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51. 发明专利

JPH05338042A 失效
公开(公告)号：JPH05338042A
公开(公告)日：1993-12-21
申请号：JP14578392
申请日：1992-06-05
申请人： SEIKO EPSON CORP
发明人： SAITO KAZUYUKI
IPC分类号： B29C35/08 , B29C67/00 , B29K105/24
摘要： PURPOSE:To shorten an exposure time, reduce shape inner stress and minimize a deformation of a shape, by a method wherein UV rays are applied again to a model shaped of UV-curing resin by making use of 3D lithography technique from various directions and cured completely. CONSTITUTION:Optically-shaped model 2 is put on a mirror table 4 provided with turning motive power 5. UV rays to be exposed to the optically shaped model 2 through a UV lamp 1 installed on the upper part or an arbitrary position is applied to every nook and corner of the optically shaped model through a reflection mirror 3. Consequently, sufficient exposure to the whole surface of the optically-shaped model becomes possible. On this occasion, more uniform exposure becomes possible by tuning the mirror table 4.

52. 发明专利

JP2002044781A DIAPHRAGM FOR LOUDSPEAKER, LOUDSPEAKER USING IT, AND PORTABLE TERMINAL MOUNTING LOUDSPEAKER 失效
公开(公告)号：JP2002044781A
公开(公告)日：2002-02-08
申请号：JP2000231168
申请日：2000-07-31
申请人： SEIKO EPSON CORP
发明人： SAITO KAZUYUKI
IPC分类号： H04R7/02 , H04R7/12 , H04R31/00
摘要： PROBLEM TO BE SOLVED: To provide a diaphragm for a loudspeaker capable of obtaining a high sound pressure at low-range frequencies. SOLUTION: A diaphragm is made of polycarbonate material, and has an edge 21 contributing to a frequency characteristic from low-range to middle- range and a cone 22 contributing to the characteristic in high-range. The edge 21 whose cross section in the radial direction is shaped like including an arc projection, and the cone 22 whose cross section in the radial direction is shaped including an arc depression part. Furthermore, a wall thickness of the part 21 or the part 22 is formed in a predetermined range and formed by rolling and cutting materials. Therefore even in the low-rage, over 55 dB high sound pressure is obtained, so that the condition that is a characteristic required for a high-quality loud speaker is obtained.

53. 发明专利

JPH0569447A PRODUCTION OF MASTER MODEL FOR VACUUM CASTING 失效
公开(公告)号：JPH0569447A
公开(公告)日：1993-03-23
申请号：JP23340191
申请日：1991-09-12
申请人： SEIKO EPSON CORP
发明人： SAITO KAZUYUKI
IPC分类号： B29C39/02 , B29C39/26 , B29C39/42 , B29K83/00
摘要： PURPOSE:To obtain a resin mold for easily producing a resin molded product having cutting flange with high accuracy in order to apply secondary processing after molding. CONSTITUTION:A master model 1 for vacuum casting is produced by a process forming a coating layer with predetermined thickness to the outer periphery of the master model 1, a process forming a resin female mold 5 molded using the coated master model as a male mold and a process dividing the resin female mold to take out the master model and subsequently injecting a resin material in the space where the master model 1 has been present under vacuum to cure the same under atmospheric pressure.

54. 发明专利

JP2001138387A BLOW MOLDED ITEM AND METHOD FOR BLOW MOLDING THE SAME 失效
公开(公告)号：JP2001138387A
公开(公告)日：2001-05-22
申请号：JP32173299
申请日：1999-11-11
申请人： SEIKO EPSON CORP
发明人： SAITO KAZUYUKI
IPC分类号： B65D1/00 , B29C49/50 , B65D1/09
摘要： PROBLEM TO BE SOLVED: To provide a blow-molded item having an edge with a good finished predetermined surface and to provide a molding method which decreases man- hour by cutting the blow-molded item to form the edge while it is still kept in the mold. SOLUTION: In a blow-molded item formed by blowing a sealed cylinder 11 of a molten synthetic resin with a pressurized air until it closely contacts a wall surface of a cavity of a mold, the end portion of the cylinder 11 is formed via a process of forming an extended surface 13 by a blowing air pressure for forming the inner surface, the surface 13 being arranged around the cylinder 11 having a plane extending in a direction from an inner side to an outer circumference, and via a process of cutting the extended portion 13 with a cutting blade 25 arranged vertically to the extended surface 13 around the circumference of the cylinder 11.

55. 发明专利

JP2002142287A DIAPHRAGM FOR LOUDSPEAKER AND LOUDSPEAKER USING IT 失效
公开(公告)号：JP2002142287A
公开(公告)日：2002-05-17
申请号：JP2000333022
申请日：2000-10-31
申请人： SEIKO EPSON CORP
发明人： SAITO KAZUYUKI
IPC分类号： H04R7/12 , H04R7/18 , H04R13/02
摘要： PROBLEM TO BE SOLVED: To provide a diaphragm for loudspeaker that can smoothly pass air when a low-band sound pressure occurs and has a small size and a thin thickness, and to provide a loudspeaker using the diaphragm. SOLUTION: The loudspeaker 1 provided with the diaphragm 10 for loudspeaker integrally formed with the loudspeaker 1 is provided with a voice coil 12 in a case 13. The cone section 101 of the diaphragm 10 is formed in a projecting state on the side of a pole piece 15 and the edge section 102 of the diaphragm 10 is formed in a projecting state on the side opposite to the pole piece 15. When the low-band sound pressure occurs, the air existing in the space 104 between the cone section 101 and pole piece 15 is discharged from a vent 111 after passing through a sufficiently wide space 105 and flowing along the flowing route shown by the arrow 121. Therefore, the load resistance applied to the cone section 101 due to the compression of an air layer disappears. The loudspeaker 1 has such a frequency characteristic that loudspeaker 1 can obtain a high-band sound pressure in a low frequency region (of 300 Hz or its vicinity).

56. 发明专利

JP2002135889A DIAPHRAGM FOR SPEAKER, SPEAKER USING IT, AND ITS MANUFACTURING METHOD 失效
公开(公告)号：JP2002135889A
公开(公告)日：2002-05-10
申请号：JP2000323760
申请日：2000-10-24
申请人： SEIKO EPSON CORP
发明人： SAITO KAZUYUKI
IPC分类号： H04R7/14 , H04R31/00
摘要： PROBLEM TO BE SOLVED: To provide a diaphragm for speaker which has the outer peripheral part accurately cut, its manufacturing method, a speaker which has an improved assembling precision of the diaphragm for speaker and a case, and its manufacturing method. SOLUTION: In the first stage, a diaphragm 1 for speaker interposed between an upper forming mold 11 and a lower forming mold 12 is sucked through a suction port 13 at a prescribed pressure. Then a minute conical projection is formed on the diaphragm 1 for speaker. In the second stage, a round blade of a cutter is lowered to the diaphragm 1 for speaker with the projection as a mark to cut the outer peripheral part of the diaphragm 1 for speaker. When the diaphragm for speaker manufactured by this method is stored in the case, a worker aligns the center of the case to the projection formed in the center of the diaphragm 1 for speaker to set the diaphragm for speaker. Consequently, the precision of the diaphragm for speaker and the assembling precision of the speaker are improved.

57. 发明专利

JP2000296536A STRUCTURE OF MOLD USING SYNTHETIC RESIN MATERIAL 失效
公开(公告)号：JP2000296536A
公开(公告)日：2000-10-24
申请号：JP10719399
申请日：1999-04-14
申请人： SEIKO EPSON CORP
发明人： SAITO KAZUYUKI , AKAHA FUMIAKI
IPC分类号： B29C33/38 , B29C45/26
摘要： PROBLEM TO BE SOLVED: To upgrade heat radiation and to shorten a cycle time of molding by providing a high thermal conductivity radiator of a material having a higher thermal conductivity than that of a synthetic resin material at an inside of a mold adjacent to a cavity of the mold made of the resin material. SOLUTION: A high thermal conductivity radiator 6 charged in a radiating member container 3 is charged with a low melting point alloy such as a solder or the like of a molten state, then solidified, formed, and adjacently disposed at its lower surface to a cavity 2. The heated and molten molding material is supplied to the cavity 2, and the molding material is charged to be copied with an inner surface of the cavity 2 and a lower surface of the radiator 6. During charging and after the charging is completed, a heat in the material is radiated through the resin material for forming the cavity 2, and mainly radiated through the radiator 6 and a core plate 4, and a temperature of the mold is quickly transferred to a suitable temperature to next molding. Thus, the heat in the molding material is conducted, radiated through the radiator 6 to shorten a molding cycle.

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