JP2000092591A - Edge for speaker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the stretch of a fiber in a long diameter at a part on a short diameter side at the time of molding, to reduce molded distortion and to eliminate wrinkles by performing connection to the peripheral edge of an elliptic or non-circular diaphragm, forming a cloth and forming it by inclining the weaving direction of the cloth to the long diameter direction of the diaphragm. SOLUTION: This edge 1 is composed of a roll-like mold part 1a, an adhesive part 1b formed on the inner side for connecting the diaphragm and the adhesive part 1c formed on the outer side of the roll-like mold part 1a for connecting a frame, a long diameter is 12 cm and a short diameter is 8 cm. The edge 1 is connected to the peripheral edge part of the elliptic diaphragm and the cloth of plain weave impregnated or coated with rubber or resin is heat press molded. The weaving direction of the cloth for constituting the edge 1 is inclined to the long diameter direction of the diaphragm connected to the edge 1 and the inclination angle matches an angle for making the long diameter/short diameter of the diaphragm positive.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a loudspeaker edge used for loudspeakers of various audio equipment.

[0002]

2. Description of the Related Art In recent years, in audio equipment such as televisions,
It is required that the speaker mounting area be as small as possible and the speaker diaphragm be as large as possible. For this purpose, a speaker having a non-circular diaphragm such as an elliptical shape or an elliptical shape is often used.

[0003] Further, as an edge to be connected to the peripheral portion of a diaphragm of a speaker, a roll-formed one obtained by impregnating or coating a plain woven cloth with rubber or resin and then hot pressing is generally used. Have been.

Conventionally, in forming an edge used for an elliptical or non-circular diaphragm as described above, the weaving direction of the cloth constituting the edge is not particularly considered, and the weaving direction of the cloth is determined by the diaphragm. Was made parallel to the major axis direction or minor axis direction.

[0005]

In the prior art described above, in the case of an edge used for a diaphragm having a large value of major axis / minor axis, the same direction as the yarn over a long distance in the roll forming section on the minor axis side during molding. Since large elongation is required, molding distortion is involved, and there is a problem that wrinkles occur.

The present invention has been made in order to solve the above-mentioned problems, and has as its object to provide a speaker edge suitable for an elliptical or non-circular diaphragm having a large major axis / minor axis value. .

[0007]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, an invention according to claim 1 is provided for a speaker formed by forming a cloth, which is connected to the periphery of an elliptical or non-circular diaphragm. An edge, wherein the weaving direction of the cloth is inclined with respect to the major axis direction of the diaphragm.

According to such a configuration, since the yarn does not elongate over a long distance in the portion on the minor diameter side during molding, molding distortion can be reduced.

The invention described in claim 2 is the first invention.
Wherein the inclination angle between the weaving direction of the cloth and the major axis direction of the diaphragm is equal to the angle at which the major axis / minor axis of the diaphragm is tangent.

In this case, molding distortion can be reduced more reliably.

[0011] The invention according to claim 3 is based on claim 1.
Alternatively, in the speaker edge according to claim 2, the cloth is made of satin weave.

In this case, the number of intersections between the warp and the weft constituting the fabric is relatively reduced, so that one of the yarns is liable to slip with respect to the other yarn, the binding force in the weave is weakened, and the formability is improved. In addition, molding distortion can be further reduced.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic plan view of a speaker edge according to an embodiment of the present invention, and FIG.
FIG. 3 is a graph showing the relationship between the load and the displacement at the edge according to the present embodiment, and FIG. 4 is a graph showing the relationship between the load and the displacement at the conventional edge.

The edge 1 shown in FIG. 1 is joined to the periphery of an elliptical diaphragm, and is formed by hot press molding a plain woven cloth impregnated or coated with rubber or resin. And a roll-shaped molded part 1a
And a sticking portion 1b formed on the inside thereof for bonding to the diaphragm, and a sticking portion 1c formed on the outside of the roll-shaped forming portion 1a for connecting to the frame. 12 cm and minor axis is 8 cm.

The weaving direction (the direction of the arrow in FIG. 1) of the cloth constituting the edge 1 is inclined with respect to the major axis direction of the diaphragm coupled to the edge 1, and the inclination angle is the major axis of the diaphragm / (the major axis of the diaphragm). The angle coincides with the tangent of the minor axis. In this case, since the yarn does not elongate over a long distance in the portion on the short diameter side during molding, molding distortion is reduced, and wrinkles hardly occur.

As shown in FIG. 3, in the edge 1 of the present embodiment, the applied load and the displacement caused by the applied load are almost linearly proportional, and compared with the conventional plain weave edge shown in FIG. It can be seen that it has been significantly improved.

[0017]

As described above, the loudspeaker edge according to the first aspect has a longer weave at the shorter diameter side during molding because the weaving direction of the cloth is inclined with respect to the longer diameter direction of the diaphragm. Since there is no elongation of the yarn at a distance, there is little molding distortion and almost no wrinkles.

Further, in the loudspeaker edge according to the second aspect, the inclination angle between the weaving direction of the cloth and the major axis direction of the diaphragm is equal to the angle of the tangent of the major axis / minor axis of the diaphragm, thereby forming distortion. Can be more reliably reduced.

In the speaker edge according to the third aspect, since the cloth constituting the edge is made of satin weave, the number of intersections between the warp and the weft constituting the cloth is relatively small, and one of the points of intersection during molding is formed. Since the yarn is slippery with respect to the other yarn, the formability is good and the molding distortion can be further reduced.

The edge for a speaker according to the present invention is, in particular,
It is suitable for an elliptical or non-circular diaphragm having a large major axis / minor axis value.

[Brief description of the drawings]

FIG. 1 is a schematic plan view of a speaker edge according to an embodiment of the present invention.

FIG. 2 is a detailed view of a portion A in FIG.

FIG. 3 is a graph showing a relationship between a load and a displacement at an edge according to the embodiment.

FIG. 4 is a graph showing the relationship between load and displacement at a conventional edge.

[Explanation of symbols]

 1 edge

Claims (3)

[Claims] 1. A loudspeaker edge which is formed by molding a cloth and which is joined to a peripheral portion of an elliptical or non-circular diaphragm, wherein the weave direction of the cloth is inclined with respect to the major axis direction of the diaphragm. An edge for a speaker, characterized in that: 2. The loudspeaker according to claim 1, wherein an inclination angle between a weaving direction of the cloth and a major axis direction of the diaphragm is equal to an angle of a tangent of a major axis / a minor axis of the diaphragm. Edge. 3. The speaker edge according to claim 1, wherein the cloth is made of satin weave.