CN111261130A

CN111261130A - Independent mounting and adjusting double-layer key thumb piano

Info

Publication number: CN111261130A
Application number: CN201811461756.0A
Authority: CN
Inventors: 罗锦铠
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-12-02
Filing date: 2018-12-02
Publication date: 2020-06-09

Abstract

The invention discloses a double-layer key thumb piano capable of being independently installed and adjusted, which uses an independent supporting mechanism and a fixing mechanism to enable each key to be independently installed and adjusted; keys with one specification can be used, keys with multiple specifications can also be used, and the keys are more convenient to manufacture, install and replace; the alignment of playing ends of the keys can be realized by various scale arrangements, and the hand feeling is more comfortable; the tension of the keys can be adjusted to solve the problem when noise and mute sound appear.

Description

Independent mounting and adjusting double-layer key thumb piano

Technical Field

The invention relates to the technical field of music equipment, in particular to an improved thumb piano.

Background

The thumb piano is a traditional instrument from africa and generally comprises a soundbox or soundboard and 1 to 2 rows of resilient steel plates. The tail end of the steel sheet is stirred by the thumbs of two hands, so that the steel sheet vibrates to make a sound. The existing thumb piano has the problems that keys are formed by installing steel sheets with various lengths, the manufacturing specifications are excessive, playing ends are not aligned, the middle is long, two sides are short, one side is long, the other side is short, playing hand feeling is uncomfortable, noise and mute are difficult to adjust, and the keys are troublesome to install and replace.

Disclosure of Invention

The invention provides a double-layer key thumb piano capable of being independently installed and adjusted, aiming at solving the problems that keys are too many in manufacturing specifications, playing ends are not aligned and uncomfortable, adjustment is difficult when noise and mute occur, the keys are troublesome to install and replace and the like in the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows: each key can be independently installed and adjusted by using an independent supporting mechanism and a fixing mechanism; the horizontal direction alignment installation of key performance end, the installation of retreating is made to upper key.

Measuring the effective vibration length of each tone in the used scale by using the existing key specification parameters, aligning the effective vibration length with the playing end of the key, obtaining the position of a fulcrum at the front end of the key, and offsetting the fulcrum backwards by a same distance to obtain the position of a fulcrum at the rear end; a point with a fixed proportion, such as a middle point, is taken between the front end fulcrum and the rear end fulcrum, and the position of the key pressing fixed point is obtained; taking the scale from left to right and ranging from bass to treble as an example, the front end fulcrum connecting line, the rear end fulcrum connecting line and the pressing fixed point connecting line are three parallel lines which incline from the upper left corner to the lower right corner; according to the retreating distance of the upper layer key, the three parallel lines are integrally deviated by the distance, and then a front end fulcrum connecting line, a rear end fulcrum connecting line and a pressing fixed point connecting line of the upper layer key are obtained; the long side of the bottom plate is parallel to the connecting line, and the short side of the bottom plate is parallel to the keys, so that the plane of the bottom plate is in a parallelogram shape; and (4) arranging a positioning hole on the bottom plate according to the pressing fixing point position to obtain the mounting position of the fixing mechanism.

Other scale arrangements can achieve the same effect using the above method.

The fixing mechanism comprises a single block, a stand column and an inverted T-shaped column; fixing holes are formed in the bottoms of the single block and the upright post, and the fixing piece penetrates through the positioning hole of the bottom plate and enters the fixing hole to realize connection of the single block or the upright post and the bottom plate; the single piece and the waist part of the upright post are provided with large through holes for the keys to pass through, the top parts of the single piece and the upright post are provided with adjusting holes, the adjusting piece passes through the adjusting holes to touch the keys in the large through holes, and the tension of the keys is changed by changing the pressure applied to the keys by the adjusting piece; the difference of the inverted T-shaped column lies in that the bottom of the inverted T-shaped column is not provided with a fixed hole, a circle of column cap is added, the inverted T-shaped column penetrates through the positioning hole from bottom to top during installation, and other characteristics are the same as those of the upright column.

The single piece has two specifications of height and short, wherein the high single piece is provided with the upper-layer key, and the short single piece is provided with the lower-layer key; the bottom of the single block is provided with at least two fixing holes.

Foretell stand and fall T post all have two kinds of specifications of height, short installation upper strata key, short installation lower floor key.

The supporting mechanism has the function of providing a front end fulcrum and a rear end fulcrum, and has four solutions.

According to the first supporting mechanism solution, two small through holes are transversely drilled at two ends of a large through hole of a single block close to an outlet, a cross rod penetrates through the small through holes to be implanted into the single block, the cross rod forms a front end fulcrum and a rear end fulcrum, the front end fulcrum and the rear end fulcrum are integrated with the single block, and the single block is connected to a bottom plate to be capable of mounting keys; the single block can be directly installed with the key without being embedded into a cross bar and a front end fulcrum and a rear end fulcrum.

In the second solution of the supporting mechanism, the front end fulcrum and the rear end fulcrum of the same key are realized on one part, namely, an integral supporting piece, the side vertical surface of the integral supporting piece is in a U shape, and a positioning hole is formed in the horizontal bottom surface of the integral supporting piece and used for a fixing piece to penetrate through so as to be connected with the upright post; notches are arranged at the front end fulcrum and the rear end fulcrum of the piano keyboard and are used for preventing the piano keyboard from moving left and right; the integrated supporting piece has two specifications of a high key and a low key, wherein the high key is used for mounting the upper-layer key, and the low key is used for mounting the lower-layer key; when the integrated support piece is matched with the inverted T-shaped column for use, the integrated support piece is installed by penetrating through the limiting hole of the bottom plate from bottom to top instead.

In the third solution of the supporting mechanism, the front end fulcrums of the upper and lower layers of keys are combined into one part, namely the front end supporting piece, and the rear end fulcrums are also combined into one part, namely the rear end supporting piece; the rear end fulcrum is obtained by integrally offsetting the front end fulcrum, so that the front end support and the rear end support can use parts with the same specification, the cross section of the front end support and the rear end support are in a J shape, piano key holes for keys to pass through are formed in the higher vertical surface of the front end support, the horizontal bottom surface of the front end support is in a parallelogram shape, and mounting holes for mounting screws to pass through are formed in the horizontal bottom surface of the front end support; notches are arranged at the front end fulcrum and the rear end fulcrum of the piano keyboard and are used for preventing the piano keyboard from moving left and right; when the inverted T-shaped column is matched with the front end supporting piece and the rear end supporting piece for use, the inverted T-shaped column penetrates through the positioning hole of the bottom plate from bottom to top to be installed.

In the fourth solution of the supporting mechanism, the front end fulcrums of the upper and lower layers of keys are combined into one part, namely the front end supporting piece, the rear end fulcrums are combined and combined with the bottom plate into one part, namely the L-shaped supporting piece; the front end support is the same as solution three; the cross section of the L-shaped support piece is in an L shape, piano key holes are formed in the vertical surface of the L-shaped support piece for the keys to pass through, the horizontal bottom surface of the L-shaped support piece is in a parallelogram shape, mounting holes are formed for mounting screws to pass through, positioning holes are formed for the fixing piece to pass through, and notches are formed in supporting points at the rear end of the L-shaped support piece and used for preventing the keys from moving left and right; when the inverted T-shaped column is matched with the L-shaped support piece for use, the inverted T-shaped column penetrates through the positioning hole of the L-shaped support piece from bottom to top to be installed.

The mounting surface of the resonance body is provided with grooves for the fixing part, the inverted T-shaped column and the integrated supporting part in advance, mounting screws penetrate through mounting holes in the front end supporting part, the rear end supporting part, the L-shaped supporting part and the bottom plate, the supporting mechanism and the fixing mechanism are mounted on the resonance body, then the keys are sequentially mounted and aligned with the playing end, and the stress of each key is changed by independently changing the pressure applied to the key by each adjusting part by using a corresponding tool, so that the problems of noise and mute are solved, and the keys are required to be replaced and the same operation is performed on the adjusting parts.

The corresponding tools refer to a hexagonal key, a wrench, a screwdriver and the like corresponding to the adjusting piece.

The keys described above include, but are not limited to, tongue-shaped keys and round bar-shaped keys.

The above-mentioned upright column and inverted T-shaped column include but are not limited to cylindrical column, elliptic cylindrical column, square column, hexahedral column and octahedral column.

The key holes include, but are not limited to, square holes, circular holes, and polygonal holes.

The adjusting member includes, but is not limited to, a hexagon socket headless screw, a hexagon socket head cap screw, a cross screw, and a straight screw.

The invention has the advantages that the keys with one specification can be used, and the keys with various specifications can also be used, so that the keys are more convenient to manufacture, install and replace; the alignment of playing ends of the keys can be realized by various scale arrangements, and the hand feeling is more comfortable; the stress of the keys can be adjusted to solve the problem when noise and mute sound appear.

Drawings

The invention is further illustrated by the following figures and examples.

FIG. 1 is a top plan view of a monolithic article;

FIG. 2 is a cross-sectional view of the monolith taken along line A-A of FIG. 1;

FIG. 3 is a schematic view of a one-piece part installation;

FIG. 4 is a schematic view of a monolithic crossbar-less plate part installation;

FIG. 5 is a schematic view of a one-piece finished product;

FIG. 6 is a top view of a column-type integrated supporting plate;

FIG. 7 is a cross-sectional view of the column-type integrated supporting plate taken along line B-B of FIG. 6;

FIG. 8 is a schematic view of the installation of the column type integrated supporting plate parts;

FIG. 9 is a schematic view of a finished product of a column-type integrated supporting plate;

FIG. 10 is a top view of an inverted T-post;

FIG. 11 is a cross-sectional view of the inverted T-post along line C-C of FIG. 10;

FIG. 12 is a schematic view of an inverted T-post component installation;

FIG. 13 is a schematic view of an inverted T-pillar finish;

FIG. 14 is a top view of the post-type front and rear support plates;

FIG. 15 is a cross-sectional view of the post type front and rear support plates taken along line D-D of FIG. 14;

FIG. 16 is a schematic view of the installation of the components of the column type front and rear supporting plates;

FIG. 17 is a schematic view of a post-type front and rear supporting plate;

FIG. 18 is a top view of a post type L-shaped support plate;

FIG. 19 is a cross-sectional view of the post type L-shaped support plate taken along line E-E of FIG. 18;

FIG. 20 is a schematic view of the installation of the column type L-shaped supporting plate parts;

FIG. 21 is a schematic view of a completed post-type L-shaped supporting plate;

in the figure, 1, a resonance body, 2, keys, 3, a bottom plate, 4, mounting holes, 5, mounting screws, 6, positioning holes, 7, fixing holes, 8, fixing pieces, 9, adjusting holes, 10 adjusting pieces, 11, large through holes, 12, small through holes, 13, a cross rod, 14, a single block, 15, a stand column, 16, an integrated supporting piece, 17, a notch, 18, an inverted T-shaped column, 19, a limiting hole, 20, a front end supporting piece, 21, a rear end supporting piece, 22, an L-shaped supporting piece, 23, a key hole and 24 grooves are formed.

Detailed Description

[ example 1 ]

The crossbar 13 is pre-implanted in the monobloc 14; the fixing piece 8 penetrates through the positioning hole 6 of the bottom plate 3 from bottom to top and enters the fixing hole 7 at the bottom of each single block 14, and the connection of each single block 14 and the bottom plate 3 is completed; the single block 14 has two specifications of height and short, the short single block is arranged in the front row and is provided with the lower layer of keys 2, and the high single block is arranged in the rear row and is provided with the upper layer of keys 2; the part of the fixing piece 8, which protrudes out of the bottom plate 3, is aligned into the groove 24 of the resonance body 1, passes through the mounting hole 4 of the bottom plate 3 by using a mounting screw 5 and is implanted into the resonance body 1, and the connection between the bottom plate 3 with the single block 14 and the resonance body 1 is completed; the keys 2 sequentially pass through the large through holes 11 from the positions above the cross bar 13 of the single block 14 to be aligned with the playing end, the adjusting pieces 10 pass through the adjusting holes 9 to touch the keys 2, the tone of each key 2 is calibrated by using a tuner, the vibration length of the keys 2 and the pressure of the adjusting pieces 10 are adjusted by using corresponding tools, and the installation is completed. As shown in fig. 1, 2, 3, and 5.

[ example 2 ]

The installation method is the same as in example 1, except that the monoblock 14 does not have the implant beam 13, as shown in FIG. 4.

[ example 3 ]

The fixing piece 8 penetrates through the positioning holes 6 of the bottom plate 3 and the integrated supporting piece 16 from bottom to top and enters the fixing hole 7 at the bottom of the upright post 15, and the connection of each upright post 15 and the integrated supporting piece 16 with the bottom plate 3 is completed; the upright post 15 and the integrated support piece 16 are both of high and low specifications, the lower keys 2 are arranged on the front row in a short mode, and the upper keys 2 are arranged on the rear row in a high mode; the part of the fixing piece 8, which protrudes out of the bottom plate 3, is aligned into the groove 24 of the resonance body 1, passes through the mounting hole 4 of the bottom plate 3 by using a mounting screw 5, and is implanted into the resonance body 1 to complete the connection with the resonance body 1; the keys 2 sequentially pass through the large through holes 11 without going beyond the notches 17 and align with the playing end, and the adjusting pieces 10 pass through the adjusting holes 9 to touch the keys 2; the tone of each key 2 is corrected using a tuner, and the length of vibration of the key 2 and the pressure of the adjusting member 10 are adjusted using corresponding tools, completing the installation. As shown in fig. 6, 7, 8 and 9.

[ example 4 ]

Firstly, the integrated support piece 16 penetrates through the limiting hole 19 of the bottom plate 3 from bottom to top, then the inverted T-shaped columns 18 sequentially penetrate through the integrated support piece 16 and the positioning hole 6 of the bottom plate 3 from bottom to top, and connection of each inverted T-shaped column 18, the integrated support piece 16 and the bottom plate 3 is completed; the inverted T-shaped column 18 and the integrated support 16 are of high and low specifications, the keys 2 on the lower layer are installed on the short front row, and the keys 2 on the upper layer are installed on the high rear row; the fixing piece 8 and the part of the integral supporting piece 16 protruding out of the bottom plate 3 are aligned into the groove 24 of the resonance body 1, and are implanted into the resonance body 1 by using a mounting screw 5 to pass through the mounting hole 4 of the bottom plate 3, so as to complete the connection with the resonance body 1; the keys 2 sequentially pass through the large through holes 11 of the inverted T-shaped columns 18, align with the playing ends and do not go beyond the notches 17, and the adjusting pieces 10 pass through the adjusting holes 9 and touch the keys 2; the tone of each key 2 is corrected using a tuner, and the length of vibration of the key 2 and the pressure of the adjusting member 10 are adjusted using corresponding tools, completing the installation. As shown in fig. 10, 11, 12 and 13.

[ example 5 ]

The fixing piece 8 penetrates through the positioning hole 4 of the bottom plate 3 from bottom to top and enters the fixing hole 7 at the bottom of the upright post 15, and the connection between each upright post 15 and the bottom plate 3 is completed; the upright post 15 has two specifications of height and height, wherein the lower keys 2 are arranged on the front row, and the upper keys 2 are arranged on the rear row with the height; the part of the fixing piece 8 protruding out of the bottom plate 3 is aligned into the groove 24 of the resonance body 1, passes through the front end support 20, the rear end support 21 and the mounting hole 4 of the bottom plate 3 by using the mounting screw 5, is implanted into the resonance body 1, and is connected with the resonance body 1; the upper-layer keys 2 penetrate through the large through holes 11 and align with the playing ends without exceeding the notches 17, the lower-layer keys 2 sequentially penetrate through the key holes 23, the large through holes 11 and the key holes 23 and align with the playing ends, and the adjusting pieces 10 penetrate through the adjusting holes 9 and touch the keys 2; the tone of each key 2 is corrected using a tuner, and the length of vibration of the key 2 and the pressure of the adjusting member 10 are adjusted using corresponding tools, completing the installation. As shown in fig. 14, 15, 16, and 17.

[ example 6 ]

The installation method is similar to that of embodiment 5, except that the upright post 15 is replaced by an inverted T-shaped post 18, and the inverted T-shaped post 18 is installed through the positioning hole 6 of the bottom plate 3 from bottom to top without using a fixing piece.

[ example 7 ]

The mounting method is similar to that of embodiment 5 except that the rear end support 21 and the bottom plate 3 are replaced with L-shaped supports 22. As shown in fig. 18, 19, 20 and 21.

[ example 8 ]

The installation method is similar to that of embodiment 7, except that the upright post 15 is replaced with an inverted T-shaped post 18, and the inverted T-shaped post 18 is installed through the positioning hole 6 of the L-shaped support 22 from bottom to top without using the fixing member 8.

Claims

1. The utility model provides an independently install and adjust double-deck key thumb musical instrument comprises resonance body (1), double-deck key (2), fixed establishment, supporting mechanism and installation mechanism, its characterized in that: the fixing mechanism and the supporting mechanism of each key (2) can be independently installed, and each fixing mechanism can be independently adjusted; the fixing mechanism comprises a single block (14), an upright post (15) and an inverted T-shaped post (18); fixing holes (7) are formed in the bottoms of the single block (14) and the upright post (15), and a fixing piece (8) penetrates through the positioning hole (6) of the bottom plate (3) to enter the fixing hole (7), so that the connection between the single block (14) or the upright post (15) and the bottom plate (3) is realized; the single block (14) and the waist of the upright post (15) are provided with large through holes (11) for the keys (2) to pass through, the tops of the single block and the upright post are provided with adjusting holes (9), the adjusting pieces (10) pass through the adjusting holes (9) to touch the keys (2) in the large through holes (11), and the tension of the keys (2) is changed by changing the pressure applied to the keys (2) by the adjusting pieces (10); the difference of the inverted T-shaped column (18) is that the bottom of the inverted T-shaped column is not provided with a fixing hole (7), a circle of column caps are added, the inverted T-shaped column penetrates through the positioning hole (6) from bottom to top during installation, and other characteristics are the same as those of the upright column (15); the supporting mechanism provides a front end fulcrum and a rear end fulcrum; the cross bar (13) penetrates through the small through hole (12) of the single block (14) and is implanted into the single block (14), so that a front end fulcrum, a rear end fulcrum and the single block (14) are integrated, or an integrated support (16) is used for providing the front end fulcrum and the rear end fulcrum, or an independent front end support (20) and a rear end support (21) are used for providing the front end fulcrum and the rear end fulcrum; notches (17) are arranged at the supporting points of the integrated supporting piece (16), the front end supporting piece (20) and the rear end supporting piece (21); the horizontal direction alignment installation of key (2) performance end, upper key (2) do and retreat the installation.

2. The independently mounted and tuned double-layer piano key thumb according to claim 1, wherein the single piece (14), upright post (15), inverted T-shaped post (18), integral support (16) are of both tall and short size, tall mounted upper piano key (2) and short mounted lower piano key (2).

3. The independently adjustable double-piano key thumb piano of claim 1, wherein the bottom of said single piece (14) has at least two fixing holes (7); the single block (14) is not embedded into the cross bar (13), a front end fulcrum and a rear end fulcrum are not needed, and the key (2) can be directly installed for use.

4. The independently adjustable double-layer piano key according to claim 1, wherein the integral support (16) is U-shaped in side elevation, and has positioning holes (6) in the horizontal bottom for the fixed member (8) to pass through, and notches (17) at the front and rear points for preventing the key (2) from being dislocated.

5. The independently adjustable double-layer piano with keys and thumbs as claimed in claim 1, wherein the front end support (20) and the rear end support (21) are made of same-specification parts, the cross section of the front end support is in a shape of letter J, the higher vertical surface of the front end support is provided with a piano key hole (23) for the key (2) to pass through, the horizontal bottom surface of the front end support is in a shape of parallelogram, and a mounting hole (4) for a mounting screw (5) to pass through is formed.

6. The piano with double keys and a separate adjustable function according to claim 1, wherein the plane of the bottom plate (3) is a parallelogram, the bottom plate is provided with mounting holes (4) for mounting screws (5) to pass through, positioning holes (6) for fixing members (8) to pass through, and the positions of the holes (6) can be changed according to the arrangement requirements of the musical scales of the keys (2).

7. The rear end support according to claim 5, wherein the rear end support (21) is combined with the bottom plate (3) of claim 6 into one part, namely an L-shaped support (22), the cross section of the L-shaped support is L-shaped, the vertical surface of the L-shaped support is provided with a piano key hole (23) for a key (2) to pass through, the horizontal bottom surface of the L-shaped support is parallelogram, the mounting hole (4) is provided for a mounting screw (5) to pass through, and the positioning hole (6) is provided for a fixing piece (8) to pass through.

8. The independently adjustable double-layer piano with keys as claimed in claim 1, wherein the inverted T-shaped pillar (18) is installed through the positioning hole (6) of the bottom plate (3) from bottom to top when used in combination with the front end support (20) and the rear end support (21) or when the inverted T-shaped pillar (18) is used in combination with the front end support (20) and the L-shaped support (22).

9. The independently adjustable double-layer piano with keys and a thumb according to claim 1, wherein when the inverted-T-shaped pillar (18) is used in combination with the integrated support member (16), the integrated support member (16) penetrates through the limiting hole (19) of the bottom plate (3) from bottom to top, and the inverted-T-shaped pillar (18) penetrates through the integrated support member (16) and the positioning hole (6) of the bottom plate (3) from bottom to top in sequence for installation.