Coupling head not prone to unhooking and drilling tool

• Main Authors: XIAN JIANBIN, LIU XUYANG, LIANG ZHIKE
• Format: Patent
• Language: Chinese; English
• Published: 23.08.2024
• Subjects: BLASTING; DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; THERMAL INSULATION IN GENERAL; WEAPONS

The utility model discloses a coupling head not prone to unhooking and a drilling tool, and belongs to the technical field of tapping tools. A stroke sleeve of the coupling head not prone to unhooking is movably arranged in an outer sleeve, and a threaded cavity is formed in the stroke sleeve. The stroke rod is rotatably arranged in the outer sleeve, a threaded section is arranged on the stroke rod and can be in threaded connection with the threaded wall of the threaded cavity, a first abutting section with the inner diameter decreasing progressively is arranged on the side, away from the threaded section, of the threaded cavity, and a second abutting section with the outer diameter decreasing progressively is arranged at the end, close to the threaded cavity, of the threaded section. The outer wall of the first abutting section can abut against the inner wall of the second abutting section. A first limiting block is arranged on the inner wall of the outer sleeve, a second limiting block is arranged on the ou