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1. 发明专利

JPS59148498A Manufacture of diaphragm for speaker 失效
标题翻译：制造用于扬声器的透镜
公开(公告)号：JPS59148498A
公开(公告)日：1984-08-25
申请号：JP2323283
申请日：1983-02-14
申请人： Matsushita Electric Ind Co Ltd
发明人： TAKEDA KOUJI , TAKEUCHI HIROSHI
IPC分类号： H04R7/02 , H04R31/00
CPC分类号： H04R7/02
摘要： PURPOSE:To obtain a diaphragm for speaker without anisotropy for rigidity by flowing a solution melting a resin including a needle filler or fiber from the origin of a mold of cone shape along its generating line and solidifying it by cooling or the like so as to form the diaphragm. CONSTITUTION:The needle filler or fiber included in a solution melting or dissolving the resin are oriented lengthwise along the flowing direction of the solution. In flowing this solution uniformly in the direction of outer circumference along the generating line from the origin of the cone shape, the lengthwise direction of the needle fillers or fibers included in the solution along the generating line from the origin to the outer circumference is oriented. The needle fillers or fibers are oriented uniformly in the direction of the generating lines from the vertex of the diaphragm obtained by evaporating the solvent or cooling the solution so as to solidify it, and the diaphragm is reinforced without any anisotropy, allowing to suppress abnormal amplitude. Concretely, a polyallylate resin is used, a 20wt% of carbon fibers is kneaded therewith the mixture is heated to 320 deg.C, and the solution kneaded well is floned from the origin of the cone shaped mold kept at 100 deg.C.
摘要翻译：目的：通过将包含针状填料或纤维的树脂从锥形模具的原点沿着其生成线流动而使其熔融的溶液通过冷却等固化而获得用于刚性各向异性的扬声器隔膜，并使其固化隔膜。构成：熔化或溶解树脂的溶液中包含的针状填料或纤维沿着溶液的流动方向纵向取向。在从锥形的原点沿着生成线沿外周方向均匀地流动该溶液时，从原点到外周沿生成线将包含在溶液中的针填料或纤维的长度方向定向。针状填料或纤维从通过蒸发溶剂或冷却溶液获得的隔膜的顶点从发生线的方向均匀地取向，使其固化，并且隔膜被加强而没有任何各向异性，允许抑制异常振幅。具体地说，使用聚烯丙基树脂，将20重量％的碳纤维捏合，将混合物加热至320℃，将混合的溶液从保持在100℃的锥形模具的原点排出。

2. 发明专利

JPS5962296A Method for forming diaphragm for speaker 失效
标题翻译：用于形成扬声器的膜片的方法
公开(公告)号：JPS5962296A
公开(公告)日：1984-04-09
申请号：JP9793082
申请日：1982-06-07
申请人： Matsushita Electric Ind Co Ltd
发明人： KOBAYASHI TERUO , TAKEDA KOUJI , YAMAMOTO TOORU
IPC分类号： B29C45/00 , B29C51/00 , B29C51/10 , H04R7/02 , H04R31/00
CPC分类号： H04R7/02
摘要： PURPOSE:To extend surface sound phenomenon due to split resonance to a high frequency band by forming a diaphragm having film thickness made uniform with only the edge part made thin to improve a surface rigidity as the diaphragm. CONSTITUTION:A thermoplastic resin such as a polyarylate is formed into a film 1, it is heated 2 to near its melting point to fluidize. In this state, elastic bodies 5, 6 fix a part corresponding to an adhesion margin to be adhered to the speaker frame of said film 1. Then, the diaphragm part is formed (C) at the center of the film 1 fixed in ring shape with said elastic bodies 5, 6. This is formed by vacuum forming, compress forming or press forming using a desired shaped metal die 9. The edge part is formed (D) by expanding mechanically the distance between the diaphragm metal die 9 and said elastic bodies 5, 6. This is attained by inserting pseudo cylindrical rings 4, 7 having wedge cross section. Finally, the elastic bodies 5, 6 fixing said adhesion margin are removed from the film.
摘要翻译：目的：通过形成膜厚均匀的膜片，将分裂共振的表面声音现象扩大到高频带，使薄膜的边缘部分变薄，从而提高作为膜片的表面刚度。构成：将热塑性树脂如多芳基化合物形成为膜1，将其加热至接近其熔点以流化。在这种状态下，弹性体5,6将与要粘附的粘合边缘相对应的部分固定在所述薄膜1的扬声器框架上。然后，膜片部分（C）形成在膜1固定成环形的中心通过使用期望的成形金属模具9的真空成形，压缩成形或压制成形来形成。通过机械地扩展隔膜金属模具9和弹性体之间的距离来形成边缘部分（D）这是通过插入具有楔形横截面的假圆柱形环4,7来实现的。最后，将固定所述粘合边缘的弹性体5,6从薄膜上去除。

3. 发明专利

JPS58137397A MANUFACTURE OF DIAPHRAGM FOR SPEAKER 失效
公开(公告)号：JPS58137397A
公开(公告)日：1983-08-15
申请号：JP2001082
申请日：1982-02-10
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TAKEDA KOUJI , YAMAMOTO TOORU , TAKAYAMA SATOSHI , MARUNO YOSHIAKI
IPC分类号： H04R7/02 , B29C45/00 , B29C51/00 , B29C51/10 , B29C51/30 , H04R31/00
摘要： PURPOSE:To form a diaphragm which has an optional thickness distribution and the optional lowest resonance frequency by vacuume forming a film principally of thermoplastic resin. CONSTITUTION:The film consisting principally of thermoplastic resin is used to form a prescribed shape by a vacuum forming, compressed-air forming, or vacuum compressed-air forming method, and the depth of drawing into a forming die and the film area of drawing into the forming die are varied to obtain the diaphragm having an optional thickness distribution. For example, the film 7 consisting principally of thermoplastic resin is formed under a vacuum to prescribed size by using a bottom die 2 equipped with a heating heater 1 and a forming die 6 contained in the recessed part 4 of a top die 5 which has a suction hole 3 by a vacuum pump arranged facing the bottom die 2.

4. 发明专利

JPS58137396A DIAPHRAGM FOR LOUDSPEAKER 失效
公开(公告)号：JPS58137396A
公开(公告)日：1983-08-15
申请号：JP1934882
申请日：1982-02-09
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YAMAMOTO TOORU , MURATA KOUSAKU , TAKEDA KOUJI
IPC分类号： H04R7/02
摘要： PURPOSE:To realize high efficiency, a wide reproduction frequency band, and less strain by forming thermally nonwoven fabric of aramide fiber and methyl pentene polymer fiber. CONSTITUTION:For example, the nonwoven fabric consisting of 20wt% curled aramide fiber of 5cm fiber length and 80wt% curled methyl pentene polymer fiber is manufactured by a card type nonwoven fabric manufacturing machine and the fiber is fixed by heat rolls at 180-220 deg.C. In the card type nonwoven fabric manufacturing machine, the blank fiber is opened by a comber and mixed by a fiber blending machine to supply mixed material from a supplying machine 1 to a conveying machine 2, which conveys it to rotary comb machines 3 and 4 to hook the fiber to manufacture a sheet (web). This thermal formation is carried out by forming dies having band heaters for heating at the external circumferences while the die temperature is held within a 180-240 deg.C range.

5. 发明专利

JPS58137394A DIAPHRAGM FOR SPEAKER 失效
公开(公告)号：JPS58137394A
公开(公告)日：1983-08-15
申请号：JP1934682
申请日：1982-02-09
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YAMAMOTO TOORU , MURATA KOUSAKU , TAKEDA KOUJI
IPC分类号： H04R7/02
摘要： PURPOSE:To realize high efficiency, a wide reproduction frequency band, and less strain by forming nonwoven fabric of aramide fiber and polyester fiber thermally. CONSTITUTION:The nonwoven fabric consisting of, for example, 20wt% curled aramide fiber of 2 denier and 5cm fiber length and 80wt% curled polyethylene terephthalate fiber of 2 denier and 5cm fiber length is formed by a card type nonwoven fabric manufacturing machine and then fixed through heat rolls of 180-220 deg.C. From thus formed nonwoven fabric, a diaphragm with a 10cm diameter is formed by using forming dies 12 and 13 having heating band heaters 10 and 11 at the outer circumferences. In this thermal formation, the die temperature is held within a 180-240 deg. range. Further, the formability is improved by preheating the nonwoven fabric by an infrared-ray heater 16. The thermally formed diaphragm is taken out after the die temperature is decreased to

6. 发明专利

JPS5895494A DIAPHRAGM FOR SPEAKER AND ITS PRODUCTION 失效
公开(公告)号：JPS5895494A
公开(公告)日：1983-06-07
申请号：JP19388781
申请日：1981-12-01
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YAMAMOTO TOORU , TAKEDA KOUJI , MURATA KOUSAKU
IPC分类号： H04R7/12 , H04R31/00
摘要： PURPOSE:To reproduce sounds in a wide band from a low sound band to a high sound band, by heating a thermoplastic resin sheet so that this sheet is higher according as going from the center toward the outside circumferential part and forming this sheet into a conical shape by cold press. CONSTITUTION:A paper sheet 1 where a high-density polyethylene synthetic pulp (80wt%) is used as a base material and carbon fibers (20wt%) having 5mm. fiber length are used as a reinforcing material is heated between heating plates 2 and 3; and heating plates 2 and 3 have tubes 6 and 7 for flow of cooling water in center parts of discs 4 and 5, and band heaters 8 and 9 are provided on outside circumferences of discs 4 and 5. The temperature of heating plates 2 and 3 is 170 deg.C in the cone part and is 210 deg.C in the outside circumferential part, and the heating time is 2 seconds. The softened paper sheet is formed into a conical shape between upper and lower dies 10 and 11 by cold press. A formed diaphragm 14 has 90g/m face density in the center part and has 75g/m face density in the outside circumferential part.

7. 发明专利

JPS5881400A DIAPHRAGM FOR SPEAKER 失效
公开(公告)号：JPS5881400A
公开(公告)日：1983-05-16
申请号：JP18083581
申请日：1981-11-11
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YAMAMOTO TOORU , NIIGUCHI HIROTOSHI , TAKEDA KOUJI , MURATA KOUSAKU
IPC分类号： H04R7/02
摘要： PURPOSE:To obtain a material of good quality by using as a base material a 4.methylpentene-1 polymer or a copolymer consisting principally of the 4.methylpentene-1 polymer, and mixing either or both of inorganic and organic fiber as a reinforcing material. CONSTITUTION:A 4.methylpentene-1 polymer or a copolymer consisting principally of the 4.methylpentene-1 polymer is used as a base material, and at least either organic or inorganic fiber having a high modulus of elasticity is mixed with said base material as a reinforcing material. The fiber uses polyester fiber, boron fiber, carbon fiber, glass fiber, etc. This mixture and base material are kneaded and formed into a film, which is softened by heating and then press- formed to form a speaker diaphragm. Consequently, this diaphragm material has high efficiency and wide-band and flat frequency characteristics.

8. 发明专利

JPS5780602A Method of producing piezoelectric or pyroelectric film 失效
标题翻译：生产压电或微晶薄膜的方法
公开(公告)号：JPS5780602A
公开(公告)日：1982-05-20
申请号：JP15633380
申请日：1980-11-05
申请人： Matsushita Electric Ind Co Ltd
发明人： TAKEDA KOUJI , YAMAMOTO KAZUMASA
IPC分类号： G01J5/02 , C08J7/00 , G01J5/34 , H01B3/00 , H01G7/04 , H01L41/45

9. 发明专利

JPS55104009A PIEZOOELECTRIC OR PYROELECTRIC POLYVINYLIDENE FLUORIDE 失效
公开(公告)号：JPS55104009A
公开(公告)日：1980-08-09
申请号：JP1167679
申请日：1979-02-02
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TAKEDA KOUJI , YAMAMOTO KAZUMASA
IPC分类号： C08F14/22 , C08F14/00 , C08F114/22 , C08J7/00 , H01B3/00 , H01G7/02 , H01L41/18 , H01L41/193

10. 发明专利

JPS6037898A VOICE COIL 失效
公开(公告)号：JPS6037898A
公开(公告)日：1985-02-27
申请号：JP14719583
申请日：1983-08-10
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TAKEDA KOUJI , MURATA KOUSAKU
IPC分类号： H04R9/04
摘要： PURPOSE:To obtain a lightweight bobbin superior in thermal resistance and humidity resistance by producing the bobbin with a bound sheet where a collected mica sheet is impregnated with a polyimide. CONSTITUTION:An N-methylpyrrolidone solution of pyromellitic di-anhydride and aromatic diamine is subjected to heat treatment, and the collected mica sheet obtained by making scaly mica of 8-400 meshes to sheet is impregnated with this N-methylpyrrolidone solution so that a polyimide is regulated to 30wt%, and the collected mica sheet is heated, pressurized, and formed by thermal press to produce a bound sheet having 30mum thickness. A bobbin is formed from this found sheet, and a coil is wound around the outside circumference of this bobbin, thus producing a voice coil.

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