JPH0119192Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a pedal mechanism for stringed instruments such as pianos. Taking the pedal mechanism of an upright piano as an example, as shown in Fig. 1, the loud effect (also called damper effect) pedal 1a,
It has a muffler effect pedal 1b, a soft effect pedal 1c, and three effect pedals, and these three pedals are independently connected to a balance table 2, a balance 3a, 3b, and 3c, which are similar motion transmission members. , a damper rod 5a, a muffler rail 5b, and a hammer rail 5c, which are drive parts, are driven by the thrust rods 4a, 4b, and 4c. In such a conventional pedal mechanism, pedals 1a, 1b, 1c, balance stand 2, balances 3a, 3b, 3c, thrust rods 4a, 4b,
It requires three series of parts that have exactly the same shape as 4c, and the installation space and man-hours must be taken into account, which is also not desirable in terms of cost.

This invention was made in view of the above-mentioned drawbacks, and is a pedal motion transmission mechanism having a motion transmission member that drives each drive section to obtain a loud effect, a muffler effect, and a soft effect by operating the pedal. , a switching selection device is provided between each of the drive units and the motion transmission unit, so that one series of the motion transmission member can switch and select the drive units of the plurality of series. The present invention provides a pedal mechanism for a stringed instrument such as a piano, which is advantageous in terms of cost because it has a reduced number of parts and space for installing the parts.

Hereinafter, the pedal mechanism for a stringed instrument such as a piano according to this invention will be explained in detail with reference to the drawings of the embodiments.

FIG. 2 is a schematic diagram of the main parts showing one embodiment of the pedal mechanism for a stringed instrument such as a piano according to this invention.
The same numerals as in the figure have the same effect as explained in FIG. 1. In the embodiment shown in the figure, the motion transmission member for the muffler effect and the soft effect is shared by a common pedal 1.
b, the balance stand 2, the balance 3b, and the thrusting rod 4d form one series, and the respective drive parts of the muffler rail 5b and hammer rail 5c are driven by the thrusting rods 4b and 4c; The rods 4b, 4c are held by a guide body 7 provided on the inner surface of the side plate of the main body so as not to fall off, and the lower ends of the lift rods 4b, 4c are made to protrude from the lower surface of the guide body 7. Further, the thrusting rods 4d of the movement transmitting members arranged in one series are controlled by the guide body 7 by the switching selection device 6 provided at the tip of the thrusting rods 4d.
The lower ends of the lifting rods 4b and 4c protruding from the lower surface are freely switched and connected to be driven. The switching selection device 6 includes a selection knob 6a provided at the bottom of the keyboard shelf, and a shaft 6.
b, a support 6d provided on the inner surface of the side plate of the main body, and a cam 6c on this support 6d, and a selection knob 6.
The cam 6c rotates in the direction of the arrow B in response to the operation of the forward and backward direction arrow A in a, and the tip of the punching rod 4d is switched and selected so as to be freely joined to the lower surface of either of the punching rods 4b and 4c. It is something that can be done. In this embodiment, it has been described that the two effects, muffler effect and soft effect, are combined into one series, but the present invention is not limited to this embodiment.

As described above, according to the pedal mechanism for a stringed instrument such as a piano according to this invention, two types of effects, such as a muffler effect and a soft effect, can be achieved by the operation of one series of pedals, balance, and thrust rod by switching the switching selection device. The effect can be controlled, the feeling of pressing the pedal does not change in any way, and the number of parts and installation space can be reduced, which is advantageous in terms of cost.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of a main part for explaining a conventional pedal mechanism of a stringed instrument such as a piano, and FIG. 2 is a schematic diagram of a main part for explaining an embodiment of a stringed instrument such as a piano according to this invention. In the figure, 1...pedal, 2...balance head, 3
... Balance, 4 ... Thrust rod, 5 ... Drive section, 6 ...
Switching selection device 7... Guide body.

Claims (1)

[Scope of utility model registration request] In a pedal motion transmission mechanism having a motion transmission member that drives each drive section to obtain each effect of a loud effect, a muffler effect, and a soft effect by operating a pedal, a mechanism is provided between each of the drive sections and the motion transmission member. A stringed instrument such as a piano, characterized in that a switching selection device is provided, and by operating the switching selection device, the plurality of series of drive units can be selectively driven by one series of the motion transmission members. Pedal mechanism.