| 摘要 |
A quick coupler according to the present invention, which is mounted on a construction machine to combine and separate an attachment for operation, comprises: a main body part of the coupler including first and second combining parts which are formed with a gap therebetween and have first and second combining pins of the attachment combined therewith separately; a locking member installed on the main body part of the coupler at the edge of the first combining part to be able to rotate, wherein a locking protrusion part is introduced from the first combining part at the point of the first combining pin of the attachment being inserted into the first combining part and is restored at the point of the insertion being completed to prevent the separation of the first combining pin from the first combining part; a stopper installed near to the locking member and preventing the rotation of the locking member by being in contact with the locking member to prevent the separation of the first combining pin from the first combining part with the locking protrusion part of the locking member protruding from the first combining part; an elastically supporting unit installed on the main body part of the coupler and providing an elastic force so that the locking member can be elastically biased in the direction of being in contact with the stopper; and an unlocking unit for releasing the locked state of the first combining pin by rotating the locking member supported on the stopper in the direction of being separated from the stopper so that the locking protrusion part of the locking member can be introduced from the inner circumference surface of the first combining part. |
