CN2574164Y

CN2574164Y - Piano sound board

Info

Publication number: CN2574164Y
Application number: CN 02279769
Authority: CN
Inventors: 王立志
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-10-28
Filing date: 2002-10-28
Publication date: 2003-09-17
Anticipated expiration: 2012-10-28

Abstract

The utility model discloses a piano sound board, which is mainly composed of an upper, a middle and a lower layers of wooden boards in a gluing mode. The upper and the lower wooden boards are sheet veneering, and the middle layer of wooden board is paulownia jointed boards, wherein, the upper and the lower layers of sheet veneering are the rift sawing sheet veneering of white pine and yubin, and the thickness is from 0.7 mm to 0.9 mm. the rift sawing paulownia jointed boards are integrally connected into the middle layer of paulownia jointed boards in a clip connection of upper and lower hooks mode, and the thickness is from 6 mm to 9 mm. the sound board has reasonable structure and high integral strength. The paulownia jointed board adopts adopt the upper and the lower hooks to be connected, so the complete structure of the paulownia boards selves is basically maintained, and the sounding effect of the sound board is enhanced. The rift sawing paulownia boards adopt transverse or longitudinal splicing modes, so the utilization rate of the leftover bits and pieces of the paulownia boards is enhanced, and the waste of the paulownia timber resource is reduced.

Description

The piano pronunciation board

(1) technical field: the utility model relates to a kind of musical instrument pronunciation board, relates in particular to a kind of piano pronunciation board.

(2) background technology: the piano pronunciation board requires very strict to the material of timber, and traditional piano pronunciation board is with red, kahikatea and the refined making of cloud.Because the natural and man-made calamities a variety of causes causes the destruction to forest, and ecologic environment is unbalance, to this, strong forest conservation measure has all been taked in the whole world in recent years.Red, kahikatea and the refined felling of cloud also have strict restriction, thereby, the development and use paulownia timber is made the piano pronunciation board has become trend, " piano pronunciation board " patent No. that the inventor declared in 99 years is that 99237157.X adopts the composite plate of paulownia timber as the primary structure layer of piano pronunciation board, this paulownia timber is owing to the reason of technical finesse, the splicing seams of paulownia timber ftractures easily, cementing layer is too much, make the pronunciation resonance effect of paulownia timber can not well be sent out Yun, the pronunciation board life-span of making simultaneously, is shorter.

(3) summary of the invention: the pronunciation board quality that causes for the connecting method that solves kahikatea veneer and paulownia timber is unreasonable reduces problem, and the utility model provides a kind of piano pronunciation board that changes thin slice veneer angle and paulownia timber connecting method, improves the pronunciation board performance.

The technical solution of the utility model realizes in the following manner:

A kind of piano pronunciation board, it is mainly formed by upper, middle and lower-ranking wood based panel gummed, two-layer up and down is the thin slice veneer, the middle layer is a paulownia jointed board, wherein two-layer veneer is kahikatea, the refined footpath of cloud shave veneer up and down, and thickness is 0.7-0.9mm, and the middle layer paulownia jointed board is pieced together knot for the quarter sawing paulownia jointed board, piecing together the knot mode is that last lower draw-bar snapping is an one, and thickness is 6-9mm.

Paulownia timber is longitudinal spliced or horizontally-spliced, and when longitudinal spliced, two-layer up and down veneer edger-grain and jigsaw transverse edge angle are α=35 °-36 °.

When paulownia timber was horizontally-spliced, two-layer up and down veneer edger-grain and jigsaw transverse edge angle were β=45 °-46 °.

Good effect of the present utility model is:

1, rational in infrastructure, bulk strength height, paulownia jointed board adopt to be gone up lower draw-bar and are buckled connection, have kept the complete structure of paulownia timber self substantially, guarantee that paulownia timber in pronunciation, resonance, advantage aspect transaudient, improves the voice effect of pronunciation board.

2, the quarter sawing paulownia timber adopts horizontal or longitudinal spliced mode to improve the utilization factor of paulownia timber leftover pieces greatly, has reduced the waste of paulownia wood timber resources.

3, two kahikateas, the refined veneer edger-grain of cloud and paulownia jointed board shape have a certain degree up and down, have more guaranteed the integraty of whole pronunciation board, have guaranteed the serviceable life of whole pronunciation board.

(4) description of drawings:

Fig. 1 is horizontally-spliced structural representation for paulownia jointed board in the utility model.

Fig. 2 is longitudinal spliced structural representation for paulownia jointed board in the utility model.

Fig. 3 is the version of the upper and lower hook of two adjacent paulownia timbers.

(5) embodiment:

The utility model is described in further detail below in conjunction with accompanying drawing:

By Fig. 1-Fig. 3 as can be seen, the utility model is mainly formed by upper, middle and lower-ranking wood based panel gummed, two-layer up and down is thin slice veneer (1,4), the middle layer is paulownia jointed board (2), wherein two-layer veneer is kahikatea, the refined footpath of cloud shave veneer up and down, and thickness is 0.9mm, and middle layer paulownia jointed board 2 is pieced together knot for the quarter sawing paulownia jointed board, piecing together the knot mode is that last lower draw-bar 3 snappings are one, and thickness is 6mm.Be it can also be seen that by Fig. 1 the quarter sawing paulownia jointed board is horizontally-spliced, splicing seams 5 is laterally, and two-layer up and down veneer edger-grain and jigsaw transverse edge angle are α=45 °.Be it can also be seen that by Fig. 2 two-layer up and down veneer thickness is 0.7mm, the quarter sawing paulownia jointed board is longitudinal spliced, and splicing seams 5 is vertically, and two-layer up and down veneer edger-grain and jigsaw transverse edge angle are β=35 °, pieces together that to tie plate thickness be 9mm.Can find out also that by Fig. 3 it is an integral slab that two adjacent quarter sawing paulownia timbers hook 3 is respectively that upper and lower hook interlocks.

Claims

1, a kind of piano pronunciation board, it is mainly formed by upper, middle and lower-ranking wood based panel gummed, two-layer up and down is thin slice veneer (1,4), the middle layer is paulownia jointed board (2), it is characterized in that two-layer veneer is kahikatea, the refined footpath of cloud shave veneer up and down, thickness is 0.7-0.9mm, and middle layer paulownia jointed board (2) is pieced together knot for the quarter sawing paulownia jointed board, piecing together the knot mode is that last lower draw-bar (3) snapping is an one, and thickness is 6-9mm.

2, piano pronunciation board according to claim 1 is characterized in that paulownia timber is longitudinal spliced or horizontally-spliced, and when longitudinal spliced, two-layer up and down veneer edger-grain and jigsaw transverse edge angle are β=35 °-36 °.

3, piano pronunciation board according to claim 1, when it is characterized in that paulownia timber is horizontally-spliced, two-layer up and down veneer edger-grain and jigsaw transverse edge angle are α=45 °-46 °.