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    • 12. 发明授权
    • Artificial cardiac pump
    • 人造心脏泵
    • US07502648B2
    • 2009-03-10
    • US10552418
    • 2004-04-23
    • Takeshi OkuboToshiyuki OsadaYasuharu YamamotoTakeshi SanoYusuke MiyamotoKazuyoshi Miyagawa
    • Takeshi OkuboToshiyuki OsadaYasuharu YamamotoTakeshi SanoYusuke MiyamotoKazuyoshi Miyagawa
    • A61M1/10
    • A61M1/1031A61M1/101A61M1/1012A61M1/1015A61M1/1017A61M1/122
    • An artificial cardiac pump includes an impeller (3) rotatably supported on a fixed shaft body (2) in a housing (1) and a drive mechanism rotating the impeller, wherein blood is taken in from the front side and force-fed to the rear side by the rotation of the impeller (3). The shaft body (2) is connected between a front side fixed body (5) fixed to a straightening plate (4) joined to the housing (1) at the front of the impeller (3) and a rear side fixed body (7) fixed to a diffuser (6) joined to the housing (1) at the rear of the impeller (3). The impeller (3) further includes a sleeve (8) having an inner peripheral surface opposed to the outer peripheral surface of the shaft body (2) through a minute clearance and front and rear end faces opposed to the rear end face of the front side fixed body (5) and the front end face of the rear side fixed body (7) through minute clearances, and an impeller (9) joined to the outer peripheral surface of the sleeve (8). The drive mechanism further includes a polar anisotropical permanent magnet (10) enclosed in the sleeve (8) and a rotating field generator (11) enclosed in the housing (1).
    • 一种人造心脏泵包括可旋转地支撑在壳体(1)中的固定轴体(2)上的叶轮(3)和旋转叶轮的驱动机构,其中从前侧吸入血液并强制供给到后部 通过叶轮(3)的旋转。 轴体(2)连接在固定在与叶轮(3)前方接合的壳体(1)的矫直板(4)的前侧固定体(5)和后侧固定体(7)之间, 固定到在叶轮(3)的后部连接到壳体(1)的扩散器(6)。 叶轮(3)还包括具有通过微小间隙与轴体(2)的外周面相对的内周面的套筒(8),与前侧的后端面相对的前后端面 固定体(5)和后侧固定体(7)的前端面通过微小的间隙,以及与套筒(8)的外周面接合的叶轮(9)。 驱动机构还包括封闭在套筒(8)中的极性各向异性永久磁铁(10)和封闭在壳体(1)中的旋转磁场发生器(11)。
    • 13. 发明申请
    • Ball screw mechanism, machining method for joint between nut and ball circulation piece, and electric power steering device
    • 滚珠丝杠机构,螺母和球循环片之间接头的加工方法,以及电动助力转向装置
    • US20050076733A1
    • 2005-04-14
    • US10954174
    • 2004-10-01
    • Yasuharu YamamotoSentarou Sugita
    • Yasuharu YamamotoSentarou Sugita
    • B23C3/32B62D5/04F16H25/22F16H25/24F16H3/06
    • F16H25/2223B62D5/0448F16H2025/2242Y10T74/19721Y10T74/19772
    • In a ball screw mechanism, in order to eliminate a step on a joint between respective one ends of a female screw groove of a nut and a circulation groove of a ball circulation piece, a ball end mill of the diameter equal to or larger than balls is moved along the female screw groove to machine a joint area between the respective one ends of the female screw groove and the circulation groove. During the movement of the ball end mill, the infeed depth of the ball end mill into the machined surface is gradually increased so that an acute angle is formed as the angle formed by the boundary lines between a finished surface and an unfinished surface at both flanks of the female screw groove. Thus, the contact points of each ball on the female screw groove can be prevented from being changed abruptly at the boundary lines between the finished surface and the unfinished surface of the female screw groove, whereby it can be realized to prevent noise and vibration from being generated during the operation of the ball screw mechanism.
    • 在滚珠丝杠机构中,为了消除螺母的母螺纹槽的各端部与球循环片的循环槽的接合部的台阶,直径等于或大于球的球头铣刀 沿着内螺纹槽移动以加工内螺纹槽的各个一端和循环槽之间的接合区域。 在球头立铣刀运动期间,球头铣刀进入加工表面的进刀深度逐渐增加,使得锐角形成为由两侧面的精加工表面与未完成表面之间的边界线形成的角度 的内螺纹槽。 因此,可以防止阴螺纹槽上的每个球的接触点在母螺纹槽的精加工表面与未完成表面之间的边界线处突然变化,从而可以实现防止噪声和振动 在滚珠丝杆机构的运转过程中产生。