Unlock instant, AI-driven research and patent intelligence for your innovation.

Electroacoustic transducer

An electro-acoustic transducer and shell technology, applied in frequency/direction characteristic devices, transducer shells/cabinets/brackets, sensors, etc., can solve the problem of large diaphragm amplitude, inability to fully absorb back pressure, and inability to ensure sound pressure And other issues

Inactive Publication Date: 2009-08-05
STAR MICRONICS
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in this case, since the vibration amplitude of the diaphragm is also large, if the space on the rear side is small, the back pressure cannot be sufficiently absorbed, and thus there is a problem that the required sound pressure cannot be ensured.

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

Embodiment Construction

[0035] Embodiments of the present invention will be described below with reference to the accompanying drawings.

[0036] figure 1 It is a side sectional view showing a state in which an electroacoustic transducer device 10 according to an embodiment of the present invention is arranged facing upward, figure 2 and image 3 Its top and bottom views.

[0037] As shown in these drawings, in the electroacoustic transducer device 10 of this embodiment, the electroacoustic transducer 12 is housed inside the casing 14 and used in a state of being mounted on a mobile phone or the like.

[0038] The above-mentioned electro-acoustic transducer 12 is an electro-acoustic transducer with an outer diameter of about 10-20mm, which includes a diaphragm 22, a bracket 24 supporting the outer peripheral portion of the diaphragm 22; a voice coil 26 whose front end is fixed on the diaphragm 22 ; the magnetic circuit unit 28 formed with a cylindrical magnetic gap for accommodating the rear end ...

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

The present invention provides an electroacoustic transducer device capable of ensuring sufficient sound even when the electroacoustic transducer is used for both a speaker and a receiver, and can secure a sound pressure required for use as a speaker. The diaphragm is used as a boundary to divide the internal space of the case housing the electro-acoustic transducer into a front side space and a rear side space, and the rear side space is divided into a first space facing the rear sound-emitting hole and a second space other than it. Second space. In addition, the sound radiated from the front sound hole is used as the sound of the speaker, and the sound radiated from the rear sound hole is used as the sound of the receiver. In this case, the volumes of the front side space and the first space are small, and the resonance effect ensures sufficient sound quality as a speaker and a receiver. In addition, the volume of the second space is sufficiently large, and even when the vibration amplitude of the diaphragm is large, the back pressure can be sufficiently absorbed to ensure the required sound pressure.

Description

technical field [0001] The present invention relates to an electroacoustic transducer device in which an electroacoustic transducer is accommodated inside a casing. Background technique [0002] In general, a portable communication device such as a mobile phone is provided with an electroacoustic transducer such as a call receiver and an incoming call notification speaker. [0003] At this time, Patent Document 1 describes an electroacoustic transducer device that uses a case of a portable communication device as a case for accommodating an electroacoustic transducer. [0004] In the electroacoustic transducer device described in this patent document 1, the internal space of the casing is divided into a front side space and a rear side space with the diaphragm of the electroacoustic transducer as a boundary, and on the front wall and the rear side wall of the casing, A front sound emitting hole and a rear sound emitting hole are provided respectively to communicate the fron...

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 Patents(China)
IPC IPC(8): H04R1/34H04R1/02H04R9/00
Inventor 出野胜也漆畑潔漆畑潔
Owner STAR MICRONICS