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Description 1, title of the invention
Microphone combined speaker attached to the ear canal
Detailed Description of the Invention The present invention is a combination of a transducer for
bone conduction voice at the time of speech detection from the ear canal wall, a so-called ear
canal microphone, and a speaker, so-called earphone, for emitting sound into the ear canal.
"Speaker". A so-called external auditory canal microphone is a transducer that pressure-treats the
skull's vibration when a person utters with the pelvic head from the external ear canal wall as
eight voice signals, and it usually detects the sound emitted to the outside from the lip through
the vocal tract. It is a microphone that is particularly effective for use in a noisy environment,
etc., as compared to a microphone. One of the devices which is practically used as such an ear
canal microphone is an ear canal microphone 16 provided with a piezoelectric element 14
supported in a cantilever manner by a damper 12 inside a cylindrical case 10 as shown in FIG.
1A. . A weight 18 is provided at the free end of the piezoelectric element 14, which forms an
acceleration-type vibration pick-up). Such a microphone 6 is an apparatus at the outer end
portion of the ear canal formed by the ear canal wall 20 and the tympanic membrane 22 as
shown in FIG. It can be detected in the form of electrical signals. The present invention is
characterized in that this kind of external ear canal microphone is equipped with a function of
sound emission, so that it is configured as a microphone / speaker, and in that case the function
of the microphone and the function of the speaker operate independently of each other. At the
same time, while listening to the fame with the simultaneous call R 1 'speaker, follow-up
transmission is made EndPage: 1 possible by the ear canal microphone part. 2 to 4 show an
embodiment of the present invention, wherein 24 shows a mounting portion of an ear canal
microphone / speaker to the ear canal, 26 shows an insertion cylindrical portion, and inside
thereof the piezoelectric described above in relation to 11g1A, The element 14 'is cantilevered by
a damper 12' and has a weight 18 at its free end. A path is a sound output hole, and a sound
transmitted through a hollow pipe 30 from a sound source such as a speaker to be described
later is emitted into the ear canal through this hole and detected by the eardrum C2. It is in
communication with the cavity portion 36 through the passage 32 of the voice output drilling
cylindrical portion 26. The cavity 36 is formed by an engagement part 38 with the pinna and,
together with the cylindrical part 26, is preferably made of a molded plastic body. The hollow
pipe 30 communicates with the cavity 36 of the pinna engagement portion 38. Preferably, the
pipe is flexible so that it does not block the internal passage when bent. It is further preferred
that the internal passage is not blocked by crushing.
A shield wire 40 serving as an output lead of the piezoelectric element 14 extends inside the pipe
blade. Although the configuration shown in FIG. 4 extends, the configuration merely utilizes the
sound path of the pipe 30, so the cable 7 may be extended separately from the pipe or the cable
or lead may be embedded in the wall of the pipe. It is clear that even FIG. 3 shows the
configuration of the costor unit at the other end of the pipe blade. Generally, this embodiment is
in the form of [RcA pin jack]? なしている。 Therefore, it is possible to electrically engage any "R,
CA type" plug and provide an electrical connection 2 of the microphone portion. FIG. 4 shows the
plug portion. In FIG. 3, the end on the jack side of the pipe 30 is in airtight communication with
the substantially bell-shaped hollow protective cover 52 of the jack 50. The open side of the
hollow protective cover 52 airtightly engages with the metal ring 54 serving as the negative
electrode of the jack 50 at one end. A hollow pin is coaxially attached to the center of the ring 54
by a spacer 58. Cover 52, ring 54. The partition plate 58 forms an airtight cavity 60 and allows
the pipe blade to communicate with the inside of the pin 56. The pin 56 is a positive electrode of
a shack and has an opening / opening 62 at its outer end. A notification from a sound source
such as a speaker to receive from this opening 62 is a hollow portion of the pin 56. Jack 50Q)
cavity 60, pipe 30. The cavity 36 ° cylindrical portion 26σ of the pina engaging portion 38 of
the mounting portion of the microphone / speaker shown in FIG. 2 is transmitted through the
passage 32 and the distal end outlet 28 into the ear canal 7. FIG. 4 shows, for example, 64 plugs
attached to the casing 64 of the transceiver. 3) is engaged with the plug 64, and the inner cavity
of the ring electrode 54 of the jack is engaged with the outer peripheral metal portion 66 of the
plug 64. The outer periphery of the pin 56 of the jack 50 engages with the inner peripheral
metal portion 68 of the plug 64. The outer metal part 66 and the inner metal part 68 have their
ears 67. 69, on which the leat 70 is covered by Sakurajima, and the pressure is L7 in the
microphone part through the lead through the city, Qi No.3 is given to amplifier etc.-Outer metal
part 66 and inner circumference metal part 68 are attached to hollow insulator 74, sound
pressure source 72 such as electric speaker is attached and detached at its end. It is marked
possible. The speaker 72 emits a sound in the opening 56 of the jack 56 of the jack cricket 56
engaged with the metal portion 68 (in this case, π corresponds to the opening 28 of the ear
engaging portion of FIG. 2). Through the ear canal (-radiated. The present invention (two external
ear canal microphones and speakers can be operated independently only for the microphone
function and the speaker function, and in the case of the microphone function Q) any one (, CA
type plug 1: can be connected).
It is possible to perform both functions7 by slightly σ) improving the RCACA type and TK plug
connector configuration. Also, both the microphone and speaker functions can be operated
simultaneously and without affecting each other. Therefore, according to the embodiment of the
present invention, communication of simultaneous calls can be performed.
4. Brief description of the drawings 'L1 Figure A is a cross-sectional view of a conventional ear
canal microphone described in the context of the present invention, ¥ l [g' B is attached to the ear
canal of a microphone 乞 human being in Figure 1 A Schematic which shows a state. FIG. 2 is a
schematic sectional view of the auricle engaging portion of the ear canal microphone and
speaker according to the present invention, and a third factor is a schematic view of the jack
portion of the connector used in the present invention. It is a schematic sectional drawing
EndPage: 2 of the plug part of the connector to be used. In the figure, 28 is a speech hole, 30 is a
hollow pipe, 62 is a turtle 1 g, and an opening of Hin 5 b! Show. Patent applicant Zener 7L,
Research of Electronics Attorney, attorney patent attorney 1) Takesanbe. Fig. 1 (A) 16 (B)
EndPage: 3
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