Key actuating apparatus and key actuation control system

一种作动装置、琴键的技术，应用在发电机/电动机、发声器械、仪器等方向，能够解决琴键作动装置大等问题，达到可靠变形的效果

Inactive Publication Date: 2008-03-12
YAMAHA CORP
View PDF1 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that the key actuator is large and heavy

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 actuating apparatus and key actuation control system
  • Key actuating apparatus and key actuation control system
  • Key actuating apparatus and key actuation control system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] Hereinafter, referring to FIGS. 1-6 , a piano key according to an embodiment of the present invention will be described. As shown in FIG. 1, the key actuation control system 1 has a function of applying a reaction force when a player manually plays a keyboard instrument. The keyboard actuation control system 1 is respectively connected to the keys 3 of the keyboard instrument.

[0041]The rear side 3b of the key 3 of the keyboard instrument is connected to the frame 5 via a polymer transducer 9 and is rotatably movable about an axis within a certain angular range. The key 3 is connected to the frame 5 so as to be rotatably moved or pivoted in directions A and B against the frame 5 by deforming the polymer transducer 9 . Also, a spring is connected to the key 3 to return the key 3 to the original position by applying force to the key 3 in the arrow A direction. It should be noted that the key 3 can be returned to the original position by using the returning force of th...

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

In order to realize a small and light key actuating apparatus for actuating a key which is rotatably supported with respect to a frame, a key actuating apparatus (7) is provided which includes a polymer transducer (9) for rotatably moving the key (3) by using a deformation of the transducer, wherein the transducer which is substantially formed in a plate shape includes: a polymer film (15) which is dielectric and made from an elastically deformable polymer material; and a pair of electrodes (17) arranged at both sides of surfaces of the polymer film, and the transducer is deformed corresponding to switching between an application of voltage and a lack of voltage between the electrodes.

Description

technical field [0001] The invention relates to a key actuating device and a key actuating control system. [0002] This application claims priority from Japanese Patent Application No. 2006-241791 filed September 6, 2006, the contents of which are incorporated herein by reference. Background technique [0003] Generally, a natural keyboard musical instrument such as an acoustic piano has a structure in which, for example, when a key is pushed, a natural sound is produced by striking strings with rotationally movable hammers. Such a natural keyboard instrument has an action between the keys and the hammers. The action exerts a special reaction force (the braking force of the keys) on the player via the keys. In other words, it is said that a natural keyboard instrument has its own key touch. [0004] On the other hand, a conventional electric keyboard musical instrument such as an electric keyboard capable of generating electric sound has a spring for returning the key to...

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): G10C3/00G10C3/12G10B3/12G10H1/36
CPCG10H2220/311G06F3/016G10H1/346Y10S310/80G10H1/34G10H1/32G10K15/00G10H1/00
Inventor 林好典铃木秀雄
Owner YAMAHA CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap