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    • 43. 发明专利
    • BALL SCREW'S SPLINE MECHANISM
    • JPH1019041A
    • 1998-01-20
    • JP17105196
    • 1996-07-01
    • TOYOTA MOTOR CORP
    • OIKE MASAHIROKURATA SUMIO
    • F16H25/22F16C31/06
    • PROBLEM TO BE SOLVED: To eliminate the simultaneous control of a motor for rotating the external cylinder of a spline shaft and a motor for rotating a ball screw nut when a shaft is rotated. SOLUTION: A ball screw spline mechanism 10 is provided with a shaft 4 in which a ball screw groove 4b and a ball spline groove 4s are formed, a ball screw nut 6 which is threadedly engaged with the ball screw groove 4b, and an external cylinder 8 for a spline shaft which is fitted to the ball spline groove 4s. In this case, rotation transmitting mechanisms 18w, 8w, 16w, 26w and 6w, which transmit rotation force from the external cylinder 8 of the spline shaft to the ball screw nut 6, are provided go that the rotation of the same amount of that of the external cylinder 8 is generated. For this reason, even if the shaft 4 is rotated by the external cylinder 8, since the ball screw nut 6 is rotated at a speed equal to the that of the shaft 4, the shaft 4 does not move in the stroke direction.
    • 44. 发明专利
    • DIRECT ACTING DEVICE
    • JPH09273552A
    • 1997-10-21
    • JP10477796
    • 1996-04-03
    • NIPPON SEIKO KK
    • ISO KENICHIKOIZUMI HIDEKIYAMAMOTO ATSUHIROYOKOUCHI ATSUSHINAKA MICHIHARU
    • F16H25/24C10M125/00C10N20/06C10N50/10F16C31/06
    • PROBLEM TO BE SOLVED: To suppress increase in abrasion on high speed rotation especially by filling grease composition including particles which consist of inorganic compound including base oil and thickening agent and whose average particle diameter is a specified value or less for a specified rate in the all rates of the grease composition. SOLUTION: In a normal condition, all of oil used as the base oil of lubricating oil are used without especially limiting the base oil of grease filled into a direct acting device. A thickening agent is also not restricted especially. The particle diameter of grease is set to the extent without any trouble as grease for the direct acting device, and there is necessity for entering the particles between thickening agent fibers, and good abrasion preventing effect is realized in the case where an average particle diameter is 2μm on less. The thickening agent is compounded by about 10 to 35wt.% in all rates of grease. Inorganic compound particles are compound by 0.1 to 10wt.% in all rates of grease. In the case where the concentration of the inorganic compound particles is lower than it, the appearance of the abrasion preventing effect is suppressed. On the other hand, in the case where the concentration is higher than it, the dispersion is deteriorated, and acoustic characteristic is also deteriorated.