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JPS5450535

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DESCRIPTION JPS5450535
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a
conventional horn, FIG. 2 is a plan view of another conventional horn, and FIG. 3 is an exploded
perspective view of the horn according to this embodiment. It is. 2 и и и и и и и и Opening side horn 2a
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и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и- High part.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the improvement
of a horn attached to the end of a speaker. Most of the sectional horns have fins inside to
improve directivity by the function of the fins, but since the attachment of this fin is generally
deep position near the throat, the attachment is It's not easy. 1) For example, as shown in FIG. 1,
a method of welding the horns in which the fins 1 are previously formed and divided
symmetrically in the width direction, or secondly, separately forming the fins In the third place,
in the case of a wooden horn, as shown in FIG. 2, grooves are made in the horn and the lower
inner wall, and a fin 1 'is planted in one of them, from above There is a method of assembling
with the other side covered. However, in the first method, the accuracy of the welding is poor, so
the external electrical finishing is bad, and in the second method, not only the worker 6 is rough
41, but also the fins can not be used other than metal because of the heat resistance problem. It
is very fanatic to sew up the slope with a large number of extra fins (in the 3rd method), and it is
not possible to do enough internal finishing with the fin 1) The Therefore, in the present
invention (in the case where the horn is divided into two in the longitudinal direction and the fins
are inserted into the opening side, it is an object to provide the horn which solves the abovementioned interpersonal point It is a thing. Hereinafter, in one embodiment with reference to [3],
2 is a secular wood melon! A7Jll horn, 3 is aluminum-made)) Throat part side horn, these two are
integrated by screwing S1 part 3a of throat part side horn 3 into Urauro part side horn 2 + c. .
Openings-The horn 2 has its upper and lower inner walls finished to a suitable curved surface by
lathe processing, and the thickness of the fins 4 is located there where the fins 4 are located. ,
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And the fin 4 and the step height 4a thereof fit into the Fi2a. Thus, after the fins 4 are fitted in
the grooves 21 of the opening-side horn 2 and the seat portion steel hos 73 are joined to the
openings 46-side horn 2, the fins 4 are attached to the inside. The horn is integrally configured.
In the work of inserting 1 (L: soot, fin 4 into horn a, realization and direct OH, 42 a, there is no
fear that the fin 4 may be rolled by 1 and its position is also positive It becomes a wolf, and the
first one is four really blue. In addition, at the time of four standings of the 40-part side horn 2,
since there are no fins 4; ffX, the inner finish is easy and uniform and beautiful finish can be
performed.
Furthermore, since the fins are held in a pinched manner by the ten-part horn and the throat part
horn, there is no risk of falling off later. Furthermore, since the fin 4 is not required to have a
particularly large degree of heat resistance or heat resistance, it is possible to select a material
with emphasis on acoustic characteristics and ease of fabrication. Furthermore, since the fins 4
can be C with an arbitrary length other than the heights 4 &, the a) can be inserted deep into the
fin on the throat side horn. Sex controls can also be light sensitive.
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