CN2412271Y

CN2412271Y - Piano key hand feeling regulator

Info

Publication number: CN2412271Y
Application number: CN 00216638
Authority: CN
Inventors: 徐志君
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-02-29
Filing date: 2000-02-29
Publication date: 2000-12-27
Anticipated expiration: 2010-02-28

Abstract

The utility model discloses a piano key hand feeling regulator, particularly a regulator for piano keys of an upright piano. The utility model is composed of a shaft, a bracket, spring pieces, regulating screws and a cushion block, wherein, the shaft via a bearing seat is connected with side plates of the piano; the bracket is fixed on the shaft; both ends of the spring pieces are respectively fixed on the bracket and pressed on the piano keys; the regulating screws are screwed on the bracket; one end of the regulating screws is provided with the cushion block and is pressed on the spring pieces; the light and heavy hand feeling of keystrokes can be regulated through rotating the adjusting screws. The utility model has the advantages that the light and heavy degree of hand feeling for each piano key can be conveniently, accurately and quickly regulated to the desired position; the sound quality can be enhanced; the piano key hand feeling regulator has the hand feeling of playing a horizontal piano.

Description

A kind of piano key feel regulating device

The utility model relates to a kind of piano key feel regulating device, particularly upright piano key feel regulating device.

Piano is in playing, because the fulcrum of each movable part is subjected to the influence of factors such as the wearing and tearing, fatigue of temperature, humidity and material, the damping that causes each moving fulcrum changes, thereby cause the weight of keystroke feel to change, if will keep good keystroke feel, then must often do necessary adjustment to piano.In addition, the piano playing person also respectively has required to the weight of keystroke feel, and it is slightly light that general child and beginner like, and certain playing ability or professional player is arranged for exercise finger strength, then needs heavy.This exchanges the lawyer and has proposed how to make things convenient for, rapidly, regulates the weight problem of keystroke feel exactly, but because the piano structure of upright piano particularly itself, seldom possesses the function of regulated at will keystroke feel weight again.For this reason, the someone proposes to increase by a fastening at the other end at each key keystroke place, produces a counter torque when making keystroke, and the size of this counter torque depends on the weight of fastening.Also there is the structure of pair fastening to improve, proposed a kind of piano fastening of compound substance as Chinese patent 91231053.7.Though these methods can have the following disadvantages according to the weight of the weight size adjustment keystroke feel of fastening: one owing to rely on the weight of fastening to regulate the weight of keystroke feel, so bother very much when each key regulated; Two is the damping change difference that satisfies needs and each moving fulcrum of different feel weights, fastening must be made all size by weight, then cost is higher: the administration of fixed of must punching on each key during three installation fastenings, mounting or dismounting inconvenience, and the back of packing into is because the drying of weather is easily loosening.

The purpose of this utility model provide a kind of have easy to adjust, rapid, accurate, and cost piano key feel regulating device low, simple in structure.

For achieving the above object, the utility model is by support, axle and count the spring leaf of equal number with key, set screw and cushion block are formed, axle is connected on the side plate of both sides, piano key top by supporting base, support is fixed on the axle, one end of every flat spring sheet is separately fixed on the support lower surface, the other end is pressed in the other end at each key keystroke place respectively, each set screw is passed the lower surface respectively and is pressed on every flat spring sheet from the upper surface of support, each set screw all is connected by screw thread with support, the rotation set screw can be adjusted the snap-in force of spring leaf to key, and every cushion block is separately fixed on the contact jaw of set screw to spring leaf.

The end of above-mentioned spring pressure on key is bending.

Above-mentioned piano key feel regulating device, also comprise the pretightning force governor motion of forming by connecting rod, bearing, bolt, nut and carriage, bearing is connected on axle and the bearing seat, connecting rod one end is connected on the support, and other end coupling bolt, nut are positioned at carriage and are connected on the bolt, carriage is connected on the base plate under the piano key, the turn nut can make bolt move up and down, thereby drivening rod is swung support, with the pre-pressing force of regulating spring sheet to key.

The other end of the utility model at each key keystroke place increased by one group of spring leaf, set screw and cushion block, produce a counter torque when making keystroke, the big I of counter torque is regulated by set screw, solve the deficiency that mode produced of original adjusting fastening weight, realized convenience, rapidly, the weight with each key feel is adjusted to the desired position exactly; And because of the effect of elastic force, also can improve tonequality and the player is felt has a kind of feel of playing horizontal piano.In addition, advantage simple in structure, that cost is low that the utility model also has is on the upright piano applicable to various models.

Provide embodiment of the present utility model and accompanying drawing below, and be described further:

Fig. 1 (a) and (b) are front view of the present utility model and left view;

Fig. 2 (a) and (b) are the synoptic diagram of pre-pressing force governor motion in the utility model.

Press shown in Fig. 1 (a) and (b), axle 1 is fixed on the supporting base 8, and supporting base 8 is fixed on both sides, the piano key 6 top side plate 10.Support 7 is fixed on the axle 1, every flat spring sheet 2 one ends are fixed on the lower surface of support 7, the other end is bending and is pressed in the other end at key 6 keystroke places, each set screw 5 is passed the lower surface and is pressed on the spring leaf 2 from the upper surface of support 7, be connected by screw thread between each set screw 5 and the support 7, rotation set screw 5 can be adjusted the snap-in force of 2 pairs of opposite position keys 6 of spring leaf, the feel weight when regulating each key 6 keystroke with realization.Be stained with felt 3 on the every cushion block 4, every cushion block 4 is separately fixed on the contact jaw of 5 pairs of spring leafs 2 of set screw.The quantity of spring leaf 2, set screw 5 and cushion block 4 is identical with the quantity of key 6.

Press shown in Fig. 2 (a) and (b), between axle 1 and the bearing seat 8 bearing 9 is housed, connecting rod 14 1 ends are connected on the support 7, other end coupling bolt 15.Nut 16 is positioned at carriage 17, and is connected on the bolt 15, and carriage 17 is connected on the base plate 18 under the key 6.Rotation nut 16 can make bolt 15 move up and down, thereby drivening rod 14 is swung support 7, to adjust the pre-pressing force of 2 pairs of keys 6 of spring leaf.When playing, player finger hits the keystroke place 11 at key 6, and key 6 swing around supporting-point 13, and drives hammered string instrument 12 and hit string, and 2 pairs of keys of while spring leaf, 6 generations, one counter torque acts on player's finger.By rotation set screw 5, the size of scalable counter torque is promptly regulated the weight of keystroke feel.

Claims

1. piano key feel regulating device, it is characterized in that: by support 7, axle 1 and count the spring leaf 2 of equal number with key, set screw 5 and cushion block 4 are formed, axle 1 is fixed in the supporting base 8, supporting base 8 is fixed on both sides, the key 6 top side plate 10, support 7 is fixed on the axle 1, one end of every flat spring sheet 2 is separately fixed on support 7 lower surfaces, the other end is pressed in the other end at each key keystroke place 11 respectively, each set screw 5 is passed the lower surface respectively and is pressed on the spring leaf 2 from the upper surface of support 7, each set screw 5 all is connected by screw thread with support 7, and every cushion block 4 is separately fixed on the contact jaw of 5 pairs of spring leafs 2 of set screw.

2. according to the described a kind of piano key feel regulating device of claim 1, it is characterized in that: the end that above-mentioned spring leaf 2 is pressed on the key 6 is bending, is stained with felt 3 on the above-mentioned cushion block 4.

3. according to claim 1,2 described a kind of piano key feel regulating devices, it is characterized in that: also comprise the pretightning force governor motion of forming by connecting rod 14, bearing 9, bolt 15, nut 16 and carriage 17, bearing 9 is installed on axle 1 and the bearing seat 8, connecting rod 14 1 ends connect support 7, other end coupling bolt 15, nut 16 is positioned at carriage 17, and is connected on the bolt 15, and carriage 17 is connected on the base plate 18 under the key 6.