US 11,987,980 B2
Anchor bolt assembly and ceiling finishing panel fixing apparatus comprising same
Ju Byeong Cha, Seoul (KR)
Appl. No. 17/291,439
Filed by Ju Byeong Cha, Seoul (KR)
PCT Filed Apr. 29, 2020, PCT No. PCT/KR2020/005687
§ 371(c)(1), (2) Date May 5, 2021,
PCT Pub. No. WO2020/222535, PCT Pub. Date Nov. 5, 2020.
Claims priority of application No. 10-2019-0050787 (KR), filed on Apr. 30, 2019.
Prior Publication US 2022/0002995 A1, Jan. 6, 2022
Int. Cl. E04B 9/00 (2006.01); E04B 9/04 (2006.01); E04B 9/06 (2006.01); E04B 9/20 (2006.01); E04B 9/24 (2006.01); F16B 5/02 (2006.01); E04B 9/30 (2006.01)
CPC E04B 9/20 (2013.01) [E04B 9/0478 (2013.01); E04B 9/065 (2013.01); E04B 9/245 (2013.01); F16B 5/02 (2013.01); E04B 9/30 (2013.01)] 3 Claims
OG exemplary drawing
 
1. An anchor bolt assembly comprising:
an anchor body provided with a plurality of pointed protrusions on an upper surface thereof, and provided with a double stepped jaw having a side of a <> shape, as an outer diameter thereof widens downward from an upper end of the anchor body and then narrows downward again;
an anchor shell provided with open upper and lower sides thereof, extrapolated to a lower side of the anchor body, provided with a first incised part having a Y shape at an equal interval along a circumference of the anchor shell, and provided with a second incised part having a v shape at an equal interval along a longitudinal direction of the first incised part; and
a tightening member screwed to the anchor body through a screw thread provided on an inner circumferential surface of the tightening member, tightening and allowing the double stepped jaws of the anchor body to be inserted into the anchor shell so as to expand an expansion piece, and provided with a processing part for increasing frictional force along a circumference of an upper end of the tightening member,
wherein the anchor shell is configured to be raised toward a deepest part of an installation hole by the tightening member, due to a structure of the <> shape of the double stepped jaw of the anchor body and a structure of a   shape of the deepest part of the installation hole, and, due to the raised anchor shell, the first incised part of the anchor shell is configured to be opened to left and right in a form of <> so that an upper part of the anchor shell is bent and gathered toward a triangular pyramid protrusion of the anchor body, and
at this time, the second incised part of the anchor shell positioned on a wall side of the installation hole has a barb shape, and the second incised part is drilled into a wall of the installation hole, thereby strongly fixing the anchor shell to the wall.