Title:
KEYBOARD DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/174263
Kind Code:
A1
Abstract:
The purpose of this invention is to enable the dynamic load and static load of a plurality of types of weights to be designed with a high degree of freedom, with a simple structure. A keyboard device according to one embodiment of this invention comprises: a frame; a plurality of keys positioned so as to be able to rotate with respect to the frame; and a plurality of rotating members, each comprising a support member positioned so as to be able to rotate freely about an axis of rotation, and a structure having a greater specific gravity than the support member and connected at a position away from the axis of rotation of the support member. A first structure and a second structure, which are structures of at least two of the first rotating members and the second rotating members from among the plurality of rotating members, have holes formed therein such that the mass of the first structure and the mass of the second structure differ, and the holes of the first structure and the second structure have different shapes.
Inventors:
TAKAHASHI KEN (JP)
ICHIKI SHUNSUKE (JP)
ICHIKI SHUNSUKE (JP)
Application Number:
PCT/JP2018/011837
Publication Date:
September 27, 2018
Filing Date:
March 23, 2018
Export Citation:
Assignee:
YAMAHA CORP (JP)
International Classes:
G10B3/12; G10H1/34
Foreign References:
| JP2001255875A | 2001-09-21 | |||
| JP2013076817A | 2013-04-25 | |||
| JP2015087592A | 2015-05-07 | |||
| JP2003186475A | 2003-07-04 | |||
| JP2004341326A | 2004-12-02 | |||
| JP2004037484A | 2004-02-05 |
Attorney, Agent or Firm:
CHUBU PATENT OFFICE (JP)
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