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

Electroacoustic transducer

Inactive Publication Date: 2016-06-02
TAIYO YUDEN KK
View PDF9 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention is about improving the sound quality of earphones and headphones by reducing sound pressure peaks caused by sibilant voal sounds. The invention provides an electroacoustic transducer with excellent high-frequency characteristics. The transducer has multiple areas of support for the vibration plate, which allows for more vibration and better sound quality. The periphery of the vibration plate is supported by an elastically deformable adhesive layer, which further enhances the high-frequency characteristics. Overall, this invention improves the sound quality of earphones and headphones by reducing sound pressure peaks and providing better high-frequency characteristics.

Problems solved by technology

When music is played, etc., for example, sibilant vocal sounds appearing in the high-frequency band may lead to lower sound quality.

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
  • Electroacoustic transducer
  • Electroacoustic transducer
  • Electroacoustic transducer

Examples

Experimental program
Comparison scheme
Effect test

first embodiment

[0069]FIG. 3 is a general perspective view of a speaker unit pertaining to the first embodiment of the present invention, while FIG. 4 is an exploded perspective view of the same.

[0070]The speaker unit 2 in this embodiment has a piezoelectric speaker 20 and support member 23.

[0071]The speaker unit 2 is housed inside a housing not illustrated here, to constitute an electroacoustic transducer for an earphone, headphone, etc.

[0072]The piezoelectric speaker 20 has a vibration plate 11 and piezoelectric element 12. The vibration plate 11 and piezoelectric element 12 are constitutionally identical to the vibration plate 11 and piezoelectric element 12 of the electroacoustic transducer 1 pertaining to the aforementioned reference example and therefore are not explained here.

[0073]On the other hand, the support member 23 supports the vibration plate 11 in multiple areas of its periphery 111. The support member 23 may be constituted by a part of the housing or by a member independent of the ...

second embodiment

[0087]FIG. 7 is a schematic lateral section view showing the constitution of a speaker unit 3 pertaining to the second embodiment of the present invention. Constitutions different from those of the first embodiment are primarily explained below, and the same constitutions as in the first embodiment are not explained or explained briefly using the same symbols.

[0088]The speaker unit 3 in this embodiment has a piezoelectric speaker 20 and support member 33. The speaker unit 3 is housed inside a housing not illustrated here, to constitute an electroacoustic transducer for an earphone, headphone, etc.

[0089]In this embodiment, the support member 33 elastically supports the periphery 111 of the vibration plate 11 all around. The support member 33 may be constituted by a part of the housing or by a member independent of the housing.

[0090]The support member 33 has an annular body 330, and a ring-shaped convex 333 that supports the periphery 111 of the vibration plate 11. The support member ...

third embodiment

[0100]A and B in FIG. 10 are a schematic lateral section view and plan view, respectively, showing the constitution of a speaker unit 4 pertaining to the third embodiment of the present invention. Constitutions different from those of the first embodiment are primarily explained below, and the same constitutions as in the first embodiment are not explained or explained briefly using the same symbols.

[0101]The speaker unit 4 in this embodiment has a piezoelectric speaker 20 and support member 43. The speaker unit 4 is housed inside a housing not illustrated here, to constitute an electroacoustic transducer for an earphone, headphone, etc.

[0102]In this embodiment, the support member 43 supports the vibration plate 11 in multiple areas of its periphery 111. The support member 43 may be constituted by a part of the housing or by a member independent of the housing.

[0103]The support member 43 has an annular body 430, and multiple projections 433 to support the periphery 111 of the vibrat...

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 an embodiment, an electroacoustic transducer has a piezoelectric speaker 20, housing, support member 73, and elastically deformable adhesive layer 74. The piezoelectric speaker 20 has a vibration plate 11 with a periphery 111, and a piezoelectric element 12 joined to the vibration plate 11. The housing houses the piezoelectric speaker 20. The support member 73 is constituted by a part of the housing or by a separate member, and supports the periphery 111. The adhesive layer 74 is provided between the periphery 111 and support member 73. The electroacoustic transducer can offer excellent high-frequency characteristics.

Description

BACKGROUND[0001]1. Field of the Invention[0002]The present invention relates to an electroacoustic transducer that can be applied to earphones, headphones, mobile information terminals, etc., for example.[0003]2. Description of the Related Art[0004]Piezoelectric sounding bodies are widely used as simple means for electroacoustic conversion, where popular applications include earphones, headphones, and other acoustic devices as well as speakers for mobile information terminals, etc., for example. Piezoelectric sounding bodies are typically constituted by a vibration plate and a piezoelectric element attached to it (refer to Patent Literature 1, for example).[0005][Patent Literature 1] Japanese Patent Laid-open No. 2013-150305SUMMARY[0006]In recent years, there is a demand for higher sound quality in the field of earphones, headphones, and other acoustic devices. Accordingly, improving their electroacoustic conversion function characteristics is an absolute must for piezoelectric soun...

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
IPC IPC(8): H04R17/00H04R1/02
CPCH04R17/00H04R2499/11H04R1/02H10N30/50H04R1/1075H04R7/20H04R2205/022H04R2440/07H04R1/24H04R9/02H04R17/10H04R2217/01H10N30/88
Inventor ISHII, SHIGEOTOMITA, TAKASHIITO, FUMIHISADOSHIDA, YUTAKAWATANABE, YOSHIYUKI
Owner TAIYO YUDEN KK
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