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Key apparatus

A device, keyboard technology, used in wind instruments, instruments, electroacoustic instruments, etc.

Inactive Publication Date: 2011-11-09
YAMAHA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a limit to the setting for lightening the key touch, so further improvement is required in significantly and widely changing the key touch

Method used

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  • Key apparatus
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Examples

Experimental program
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Effect test

Embodiment Construction

[0088] The invention will now be described in detail with reference to preferred embodiments shown in the accompanying drawings.

[0089] figure 1 It is a side view of the keyboard device according to the first embodiment of the present invention. The keyboard device of this embodiment includes: a chassis 1, on which a key body 10 to be pressed is supported ( figure 1 In the white key shown as an example); the hammer body 20, each hammer body is used to act on the key body 10 associated with it with the medium inertial force in the process of depressing the key, etc., so that the hammer body can do swing vertically. Hereinafter, the free end side of key body 10 (asfigure 1 shown on the right) will be referred to as "Front".

[0090] The rear end of the key body 10 is supported so that the key body 10 can pivot vertically about the key pivot 2. The key body 10 has a counterweight 11 installed at the rearmost end of the key hub 2, and the counterweight 11 usually moves along...

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PUM

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Abstract

A keyboard apparatus which is capable of enhancing key touch feeling. The keyboard apparatus has a chassis ( 1 ), and key bodies ( 10 ) to be depressed are supported by the chassis. A hammer body ( 20 ) associated with each of the key bodies is driven by the key body via engagement with the same to move in a key depressing direction to thereby impart an inertial force to the key body when the keyis depressed. The state of engagement between the key body and the hammer body suddenly changes as the key depressing velocity changes across a predetermined key depressing velocity, such that when the key depressing velocity is higher than the predetermined key depressing velocity, the hammer body hardly moves in the key depressing direction, whereas when the key depressing velocity is not higher than the predetermined key depressing velocity, the hammer body moves in the key depressing direction.

Description

technical field [0001] The present invention relates to a keyboard device in which a key actuation arm moves when a key is depressed so as to apply an inertial force to the key. Background technique [0002] Traditionally, arms with weights are provided in known keyboard devices so that each arm moves, eg pivots, as the associated key is depressed to improve key tactility. [0003] For example, a keyboard device disclosed in Japanese Laid-Open Utility Model Publication (Kokai) No. H02-64992 is configured such that an arm having a counterweight is pivotally provided on a sliding member that slides as the key is pressed, so that the The displacement of the depressed relative key is transmitted to the sliding element. The associated arm is driven by the key for pivotal movement during the first half of the key depression stroke when the key is depressed; ;then the arm stops pivoting. As a result, the load of the arm does not act on the key from then on. [0004] In addition...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10H1/34G10B3/12
Inventor 船木知之
Owner YAMAHA CORP