Fastening structure and keyboard device
AssigneeYamaha Corporation
InventorsKaoru Fujishiro, Ichiro Osuga
Life of this patent
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Abstract
A fastening structure for fastening a to-be-fastened component to a wooden component by using a screw, wherein the wooden component is made of wood having a specific gravity of 0.08 g/cm3 to 0.85 g/cm3 inclusive, the screw has a nominal diameter of 0.8 mm to 3.5 mm inclusive, and the distance between a neutral position in a longitudinal direction of an effective screw part, which is the portion where the wooden component and a male screw part formed in a shaft part of the screw mesh together, and the surface of the wooden component that comes into contact with the to-be-fastened component is 1 mm to 15 mm inclusive.
Claims6
A keyboard device having a fastening structure, comprising:
- a wood key of the keyboard device;
- a to-be-fastened component;
- and
- a screw for fastening the to-be-fastened component to the wood key, wherein
- the wood key is made of wood having a specific gravity of 0.08 g/cm3 to 0.85 g/cm3 inclusive;
- the screw has a nominal diameter of 0.8 mm to 3.5 mm inclusive;
- and
- the distance between an intermediate position in a longitudinal direction of an effective screw portion, which is the portion where the wood key and a male screw portion formed on a shaft portion of the screw mesh together, and a contact surface of the wood key with the to-be-fastened component is 1 mm to 15 mm inclusive.
Dependencies are inferred from the claim text.