JP3052513B2 - Speaker device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a loudspeaker device in the acoustic field.

[0002]

2. Description of the Related Art In recent years, many proposals have been made for improving the bass range performance of a speaker device. Various efforts have also been made to reduce costs.

For example, when utilizing the resonance phenomenon of an acoustic system as represented by a phase inversion type speaker device, a cylindrical port is generally used, and the shape of the port is also shown in FIG. As described above, there is an example in which the discontinuity of the change in the internal cross-sectional area of the port is improved and the turbulence of the air at the opening end is prevented.

An example of the above-described conventional speaker device will be described below with reference to the drawings. FIG. 3 is a sectional view showing the structure of a conventional speaker device. In FIG.
31 is a port formed integrally, 33 is a speaker cabinet, 32 is a screw for fixing the port 31, 3
Reference numeral 4 denotes a speaker unit. In addition, the shape of both ends of the opening of the port 31 has the same curvature as the natural streamline of the air, thereby preventing turbulence of the air and reducing abnormal sound that is an obstacle to high fidelity reproduction. It is effective.

[0005]

However, such a conventional speaker device as described above is disadvantageous in terms of cost because a new mold is required when a new model with a different port length is manufactured. There was a problem that.

An object of the present invention is to solve the above-mentioned conventional problems, and to reduce the cost of a speaker device by using an opening flange made of the same mold in common with many speaker devices. And

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a speaker device according to the present invention comprises a tubular member 12, 22 of a port whose length can be easily selected, and a tubular member of the port. Attached to both ends of 12,22, inside cylindrical
And the outer cylindrical rib separated from the rib by a groove
Preparative the opening flange 11, 21 of the port with, and a key catcher bi <br/> net 15 and 25, the opening flange of the port
The inside cylindrical rib is inside the cylindrical part of the port
Joined to the outside of the material, and the outside of the cylindrical rib
Configured to join with vignette .

[0008]

According to the present invention, a cabinet,
In many speaker devices having different speaker units or the like, optimum low-frequency characteristics can be obtained by changing the lengths of the cylindrical members 12 and 22. That is, the opening flanges 11 and 21 that require an expensive mold can be shared.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a speaker device according to the present invention will be described below in detail with reference to FIGS.

FIGS. 1 and 2 show loudspeaker devices according to first and second embodiments of the present invention. The configuration example shown in FIG. 1 is generally called a bass reflex type (phase inversion type), and FIG. 2 is called a Kelton type. It is an example. 1 and 2, reference numerals 11 and 21 denote opening flanges made of a resin molded product or the like having a surface shape having the same curvature as a natural streamline of air, reference numerals 12 and 22 denote cylindrical members,
13 and 23 are adhesives, 14 and 24 are grooves for preventing the adhesive from flowing out, 15 and 25 are cabinets, and 16 and 26 are speaker units. The port uses two opening flanges 11 and 21 and is bonded to both ends of the cylindrical members 12 and 22 with adhesives 13 and 23 at inner cylindrical ribs 11a and 21a, respectively. The flanges 11 and 21 are fixed to the holes 15a and 25a provided in a part of the cabinets 15 and 25 with adhesives 13 and 23 by cylindrical ribs 11b and 21b on the outside thereof.

As described above, when a new model is manufactured as described in the present embodiment, the length of the cylindrical member 12 can be easily selected without requiring a new mold. 22
By using the opening flanges 11 and 21 that can be manufactured by the same mold in common with many speaker devices, the cost of the speaker device can be reduced.

Further, since the grooves 14 and 24 are provided at positions adjacent to the two joining portions between the inner and outer sides of the port opening flanges 11 and 21, it is possible to prevent the adhesives 13 and 23 from flowing out to the external surface. .

[0013]

As described above, the present invention comprises an opening flange which can be manufactured with the same mold in common with many speaker devices. It can be realized at relatively low cost, and the opening flange of the port has an inner cylindrical
And the outer cylindrical rib separated by a groove
So that the inner cylindrical rib has a port tube inside it
Outside of the cylindrical rib joined to the outside of the cylindrical member
To connect to the cabinet,
Outer dimensions and cabinet mounting port
The dimensional errors of the diameters do not affect each other, and the practical effect is large.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a bass reflex type speaker device according to an embodiment of the present invention.

FIG. 2 is a sectional view of a Kelton type speaker device according to another embodiment of the present invention.

FIG. 3 is a cross-sectional view of a conventional bass reflex type speaker device.

[Explanation of symbols]

 11 Opening Flange 12 Cylindrical Member 13 Adhesive 14 Groove for Preventing Outflow of Adhesive 15 Cabinet 16 Speaker Unit 21 Opening Flange 22 Cylindrical Member 23 Adhesive 24 Groove for Preventing Outflow of Adhesive 25 Cabinet 26 Speaker unit

Claims (3)

(57) [Claims] An inner cylindrical rib and the rib are separated by a groove.
Opening flange of a port having an outer cylindrical rib separated therefrom.
And a cylindrical member of the port, and a cabinet.
For example, inner tubular rib opening flange of the port is bonded to the outer tubular member of said ports at the inner side of the
A speaker device characterized by being joined to a cabinet outside an outer cylindrical rib . 2. The opening flange of the first port has an opening flange formed therein.
The tubular rib on the side is inside and outside the tubular member of the port
Bonded to the outside of the cylindrical ribs on the outside of the cabinet
And the opening flange of the second port has at least an inner cylinder
The speaker device according to claim 1 , wherein the inside of the rib is joined to the outside of the tubular member of the port . 3. A cylindrical ring inside an opening flange of a port.
2. The speaker device according to claim 1, wherein a groove is provided at a position adjacent to a joint with the tubular member outside the bush to prevent the adhesive from flowing out to the outer surface.