Drive unit and image pickup unit equipped with the drive unit

Details Drive unit and image pickup unit equipped with the drive unit Drive unit and image pickup unit equipped with the drive unit

2007-09-25

2007-09-25

Schuberg, Darren (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Linear

C310S013000, C310S015000, C310S080000, C310S014000, C310S027000, C359S811000, C359S820000

Reexamination Certificate

active

11230739

ABSTRACT:
A drive unit for performing precise linear movement of a driven object comprises a motor having a cylindrical stator and a cylindrical rotor that is coaxially put in the cylindrical stator and capable of rotating relatively to the cylindrical stator, a movable barrel for holding a driven object mounted for rotation in the cylindrical rotor, a motion transformation mechanism comprising an internal helical groove formed in the cylindrical rotor and an external helical thread formed on the movable barrel which engage with each other so as to cause relative rotation between the cylindrical rotor and the movable barrel when the cylindrical rotor rotates, thereby transforming rotational movement of the rotor into a linear movement of the movable barrel, and a head-on striking structure provided between the helical groove and the helical thread to restrict the relative rotation at an intended extreme end of an axial path of the movable barrel.

REFERENCES:
patent: 3824420 (1974-07-01), Stegeman et al.
patent: 4145625 (1979-03-01), Seilly
patent: 4596449 (1986-06-01), Iwata et al.
patent: 4605286 (1986-08-01), Sumi
patent: 4633357 (1986-12-01), Kinjo
patent: 4712027 (1987-12-01), Karidis
patent: 4767958 (1988-08-01), Sasaki
patent: 5099161 (1992-03-01), Wolfbauer, III
patent: 5990587 (1999-11-01), Shimanovich et al.
patent: 6800970 (2004-10-01), Aoshima
patent: 56-147132 (1981-11-01), None
patent: 62-195615 (1987-08-01), None

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