To suppress noise, abrasion and damage of a gear, etc., and to prevent resonance by providing a driveshaft to be rotationally driven by a driving motor through a reduction gear and an output shaft to drive a piston through a conrod and connecting these driveshaft and output shaft to each other through an elastic body.
An output shaft 12 on which a flywheel 13 is fixed is rotated through a pinion gear 3, a gear 5, etc., constituting a reduction gear with a small driving motor 1 as a power source, and the piston 15 is reciprocally driven through a conrod 13 by its rotation. In such a compressor, a driveshaft 6 on which the gear 5 is fixed and the output shaft 12 are connected to each other by a coil spring 9 as an elastic body. Both end parts 9a of this coil spring 9 are secured on spring holders 8, 10 in a state in parallel with the axial direction, and in the case when speed reduction of the output shaft 12, for example. becomes small by load fluctuation, they are provided to absorb speed fluctuation as the spring holder 10 side of the coil spring 9 is twisted in the counterrotational direction.
OGURA MITSUO
ISHIKAWA MITSUSACHI
KUBOTA TOSHIFUMI
SUNAOSHI MITSUHIRO
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