HOIST DRIVE MECHANISM AND HOISTING APPARATUS EMPLOYING SAME

WIPO Patent Application WO/2014/199482

A1

The purpose of the present invention is to provide a hoist drive mechanism whereby the maximum thrust required of a direct acting type actuator can be kept to a relatively low level. In this hoist drive mechanism (2), thrust produced during extension of a direct acting stem (B) of a direct acting type actuator (A) is converted to torque that swings a swing shaft (C), this torque being used to elevate a hoist (1B) with respect to a base (1A) of a hoisting apparatus (1). One end (3A) of a tension-reliant elongated power transmission (3) having flexibility is linked to the distal end of the direct acting stem (B), and the other end (3B) of the tension-reliant power transmission (3) is affixed to the swing shaft (C), and attached to a power transmission swing body (4) having formed thereon an arcuate surface to which the tension-reliant power transmission (3) conforms. When the direct acting stem (B) is in a retracted state, the tension-reliant power transmission (3) flexes and conforms to the arcuate surface, and when the direct acting type actuator is driven, extending the direct acting stem (B), the tension-reliant power transmission (3) is withdrawn from the power transmission swing body (4) in such a way as to separate from the arcuate surface in small increments.

SHIMAMOTO TOSHIYUKI (JP)
CHIKAMOTO KENSAKU (JP)
TAKEDA KANJI (JP)

PCT/JP2013/066328

December 18, 2014

June 13, 2013

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SEAHONENCE INC (JP)

A61G7/00; A47C19/04

JP4363259B2	2009-11-11
JP5057387B2	2012-10-24
JP2974139B1	1999-11-08
JP2002338196A	2002-11-27

YANAGINO Takao et al. (JP)
Takao Yanagino (JP)

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