Keyboard device for electronic keyboard musical instrument

• US 6,653,542 B2
• Filed: 05/02/2002
• Issued: 11/25/2003
• Est. Priority Date: 06/26/2001
• Status: Active Grant

• Current Assignee: Kabushiki Kaisha Kawai Gakki Seisakusho
• Original Assignee: Kabushiki Kaisha Kawai Gakki Seisakusho
• Inventors: Suzuki, Akihiro, Shimoda, Yoshiaki
• Primary Examiner(s): LOCKETT, KIMBERLY R
• Application Number:
  US10/136,369
• Publication Number:
  US 20020194982A1
• Time in Patent Office: 572 Days
• Field of Search: 844/23.R, 844/24, 844/25, 844/33, 844/36, 844/38, 844/39, 844/42
• US Class Current: 84/423.00R
• CPC Class Codes: G10C 3/12 Keyboards; Keys
• CPC Class Codes: G10H 1/346 Keys with an arrangement for simulating the feeling of a piano key, e.g. using counterweights, springs, cams

Abstract

A keyboard device for an electronic keyboard musical instrument is provided for reducing the manufacturing cost by reducing the number of parts and the number of assembling steps associated with the attachment of a substrate, and securely attaching the substrate to a chassis through a spacer. The keyboard device comprises a plurality of keys; a chassis for supporting a plurality of keys; a substrate attached to the chassis for detecting information on depression on the keys; and a spacer interposed between the substrate and chassis. The spacer has tabs for preventing rotation, while the substrate is formed with engaging holes. The spacer is attached to the substrate with the tabs in engagement with the engaging holes. The substrate is attached to the chassis with a first screw driven into the spacer through the chassis.

Claims

1. A keyboard device for an electronic musical instrument, comprising:

a plurality of keys;

a chassis for supporting said plurality of keys;

a substrate attached to said chassis for detecting information on depression on said plurality of keys, said substrate having an engaging hole;

a spacer interposed between said substrate and said chassis, said spacer having a tab for preventing rotation, such that said spacer is attached to said substrate with said tab in engagement with said engaging hole; and

a first screw driven into said spacer through said chassis for attaching said substrate to said chassis.

2. A keyboard device for an electronic keyboard musical instrument according to claim 1, wherein said tab is elastic, and snap fitted into said engaging hole of said substrate.

3. A keyboard device for an electronic keyboard musical instrument according to claim 2, wherein said spacer is fixed to said substrate with a second screw driven into said spacer through said substrate.