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公开(公告)号：JPH08317668A
公开(公告)日：1996-11-29
申请号：JP12243495
申请日：1995-05-22
Applicant: TOYOTA MOTOR CORP
Inventor： SAKAI TAKENOBU , FUJIOKA YASUO
IPC: H02N2/00
Abstract: PURPOSE: To obtain a rotating driving gear by which a spring can be converted into a turning force with good efficiency by a method wherein the spring one end of which has been fixed so as to come into internal contact or external contact with the internal face or the external face of a component is arranged and installed and a vibrator which gives a vibration to the spring is attached. CONSTITUTION: A vibrator 1 such as an ultrasonic vibrator, an electromagnetic vibrator or the like which is composed of a piezoelectric element is attached to a part of a spring 2, one end of the spring is fixed by a fixation member 4, and a cylindrical moving body 3 which comes into external contact with the spring is installed. That is to say, when a vibration is given to the vibrator 1 so as to compress and expand the spring up and down, a force (a) in a relaxation direction and a force (b) in which the spring is lengthened in a line direction are generated, e.g. at a contact in the relaxation direction (actually, the spring comes into contact on the whole outer circumferential face). A resultant force (c) becomes a driving force which turns the cylindrical moving body which comes into external contact.
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公开(公告)号：JPH08111898A
公开(公告)日：1996-04-30
申请号：JP13512194
申请日：1994-05-25
Applicant: TOYOTA MOTOR CORP
Inventor： OKAZAKI TOSHIHIRO , SAKAI TAKENOBU
Abstract: PURPOSE: To suppress the temperature rise of an acoustic matching body and the change of vibration characteristics due to it and to improve ultrasonic transmission performance and ultrasonic reception sensitivity more than before. CONSTITUTION: This sensor is provided with a vibration body 14 composed of a piezoelectric element, the acoustic matching body 16 joined to the vibration body for transmitting vibration between the vibration body and an atmosphere and a practically cylindrical casing 22 joined to the acoustic matching body around the vibration body at one end for supporting the acoustic matching body. In the ultrasonic sensor 10, the joining ratio of the acoustic matching body 16 to the casing 22 (the ratio of the length in a peripheral direction of the outer periphery of the joined part of the acoustic matching body and the casing to the length in the peripheral direction of the outer periphery of the mutually opposing part of the acoustic matching body and the casing) is less than 60%.
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公开(公告)号：JPH07198827A
公开(公告)日：1995-08-01
申请号：JP33611593
申请日：1993-12-28
Applicant: TOYOTA MOTOR CORP
Inventor： SAKAI TAKENOBU
Abstract: PURPOSE:To expand the distance-measuring range and to detect a speed with high accuracy in a speed detection apparatus which uses Doppler effect of ultrasonic waves. CONSTITUTION:An ultrasonic-wave transmitter-receiver 10 is constituted so as to contain a piezoelectric vibrator 12 and a diaphragm 14. The piezoelectric vibrator 12 is not nearly disk-shaped, and it is formed in such a way that a protrusion part is formed on its bottom face so as to change its thickness. When the thickness of the piezoelectric vibrator 12 is changed, a plurality, of resonance points exist in the piezoelectric vibrator 12, the sound pressure level of transmitted ultrasonic waves is increased, and the reception sensitivity of reflected waves is enhanced.
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公开(公告)号：JPH0748172A
公开(公告)日：1995-02-21
申请号：JP19470393
申请日：1993-08-05
Applicant: TOYOTA MOTOR CORP
Inventor： SAKAI TAKENOBU
IPC: C04B35/49 , H01L41/187
Abstract: PURPOSE:To provide a piezoelectric material composition suitable for automotive actuators. CONSTITUTION:The objective composition has a composition of rhombohedral system side rather than MPB composition at the phase boundary, e.g. a composition expressed by the formula: Pb1-x-ySrxBayLaz(ZraTi1-a-bMb)O3 (0.09
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公开(公告)号：JPH0687661A
公开(公告)日：1994-03-29
申请号：JP23449792
申请日：1992-09-02
Applicant: TOYOTA MOTOR CORP
Inventor： SAKAI TAKENOBU
IPC: C04B35/49 , C04B35/64 , H01L41/187
Abstract: PURPOSE:To make the piezoelectric characteristic and strength of the products uniform by uniformly mixing and controlling the lead atmosphere and oxygen atmosphere around a piezoelectric ceramic compact. CONSTITUTION:A piezoelectric ceramic compact is sintered in a lead atmosphere and in an oxygen atmosphere to produce a piezoelectric ceramic. A lead oxide capable of liberating and adjusting the lead atmosphere and oxygen atmosphere at the same time is arranged under or around the compact as the seat powder or covering powder. Since the lead and oxygen atmospheres are simultaneosuly liberated from under or around the compact, the atmospheres are uniformly mixed around the compact. Consequently, the sintered compact is densified, and the piezoelectric characteristic and strength of the products are surely improved and made uniform.
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Patent Agency Ranking
公开(公告)号：JPH05319926A
公开(公告)日：1993-12-03
申请号：JP12451192
申请日：1992-05-18
Applicant: TOYOTA MOTOR CORP
Inventor： SAKAI TAKENOBU
IPC: C04B35/49 , H01L41/187
Abstract: PURPOSE:To maintain the piezo-electrostriction constant and the Curie temperature at the substantially same high values as those of conventional porcelains and simultaneously improve the antifolding strength representing the strength of the porcelain. CONSTITUTION:The raw material powder prepared so as to give a composition represented by formula: (Pb1-xSrx)(ZryTi1-y-zNbz)O3 [0.08
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公开(公告)号：JPH05159618A
公开(公告)日：1993-06-25
申请号：JP32572691
申请日：1991-12-10
Applicant: TOYOTA MOTOR CORP
Inventor： SAKAI TAKENOBU
IPC: H01B1/16 , H01L21/283 , H01L21/288 , H01L21/822 , H01L27/04 , H01L41/083 , H01L41/09 , H05K1/09
Abstract: PURPOSE:To prevent the generation of short circuit in an Ag group electrode to be caused by migration. CONSTITUTION:The conductive material for electrode consists of an AG group particle 1 and a coating layer 2, which is coated on the surface of the Ag group particle 1 and which is made of the conductive material having the migration resistance higher than that of the Ag group particle 1. Ag electrode made of this material can highly prevent the ionization of Ag at the particle level against the mechanical stress and the thermal stress from the outside to prevent the migration of Ag securely.
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公开(公告)号：JPH03252351A
公开(公告)日：1991-11-11
申请号：JP4680890
申请日：1990-02-27
Applicant: KOKUSAI CHODENDO SANGYO GIJUTS , SHOWA ELECTRIC WIRE & CABLE CO , CHUBU ELECTRIC POWER , TOYOTA MOTOR CORP
Inventor： NAGAYA SHIGEO , MIYAJIMA MASAMICHI , SAKAI TAKENOBU , HIRABAYASHI IZUMI , TANAKA SHOJI
Abstract: PURPOSE:To obtain the subject superconductor having excellent characteristics by heat treating a mixed powder containing a specified powder and having a composition of the above-mentioned oxide superconductor at a prescribed and comparatively low temperature for a comparatively short time. CONSTITUTION:A solid phase (e.g. Y2O3) existing together with a liquid phase when a Y-based oxide superconductor (e.g. Y-Ba-Cu-O-based oxide) is heated at >= a prescribed temperature is used as the core and the core is covered with a substance (e.g. BaCuO2) containing elements capable of a reaction with the above-mentioned core and production of the above-mentioned oxide superconductor thereby. The above obtained powder is then blended with another powder and the resultant mixed powder (e.g. mixed powder containing both BaCuO2 powder and CuO powder) containing the above-mentioned powder and having the composition of the above-mentioned oxide superconductor is heat treated at a temperature in the neighborhood of the melting point of the above- mentioned covering material.
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公开(公告)号：JPS63162575A
公开(公告)日：1988-07-06
申请号：JP31343486
申请日：1986-12-25
Applicant: TOYOTA MOTOR CORP
Inventor： SAKAI TAKENOBU , KAWAMOTO HIROSHI
IPC: C04B35/565 , C04B35/56 , C04B35/58 , C04B35/584 , C04B35/599
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公开(公告)号：JPS6177740A
公开(公告)日：1986-04-21
申请号：JP20028084
申请日：1984-09-25
Applicant: Toyota Motor Corp
Inventor： HIGASHIDE KAZUNORI , SAKAI TAKENOBU
CPC classification number: G01N11/14 , B28B17/0063
Abstract: PURPOSE:To evaluate kneading property, by measuring specified amounts of resin and ceramic powder to be used before injection molding, inputting the resin and the ceramic powder in a rotary viscosimeter, which is kept at a specified temperature, kneading them at a specified number of rotations, and measuring the duration of the maximum fluctuation width of the rotary torque. CONSTITUTION:Ceramic powder and a resin are kneaded, and a required molded product is manufactured by injection molding. Before manufacture, specified amounts of the resin and the ceramic powder to be used are measured and put into a rotary viscosimeter, which is kept at a specified temperature. They are kneaded at a specified number of rotations. After the start of kneading, the time period, during which the fluctuation width of the rotary torque value keeps the maximum value, is measured. Based on the measured time period, the kneading property of the ceramic powder and the resin used for the injection molding is evaluated. The kneading property of the ceramic powder and the resin is accurately evaluated before the kneading. Thus the fluidic molding pressure of the kneaded material can be accurately controlled.
Abstract translation: 目的：为了评价捏合性，通过在注射成型前测定规定量的树脂和陶瓷粉末，将树脂和陶瓷粉末输入到保持规定温度的旋转粘度计中，将其以规定数量 旋转，并测量旋转扭矩的最大波动宽度的持续时间。 构成：将陶瓷粉末和树脂捏合，通过注射成型制造所需的成型体。 在制造前，测定规定量的树脂和陶瓷粉末，并放入保持在规定温度的旋转粘度计。 他们以指定的转数揉捏。 在开始捏合之后，测量旋转扭矩值的波动宽度保持最大值的时间段。 基于测量时间，评估陶瓷粉末和用于注射成型的树脂的捏合性能。 在捏合前对陶瓷粉末和树脂的捏合特性进行精确评估。 因此，可以精确地控制捏合材料的流体成型压力。
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