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

Manufacturing method of speaker

A manufacturing method and loudspeaker technology, which can be applied to sensors, transducer housings/cabinets/stands, electrical components, etc., and can solve problems such as difficulty in placing in specified positions.

Inactive Publication Date: 2009-01-14
PANASONIC CORP
View PDF1 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when arranging multiple magnetized magnets, it is difficult to properly arrange them at a predetermined position due to the attractive or repulsive force of these magnets.

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
  • Manufacturing method of speaker
  • Manufacturing method of speaker
  • Manufacturing method of speaker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] Hereinafter, taking a mobile phone as an example of electronic equipment, embodiments of the present invention will be described with reference to the drawings. figure 1 It is a perspective view of a mobile phone to which the speaker according to the embodiment of the present invention is applied. Figure 2A to show from figure 1 The perspective view of the mobile phone shown with the cover removed, Figure 2B for figure 1 The block diagram of the cell phone is shown. image 3 for Figure 2A An exploded perspective view of the loudspeaker shown. Figure 4 for Figure 2A The loudspeaker shown is cut along its length, while the Figure 5 It is a sectional view cut along the width direction. Image 6 for Figure 5 An enlarged cross-sectional view of part A in the middle.

[0029] The outer surface side of the main body 1 of the mobile phone that is an electronic device is as figure 1 As shown, two covers 3 are provided, and the inside of the main body 1 on the ba...

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 a process for manufacturing speaker. In a speaker, three magnets are disposed via magnetic gaps for placing of voice coil. The magnetic poles of ambilateral magnets are magnetized so that homopoles face each other. The central magnet has its both poles disposed in the direction orthogonal to the line binding the poles of the ambilateral magnets. The ambilateral magnets are fixed to a nonmagnetic plate. In the manufacturing of this speaker, two unmagnetized magnetic substances are disposed opposite to each other with a given spacing therebetween on a nonmagnetic plate and thereafter magnetized to thereby form the ambilateral magnets.

Description

technical field [0001] The present invention relates to a method of manufacturing a thin loudspeaker. Background technique [0002] Electronic devices such as portable devices are required to be thinner, and accordingly, speakers built into their housings are also required to be thinner. [0003] In order to make the conventional loudspeaker described in Patent Document 1 thinner, the magnets forming the magnetic circuit are usually made smaller. Once the magnet gets smaller, its magnetic force becomes weaker, and the sound output eventually becomes smaller. Consequently, the magnets cannot be made too small, with the result that existing loudspeakers are not thin enough. [0004] Therefore, in order to solve the problem of miniaturization of such magnets, it is being studied to make the speaker smaller and thinner by dividing the magnets and arranging them at optimal positions. However, when arranging a plurality of magnetized magnets, it is difficult to properly arrange...

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): H04R9/02H04R1/02H04R31/00
Inventor 川边昌志本田一树佐野浩司堤真实子
Owner PANASONIC CORP