Keyboard device

Abstract

The present invention includes a keyboard chassis 1; keys 2 which are arranged on the keyboard chassis 1 and rotate in an up and down direction by bending a bendable section 22 positioned in the rear; and a key rotation holding section 30 for holding the rotation fulcrum of a key 2 stable when it rotates in the up and down direction. Accordingly, the rotation fulcrum of the key 2 is kept stable by a first supporting section 31 and a second supporting section 32 of the key rotation holding section 30 when the key 2 is depressed and the bendable section 22 bends in the up and down direction, whereby the key 2 is stably rotated. Therefore, regardless of whether the front portion of the key 2 is being depressed or the rear portion thereof is being depressed, the rotation movement of the key 2 will always remain stable.

Description

[0001] This application is based on and claims priority from prior Japanese Patent Application No. 2010-248307 filed on November 5, 2010, the entire contents of which are incorporated herein by reference. technical field [0002] The present invention relates to a keyboard device for keyboard musical instruments such as an electronic piano or an electronic organ. Background technique [0003] Conventionally, among keyboard devices such as electronic pianos, as described in Japanese Patent Application Laid-Open No. 05-11747, there is known a device having a structure in which a key having a thinner curved portion curved in the vertical direction is used to bend the key. The curved portion of the keyboard is provided on the keyboard chassis so that it can rotate in the vertical direction, and the hammer that applies the operating load to the key as the key is pressed is installed on the keyboard chassis in a rotatable manner. member. [0004] In such a keyboard device, when t...

AI Technical Summary

Problems solved by technology

[0007] However, in such a conventional keyboard device, there is a problem that when the front portion of the key is pressed, the upper side deformation restricting portion of the key contacts the lower surface of the keyboard chassis, and the rear portion of the key is pressed. The part where the deformation limiting part of the lower side of the key abuts against the upper surface of the keyboard chassis is staggered in the front and back direction of the key, so when pressing the key on the front part of the key and when pressing the key on the rear part of the key The rotation fulcrum of the key is different in the front and rear directions of the key, and the rotation action of the key is not constant, resulting in discomfort during key operation

Images