Supercharge Your Innovation With Domain-Expert AI Agents!

Key operation detection unit of an electronic keyboard instrument

An electronic keyboard and detection device technology, applied in the direction of electro-acoustic musical instruments, instruments, electrical components, etc., can solve the problems of unsatisfactory key touch, unnaturalness, etc., and achieve excellent key touch, improved key touch, and uniform key press load Effect

Inactive Publication Date: 2007-01-24
YAMAHA CORP
View PDF1 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] When the influence of the reaction force from the detector on the key feel is not sufficiently considered in the above key operation detecting device, a large stepwise change in the key load causes a key feel quite different from that of an acoustic piano, resulting in an unnatural, Unsatisfactory key feel

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Key operation detection unit of an electronic keyboard instrument
  • Key operation detection unit of an electronic keyboard instrument
  • Key operation detection unit of an electronic keyboard instrument

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] Hereinafter, the present invention will be described in detail with reference to the drawings showing preferred embodiments of the present invention.

[0025] figure 1 is a side view of a keyboard device to which the key operation detection device according to the first embodiment of the present invention is applied.

[0026] refer to figure 1 , the keyboard device is configured to have a plurality of keys (in figure 1 In an electronic musical instrument in which only one key is shown by reference numeral 10 ), each key is arranged to pivot around a key fulcrum 14 provided in the frame 12 . The substrate 13 is fixed to the frame 12 . On this substrate 13 , key switches (only one is shown with reference numeral 20 ) are provided to correspond to the respective keys of the keys 10 . Each key 10 has a portion facing a corresponding one of the key switches 20 and serving as a switch driving portion 11 . The key 10 pivots about the key fulcrum when pressed, and as a res...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A key operation detection unit of an electronic keyboard instrument that suppresses increase in reaction forces with key depression operation, to improve a key touch feeling. A depression operation of any one of keys of the keyboard instrument is detected by first and second corresponding detectors of the detection unit. The detectors are surrounded by an outer resilient projection and each comprised of an inner resilient projection and a movable portion extending therefrom toward a base plate of the unit. With key depression, the movable portion of the first detector is in contact with the base plate and its inner resilient projection is deformed to generate a reaction force. With further key depression, the inner resilient projection of the second detector brought in contact with the base plate is deformed to generate a reaction force smaller than the reaction force from the first detector.

Description

technical field [0001] The present invention relates to a key operation detection device of an electronic keyboard musical instrument, the detection device including a detector that detects the key depression operation while generating a reaction force when the key depression operation is performed. Background technique [0002] Conventionally, there is known a key operation detection device (switch device) that includes a detector (switch) that detects a key depression operation and is moved by a moving member following the key depression operation (see, for example, Japanese Patent Application Laid-Open No. 04- 272626). This key operation detection device is provided with two detectors each including a fixed contact formed on a substrate and a movable contact formed on an elastic urging member driven by a key actuator. contacts. The movable contact and the fixed contact of the two detectors are brought into contact with a time difference during the key depression operati...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01H21/00
CPCG10H2220/291G10H1/346
Inventor 西田贤一
Owner YAMAHA CORP
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com