Key actuating apparatus

An actuating device and actuating technology, applied in the direction of instruments, electro-acoustic musical instruments, etc., can solve the problems of uncomfortable key touch, recoil, unnaturalness, etc.

Inactive Publication Date: 2008-09-24
YAMAHA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, in the case where the plunger and the key are connected by a sliding mechanism composed of a plurality of members such as that shown in Patent Document 2, there is a possibility of backlash among

Method used

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Examples

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Embodiment Construction

[0049] The following will refer to Figure 1-Figure 6 A key actuating device of an embodiment, which is an example of the present invention, is described.

[0050] figure 1 A plurality of keys 3 shown in is actuated by the key actuating device 1, and the plurality of keys 3 are arranged in parallel and in a row on a frame (not shown in the figure), which constitutes a key such as an electronic piano. The shell (package) of the keyboard device. Each key 3 is supported by a fulcrum F1 on the side of the rear end 3b in the length direction so as to be rotatable in the vertical direction.

[0051] A key actuating device 1 is provided and corresponds to each key 3 . The key actuator 1 is provided below the key 3 and is provided with a substantially rod-shaped rotatable lever (weight member) 5 and a solenoid 7 for actuating the key 3 and the rotatable lever 5 .

[0052] The rotatable lever 5 is arranged such that its lengthwise direction corresponds to the longitudinal direction...

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Abstract

In order to improve a touch of a key of a keyboard musical instrument by using a key actuating apparatus which actuates the key supported so as to be rotationally movable with regard to a frame of the keyboard musical apparatus, a key actuating apparatus ( 1 ) includes: a plunger ( 15 ) which is moved on an arc or curved line in correspondence with a rotational motion of a key ( 3 ); and a solenoid ( 7 ) including electro magnets ( 17 and 19 ) which are fixed to the frame and which are substantially in a cylindrical shape into which the plunger is inserted. The plunger ( 15 ) is formed in an arc or curved shape extended in a direction of a rotational motion of the plunger ( 15 ). A head end ( 15 b) arranged on the plunger ( 15 ) in a lengthwise direction is made from a magnetic body.

Description

technical field [0001] The present invention relates to a key actuating device. [0002] Priority is claimed from Japanese Patent Application No. 2007-077042 with a filing date of March 23, 2007, the contents of which are incorporated herein by reference. Background technique [0003] Generally, a natural keyboard musical instrument such as an acoustic piano has a configuration in which, for example, a string is struck by a rotatable hammer when a key is depressed to produce a natural sound effect. This natural keyboard instrument has an action mechanism between the keys and hammers. This action mechanism applies a specific reaction force (braking force of the key) to the player through the key. In other words, since a natural keyboard instrument has an action mechanism, this instrument has a characteristic key touch. [0004] On the other hand, conventional electronic keyboard instruments such as electronic keyboards that produce electronic sounds have mechanical parts s...

Claims

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Application Information

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IPC IPC(8): G10H1/34
CPCG10H1/346
Inventor 小松昭彦
Owner YAMAHA CORP
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