CHUCK AND DENTAL HANDPIECE

• Main Authors: QUAN, Jingjing, FAN, Zhiyong, JIANG, Junqiang
• Format: Patent
• Language: Chinese; English; French
• Published: 05.05.2022
• Subjects: APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE; DENTISTRY; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE

A chuck, comprising: a cylindrical shell (10), a gear bearing (20) internally sleeved with the cylindrical shell (10) and rotatably connected to the cylindrical shell (10), and an elastic locking cap (30) internally sleeved with the gear bearing (20) and rotatably connected to the gear bearing (20), the end of the elastic locking cap (30) facing the outside of the cylindrical shell (10) being clamped to the gear bearing (20), and the inner side wall of the gear bearing (20) being provided with a limiting ring groove (23) recessed into the inner side wall of the gear bearing (20); when positioned on the inner side wall of the gear bearing (20), the elastic locking cap (30) is in a retracted state and, when positioned in the limiting ring groove (23), the elastic locking cap (30) is in an opened state. Direct fixation of the chuck to a root canal file can be implemented, implementing direct transmission, improving the concentricity of the root canal file and a dental handpiece, and increasing transmission effic