One-way fastener
AssigneeDaewoo Bolt Co., Ltd.
InventorsHee Joon Kang, Ye Ri Kang
Life of this patent
Estimating the term…
Abstract
Proposed is a one-way fastener configured to be inserted and coupled from an outside that is open toward a through-hole provided in a fixture to a closed inside, the one-way fastener includes a deformable sleeve and a pressurizing sleeve fitted to the fastener body, a pressurizing ring configured to be fitted over the fastener body that is exposed through the pressurizing sleeve, and a pressurizing member coupled by a screw-type engagement to the fastener body that is exposed through the pressurizing ring. Whereby, when any one surface among the respective side surfaces of the fixture is located in a closed space and thus a bolt and nut cannot be fastened, the one-way fastener can easily be fixed from the open surface of the fixture toward the closed space surface.
Claims1
An one-way fastener configured to be inserted and coupled from an outside that is open toward a through-hole (H) provided in a fixture (F) to a closed inside, the one-way fastener comprises:
- a deformable sleeve (20) and a pressurizing sleeve (30) configured to be fitted to a fastener body (10);
- a pressurizing ring (40) configured to be fitted over the fastener body (10) that is exposed through the pressurizing sleeve (30);
- and
- a pressurizing member (50) coupled by a screw-type engagement to the fastener body (10) that is exposed through the pressurizing ring (40),
- wherein the fastener body (10) comprises:
- a pressurizing head (120) provided at a rear portion of a fastener shaft (110);
- and
- an external screw thread (130) having a predetermined length and being provided in front of the fastener shaft (110),
- wherein a pressurizing head ring (121) configured in a “” shape toward an outer periphery of the pressurizing head (120) is provided on an outer periphery of the fastener shaft (110) of the pressurizing head (120) of the fastener body (10);
- a slit-shaped outer deformable guide groove (211) is provided at a location spaced inwardly apart from each of opposite ends of an outer periphery of a cylindrical deformable sleeve body (210) at the deformable sleeve (20) by a predetermined distance;
- and
- an inner deformable guide groove (212) configured in an inequilateral “” shape is provided at an inner periphery of the deformable sleeve body (210),
- wherein a thickness of the deformable sleeve (20) of the inner deformable guide groove (212) is gradually formed to be thinner up to a central bending line of the inner deformable guide groove (212), and on one side of the inner deformable guide groove (212), a one side bending guide line (213) is formed on an inner peripheral surface at a position of the outer deformation guide groove (211) formed at one side, while on an opposite side of the inner deformable guide groove (212), the opposite side bending guide line (213) is formed on the inner peripheral surface at a position spaced outward from the opposite outer deformable guide groove (211) by a predetermined distance.
Dependencies are inferred from the claim text.