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1. WO2022002592 - SELF-DRILLING EXPANDING ANCHOR BOLT

Publication Number WO/2022/002592
Publication Date 06.01.2022
International Application No. PCT/EP2021/066245
International Filing Date 16.06.2021
IPC
F16B 13/00 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
13Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
F16B 13/06 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
13Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
04with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
06combined with expanding sleeve
CPC
B28D 1/146
BPERFORMING OPERATIONS; TRANSPORTING
28WORKING CEMENT, CLAY, OR STONE
DWORKING STONE OR STONE-LIKE MATERIALS
1Working stone or stone-like materials, e.g. brick, concrete ; or glass; , not provided for elsewhere; Machines, devices, tools therefor
14by boring or drilling
146Tools therefor
F16B 13/002
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS, WEDGES, JOINTS OR JOINTING
13Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
002self-cutting
F16B 13/065
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS, WEDGES, JOINTS OR JOINTING
13Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
04with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
06combined with expanding sleeve
063by the use of an expander
065fastened by extracting the screw, nail or the like
F16B 13/066
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
BDEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS, WEDGES, JOINTS OR JOINTING
13Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
04with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
06combined with expanding sleeve
063by the use of an expander
066fastened by extracting a separate expander-part, actuated by the screw, nail or the like
Applicants
  • HILTI AKTIENGESELLSCHAFT [LI]/[LI]
Inventors
  • KOH, Gaisheng
  • LU, Liang
  • XU, Linda
Agents
  • HILTI AKTIENGESELLSCHAFT
Priority Data
202010614658.730.06.2020CN
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) SELF-DRILLING EXPANDING ANCHOR BOLT
(FR) BOULON D'ANCRAGE À EXPANSION AUTOTARAUDEUR
Abstract
(EN) The present invention provides a self-drilling expanding anchor bolt, comprising a drill bit for drilling, an anchor rod connected to the drill bit, and an expanding sleeve surrounding the anchor rod, the anchor rod having an expansion cone at a first end adjoining the drill bit, having a neck region behind and contiguous with the expansion cone, and having a threaded segment at a second end of the neck region remote from the drill bit, wherein the expansion cone expands the expanding sleeve in a radial direction when the expansion cone is pulled into the expanding sleeve; a transition part is provided between the drill bit and the expansion cone of the anchor rod, the maximum diameter of the transition part being smaller than the hole diameter of a drilled hole formed by the drill bit. In the process of anchoring, the expanding sleeve forms a good friction fit with a hole wall and the transition part, greatly improving the anchoring result afforded by the self- drilling anchor bolt.
(FR) La présente invention concerne un boulon d'ancrage à expansion autotaraudeur, comprenant un trépan pour le forage, une tige d'ancrage reliée au trépan et un manchon d'expansion entourant la tige d'ancrage, la tige d'ancrage ayant un cône d'expansion au niveau d'une première extrémité adjacente au trépan, ayant une région de col derrière le cône d'expansion et contiguë à celui-ci et ayant un segment fileté au niveau d'une seconde extrémité de la région de col à distance du trépan, le cône d'expansion dilatant le manchon d'expansion dans une direction radiale lorsque le cône d'expansion est tiré dans le manchon d'expansion ; une partie de transition est disposée entre le trépan et le cône d'expansion de la tige d'ancrage, le diamètre maximal de la partie de transition étant inférieur au diamètre de trou d'un trou foré formé par le trépan. Dans le procédé d'ancrage, le manchon d'expansion forme un bon ajustement par frottement avec une paroi de trou et la partie de transition, améliorant considérablement le résultat d'ancrage procuré par le boulon d'ancrage autotaraudeur.
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