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    • 7. 发明授权
    • Vibration actuator having magnetic circuit elastically supported by a spiral damper with increased compliance
    • 具有磁路的振动致动器,由具有增加的顺应性的螺旋阻尼器弹性地支撑
    • US06377145B1
    • 2002-04-23
    • US09673863
    • 2000-10-19
    • Toru Kumagai
    • Toru Kumagai
    • H01F708
    • H04R7/16H04R9/025H04R2400/07
    • A vibration actuator includes an electromechanical transducer having a magnetic circuit (1-4) and a driving coil (5), a support frame (9), and a damper (270) elastically supporting the magnetic circuit onto the support frame to flexibly damp the vibration of the magnetic circuit when a driving AC current is supplied to the coil (5). The damper (270) comprises inner and outer ring portions (271, 272) and a plurality of spiral spring portions (273) determined by a plurality of spiral slits (274, 275) formed in the damper. In order to reduce the spiral spring portion determined by the adjacent two spiral slits in its compliance, each of the spiral spring portions has an effective spring length determined by an effective angle (&thgr;) which is determined as an angle (by angular degree) from an inner end of the inner spiral slit to an outer end of the outer spiral slit defining each respective spiral spring portion around a center of the damper. The effective angle is 55 angular degree or more. In a preferable example, the effective spring length is determined by a product (r·&thgr;) of an average radius (r) value by the unit of “mm” and the effective angle (&thgr;) value by unit of the angular degree. The effective spring length is selected to 320 or more, and preferably 400 or more.
    • 振动致动器包括具有磁路(1-4)和驱动线圈(5),支撑框架(9)和阻尼器(270)的机电换能器,弹性地将磁路支撑到支撑框架上以柔性地阻尼 当向线圈(5)提供驱动AC电流时,磁路振动。 阻尼器(270)包括内圈和外圈部分(271,272)以及由形成在阻尼器中的多个螺旋狭缝(274,275)确定的多个螺旋弹簧部分(273)。 为了减少由相邻的两个螺旋狭缝确定的螺旋弹簧部分的顺应性,每个螺旋弹簧部分具有由有效角度(θ)确定的有效弹簧长度,该有效角度(θ)被确定为与 内螺旋狭缝的内端到外螺旋狭缝的外端,限定围绕阻尼器中心的每个螺旋弹簧部分。 有效角度为55度以上。 在优选的示例中,有效弹簧长度由平均半径(r)值乘以“mm”的乘积(r.ta)和有效角度(θ)值以角度为单位确定。 选择有效弹簧长度为320以上,优选为400以上。
    • 10. 发明授权
    • Oil injecting apparatus
    • 注油装置
    • US07191806B2
    • 2007-03-20
    • US10525465
    • 2004-03-11
    • Ryoji YoneyamaShinji KinoshitaToru KumagaiHiromitsu GotohAtsushi Ohta
    • Ryoji YoneyamaShinji KinoshitaToru KumagaiHiromitsu GotohAtsushi Ohta
    • B65B31/04
    • F16N37/003
    • The opening of an oil container 11 for storing oil 12 is sealed airtight with a cover member 32. A one-sided-bag-shaped fluid dynamic pressure bearing 10 is seated on an O-ring 25 and fixed airtight onto the upper surface of a bearing seating 30. Inanexhaust position with the distal end portion of an injection tube 36 positioned away from an oil level, the inside of the oil container 11 is evacuated by a vacuum pump 22 through a suction/exhaust passage including a suction/exhaust through-hole 17, thus turning the inside of the one-sided-bag-shaped fluid dynamic pressure bearing (10) into a vacuum. In this state, a control device drives a moving device to raise the oil container 11 to an injection position and releases the suction/exhaust passage to the atmosphere. This causes the oil 12 to be injected into the one-sided-bag-shaped fluid dynamic pressure bearing 10 through an oil injection passage including the injection tube 36.
    • 用于储存油12的油容器11的开口用盖构件32密封地密封。 单面袋状流体​​动压轴承10位于O形环25上,并且气密地固定在轴承座30的上表面上。 在喷射管36远离油位的远端部分的排气位置,油容器11的内部通过包括吸入/排气通孔17的抽吸/排气通道由真空泵22抽真空,因此 将单面袋状流体​​动压轴承(10)的内部转动成真空。 在这种状态下,控制装置驱动移动装置将油容器11升高到喷射位置,并将吸入/排出通道释放到大气中。 这使得油12通过包括注射管36的注油通道注入到单面袋形流体动压轴承10中。