CN2253896Y - Earphone type talking device - Google Patents

Earphone type talking device Download PDF

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Publication number
CN2253896Y
CN2253896Y CN 96202388 CN96202388U CN2253896Y CN 2253896 Y CN2253896 Y CN 2253896Y CN 96202388 CN96202388 CN 96202388 CN 96202388 U CN96202388 U CN 96202388U CN 2253896 Y CN2253896 Y CN 2253896Y
Authority
CN
China
Prior art keywords
fixed
sound pipe
fet
piezoelectrics
field effect
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 96202388
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Chinese (zh)
Inventor
何景芳
刘春良
张纯
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN 96202388 priority Critical patent/CN2253896Y/en
Application granted granted Critical
Publication of CN2253896Y publication Critical patent/CN2253896Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to an earplug type talking device for radio communication, which has the structure that a sound pipe conducting wire with a shield is connected with a field effect triode in an outer shell by a sheath; the field effect triode is welded and fixed on a wire fixing plate; a piezoelectrics is fixed in the center of an inner shell by a fixing plate; the inner shell is fixed at the upper part of a cylinder of an inner earplug of the outer shell; a shielding layer of the sound pipe conducting wire is connected with a source pole of the field effect triode and one end of the piezoelectrics, the other end of which is connected with a gate pole of the field effect triode; a drain pole of the field effect triode us connected with a core wire of the sound pipe conducting wire. The utility model has the advantages of simple structure, convenient operation and strong anti-interference ability, and can improve the speech quality.

Description

The ear type communication
The utility model relates to the ear type communication that a kind of radio communication is used.
The wireless telecommunications system that departments such as public security at present, railway use mostly adopts the conductance mode to converse, necessary hand-held radio telephone or transmitter in conversation, both hands had both been taken, unfavorable again maintaining secrecy, and it is affected by environment big, as in noisy market or by the railway, be difficult to the communication effect that reaches desirable.
The purpose of this utility model just provides a kind of novel ear type communication.
The purpose of this utility model is achieved like this, utilize the structure of insert earphone shell, portion dress piezoelectrics and fet within it, and with the same external communications of sound pipe lead, piezoelectrics and fet are packed on the terminal block, and are fixed by fixed head.
The utility model is simple in structure, and shield effectiveness is good, and antijamming capability is strong, and is easy to use, is big the improvement and innovation to existing communicator.
Describe structure of the present utility model in detail below in conjunction with accompanying drawing.
Fig. 1 is structure chart of the present utility model (partly cut-away).
Fig. 2 is electric key wiring diagram.
By shown in Figure 1, its structure of the utility model is, the sound pipe lead 6 of band shielding joins with the fet 2 in the shell body 1 by rubber sheath 7, fet 2 is weldingly fixed on the terminal block 3, piezoelectrics 5 are fixed on inner housing 4 centers by fixed head 9, inner housing 4 is fixed on earplug cylinder top in the shell body 1 by fixed head 9, the screen of sound pipe lead 6 connects the source plate S of fet and an end of piezoelectrics, the grid G of another termination fet of piezoelectrics, the drain D of fet connects the heart yearn (seeing shown in Figure 2) of sound pipe lead 6, shell is the earplug shape, shell earplug cylinder end has outlet, is used to draw shake signal and send and listen to sound of otica.Sturdy and durable for it, interior sound pipe lead of shell and inner housing are buckled 8 by solidus and are fixed tightly in together.After inner first portion installs, use the epoxide-resin glue sealing in the housing on fixed head 9 tops.
By above-mentioned situation as can be known, the utility model is a kind of contact anti-noise device, its work is to pick up bone conduction (because of the language vibrates) mechanical oscillation signal that is transmitted by head, convert the signal of telecommunication again to, its inverting element adopts double piezoelectrics, and the version that its one-tenth is parallel with duct, utilize its piezoelectric energy-conversion effect, convert the vibration signal of its external auditory meatus to the signal of telecommunication, send after amplifying via fet, during use, since be to insert in the external auditory meatus, thus very insensitive to external air borne sound sound, so have good anti-noise effect, can improve speech quality greatly, it is applied must be popular with users.

Claims (2)

1, a kind of shell body is the ear type communication of earplug shape, it is characterized in that joining by the fet (2) in the same shell body of rubber sheath (7) (1) with the sound pipe lead (6) of shielding, fet (2) is weldingly fixed on the terminal block (3), piezoelectrics (5) are fixed on inner housing (4) center by fixed head (9), inner housing (4) is fixed on the interior earplug cylinder of shell body (1) top by fixed head (9), the screen of sound pipe lead (6) connects the source S of fet and an end of piezoelectrics, the grid G of another termination fet of piezoelectrics, the drain D of fet connects the heart yearn of sound pipe lead (6).
2, ear type communication according to claim 1 is characterized in that sound pipe lead and inner housing are buckled (8) by solidus in the shell to be fixed tightly in together, uses the epoxide-resin glue sealing in the housing on fixed head (9) top.
CN 96202388 1996-01-31 1996-01-31 Earphone type talking device Expired - Fee Related CN2253896Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 96202388 CN2253896Y (en) 1996-01-31 1996-01-31 Earphone type talking device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 96202388 CN2253896Y (en) 1996-01-31 1996-01-31 Earphone type talking device

Publications (1)

Publication Number Publication Date
CN2253896Y true CN2253896Y (en) 1997-05-07

Family

ID=33888360

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 96202388 Expired - Fee Related CN2253896Y (en) 1996-01-31 1996-01-31 Earphone type talking device

Country Status (1)

Country Link
CN (1) CN2253896Y (en)

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee