Yamaha G10C Instrukcja Użytkownika Pobierz pdf (Strona 7)

EP 0 585 798 B1

Moreover,

the

key

action mechanism 2 is

easily

reg-

ulated,

especially,

in the

adjusting

the

regulating

button

2m,

because the

repetition

lever

pushed

over

the back check felt

through

the rotation of the

jack

due

the

escape

without

any

contact

with the back

check

for

allowing

the hammer

assembly

slightly

move

in the clockwise direction.

Therefore,

the

tuner

can

discriminate the

timing

when the hammer

assembly

being approached

the

string

the

jack slightly

returns

due

the

gap

G after

escape

of the

jack

2d,

and

the

tuner

can adjust

the distance between the hammer

head 3b and the

string

4 to

the

predetermined

value

that

timing.

Second Embodiment

Turning

Fig.

of the

drawings, a key

action mech-

anism

accompanied

with

a repetition

mechanism

12,

and the

key

action mechanism

and the

repetition

mechanism 12 form

parts

an upright piano embodying

the

present

invention.

Though

not

shown in

Fig.

associated

key

staying

in the

rest

position,

and the

key

action mechanism

and the

repetition

mechanism

12 remain in

respective

initial

positions.

However,

the

upright piano implementing

the second embodiment is

only

different in the

structure

of the

repetition

mecha-

nism 12 from the first

embodiment,

and the other

com-

ponents

are

labeled with the

same

references

designat-

ing

the

corresponding

components

of the first embodi-

ment

without detailed

description.

In the

repetition

mechanism

12,

the rod member

2w,

the block member 2x and the

regulating screw 2y are

replaced

with

deformable rod member 12a.

However,

the other

component parts

are

similar

those of the first

embodiment,

and

are

labeled with the

same

references

without

any

detailed

description.

The deformable rod member 12a is bent

in-

termediate

portion,

and the

leading

end

portion

12b is

directed

angle

A with

respect

the boss

portion

2c.

a regulating, a

tuner

changes

the

angle

and the

initial

position

of the

repetition

lever

regulable.

The

upright piano implementing

the second embod-

iment achieves all the

advantages

of the first embodi-

ment.

Third Embodiment

Turning

Fig.

8 of the

drawings, a key

action mech-

anism 21 is

accompanied

with

a repetition

mechanism

22,

and the

key

action mechanism 21 and the

repetition

mechanism 22 form

parts

an upright piano embodying

the

present

invention.

Though

not

shown in

Fig.

associated

key

staying

in the

rest

position,

and the

key

action mechanism 21 and the

repetition

mechanism

22 remain in

respective

initial

positions.

However,

the

upright piano-implementing

the third embodiment is

on-

different in the

structure

of the

repetition

mechanism

22 from the first

embodiment,

and the other

components

are

labeled with the

same

references

designating

the

corresponding

components

of the first embodiment

without detailed

description.

In the

repetition

mechanism

22,

the rod member

2w,

the block member 2x and the

regulating screw 2y are

replaced

with

deformable rod member

22a,

and the

deformable rod member 22a is similar

the deformable

rod member 12a of the second embodiment.

Moreover,

the

repetition

lever

replaced

with

a repetition

lever

22b,

and

a regulating screw

22c is

engaged

with the

right

end

portion

of the

repetition

lever 22b instead of

the

semi-spherical portion.

However,

the other

compo-

nent

parts

are

similar

those of the first

embodiment,

and

are

labeled with the

same

references without

any

detailed

description.

a regulating,

the

regulating screw

22c is screwed

into

out

of the

right

end

portion,

and,

after the

escape

jack

2d,

the

gap

between the head of the

screw

22c

and the back check felt is

regulated

an appropriate

value without

any

deformation of the rod 22a.

The

upright piano implementing

the third embodi-

ment

achieves all the

advantages

of the first embodi-

ment.

Turning

Fig.

9 of the

drawings, a key

action mech-

anism 31 is

accompanied

with

a repetition

mechanism

32,

and the

key

action mechanism 31 and the

repetition

mechanism 32 form

parts

an upright piano embodying

the

present

invention.

Though

not

shown in

Fig.

associated

key

staying

in the

rest

position,

and the

key

action mechanism 31 and the

repetition

mechanism

32 remain in

respective

initial

positions.

The

upright pi-

ano implementing

the fourth embodiment is

only

differ-

ent

in the

structure

of the

repetition

mechanism 32 from

the first

embodiment,

and the other

components

are

la-

beled with the

same

references

designating

the

corre-

sponding

components

of the first embodiment without

detailed

description.

In the

repetition

mechanism

32,

the

repetition

lever

replaced

with

a repetition

lever

32a,

and semi-

spherical portions

32b and 32c

are

formed in both end

portions

of the

repetition

lever 32a.

However,

the other

component parts

are

similar

those of the first embod-

iment,

and

are

labeled with the

same

references without

any

detailed

description.

The

semi-spherical portion

32b makes

sliding mo-

tion

the back check felt smooth.

Though

the rotation

range

of the

repetition

lever 32a

can

not

regulated,

the

height

of the

semi-spherical portion

32c is deter-

mined

an optimum

value.

Therefore,

there is

not

prob-

lem in

playing

characteristics.

The

upright piano implementing

the fourth embod-

iment achieves all the

advantages

of the first embodi-

ment.

Although particular

embodiments of the

present

in-

vention have been shown and

described,

it will be obvi-

Fourth Embodiment

1 2 3 4 5 6 7 8 9 10 11 12 ... 19 20

EP 0 585 798 B1 12
IP 0 585 798 B1 20

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