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 JPH01309499 [0001] BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a diaphragm for a speaker having a display with good appearance and durability. [Prior Art] Conventionally, a company mark on a diaphragm or dust cap on the front of a speaker, a product name indication, etc., are heated in a symbol pattern by heating a foil provided with a metal layer as described in, for example, There is a method in which the metal layer is transferred to the surface of a diaphragm or the like by pressure to be pressure bonded, or a method in which a seal is attached. [Problems to be Solved] The conventional display means having such a structure is poor in the durability, and has the disadvantage that the workability is not good such as requiring extra man-hours for the display. . An object of the present invention is to solve the problems of the above-mentioned conventional example by integrally molding a display portion made of metal in a diaphragm made of a thermosetting resin. [Means for Solving the Problems] The speaker diaphragm according to the present invention for achieving the above-described object will be described with reference to FIGS. In the speaker diaphragm in which the thermosetting resin is cured by using a mold resin and curing the thermosetting resin by molding under pressure, the display mark 2 obtained by processing a thin metal plate or metal foil by etching or the like is formed The display mark 2 is placed on the surface of the substrate 1 of the diaphragm by placing it on the surface of the prepreg 3 to be the diaphragm substrate 1 later and integrally heating and pressing it with the mold 4.4 ′. A speaker diaphragm characterized in that it is fixed. [In the case of a diaphragm with a configuration like an eyelid and a hammer, the indication mark is integrally formed with the diaphragm substrate, so that the workability is good and the manufacturing cost can be reduced, and the indication mark is made of metal. Therefore, it has excellent wear resistance and corrosion resistance. [Embodiments] The embodiments of the present invention will be described in detail with reference to FIGS. 1 to 3. FIG. 1-- is the front of the diaphragm of the present invention, and 1-- is a base material constituting the diaphragm 11-05-2019 1 main body A filler obtained by impregnating or applying a thermosetting resin to a filler made of fibers or the like is temporarily made into a prepreg, which is heated and pressed to cure and form. In the same figure, 2 is a display mark. Fig. 2 shows an example of the indication mark, which is formed integrally by etching a thin metal plate or foil of brass, stainless steel or the like (for example, in the case where the indication mark or a plurality of characters are included, it becomes a series). It is FIG. 3 shows a process of forming the diaphragm, in which the uncured prepreg 3 of the base material and the display mark 2 are overlapped and integrally pressed and heated by the mold 4 and 4 ', The display mark 2 is pressed by the prepreg 3 (= 1), and when the thermosetting resin of the prepreg 3 is cured by heating, the display mark 2 is fixed to the surface of the diaphragm by the adhesive force of the thermosetting resin. In the above-described embodiment, etching is exemplified as the means for producing the indication mark 2, and in addition to this, it can not be used as the indication mark of the present invention even by punching using a press. As mentioned above, although the speaker diaphragm according to the present invention has been described in detail on the basis of the embodiment considered to be representative, the embodiment of the diaphragm according to the present invention is not limited to the structure of the above embodiment. As long as it has the constituent features described in the claims of the present invention, exhibits the effects of the present invention, and has the effects described below, the present invention is appropriately modified and implemented. [Effects] The speaker diaphragm according to the present invention has a very good appearance because the boundary between the displayed characters and the like and the surrounding diaphragm substrate is sharp and does not disappear due to friction etc. In addition, it is characterized by being easy to manufacture. [0002] Brief description of the drawings [0003] 1 is an external view of the diaphragm of the present invention, FIG. 2 is a front view of an example of display marks used for the diaphragm of the present invention, and FIG. 3 is a crosssectional view showing a molding state. 1 is a diaphragm substrate, 2 is a display mark, 3 is a prepreg, 4 and 4 'are molds for molding, and 5 and 5' are heaters. Patent applicant Onkyo Co., Ltd. 11-05-2019 2 11-05-2019 3
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