JPS645440Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an improvement of a support structure for a horn speaker.

[Prior Art] A conventional horn speaker support structure, for example, as shown in FIG. Structures that were fixed and supported using

Note that 4 in the figure is a driver unit.

In such a support structure for a horn speaker, the horn 1 and the driver unit 4 may be used in small-sized horn speakers for high-frequency reproduction, or small-sized horn speakers that have a relatively high cut-off frequency even in horn speakers for medium-frequency reproduction. However, for example, in a horn speaker that reproduces from a relatively low frequency band with a cutoff frequency of about 400 Hz, the weight of the horn 1 and driver unit 4 becomes large, so supporting the horn speaker only with the flange portion 1a is not suitable for the horn 1. This is not necessarily the optimal support structure considering the strength of the structure.

Further, conventionally, the horn 1 has mainly been made of light metal materials such as aluminum, but in recent years, attempts have been made to use reinforced synthetic resin materials such as FRP and CFRP, which are synthetic resins mixed with reinforcing fibers, as the horn material. A horn made of such a reinforced synthetic resin material has a larger internal loss than an aluminum horn, so it has the advantage of suppressing the sound caused by vibration of the horn, so-called horn squeal, and enabling more natural reproduction.

[Problems that the invention aims to solve] However, because the Young's modulus of reinforced resin materials is smaller than that of aluminum, etc., in small horns, the third
The support structure shown in the figure can be adopted, but for example, the horn length is 31 mm.
cm, aperture size 40cm x 28cm, cutoff frequency
The horn is made of FRP made of polyethylene and glass fiber and has a frequency of 400 Hz.The horn itself weighs approximately 8 kg, and the driver unit weighs 6 to 7 kg.
Therefore, it was impossible to support the horn speaker on the buttful surface only by the flange formed in the horn opening due to the strength of the flange.

[Means for Solving the Problems] This invention is a support structure for a horn speaker in which a horn opening is set as a free end by a person who supports a connecting portion between a horn of a speaker horn and a driver unit within a cabinet.

[Example] This invention will be described below with reference to an example.
In FIG. 2, 21 is a horn, and the driver unit 4 is coupled to a flange portion 21a formed at the throat of the horn. Reference numeral 22 designates a cabinet for housing the horn speaker, and reference numeral 23 designates a support plate having a hole 23a through which the driver unit 4 is inserted, and is fixed within the cabinet 22 using a corner bar 24 as required. The horn 21
Bolts 2 are attached to the flange portion 21a and the support plate 23.
A plurality of through-holes 5 are inserted, and the flange portion 21a of the horn 21 is fixed and supported by the support plate 23 by screwing nuts 26 onto the bolts 25 inserted into the through-holes.

On the other hand, the flange portion 21b of the horn 21 is formed as a free end so as not to come into direct contact with the buffed surface 22a.

[Effects of the invention] According to the configuration of this invention, since the connecting portion between the horn 21 and the driver unit 4 is fixed and supported by the support plate 23, the horn 21 is supported at the weight center position of the horn speaker. Since no force is applied to support the driver unit 4, it is possible to support a horn speaker using a horn made of a material with a lower Young's modulus than conventional materials such as FRP. Since the free end is set so as not to contact the buff-full plate, mutual transmission of vibrations between the horn and the buff-full surface can be blocked.

In the embodiment, a support structure for a horn speaker having a single cabinet housing the horn speaker has been described, but an appropriate support plate 23 may be placed in a common cabinet to which other speakers such as a bass speaker are attached. A similar effect can be obtained. Further, the coupling structure between the horn speaker and the support plate may be achieved by a mounting flange formed on the driver unit.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view of a conventional support structure, and Fig. 2 is a cross-sectional view of the support structure of this invention. 22: cabinet, 23: support plate, 21: horn, 4: driver unit.

Claims (1)

[Scope of utility model registration request] This support structure for a horn speaker is characterized in that a connecting part of a horn 21 of a horn speaker and a driver unit 4 is attached to a support plate 23 fixed in a cabinet 22, and the horn opening is set as a free end.