Keyboard device and manufacturing method thereof

A keyboard device comprising:

• a plurality of white keys, each of which is supported by a support member;
• and
• a plurality of hinges, each of which has:
• a pair of base parts, joined to the support member and separated from each other with a predetermined gap therebetween in a width direction of the white keys, and
• a connection part, connecting the pair of base parts and each of the white keys to each other in a longitudinal direction of the white keys,
• wherein the hinges at least includes:
• first hinges, and second hinges which are joined to the support member on a side above the first hinges, and
• wherein a thickness dimension of the connection part is set to be larger in the first hinges than in the second hinges.

A manufacturing method of a keyboard device, comprising:

• providing a plurality of keys, each of which is supported by a support member;
• and
• providing a plurality of hinges, each of which has:
• a pair of base parts, joined to the support member and separated from each other with a predetermined gap therebetween in a width direction of the keys, and
• a connection part, connecting the pair of base parts and each of the keys to each other in a longitudinal direction of the keys,
• wherein a dimension of the connection part in the longitudinal direction of the keys is set to be larger than dimensions of the base parts in the width direction of the keys.