the lower rod body, and the length of the screw is adjusted to a proper length and then locked through the adjusting bolt; the upper end of the upper rod body is provided with a threaded joint with the diameter smaller than the rod diameter of the upper rod body, the linear connecting strip is sleeved on the threaded joint through a through hole on the linear connecting strip and is fixed through a nut matched with the threaded joint, so that the linear connecting strip is fixedly connected with the screw rod; the right end of the straight-line-shaped connecting strip is a hollow cavity, the horizontal strip at the left end of the L-shaped connecting strip is inserted into the cavity, and the relative position between the straight-line-shaped connecting strip and the L-shaped connecting strip is locked by an adjusting screw arranged on the outer wall of the cavity, wherein the straight-line-shaped connecting strip, the adjusting screw and the horizontal strip form a horizontal section with adjustable length of an L-shaped structure of the connecting piece; the vertical strip at the right end of the L-shaped connecting strip is fixedly connected with the reinforcing strip through a first screw; and the reinforcing strip is fixedly connected with the key pressing block through a second screw.
The number of the second screws is multiple, the second screws are divided into an upper row and a lower row, and each row is arranged along the longitudinal direction of the key pressing rail.
The lower rod body of the screw rod is provided with a hexagonal prism structure which is used for facilitating the rotation of the lower rod body, so that the lower end of the lower rod body can conveniently attack wood in the key frame, and the axis of the hexagonal prism structure is coincided with the axis of the lower rod body.
And a gasket is arranged between the nut and the linear connecting strip.
The connecting piece, the screw rod and the reinforcing strip are all made of steel materials which are not easy to deform.
The invention has the beneficial effects that: the embodiment of the invention provides a reinforcing device for a piano key pressing rail, which comprises a reinforcing strip fixed on the key pressing rail along the longitudinal direction of the key pressing rail, wherein the reinforcing strip is fixedly connected with the right end of a connecting piece, the left end of the connecting piece is fixedly connected with the upper end of a screw rod, and the lower end of the screw rod is fixedly connected with a middle wood of a key frame of a piano after penetrating through a gap between a low-tone group key and a middle-high tone group key on the rear side of the key pressing rail; wherein the connecting piece is L shape structure, and the length of the horizontal segment and the screw rod of L shape structure is all adjustable. The reinforcing strip arranged along the longitudinal direction of the key pressing rail can play a powerful role in restraining the deformation of the reinforcing strip, so that the deformation of the key pressing rail is avoided as much as possible, and the transverse swinging and the deformation of the key pressing rail in long-term use are further limited through the connecting piece and the screw; meanwhile, the device can be conveniently installed through the length-adjustable function of the connecting piece in the horizontal direction and the length-adjustable function of the screw rod in the longitudinal direction, so that the reinforcing effect on the key pressing stop is better realized.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged, fragmentary, top plan view of FIG. 1, indicated generally at I;
fig. 3 is a schematic view showing the position of the main body of the reinforcing apparatus of the present invention on the whole piano.
Detailed Description
One embodiment of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the scope of the invention is not limited to the embodiment.
As shown in fig. 1 and 2, the embodiment of the present invention provides a reinforcement device for a key depression bar of a piano, wherein the key depression bar is used for limiting keys on a keyboard, and the distance between the lower surface of the key depression bar and a white key 8 and the distance between the front surface of the key depression bar and the end of a black key 9 are required, otherwise, the normal motion of the keys is affected. The device specifically comprises a reinforcing strip 3 fixed on a key pressing rail 1 along the longitudinal direction of the key pressing rail 1, wherein the reinforcing strip 3 is fixedly connected with the right end of a connecting piece 2, the left end of the connecting piece 2 is fixedly connected with the upper end of a screw rod 6, and the lower end of the screw rod 6 is fixedly connected with a middle wood 10 of a key frame of a piano after penetrating through a gap between a low tone group key 11 and a middle and high tone group key on the rear side of the key pressing rail 1; the connecting piece 2 is of an L-shaped structure, the horizontal section of the L-shaped structure is fixedly connected with the screw 6, the length of the horizontal section is adjustable, and the vertical section of the L-shaped structure is fixedly connected with the reinforcing strip 3; the lower end of the screw rod 6 is provided with a tip 6-2-1 and a thread 6-2-2, the lower end of the screw rod 6 is made to penetrate into the key frame middle wood 10 through the tip 6-2-1 and the thread 6-2-2, the screw rod 6 is fixedly connected with the key frame middle wood 10, and the length of the screw rod 6 is adjustable.
In the embodiment, the reinforcing strip arranged longitudinally along the key pressing rail can play a powerful role in restraining the deformation of the reinforcing strip, so that the deformation of the key pressing rail is avoided as much as possible, and the transverse swinging and deformation of the key pressing rail in long-term use are further limited through the connecting piece and the screw; meanwhile, the device can be conveniently installed through the length-adjustable function of the connecting piece in the horizontal direction and the length-adjustable function of the screw rod in the longitudinal direction, so that the reinforcing effect on the key pressing stop is better realized.
Furthermore, the connecting piece 2 comprises a straight connecting strip 2-1 and an L-shaped connecting strip 2-2, and a through hole is formed in the left end of the straight connecting strip 2-1; the screw 6 comprises an upper rod body 6-1 and a lower rod body 6-2, the upper end of the lower rod body 6-2 is of a sleeve structure, the lower end of the upper rod body 6-1 is sleeved in the upper end of the lower rod body 6-2, an adjusting bolt 6-3 is arranged on the wall of the sleeve structure of the lower rod body 6-2, and the length of the screw 6 is locked after being adjusted to a proper length through the adjusting bolt 6-3; the upper end of the upper rod body 6-1 is provided with a threaded joint 6-1-1 with the diameter smaller than the rod diameter of the upper rod body, the straight connecting strip 2-1 is sleeved on the threaded joint 6-1-1 through a through hole on the straight connecting strip and is fixed through a nut 7 matched with the threaded joint 6-1-1, and the straight connecting strip 2-1 is fixedly connected with a screw rod 6; the right end of the straight connecting strip 2-1 is a hollow cavity 2-1-1, the horizontal strip 2-2-2 at the left end of the L-shaped connecting strip 2-2 is inserted into the cavity 2-1-1, and the relative position between the straight connecting strip 2-1 and the L-shaped connecting strip 2-2 is locked through an adjusting screw 2-3 arranged on the outer wall of the cavity 2-1-1, wherein the straight connecting strip 2-1, the adjusting screw 2-3 and the horizontal strip 2-2-2 form a horizontal section with an L-shaped structure of the connecting piece 2 and adjustable length; the vertical bar 2-2-1 at the right end of the L-shaped connecting bar 2-2 is fixedly connected with the reinforcing bar 3 through a first screw 5; the reinforcing bar 3 is fixedly connected with the key pressing rail 1 through a second screw 4. Fig. 3 is a schematic view of the position of the present invention reinforcement device on the entire piano, wherein the circle designated by reference character a is the specific position of the body of the present invention reinforcement device in the piano, with the body portion of the reinforcement device being located inside the piano.
Further, the number of the second screws 4 is multiple, the multiple second screws 4 are divided into upper and lower rows, and each row is arranged along the longitudinal direction of the key pressing rail 1.
Further, the lower rod body 6-2 of the screw rod 6 is provided with a hexagonal prism structure 13 for facilitating the rotation of the lower rod body 6-2, so that the lower end of the lower rod body 6-2 can conveniently tap the wood 10 in the key frame, and the axis of the hexagonal prism structure 13 is coincident with the axis of the lower rod body 6-2.
Further, a gasket 12 is arranged between the nut 7 and the straight connecting strip 2-1.
Furthermore, the connecting piece 2, the screw rod 6 and the reinforcing strip 3 are all made of steel materials which are not easy to deform.
In summary, the reinforcing device for a piano key press rail provided by the embodiment of the invention comprises a reinforcing strip fixed on the key press rail along the longitudinal direction of the key press rail, the reinforcing strip is fixedly connected with the right end of a connecting piece, the left end of the connecting piece is fixedly connected with the upper end of a screw rod, and after the screw rod passes through a gap between a low-pitch group key and a medium-pitch group key on the rear side of the key press rail, the lower end of the screw rod is fixedly connected with a middle wood of a key frame of a piano; wherein the connecting piece is L shape structure, and the length of the horizontal segment and the screw rod of L shape structure is all adjustable. The reinforcing strip arranged longitudinally along the key pressing rail can play a powerful role in restraining the deformation of the reinforcing strip, so that the deformation of the key pressing rail is avoided as much as possible, and the transverse swinging and deformation of the key pressing rail in long-term use are further limited through the connecting piece and the screw; meanwhile, the device can be conveniently installed through the function of adjusting the length of the connecting piece in the horizontal direction and the length of the screw rod in the longitudinal direction, so that the reinforcing effect on the key pressing stop is better realized.
The above disclosure is only for a few specific embodiments of the present invention, however, the present invention is not limited to the above embodiments, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.
Claims (5)
1. The reinforcing device for the piano key pressing rail is characterized by comprising a reinforcing strip (3) which is fixed on the key pressing rail (1) along the longitudinal direction of the key pressing rail (1), wherein the reinforcing strip (3) is fixedly connected with the right end of a connecting piece (2), the left end of the connecting piece (2) is fixedly connected with the upper end of a screw rod (6), and the lower end of the screw rod (6) is fixedly connected with a middle wood (10) of a key frame of a piano after penetrating through a gap between a low-tone group key (11) and a middle-high-tone group key on the rear side of the key pressing rail (1); the connecting piece (2) is of an L-shaped structure, the horizontal section of the L-shaped structure is fixedly connected with the screw (6), the length of the horizontal section is adjustable, and the vertical section of the L-shaped structure is fixedly connected with the reinforcing strip (3); the lower end of the screw rod (6) is provided with a tip (6-2-1) and a thread (6-2-2), the lower end of the screw rod (6) is driven into the key frame middle wood (10) through the tip (6-2-1) and the thread (6-2-2), so that the screw rod (6) is fixedly connected with the key frame middle wood (10), and the length of the screw rod (6) is adjustable; the connecting piece (2) comprises a straight connecting strip (2-1) and an L-shaped connecting strip (2-2), and a through hole is formed in the left end of the straight connecting strip (2-1); the screw rod (6) comprises an upper rod body (6-1) and a lower rod body (6-2), the upper end of the lower rod body (6-2) is of a sleeve structure, the lower end of the upper rod body (6-1) is sleeved in the upper end of the lower rod body (6-2), an adjusting bolt (6-3) is arranged on the cylinder wall of the sleeve structure of the lower rod body (6-2), and the length of the screw rod (6) is adjusted to be proper and then locked through the adjusting bolt (6-3); the upper end of the upper rod body (6-1) is provided with a threaded joint (6-1-1) with the diameter smaller than the rod diameter of the upper rod body, the straight-line-shaped connecting strip (2-1) is sleeved into the threaded joint (6-1-1) through a through hole in the straight-line-shaped connecting strip and is fixed through a nut (7) matched with the threaded joint (6-1-1), and the straight-line-shaped connecting strip (2-1) is fixedly connected with the screw rod (6); the right end of the straight connecting strip (2-1) is a hollow cavity (2-1-1), the horizontal strip (2-2-2) at the left end of the L-shaped connecting strip (2-2) is inserted into the cavity (2-1-1), and the relative position between the straight connecting strip (2-1) and the L-shaped connecting strip (2-2) is locked through an adjusting screw (2-3) arranged on the outer wall of the cavity (2-1-1), wherein the straight connecting strip (2-1), the adjusting screw (2-3) and the horizontal strip (2-2-2) form a horizontal section with adjustable length of an L-shaped structure of the connecting piece (2); the vertical bar (2-2-1) at the right end of the L-shaped connecting bar (2-2) is fixedly connected with the reinforcing bar (3) through a first screw (5); the reinforcing strip (3) is fixedly connected with the key pressing rail (1) through a second screw (4).
2. A reinforcing apparatus for a piano key-press rail as claimed in claim 1, wherein said second screw (4) is plural in number, and the plural second screws (4) are divided into upper and lower rows each arranged in a longitudinal direction of said key-press rail (1).
3. A reinforcing apparatus for a piano key press stop according to claim 1, wherein the lower body (6-2) of said screw (6) is provided with a hexagonal prism structure (13) for facilitating the rotation of the lower body (6-2) and thereby facilitating the tapping of the lower end of the lower body (6-2) into the wood (10) of said key frame, said hexagonal prism structure (13) having an axis coincident with an axis of the lower body (6-2).
4. A reinforcing apparatus for a piano key press rail as claimed in claim 1, wherein a spacer (12) is further provided between said nut (7) and said in-line connecting strip (2-1).
5. A reinforcing apparatus for a piano key press rail as claimed in claim 1, wherein said connecting member (2), screw (6) and reinforcing bar (3) are made of steel material which is not easily deformed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811082034.4A CN109036337B (en) | 2018-09-17 | 2018-09-17 | Reinforcing device for piano key pressing stopper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811082034.4A CN109036337B (en) | 2018-09-17 | 2018-09-17 | Reinforcing device for piano key pressing stopper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109036337A CN109036337A (en) | 2018-12-18 |
| CN109036337B true CN109036337B (en) | 2023-01-31 |
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ID=64622210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811082034.4A Active CN109036337B (en) | 2018-09-17 | 2018-09-17 | Reinforcing device for piano key pressing stopper |
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| Country | Link |
|---|---|
| CN (1) | CN109036337B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008126713A1 (en) * | 2007-04-09 | 2008-10-23 | Toyo Piano Mfg. Co., Ltd. | Shift device for piano keyboard and method of adjusting shift device for piano keyboard |
| CN103606368A (en) * | 2013-10-31 | 2014-02-26 | 北京珠江钢琴制造有限公司 | Reinforcing device of piano key press baffle |
| CN104712998A (en) * | 2013-12-12 | 2015-06-17 | 西安麟字半导体照明有限公司 | LED landscape lamp with adjustable tripod |
| CN206412059U (en) * | 2017-01-13 | 2017-08-15 | 佳星展业（天津）有限公司 | One kind exhibition tool support |
-
2018
- 2018-09-17 CN CN201811082034.4A patent/CN109036337B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008126713A1 (en) * | 2007-04-09 | 2008-10-23 | Toyo Piano Mfg. Co., Ltd. | Shift device for piano keyboard and method of adjusting shift device for piano keyboard |
| CN103606368A (en) * | 2013-10-31 | 2014-02-26 | 北京珠江钢琴制造有限公司 | Reinforcing device of piano key press baffle |
| CN104712998A (en) * | 2013-12-12 | 2015-06-17 | 西安麟字半导体照明有限公司 | LED landscape lamp with adjustable tripod |
| CN206412059U (en) * | 2017-01-13 | 2017-08-15 | 佳星展业（天津）有限公司 | One kind exhibition tool support |
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| Publication number | Publication date |
|---|---|
| CN109036337A (en) | 2018-12-18 |
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