JPS607876B2 - Base material of speaker vibrating part holding member and manufacturing method thereof - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a speaker vibration part holding member such as a damper or an edge member of a speaker, and a method for manufacturing the same.

Conventional corrugation dampers, for example, are generally made of plain-woven (warp and weft yarns woven at right angles to each other) cotton cloth (Figure 1) as a base material, which is uniformly impregnated with thermosetting resin such as phenolic resin. After this drying, 200 ~
It was formed by pressure molding and pressing using a 25 mm high temperature mold (Figure 2).

However, products using this plain weave as a base material,
Due to the material structure, the diagonal direction is weaker than the warp and weft directions, and as a result, the hardness differs depending on the circumference, leading to uneven stiffness, deterioration of linearity, and abnormal vibrations. It was easy.

The present invention focuses on these points, and provides a speaker vibrating section in which the base material is formed into a mesh having diamond-shaped meshes, and the diamond-shaped meshes are aligned in the radial direction, thereby solving the above-mentioned problems. The present invention aims to provide a base material for a holding member and a method for manufacturing the same.

Hereinafter, an embodiment will be described with reference to the drawings. FIG. 3 shows a surface view of Motomura, and the mesh is rhombic.

Fig. 4 is a detailed view of Fig. 3, in which staggered slits or punched parts are formed in the sheet member and expanded, and Fig. 5 is another detailed view of Fig. 3, in which the filament is expanded. They are joined together in a fixed direction, and staggered slits are cut in the joined parts to widen them. In the case of the one shown in FIG. 5, the filaments may be aligned and bonded at staggered positions, or the filaments may be welded and then spread out. The above figures 30 to 5 show a method for manufacturing a rhombic mesh member, which is further processed and used as a direct base material for an edge or a damper. That is, for example, if there is a slit in a sheet-like member,
In the case where punchings are placed in a staggered pattern and expanded (Fig. 45), the sheet-like part is formed in advance into a cylindrical shape, and there are slits in a vertical direction on the circumferential surface, When expanded, the result is as shown in FIG. 6. For example, the lower end is fixed and the upper end is opened outward to form a crow shape as shown in FIG. FIG. 7 shows an example of a damper base material in which the rhomboids are aligned in the radial direction. Furthermore, a filament using a filament (FIG. 5) can be made into a cylindrical shape and similarly expanded to form a fan-flat shape.

As described above, the flat donut shape has a uniform material composition in the radial direction and the same in the circumferential direction, so it is impregnated with thermosetting resin etc. When treated and used as a damper or edge member, the skiffness is made uniform at each point in the circumferential direction, the hardness is made uniform in the radial direction, and the vibration mode becomes linear to reduce distortion. You will be able to do this.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a plain woven fabric, Fig. 2 is a plan view of a damper base material using a plain woven fabric, Fig. 3 is a plan view of the base material mesh according to this embodiment, and Fig. 4 is a sheet-like member. Fig. 5 is an enlarged plan view of the base material network expanded by connecting filaments in a staggered manner, and Fig. 6 is an enlarged plan view of the base material network expanded by inserting staggered slits into the cylindrical sheet. An expanded perspective view of the
FIG. 7 is a plan view of the damper base material with one end of the cylindrical member shown in FIG. 6 expanded. Grave! Back Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7

Claims (1)

[Scope of Claims] 1. A base material for a speaker vibrating part holding member, characterized in that it is made of a doughnut-shaped flat mesh material, the mesh has rhombic mesh, and the rhombic mesh is aligned in the radial direction. 2. Form slits or punched portions in a staggered manner in the longitudinal direction of the cylindrical sheet member, and then expand one end of the cylindrical sheet member so that the entire cylindrical sheet member has a radial rhombic mesh shape in the shape of a flat donut. A method for manufacturing a base material for a speaker vibration part holding member. 3. A base for a speaker vibrating part holding member in which a plurality of filaments are joined in a staggered manner to form a cylindrical member, and one end of the cylindrical member is then expanded to form a radial rhombic mesh shape in the form of a flat donut as a whole. The manufacturing method of the material.