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High-frequency current supressor capable of being readily attached to cable or like and earphone system using same

A high-frequency current and suppressor technology, which is applied to the structural components of transient suppressors, transmission systems, telephone structures, etc., and can solve problems such as electronic information equipment failures

Inactive Publication Date: 2002-08-28
TOKIN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

resulting in failure of electronic information equipment

Method used

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  • High-frequency current supressor capable of being readily attached to cable or like and earphone system using same
  • High-frequency current supressor capable of being readily attached to cable or like and earphone system using same
  • High-frequency current supressor capable of being readily attached to cable or like and earphone system using same

Examples

Experimental program
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Effect test

no. 1 example

[0045] First, referring to FIG. 1(a) and FIG. 1(b), a high-frequency current suppressor according to a first embodiment of the present invention will be described.

[0046] As shown in FIG. 1(a), the high-frequency current suppressor 101 is substantially composed of a composite magnetic material including soft magnetic powder obtained by flattening an alloy powder including at least Fe, Si, and Al, and a binder material. The composite magnetic material is molded into a cylinder with an inner diameter of 1.5 mm, an outer diameter of 2.65 mm, and a length of 10.0 mm. The composite magnetic material has a split 113 on a portion of the cylinder along its length. Therefore, the molded composite magnetic material has flexibility.

[0047] On the other hand, FIG. 1(b) shows a case where a high-frequency current suppressor 101 made of a composite magnetic material is mounted to a signal cable 112 whose outer diameter dimension is about 1.5 mm. As described above, the high-frequency ...

no. 6 example

[0075] An earphone system according to a sixth embodiment of the present invention will be described with reference to FIG. 7(a) and FIG. 7(b). The structure of the headphone system according to the sixth embodiment is basically the same as that of the headphone system of the fifth embodiment shown in FIG. 6(a) and FIG. 6(b). Therefore, similar parts are denoted by like numerals and not described in detail.

[0076]As shown in FIG. 7( a ), the earphone system 202 includes a high-frequency current suppressor 225 installed in series at one end of the earphone 211 . As shown in FIG. 7( b), the high-frequency current suppressor 225 is formed to have an inner diameter of 1.55 mm, an outer diameter of 3.30 mm at the highest position, an outer diameter of 2.0 mm at the lowest position, and a length of 5.5 mm in a conical portion. Hollow conical. 7(a) and 7(b), in the case where the inner surface of the high-frequency current suppressor 225 is adhered to the outer surface 216a of th...

no. 7 example

[0078] Next, an earphone system according to a seventh embodiment of the present invention will be described with reference to FIG. 8(a) and FIG. 8(b). The structure of the headphone system according to the seventh embodiment is basically the same as that of the headphone system of the fifth embodiment shown in FIG. 6(a) and FIG. 6(b). Similar parts are denoted by like numerals and not described in detail.

[0079] As shown in FIG. 8(a), an earphone system 203 according to a seventh embodiment of the present invention includes a high-frequency current suppressor 235 installed on a signal cable 234 near an earphone 211, which is the same as the fifth embodiment described above. The signal cable 234 is a so-called coaxial cable. The signal cable 234 includes: an inner conductor (not shown); an outer conductor; an insulating coating for insulating the inner conductor from the outer conductor; and a cable insulating jacket for covering the outer conductor substantially along its ...

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Abstract

Earphone system 201 includes: earphone 211, microphone 212, connecting plug 213, signal cable 214 for connecting them and hollow cylinder high-frequency current suppressor 215, and hollow cylinder high-frequency current suppressor 215 is installed on the signal cable 214 close to the earphone 211 and cover the outer surface 216a of the cable sheath 216 . When used in mobile communication terminal equipment, the high-frequency current generated by electromagnetic waves generated by the terminal equipment can be reduced. The earphone system 201 can avoid the increase of the SAR value on the human head.

Description

technical field [0001] The present invention relates to a high-frequency current suppressor for suppressing high-frequency transmission noise in signal transmission cables used in various electronic information equipment such as mobile communication terminal equipment, audio-visual equipment, etc., and also relates to the use of such high-frequency Headphone systems with current suppressors. Background technique [0002] Generally, various signal transmission cables are used to transmit signals between devices or components of various electronic information equipment. [0003] On the other hand, in various audio-visual equipment for enjoying music or movies, adopting an earphone system including a signal transmission cable having a connection plug at its end, earphones or headphones can enable users to enjoy music or movies without Can be disturbed by surrounding sounds. [0004] In addition, for example, in recent years, in mobile communication terminal devices such as ce...

Claims

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Application Information

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IPC IPC(8): H04B1/38H04M1/60H04M1/62H04R1/10H05K9/00
CPCH04B1/3838H04M1/6041H04M1/62H04R1/1033H04R2201/107H05K9/0066H04R1/10
Inventor 小野裕司吉田荣吉
Owner TOKIN CORP
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