JPS5514344

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DESCRIPTION JPS5514344
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially omitted longitudinal sectional view
of a first embodiment of the horn speaker according to the present invention, FIG. 2 is a partially
omitted plan view, and FIG. 3 is a second embodiment FIG. 4 is a partially omitted transverse
cross-sectional view of the fitting portion of the outer cylinder and the throat according to the
third embodiment. 2 ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии Unit cover, 18
...... in cylinder 24 ...... outer cylinder, 26 ...... short cylindrical portion, 28 ...... strip, 30 ..... иscrew.
DETAILED DESCRIPTION OF THE INVENTION This invention x-speaks to a horn speaker. The
inventor of this invention previously proposed the following horn speaker. That is, the drive unit
is supported on the rear side of the throat device having a throat portion '11 on the front side) 1)
The driver is mounted on the front side of the throat device and the inward is attached to the
throat device. The inner surface is arranged, the outward direction is arranged to cover the throat
tool, the inner cylinder and the inner cylinder, the unit cover is arranged on the rear side of the
outer cylinder, and they are all screwed together by one set of screws It is a thing. However,
when assembling such a speaker, it is necessary to position the throat, the middle cylinder and
the unit cover on the inside and the outside of the outside quotient, and then screw-connect,
resulting in poor working efficiency. It is an object of the present invention to provide a horn
speaker having improved working efficiency by being configured such that attachment of the
throat tool to the outer cylinder can be performed outside the outer cylinder. Hereinafter, the
present invention will be described based on the illustrated three embodiments. FIG. 1 shows a
first embodiment. In the figure, 2 is a throat tool and has a throat N4 on the front surface
thereof, and an inner cylinder 6 is fitted to the middle fire of this throat city 4. A flange 8 is
formed on the peripheral edge of the throat tool 4 and a locking portion 1o is formed on the
outer 7 ilil edge of the flange 8 '. (2) 7 mm 'The drive unit 12 comprising a diaphragm and a
magnetic circuit is supported on the rear side of the throat tool 2. A bowl-shaped unit cover 14 is
disposed to cover the drive unit 12. A flange or flange 16 is formed on the peripheral edge of the
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opening and is in surface contact with the rear surface of the flange 8 of the throat tool 4. The
reference numeral 18 denotes a middle cylinder arranged to cover the inner cylinder 6, the
diameter of which is formed IJ \ as it goes from the rear opening 19 toward the tip, and the inner
circumferential surface 11 It has extended legs 20t-3 so as to reach the front surface of the 1
reslot tool 4. A screw 22 penetrating the flange 16 of the unit cover 14 and the flange 8 of the
throat tool 2 is connected to these leg portions 20, and the unit cover 14, the throw 1-tool 2 and
the human middle cylinder 18 The integrally connected bar 24 is an external quotient, and is
disposed so as to temporarily hold the middle cylinder 18, and its step end opening is formed
with a short cylindrical portion 26 extending further rearward. The flange 8 of the throat tool 2
is fitted into the 1 cylindrical portion 26 to be 'I', and the locking portion 10 of the flange 8 has a
short cylindrical portion 26 (3) to a rear end of It is set up.
The inside diameter of the short cylindrical portion 26 is formed somewhat larger than the
outside diameter of the rear end opening 19 of the middle cylinder 18. A folded sound path is
formed by the outer quotient 24, the front surface of the throat tool 2 and the middle cylinder
18. On the 2nd, it is a band-shaped body, and it is made of aluminum quiy cast on a ring which is
partially removed, and is arranged on the outer peripheral surface of the short cylindrical portion
26 so as to surround it. The reference numeral 80 denotes a screw, and as shown in FIG. 2, the
portion of the strip 28 is tightened so that the short cylindrical portion 26 and the throat tool 2
are stored. Nine legs (not shown) are attached to the strap 28 to attach the horn speaker to a
support. This horn speaker can be assembled as follows. The inner cylinder 6 is attached to the
front of the throat tool 2, the drive unit 12 is mounted on the rear side of the throat tool 2, and
the unit cover 14, the throat tool 2 and the middle cylinder 18 are coupled by screws 22. Then,
the combined product is disposed so that the short cylindrical portion 26 is positioned on the
upper side, and is inserted into the outer cylinder 24 from the upper part thereof, and the band 2
day is (4) 1; It is good to combine. At this time, since the locking portion 10 of the flange 8 of the
throat tool 2 is supported by coming into contact with the short cylindrical portion 26, the band
26 can be easily tightened. A second embodiment is shown in FIG. In the second embodiment,
instead of providing an engagement upper portion on the flange 8 of the throat tool 2, the flange
16 of the unit cover 14 is provided with a hook 32. That is, the flange 8.16 of each of the throat
tool 2 and the unit cover 14 is fitted in the short cylindrical portion 26 and abuts the rear end of
the short cylindrical portion 26 in the locking portion 32 of the flange 16. There is. The other
parts are configured in the same manner as in the first embodiment, so the same reference
numerals are given to the same parts and the description thereof is omitted. The assembly is also
performed in the same manner as in the first embodiment. , 3rd implementation -1 is shown in
FIG. In the third embodiment, the inner circumferential surface 35 of the strip 28 is alternately
provided with asperities, and the outer peripheral surface 37 of the flange 8 of the throat tool 2
is provided with asperity in a complementary manner. The other parts are configured in the same
manner as in the first embodiment, so the same parts are given the same reference signs and the
explanation thereof is omitted. Even when assembled (5)-), the process is the same as the first
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embodiment. With such a configuration, even when the inner diameter of the short cylindrical
portion 26 is larger than a predetermined size, the dimensional error can be absorbed, which
also serves as a chatter. и With these horn speakers, the throat device provided with the middle
cylinder 18, the inner cylinder 6, the drive unit 12 and the unit cover 14 by fastening the throat
device 2 or the unit cover 14 and the short cylindrical portion 26 by the band 28 & C. 2 is
attached to the outer cylinder 24.
Therefore, since the assembly operation of the throat member 2 and the outer cylinder 24 can be
performed only on the outside of the external quotient 24, the operation efficiency is improved.
Although the middle cylinder 18 is shown separately from the inner cylinder 6 in the above three
embodiments -4, it may be integrally formed with the inner cylinder 6. Also, although the band
26 has been formed into an integral ring, it is hinged between one end of each of two
semicircular arc-shaped ones formed of a flammable material, and between the other ends It may
be a screw connection or a screw connection between both ends. In the case of the second
embodiment, it is not necessary that the flange 8 of the screw (6) 1- и ^) / multi-rot tool 2 be in
contact with the short cylindrical portion 26 and the diameter of the flange 8 is a unit cover The
diameter of the flange 16 may be smaller than the diameter of the flange 16. In the case of the
third embodiment, each of the strip 28 and the flange 8 is provided with asperities, but either
one may be sufficient. Further, although the flange 8 of the throat tool 2 is provided with
irregularities, the flange 16 of the unit cover 14 is provided with irregularities when the unit
cover 14 is fitted to the short cylindrical M26 as in the second embodiment. Just do it.
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