Title:
SAW USING BENDING MOTION OF CRANK ARM
Document Type and Number:
WIPO Patent Application WO/2021/256573
Kind Code:
A1
Abstract:
The present invention relates to a saw using a bending motion of a crank arm. The saw using a bending motion of a crank arm comprises, as main components, a sun gear (10), a main crank arm (20), a planetary gear (30), a multi-crank arm (40), and a linear rod unit (50), wherein the position of a multi-crank pin is freely compensated by a bending motion according to mutual reverse rotation of a crank arm link-coupled to revolve around a sun gear shaft and the multi-crank arm link-coupled to the crank arm to rotate so that a linear reciprocation force required for cutting transfer of the linear rod unit is accurately transferred, and particularly, the multi-crank arm is positioned consistent with a linear line every time the crank arm equally rotates by 180 degrees without being affected by the rotating angle of the sun gear shaft to extend a cutting stroke distance of the linear rod unit and also freely accelerate/decelerate and transfer the rotating force of the solar gear shaft so that cutting torque is simply adjusted.
Inventors:
RYU UK HYUN (KR)
Application Number:
PCT/KR2020/007719
Publication Date:
December 23, 2021
Filing Date:
June 15, 2020
Export Citation:
Assignee:
TECHONE CO LTD (KR)
International Classes:
A01G3/08; B27B19/00
Foreign References:
| KR20180033718A | 2018-04-04 | |||
| JPH07305601A | 1995-11-21 | |||
| CN201735896U | 2011-02-09 | |||
| CN204735784U | 2015-11-04 | |||
| KR102132119B1 | 2020-07-09 |
Attorney, Agent or Firm:
LEE, Chun Hee (KR)
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