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Patent Office Secretary 1 Patent Specification 1, Name of Invention
Manufacturing method of diaphragm for speaker
, 3. Detailed description of the invention, the present invention is a speaker in which the edge
portion of the formed diaphragm is polished to a grindstone, thereby changing the thickness
freely and adjusting the contrast and the compliance of the diaphragm. The present invention
relates to a method of manufacturing a diaphragm for a disk. As a conventional method of
adjusting the contrast and sound of the speaker diaphragm in the related art, the corrugation of
the edge 1. The adjustment by John b is a lot, but there is a limit to the width, height, number,
etc. of the col, gauge, n, and so on. Another method is to use a different material from the
diaphragm. There is a free edge type 27: -1, which constitutes a di-part, but this must be
manufactured separately from the diaphragm and the edge, and this must be laminated, which is
disadvantageous in terms of productivity and productivity. As well as temperature and 1Ill! The
coefficient of expansion or contraction is different, and it has the disadvantage of becoming
extremely unstable in terms of characteristics. From these things, it is desirable to form a cone
part and an edge part from the molded one-piece. In order to satisfy this demand, there is a
method of changing the thickness of the edge. °。 As a method of changing the thickness of the
edge portion, there is a method in which only the edge portion is made thin at the time of paper
making (by this method, uneven unevenness and conversion are produced as shown in FIGS. 1
and 2) The variation in compliance becomes extremely large. Moreover, once made, the
adjustment of compliance is completely unworkable. なお1. In FIG. 1 and FIG. 2, -1) shows a
diaphragm, (2) shows a cone part, (3) a company factory cage part, and (4) a thin portion. The
present invention eliminates the above-mentioned conventional drawbacks, too EndPage: 15 t ·!
Is. Hereinafter, the method for producing the speaker diaphragm of the present invention will be
described and described. -With the recent development of polishing machines, it is possible to
adjust the feed of the grinding wheel to 1A00 to 1 / + ooo−-Oni, the present invention was
formed using this polishing apparatus. It is intended to adjust the processing of the diaphragm,
polishing of the di-degree, °, Kong Feian, and ス. FIG. 3 shows an embodiment thereof. A
diaphragm base material (5) made of a nine-disc raw material or a synthetic resin film formed by
papermaking of fibers by a general paper making method on a processing table (7) equipped
with a vacuum # (6) Fix the outer periphery of this with the presser ring (8). And 1, grinding the
edge part (9) of this diaphragm raw material (5) with a grinding stone α, this work, elastic
material such as rubber on the processing table (7) corresponding to the di part (9) Is implanted.
Further, the grinding wheel head is connected to the electric motor 04 by the transmission
device / structure Q3 via the feed structure @. In such an apparatus, the grindstone is rotated to
polish the edge portion (9) of the diaphragm raw material (5). At the time of polishing, if there is
a solid on the lower surface of the edge portion (9) of the diaphragm raw material (5), there is a
risk that only the location of the foreign matter will be damaged. (7) K is included. This polishing
is related to the particle size and rotational speed of the grinding stone as shown in the following
table. D indicates something that can be broken. As described above, according to the method of
the present invention for manufacturing a speaker diaphragm of the present invention, since the
machined portion of the formed diaphragm raw material is ground with a grindstone, the
thickness of the machined portion is compliant. You can make adjustments. And also its accuracy
V100 ~? Since the adjustment can be made up to / 1000-, the compliance of the edge can be
adjusted very accurately, the occurrence of paper dust and the like can be completely eliminated,
and the quality can be remarkably excellent. If you change the compliance on the way, you can
do it more easily than polishing IR K IIK, and its polishing can be done in as little as 1 or 2
seconds, which is also extremely advantageous in terms of the birthrate. . Thus, it has various
advantages and is of great industrial value.
4. Brief description of the drawings Fig. 1 is a top view of the speaker diaphragm obtained by the
conventional wisdom method, and Fig. 3 is a manufacturing apparatus in the method of
manufacturing the speaker diaphragm of the present invention. It is a sectional view showing an
example. (5).... Name of agent Attorney Nakao Toshio et al. 1 person EndPage: 2 2nd ll 11 13 m
16 Other agent pa 2 End Page: 3
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