Rotation/linear motion converting mechanism

Details Rotation/linear motion converting mechanism Rotation/linear motion converting mechanism

1997-12-01

1999-11-30

Graysay, Tamara L.

Machine element or mechanism

Gearing

Directly cooperating gears

74459, F16H 2522

Patent

active

059922583

ABSTRACT:
A mechanism for converting rotational motion to linear motion having a roller thread mechanism interposed between a shaft having multiple male threads and a nut having multiple female threads. The female threads of the nut are opposite in direction to the male threads of the shaft. The rollers have different effective thread diameters which are provided by the shape of the threads on the shaft, rollers and nut. The mechanism is configured so that the axial travel distance of the shaft, per relative rotation of the nut and the shaft, can be shortened. The mechanism is also capable of a fast movement, which is realized by suppressing the rotation of the rollers. When the mechanism is used as an actuator of a brake device, an antilock control, a traction control, and the like, it can be easily implemented by controlling the rotation of the rotor.

REFERENCES:
patent: 2683379 (1954-07-01), Strandgren
patent: 3214991 (1965-11-01), Perrin
patent: 3585869 (1971-06-01), Lemor
patent: 3730016 (1973-05-01), Miller
patent: 4375770 (1983-03-01), Druet
patent: 4526053 (1985-07-01), Carson
patent: 4615229 (1986-10-01), Granbom
patent: 4648285 (1987-03-01), Carson

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