CN211699673U

CN211699673U - Piano sound board structure

Info

Publication number: CN211699673U
Application number: CN202020244470.3U
Authority: CN
Inventors: 王锡玉; 邴艳丽; 刘英杰; 黄奎勇
Original assignee: Yantai Perzina Piano Manufacturing Co ltd
Current assignee: Yantai Perzina Piano Manufacturing Co ltd
Priority date: 2020-03-03
Filing date: 2020-03-03
Publication date: 2020-10-16
Anticipated expiration: 2030-03-03

Abstract

The utility model relates to a piano sound board structure, which comprises a sound board, a rib wood, a sound board frame and a back frame, wherein a bass mute angle of the sound board is separated from a sound board main body to form a sound board split body; the split part of the sound board and the sound board main body is arc-shaped; the thickness of the lower part of the soundboard main body is gradually increased from low pitch to high pitch; the sound board frame comprises a main sound board frame and a split sound board frame; the left side edge, the right side edge, the top edge and the arc-shaped edge A of the sound board main body are respectively bonded on the left frame, the right frame, the upper frame and the arc-shaped frame A of the main sound board frame; the straight edge and the arc-shaped edge B of the sound board split body are respectively bonded on the straight frame and the arc-shaped frame B of the split sound board frame; the arc-shaped frame B is bonded with the arc-shaped frame A; the rib wood is bonded on one side of the sound board main body; the ribs comprise transverse ribs and a plurality of oblique ribs; the oblique rib wood is obliquely and parallelly arranged; the transverse rib wood is bonded below the soundboard main body; the soundboard is bonded on the back frame through the soundboard frame. The syllable of the application is transitional and natural, and the tone color is mellow; the audio amplitude increases and the duration of the tone increases.

Description

Piano sound board structure

Technical Field

The utility model relates to a piano sound board structure belongs to the piano technology field.

Background

The sound board is also called a sound board and is one of the main components of a piano, and the tone of the piano played by people comes from the sound board. The sound that the piano played is transmitted the bridge through string vibrations, and the bridge passes to the soundboard again, and the soundboard is with sound amplification. The upper left corner of the bass part of the soundboard of the upright piano is a mute corner, which does not participate in resonance sound production, the mute corner of the existing soundboard is a right-angle, straight-edge or bevel-edge structure, the tone color produced by the soundboard is more vivid and hard due to the structure, the transition between syllables is not smooth, the tone color is not mellow, the lingering sound is short, and the like, so that the sound of the piano is influenced, and the bad auditory perception is brought to audiences.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to current piano soundboard tone quality is crude, the syllable transition is unsmooth, the short scheduling problem of lingering sound, provide a piano soundboard structure.

The utility model provides an above-mentioned technical problem's technical scheme as follows: a piano sound board structure comprises a sound board, a rib wood, a sound board frame and a back frame, wherein a bass mute angle of the sound board is disconnected from a sound board main body, and the disconnected mute angle is a sound board split body; the split part of the sound board and the sound board main body is arc-shaped; the thickness of the lower part of the soundboard main body is gradually increased from low pitch to high pitch; the sound board frame comprises a main sound board frame and a split sound board frame; the main sound board frame consists of a left frame, a right frame, an upper frame and an arc-shaped frame A, and the left side edge, the right side edge, the top edge and the arc-shaped edge A of the sound board main body are respectively bonded on the left frame, the right frame, the upper frame and the arc-shaped frame A of the main sound board frame; the split sound board frame consists of two straight frames and an arc-shaped frame B, and the straight edges and the arc-shaped edges B of the sound board split bodies are respectively bonded on the straight frames and the arc-shaped frames B of the split sound board frame; the arc-shaped frame B of the split sound board frame is bonded with the arc-shaped frame A of the main sound board frame; the rib wood is bonded on one side of the soundboard main body; the ribs comprise transverse ribs and a plurality of oblique ribs; a plurality of oblique rib woods are obliquely and parallelly arranged; the transverse rib wood is bonded below the soundboard main body and arranged above the bottom edge of the soundboard main body; the soundboard is bonded on the back frame through the soundboard frame.

The principle of the utility model is as follows: the mute angle of the soundboard is broken in an arc shape to form a soundboard main body and a soundboard split body; the lower part of the sound board main body is gradually thickened from bass to treble, and structures with different thicknesses correspond to the arc-shaped edges to form a relative circumferential cycle, so that the transition between each syllable is natural and mellow; the bass is more stable, thick and full, the delay is longer, the mediant is vast and wide, and the treble is more clear, bright and transparent.

On the basis of the technical scheme, the utility model discloses a reach the convenience of use and the stability of equipment, can also make following improvement to foretell technical scheme:

furthermore, the arc-shaped edge A of the soundboard main body is not in contact with the arc-shaped edge B of the soundboard split body.

The beneficial effects of the further scheme are as follows: form unsettled clearance between soundboard main part and the soundboard components of a whole that can function independently, tone quality that the soundboard produced when vibrations is more mellow, full, with the not uniform thickness structure of soundboard main part, the tone quality is unified, the transition is smooth and easy nature.

Further, the soundboard main body is an arc-shaped plate, one side of the soundboard main body, which is not bonded with the rib wood, protrudes outwards, and the radian of the soundboard main body is gradually reduced from the middle to the corners.

The beneficial effects of the further scheme are as follows: the arc soundboard is beneficial to the natural syllable transition and the tone color is more mellow.

Further, one side of the transverse rib wood, which is bonded with the sound board main body, is an arc-shaped surface A, and the arc-shaped surface A is matched with the radian of the sound board main body. One side of the inclined rib wood, which is bonded with the soundboard main body, is an arc-shaped surface B, and the arc-shaped surface B is matched with the radian of the soundboard main body.

The beneficial effects of the further scheme are as follows: the bonding surface of the rib is arc-shaped, so that the rib is not easily affected by pressure, time, weather and the like, the shape change of the rib is reduced, and the tone accuracy stability of the soundboard is ensured.

Furthermore, a gap is reserved between the rib wood and the back frame. The transverse rib wood is bonded above the bottom edge of the soundboard main body and is not in contact with the bottom edge.

The beneficial effects of the further scheme are as follows: leave the space between stall bar and the back of the body frame, simultaneously, the lower part of sound board frame does not establish the frame, and the cross stall bar bonds in the base top of soundboard main part, and middle part and lower part between soundboard and the back of the body frame form open unsettled structure, and the audio frequency amplitude that produces when making the soundboard vibrations increases, and the effect of delaying is obvious, the volume is big and not fidget, muddy and undistorted.

The utility model has the advantages that: the bass mute angle of the sound board is broken in an arc shape, and forms a circumferential cycle with a structure with different thickness at the lower part of the sound board, so that syllable transition is natural and smooth, and the tone color is mellow; the lower part and the middle part between the soundboard and the back frame form a suspended structure, so that the audio amplitude generated by the soundboard vibration is increased, and the soundboard is long in sound and full.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

fig. 3 is a bottom view of the present invention;

FIG. 4 is a schematic structural view of the soundboard;

FIG. 5 is a cross-sectional view B-B of FIG. 4;

fig. 6 is a schematic structural view of a sound board frame;

FIG. 7 is a schematic view of the construction of the sound panel frame and rib;

fig. 8 is a schematic structural view of the back frame.

The reference numbers are recorded as follows: 1-sound board, 1.1-sound board main body, 1.2-sound board split, 1.3-unequal thickness structure, 2-rib wood, 2.1-horizontal rib wood, 2.2-oblique rib wood, 3-sound board frame, 3.1-main sound board frame and 3.2-split sound board frame; 4-carrying the frame.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 1-8, a piano soundboard structure comprises a soundboard 1, a rib 2, a soundboard frame 3 and a back frame 4, wherein a bass mute angle of the soundboard 1 is disconnected from a soundboard main body 1.1, and the disconnected mute angle is a soundboard split body 1.2; the split part of the soundboard split body 1.2 and the soundboard main body 1.1 is arc-shaped; the thickness of the lower part of the soundboard main body 1.1 is gradually thickened from bass to treble to form a structure 1.3 with different thicknesses; the sound board frame 3 comprises a main sound board frame 3.1 and a split sound board frame 3.2; the main sound board frame 3.1 consists of a left frame, a right frame, an upper frame and an arc-shaped frame A, wherein two ends of the arc-shaped frame A are respectively fixedly connected with the upper end of the left frame and one end of the upper frame, and the other end of the upper frame is fixedly connected with the upper end of the right frame; the left side edge, the right side edge, the top edge and the arc-shaped edge A of the soundboard main body 1.1 are respectively bonded on the left frame, the right frame, the upper frame and the arc-shaped frame A of the main soundboard frame 3.1; the split sound board frame 3.2 consists of two straight frames and an arc-shaped frame B, and the straight edges and the arc-shaped edges B of the sound board split bodies 1.2 are respectively bonded on the straight frames and the arc-shaped frames B of the split sound board frame 3.2; the arc-shaped frame B of the split sound board frame 3.2 is bonded with the arc-shaped frame A of the main sound board frame 3.1; the arc-shaped edge A of the soundboard main body 1.1 is not contacted with the arc-shaped edge B of the soundboard split body 1.2, so that an arc-shaped gap is formed; the arc gap structure corresponds to the structure 1.3 with different thickness of the main body of the soundboard to form relative circumferential circulation, which is favorable for natural and smooth syllable transition.

The rib 2 is bonded on one side of the soundboard main body 1.1 bonded with the soundboard frame 3; the rib 2 comprises a transverse rib 2.1 and a plurality of inclined ribs 2.2; a plurality of oblique rib woods 2.2 are obliquely and parallelly arranged and are uniformly adhered to the sound board main body 1.1; the transverse rib wood 2.1 is bonded below the sound board main body 1.1; soundboard main part 1.1 is the arc, and soundboard main part 1.1 does not bond one side of stall bar 2 and outwards bulges, and the radian of soundboard main part 1.1 reduces from the middle part to the corner gradually. One side of the transverse rib wood 2.1, which is bonded with the sound board main body 1.1, is an arc-shaped surface A, and the arc-shaped surface A is matched with the radian of the sound board main body 1.1; one side that rib 2.2 and soundboard main part 1.1 bonded is arcwall face B, arcwall face B and soundboard main part 1.1's radian looks adaptation, through pressure with horizontal rib 2.1 and rib 2.2's arcwall face bond to soundboard main part 1.1 on, the face that bonds is favorable to reducing time for the arcwall face, factor such as weather is to the influence of rib, it takes place to deform, damage such as fracture to reduce the rib, improve the sound accuracy stability of soundboard, the life of extension soundboard.

The soundboard 1 is bonded on the back frame 4 through a soundboard frame 3; gaps are reserved between the transverse rib 2.1 and the inclined rib 2.2 and the back frame 4, and the middle part of the soundboard 1 and the back frame 4 are suspended; the horizontal rib wood 2.1 is bonded above the bottom edge of the soundboard main body 1.1 and is not contacted with the bottom edge, the lower part of the soundboard 1 and the back frame 4 are suspended, and the suspended structure formed by the middle part and the lower part between the soundboard 1 and the back frame 4 increases the audio amplitude generated when the soundboard vibrates, and has obvious sound-delaying effect, large volume without noise, thickness and distortion.

The utility model discloses in upper and lower, left and right mean the utility model discloses position when the angle that the drawing was located, only for more convenient description the utility model discloses a structure need not be used for the limit to decide the utility model discloses a position.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A piano soundboard structure comprises a soundboard (1), a rib wood (2), a soundboard frame (3) and a back frame (4), and is characterized in that a bass mute angle of the soundboard (1) is disconnected with a soundboard main body (1.1), and the disconnected mute angle is a soundboard split body (1.2); the split position of the soundboard split body (1.2) and the soundboard main body (1.1) is arc-shaped; the thickness of the lower part of the sound board main body (1.1) is gradually increased from low pitch to high pitch; the sound plate frame (3) comprises a main sound plate frame (3.1) and a split sound plate frame (3.2); the main sound board frame (3.1) consists of a left frame, a right frame, an upper frame and an arc-shaped frame A, and the left side edge, the right side edge, the top edge and the arc-shaped edge A of the main sound board frame (1.1) are respectively bonded on the left frame, the right frame, the upper frame and the arc-shaped frame A of the main sound board frame (3.1); the split sound board frame (3.2) consists of two straight frames and an arc-shaped frame B, and the straight edges and the arc-shaped edges B of the sound board split bodies (1.2) are respectively bonded on the straight frames and the arc-shaped frames B of the split sound board frame (3.2); the arc-shaped frame B of the split sound board frame (3.2) is bonded with the arc-shaped frame A of the main sound board frame (3.1); the rib wood (2) is bonded on one side of the soundboard main body (1.1); the rib wood (2) comprises a transverse rib wood (2.1) and a plurality of oblique rib wood (2.2); a plurality of the inclined rib timbers (2.2) are arranged in parallel; the transverse rib wood (2.1) is bonded below the soundboard main body (1.1); the soundboard (1) is bonded on the back frame (4) through the soundboard frame (3).

2. A piano soundboard structure according to claim 1, characterised in that the curved side a of the soundboard main body (1.1) is free from contact with the curved side B of the soundboard sub-body (1.2).

3. A piano soundboard structure according to claim 2, characterised in that the soundboard body (1.1) is an arcuate plate, the side of the soundboard body (1.1) not bonded to the ribs (2) projecting outwardly, the curvature of the soundboard body (1.1) decreasing from the centre to the corners.

4. A piano soundboard structure according to claim 3, characterised in that the side of the cross-rib (2.1) to which the soundboard body (1.1) is bonded is a cambered surface a, which is adapted to the curvature of the soundboard body (1.1).

5. A piano soundboard structure according to claim 3, characterised in that the side of the brace (2.2) to which the soundboard body (1.1) is bonded is a curved surface B, which is adapted to the curvature of the soundboard body (1.1).

6. A piano soundboard structure according to claim 4 or 5, characterised in that a gap is left between the rib (2) and the back frame (4).

7. A piano soundboard structure according to claim 6, characterised in that said cross-ribs (2.1) are glued above the bottom edge of said soundboard body (1.1) without touching said bottom edge.