KEYBOARD APPARATUS AND KEYBOARD INSTRUMENT

摘要

A keyboard apparatus is provided, which is provided with plural keys 2 disposed in parallel, plural transmission members 10 rotating in response to a key pressing operation on the plural keys, and plural hammer members 11 rotating in accordance with rotation of the transmission member to give an action load to the key. The weights of the transmission members together with the weights of the hammer members bring the plural keys to the initial positions and initial loads of the keys are adjusted by the weights of the hammer members. Even if the weight of the hammer member is changed, the initial load of the key can be adjusted based on the weight of the transmission member. Therefore, when the weights of the hammer members are changed, the initial loads of the keys can be kept constant on the high-pitched tone side and the low-pitched tone side.

主权项

1. A keyboard apparatus comprising:
plural keys; plural transmission members provided for the plural keys respectively, each having one of plural kinds of weights, each of which displaces, when a corresponding key is pressed by a user; and plural hammer members provided for the plural keys respectively, each having one of plural kinds of weights, each of which swings in accordance with displacement of the corresponding transmission member, when the corresponding key is pressed by the user, thereby applying an action load onto the pressed key.