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JPS4878921

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DESCRIPTION JPS4878921
・ Sari 汐 Jan. 1972 V. Patent 7 Commissioner 特許 土 V V 1 1 1 バ ゾ 七 イ イ イ ・ ・ ・ 名称
名称, 名称 振動 ス ピ ー カ ス ピ ー カ ス ピ ー カ ス ピ ー カ ス ピ ー カ ス ピ ー カ ス ピ ー カ
ス ピ ー カ ス ピ ー カ 製造 製造 製造 製造 特許 特許Number of inventions listed in claims 3-430
in Hamamatsu City, Shizuoka Prefecture (town lO No. 1 Japan Musical Instruments
Manufacturing Co., Ltd. Patent Division (733 G) Patent Attorney Kamiya 'Maki Telephone' 0534>
6111t1 [Fa] Japan Patent Office Open Patent Publication ■ Japanese Patent Application LaidOpen No. 48-7892.1: Request for examination not yet filed (all two pages) Office internal serial
number; 0 Japanese classification: 〃:; / 2∼ 2-: Description 1, title of the invention 1, invention
Speaker's diaphragm and method of manufacturing the same
3, Special 1 r 1 applicant
3. Detailed Description of the Invention This invention is a speaker, and sometimes a diaphragm
used for a high standing speaker. する。 In general, various conditions necessary for a speaker,
ie, high performance, high transient characteristics, and low T-weight, large Young's modulus,
etc. are required to extend the high-pitched range. -. However, as shown in the table, in the case
of titanium Ti alloy in aluminum A1 alloy which has conventionally been used as a material for
diaphragms, Young's modulus E is small ((contrast density- I was not satisfied with it. AITi'Pe
Since the present invention has been made in view of the above-mentioned point, it is made of an
alloy mainly composed of beryllium Be as a material of a diaphragm of a speaker. That is, Be, as
apparent from the table, its Young's modulus E is Al? + Oel, 'mf) li, 30.8 compared to ilK and
Daikichi (, and the density p of AI is 2. of AI. The value of x, sa is very small as compared to 4.54
at -1 ° T1 (Thus, the Young's modulus E / 単 位 in unit weight is compared to that of human 1
(ji, 61), Ti (sl, 6 m) K as Be (1a, aS) is a sand with a much more favorable value, and the above
conditions are completely added with Kw. In addition, as the brazing alloy, for example, Be-σU
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gold alloy Ou-0, B, B, O @, 1) -1, 89 to 2, 5 ° CX 0 ′ ′ kg / ml: 1 EndPage: 1E-30, (1- 5R, O
[XIO "N 7m"))-Ba-A1 alloy (Al-40-40,-1 card OII-2.19 [xxo 1 kg / m "), E-me, 0, 30.0 CXl 01 ON /
D]) etc. 1! fI−れげよりり。 Next, the manufacturing method of the diaphragm according to
the present invention will be described. Although Be can be generally formed into a thin plate
having a thickness of about 30 Am (My # 4 meter) of 11 degrees by warm rolling, a thin film for
making this thin plate into a diaphragm of a desired shape. And Wb processing is very difficult at
present. Therefore, first, the vapor phase growth method is used as a first manufacturing method.
That is, the eleventh! As shown in IK, for example, in the growth reaction Ifl made of quartz or
the like, a substrate formed corresponding to the shape of the diaphragm is held, and this
substrate 8 is a high-shoulder wave coil or a heater of an ordinary electric resistance crucible. It
is heated to 900-1400 ° C. by heating body 3, and there is an inert gas of Be, eg, 13eO 1m, as
carrier gas 2 as necessary, such as Ar 11 $ 4 And heat the vapor phase reaction using the heated
substrate 3 as a heat source to deposit and grow KBe crystal on the base #RR, and then separate
the thin plate of precipitated and grown Be crystal from the substrate 2 Get self-made with a
chest formed diaphragm.
In this case, it is effective to use AlfiOl or the like which is safe even at high temperature as the
material of the substrate g, and apply a suitable release agent ★ to the surface of the group [1a
as necessary. In addition, a vacuum evaporation method is used as a manufacturing method t of
the hall 3. That is, Be or 3m alloy is evaporated with molten metal or multiple vacuum
evaporation in vacuum (10 → 1 et 4 wnHg 8 degrees), and 9 is attached to the substrate surface
formed in the same shape as the diaphragm to be produced After that, the thin plate of Be or Be
alloy deposited is separated from the substrate, and the diaphragm having a single-shaped shape
is shaken. Also in this case, as in the case of the vapor phase growth method, if a thermally stable
material such as Al, O, etc. is used in vacuum as the material of the substrate, and a mold release
agent is applied on the substrate surface Effective As described above, since the diaphragm of the
present invention, the speaker of this invention is formed of Be alloy by Be alloy, as shown in the
* S diagram, the efficiency is good and the plane is flat up to the high 1 area It's snowing to get
good speakers.
4. Brief description of the drawings. FIG. 1 is a main part of an apparatus showing a method of
manufacturing a diaphragm according to the present invention. FIG. 1 is a schematic view of a
device having # 1I1. Oh in the characteristic chart which shows the frequency time characteristic
of the speaker which has a diaphragm, respectively. 1 → → For the skin & (Hz) 5, list of attached
documents (1) 1 description (2) 1 drawing (3) proxy 1 (4) request (second copy) 1 EndPage: 2
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