| 摘要 |
PROBLEM TO BE SOLVED: To provide a fitting structure of a lens barrel and a lens barrel accessory, a lens barrel and a lens barrel accessory that have a protrusion generating detachment torque hardly worn out even if the detachment torque is made larger.SOLUTION: A fitting structure of a lens barrel and a lens barrel accessory according to the present invention comprises: an engagement pawl 18 that extends in a circumferential direction on a connection part inner circumferential surface 16 of a lens food 10; an engagement groove 38 that extends in a circumferential direction on a connection edge outer circumferential surface 36 of a lens barrel 30; a barrel side protrusion part 45 that extends in an optical axis C direction on the outer circumferential surface 36; and an accessory side protrusion part 21 that extends in the optical axis C direction on the inner circumferential surface 16 and causes detachment torque to be generated by overriding the barrel side protrusion 45 upon fitting the lens food 10. A side surface 41 of the engagement groove 38 consists of a groove formation rib 40 provided on the outer circumferential surface 36, and the barrel side protrusion part 45 has a length crossing at least the engagement groove 38 and the groove formation rib 40, and the accessory side protrusion part 21 has a length corresponding to the barrel side protrusion 45. |
