CN201465531U

CN201465531U - Dip-angle tuning peg board

Info

Publication number: CN201465531U
Application number: CN2009201004860U
Authority: CN
Inventors: 周伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-07-28
Filing date: 2009-07-28
Publication date: 2010-05-12
Anticipated expiration: 2019-07-28

Abstract

The utility model aims to provide a dip-angle tuning peg board which has relatively simple manufacturing process and reduces the relative tension through the structural change. A surface board of the tuning peg board is not parallel to strings and a sound board, a tuning peg is still arranged vertical to the surface board of the tuning peg board, the tuning peg has a dip angle with the horizontal plane along with the dip angle of the tuning peg board, and the resistance is obviously increased owing to the interaction between the strings and an upper fulcrum of a gagger nut, therefore the tension to the tuning peg and the acting force on a tuning peg hole from the strings are greatly reduced, and the service life and the pitch stability of the tuning peg board are further increased.

Description

The inclination angle type string shaft

(1) technical field

The utility model relates to a kind of instrument structure, is specifically related to the string shaft of a kind of keyboard instrument or stringed musical instrument.

(2) background technology

Make the serviceable life of musical instrument and accuracy in pitch is more stable, be the long-term target of musical instrument deviser lastingly.Because the pulling force effect of string, be easy to generate looseningly between peg and the string shaft, this is to cause musical instrument short serviceable life, one of unsettled reason of accuracy in pitch, the deviser makes every effort to a material of making string shaft is got solid, so that peg is produced bigger grip.As the patent No. is 200720093849.3 piano string axillare, by the dash board of multi-layered thickness, central layer, long in plate, backboard forms string shaft, it is stable, indeformable to increase, the characteristic of warpage not, increases peg torsion, makes the piano original tone color of maintenance for a long time.Yet the material of string shaft is limited to the solidity role that keeps string shaft, and the increase of complicated technology can cause the increase of cost, repeatedly uses colloid bonding sheet material, also causes the pollution to environment easily.

The face that string shaft is inlaid with peg all the time with string, soundboard and backboard keeping parallelism, string is to conduct faithfully by peg to the pulling force of string shaft always.

(3) summary of the invention

The purpose of this utility model is to provide the inclination angle type string shaft that a kind of manufacture craft is simple relatively, alleviate relative pulling force by structural change.

The purpose of this utility model is achieved in that the inclination angle type string shaft is made up of pedestal and plate body two parts, pedestal is the right angle trigonometry cylinder, pedestal inclined-plane and bottom surface angulation are less than 90 degree, plate body is by dash board, a backboard and a core assembly plate are formed, dash board, central layer and backboard are successively by the mutual bonding formation plate body of colloid, the free surface of backboard is bonding mutually in the inclined-plane of pedestal, dash board, central layer and backboard are the four prism type plate, each other the bonding plane size is big or small consistent with the pedestal inclined-plane, and bonding plane and minimum angles that the bottom surface becomes and pedestal inclined-plane and bottom surface angulation are consistent.

The utility model also has some technical characterictics like this:

1, a described core assembly plate comprises at least one central layer.

The utility model is a kind of string shaft dash board plate face and string, the uneven structure of soundboard, peg still is provided with vertical string shaft dash board plate face direction, keeping parallelism between peg and the peg, peg is along with the inclination angle and the surface level of string shaft produce the inclination angle like this, add string and gagger capotasto last fulcrum interaction and increased mutual resistance significantly, thereby reduced string widely to the pulling force of peg with to the acting force in peg hole, make the part of the force of musical instrument most critical, also be decision piano serviceable life key part--the length of service of string shaft prolongs greatly, the stability of accuracy in pitch is also had sizable improvement.

Inclination angle about string shaft can be determined according to the tortuosity factor of string, the sharp keen degree and the angle of gagger capotasto.Obviously along with the variation at inclination angle, resistance also increases thereupon, and the pulling force that conducts to peg with respect to string reduces greatly, and very big variation also can take place the acting force of peg and string shaft, thereby appropriate regulation angle and consider correlative factor in process of production.If it is rational in infrastructure then can add some and can make its more perfect replenishing.

(4) description of drawings

Fig. 1 is an embodiment side structure synoptic diagram;

Fig. 2 is an embodiment string shaft structure for amplifying synoptic diagram;

Fig. 3 is an embodiment pedestal structure for amplifying synoptic diagram.

(5) embodiment

Below in conjunction with drawings and Examples the utility model is described further:

Embodiment

In conjunction with Fig. 1, Fig. 2 and Fig. 3, present embodiment is by piano back of the body frame 1, soundboard 2, string shaft 3, gagger capotasto 4, peg 5 and string 6 are formed, string shaft 3 is by pedestal 7, backboard 8, six layers of central layer 9 and dash board 10 are formed, the inclined-plane 11 of pedestal 7 is 75 degree with angle 13 that bottom surface 12 becomes, the inclined-plane 11 of pedestal 7 is mutually bonding with backboard 8, backboard 8 is bonding with central layer 9, central layer 9 is mutually bonding with dash board 10, the bottom surface 12 of pedestal 7 is mutually bonding with soundboard 2, the back side of pedestal 7 and soundboard 2 and piano back of the body frame 1 are bonding, and gagger capotasto 4 is arranged on soundboard 2 bottoms, and peg 5 embeds in the string shaft 3 by dash board 10, string 6 one ends are connected with peg 5, and another strides across gagger capotasto 4 and is connected on the soundboard.

Claims

1. the inclination angle type string shaft is made up of pedestal and plate body two parts, it is characterized in that pedestal is the right angle trigonometry cylinder, pedestal inclined-plane and bottom surface angulation are less than 90 degree, plate body is made up of dash board, backboard and a core assembly plate, dash board, central layer and backboard are successively by the mutual bonding formation plate body of colloid, the free surface of backboard is bonding mutually in the inclined-plane of pedestal, dash board, central layer and backboard are the four prism type plate, each other the bonding plane size is big or small consistent with the pedestal inclined-plane, and bonding plane and minimum angles that the bottom surface becomes and pedestal inclined-plane and bottom surface angulation are consistent.

2. inclination angle type string shaft according to claim 1 is characterized in that a described core assembly plate comprises at least one central layer.