Patent ID: 8019214

Claim:
A camera accessory coupling apparatus for coupling a camera body to a camera accessory, the camera accessory coupling apparatus comprising: a holder that is detachable from the camera body; a locking pin disposed in the holder that can enter and exit the holder; an elastic member contacting the locking pin and applying an elastic force to the locking pin; and a locking lever coupled with the holder that is contactable with the elastic member to control the entering and exiting of the locking pin with respect to the holder, wherein: when the locking lever rotates in a first direction along an outer circumference of the holder and presses down the elastic member, a first portion of the locking pin exits from the holder; and when the locking lever rotates in a second direction, opposite to the first direction, along the outer circumference of the holder, the locking lever is separated from the elastic member and the first portion of the locking pin enters the holder.