Patent Translate Powered by EPO and Google Notice This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate, complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or financial decisions, should not be based on machine-translation output. DESCRIPTION JPS53156525 BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a speaker diaphragm according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of a vacuum suction bonding apparatus for manufacturing the speaker diaphragm of the present invention. FIG. 3 is a cross-sectional view of another embodiment of the present invention, and FIG. 4 is a frequency-causal characteristic diagram of a speaker using the speaker diaphragm of the present invention. 1 ············································································································ Mesh metal, 10 ········ Nylon film , 11 ... ... the end. DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dome-shaped, cone-shaped loudspeaker diaphragm. A feature of the present invention is that a thermoplastic '1 raw film is laminated on a cone or dome surface based on a woven fabric, non-woven fabric, meshy gold leaf and the outer peripheral portion of this thermoplastic film is used as an edge. It is in. As the error / material of the conventional O-speaker diaphragm, a cotton-based resin may be impregnated with a comb-based resin, or a material using urethane foam "-1 1"; is it in practical use or with an edge material? 9-12 does not exhibit sufficient characteristics. In addition, in the case of a cone paper diaphragm using a single papermaking machine or a conventional dome diaphragm, the cone surface material or the dome surface material and the edge material are the same, and at the present, they do not give a favorable effect in terms of acoustic characteristics. The cone or dome surface is very light and hard material (high elastic modulus) is the acoustic property (this is preferable, but the edge material is light, internal loss or large material is ideal to prevent the edge resonance region . However, in the present speaker diaphragms, since the cone surface or dome surface and the edge are made of the same material, an edge resonance occurs, which is not preferable in terms of acoustic characteristics, and a cone surface or dome surface as an edge material. When different materials are used, a large loss is usually caused in the material surface because the material in the central portion other than the annular edge is not necessary. The present invention is intended to eliminate the above- 10-05-2019 1 mentioned conventional drawbacks, and is a woven fabric composed of inorganic fibers, natural fibers or their mixed fibers which contributes to weight reduction of the speaker diaphragm and increase in internal loss elastic modulus. Or a) a thermoplastic film is laminated on a cone surface or a dome surface based on a woven fabric, and an outer peripheral portion of the thermoplastic film is used as an edge. The above-mentioned inorganic fiber refers to crow fiber, carphone fiber, alumina fiber, holon fiber, zirconia fiber, gypsum fiber, etc., and synthetic fiber means polyester fiber, nylon fiber, aromatic polyamide fiber, polypropylene fiber, vinyl chloride It says that it is fiber. In addition, natural fibers (, F4, cotton, hemp, wool and so on. "Mez / yu-shaped gold pot" refers to a mesh-like one consisting of iron and stainless steel. Further, the above-mentioned thermoplastic film is polyethylene, polypropylene, nylon or polycarbonate. In addition to polystyrene, polyvinyl fluoride, polyvinyl fluoride, polyvinylidene chloride, polyfluorinated vinylitene, polyester, polyacrylate and the like films, thermoplastic elastomers such as polyurethane elastomers and polyester elastomers are also included. Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 [Example 1] 2 · j 4-1-1 As shown in Fig. 1, a polyester non-woven fabric with surface density If 60,% / m is impregnated with an acrylic curable binder to a surface density of 80 n / l and a cone of 10 m in diameter Form face 1 with a heat-brace. A 50 μ polyurethane elastomer film 2 is laminated to the non-woven cone surface 1 by vacuum suction bonding, and at the same time the edge 3 is simultaneously formed. When using a polyurethane elastomer film with a comb-like elongation as in this example, it is more effective to reduce the edge width. FIG. 2 shows a cross section of an apparatus for carrying out the vacuum suction bonding method, and a mold 6 in which a cone-shaped recess 4 and a suction hole 5 are formed! A cone surface 1 made of this polyester non-woven fabric is placed, a polyurethane elastomer film 2 is disposed on the upper part of the mold 6, and the polyurethane elastomer film 2 is heated by a heater 7 since exhausting from the suction holes 5. It laminates on the cone side 1. In FIG. 2, (8) is a mold 6'7) [! It is a ring-shaped uneven portion formed on the outer peripheral portion of the J portion 4, and a portion corresponding to the above-mentioned uneven portion 8 of the film 5 made of polyurethane elastomer is an edge 3. [Example 2] As shown in FIG. 3, a stainless steel mesh metal of surface density # 70 G '/ ctN is pressed to a diameter of 35 mm. A dome surface 9 having a dome depth of B mm is formed, and a nylon film 10 having a thickness of 50 μm is laminated on the dome surface 9 as in the first embodiment, and the outer peripheral portion of the nylon film 1 o is an edge 11. . The speaker diaphragm according to the present invention has the abovedescribed configuration, and a plastic film is laminated on the cone surface or the dome surface, so the internal loss of the speaker water moving plate becomes large, and error / resonance is prevented. As shown in FIG. 4; this flat frequency characteristic can be obtained, as well as having a merit that the loss of material is reduced as compared with the one using the cyclic enone material as in the prior art. 10-05-2019 2
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