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31. 发明专利

JP2004273709A Piezoelectric transformer 审中-公开
公开(公告)号：JP2004273709A
公开(公告)日：2004-09-30
申请号：JP2003061587
申请日：2003-03-07
申请人： Toko Inc , 東光株式会社
发明人： MORI KENSHIN , TAKANO KATSUYOSHI
IPC分类号： H01L41/107
摘要： PROBLEM TO BE SOLVED: To improve compatibility with a low impedance load and to suppress the influence of a stray capacitance by increasing the secondary capacitance.
SOLUTION: In a piezoelectric transformer provided with input and output electrodes of a piezoelectric ceramic cylinder, the input electrodes are provided on the front and rear surfaces of about 1/4 of the whole length on both of the ends, and the parts are polarized in the direction of front and rear surfaces. The other parts are polarized in a longitudinal direction, and provided with the output electrodes on an outer periphery in the center. And addition to those mentioned above, by utilizing not only the vibration mode of the elasticity in the longitudinal direction of a cylindrical piezoelectric body where both sides of the output electrodes are driven by opposite phases but also the vibration mode of the elasticity in the direction of a diameter, the piezoelectric transformer of a large power can be realized.
COPYRIGHT: (C)2004,JPO&NCIPI

32. 发明专利

JP2004146653A Piezoelectric transformer 审中-公开
公开(公告)号：JP2004146653A
公开(公告)日：2004-05-20
申请号：JP2002310870
申请日：2002-10-25
申请人： Toko Inc , 東光株式会社
发明人： MORI KENSHIN , SATO EIJI , KOBAYASHI TAKESHI , SATO KACHIYASU , TAKANO KATSUYOSHI
IPC分类号： H01L41/107
摘要： PROBLEM TO BE SOLVED: To improve the voltage boosting ratio of a center input and both-end output type piezoelectric transformer using a tertiary surface spread vibration mode, by adjusting the coupling coefficient of the piezoelectric transformer.
SOLUTION: The piezoelectric transformer has input electrodes provided on both the top and reverse surfaces of the lengthwise center of a rectangular piezoelectric ceramic substrate, and output electrodes provided at both their ends. Further, the piezoelectric transformer is provided with two input electrodes as auxiliary driving electrodes on both the sides of the center input electrodes as main driving electrodes, and the piezoelectric ceramic substrate has the part of the input electrodes polarized along the thickness and the output electrode side polarized along the length, so that the center input electrodes as the main driving electrodes and the two input electrodes as the auxiliary driving electrodes are driven in opposite-phase relation.
COPYRIGHT: (C)2004,JPO

33. 发明专利

JP2004063626A Piezoelectric transformer 审中-公开
公开(公告)号：JP2004063626A
公开(公告)日：2004-02-26
申请号：JP2002217895
申请日：2002-07-26
申请人： Toko Inc , 東光株式会社
发明人： MORI KENSHIN
IPC分类号： H01L41/107
摘要： PROBLEM TO BE SOLVED: To provide a piezoelectric transformer capable of obtaining two output voltages from one output part and thus lighting two lamps without a ballast capacitor.
SOLUTION: The piezoelectric transformer of an oblique symmetry surface spreading vibration mode capable of obtaining large output is used, and two output electrodes are formed on one end face. The piezoelectric transformer is provided with an input electrode on front and back surfaces on one end side in a longitudinal direction of a piezoelectric ceramic plate whose main plane is a rectangular parallelepiped, and the output electrode on the end face on the opposite side. In the transformer, a vibration mode generated on the piezoelectric ceramic plate is oblique symmetry surface spreading vibration, and two electrodes divided in a widthwise direction are provided as the output electrode.
COPYRIGHT: (C)2004,JPO

34. 发明专利

JP2004055718A Piezoelectric transformer 审中-公开
公开(公告)号：JP2004055718A
公开(公告)日：2004-02-19
申请号：JP2002209294
申请日：2002-07-18
申请人： Toko Inc , 東光株式会社
发明人： SATO EIJI , MORI KENSHIN , KOBAYASHI TAKESHI , TAKANO KATSUYOSHI
IPC分类号： H01L41/107
摘要： PROBLEM TO BE SOLVED: To provide a piezoelectric transformer, which obtains a plurality of outputs by one piezoelectric transformer and can turn on a plurality of cold-cathode ray tubes, obtain a high boosting ratio by increasing an I/O capacitance factor, and enable high power implantation by reducing the input impedance.
SOLUTION: In the piezoelectric transformer, using a surface widening oscillation mode, a main front surface, is equipped with two or more sets of input electrodes which counter central side of rectangular piezoelectric ceramic plate by front and rear side; both end surfaces in the longitudinal direction of the piezoelectric ceramic plate are equipped with output electrodes, respectively; and the plurality of input electrodes are divided into two sets and driven in opposite phase.
COPYRIGHT: (C)2004,JPO

35. 发明专利

JP2003017773A Piezoelectric transformer 有权
标题翻译：压电变压器
公开(公告)号：JP2003017773A
公开(公告)日：2003-01-17
申请号：JP2001198749
申请日：2001-06-29
申请人： Toko Inc , 東光株式会社
发明人： MORI KENSHIN , SATO EIJI , KOBAYASHI TAKESHI , TAKANO KATSUYOSHI
IPC分类号： H01L41/107
摘要： PROBLEM TO BE SOLVED: To remove the effect of spurious when driving in contour vibration mode.
SOLUTION: An approximately square-shaped piezoelectric ceramic plate is driven by a primary contour vibration with input and output electrodes formed on both sides of a half part and an output electrode formed on the opposite end of the piezoelectric ceramic plate. Conductor strip lines in parallel with the output electrode and connecting center part and end parts in a direction of width are formed on the surface of the piezoelectric ceramic plate of the output side. Spurious is shifted to lower frequency by neutralizing and canceling reverse electric potential generated in the spurious vibration mode with the strip line. Cutting off the corner of the piezoelectric ceramic plate in the input side further improves the effect.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：为了消除在轮廓振动模式下驾驶时的杂散效应。解决方案：一个大致正方形的压电陶瓷板由主要轮廓振动驱动，输入和输出电极形成在半部分的两侧，而输出电极形成在压电陶瓷板的另一端。在输出侧的压电陶瓷板的表面上形成有与输出电极平行的导体带状线和宽度方向的连接中心部和端部。通过中和和消除带状线在寄生振动模式下产生的反向电位，将杂散变换为较低频率。在输入侧切掉压电陶瓷板的角落进一步提高效果。

36. 发明专利

JP2003152237A PIEZOELECTRIC TRANSFORMER 审中-公开
公开(公告)号：JP2003152237A
公开(公告)日：2003-05-23
申请号：JP2001347241
申请日：2001-11-13
申请人： TOKO INC
发明人： MORI KENSHIN , TAKANO KATSUYOSHI
IPC分类号： H01L41/107
摘要： PROBLEM TO BE SOLVED: To provide a piezoelectric transformer that has a small size, can be manufactured easily, and can obtain a high boosting magnification. SOLUTION: Input electrodes are formed on both broad end sides of an hourglass-shaped piezoelectric ceramic plate that commonly uses the narrow end face of a trapezoidal piezoelectric ceramic substrate and an output electrode is formed at a narrow central portion of the ceramic plate. Two trapezoidal portions are driven in opposite phases by selecting a proportion which makes the displacement of the central narrow portion very small. A boosting magnification that is almost equal to that of the conventional laminated type piezoelectric transformer can be obtained by driving the trapezoidal portions in a contour vibrating mode in which one trapezoidal portion elongates and the other portion shrinks. Either one of a single piezoelectric ceramic plate and a piezoelectric ceramic substrate the output side of which is connected can be used. The characteristics of this piezoelectric transformer can be improved by selecting the ratio of the widths of both ends to that of the central portion.

37. 发明专利

JP2002314158A PIEZOELECTRIC TRANSFORMER 失效
公开(公告)号：JP2002314158A
公开(公告)日：2002-10-25
申请号：JP2001110901
申请日：2001-04-10
申请人： TOKO INC
发明人： MORI KENSHIN , TAKANO KATSUYOSHI
IPC分类号： H01L41/107
摘要： PROBLEM TO BE SOLVED: To make the driving-frequency range of the main vibration of a piezoelectric transformer free from overlapping with the frequency of unnecessary spurious vibration, by utilizing its contour-vibration mode without using its any special supporting structure. SOLUTION: In the piezoelectric transformer, its input electrode 12 is formed on the front and rear surfaces of the one-end-surface-side half of a nearly square piezoelectric ceramic plate 11 which is present in its longitudinal direction, and its output electrode is formed on the opposite-side end surface thereto. The input-side width of the piezoelectric ceramic plate 11 is so made narrower than the output-side width thereof as to separate the driving frequency of its main vibration from the frequencies of spurious vibrations.

38. 发明专利

JP2001358558A SURFACE ACOUSTIC WAVE FILTER 失效
公开(公告)号：JP2001358558A
公开(公告)日：2001-12-26
申请号：JP2000180882
申请日：2000-06-16
申请人： TOKO INC
发明人： IEIRI MASANORI , MORI KENSHIN
IPC分类号： H03H9/25 , H03H9/64
摘要： PROBLEM TO BE SOLVED: To make connection small by a bulk wave between the resonators of lateral connection and to improve a band pass characteristic. SOLUTION: A slit extending in the transmitting direction of a surface acoustic wave is formed on the backside of a substrate between the two resonators and the amount of the bulk waves transmitted through the substrate is reduced. A connection state is adjusted by the position and the shape of the slit, and the band pass characteristic can be adjusted.

39. 发明专利

JP2002190625A PIEZOELECTRIC TRANSFORMER 失效
公开(公告)号：JP2002190625A
公开(公告)日：2002-07-05
申请号：JP2000387347
申请日：2000-12-20
申请人： TOKO INC
发明人： MORI KENSHIN , KOBAYASHI TAKESHI , SATO EIJI , TAKANO KATSUYOSHI
IPC分类号： H01L41/107
摘要： PROBLEM TO BE SOLVED: To offer a piezoelectric transformer which can utilize a high-power concentration of edge vibration to the maximum by restraining an influence of spurious vibration in the edge vibration mode so as to improve the operating reliability at the time of loaded impedance and by restraining heat generation. SOLUTION: The end of a piezoelectric ceramic plate (piezoelectric transformer element) 11 on the electrode side of the input side is determined to be a supporting position at the point where a displacement quantity of a spurious vibration mode becomes the maximum, namely in the center of a width. In this position, an upper terminal 17 and a lower terminal 18 support the piezoelectric ceramic plate (piezoelectric transformer element) 11 form both the front and back surfaces.

40. 发明专利

JP2008187857A PIEZOELECTRIC ACTUATOR AND SHEET TRANSFER DEVICE HAVING THE SAME 审中-公开
公开(公告)号：JP2008187857A
公开(公告)日：2008-08-14
申请号：JP2007021078
申请日：2007-01-31
申请人： TOKO INC
发明人： MORI KENSHIN
IPC分类号： H02N2/00 , B65H5/06 , B65H20/02 , H01L41/09 , H01L41/187
摘要： PROBLEM TO BE SOLVED: To provide an inexpensive and easily handleable piezoelectric actuator and a sheet transfer device that utilizes the same. SOLUTION: A plate-like piezoelectric vibrator is polarized in the thickness direction and provided with drive electrodes on a pair of main surfaces that face each other, while the shape of the main surface is square-shaped. The plate-like piezoelectric vibrator is used in the piezoelectric actuator. One rotor is press-fitted to each of two side faces forming one corner of the piezoelectric vibrator, and each rotor simultaneously rotates in the opposite direction, with respect to each other, while utilizing the surface spread vibration of the piezoelectric vibrator. COPYRIGHT: (C)2008,JPO&INPIT

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