Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Piezoelectric fan

a technology of piezoelectric elements and fans, applied in the direction of machines/engines, positive displacement liquid engines, machine/engine details, etc., can solve the problems of disturbance of drive signals for driving piezoelectric elements, inability to obtain desired vibration, and possible electrical conduction. , to achieve the effect of reliably obtaining desired vibration and preventing electrical conduction

Inactive Publication Date: 2015-01-22
MURATA MFG CO LTD
View PDF6 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent describes a piezoelectric fan that prevents electrical conduction between the vibrating plate and external housing and obtains desired vibration. The main-body fixing hole is located in an area where the vibrating plate is not in contact with a supporting body, and a holding member is electrically insulated from the outside. This prevents external noise from interfering with drive signals and enables a compact piezoelectric fan to be provided.

Problems solved by technology

As a result, noise may propagate through the external housing to the vibrating plate 11.
If noise propagates to the vibrating plate 11, drive signals for driving the piezoelectric elements are disturbed by the noise and desired vibration cannot be obtained.

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
  • Piezoelectric fan
  • Piezoelectric fan
  • Piezoelectric fan

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033]A piezoelectric fan according to a first preferred embodiment of the present invention will be described with reference to the drawings. FIG. 1A is an external perspective view of a piezoelectric fan 10 according to the first preferred embodiment of the present invention. FIG. 1B is a plan view of the piezoelectric fan 10 according to the first preferred embodiment of the present invention. FIG. 1C is a lateral view of the piezoelectric fan 10 according to the first preferred embodiment of the present invention. FIG. 1D is a cross-sectional view taken along line A-A′ of the piezoelectric fan 10 according to the first preferred embodiment of the present invention. FIG. 2 illustrates a driving concept of the piezoelectric fan 10 according to the first preferred embodiment of the present invention. FIG. 3 is a plan view of a holding member 142 according to the first preferred embodiment of the present invention.

[0034]The piezoelectric fan 10 includes a vibrating plate 11, piezoel...

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 piezoelectric fan in which vibration of blades is unaffected by external noise includes a vibrating plate including blades and a base. First piezoelectric elements are attached to a side of a first blade adjacent to the base. Second piezoelectric elements are attached to a side of a second blade adjacent to the base. Third piezoelectric elements are attached to a side of a third blade adjacent to the base. A holder includes a supporting body and a holding member that sandwich the base therebetween. The holding member has a supporting portion and main-body fixing portions including respective main-body fixing holes. The main-body fixing portions extend from the supporting portion.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a piezoelectric fan that blows air by using a piezoelectric element as a drive source to a vibrate blade.[0003]2. Description of the Related Art[0004]Conventional piezoelectric fans that use a piezoelectric element as a drive source are described, for example, in Japanese Unexamined Patent Application Publication No. 2-33500 and International Publication No. 2009 / 119431.[0005]The piezoelectric fan described in Japanese Unexamined Patent Application Publication No. 2-33500 includes a vibrating plate and piezoelectric elements. One end of the vibrating plate is divided into three blades, whereas the other end of the vibrating plate is provided with main-body fixing holes. The piezoelectric elements are attached to the respective blades. The piezoelectric element on the central blade and the piezoelectric elements on the right and left blades are polarized in opposite directions. When an al...

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(United States)
IPC IPC(8): F04D33/00F04D25/06
CPCF04D33/00F04D25/0606F04D23/006H01L23/467H01L41/094H01L2924/0002H10N30/2042H01L2924/00
Inventor TANAKA, NOBUHIRA
Owner MURATA MFG CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com