US 12,331,810 B2
Safety shackle
Yong Tae Im, Gapyeong-gun (KR); and Young Sung Lee, Goseong-gun (KR)
Assigned to EASY LOCK CO., LTD., Ansan-si (KR); and Yong Tae IM, Gapyeong-gun (KR)
Appl. No. 18/020,470
Filed by EASY LOCK CO., LTD., Ansan-si (KR); and Yong Tae Im, Gapyeong-gun (KR)
PCT Filed Nov. 14, 2022, PCT No. PCT/KR2022/017814
§ 371(c)(1), (2) Date Feb. 9, 2023,
PCT Pub. No. WO2024/010147, PCT Pub. Date Jan. 11, 2024.
Claims priority of application No. 10-2022-0083143 (KR), filed on Jul. 6, 2022.
Prior Publication US 2024/0263685 A1, Aug. 8, 2024
Int. Cl. F16G 15/06 (2006.01); B66C 1/36 (2006.01)
CPC F16G 15/06 (2013.01) [B66C 1/36 (2013.01); F16B 2200/69 (2023.08)] 8 Claims
OG exemplary drawing
 
1. A safety shackle comprising:
a shackle body formed in a shape in which a central body portion is bent so that a first body end portion and a second body end portion face each other and are spaced apart from each other, wherein a first through hole is formed in the first body end portion, a second through hole is formed in the second body end portion to be concentric with the first through hole, and a first hook mounting hole perpendicularly passing through the first through hole is formed in the first body end portion;
a shackle pin in which a central pin portion blocks a space between the first body end portion and the second body end portion in a state in which a first pin end portion is inserted into the first through hole and a second pin end portion is inserted into the second through hole and a locking groove is formed along an outer circumference of the first pin end portion; and
a first hook mechanism including a pair of first safety hooks and a first safety hook spring, wherein first fixing latches of the first safety hooks are inserted into or separated from the locking groove of the first pin end portion positioned in the first through hole as first hook bodies of the first safety hooks are coupled to the first body end portion by first hinge shafts and rotated in a state in which the first safety hooks are symmetrical with each other and partially inserted into the first hook mounting hole, and the first safety hook spring is disposed between the first safety hooks and applies an elastic force to the first safety hooks in directions in which the first fixing latches are inserted into the locking groove; wherein:
each of the first hook bodies has an inner end portion which is adjacent to a bottom of the first hook mounting hole and is coupled to the first body end portion by the first hinge shaft and includes the first fixing latch at an outer end portion of an inner portion which faces the first through hole and is far from the first hinge shaft, a through groove concavely formed along an inner portion from the first fixing latch so that the first pin end portion passes through in a state in which the first fixing latch is withdrawn from the first through hole, and an operating piece protruding from an outer portion; and
the first safety hook spring is formed of a tension coil spring and mounted between outer end portions of the first hook bodies.