公开(公告)号：US20060220497A1

公开(公告)日：2006-10-05

申请号：US11391824

申请日：2006-03-29

申请人： Yasuhiro Okamoto ,  Tomoyuki Yuasa

发明人： Yasuhiro Okamoto ,  Tomoyuki Yuasa

IPC分类号： H02N2/00

CPC分类号： H02N2/025

摘要： A piezoelectric element expands and contracts when a pulse voltage is applied. A fixing body is fixed to one end of the piezoelectric element in an expansion-contraction direction. A driving shaft is fixed to the other end of the piezoelectric element in the expansion-contraction direction. A movable body is supported to the driving shaft slidably. When a pulse voltage is applied to the piezoelectric element, the piezoelectric element contracts and expands. Accordingly, the driving shaft oscillates, and the movable body slides along the driving shaft. A material of the driving shaft is fiber reinforced resin complex. A synthetic resin material composing the fiber reinforced resin complex is liquid crystal polymer or polyphenylene sulfide.

摘要翻译： 当施加脉冲电压时，压电元件膨胀和收缩。 固定体在膨胀收缩方向固定在压电元件的一端。 驱动轴在膨胀收缩方向固定在压电元件的另一端。 可移动体可滑动地支撑在驱动轴上。 当压电元件施加脉冲电压时，压电元件收缩并膨胀。 因此，驱动轴摆动，可动体沿驱动轴滑动。 驱动轴的材料是纤维增强树脂复合体。 构成纤维增强树脂配合物的合成树脂材料是液晶聚合物或聚苯硫醚。

公开(公告)号：US20060186758A1

公开(公告)日：2006-08-24

申请号：US11353691

申请日：2006-02-14

申请人： Tomoyuki Yuasa ,  Yasuhiro Okamoto

发明人： Tomoyuki Yuasa ,  Yasuhiro Okamoto

IPC分类号： H01L41/09

CPC分类号： H02N2/025 ,  H02N2/067

摘要： A driving device of the invention has an electromechanical transducer that extends and contracts upon application of voltage thereto, a support member that slidably supports a movable body and is displaced with the electromechanical transducer to which the support member is connected, and a drive circuit that applies the voltage to the electromechanical transducer, wherein applied to the electromechanical transducer by the drive circuit is the voltage which increases or decreases from a first voltage to a last voltage in a stepped manner and in which at least three values sequentially circulates, the movable body is relatively moved with respect to the support member by making a difference between an extension velocity and a contraction velocity when the electromechanical transducer extends and contracts upon application of the voltage thereto, and a period of time for which the first voltage is applied is changeable.

摘要翻译： 本发明的驱动装置具有在施加电压时延伸和收缩的机电换能器，支撑构件，其可滑动地支撑可移动体并且与连接有支撑构件的机电换能器一起移位，并且驱动电路适用于 通过驱动电路施加到机电换能器的机电换能器的电压是以阶梯式方式从第一电压增加或减小到最后电压的电压，并且其中至少三个值顺序循环，可移动体是 通过在机电换能器延伸时的延伸速度和收缩速度之间的差异相对于支撑构件相对移动，并且在施加电压时收缩，并且施加第一电压的时间段是可变的。

公开(公告)号：US20050212384A1

公开(公告)日：2005-09-29

申请号：US11088369

申请日：2005-03-24

申请人： Yasuhiro Okamoto

发明人： Yasuhiro Okamoto

IPC分类号： G02B7/04 ,  G02B7/08 ,  H01L41/09 ,  H02N2/00

CPC分类号： H02N2/025 ,  G02B7/08

摘要： A driving apparatus of the invention is arranged to drive an optical lens according to expansion and contraction of an electromechanical transducer. The driving apparatus comprises a fixed member connected to one end of the electromechanical transducer in a direction of expansion and contraction; a friction drive shaft connected to the other end of the electromechanical transducer; a hinge fixedly provided relative to the optical lens; a first frictional connecting part fixedly provided relative to the optical lens; a second frictional connecting part which is movably provided relative to the hinge and grasps the frictional drive shaft in cooperation with the first frictional connecting part from a direction perpendicular to the expansion and contraction direction of the electromechanical transducer; and a spring mounted extending around the optical lens and pinch the first and the second frictional connecting parts between both ends of the spring.

摘要翻译： 本发明的驱动装置被设置成根据机电换能器的膨胀和收缩来驱动光学透镜。 所述驱动装置包括在伸缩方向上连接到所述机电换能器的一端的固定部件; 连接到机电换能器的另一端的摩擦驱动轴; 相对于光学透镜固定设置的铰链; 相对于所述光学透镜固定设置的第一摩擦连接部; 第二摩擦连接部，其相对于所述铰链可移动地设置，并且从与所述机电换能器的伸缩方向垂直的方向与所述第一摩擦连接部配合地抓握所述摩擦驱动轴; 以及安装在光学透镜周围的弹簧，并且弹簧的两端之间夹住第一和第二摩擦连接部件。

公开(公告)号：US06838656B2

公开(公告)日：2005-01-04

申请号：US10734304

申请日：2003-12-15

申请人： Yasuhiro Okamoto

发明人： Yasuhiro Okamoto

IPC分类号： G01V8/10 ,  G06M7/00 ,  H01J40/14

CPC分类号： G01V8/10

摘要： A photoelectric sensor is disclosed that comprises a sensor unit having a casing. The casing includes one surface having a first display and a second display. The first display is structured and arranged to display a threshold value that may be set by an operator of the photoelectric sensor. The second display is structured and arranged to display the actual conditions sensed by said photoelectric sensor. The sensor also includes a selection device for selecting different operational values to display on the second display. The selection device can include a mechanism disposed on the casing for changing the different operational values on the second display. The selection device can also include an adjustment switch disposed on the casing. The adjustment switch allows the operator to adjust the threshold value shown on the first display while the second display shows at least one of the actual conditions sensed by the photoelectric sensor. The photoelectric sensor can be an integrated sensor or can include at least two parts, namely a sensor head and a main body unit. The sensor also can have a plurality of different display setting modes that can be shown on the displays and an operator may set these modes. These different modes include a power setting mode, a hold setting mode and a timer setting mode, each of which can have a plurality of displayable conditions.

摘要翻译： 公开了一种光电传感器，其包括具有壳体的传感器单元。 壳体包括具有第一显示器和第二显示器的一个表面。 第一显示器被构造和布置成显示可以由光电传感器的操作者设置的阈值。 第二显示器被构造和布置成显示由所述光电传感器感测的实际状况。 传感器还包括用于选择在第二显示器上显示的不同操作值的选择装置。 选择装置可以包括设置在壳体上用于改变第二显示器上的不同操作值的机构。 选择装置还可以包括设置在壳体上的调节开关。 调节开关允许操作者调整第一显示器上显示的阈值，而第二显示器显示由光电传感器感测的至少一个实际条件。 光电传感器可以是集成传感器，或者可以包括至少两个部分，即传感头和主体单元。 传感器还可以具有可以在显示器上显示的多种不同的显示设置模式，并且操作者可以设置这些模式。 这些不同的模式包括功率设定模式，保持设置模式和定时器设置模式，每个模式可以具有多个可显示条件。

公开(公告)号：US06727635B2

公开(公告)日：2004-04-27

申请号：US09948699

申请日：2001-09-10

申请人： Yasuhiro Okamoto ,  Ryuichi Yoshida ,  Haruyuki Nakano

发明人： Yasuhiro Okamoto ,  Ryuichi Yoshida ,  Haruyuki Nakano

IPC分类号： H01L4108

CPC分类号： H02N2/067 ,  H02N2/025

摘要： A smooth impact drive mechanism utilizing an electromechanical conversion element, in which a preheating voltage to preheat the electromechanical conversion element is impressed thereto before the impression of a drive voltage to the electromechanical conversion element, in order to realize stable drive characteristics by reducing fluctuation in the speed of the moving unit. In addition, drive parameters are changed in accordance with the temperature of the electromechanical conversion element. Furthermore, drive parameters are changed in accordance with the moving speed of the moving unit.

摘要翻译： 一种利用机电转换元件的平滑冲击驱动机构，其中在机电转换元件的驱动电压的压印之前，将机电转换元件预热的预热电压施加到机电转换元件，以便通过减小机电转换元件的波动来实现稳定的驱动特性 移动单元的速度。 此外，驱动参数根据机电转换元件的温度而改变。 此外，驱动参数根据移动单元的移动速度而改变。

公开(公告)号：US06646251B1

公开(公告)日：2003-11-11

申请号：US09617861

申请日：2000-07-17

申请人： Yasuhiro Okamoto

发明人： Yasuhiro Okamoto

IPC分类号： G06M700

CPC分类号： G01V8/12

摘要： A tolerance-level display portion 12 is provided in a casing 11 of a head 1 of a photoelectric switch. A light reception signal output from the head 1 is transmitted through a cable 31b of a main body 2. The casing 21 of the main body 2 contains a received light amount display portion 22, a tolerance-level display portion 24, adjust switches 28 and setting switches 29. The CPU in the main body 2 calculates a ratio of a light reception signal to a threshold value to obtain a tolerance level, and applies a control signal corresponding to the obtained tolerance level to a variable power supply circuit. The variable power supply circuit applies a variable voltage, which is dependent on the control signal, through a cable 31a to the head 1. The tolerance-level display portion 12 of the head 1 displays a tolerance level on the basis of the variable voltage by turning on the tolerance-level display LEDs 12a, 12b and 12c.

摘要翻译： 公差级显示部分12设置在光电开关的头部1的壳体11中。 从头1输出的光接收信号通过主体2的电缆31b传输。主体2的壳体21包含接收光量显示部分22，公差等级显示部分24，调节开关28和 设置开关29.主体2中的CPU计算光接收信号与阈值的比率以获得公差电平，并将与获得的公差电平相对应的控制信号施加到可变电源电路。 可变电源电路通过电缆31a向头部1施加取决于控制信号的可变电压。头1的公差等级显示部分12基于可变电压显示公差电平， 打开公差级显示LED 12a，12b和12c。

公开(公告)号：US06512321B2

公开(公告)日：2003-01-28

申请号：US09789504

申请日：2001-02-22

申请人： Ryuichi Yoshida ,  Yasuhiro Okamoto ,  Hiroyuki Okada

发明人： Ryuichi Yoshida ,  Yasuhiro Okamoto ,  Hiroyuki Okada

IPC分类号： H01L4108

CPC分类号： H02N2/067 ,  G03B3/10 ,  G03B2205/0061 ,  H02N2/025

摘要： A driving apparatus includes an electromechanical conversion element that expands and contracts through the application of a drive voltage, the electromechanical conversion element includes a first end and a second end. The apparatus further includes a support member that is fixed to the first end of the electromechanical conversion element in a direction of expansion or contraction of the electromechanical conversion element; a drive member that is fixed to the second end of the electromechanical conversion element in the direction of expansion or contraction; an engaging member that engages with the drive member with a friction force; and a drive circuit that drives the electromechanical conversion element. The drive circuit generates a rectangular waveform drive voltage and applies the rectangular waveform drive voltage to the electromechanical conversion element to cause the electromechanical conversion element to expand and contract at different speeds to thereby move the support member and the engaging member relative to each other.

摘要翻译： 驱动装置包括通过施加驱动电压而膨胀和收缩的机电转换元件，该机电转换元件包括第一端和第二端。 该装置还包括支撑构件，其在机电转换元件的膨胀或收缩方向上固定到机电转换元件的第一端; 驱动构件，其在膨胀或收缩的方向上固定到所述机电转换元件的第二端; 与摩擦力与驱动构件接合的接合构件; 以及驱动所述机电转换元件的驱动电路。 驱动电路产生矩形波形驱动电压并将矩形波形驱动电压施加到机电转换元件，以使机电转换元件以不同的速度膨胀和收缩，从而相对于彼此移动支撑构件和接合构件。

公开(公告)号：US06188161B1

公开(公告)日：2001-02-13

申请号：US09088636

申请日：1998-06-02

申请人： Ryuichi Yoshida ,  Yasuhiro Okamoto

发明人： Ryuichi Yoshida ,  Yasuhiro Okamoto

IPC分类号： H01L4108

CPC分类号： B82Y15/00 ,  H02N2/025

摘要： A driving apparatus includes an electromechanical transducer that is connected to a drive pulse generating means and that expands and contracts, a driven member that is connected to one end of the transducer, a friction member that is connected to the other end of the transducer and a guide unit that is in frictional contact with the friction member. The friction member has an elastic deforming mechanism that elastically presses against and comes into frictional contact with the guide unit, and the elastic deforming mechanism is constructed such that its elastic deformation stress vector perpendicularly crosses the directions of expansion and contraction of the transducer.

摘要翻译： 一种驱动装置，包括连接到驱动脉冲产生装置的机电换能器，并且其连接到换能器的一端的被驱动部件膨胀和收缩;连接到换能器的另一端的摩擦件， 与摩擦构件摩擦接触的导向单元。 摩擦构件具有弹性变形机构，弹性变形机构弹性地按压并与引导单元摩擦接触，并且弹性变形机构被构造成使得其弹性变形应力矢量垂直于穿过换能器的膨胀和收缩方向。

公开(公告)号：US6147434A

公开(公告)日：2000-11-14

申请号：US59147

申请日：1998-04-13

申请人： Haruyuki Nakano ,  Satoshi Shinke ,  Ryuichi Yoshida ,  Yasuhiro Okamoto

发明人： Haruyuki Nakano ,  Satoshi Shinke ,  Ryuichi Yoshida ,  Yasuhiro Okamoto

IPC分类号： H01L41/04 ,  H01L41/09 ,  H02N2/00 ,  H02N2/06

CPC分类号： H02N2/067 ,  H02N2/025

摘要： A drive device using a piezoelectric transducer for correcting a shift of a position of a drive system based on a change in an environmental state such as environmental temperature, in which a drive member coupled to the piezoelectric transducer is driven by causing displacements having different speeds by applying drive pulses of saw tooth waves to the piezoelectric transducer thereby moving a slider block frictionally coupled to the drive member, an amount of a shift of a position of the slider block based on the change in the environmental temperature is previously stored to a memory, when a change in temperature is detected by a temperature sensor, the amount of the shift of the position of the slider block is calculated in accordance with the change in temperature and the shift of the position of the slider block is corrected by driving the piezoelectric transducer in a direction of correcting the shift amount by driving a fine adjustment circuit.

摘要翻译： 一种使用压电传感器的驱动装置，其基于环境温度的变化来校正驱动系统的位置的偏移，其中通过使具有不同速度的位移由与压电换能器连接的驱动构件 将锯齿波的驱动脉冲施加到压电换能器，从而移动摩擦联接到驱动构件的滑动块，基于环境温度的变化将滑动块的位置的偏移量预先存储到存储器中， 当通过温度传感器检测到温度变化时，根据温度的变化来计算滑块的位置的偏移量，并且通过驱动压电换能器来校正滑动块的位置的移动 在通过驱动微调电路来校正移动量的方向上。

公开(公告)号：US5969464A

公开(公告)日：1999-10-19

申请号：US840825

申请日：1997-04-16

申请人： Haruyuki Nakano ,  Satoshi Shinke ,  Ryuichi Yoshida ,  Yasuhiro Okamoto

发明人： Haruyuki Nakano ,  Satoshi Shinke ,  Ryuichi Yoshida ,  Yasuhiro Okamoto

IPC分类号： H01L41/04 ,  H01L41/09 ,  H02N2/14 ,  H02N2/00

CPC分类号： H02N2/025 ,  H02N2/067

摘要： A drive device which repeats charging and discharging at different velocities by applying drive pulses to a piezoelectric transducer, causes vibrations with different velocities in the piezoelectric transducer to cause contraction and expansion displacements in a driving member fixedly coupled with the piezoelectric transducer for moving a member frictionally coupled to the driving member. In order to provide stable driving force, stable driving velocity and precise movement, a piezoelectric transducer constituted by stacking a plurality of unit elements is divided into a plurality of blocks having different numbers of lamination layers for driving. A change in impedance by the division is compensated by a compensation circuit, or a plurality of driving circuits corresponding to the impedance are provided and a block and a driving circuit of the piezoelectric transducer are selected in accordance with the driving velocity and moving distance for driving.

摘要翻译： 通过向压电换能器施加驱动脉冲来重复不同速度的充电和放电的驱动装置在压电换能器中引起不同速度的振动，从而在与压电换能器固定耦合的驱动构件中引起收缩和膨胀位移，以摩擦地移动构件 耦合到驱动构件。 为了提供稳定的驱动力，稳定的驱动速度和精确的运动，将由多个单元组成的压电换能器分成多个具有不同层压层的驱动块。 通过补偿电路来补偿由除法产生的阻抗的变化，或者提供与阻抗相对应的多个驱动电路，并根据驱动速度和驱动移动距离来选择压电换能器的块和驱动电路 。