公开(公告)号：US4886382A

公开(公告)日：1989-12-12

申请号：US153371

申请日：1988-02-08

申请人： Takashi Oota ,  Tadao Uchikawa

发明人： Takashi Oota ,  Tadao Uchikawa

IPC分类号： B41J2/295 ,  H01L41/09

CPC分类号： H02N2/043 ,  B41J2/295

摘要： In a printing hammer which is for use in a printer head and comprises a piezoelectric actuator (16) coupled to a base member (15) by a resilient coupler (23), an arm (19) carrying a printing wire (26), and a first resilient hinge (21) coupling the piezoelectric actuator to the arm, first and second resilient parts (221, 222) are used collectively as a second resilient hinge which couples the arm to the base member. The first and the second resilient parts are both sides of the first resilient hinge on a single plane which has a step of a predetermined size relative to the first resilient hinge in a direction of its thickness. The piezoelectric actuator may be fixed directly to the base member in order to give the printing hammer a high printing speed. Preferably, the first resilient hinge and the first and the second resilient parts are manufactured separately of the arm and/or the base member and brazed in grooves formed in a thick arm end with a spacing of the predetermined size, in a groove formed in an actuator block of the piezoelectric actuator, and in grooves formed in a pair of side legs of the base member. The first resilient hinge may have a T form with the top stroke of the T form brazed in the groove. The first and the second resilient parts may be both branches of a U form.

公开(公告)号：US4672257A

公开(公告)日：1987-06-09

申请号：US820603

申请日：1986-01-21

申请人： Takashi Oota ,  Tadao Uchikawa ,  Naoto Okihara ,  Yoshiki Aihara ,  Kazutoshi Wakamatsu

发明人： Takashi Oota ,  Tadao Uchikawa ,  Naoto Okihara ,  Yoshiki Aihara ,  Kazutoshi Wakamatsu

IPC分类号： H01H57/00 ,  H01L41/08

CPC分类号： H01H57/00 ,  H01H2057/003

摘要： Disclosed is a piezoelectric actuator comprising a pair of piezoelectric elements, bistable snap-action means, and projectile means attached to the snap-action means in an impact receiving relationship alternately with the piezoelectric elements. The projectile means has a mass sufficient to acquire an acceleration upon impact from each of the piezoelectric elements to cause the snap-action means to change state. The snap-action means may comprise an elongated bending element squeezed endwise between supports, the projectile means being carried by bending element at a point intermediate its ends.

摘要翻译： 公开了一种压电致动器，其包括一对压电元件，双稳态快动装置和以与压电元件交替的冲击接收关系附接到快动装置的弹丸装置。 射弹装置具有足以在来自每个压电元件的冲击时获得加速度的质量，以使快动装置改变状态。 快动装置可以包括在支撑件之间向内挤压的细长弯曲元件，射出装置在其端部之间的点处由弯曲元件承载。

公开(公告)号：US4570095A

公开(公告)日：1986-02-11

申请号：US659354

申请日：1984-10-10

申请人： Tadao Uchikawa

发明人： Tadao Uchikawa

IPC分类号： B41J2/295 ,  H01H57/00 ,  H01L41/09 ,  H01L41/08

CPC分类号： H02N2/043 ,  H01H2003/463 ,  H01H57/00

摘要： A mechanical amplification structure has a pair of L-shaped lever arms mounted for rotational motion about individually associated pivot points on a frame. An elongated transducer (e.g. piezoelectric or electrostrictive) expands or contracts responsive to electrical signals, the transducer being coupled to swing the lever arms about the pivot points. Thus an excursion distance between the swinging ends of the lever arms is equal to the expansion or contraction of the transducer multiplied by an effective length of the lever arms. An elastic support is coupled between the swinging ends of the arms to experience controlled mechanical excursions responsive to the electrical signals. A mechanical actuator is mounted on the elastic support for giving a mechanical action in response to an operation of the actuator means. As shown, the actuator is a printing needle in one embodiment and a relay contact in another embodiment.

摘要翻译： 机械放大结构具有一对L形杠杆臂，其安装成围绕框架上的单独关联的枢转点进行旋转运动。 伸长的换能器（例如压电或电致伸缩）响应于电信号而膨胀或收缩，换能器被联接以围绕枢转点摆动杠杆臂。 因此，杠杆臂的摆动端之间的偏移距离等于换能器的膨胀或收缩乘以杠杆臂的有效长度。 弹性支撑件联接在臂的摆动端之间，以经受受电气信号的受控的机械偏移。 机械致动器安装在弹性支撑件上，以响应于致动器装置的操作而产生机械作用。 如图所示，在另一实施例中，致动器是一个实施例中的印刷针和继电器触点。

公开(公告)号：US4933590A

公开(公告)日：1990-06-12

申请号：US322212

申请日：1989-03-13

申请人： Takeshi Inoue ,  Osamu Ohnishi ,  Osamu Myohga ,  Sadayuki Takahashi ,  Tadao Uchikawa

发明人： Takeshi Inoue ,  Osamu Ohnishi ,  Osamu Myohga ,  Sadayuki Takahashi ,  Tadao Uchikawa

IPC分类号： H02N2/00 ,  H01L41/09 ,  H02N2/16

CPC分类号： H02N2/0045 ,  H02N2/106

摘要： This invention provides an ultrasonic motor using a bolt-tightened Langevin type torsional vibrator as a stator. The stator produces a vibrational energy to be converted into a rotational energy for a rotor contacted with the stator. The rotor is provided between a piezoelectric actuator and the torsional vibrator so that the contact state between the rotor and the torsional vibrator is controlled either one of loose contact and tight contact therebetween. According to the present invention, since the piezoelectric actuator is slidingly combined to the rotor, the rotation energy is not applied to the piezoelectric actuator and thus the life time of the actuator becomes long.

摘要翻译： 本发明提供一种使用螺栓紧固的朗格温型扭转振动器作为定子的超声波马达。 定子产生的振动能被转换为与定子接触的转子的旋转能量。 转子设置在压电致动器和扭转振动器之间，使得转子和扭转振动器之间的接触状态被控​​制为两者之间的松动接触和紧密接触。 根据本发明，由于压电致动器滑动地组合到转子上，因此旋转能量不施加到压电致动器，因此致动器的寿命变长。

公开(公告)号：US4675568A

公开(公告)日：1987-06-23

申请号：US765044

申请日：1985-08-12

申请人： Tadao Uchikawa ,  Kunio Kitagawa

发明人： Tadao Uchikawa ,  Kunio Kitagawa

IPC分类号： B41J2/295 ,  H01H57/00 ,  H01L41/09 ,  H01L41/08 ,  B41J3/12

CPC分类号： B41J2/295 ,  H01H2003/463 ,  H01H57/00 ,  H02N2/043

摘要： A piezoelectric transducer for a printing pin of a dot-matrix or an armature of a relay drives a mechanical amplification mechanism having a base plate with a reference wall that is to be fixed to a frame. An elongated piezoelectric transducer element extends in the direction of its expansion between the base plate and a lever arm. A lever arm has a first end portion coupled to an end of the piezoelectric transducer element, which is remote from the base plate. The lever arm is fixed to the second portion of the base plate by a fulcrum member located at a position near the first end. A band spring has one end coupled between the second end portion of the lever arm and the base plate. An actuating element is fixed to substantially a central portion of the spring. The actuating element may be either a printing pin of a dot-matrix or the moving contact of a relay.

摘要翻译： 用于点阵的印刷销或继电器的电枢的压电换能器驱动机械放大机构，该机械放大机构具有带有要固定在框架上的参考壁的基板。 细长的压电换能器元件沿其在底板和杠杆臂之间的膨胀方向延伸。 杠杆臂具有联接到压电换能器元件的远离基板的端部的第一端部分。 杆臂通过位于靠近第一端的位置处的支点构件固定到基板的第二部分。 带弹簧的一端连接在杠杆臂的第二端部和底板之间。 致动元件固定到弹簧的基本上中心部分。 致动元件可以是点阵的打印销或继电器的移动触点。

公开(公告)号：US5115161A

公开(公告)日：1992-05-19

申请号：US620776

申请日：1990-12-03

申请人： Osamu Myohga ,  Tadao Uchikawa

发明人： Osamu Myohga ,  Tadao Uchikawa

IPC分类号： H01L41/09 ,  H02N2/16

CPC分类号： H02N2/0045 ,  H02N2/106

摘要： An ultrasonic motor comprises a stator which generates a combined ultrasonic elliptic vibration which is a combined vibration of longitudinal and torsional vibrations, and a rotor which is in press-contact with the stator and driven by the ultrasonic elliptic vibration via a friction force between the rotor and the stator. The stator comprises a first piezoelectric element for generating the longitudinal vibration, a second piezoelectric element for generating the reacting vibration, a headmass having a large stiffness against said longitudinal vibration and a large inertial mass against the torsional vibration, and a rearmass. In the ultrasonic motor, the resonance frequencies of the longitudinal and torsional vibrations are equal, so that the ultrasonic elliptic vibration is generated efficiently on the rotor in a high power state which is adapted in practical use.

摘要翻译： 超声波马达包括：定子，其产生组合的超声波椭圆振动，其是纵向和扭转振动的组合振动;以及与定子压接并由超声波椭圆振动驱动的转子，通过转子之间的摩擦力 和定子。 定子包括用于产生纵向振动的第一压电元件，用于产生反作用振动的第二压电元件，抵抗所述纵向振动具有大刚度的头盔和抗扭转振动的大惯性质量，以及重新制动。 在超声波马达中，纵向和扭转振动的共振频率相等，从而在适用于实际使用的高功率状态下，在转子上有效地产生超声波椭圆振动。

公开(公告)号：US5051647A

公开(公告)日：1991-09-24

申请号：US548574

申请日：1990-07-05

申请人： Tadao Uchikawa ,  Osamu Ohnishi ,  Osamu Myohga ,  Takeshi Inoue

发明人： Tadao Uchikawa ,  Osamu Ohnishi ,  Osamu Myohga ,  Takeshi Inoue

IPC分类号： H01L41/09 ,  H02N2/16

CPC分类号： H02N2/0045 ,  H02N2/106

摘要： In an ultrasonic motor which uses, as a stator, a longitudinal-torsional composite vibrator in which longitudinal and torsional piezoelectric elements are sandwiched between two blocks, and urges a rotor against the stator, a member is arranged on a piezoelectric element side of the block located near the rotor, so that an inertial mass of the member becomes larger with respect to torsional vibration than that of a rotor side.

摘要翻译： 在使用纵向和扭转压电元件夹在两个块之间的纵向 - 扭转复合振动器作为定子的超声波马达中，并且将转子推向定子，构件被布置在块的压电元件侧 位于转子附近，使得构件的惯性质量相对于转子侧的扭转振动变得更大。

公开(公告)号：US4965482A

公开(公告)日：1990-10-23

申请号：US365897

申请日：1989-06-14

申请人： Osamu Ohnishi ,  Sadayuki Takahashi ,  Osamu Myohga ,  Tadao Uchikawa ,  Takeshi Inoue ,  Isao Kagaya ,  Sadayuki Ueha

发明人： Osamu Ohnishi ,  Sadayuki Takahashi ,  Osamu Myohga ,  Tadao Uchikawa ,  Takeshi Inoue ,  Isao Kagaya ,  Sadayuki Ueha

IPC分类号： H01L41/09 ,  H02N2/12

CPC分类号： H02N2/106

摘要： An ultrasonic motor has a longitudinal-torsional composite transducer, a stator constituted by an ultrasonic vibrator sandwiching the transducer, and a rotor urged against the stator. The stator excites longitudinal-torsional ultrasonic vibrations to rotate the rotor by a frictional force. The motor includes a vibration adjusting rod for matching resonance frequencies of longitudinal and torsional ultrasonic vibrations of the stator with each other.

摘要翻译： 超声波马达具有纵向扭转复合传感器，由夹持换能器的超声波振子构成的定子以及抵靠定子的转子。 定子激发纵向扭转超声波振动，通过摩擦力使转子旋转。 电动机包括用于使定子的纵向和扭转超声波振动的谐振频率相互匹配的振动调节杆。