Abstract: A string stopper includes a fixing hole formed at an end, and a guide hole formed at one side of the fixing hole. A string is inserted into the fixing hole so that a fixed end of the string is fixed to the fixing hole, and a free end of the string is inserted into an entrance of the guide hole and is drawn out of an exit of the guide hole. The guide hole has a first narrow groove and a second narrow groove which are respectively formed at the inside of the entrance and at the outside of the exit of the guide hole.

Abstract: Disclosed herein is a buckle including a plug member and a socket member. The plug member includes a shaft part protruding from one side of a first body, a first magnet inserted into the shaft part, a connection recess formed on the outer face of the shaft part, and at least one guide protrusion formed on the inner wall of the connection recess. The socket member includes a connection protrusion formed on one side of a second body to be inserted into the connection recess, a coupling recess formed in the middle of the connection protrusion so that the shaft part is inserted into the coupling recess, a second magnet inserted into the coupling recess, and at least one guide groove formed in the outer surface of the connection protrusion to guide the guide protrusion.

Abstract: A string stopper includes a fixing hole formed at an end, and a guide hole formed at one side of the fixing hole. A string is inserted into the fixing hole so that a fixed end of the string is fixed to the fixing hole, and a free end of the string is inserted into an entrance of the guide hole and is drawn out of an exit of the guide hole. The guide hole has a first narrow groove and a second narrow groove which are respectively formed at the inside of the entrance and at the outside of the exit of the guide hole.

Abstract: Disclosed is a clip for attachment accessories of a backpack. The clip includes: a blade formed in a long plate shape; a clip part formed by an end portion of the blade which is bent; a movable clip having a pair of arms which extend from both sides of a base part thereof and are combined with both sides of the clip part to be movable in a longitudinal direction of the clip part; and a locking means for maintaining a state where the movable clip is moved toward the surface of the blade.

Abstract: A buckle including: a male buckle member; a female buckle member; locking and unlocking means locked and unlocked by a relative sliding action of the male buckle member and the female buckle member; and a releasing means for unlocking the locking and unlocking means by sliding the male buckle member and the female buckle member in a release direction.

Abstract: Disclosed is a clip for attachment accessories of a backpack. The clip includes: a blade formed in a long plate shape; a clip part formed by an end portion of the blade which is bent; a movable clip having a pair of arms which extend from both sides of a base part thereof and are combined with both sides of the clip part to be movable in a longitudinal direction of the clip part; and a locking means for maintaining a state where the movable clip is moved toward the surface of the blade.