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JPS502922

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DESCRIPTION JPS502922
Patent Office Secretary Saito Hideo 1, Title of Invention ■ Japan Patent Office Open Patent
Gazette ■ JP-A-5 (12,922 Examination Request not Requested (All 4 Pages))
Headphones 2, number of inventions claimed in the claims J 7 Sea name Rudolf Gehrink
whereabouts Austria Klin Tj Prunhilden Guts 41
DETAILED DESCRIPTION OF THE INVENTION The earpiece with at least an JA electrodynamic
transducer or the conversion It is embedded 11 in a foam material, in particular with a head
spring, at its end an earpiece or transducer Mounted with a container. It relates to a type
handset. Research has been conducted on the reproduction of three-dimensional sound in
conventional earpieces and company transducer containers, and in particular by means of a
truncated funnel-type receptacle. However, it does not relate to Non-Invention Corporation's
sound reproduction system itself, and it is fundamentally unrelated to this, and Non-provocation
8A seeks to improve the general frequency response of a stump handset. Therefore, the present
invention can be applied not only to the monaural system but also to transmission systems
having a plurality of other various channels, and can also be applied to the quasi-stereo system,
12 and the quasi-reference channel system. The present invention relates to a headphone (戟 am
receiver) in which the transducer constituting the entire sound range is composed of at least one
bass system and one treble system. Electric EndPage: Divided into parts: It relates to a headphone
in which the boundary between the high-tone area and the low-pitch area 1 can be easily set by
acoustic means without providing any means. The transducer has a relatively low acoustic
resistance, so if it is intended to realize a two-band system by means known in the prior art, it
will require expensive separation network tubes, and the space to carry it further On the other
hand, the present invention does not require such a conventional separation network-it is
conventionally used for small speakers in order to realize a handset with a loud treble system-
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Low to For sound transducers, one using company paper i-n is used.-In order to incorporate such
a small speaker into a headphone, it is relatively large between the diaphragm and the sound
outlet due to its construction. Require a connected space. Such a space-containing company is
also required for high-tone diaphragms, but the high-frequency system has a high frequency of
use, so the required coupling space is extremely small and mourning. The problem mentioned
above, ie old? It is an object of the present invention to solve the problem that a two-band system
is to be realized by using known speakers, and that a headphone (hand-held handset) is too large
to be used. In the present invention, at least two bass transducers and at least one bass system
transducer in each earpiece provided with at least two electrokinetic transducers or in a
headphone (戟 III WM receiver) embedded in a foam material An acoustic filter or band-pass
filter, which has two high-pitched sound system converters, is made as one-piece construction of
these two-rooms, and a cavity resonator is arranged in front of the bass system diaphragm, and
cut off It is characterized in that the frequency is in the middle of the transmission band of the
treble system and the bass system, and the sound transmission port of the filter is provided in
the immediate vicinity of the treble sound transmission port.
According to the present invention, an acoustic filter or an optical band filter that is disposed in
front of a bass-type diaphragm can be operated to act only in a low frequency region. 0 In the
present invention, a front of the bass-type diaphragm The cavity resonator can be arranged
simply by acoustic means, and its acoustic transmission opening can be arranged near the
acoustic transmission opening of the treble system. A plurality of sound transmitting openings
can be provided in each system. 〇 In the structure of the present invention and in the preferred
embodiment of the present invention (in the preferred embodiment, Korean, bass vibration ~ in
the hollow chamber forming the resonant cavity in front of the plate An integral transducer
having a concentric structure in which a treble type device is disposed in one core is formed, an
acoustic transmission opening is disposed around the treble type device, and one and two
acoustic openings are disposed on the same plane. In the present invention, the cavity resonance
of the front of the diaphragm for company bass. The acoustic outlet of the vessel is formed as an
annular lift that surrounds the treble system, the west face of which is the outer surface of the
treble system, and the height thereof is approximately the same as the height of the treble
system. According to the present invention, although the device of the bass system is additionally
provided, the coupling chamber for transmitting the high frequency from the high frequency
diaphragm to the ear 1 / hole can be made smaller. The cavity resonator can be of very simple
acoustic structure and easy to be dimensioned to obtain the desired filtering effect 0 Desired
frequency up to about 1j00 Hm The hollow chamber on one side has a depth of, for example,
about X-, and a sound 1 opening of about 3 ° in diameter is provided near the high-tone
diaphragm. It is also possible to use a large number of openings in the same manner as the area
of the acoustic opening company, or even if it is formed in the form of a single slit-0 these
openings or slits are a page of a high-tone diaphragm. It is particularly advantageous to arrange
close to one another. The acoustic mass (mass) of the air in the acoustic opening that houses the
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bass system prevents the sound generated from the treble diaphragm from intruding into the
hollow chamber of the cavity resonator, so the treble vibration is generated. The connection
hollow between the plate and the auditory organ, because one chamber can be made smaller ◎
The invention will now be described with reference to the drawings. 1a and 1b show a twosystem electrokinetic converter with a bass system I and a treble system-arranged adjacent to
one another. The sound outlet J of the bass system and the sound outlet of the treble system 参.
And placed close to each other. A resonant cavity is formed by the hollow chamber 4 and the
opening of the zero sound outlet J which arranges the hollow chamber 6 on the front surface of
the bass diaphragm S, and the resonance frequency defines the dividing point of the frequency
band of the converter. EndPage: 2 · which may be provided with an open lower for sound on the
back of the bass system 1 closes the back of the treble system 2.
Figures 21 and 2b are even more practical! The structure of the body showing the embodiment
can be made small, and the appearance becomes a single capsule shape, which facilitates the
assembly. The transformation of the example shown in FIGS. 3b shown in Fig. 3b The difference
between the two is that the treble system-is surrounded by the former in the example of the
former case to provide an annular passage or slit t, and this part is a cavity resonance. It acts as a
part of the acoustic mass of the vessel and produces a dull damping effect. The position is held
by a lip whose illustration of the treble system Jli of this example is omitted. If necessary, the
opening 3 of the acoustic outlet of FIGS. 1a, / b and Ja, Jb is filled with a damping material such
as a fiber, impregnated plate or the like to perform desired filtering without raising the resonance
point. be able to. FIG. 21 shows an earpiece of a basic invention bed horn incorporating a twosystem electrodynamic converter having a treble system and a bass system as shown in FIGS. In
FIG. 3A, a plate 10 made of synthetic resin, rubber or the like is placed in a bowl-shaped outer
shell 9. A converter capsule containing a bass l system and a treble system-is disposed in a caselike shape having a plate lO general wall portion //. A ring 12 is put on the periphery of the outer
collar 9 and a cushion 12 is attached. The sound produced on the back side of the bass
diaphragm is transmitted through the open lock into the outer shell 9 filled with the damping
material / J. The outer shell 9 is provided with an opening l # which conducts to the outside. In
addition, connect @ / 1 by socket) / 3. FIG. 3 shows an apparatus made of a foam material
containing a two-system converter called an open handset. A device according to the invention as
shown in FIG. , Which is provided with an acoustic aperture II. A cushion lq of foam material is
provided on the outside of the housing 17. A guide post X for movably holding the head spring 1
is provided on the back side of the housing 17. The voice drive coils for the bass system 'b and
the treble system are connected in parallel or in series f / c. An electric switch or control device
can be added to these voice drive coils to change the volume of one company with one frequency
characteristic, etc. ・ This technology F! The details of the explanation will be omitted as it is
known by the dealer. 第 Figure 1 shows the size of the high-tone system diaphragm X is not
limited to the size of the low-tone system diaphragm. A part of the hollow chamber 1 on the front
of the diaphragm makes the slit r), which affects the e-acoustic emission from the bass system-on
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the front of the 0 treble diaphragm-is open so as to surround the acoustic outlet of the bass
system A protective cap U provided with n is provided.
The transformation II according to the invention is particularly advantageous if it has a ringshaped pad as a cushioning cushion for the ear. In this case it is advantageous to surround the
acoustic transducer with a foam cushion and in principle operate as an open handset b
BRIEF DESCRIPTION OF THE DRAWINGS Fig. 11 / a, Fig. 1bJ7 is a longitudinal sectional view
and a plan view of an adjacent arrangement one-system converter according to the present
invention, Fig. Ha, Fig. 2b is a longitudinal section of a concentric arrangement J-system
converter according to the present invention. A plane If and a plan view, FIG. Ja, FIG. 311 is a
corresponding view showing a modification of FIG. Ja, Jb, FIG. FIG. 6 is a cross sectional view
showing the present invention receiver accommodated in the jla sound source material, and FIG.
6 is a cross sectional view showing still another example of the present invention converter. l · · · ·
· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · sound outlet, z, s · · ·
diaphragm, 4 · · · hollow chamber,? , #, / I, 2? · · I opening, l · · · 1 slot! ... Oval, 10 ... slope, / 1 ...
wall [, / 21 /? · · · · · · · · · · · · · · · · · Damping material% / S · · · · · · · · · 'connection line, n · · · housing,
X · · · guide guide, l · · · · head spring, 〃 ... Protective cap. EndPage: 36, catalog of attached
documents (1) 1 specification-(2) 1 drawing + 81 application 1 copy (4) proxy letter 1 (original
and translated text) '(5) f proof of prior right! 1) 1 (original text and translated text) 7 Inventors
other than the above, patent applicants or agents (菫) invention 1 (2) agent residence Chiyodaku, Tokyo Chiyoda-ku, Tokyo Building 7F Telephone (581) 2241 (Representative) EndPage: 4
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